diff options
Diffstat (limited to 'tests/manual/examples/opengl')
42 files changed, 3761 insertions, 0 deletions
diff --git a/tests/manual/examples/opengl/computegles31/CMakeLists.txt b/tests/manual/examples/opengl/computegles31/CMakeLists.txt new file mode 100644 index 0000000000..32426152aa --- /dev/null +++ b/tests/manual/examples/opengl/computegles31/CMakeLists.txt @@ -0,0 +1,49 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +cmake_minimum_required(VERSION 3.16) +project(computegles31 LANGUAGES CXX) + +if(NOT DEFINED INSTALL_EXAMPLESDIR) + set(INSTALL_EXAMPLESDIR "examples") +endif() + +set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/opengl/computegles31") + +find_package(Qt6 REQUIRED COMPONENTS Core Gui OpenGL) + +qt_standard_project_setup() + +qt_add_executable(computegles31 + glwindow.cpp glwindow.h + main.cpp +) + +set_target_properties(computegles31 PROPERTIES + WIN32_EXECUTABLE TRUE + MACOSX_BUNDLE TRUE +) + +target_link_libraries(computegles31 PRIVATE + Qt6::Core + Qt6::Gui + Qt6::OpenGL +) + +# Resources: +set(computegles31_resource_files + "Qt-logo-medium.png" +) + +qt_add_resources(computegles31 "computegles31" + PREFIX + "/" + FILES + ${computegles31_resource_files} +) + +install(TARGETS computegles31 + RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}" + BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}" + LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}" +) diff --git a/tests/manual/examples/opengl/computegles31/Qt-logo-medium.png b/tests/manual/examples/opengl/computegles31/Qt-logo-medium.png Binary files differnew file mode 100644 index 0000000000..a1ca1f1830 --- /dev/null +++ b/tests/manual/examples/opengl/computegles31/Qt-logo-medium.png diff --git a/tests/manual/examples/opengl/computegles31/computegles31.pro b/tests/manual/examples/opengl/computegles31/computegles31.pro new file mode 100644 index 0000000000..8d9b00ba83 --- /dev/null +++ b/tests/manual/examples/opengl/computegles31/computegles31.pro @@ -0,0 +1,11 @@ +QT += opengl + +HEADERS = $$PWD/glwindow.h + +SOURCES = $$PWD/glwindow.cpp \ + $$PWD/main.cpp + +RESOURCES += computegles31.qrc + +target.path = $$[QT_INSTALL_EXAMPLES]/opengl/computegles31 +INSTALLS += target diff --git a/tests/manual/examples/opengl/computegles31/computegles31.qrc b/tests/manual/examples/opengl/computegles31/computegles31.qrc new file mode 100644 index 0000000000..b99eb0a82e --- /dev/null +++ b/tests/manual/examples/opengl/computegles31/computegles31.qrc @@ -0,0 +1,5 @@ +<RCC> + <qresource prefix="/"> + <file>Qt-logo-medium.png</file> + </qresource> +</RCC> diff --git a/tests/manual/examples/opengl/computegles31/glwindow.cpp b/tests/manual/examples/opengl/computegles31/glwindow.cpp new file mode 100644 index 0000000000..98533e714e --- /dev/null +++ b/tests/manual/examples/opengl/computegles31/glwindow.cpp @@ -0,0 +1,372 @@ +// Copyright (C) 2017 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include "glwindow.h" +#include <QImage> +#include <QOpenGLShaderProgram> +#include <QOpenGLContext> +#include <QOpenGLFunctions> +#include <QOpenGLExtraFunctions> +#include <QOpenGLVertexArrayObject> +#include <QtGui/qopengl.h> +#include <QDebug> +#include <QTimer> +#include <math.h> + +#ifndef GL_READ_WRITE +#define GL_READ_WRITE 0x88BA +#endif + +#ifndef GL_RGBA8 +#define GL_RGBA8 0x8058 +#endif + +#ifndef GL_SHADER_IMAGE_ACCESS_BARRIER_BIT +#define GL_SHADER_IMAGE_ACCESS_BARRIER_BIT 0x00000020 +#endif + +GLWindow::GLWindow() +{ + const float animationStart = 0.0; + const float animationEnd = 10.0; + const float animationLength = 1000; + + m_animationGroup = new QSequentialAnimationGroup(this); + m_animationGroup->setLoopCount(-1); + + m_animationForward = new QPropertyAnimation(this, QByteArrayLiteral("blurRadius")); + m_animationForward->setStartValue(animationStart); + m_animationForward->setEndValue(animationEnd); + m_animationForward->setDuration(animationLength); + m_animationGroup->addAnimation(m_animationForward); + + m_animationBackward = new QPropertyAnimation(this, QByteArrayLiteral("blurRadius")); + m_animationBackward->setStartValue(animationEnd); + m_animationBackward->setEndValue(animationStart); + m_animationBackward->setDuration(animationLength); + m_animationGroup->addAnimation(m_animationBackward); + + m_animationGroup->start(); +} + +GLWindow::~GLWindow() +{ + makeCurrent(); + delete m_texImageInput; + delete m_texImageProcessed; + delete m_texImageTmp; + delete m_shaderDisplay; + delete m_shaderComputeH; + delete m_shaderComputeV; + delete m_animationGroup; + delete m_animationForward; + delete m_animationBackward; + delete m_vao; +} + +void GLWindow::setBlurRadius(float blurRadius) +{ + int radius = int(blurRadius); + if (radius != m_blurRadius) { + m_blurRadius = radius; + update(); + } +} + +void GLWindow::setAnimating(bool animate) +{ + m_animate = animate; + if (animate) + m_animationGroup->start(); + else + m_animationGroup->stop(); +} + +void GLWindow::keyPressEvent(QKeyEvent *e) +{ + if (e->key() == Qt::Key_Space) { // pause + setAnimating(!m_animate); + } + update(); +} + + + + +static const char *vsDisplaySource = + "const vec4 vertices[4] = vec4[4] (\n" + " vec4( -1.0, 1.0, 0.0, 1.0),\n" + " vec4( -1.0, -1.0, 0.0, 1.0),\n" + " vec4( 1.0, 1.0, 0.0, 1.0),\n" + " vec4( 1.0, -1.0, 0.0, 1.0)\n" + ");\n" + "const vec2 texCoords[4] = vec2[4] (\n" + " vec2( 0.0, 1.0),\n" + " vec2( 0.0, 0.0),\n" + " vec2( 1.0, 1.0),\n" + " vec2( 1.0, 0.0)\n" + ");\n" + "out vec2 texCoord;\n" + "uniform mat4 matProjection;\n" + "uniform vec2 imageRatio;\n" + "void main() {\n" + " gl_Position = matProjection * ( vertices[gl_VertexID] * vec4(imageRatio,0,1) );\n" + " texCoord = texCoords[gl_VertexID];\n" + "}\n"; + +static const char *fsDisplaySource = + "in lowp vec2 texCoord; \n" + "uniform sampler2D samImage; \n" + "layout(location = 0) out lowp vec4 color;\n" + "void main() {\n" + " lowp vec4 texColor = texture(samImage,texCoord);\n" + " color = vec4(texColor.rgb, 1.0);\n" + "}\n"; + +static const char *csComputeSourceV = + "#define COMPUTEPATCHSIZE 10 // Setting this to 10 to comply with MAX_COMPUTE_WORK_GROUP_INVOCATIONS for both OpenGL and OpenGLES - see QTBUG-79374 \n" + "#define IMGFMT rgba8 \n" + "layout (local_size_x = COMPUTEPATCHSIZE, local_size_y = COMPUTEPATCHSIZE) in;\n" + "layout(binding=0, IMGFMT) uniform readonly highp image2D inputImage; // Use a sampler to improve performance \n" + "layout(binding=1, IMGFMT) uniform writeonly highp image2D resultImage;\n" + "uniform int radius;\n" + "const float cutoff = 2.2;\n" + + "float expFactor() { // a function, otherwise MESA produces error: initializer of global variable `expFactor' must be a constant expression\n" + " float sigma = clamp(float(radius) / cutoff,0.02,100.0);\n" + " return 1.0 / (2.0 * sigma * sigma);\n" + "}\n" + + "float gaussian(float distance, float expfactor) {\n" + " return exp( -(distance * distance) * expfactor);\n" + "}\n" + + "void main() {\n" + " ivec2 imgSize = imageSize(resultImage);\n" + " int x = int(gl_GlobalInvocationID.x);\n" + " int y = int(gl_GlobalInvocationID.y);\n" + " if ( (x >= imgSize.x) || (y >= imgSize.y) ) return;\n" + " vec4 sumPixels = vec4(0.0);\n" + " float sumWeights = 0.0;\n" + " int left = clamp(x - radius, 0, imgSize.x - 1);\n" + " int right = clamp(x + radius, 0, imgSize.x - 1);\n" + " int top = clamp(y - radius, 0, imgSize.y - 1);\n" + " int bottom = clamp(y + radius, 0, imgSize.y - 1);\n" + " float expfactor = expFactor();\n" + " for (int iY = top; iY <= bottom; iY++) {\n" + " float dy = float(abs(iY - y));\n" + " vec4 imgValue = imageLoad(inputImage, ivec2(x,iY));\n" + " float weight = gaussian(dy, expfactor);\n" + " sumWeights += weight;\n" + " sumPixels += (imgValue * weight);\n" + " }\n" + " sumPixels /= sumWeights;\n" + " imageStore(resultImage, ivec2(x,y), sumPixels);\n" + "}\n"; + +static const char *csComputeSourceH = + "#define COMPUTEPATCHSIZE 10 \n" + "#define IMGFMT rgba8 \n" + "layout (local_size_x = COMPUTEPATCHSIZE, local_size_y = COMPUTEPATCHSIZE) in;\n" + "layout(binding=0, IMGFMT) uniform readonly highp image2D inputImage; // Use a sampler to improve performance \n" + "layout(binding=1, IMGFMT) uniform writeonly highp image2D resultImage;\n" + "uniform int radius;\n" + "const float cutoff = 2.2;\n" + + "float expFactor() { // a function, otherwise MESA produces error: initializer of global variable `expFactor' must be a constant expression\n" + " float sigma = clamp(float(radius) / cutoff,0.02,100.0);\n" + " return 1.0 / (2.0 * sigma * sigma);\n" + "}\n" + + "float gaussian(float distance, float expfactor) {\n" + " return exp( -(distance * distance) * expfactor);\n" + "}\n" + + "void main() {\n" + " ivec2 imgSize = imageSize(resultImage);\n" + " int x = int(gl_GlobalInvocationID.x);\n" + " int y = int(gl_GlobalInvocationID.y);\n" + " if ( (x >= imgSize.x) || (y >= imgSize.y) ) return;\n" + " vec4 sumPixels = vec4(0.0);\n" + " float sumWeights = 0.0;\n" + " int left = clamp(x - radius, 0, imgSize.x - 1);\n" + " int right = clamp(x + radius, 0, imgSize.x - 1);\n" + " int top = clamp(y - radius, 0, imgSize.y - 1);\n" + " int bottom = clamp(y + radius, 0, imgSize.y - 1);\n" + " float expfactor = expFactor();\n" + " for (int iX = left; iX <= right; iX++) {\n" + " float dx = float(abs(iX - x));\n" + " vec4 imgValue = imageLoad(inputImage, ivec2(iX,y));\n" + " float weight = gaussian(dx, expfactor);\n" + " sumWeights += weight;\n" + " sumPixels += (imgValue * weight);\n" + " }\n" + " sumPixels /= sumWeights;\n" + " imageStore(resultImage, ivec2(x,y), sumPixels);\n" + "}\n"; + + + +QByteArray versionedShaderCode(const char *src) +{ + QByteArray versionedSrc; + + if (QOpenGLContext::currentContext()->isOpenGLES()) + versionedSrc.append(QByteArrayLiteral("#version 310 es\n")); + else + versionedSrc.append(QByteArrayLiteral("#version 430 core\n")); + + versionedSrc.append(src); + return versionedSrc; +} + +void computeProjection(int winWidth, int winHeight, int imgWidth, int imgHeight, QMatrix4x4 &outProjection, QSizeF &outQuadSize) +{ + float ratioImg = float(imgWidth) / float(imgHeight); + float ratioCanvas = float(winWidth) / float(winHeight); + + float correction = ratioImg / ratioCanvas; + float rescaleFactor = 1.0f; + float quadWidth = 1.0f; + float quadHeight = 1.0f; + + if (correction < 1.0f) // canvas larger than image -- height = 1.0, vertical black bands + { + quadHeight = 1.0f; + quadWidth = 1.0f * ratioImg; + rescaleFactor = ratioCanvas; + correction = 1.0f / rescaleFactor; + } + else // image larger than canvas -- width = 1.0, horizontal black bands + { + quadWidth = 1.0f; + quadHeight = 1.0f / ratioImg; + correction = 1.0f / ratioCanvas; + } + + const float frustumWidth = 1.0f * rescaleFactor; + const float frustumHeight = 1.0f * rescaleFactor * correction; + + outProjection = QMatrix4x4(); + outProjection.ortho( + -frustumWidth, + frustumWidth, + -frustumHeight, + frustumHeight, + -1.0f, + 1.0f); + outQuadSize = QSizeF(quadWidth,quadHeight); +} + +void GLWindow::initializeGL() +{ + QOpenGLContext *ctx = QOpenGLContext::currentContext(); + qDebug() << "Got a " + << ctx->format().majorVersion() + << "." + << ctx->format().minorVersion() + << ((ctx->format().renderableType() == QSurfaceFormat::OpenGLES) ? (" GLES") : (" GL")) + << " context"; + + QImage img(":/Qt-logo-medium.png"); + Q_ASSERT(!img.isNull()); + delete m_texImageInput; + m_texImageInput = new QOpenGLTexture(img.convertToFormat(QImage::Format_RGBA8888).mirrored()); + + delete m_texImageTmp; + m_texImageTmp = new QOpenGLTexture(QOpenGLTexture::Target2D); + m_texImageTmp->setFormat(m_texImageInput->format()); + m_texImageTmp->setSize(m_texImageInput->width(),m_texImageInput->height()); + m_texImageTmp->allocateStorage(QOpenGLTexture::RGBA,QOpenGLTexture::UInt8); // WTF? + + delete m_texImageProcessed; + m_texImageProcessed = new QOpenGLTexture(QOpenGLTexture::Target2D); + m_texImageProcessed->setFormat(m_texImageInput->format()); + m_texImageProcessed->setSize(m_texImageInput->width(),m_texImageInput->height()); + m_texImageProcessed->allocateStorage(QOpenGLTexture::RGBA,QOpenGLTexture::UInt8); + + m_texImageProcessed->setMagnificationFilter(QOpenGLTexture::Linear); + m_texImageProcessed->setMinificationFilter(QOpenGLTexture::Linear); + m_texImageProcessed->setWrapMode(QOpenGLTexture::ClampToEdge); + + delete m_shaderDisplay; + m_shaderDisplay = new QOpenGLShaderProgram; + // Prepend the correct version directive to the sources. The rest is the + // same, thanks to the common GLSL syntax. + m_shaderDisplay->addShaderFromSourceCode(QOpenGLShader::Vertex, versionedShaderCode(vsDisplaySource)); + m_shaderDisplay->addShaderFromSourceCode(QOpenGLShader::Fragment, versionedShaderCode(fsDisplaySource)); + m_shaderDisplay->link(); + + delete m_shaderComputeV; + m_shaderComputeV = new QOpenGLShaderProgram; + m_shaderComputeV->addShaderFromSourceCode(QOpenGLShader::Compute, versionedShaderCode(csComputeSourceV)); + m_shaderComputeV->link(); + + delete m_shaderComputeH; + m_shaderComputeH = new QOpenGLShaderProgram; + m_shaderComputeH->addShaderFromSourceCode(QOpenGLShader::Compute, versionedShaderCode(csComputeSourceH)); + m_shaderComputeH->link(); + + // Create a VAO. Not strictly required for ES 3, but it is for plain OpenGL core context. + m_vao = new QOpenGLVertexArrayObject; + m_vao->create(); +} + +void GLWindow::resizeGL(int w, int h) +{ + computeProjection(w,h,m_texImageInput->width(),m_texImageInput->height(),m_proj,m_quadSize); +} + +QSize getWorkGroups(int workGroupSize, const QSize &imageSize) +{ + int x = imageSize.width(); + x = (x % workGroupSize) ? (x / workGroupSize) + 1 : (x / workGroupSize); + int y = imageSize.height(); + y = (y % workGroupSize) ? (y / workGroupSize) + 1 : (y / workGroupSize); + return QSize(x,y); +} + +void GLWindow::paintGL() +{ + // Now use QOpenGLExtraFunctions instead of QOpenGLFunctions as we want to + // do more than what GL(ES) 2.0 offers. + QOpenGLExtraFunctions *f = QOpenGLContext::currentContext()->extraFunctions(); + + + // Process input image + QSize workGroups = getWorkGroups(10, QSize(m_texImageInput->width(), m_texImageInput->height())); + // Pass 1 + f->glBindImageTexture(0, m_texImageInput->textureId(), 0, 0, 0, GL_READ_WRITE, GL_RGBA8); + f->glBindImageTexture(1, m_texImageTmp->textureId(), 0, 0, 0, GL_READ_WRITE, GL_RGBA8); + m_shaderComputeV->bind(); + m_shaderComputeV->setUniformValue("radius",m_blurRadius); + f->glDispatchCompute(workGroups.width(),workGroups.height(),1); + f->glMemoryBarrier(GL_SHADER_IMAGE_ACCESS_BARRIER_BIT); + m_shaderComputeV->release(); + // Pass 2 + f->glBindImageTexture(0, m_texImageTmp->textureId(), 0, 0, 0, GL_READ_WRITE, GL_RGBA8); + f->glBindImageTexture(1, m_texImageProcessed->textureId(), 0, 0, 0, GL_READ_WRITE, GL_RGBA8); + m_shaderComputeH->bind(); + m_shaderComputeH->setUniformValue("radius",m_blurRadius); + f->glDispatchCompute(workGroups.width(),workGroups.height(),1); + f->glMemoryBarrier(GL_SHADER_IMAGE_ACCESS_BARRIER_BIT); + m_shaderComputeH->release(); + // Compute cleanup + f->glBindImageTexture(0, 0, 0, 0, 0, GL_READ_WRITE, GL_RGBA8); + f->glBindImageTexture(1, 0, 0, 0, 0, GL_READ_WRITE, GL_RGBA8); + + // Display processed image + f->glClearColor(0, 0, 0, 1); + f->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + m_texImageProcessed->bind(0); + m_shaderDisplay->bind(); + m_shaderDisplay->setUniformValue("matProjection",m_proj); + m_shaderDisplay->setUniformValue("imageRatio",m_quadSize); + m_shaderDisplay->setUniformValue("samImage",0); + m_vao->bind(); + f->glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); + m_vao->release(); + m_shaderDisplay->release(); + m_texImageProcessed->release(0); +} + diff --git a/tests/manual/examples/opengl/computegles31/glwindow.h b/tests/manual/examples/opengl/computegles31/glwindow.h new file mode 100644 index 0000000000..268647a7aa --- /dev/null +++ b/tests/manual/examples/opengl/computegles31/glwindow.h @@ -0,0 +1,63 @@ +// Copyright (C) 2017 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#ifndef GLWIDGET_H +#define GLWIDGET_H + +#include <QOpenGLWindow> +#include <QOpenGLTexture> +#include <QMatrix4x4> +#include <QVector3D> +#include <QKeyEvent> +#include <QPropertyAnimation> +#include <QSequentialAnimationGroup> +#include <QRectF> + +QT_BEGIN_NAMESPACE + +class QOpenGLTexture; +class QOpenGLShaderProgram; +class QOpenGLBuffer; +class QOpenGLVertexArrayObject; + +QT_END_NAMESPACE + +class GLWindow : public QOpenGLWindow +{ + Q_OBJECT + Q_PROPERTY(float blurRadius READ blurRadius WRITE setBlurRadius) + +public: + GLWindow(); + ~GLWindow(); + + void initializeGL() override; + void resizeGL(int w, int h) override; + void paintGL() override; + + float blurRadius() const { return m_blurRadius; } + void setBlurRadius(float blurRadius); + +protected: + void keyPressEvent(QKeyEvent *e) override; + void setAnimating(bool animate); + +private: + QPropertyAnimation *m_animationForward = nullptr; + QPropertyAnimation *m_animationBackward = nullptr; + QSequentialAnimationGroup *m_animationGroup; + QOpenGLTexture *m_texImageInput = nullptr; + QOpenGLTexture *m_texImageTmp = nullptr; + QOpenGLTexture *m_texImageProcessed = nullptr; + QOpenGLShaderProgram *m_shaderDisplay = nullptr; + QOpenGLShaderProgram *m_shaderComputeV = nullptr; + QOpenGLShaderProgram *m_shaderComputeH = nullptr; + QMatrix4x4 m_proj; + QSizeF m_quadSize; + + int m_blurRadius = 0; + bool m_animate = true; + QOpenGLVertexArrayObject *m_vao = nullptr; +}; + +#endif diff --git a/tests/manual/examples/opengl/computegles31/main.cpp b/tests/manual/examples/opengl/computegles31/main.cpp new file mode 100644 index 0000000000..6c29dd4de9 --- /dev/null +++ b/tests/manual/examples/opengl/computegles31/main.cpp @@ -0,0 +1,101 @@ +// Copyright (C) 2017 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include <QGuiApplication> +#include <QSurfaceFormat> +#include <QOffscreenSurface> +#include <QOpenGLContext> +#include <QDebug> +#include <QPair> +#include "glwindow.h" + +bool OGLSupports(int major, int minor, bool gles = false, QSurfaceFormat::OpenGLContextProfile profile = QSurfaceFormat::NoProfile) +{ + QOpenGLContext ctx; + QSurfaceFormat fmt; + fmt.setVersion(major, minor); + if (gles) { + fmt.setRenderableType(QSurfaceFormat::OpenGLES); + } else { + fmt.setRenderableType(QSurfaceFormat::OpenGL); + fmt.setProfile(profile); + } + + ctx.setFormat(fmt); + ctx.create(); + if (!ctx.isValid()) + return false; + int ctxMajor = ctx.format().majorVersion(); + int ctxMinor = ctx.format().minorVersion(); + bool isGles = (ctx.format().renderableType() == QSurfaceFormat::OpenGLES); + + if (isGles != gles) return false; + if (ctxMajor < major) return false; + if (ctxMajor == major && ctxMinor < minor) + return false; + if (!gles && ctx.format().profile() != profile) + return false; + return true; +} + +int main(int argc, char *argv[]) +{ + QGuiApplication app(argc, argv); + + qDebug() << "Support for GL 2.0 noprof "<<( OGLSupports(2,0,false) ? "yes" : "no"); + qDebug() << "Support for GL 2.0 core "<<( OGLSupports(2,0,false, QSurfaceFormat::CoreProfile) ? "yes" : "no"); + qDebug() << "Support for GL 2.0 compat "<<( OGLSupports(2,0,false, QSurfaceFormat::CompatibilityProfile) ? "yes" : "no"); + qDebug() << "Support for GL 2.1 noprof "<<( OGLSupports(2,1,false) ? "yes" : "no"); + qDebug() << "Support for GL 2.1 core "<<( OGLSupports(2,1,false, QSurfaceFormat::CoreProfile) ? "yes" : "no"); + qDebug() << "Support for GL 2.1 compat "<<( OGLSupports(2,1,false, QSurfaceFormat::CompatibilityProfile) ? "yes" : "no"); + qDebug() << "Support for GL 3.0 noprof "<<( OGLSupports(3,0,false) ? "yes" : "no"); + qDebug() << "Support for GL 3.0 core "<<( OGLSupports(3,0,false, QSurfaceFormat::CoreProfile) ? "yes" : "no"); + qDebug() << "Support for GL 3.0 compat "<<( OGLSupports(3,0,false, QSurfaceFormat::CompatibilityProfile) ? "yes" : "no"); + qDebug() << "Support for GL 3.1 noprof "<<( OGLSupports(3,1,false) ? "yes" : "no"); + qDebug() << "Support for GL 3.1 core "<<( OGLSupports(3,1,false, QSurfaceFormat::CoreProfile) ? "yes" : "no"); + qDebug() << "Support for GL 3.1 compat "<<( OGLSupports(3,1,false, QSurfaceFormat::CompatibilityProfile) ? "yes" : "no"); + qDebug() << "Support for GL 3.2 core "<<( OGLSupports(3,2,false,QSurfaceFormat::CoreProfile) ? "yes" : "no"); + qDebug() << "Support for GL 3.2 compat "<<( OGLSupports(3,2,false,QSurfaceFormat::CompatibilityProfile) ? "yes" : "no"); + qDebug() << "Support for GL 3.3 core "<<( OGLSupports(3,3,false,QSurfaceFormat::CoreProfile) ? "yes" : "no"); + qDebug() << "Support for GL 3.3 compat "<<( OGLSupports(3,3,false,QSurfaceFormat::CompatibilityProfile) ? "yes" : "no"); + qDebug() << "Support for GL 4.0 core "<<( OGLSupports(4,0,false,QSurfaceFormat::CoreProfile) ? "yes" : "no"); + qDebug() << "Support for GL 4.0 compat "<<( OGLSupports(4,0,false,QSurfaceFormat::CompatibilityProfile) ? "yes" : "no"); + qDebug() << "Support for GL 4.1 core "<<( OGLSupports(4,1,false,QSurfaceFormat::CoreProfile) ? "yes" : "no"); + qDebug() << "Support for GL 4.1 compat "<<( OGLSupports(4,1,false,QSurfaceFormat::CompatibilityProfile) ? "yes" : "no"); + qDebug() << "Support for GL 4.2 core "<<( OGLSupports(4,2,false,QSurfaceFormat::CoreProfile) ? "yes" : "no"); + qDebug() << "Support for GL 4.2 compat "<<( OGLSupports(4,2,false,QSurfaceFormat::CompatibilityProfile) ? "yes" : "no"); + qDebug() << "Support for GL 4.3 core "<<( OGLSupports(4,3,false,QSurfaceFormat::CoreProfile) ? "yes" : "no"); + qDebug() << "Support for GL 4.3 compat "<<( OGLSupports(4,3,false,QSurfaceFormat::CompatibilityProfile) ? "yes" : "no"); + qDebug() << "Support for GL 4.4 core "<<( OGLSupports(4,4,false,QSurfaceFormat::CoreProfile) ? "yes" : "no"); + qDebug() << "Support for GL 4.4 compat "<<( OGLSupports(4,4,false,QSurfaceFormat::CompatibilityProfile) ? "yes" : "no"); + qDebug() << "Support for GL 4.5 core "<<( OGLSupports(4,5,false,QSurfaceFormat::CoreProfile) ? "yes" : "no"); + qDebug() << "Support for GL 4.5 compat "<<( OGLSupports(4,5,false,QSurfaceFormat::CompatibilityProfile) ? "yes" : "no"); + qDebug() << "Support for GLES 2.0 "<<( OGLSupports(2,0,true) ? "yes" : "no"); + qDebug() << "Support for GLES 3.0 "<<( OGLSupports(3,0,true) ? "yes" : "no"); + qDebug() << "Support for GLES 3.1 "<<( OGLSupports(3,1,true) ? "yes" : "no"); + qDebug() << "Support for GLES 3.2 "<<( OGLSupports(3,2,true) ? "yes" : "no"); + + QSurfaceFormat fmt; + fmt.setDepthBufferSize(24); + + // Request OpenGL ES 3.1 context, as this is a GLES example. If not available, go for OpenGL 4.3 core. + if (OGLSupports(3,1,true)) { + qDebug("Requesting 3.1 GLES context"); + fmt.setVersion(3, 1); + fmt.setRenderableType(QSurfaceFormat::OpenGLES); + } else if (OGLSupports(4,3,false,QSurfaceFormat::CoreProfile)) { + qDebug("Requesting 4.3 core context"); + fmt.setVersion(4, 3); + fmt.setRenderableType(QSurfaceFormat::OpenGL); + fmt.setProfile(QSurfaceFormat::CoreProfile); + } else { + qWarning("Error: This system does not support OpenGL Compute Shaders! Exiting."); + return -1; + } + QSurfaceFormat::setDefaultFormat(fmt); + + GLWindow glWindow; + glWindow.showMaximized(); + + return app.exec(); +} diff --git a/tests/manual/examples/opengl/contextinfo/CMakeLists.txt b/tests/manual/examples/opengl/contextinfo/CMakeLists.txt new file mode 100644 index 0000000000..ae5c10942a --- /dev/null +++ b/tests/manual/examples/opengl/contextinfo/CMakeLists.txt @@ -0,0 +1,39 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +cmake_minimum_required(VERSION 3.16) +project(contextinfo LANGUAGES CXX) + +if(NOT DEFINED INSTALL_EXAMPLESDIR) + set(INSTALL_EXAMPLESDIR "examples") +endif() + +set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/opengl/contextinfo") + +find_package(Qt6 REQUIRED COMPONENTS Core Gui OpenGL Widgets) + +qt_standard_project_setup() + +qt_add_executable(contextinfo + main.cpp + renderwindow.cpp renderwindow.h + widget.cpp widget.h +) + +set_target_properties(contextinfo PROPERTIES + WIN32_EXECUTABLE TRUE + MACOSX_BUNDLE TRUE +) + +target_link_libraries(contextinfo PRIVATE + Qt6::Core + Qt6::Gui + Qt6::OpenGL + Qt6::Widgets +) + +install(TARGETS contextinfo + RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}" + BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}" + LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}" +) diff --git a/tests/manual/examples/opengl/contextinfo/contextinfo.pro b/tests/manual/examples/opengl/contextinfo/contextinfo.pro new file mode 100644 index 0000000000..ae8f4067b6 --- /dev/null +++ b/tests/manual/examples/opengl/contextinfo/contextinfo.pro @@ -0,0 +1,14 @@ +TEMPLATE = app +QT += widgets opengl +requires(qtConfig(filedialog)) + +SOURCES += main.cpp \ + widget.cpp \ + renderwindow.cpp + +HEADERS += widget.h \ + renderwindow.h + +# install +target.path = $$[QT_INSTALL_EXAMPLES]/opengl/contextinfo +INSTALLS += target diff --git a/tests/manual/examples/opengl/contextinfo/main.cpp b/tests/manual/examples/opengl/contextinfo/main.cpp new file mode 100644 index 0000000000..253425ded9 --- /dev/null +++ b/tests/manual/examples/opengl/contextinfo/main.cpp @@ -0,0 +1,25 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include <QApplication> +#include "widget.h" + +int main(int argc, char **argv) +{ + for (int i = 1; i < argc; ++i) { + if (!qstrcmp(argv[i], "-g")) + QCoreApplication::setAttribute(Qt::AA_UseOpenGLES); + else if (!qstrcmp(argv[i], "-s")) + QCoreApplication::setAttribute(Qt::AA_UseSoftwareOpenGL); + else if (!qstrcmp(argv[i], "-d")) + QCoreApplication::setAttribute(Qt::AA_UseDesktopOpenGL); + } + + QApplication app(argc, argv); + + Widget w; + w.resize(700, 800); + w.show(); + + return app.exec(); +} diff --git a/tests/manual/examples/opengl/contextinfo/renderwindow.cpp b/tests/manual/examples/opengl/contextinfo/renderwindow.cpp new file mode 100644 index 0000000000..64c0f47db9 --- /dev/null +++ b/tests/manual/examples/opengl/contextinfo/renderwindow.cpp @@ -0,0 +1,191 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include "renderwindow.h" +#include <QTimer> +#include <QMatrix4x4> +#include <QOpenGLContext> +#include <QtOpenGL/QOpenGLShaderProgram> +#include <QOpenGLFunctions> + +RenderWindow::RenderWindow(const QSurfaceFormat &format) + : m_context(nullptr), + m_initialized(false), + m_forceGLSL110(false), + m_angle(0.0f) +{ + setSurfaceType(QWindow::OpenGLSurface); + setFormat(format); + m_context = new QOpenGLContext(this); + m_context->setFormat(requestedFormat()); + if (!m_context->create()) { + delete m_context; + m_context = nullptr; + } +} + +void RenderWindow::exposeEvent(QExposeEvent *) +{ + if (isExposed()) + render(); +} + +// ES needs the precision qualifiers. +// On desktop GL QOpenGLShaderProgram inserts dummy defines for highp/mediump/lowp. +static const char *vertexShaderSource110 = + "attribute highp vec4 posAttr;\n" + "attribute lowp vec4 colAttr;\n" + "varying lowp vec4 col;\n" + "uniform highp mat4 matrix;\n" + "void main() {\n" + " col = colAttr;\n" + " gl_Position = matrix * posAttr;\n" + "}\n"; + +static const char *fragmentShaderSource110 = + "varying lowp vec4 col;\n" + "void main() {\n" + " gl_FragColor = col;\n" + "}\n"; + +static const char *vertexShaderSource = + "#version 150\n" + "in vec4 posAttr;\n" + "in vec4 colAttr;\n" + "out vec4 col;\n" + "uniform mat4 matrix;\n" + "void main() {\n" + " col = colAttr;\n" + " gl_Position = matrix * posAttr;\n" + "}\n"; + +static const char *fragmentShaderSource = + "#version 150\n" + "in vec4 col;\n" + "out vec4 fragColor;\n" + "void main() {\n" + " fragColor = col;\n" + "}\n"; + +static GLfloat vertices[] = { + 0.0f, 0.707f, + -0.5f, -0.5f, + 0.5f, -0.5f +}; + +static GLfloat colors[] = { + 1.0f, 0.0f, 0.0f, + 0.0f, 1.0f, 0.0f, + 0.0f, 0.0f, 1.0f +}; + +void RenderWindow::init() +{ + m_program = new QOpenGLShaderProgram(this); + + QSurfaceFormat format = m_context->format(); + bool useNewStyleShader = format.profile() == QSurfaceFormat::CoreProfile; + // Try to handle 3.0 & 3.1 that do not have the core/compatibility profile concept 3.2+ has. + // This may still fail since version 150 (3.2) is specified in the sources but it's worth a try. + if (format.renderableType() == QSurfaceFormat::OpenGL && format.majorVersion() == 3 && format.minorVersion() <= 1) + useNewStyleShader = !format.testOption(QSurfaceFormat::DeprecatedFunctions); + if (m_forceGLSL110) + useNewStyleShader = false; + + const char *vsrc = useNewStyleShader ? vertexShaderSource : vertexShaderSource110; + const char *fsrc = useNewStyleShader ? fragmentShaderSource : fragmentShaderSource110; + qDebug("Using version %s shader", useNewStyleShader ? "150" : "110"); + + if (!m_program->addShaderFromSourceCode(QOpenGLShader::Vertex, vsrc)) { + emit error(m_program->log()); + return; + } + if (!m_program->addShaderFromSourceCode(QOpenGLShader::Fragment, fsrc)) { + emit error(m_program->log()); + return; + } + if (!m_program->link()) { + emit error(m_program->log()); + return; + } + + m_posAttr = m_program->attributeLocation("posAttr"); + m_colAttr = m_program->attributeLocation("colAttr"); + m_matrixUniform = m_program->uniformLocation("matrix"); + + m_vbo.create(); + m_vbo.bind(); + m_vbo.allocate(vertices, sizeof(vertices) + sizeof(colors)); + m_vbo.write(sizeof(vertices), colors, sizeof(colors)); + m_vbo.release(); + + QOpenGLVertexArrayObject::Binder vaoBinder(&m_vao); + if (m_vao.isCreated()) // have VAO support, use it + setupVertexAttribs(); +} + +void RenderWindow::setupVertexAttribs() +{ + m_vbo.bind(); + m_program->setAttributeBuffer(m_posAttr, GL_FLOAT, 0, 2); + m_program->setAttributeBuffer(m_colAttr, GL_FLOAT, sizeof(vertices), 3); + m_program->enableAttributeArray(m_posAttr); + m_program->enableAttributeArray(m_colAttr); + m_vbo.release(); +} + +bool RenderWindow::event(QEvent *ev) +{ + if (ev->type() == QEvent::UpdateRequest) + render(); + return QWindow::event(ev); +} + +void RenderWindow::render() +{ + if (!m_context->makeCurrent(this)) { + emit error(tr("makeCurrent() failed")); + return; + } + + QOpenGLFunctions *f = m_context->functions(); + if (!m_initialized) { + m_initialized = true; + f->glEnable(GL_DEPTH_TEST); + f->glClearColor(0, 0, 0, 1); + init(); + emit ready(); + } + + if (!m_vbo.isCreated()) // init() failed, don't bother with trying to render + return; + + const qreal retinaScale = devicePixelRatio(); + f->glViewport(0, 0, width() * retinaScale, height() * retinaScale); + f->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + + m_program->bind(); + QMatrix4x4 matrix; + matrix.perspective(60.0f, 4.0f / 3.0f, 0.1f, 100.0f); + matrix.translate(0.0f, 0.0f, -2.0f); + matrix.rotate(m_angle, 0.0f, 1.0f, 0.0f); + m_program->setUniformValue(m_matrixUniform, matrix); + + if (m_vao.isCreated()) + m_vao.bind(); + else // no VAO support, set the vertex attribute arrays now + setupVertexAttribs(); + + f->glDrawArrays(GL_TRIANGLES, 0, 3); + + m_vao.release(); + m_program->release(); + + // swapInterval is 1 by default which means that swapBuffers() will (hopefully) block + // and wait for vsync. + m_context->swapBuffers(this); + + m_angle += 1.0f; + + requestUpdate(); +} diff --git a/tests/manual/examples/opengl/contextinfo/renderwindow.h b/tests/manual/examples/opengl/contextinfo/renderwindow.h new file mode 100644 index 0000000000..964dd601a6 --- /dev/null +++ b/tests/manual/examples/opengl/contextinfo/renderwindow.h @@ -0,0 +1,48 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#ifndef RENDERWINDOW_H +#define RENDERWINDOW_H + +#include <QWindow> +#include <QOpenGLVertexArrayObject> +#include <QOpenGLBuffer> + +QT_FORWARD_DECLARE_CLASS(QOpenGLContext) +QT_FORWARD_DECLARE_CLASS(QOpenGLShaderProgram) + +class RenderWindow : public QWindow +{ + Q_OBJECT + +public: + RenderWindow(const QSurfaceFormat &format); + QOpenGLContext *context() { return m_context; } + void exposeEvent(QExposeEvent *) override; + void setForceGLSL110(bool enable) { m_forceGLSL110 = enable; } + +signals: + void ready(); + void error(const QString &msg); + +protected: + bool event(QEvent *ev) override; + +private slots: + void render(); + +private: + void init(); + void setupVertexAttribs(); + + QOpenGLContext *m_context; + bool m_initialized; + bool m_forceGLSL110; + QOpenGLShaderProgram *m_program; + int m_posAttr, m_colAttr, m_matrixUniform; + QOpenGLVertexArrayObject m_vao; + QOpenGLBuffer m_vbo; + float m_angle; +}; + +#endif // RENDERWINDOW_H diff --git a/tests/manual/examples/opengl/contextinfo/widget.cpp b/tests/manual/examples/opengl/contextinfo/widget.cpp new file mode 100644 index 0000000000..bc31497039 --- /dev/null +++ b/tests/manual/examples/opengl/contextinfo/widget.cpp @@ -0,0 +1,360 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include "widget.h" +#include "renderwindow.h" +#include <QVBoxLayout> +#include <QComboBox> +#include <QGroupBox> +#include <QRadioButton> +#include <QCheckBox> +#include <QHBoxLayout> +#include <QLabel> +#include <QList> +#include <QByteArray> +#include <QPushButton> +#include <QTextEdit> +#include <QSplitter> +#include <QGuiApplication> +#include <QSurfaceFormat> +#include <QOpenGLContext> +#include <QOpenGLFunctions> +#include <QDebug> +#include <QTextStream> + +struct Version { + const char *str; + int major; + int minor; +}; + +static struct Version versions[] = { + { "1.0", 1, 0 }, + { "1.1", 1, 1 }, + { "1.2", 1, 2 }, + { "1.3", 1, 3 }, + { "1.4", 1, 4 }, + { "1.5", 1, 5 }, + { "2.0", 2, 0 }, + { "2.1", 2, 1 }, + { "3.0", 3, 0 }, + { "3.1", 3, 1 }, + { "3.2", 3, 2 }, + { "3.3", 3, 3 }, + { "4.0", 4, 0 }, + { "4.1", 4, 1 }, + { "4.2", 4, 2 }, + { "4.3", 4, 3 }, + { "4.4", 4, 4 }, + { "4.5", 4, 5 } +}; + +struct Profile { + const char *str; + QSurfaceFormat::OpenGLContextProfile profile; +}; + +static struct Profile profiles[] = { + { "none", QSurfaceFormat::NoProfile }, + { "core", QSurfaceFormat::CoreProfile }, + { "compatibility", QSurfaceFormat::CompatibilityProfile } +}; + +struct Option { + const char *str; + QSurfaceFormat::FormatOption option; +}; + +static struct Option options[] = { + { "deprecated functions (not forward compatible)", QSurfaceFormat::DeprecatedFunctions }, + { "debug context", QSurfaceFormat::DebugContext }, + { "stereo buffers", QSurfaceFormat::StereoBuffers }, + // This is not a QSurfaceFormat option but is helpful to determine if the driver + // allows compiling old-style shaders with core profile. + { "force version 110 shaders", QSurfaceFormat::FormatOption(0) } +}; + +struct Renderable { + const char *str; + QSurfaceFormat::RenderableType renderable; +}; + +static struct Renderable renderables[] = { + { "default", QSurfaceFormat::DefaultRenderableType }, +#ifndef Q_OS_ANDROID + { "OpenGL", QSurfaceFormat::OpenGL }, +#endif + { "OpenGL ES", QSurfaceFormat::OpenGLES } +}; + +void Widget::addVersions(QLayout *layout) +{ + QHBoxLayout *hbox = new QHBoxLayout; + hbox->setSpacing(20); + QLabel *label = new QLabel(tr("Context &version: ")); + hbox->addWidget(label); + m_version = new QComboBox; + m_version->setMinimumWidth(60); + label->setBuddy(m_version); + hbox->addWidget(m_version); + for (size_t i = 0; i < sizeof(versions) / sizeof(Version); ++i) { + m_version->addItem(QString::fromLatin1(versions[i].str)); + if (versions[i].major == 2 && versions[i].minor == 0) + m_version->setCurrentIndex(m_version->count() - 1); + } + + QPushButton *btn = new QPushButton(tr("Create context")); + connect(btn, &QPushButton::clicked, this, &Widget::start); + btn->setMinimumSize(120, 40); + hbox->addWidget(btn); + + layout->addItem(hbox); +} + +void Widget::addProfiles(QLayout *layout) +{ + QGroupBox *groupBox = new QGroupBox(tr("Profile")); + QVBoxLayout *vbox = new QVBoxLayout; + for (size_t i = 0; i < sizeof(profiles) / sizeof(Profile); ++i) + vbox->addWidget(new QRadioButton(QString::fromLatin1(profiles[i].str))); + static_cast<QRadioButton *>(vbox->itemAt(0)->widget())->setChecked(true); + groupBox->setLayout(vbox); + layout->addWidget(groupBox); + m_profiles = vbox; +} + +void Widget::addOptions(QLayout *layout) +{ + QGroupBox *groupBox = new QGroupBox(tr("Options")); + QVBoxLayout *vbox = new QVBoxLayout; + for (size_t i = 0; i < sizeof(options) / sizeof(Option); ++i) + vbox->addWidget(new QCheckBox(QString::fromLatin1(options[i].str))); + groupBox->setLayout(vbox); + layout->addWidget(groupBox); + m_options = vbox; +} + +void Widget::addRenderableTypes(QLayout *layout) +{ + QGroupBox *groupBox = new QGroupBox(tr("Renderable type")); + QVBoxLayout *vbox = new QVBoxLayout; + for (size_t i = 0; i < sizeof(renderables) / sizeof(Renderable); ++i) + vbox->addWidget(new QRadioButton(QString::fromLatin1(renderables[i].str))); + static_cast<QRadioButton *>(vbox->itemAt(0)->widget())->setChecked(true); + groupBox->setLayout(vbox); + layout->addWidget(groupBox); + m_renderables = vbox; +} + +void Widget::addRenderWindow() +{ + m_renderWindowLayout->addWidget(m_renderWindowContainer); +} + +static QWidget *widgetWithLayout(QLayout *layout) +{ + QWidget *w = new QWidget; + w->setLayout(layout); + return w; +} + +Widget::Widget(QWidget *parent) + : QWidget(parent) +{ + QVBoxLayout *layout = new QVBoxLayout; + QSplitter *vsplit = new QSplitter(Qt::Vertical); + layout->addWidget(vsplit); + + QSplitter *hsplit = new QSplitter; + + QVBoxLayout *settingsLayout = new QVBoxLayout; + addVersions(settingsLayout); + addProfiles(settingsLayout); + addOptions(settingsLayout); + addRenderableTypes(settingsLayout); + hsplit->addWidget(widgetWithLayout(settingsLayout)); + + QVBoxLayout *outputLayout = new QVBoxLayout; + m_output = new QTextEdit; + m_output->setReadOnly(true); + outputLayout->addWidget(m_output); + m_extensions = new QTextEdit; + m_extensions->setReadOnly(true); + outputLayout->addWidget(m_extensions); + hsplit->addWidget(widgetWithLayout(outputLayout)); + + hsplit->setStretchFactor(0, 4); + hsplit->setStretchFactor(1, 6); + vsplit->addWidget(hsplit); + + m_renderWindowLayout = new QVBoxLayout; + vsplit->addWidget(widgetWithLayout(m_renderWindowLayout)); + vsplit->setStretchFactor(1, 5); + + m_renderWindowContainer = new QWidget; + addRenderWindow(); + + QString description; + QTextStream str(&description); + str << "Qt " << QT_VERSION_STR << ' ' << QGuiApplication::platformName(); + const char *openGlVariables[] = + {"QT_ANGLE_PLATFORM", "QT_OPENGL", "QT_OPENGL_BUGLIST", "QT_OPENGL_DLL"}; + const size_t variableCount = sizeof(openGlVariables) / sizeof(openGlVariables[0]); + for (size_t v = 0; v < variableCount; ++v) { + if (qEnvironmentVariableIsSet(openGlVariables[v])) + str << ' ' << openGlVariables[v] << '=' << qgetenv(openGlVariables[v]); + } + if (QCoreApplication::testAttribute(Qt::AA_UseOpenGLES)) + str << " Qt::AA_UseOpenGLES"; + if (QCoreApplication::testAttribute(Qt::AA_UseSoftwareOpenGL)) + str << " Qt::AA_UseSoftwareOpenGL"; + if (QCoreApplication::testAttribute(Qt::AA_UseDesktopOpenGL)) + str << " Qt::AA_UseDesktopOpenGL"; + layout->addWidget(new QLabel(description)); + + setLayout(layout); +} + +void Widget::start() +{ + QSurfaceFormat fmt; + + int idx = m_version->currentIndex(); + if (idx < 0) + return; + fmt.setVersion(versions[idx].major, versions[idx].minor); + + for (size_t i = 0; i < sizeof(profiles) / sizeof(Profile); ++i) + if (static_cast<QRadioButton *>(m_profiles->itemAt(int(i))->widget())->isChecked()) { + fmt.setProfile(profiles[i].profile); + break; + } + + bool forceGLSL110 = false; + for (size_t i = 0; i < sizeof(options) / sizeof(Option); ++i) + if (static_cast<QCheckBox *>(m_options->itemAt(int(i))->widget())->isChecked()) { + if (options[i].option) + fmt.setOption(options[i].option); + else if (i == 3) + forceGLSL110 = true; + } + + for (size_t i = 0; i < sizeof(renderables) / sizeof(Renderable); ++i) + if (static_cast<QRadioButton *>(m_renderables->itemAt(int(i))->widget())->isChecked()) { + fmt.setRenderableType(renderables[i].renderable); + break; + } + + // The example rendering will need a depth buffer. + fmt.setDepthBufferSize(16); + + m_output->clear(); + m_extensions->clear(); + qDebug() << "Requesting surface format" << fmt; + + m_renderWindowLayout->removeWidget(m_renderWindowContainer); + delete m_renderWindowContainer; + + RenderWindow *renderWindow = new RenderWindow(fmt); + if (!renderWindow->context()) { + m_output->append(tr("Failed to create context")); + delete renderWindow; + m_renderWindowContainer = new QWidget; + addRenderWindow(); + return; + } + m_surface = renderWindow; + + renderWindow->setForceGLSL110(forceGLSL110); + connect(renderWindow, &RenderWindow::ready, this, &Widget::renderWindowReady); + connect(renderWindow, &RenderWindow::error, this, &Widget::renderWindowError); + + m_renderWindowContainer = QWidget::createWindowContainer(renderWindow); + addRenderWindow(); +} + +void Widget::printFormat(const QSurfaceFormat &format) +{ + m_output->append(tr("OpenGL version: %1.%2").arg(format.majorVersion()).arg(format.minorVersion())); + + for (size_t i = 0; i < sizeof(profiles) / sizeof(Profile); ++i) + if (profiles[i].profile == format.profile()) { + m_output->append(tr("Profile: %1").arg(QString::fromLatin1(profiles[i].str))); + break; + } + + QString opts; + for (size_t i = 0; i < sizeof(options) / sizeof(Option); ++i) + if (format.testOption(options[i].option)) + opts += QString::fromLatin1(options[i].str) + QLatin1Char(' '); + m_output->append(tr("Options: %1").arg(opts)); + + for (size_t i = 0; i < sizeof(renderables) / sizeof(Renderable); ++i) + if (renderables[i].renderable == format.renderableType()) { + m_output->append(tr("Renderable type: %1").arg(QString::fromLatin1(renderables[i].str))); + break; + } + + m_output->append(tr("Depth buffer size: %1").arg(QString::number(format.depthBufferSize()))); + m_output->append(tr("Stencil buffer size: %1").arg(QString::number(format.stencilBufferSize()))); + m_output->append(tr("Samples: %1").arg(QString::number(format.samples()))); + m_output->append(tr("Red buffer size: %1").arg(QString::number(format.redBufferSize()))); + m_output->append(tr("Green buffer size: %1").arg(QString::number(format.greenBufferSize()))); + m_output->append(tr("Blue buffer size: %1").arg(QString::number(format.blueBufferSize()))); + m_output->append(tr("Alpha buffer size: %1").arg(QString::number(format.alphaBufferSize()))); + m_output->append(tr("Swap interval: %1").arg(QString::number(format.swapInterval()))); +} + +void Widget::renderWindowReady() +{ + QOpenGLContext *context = QOpenGLContext::currentContext(); + Q_ASSERT(context); + + QString vendor, renderer, version, glslVersion; + const GLubyte *p; + QOpenGLFunctions *f = context->functions(); + if ((p = f->glGetString(GL_VENDOR))) + vendor = QString::fromLatin1(reinterpret_cast<const char *>(p)); + if ((p = f->glGetString(GL_RENDERER))) + renderer = QString::fromLatin1(reinterpret_cast<const char *>(p)); + if ((p = f->glGetString(GL_VERSION))) + version = QString::fromLatin1(reinterpret_cast<const char *>(p)); + if ((p = f->glGetString(GL_SHADING_LANGUAGE_VERSION))) + glslVersion = QString::fromLatin1(reinterpret_cast<const char *>(p)); + + m_output->append(tr("*** Context information ***")); + m_output->append(tr("Vendor: %1").arg(vendor)); + m_output->append(tr("Renderer: %1").arg(renderer)); + m_output->append(tr("OpenGL version: %1").arg(version)); + m_output->append(tr("GLSL version: %1").arg(glslVersion)); + + m_output->append(tr("\n*** QSurfaceFormat from context ***")); + printFormat(context->format()); + + m_output->append(tr("\n*** QSurfaceFormat from window surface ***")); + printFormat(m_surface->format()); + + m_output->append(tr("\n*** Qt build information ***")); + const char *gltype[] = { "Desktop", "GLES 2", "GLES 1" }; + m_output->append(tr("Qt OpenGL configuration: %1") + .arg(QString::fromLatin1(gltype[QOpenGLContext::openGLModuleType()]))); +#if defined(Q_OS_WIN) + using namespace QNativeInterface; + m_output->append(tr("Qt OpenGL library handle: %1") + .arg(QString::number(qintptr(QWGLContext::openGLModuleHandle()), 16))); +#endif + + QList<QByteArray> extensionList = context->extensions().values(); + std::sort(extensionList.begin(), extensionList.end()); + m_extensions->append(tr("Found %1 extensions:").arg(extensionList.count())); + for (const QByteArray &ext : std::as_const(extensionList)) + m_extensions->append(QString::fromLatin1(ext)); + + m_output->moveCursor(QTextCursor::Start); + m_extensions->moveCursor(QTextCursor::Start); +} + +void Widget::renderWindowError(const QString &msg) +{ + m_output->append(tr("An error has occurred:\n%1").arg(msg)); +} diff --git a/tests/manual/examples/opengl/contextinfo/widget.h b/tests/manual/examples/opengl/contextinfo/widget.h new file mode 100644 index 0000000000..e5c31fcaa7 --- /dev/null +++ b/tests/manual/examples/opengl/contextinfo/widget.h @@ -0,0 +1,46 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#ifndef WIDGET_H +#define WIDGET_H + +#include <QWidget> + +QT_FORWARD_DECLARE_CLASS(QComboBox) +QT_FORWARD_DECLARE_CLASS(QTextEdit) +QT_FORWARD_DECLARE_CLASS(QVBoxLayout) +QT_FORWARD_DECLARE_CLASS(QSurfaceFormat) +QT_FORWARD_DECLARE_CLASS(QSurface) + +class Widget : public QWidget +{ + Q_OBJECT + +public: + explicit Widget(QWidget *parent = nullptr); + +private slots: + void start(); + void renderWindowReady(); + void renderWindowError(const QString &msg); + +private: + void addVersions(QLayout *layout); + void addProfiles(QLayout *layout); + void addOptions(QLayout *layout); + void addRenderableTypes(QLayout *layout); + void addRenderWindow(); + void printFormat(const QSurfaceFormat &format); + + QComboBox *m_version; + QLayout *m_profiles; + QLayout *m_options; + QLayout *m_renderables; + QTextEdit *m_output; + QTextEdit *m_extensions; + QVBoxLayout *m_renderWindowLayout; + QWidget *m_renderWindowContainer; + QSurface *m_surface; +}; + +#endif // WIDGET_H diff --git a/tests/manual/examples/opengl/hellowindow/CMakeLists.txt b/tests/manual/examples/opengl/hellowindow/CMakeLists.txt new file mode 100644 index 0000000000..3224c81ccc --- /dev/null +++ b/tests/manual/examples/opengl/hellowindow/CMakeLists.txt @@ -0,0 +1,39 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +cmake_minimum_required(VERSION 3.16) +project(hellowindow LANGUAGES CXX) + +if(NOT DEFINED INSTALL_EXAMPLESDIR) + set(INSTALL_EXAMPLESDIR "examples") +endif() + +set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/opengl/hellowindow") + +find_package(Qt6 REQUIRED COMPONENTS Core Gui OpenGL) + +qt_standard_project_setup() + +qt_add_executable(hellowindow + hellowindow.cpp hellowindow.h + main.cpp +) + +set_target_properties(hellowindow PROPERTIES + WIN32_EXECUTABLE TRUE + MACOSX_BUNDLE TRUE +) + +target_link_libraries(hellowindow PRIVATE + Qt6::Core + Qt6::CorePrivate + Qt6::Gui + Qt6::GuiPrivate + Qt6::OpenGL +) + +install(TARGETS hellowindow + RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}" + BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}" + LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}" +) diff --git a/tests/manual/examples/opengl/hellowindow/hellowindow.cpp b/tests/manual/examples/opengl/hellowindow/hellowindow.cpp new file mode 100644 index 0000000000..c9cad95563 --- /dev/null +++ b/tests/manual/examples/opengl/hellowindow/hellowindow.cpp @@ -0,0 +1,305 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include "hellowindow.h" + +#include <QOpenGLContext> +#include <QOpenGLFunctions> +#include <QRandomGenerator> +#include <qmath.h> +#include <QElapsedTimer> + +Renderer::Renderer(const QSurfaceFormat &format, Renderer *share, QScreen *screen) + : m_initialized(false) + , m_format(format) +{ + m_context = new QOpenGLContext(this); + if (screen) + m_context->setScreen(screen); + m_context->setFormat(format); + if (share) + m_context->setShareContext(share->m_context); + m_context->create(); + + m_backgroundColor = QColor::fromRgbF(0.1f, 0.1f, 0.2f, 1.0f); + m_backgroundColor.setRed(QRandomGenerator::global()->bounded(64)); + m_backgroundColor.setGreen(QRandomGenerator::global()->bounded(128)); + m_backgroundColor.setBlue(QRandomGenerator::global()->bounded(256)); +} + +HelloWindow::HelloWindow(const QSharedPointer<Renderer> &renderer, QScreen *screen) + : m_colorIndex(0), m_renderer(renderer) +{ + setSurfaceType(QWindow::OpenGLSurface); + setFlags(Qt::Window | Qt::WindowSystemMenuHint | Qt::WindowTitleHint | Qt::WindowMinMaxButtonsHint | Qt::WindowCloseButtonHint); + + setGeometry(QRect(10, 10, 640, 480)); + + setFormat(renderer->format()); + if (screen) + setScreen(screen); + + create(); + + updateColor(); + + connect(renderer.data(), &Renderer::requestUpdate, this, &QWindow::requestUpdate); +} + +void HelloWindow::exposeEvent(QExposeEvent *) +{ + if (isExposed()) + render(); +} + +bool HelloWindow::event(QEvent *ev) +{ + if (ev->type() == QEvent::UpdateRequest && isExposed()) + render(); + return QWindow::event(ev); +} + +void HelloWindow::render() +{ + static QElapsedTimer timer; + if (!timer.isValid()) + timer.start(); + qreal a = (qreal)(((timer.elapsed() * 3) % 36000) / 100.0); + auto call = [this, r = m_renderer.data(), a, c = color()]() { r->render(this, a, c); }; + QMetaObject::invokeMethod(m_renderer.data(), call); +} + +void HelloWindow::mousePressEvent(QMouseEvent *) +{ + updateColor(); +} + +QColor HelloWindow::color() const +{ + return m_color; +} + +void HelloWindow::updateColor() +{ + QColor colors[] = + { + QColor(100, 255, 0), + QColor(0, 100, 255) + }; + + m_color = colors[m_colorIndex]; + m_colorIndex = 1 - m_colorIndex; +} + +void Renderer::render(HelloWindow *surface, qreal angle, const QColor &color) +{ + if (!m_context->makeCurrent(surface)) + return; + + QSize viewSize = surface->size(); + + if (!m_initialized) { + initialize(); + m_initialized = true; + } + + QOpenGLFunctions *f = m_context->functions(); + f->glViewport(0, 0, viewSize.width() * surface->devicePixelRatio(), viewSize.height() * surface->devicePixelRatio()); + f->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + + f->glClearColor(m_backgroundColor.redF(), m_backgroundColor.greenF(), m_backgroundColor.blueF(), m_backgroundColor.alphaF()); + f->glFrontFace(GL_CW); + f->glCullFace(GL_FRONT); + f->glEnable(GL_CULL_FACE); + f->glEnable(GL_DEPTH_TEST); + + m_program->bind(); + m_vbo.bind(); + + m_program->enableAttributeArray(vertexAttr); + m_program->enableAttributeArray(normalAttr); + m_program->setAttributeBuffer(vertexAttr, GL_FLOAT, 0, 3); + const int verticesSize = vertices.count() * 3 * sizeof(GLfloat); + m_program->setAttributeBuffer(normalAttr, GL_FLOAT, verticesSize, 3); + + QMatrix4x4 modelview; + modelview.rotate(angle, 0.0f, 1.0f, 0.0f); + modelview.rotate(angle, 1.0f, 0.0f, 0.0f); + modelview.rotate(angle, 0.0f, 0.0f, 1.0f); + modelview.translate(0.0f, -0.2f, 0.0f); + + m_program->setUniformValue(matrixUniform, modelview); + m_program->setUniformValue(colorUniform, color); + + m_context->functions()->glDrawArrays(GL_TRIANGLES, 0, vertices.size()); + + m_context->swapBuffers(surface); + + emit requestUpdate(); +} + +Q_GLOBAL_STATIC(QMutex, initMutex) + +void Renderer::initialize() +{ + // Threaded shader compilation can confuse some drivers. Avoid it. + QMutexLocker lock(initMutex()); + + QOpenGLShader *vshader = new QOpenGLShader(QOpenGLShader::Vertex, this); + vshader->compileSourceCode( + "attribute highp vec4 vertex;" + "attribute mediump vec3 normal;" + "uniform mediump mat4 matrix;" + "uniform lowp vec4 sourceColor;" + "varying mediump vec4 color;" + "void main(void)" + "{" + " vec3 toLight = normalize(vec3(0.0, 0.3, 1.0));" + " float angle = max(dot(normal, toLight), 0.0);" + " vec3 col = sourceColor.rgb;" + " color = vec4(col * 0.2 + col * 0.8 * angle, 1.0);" + " color = clamp(color, 0.0, 1.0);" + " gl_Position = matrix * vertex;" + "}"); + + QOpenGLShader *fshader = new QOpenGLShader(QOpenGLShader::Fragment, this); + fshader->compileSourceCode( + "varying mediump vec4 color;" + "void main(void)" + "{" + " gl_FragColor = color;" + "}"); + + m_program = new QOpenGLShaderProgram(this); + m_program->addShader(vshader); + m_program->addShader(fshader); + m_program->link(); + m_program->bind(); + + vertexAttr = m_program->attributeLocation("vertex"); + normalAttr = m_program->attributeLocation("normal"); + matrixUniform = m_program->uniformLocation("matrix"); + colorUniform = m_program->uniformLocation("sourceColor"); + + createGeometry(); + + m_vbo.create(); + m_vbo.bind(); + const int verticesSize = vertices.count() * 3 * sizeof(GLfloat); + m_vbo.allocate(verticesSize * 2); + m_vbo.write(0, vertices.constData(), verticesSize); + m_vbo.write(verticesSize, normals.constData(), verticesSize); +} + +void Renderer::createGeometry() +{ + vertices.clear(); + normals.clear(); + + qreal x1 = +0.06f; + qreal y1 = -0.14f; + qreal x2 = +0.14f; + qreal y2 = -0.06f; + qreal x3 = +0.08f; + qreal y3 = +0.00f; + qreal x4 = +0.30f; + qreal y4 = +0.22f; + + quad(x1, y1, x2, y2, y2, x2, y1, x1); + quad(x3, y3, x4, y4, y4, x4, y3, x3); + + extrude(x1, y1, x2, y2); + extrude(x2, y2, y2, x2); + extrude(y2, x2, y1, x1); + extrude(y1, x1, x1, y1); + extrude(x3, y3, x4, y4); + extrude(x4, y4, y4, x4); + extrude(y4, x4, y3, x3); + + const int NumSectors = 100; + const qreal sectorAngle = 2 * qreal(M_PI) / NumSectors; + for (int i = 0; i < NumSectors; ++i) { + qreal angle = i * sectorAngle; + qreal x5 = 0.30 * qSin(angle); + qreal y5 = 0.30 * qCos(angle); + qreal x6 = 0.20 * qSin(angle); + qreal y6 = 0.20 * qCos(angle); + + angle += sectorAngle; + qreal x7 = 0.20 * qSin(angle); + qreal y7 = 0.20 * qCos(angle); + qreal x8 = 0.30 * qSin(angle); + qreal y8 = 0.30 * qCos(angle); + + quad(x5, y5, x6, y6, x7, y7, x8, y8); + + extrude(x6, y6, x7, y7); + extrude(x8, y8, x5, y5); + } + + for (int i = 0;i < vertices.size();i++) + vertices[i] *= 2.0f; +} + +void Renderer::quad(qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, qreal x4, qreal y4) +{ + vertices << QVector3D(x1, y1, -0.05f); + vertices << QVector3D(x2, y2, -0.05f); + vertices << QVector3D(x4, y4, -0.05f); + + vertices << QVector3D(x3, y3, -0.05f); + vertices << QVector3D(x4, y4, -0.05f); + vertices << QVector3D(x2, y2, -0.05f); + + QVector3D n = QVector3D::normal + (QVector3D(x2 - x1, y2 - y1, 0.0f), QVector3D(x4 - x1, y4 - y1, 0.0f)); + + normals << n; + normals << n; + normals << n; + + normals << n; + normals << n; + normals << n; + + vertices << QVector3D(x4, y4, 0.05f); + vertices << QVector3D(x2, y2, 0.05f); + vertices << QVector3D(x1, y1, 0.05f); + + vertices << QVector3D(x2, y2, 0.05f); + vertices << QVector3D(x4, y4, 0.05f); + vertices << QVector3D(x3, y3, 0.05f); + + n = QVector3D::normal + (QVector3D(x2 - x4, y2 - y4, 0.0f), QVector3D(x1 - x4, y1 - y4, 0.0f)); + + normals << n; + normals << n; + normals << n; + + normals << n; + normals << n; + normals << n; +} + +void Renderer::extrude(qreal x1, qreal y1, qreal x2, qreal y2) +{ + vertices << QVector3D(x1, y1, +0.05f); + vertices << QVector3D(x2, y2, +0.05f); + vertices << QVector3D(x1, y1, -0.05f); + + vertices << QVector3D(x2, y2, -0.05f); + vertices << QVector3D(x1, y1, -0.05f); + vertices << QVector3D(x2, y2, +0.05f); + + QVector3D n = QVector3D::normal + (QVector3D(x2 - x1, y2 - y1, 0.0f), QVector3D(0.0f, 0.0f, -0.1f)); + + normals << n; + normals << n; + normals << n; + + normals << n; + normals << n; + normals << n; +} diff --git a/tests/manual/examples/opengl/hellowindow/hellowindow.h b/tests/manual/examples/opengl/hellowindow/hellowindow.h new file mode 100644 index 0000000000..1e117ab2e0 --- /dev/null +++ b/tests/manual/examples/opengl/hellowindow/hellowindow.h @@ -0,0 +1,77 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#ifndef HELLOWINDOW_H +#define HELLOWINDOW_H + +#include <QWindow> + +#include <QColor> +#include <QMutex> +#include <QOpenGLShaderProgram> +#include <QOpenGLBuffer> +#include <QSharedPointer> +#include <QTimer> + +class HelloWindow; + +class Renderer : public QObject +{ + Q_OBJECT + +public: + explicit Renderer(const QSurfaceFormat &format, Renderer *share = nullptr, + QScreen *screen = nullptr); + + QSurfaceFormat format() const { return m_format; } + +public slots: + void render(HelloWindow *surface, qreal angle, const QColor &color); + +signals: + void requestUpdate(); + +private: + void initialize(); + + void createGeometry(); + void createBubbles(int number); + void quad(qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, qreal x4, qreal y4); + void extrude(qreal x1, qreal y1, qreal x2, qreal y2); + + QList<QVector3D> vertices; + QList<QVector3D> normals; + int vertexAttr; + int normalAttr; + int matrixUniform; + int colorUniform; + + bool m_initialized; + QSurfaceFormat m_format; + QOpenGLContext *m_context; + QOpenGLShaderProgram *m_program; + QOpenGLBuffer m_vbo; + QColor m_backgroundColor; +}; + +class HelloWindow : public QWindow +{ +public: + explicit HelloWindow(const QSharedPointer<Renderer> &renderer, QScreen *screen = nullptr); + + QColor color() const; + void updateColor(); + +protected: + bool event(QEvent *ev) override; + void exposeEvent(QExposeEvent *event) override; + void mousePressEvent(QMouseEvent *) override; + void render(); + +private: + int m_colorIndex; + QColor m_color; + const QSharedPointer<Renderer> m_renderer; +}; + +#endif // HELLOWINDOW_H diff --git a/tests/manual/examples/opengl/hellowindow/hellowindow.pro b/tests/manual/examples/opengl/hellowindow/hellowindow.pro new file mode 100644 index 0000000000..27c274a378 --- /dev/null +++ b/tests/manual/examples/opengl/hellowindow/hellowindow.pro @@ -0,0 +1,9 @@ +QT += gui-private core-private opengl + +HEADERS += hellowindow.h +SOURCES += hellowindow.cpp main.cpp + +# install +target.path = $$[QT_INSTALL_EXAMPLES]/opengl/hellowindow +INSTALLS += target + diff --git a/tests/manual/examples/opengl/hellowindow/main.cpp b/tests/manual/examples/opengl/hellowindow/main.cpp new file mode 100644 index 0000000000..ee4729a493 --- /dev/null +++ b/tests/manual/examples/opengl/hellowindow/main.cpp @@ -0,0 +1,125 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include "hellowindow.h" + +#include <qpa/qplatformintegration.h> + +#include <QCommandLineParser> +#include <QCommandLineOption> +#include <QGuiApplication> +#include <QScreen> +#include <QThread> + +int main(int argc, char *argv[]) +{ + QGuiApplication app(argc, argv); + + QCoreApplication::setApplicationName("Qt HelloWindow GL Example"); + QCoreApplication::setOrganizationName("QtProject"); + QCoreApplication::setApplicationVersion(QT_VERSION_STR); + QCommandLineParser parser; + parser.setApplicationDescription(QCoreApplication::applicationName()); + parser.addHelpOption(); + parser.addVersionOption(); + QCommandLineOption multipleOption("multiple", "Create multiple windows"); + parser.addOption(multipleOption); + QCommandLineOption multipleSampleOption("multisample", "Multisampling"); + parser.addOption(multipleSampleOption); + QCommandLineOption multipleScreenOption("multiscreen", "Run on multiple screens"); + parser.addOption(multipleScreenOption); + QCommandLineOption timeoutOption("timeout", "Close after 10s"); + parser.addOption(timeoutOption); + parser.process(app); + + // Some platforms can only have one window per screen. Therefore we need to differentiate. + const bool multipleWindows = parser.isSet(multipleOption); + const bool multipleScreens = parser.isSet(multipleScreenOption); + + QScreen *screen = QGuiApplication::primaryScreen(); + + QRect screenGeometry = screen->availableGeometry(); + + QSurfaceFormat format; + format.setDepthBufferSize(16); + if (parser.isSet(multipleSampleOption)) + format.setSamples(4); + + QPoint center = QPoint(screenGeometry.center().x(), screenGeometry.top() + 80); + QSize windowSize(400, 320); + int delta = 40; + + QList<QWindow *> windows; + QSharedPointer<Renderer> rendererA(new Renderer(format)); + + HelloWindow *windowA = new HelloWindow(rendererA); + windowA->setGeometry(QRect(center, windowSize).translated(-windowSize.width() - delta / 2, 0)); + windowA->setTitle(QStringLiteral("Thread A - Context A")); + windowA->setVisible(true); + windows.prepend(windowA); + + QList<QThread *> renderThreads; + if (multipleWindows) { + QSharedPointer<Renderer> rendererB(new Renderer(format, rendererA.data())); + + QThread *renderThread = new QThread; + rendererB->moveToThread(renderThread); + renderThreads << renderThread; + + HelloWindow *windowB = new HelloWindow(rendererA); + windowB->setGeometry(QRect(center, windowSize).translated(delta / 2, 0)); + windowB->setTitle(QStringLiteral("Thread A - Context A")); + windowB->setVisible(true); + windows.prepend(windowB); + + HelloWindow *windowC = new HelloWindow(rendererB); + windowC->setGeometry(QRect(center, windowSize).translated(-windowSize.width() / 2, windowSize.height() + delta)); + windowC->setTitle(QStringLiteral("Thread B - Context B")); + windowC->setVisible(true); + windows.prepend(windowC); + } + if (multipleScreens) { + for (int i = 1; i < QGuiApplication::screens().size(); ++i) { + QScreen *screen = QGuiApplication::screens().at(i); + QSharedPointer<Renderer> renderer(new Renderer(format, rendererA.data(), screen)); + + QThread *renderThread = new QThread; + renderer->moveToThread(renderThread); + renderThreads.prepend(renderThread); + + QRect screenGeometry = screen->availableGeometry(); + QPoint center = screenGeometry.center(); + + QSize windowSize = screenGeometry.size() * 0.8; + + HelloWindow *window = new HelloWindow(renderer, screen); + window->setGeometry(QRect(center, windowSize).translated(-windowSize.width() / 2, -windowSize.height() / 2)); + + QChar id = QChar('B' + i); + window->setTitle(QStringLiteral("Thread ") + id + QStringLiteral(" - Context ") + id); + window->setVisible(true); + windows.prepend(window); + } + } + + for (int i = 0; i < renderThreads.size(); ++i) { + QObject::connect(qGuiApp, &QGuiApplication::lastWindowClosed, renderThreads.at(i), &QThread::quit); + renderThreads.at(i)->start(); + } + + // Quit after 10 seconds. For platforms that do not have windows that are closeable. + if (parser.isSet(timeoutOption)) + QTimer::singleShot(10000, qGuiApp, &QCoreApplication::quit); + + const int exitValue = app.exec(); + + for (int i = 0; i < renderThreads.size(); ++i) { + renderThreads.at(i)->quit(); // some platforms may not have windows to close so ensure quit() + renderThreads.at(i)->wait(); + } + + qDeleteAll(windows); + qDeleteAll(renderThreads); + + return exitValue; +} diff --git a/tests/manual/examples/opengl/paintedwindow/CMakeLists.txt b/tests/manual/examples/opengl/paintedwindow/CMakeLists.txt new file mode 100644 index 0000000000..c1bf33e73c --- /dev/null +++ b/tests/manual/examples/opengl/paintedwindow/CMakeLists.txt @@ -0,0 +1,37 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +cmake_minimum_required(VERSION 3.16) +project(paintedwindow LANGUAGES CXX) + +if(NOT DEFINED INSTALL_EXAMPLESDIR) + set(INSTALL_EXAMPLESDIR "examples") +endif() + +set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/opengl/paintedwindow") + +find_package(Qt6 REQUIRED COMPONENTS Core Gui OpenGL) + +qt_standard_project_setup() + +qt_add_executable(paintedwindow + main.cpp + paintedwindow.cpp paintedwindow.h +) + +set_target_properties(paintedwindow PROPERTIES + WIN32_EXECUTABLE TRUE + MACOSX_BUNDLE TRUE +) + +target_link_libraries(paintedwindow PRIVATE + Qt6::Core + Qt6::Gui + Qt6::OpenGL +) + +install(TARGETS paintedwindow + RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}" + BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}" + LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}" +) diff --git a/tests/manual/examples/opengl/paintedwindow/main.cpp b/tests/manual/examples/opengl/paintedwindow/main.cpp new file mode 100644 index 0000000000..e055e92812 --- /dev/null +++ b/tests/manual/examples/opengl/paintedwindow/main.cpp @@ -0,0 +1,18 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include <QGuiApplication> +#include <QRect> + +#include "paintedwindow.h" + +int main(int argc, char **argv) +{ + QGuiApplication app(argc, argv); + + PaintedWindow window; + window.show(); + + return app.exec(); +} + diff --git a/tests/manual/examples/opengl/paintedwindow/paintedwindow.cpp b/tests/manual/examples/opengl/paintedwindow/paintedwindow.cpp new file mode 100644 index 0000000000..d0b8284157 --- /dev/null +++ b/tests/manual/examples/opengl/paintedwindow/paintedwindow.cpp @@ -0,0 +1,185 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include "paintedwindow.h" + +#include <QGuiApplication> +#include <QOpenGLContext> +#include <QOpenGLPaintDevice> +#include <QPainter> +#include <QPainterPath> +#include <QScreen> +#include <QTimer> + +#include <qmath.h> + +PaintedWindow::PaintedWindow() +{ + QSurfaceFormat format; + format.setStencilBufferSize(8); + format.setSamples(4); + + setSurfaceType(QWindow::OpenGLSurface); + setFlags(Qt::Window | Qt::WindowTitleHint | Qt::WindowSystemMenuHint | Qt::WindowMinMaxButtonsHint | Qt::WindowCloseButtonHint); + setFormat(format); + + create(); + + m_context = new QOpenGLContext(this); + m_context->setFormat(format); + m_context->create(); + + m_animation = new QPropertyAnimation(this, "rotation"); + m_animation->setStartValue(qreal(0)); + m_animation->setEndValue(qreal(1)); + m_animation->setDuration(500); + + QRect screenGeometry = screen()->availableGeometry(); + + QPoint center = screenGeometry.center(); + QRect windowRect = screen()->isLandscape(screen()->orientation()) ? QRect(0, 0, 640, 480) : QRect(0, 0, 480, 640); + setGeometry(QRect(center - windowRect.center(), windowRect.size())); + + m_rotation = 0; + + reportContentOrientationChange(screen()->orientation()); + + m_targetOrientation = contentOrientation(); + m_nextTargetOrientation = Qt::PrimaryOrientation; + + connect(screen(), &QScreen::orientationChanged, this, &PaintedWindow::orientationChanged); + connect(m_animation, &QAbstractAnimation::finished, this, &PaintedWindow::rotationDone); + connect(this, &PaintedWindow::rotationChanged, this, QOverload<>::of(&PaintedWindow::paint)); +} + +void PaintedWindow::exposeEvent(QExposeEvent *) +{ + if (isExposed()) + paint(); +} + +void PaintedWindow::mousePressEvent(QMouseEvent *) +{ + Qt::ScreenOrientation o = contentOrientation(); + switch (o) { + case Qt::LandscapeOrientation: + orientationChanged(Qt::PortraitOrientation); + break; + case Qt::PortraitOrientation: + orientationChanged(Qt::InvertedLandscapeOrientation); + break; + case Qt::InvertedLandscapeOrientation: + orientationChanged(Qt::InvertedPortraitOrientation); + break; + case Qt::InvertedPortraitOrientation: + orientationChanged(Qt::LandscapeOrientation); + break; + default: + Q_ASSERT(false); + } + + paint(); +} + +void PaintedWindow::orientationChanged(Qt::ScreenOrientation newOrientation) +{ + if (contentOrientation() == newOrientation) + return; + + if (m_animation->state() == QAbstractAnimation::Running) { + m_nextTargetOrientation = newOrientation; + return; + } + + QRect rect(0, 0, width(), height()); + + m_prevImage = QImage(width(), height(), QImage::Format_ARGB32_Premultiplied); + m_nextImage = QImage(width(), height(), QImage::Format_ARGB32_Premultiplied); + m_prevImage.fill(0); + m_nextImage.fill(0); + + QPainter p; + p.begin(&m_prevImage); + p.setTransform(screen()->transformBetween(contentOrientation(), screen()->orientation(), rect)); + paint(&p, screen()->mapBetween(contentOrientation(), screen()->orientation(), rect)); + p.end(); + + p.begin(&m_nextImage); + p.setTransform(screen()->transformBetween(newOrientation, screen()->orientation(), rect)); + paint(&p, screen()->mapBetween(newOrientation, screen()->orientation(), rect)); + p.end(); + + m_deltaRotation = screen()->angleBetween(newOrientation, contentOrientation()); + if (m_deltaRotation > 180) + m_deltaRotation = 180 - m_deltaRotation; + + m_targetOrientation = newOrientation; + m_animation->start(); +} + +void PaintedWindow::rotationDone() +{ + reportContentOrientationChange(m_targetOrientation); + if (m_nextTargetOrientation != Qt::PrimaryOrientation) { + Q_ASSERT(m_animation->state() != QAbstractAnimation::Running); + orientationChanged(m_nextTargetOrientation); + m_nextTargetOrientation = Qt::PrimaryOrientation; + } +} + +void PaintedWindow::setRotation(qreal r) +{ + if (r != m_rotation) { + m_rotation = r; + emit rotationChanged(r); + } +} + +void PaintedWindow::paint() +{ + m_context->makeCurrent(this); + + QRect rect(0, 0, width() * devicePixelRatio(), height() * devicePixelRatio()); + + QOpenGLPaintDevice device(size() * devicePixelRatio()); + QPainter painter(&device); + + QPainterPath path; + path.addEllipse(rect); + painter.setCompositionMode(QPainter::CompositionMode_Source); + painter.fillRect(rect, Qt::transparent); + painter.setCompositionMode(QPainter::CompositionMode_SourceOver); + painter.fillPath(path, Qt::blue); + + if (contentOrientation() != m_targetOrientation) { + painter.setRenderHint(QPainter::SmoothPixmapTransform); + painter.save(); + painter.translate(width() / 2, height() / 2); + painter.rotate(m_deltaRotation * m_rotation); + painter.translate(-width() / 2, -height() / 2); + painter.drawImage(0, 0, m_prevImage); + painter.restore(); + painter.translate(width() / 2, height() / 2); + painter.rotate(m_deltaRotation * m_rotation - m_deltaRotation); + painter.translate(-width() / 2, -height() / 2); + painter.setOpacity(m_rotation); + painter.drawImage(0, 0, m_nextImage); + } else { + QRect mapped = screen()->mapBetween(contentOrientation(), screen()->orientation(), rect); + + painter.setTransform(screen()->transformBetween(contentOrientation(), screen()->orientation(), rect)); + paint(&painter, mapped); + painter.end(); + } + + m_context->swapBuffers(this); +} + +void PaintedWindow::paint(QPainter *painter, const QRect &rect) +{ + painter->setRenderHint(QPainter::Antialiasing); + QFont font; + font.setPixelSize(64); + painter->setFont(font); + painter->drawText(rect, Qt::AlignCenter, "Hello"); +} diff --git a/tests/manual/examples/opengl/paintedwindow/paintedwindow.h b/tests/manual/examples/opengl/paintedwindow/paintedwindow.h new file mode 100644 index 0000000000..11a76a3056 --- /dev/null +++ b/tests/manual/examples/opengl/paintedwindow/paintedwindow.h @@ -0,0 +1,62 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#ifndef PAINTEDWINDOW_H +#define PAINTEDWINDOW_H + +#include <QWindow> + +#include <QtGui/qopengl.h> +#include <QtOpenGL/qopenglshaderprogram.h> +#include <QtOpenGL/qopenglframebufferobject.h> + +#include <QPropertyAnimation> + +#include <QColor> +#include <QImage> +#include <QTime> + +QT_BEGIN_NAMESPACE +class QOpenGLContext; +QT_END_NAMESPACE + +class PaintedWindow : public QWindow +{ + Q_OBJECT + Q_PROPERTY(qreal rotation READ rotation WRITE setRotation NOTIFY rotationChanged) + +public: + PaintedWindow(); + + qreal rotation() const { return m_rotation; } + +signals: + void rotationChanged(qreal rotation); + +private slots: + void paint(); + void setRotation(qreal r); + void orientationChanged(Qt::ScreenOrientation newOrientation); + void rotationDone(); + +private: + void exposeEvent(QExposeEvent *) override; + void mousePressEvent(QMouseEvent *) override; + + void paint(QPainter *painter, const QRect &rect); + + QOpenGLContext *m_context; + qreal m_rotation; + + QImage m_prevImage; + QImage m_nextImage; + qreal m_deltaRotation; + + Qt::ScreenOrientation m_targetOrientation; + Qt::ScreenOrientation m_nextTargetOrientation; + + QPropertyAnimation *m_animation; + QTimer *m_paintTimer; +}; + +#endif // PAINTEDWINDOW_H diff --git a/tests/manual/examples/opengl/paintedwindow/paintedwindow.pro b/tests/manual/examples/opengl/paintedwindow/paintedwindow.pro new file mode 100644 index 0000000000..569eebe674 --- /dev/null +++ b/tests/manual/examples/opengl/paintedwindow/paintedwindow.pro @@ -0,0 +1,8 @@ +QT += opengl + +HEADERS += paintedwindow.h +SOURCES += paintedwindow.cpp main.cpp + +# install +target.path = $$[QT_INSTALL_EXAMPLES]/opengl/paintedwindow +INSTALLS += target diff --git a/tests/manual/examples/opengl/qopenglwidget/CMakeLists.txt b/tests/manual/examples/opengl/qopenglwidget/CMakeLists.txt new file mode 100644 index 0000000000..d6e9c268ff --- /dev/null +++ b/tests/manual/examples/opengl/qopenglwidget/CMakeLists.txt @@ -0,0 +1,53 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +cmake_minimum_required(VERSION 3.16) +project(qopenglwidget LANGUAGES CXX) + +if(NOT DEFINED INSTALL_EXAMPLESDIR) + set(INSTALL_EXAMPLESDIR "examples") +endif() + +set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/opengl/qopenglwidget") + +find_package(Qt6 REQUIRED COMPONENTS Core Gui OpenGL OpenGLWidgets Widgets) + +qt_standard_project_setup() + +qt_add_executable(qopenglwidget + bubble.cpp bubble.h + glwidget.cpp glwidget.h + main.cpp + mainwindow.cpp mainwindow.h +) + +set_target_properties(qopenglwidget PROPERTIES + WIN32_EXECUTABLE TRUE + MACOSX_BUNDLE TRUE +) + +target_link_libraries(qopenglwidget PRIVATE + Qt6::Core + Qt6::Gui + Qt6::OpenGL + Qt6::OpenGLWidgets + Qt6::Widgets +) + +# Resources: +set(texture_resource_files + "qt.png" +) + +qt6_add_resources(qopenglwidget "texture" + PREFIX + "/" + FILES + ${texture_resource_files} +) + +install(TARGETS qopenglwidget + RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}" + BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}" + LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}" +) diff --git a/tests/manual/examples/opengl/qopenglwidget/bubble.cpp b/tests/manual/examples/opengl/qopenglwidget/bubble.cpp new file mode 100644 index 0000000000..3c32b62113 --- /dev/null +++ b/tests/manual/examples/opengl/qopenglwidget/bubble.cpp @@ -0,0 +1,99 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include <QtWidgets> + +#include "bubble.h" + +Bubble::Bubble(const QPointF &position, qreal radius, const QPointF &velocity) + : position(position), vel(velocity), radius(radius) +{ + innerColor = randomColor(); + outerColor = randomColor(); + updateBrush(); +} + +//! [0] +void Bubble::updateCache() +{ + delete cache; + cache = new QImage(qRound(radius * 2 + 2), qRound(radius * 2 + 2), QImage::Format_ARGB32_Premultiplied); + cache->fill(0x00000000); + QPainter p(cache); + p.setRenderHint(QPainter::Antialiasing); + QPen pen(Qt::white); + pen.setWidth(2); + p.setPen(pen); + p.setBrush(brush); + p.drawEllipse(1, 1, int(2*radius), int(2*radius)); +} +//! [0] + +Bubble::~Bubble() +{ + delete cache; +} + +void Bubble::updateBrush() +{ + QRadialGradient gradient(QPointF(radius, radius), radius, + QPointF(radius*0.5, radius*0.5)); + + gradient.setColorAt(0, QColor(255, 255, 255, 255)); + gradient.setColorAt(0.25, innerColor); + gradient.setColorAt(1, outerColor); + brush = QBrush(gradient); + updateCache(); +} + +//! [1] +void Bubble::drawBubble(QPainter *painter) +{ + painter->save(); + painter->translate(position.x() - radius, position.y() - radius); + painter->setOpacity(0.8); + painter->drawImage(0, 0, *cache); + painter->restore(); +} +//! [1] + +QColor Bubble::randomColor() +{ + int red = int(185 + QRandomGenerator::global()->bounded(70)); + int green = int(185 + QRandomGenerator::global()->bounded(70)); + int blue = int(205 + QRandomGenerator::global()->bounded(50)); + int alpha = int(91 + QRandomGenerator::global()->bounded(100)); + + return QColor(red, green, blue, alpha); +} + +void Bubble::move(const QRect &bbox) +{ + position += vel; + qreal leftOverflow = position.x() - radius - bbox.left(); + qreal rightOverflow = position.x() + radius - bbox.right(); + qreal topOverflow = position.y() - radius - bbox.top(); + qreal bottomOverflow = position.y() + radius - bbox.bottom(); + + if (leftOverflow < 0.0) { + position.setX(position.x() - 2 * leftOverflow); + vel.setX(-vel.x()); + } else if (rightOverflow > 0.0) { + position.setX(position.x() - 2 * rightOverflow); + vel.setX(-vel.x()); + } + + if (topOverflow < 0.0) { + position.setY(position.y() - 2 * topOverflow); + vel.setY(-vel.y()); + } else if (bottomOverflow > 0.0) { + position.setY(position.y() - 2 * bottomOverflow); + vel.setY(-vel.y()); + } +} + +QRectF Bubble::rect() +{ + return QRectF(position.x() - radius, position.y() - radius, + 2 * radius, 2 * radius); +} diff --git a/tests/manual/examples/opengl/qopenglwidget/bubble.h b/tests/manual/examples/opengl/qopenglwidget/bubble.h new file mode 100644 index 0000000000..47355ead41 --- /dev/null +++ b/tests/manual/examples/opengl/qopenglwidget/bubble.h @@ -0,0 +1,39 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#ifndef BUBBLE_H +#define BUBBLE_H + +#include <QBrush> +#include <QColor> +#include <QPointF> +#include <QRect> +#include <QRectF> + +QT_FORWARD_DECLARE_CLASS(QPainter) + +class Bubble +{ +public: + Bubble(const QPointF &position, qreal radius, const QPointF &velocity); + ~Bubble(); + + void drawBubble(QPainter *painter); + void updateBrush(); + void move(const QRect &bbox); + void updateCache(); + QRectF rect(); + +private: + QColor randomColor(); + + QBrush brush; + QPointF position; + QPointF vel; + qreal radius; + QColor innerColor; + QColor outerColor; + QImage *cache = nullptr; +}; + +#endif diff --git a/tests/manual/examples/opengl/qopenglwidget/glwidget.cpp b/tests/manual/examples/opengl/qopenglwidget/glwidget.cpp new file mode 100644 index 0000000000..e2a3ea4fc5 --- /dev/null +++ b/tests/manual/examples/opengl/qopenglwidget/glwidget.cpp @@ -0,0 +1,540 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include "glwidget.h" +#include <QPainter> +#include <QPaintEngine> +#include <QOpenGLShaderProgram> +#include <QOpenGLTexture> +#include <QRandomGenerator> +#include <QCoreApplication> +#include <qmath.h> + +#include "mainwindow.h" +#include "bubble.h" + +const int bubbleNum = 8; + +#ifndef GL_SRGB8_ALPHA8 +#define GL_SRGB8_ALPHA8 0x8C43 +#endif + +GLWidget::GLWidget(MainWindow *maybeMainWindow, const QColor &background) + : m_mainWindow(maybeMainWindow), + m_background(background) +{ + setMinimumSize(300, 250); + if (QCoreApplication::arguments().contains(QStringLiteral("--srgb"))) + setTextureFormat(GL_SRGB8_ALPHA8); +} + +GLWidget::~GLWidget() +{ + reset(); +} + +void GLWidget::reset() +{ + qDeleteAll(m_bubbles); + // Leave everything in a state suitable for a subsequent call to + // initialize(). This matters when coming from the context's + // aboutToBeDestroyed signal, would not matter when invoked from the + // destructor. + m_bubbles.clear(); + + // And now release all OpenGL resources. + makeCurrent(); + delete m_texture; + m_texture = nullptr; + delete m_program1; + m_program1 = nullptr; + delete m_program2; + m_program2 = nullptr; + delete m_vshader1; + m_vshader1 = nullptr; + delete m_fshader1; + m_fshader1 = nullptr; + delete m_vshader2; + m_vshader2 = nullptr; + delete m_fshader2; + m_fshader2 = nullptr; + m_vbo1.destroy(); + m_vbo2.destroy(); + doneCurrent(); + + // We are done with the current QOpenGLContext, forget it. If there is a + // subsequent initialize(), that will then connect to the new context. + QObject::disconnect(m_contextWatchConnection); +} + +void GLWidget::setScaling(int scale) +{ + if (scale > 30) + m_fScale = 1 + qreal(scale - 30) / 30 * 0.25; + else if (scale < 30) + m_fScale = 1 - (qreal(30 - scale) / 30 * 0.25); + else + m_fScale = 1; +} + +void GLWidget::setLogo() +{ + m_qtLogo = true; +} + +void GLWidget::setTexture() +{ + m_qtLogo = false; +} + +void GLWidget::setShowBubbles(bool bubbles) +{ + m_showBubbles = bubbles; +} + +void GLWidget::paintQtLogo() +{ + m_program1->enableAttributeArray(m_vertexAttr1); + m_program1->enableAttributeArray(m_normalAttr1); + + m_vbo1.bind(); + // The data in the buffer is placed like this: + // vertex1.x, vertex1.y, vertex1.z, normal1.x, normal1.y, normal1.z, vertex2.x, ... + m_program1->setAttributeBuffer(m_vertexAttr1, GL_FLOAT, 0, 3, 6 * sizeof(GLfloat)); + m_program1->setAttributeBuffer(m_normalAttr1, GL_FLOAT, 3 * sizeof(GLfloat), 3, 6 * sizeof(GLfloat)); + m_vbo1.release(); + + glDrawArrays(GL_TRIANGLES, 0, m_vertices.size()); + + m_program1->disableAttributeArray(m_normalAttr1); + m_program1->disableAttributeArray(m_vertexAttr1); +} + +void GLWidget::paintTexturedCube() +{ + m_texture->bind(); + + if (!m_vbo2.isCreated()) { + static GLfloat afVertices[] = { + -0.5, 0.5, 0.5, 0.5,-0.5,0.5,-0.5,-0.5,0.5, + 0.5, -0.5, 0.5, -0.5,0.5,0.5,0.5,0.5,0.5, + -0.5, -0.5, -0.5, 0.5,-0.5,-0.5,-0.5,0.5,-0.5, + 0.5, 0.5, -0.5, -0.5,0.5,-0.5,0.5,-0.5,-0.5, + + 0.5, -0.5, -0.5, 0.5,-0.5,0.5,0.5,0.5,-0.5, + 0.5, 0.5, 0.5, 0.5,0.5,-0.5,0.5,-0.5,0.5, + -0.5, 0.5, -0.5, -0.5,-0.5,0.5,-0.5,-0.5,-0.5, + -0.5, -0.5, 0.5, -0.5,0.5,-0.5,-0.5,0.5,0.5, + + 0.5, 0.5, -0.5, -0.5, 0.5, 0.5, -0.5, 0.5, -0.5, + -0.5, 0.5, 0.5, 0.5, 0.5, -0.5, 0.5, 0.5, 0.5, + -0.5, -0.5, -0.5, -0.5, -0.5, 0.5, 0.5, -0.5, -0.5, + 0.5, -0.5, 0.5, 0.5, -0.5, -0.5, -0.5, -0.5, 0.5 + }; + + static GLfloat afTexCoord[] = { + 0.0f,0.0f, 1.0f,1.0f, 1.0f,0.0f, + 1.0f,1.0f, 0.0f,0.0f, 0.0f,1.0f, + 1.0f,1.0f, 1.0f,0.0f, 0.0f,1.0f, + 0.0f,0.0f, 0.0f,1.0f, 1.0f,0.0f, + + 1.0f,1.0f, 1.0f,0.0f, 0.0f,1.0f, + 0.0f,0.0f, 0.0f,1.0f, 1.0f,0.0f, + 0.0f,0.0f, 1.0f,1.0f, 1.0f,0.0f, + 1.0f,1.0f, 0.0f,0.0f, 0.0f,1.0f, + + 0.0f,1.0f, 1.0f,0.0f, 1.0f,1.0f, + 1.0f,0.0f, 0.0f,1.0f, 0.0f,0.0f, + 1.0f,0.0f, 1.0f,1.0f, 0.0f,0.0f, + 0.0f,1.0f, 0.0f,0.0f, 1.0f,1.0f + }; + + GLfloat afNormals[] = { + + 0,0,-1, 0,0,-1, 0,0,-1, + 0,0,-1, 0,0,-1, 0,0,-1, + 0,0,1, 0,0,1, 0,0,1, + 0,0,1, 0,0,1, 0,0,1, + + -1,0,0, -1,0,0, -1,0,0, + -1,0,0, -1,0,0, -1,0,0, + 1,0,0, 1,0,0, 1,0,0, + 1,0,0, 1,0,0, 1,0,0, + + 0,-1,0, 0,-1,0, 0,-1,0, + 0,-1,0, 0,-1,0, 0,-1,0, + 0,1,0, 0,1,0, 0,1,0, + 0,1,0, 0,1,0, 0,1,0 + }; + + m_vbo2.create(); + m_vbo2.bind(); + m_vbo2.allocate(36 * 8 * sizeof(GLfloat)); + m_vbo2.write(0, afVertices, sizeof(afVertices)); + m_vbo2.write(sizeof(afVertices), afTexCoord, sizeof(afTexCoord)); + m_vbo2.write(sizeof(afVertices) + sizeof(afTexCoord), afNormals, sizeof(afNormals)); + m_vbo2.release(); + } + + m_program2->setUniformValue(m_textureUniform2, 0); // use texture unit 0 + + m_program2->enableAttributeArray(m_vertexAttr2); + m_program2->enableAttributeArray(m_normalAttr2); + m_program2->enableAttributeArray(m_texCoordAttr2); + + m_vbo2.bind(); + // In the buffer we first have 36 vertices (3 floats for each), then 36 texture + // coordinates (2 floats for each), then 36 normals (3 floats for each). + m_program2->setAttributeBuffer(m_vertexAttr2, GL_FLOAT, 0, 3); + m_program2->setAttributeBuffer(m_texCoordAttr2, GL_FLOAT, 36 * 3 * sizeof(GLfloat), 2); + m_program2->setAttributeBuffer(m_normalAttr2, GL_FLOAT, 36 * 5 * sizeof(GLfloat), 3); + m_vbo2.release(); + + glDrawArrays(GL_TRIANGLES, 0, 36); + + m_program2->disableAttributeArray(m_vertexAttr2); + m_program2->disableAttributeArray(m_normalAttr2); + m_program2->disableAttributeArray(m_texCoordAttr2); +} + +void GLWidget::initializeGL() +{ + initializeOpenGLFunctions(); + + m_texture = new QOpenGLTexture(QImage(":/qt.png")); + + m_vshader1 = new QOpenGLShader(QOpenGLShader::Vertex); + const char *vsrc1 = + "attribute highp vec4 vertex;\n" + "attribute mediump vec3 normal;\n" + "uniform mediump mat4 matrix;\n" + "varying mediump vec4 color;\n" + "void main(void)\n" + "{\n" + " vec3 toLight = normalize(vec3(0.0, 0.3, 1.0));\n" + " float angle = max(dot(normal, toLight), 0.0);\n" + " vec3 col = vec3(0.40, 1.0, 0.0);\n" + " color = vec4(col * 0.2 + col * 0.8 * angle, 1.0);\n" + " color = clamp(color, 0.0, 1.0);\n" + " gl_Position = matrix * vertex;\n" + "}\n"; + m_vshader1->compileSourceCode(vsrc1); + + m_fshader1 = new QOpenGLShader(QOpenGLShader::Fragment); + const char *fsrc1 = + "varying mediump vec4 color;\n" + "void main(void)\n" + "{\n" + " gl_FragColor = color;\n" + "}\n"; + m_fshader1->compileSourceCode(fsrc1); + + m_program1 = new QOpenGLShaderProgram; + m_program1->addShader(m_vshader1); + m_program1->addShader(m_fshader1); + m_program1->link(); + + m_vertexAttr1 = m_program1->attributeLocation("vertex"); + m_normalAttr1 = m_program1->attributeLocation("normal"); + m_matrixUniform1 = m_program1->uniformLocation("matrix"); + + m_vshader2 = new QOpenGLShader(QOpenGLShader::Vertex); + const char *vsrc2 = + "attribute highp vec4 vertex;\n" + "attribute highp vec4 texCoord;\n" + "attribute mediump vec3 normal;\n" + "uniform mediump mat4 matrix;\n" + "varying highp vec4 texc;\n" + "varying mediump float angle;\n" + "void main(void)\n" + "{\n" + " vec3 toLight = normalize(vec3(0.0, 0.3, 1.0));\n" + " angle = max(dot(normal, toLight), 0.0);\n" + " gl_Position = matrix * vertex;\n" + " texc = texCoord;\n" + "}\n"; + m_vshader2->compileSourceCode(vsrc2); + + m_fshader2 = new QOpenGLShader(QOpenGLShader::Fragment); + const char *fsrc2 = + "varying highp vec4 texc;\n" + "uniform sampler2D tex;\n" + "varying mediump float angle;\n" + "void main(void)\n" + "{\n" + " highp vec3 color = texture2D(tex, texc.st).rgb;\n" + " color = color * 0.2 + color * 0.8 * angle;\n" + " gl_FragColor = vec4(clamp(color, 0.0, 1.0), 1.0);\n" + "}\n"; + m_fshader2->compileSourceCode(fsrc2); + + m_program2 = new QOpenGLShaderProgram; + m_program2->addShader(m_vshader2); + m_program2->addShader(m_fshader2); + m_program2->link(); + + m_vertexAttr2 = m_program2->attributeLocation("vertex"); + m_normalAttr2 = m_program2->attributeLocation("normal"); + m_texCoordAttr2 = m_program2->attributeLocation("texCoord"); + m_matrixUniform2 = m_program2->uniformLocation("matrix"); + m_textureUniform2 = m_program2->uniformLocation("tex"); + + m_fAngle = 0; + m_fScale = 1; + + createGeometry(); + + // Use a vertex buffer object. Client-side pointers are old-school and should be avoided. + m_vbo1.create(); + m_vbo1.bind(); + // For the cube all the data belonging to the texture coordinates and + // normals is placed separately, after the vertices. Here, for the Qt logo, + // let's do something different and potentially more efficient: create a + // properly interleaved data set. + const int vertexCount = m_vertices.count(); + QList<GLfloat> buf; + buf.resize(vertexCount * 3 * 2); + GLfloat *p = buf.data(); + for (int i = 0; i < vertexCount; ++i) { + *p++ = m_vertices[i].x(); + *p++ = m_vertices[i].y(); + *p++ = m_vertices[i].z(); + *p++ = m_normals[i].x(); + *p++ = m_normals[i].y(); + *p++ = m_normals[i].z(); + } + m_vbo1.allocate(buf.constData(), buf.count() * sizeof(GLfloat)); + m_vbo1.release(); + + createBubbles(bubbleNum - m_bubbles.count()); + + // A well-behaved QOpenGLWidget releases OpenGL resources not only upon + // destruction, but also when the associated OpenGL context disappears. If + // the widget continues to exist, the context's destruction will be + // followed by a call to initialize(). This is not strictly mandatory in + // widgets that never change their parents. + m_contextWatchConnection = QObject::connect(context(), &QOpenGLContext::aboutToBeDestroyed, context(), [this] { reset(); }); +} + +void GLWidget::paintGL() +{ + createBubbles(bubbleNum - m_bubbles.count()); + + QPainter painter; + painter.begin(this); + + painter.beginNativePainting(); + + glClearColor(m_background.redF(), m_background.greenF(), m_background.blueF(), m_transparent ? 0.0f : 1.0f); + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + + glFrontFace(GL_CW); + glCullFace(GL_FRONT); + glEnable(GL_CULL_FACE); + glEnable(GL_DEPTH_TEST); + + QMatrix4x4 modelview; + modelview.rotate(m_fAngle, 0.0f, 1.0f, 0.0f); + modelview.rotate(m_fAngle, 1.0f, 0.0f, 0.0f); + modelview.rotate(m_fAngle, 0.0f, 0.0f, 1.0f); + modelview.scale(m_fScale); + modelview.translate(0.0f, -0.2f, 0.0f); + + if (m_qtLogo) { + m_program1->bind(); + m_program1->setUniformValue(m_matrixUniform1, modelview); + paintQtLogo(); + m_program1->release(); + } else { + m_program2->bind(); + m_program2->setUniformValue(m_matrixUniform2, modelview); + paintTexturedCube(); + m_program2->release(); + } + + glDisable(GL_DEPTH_TEST); + glDisable(GL_CULL_FACE); + + painter.endNativePainting(); + + if (m_showBubbles) { + for (Bubble *bubble : std::as_const(m_bubbles)) + bubble->drawBubble(&painter); + } + + if (const int elapsed = m_time.elapsed()) { + QString framesPerSecond; + framesPerSecond.setNum(m_frames /(elapsed / 1000.0), 'f', 2); + painter.setPen(m_transparent ? Qt::black : Qt::white); + painter.drawText(20, 40, framesPerSecond + " paintGL calls / s"); + } + + painter.end(); + + for (Bubble *bubble : std::as_const(m_bubbles)) + bubble->move(rect()); + + if (!(m_frames % 100)) { + m_time.start(); + m_frames = 0; + } + m_fAngle += 1.0f; + ++m_frames; + + // When requested, follow the ideal way to animate: Rely on + // blocking swap and just schedule updates continuously. + if (!m_mainWindow || !m_mainWindow->timerEnabled()) + update(); +} + +void GLWidget::createBubbles(int number) +{ + for (int i = 0; i < number; ++i) { + QPointF position(width()*(0.1 + QRandomGenerator::global()->bounded(0.8)), + height()*(0.1 + QRandomGenerator::global()->bounded(0.8))); + qreal radius = qMin(width(), height())*(0.0175 + QRandomGenerator::global()->bounded(0.0875)); + QPointF velocity(width()*0.0175*(-0.5 + QRandomGenerator::global()->bounded(1.0)), + height()*0.0175*(-0.5 + QRandomGenerator::global()->bounded(1.0))); + + m_bubbles.append(new Bubble(position, radius, velocity)); + } +} + +void GLWidget::createGeometry() +{ + m_vertices.clear(); + m_normals.clear(); + + qreal x1 = +0.06f; + qreal y1 = -0.14f; + qreal x2 = +0.14f; + qreal y2 = -0.06f; + qreal x3 = +0.08f; + qreal y3 = +0.00f; + qreal x4 = +0.30f; + qreal y4 = +0.22f; + + quad(x1, y1, x2, y2, y2, x2, y1, x1); + quad(x3, y3, x4, y4, y4, x4, y3, x3); + + extrude(x1, y1, x2, y2); + extrude(x2, y2, y2, x2); + extrude(y2, x2, y1, x1); + extrude(y1, x1, x1, y1); + extrude(x3, y3, x4, y4); + extrude(x4, y4, y4, x4); + extrude(y4, x4, y3, x3); + + const int NumSectors = 100; + const qreal sectorAngle = 2 * qreal(M_PI) / NumSectors; + + for (int i = 0; i < NumSectors; ++i) { + qreal angle = i * sectorAngle; + qreal x5 = 0.30 * sin(angle); + qreal y5 = 0.30 * cos(angle); + qreal x6 = 0.20 * sin(angle); + qreal y6 = 0.20 * cos(angle); + + angle += sectorAngle; + qreal x7 = 0.20 * sin(angle); + qreal y7 = 0.20 * cos(angle); + qreal x8 = 0.30 * sin(angle); + qreal y8 = 0.30 * cos(angle); + + quad(x5, y5, x6, y6, x7, y7, x8, y8); + + extrude(x6, y6, x7, y7); + extrude(x8, y8, x5, y5); + } + + for (int i = 0;i < m_vertices.size();i++) + m_vertices[i] *= 2.0f; +} + +void GLWidget::quad(qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, qreal x4, qreal y4) +{ + m_vertices << QVector3D(x1, y1, -0.05f); + m_vertices << QVector3D(x2, y2, -0.05f); + m_vertices << QVector3D(x4, y4, -0.05f); + + m_vertices << QVector3D(x3, y3, -0.05f); + m_vertices << QVector3D(x4, y4, -0.05f); + m_vertices << QVector3D(x2, y2, -0.05f); + + QVector3D n = QVector3D::normal + (QVector3D(x2 - x1, y2 - y1, 0.0f), QVector3D(x4 - x1, y4 - y1, 0.0f)); + + m_normals << n; + m_normals << n; + m_normals << n; + + m_normals << n; + m_normals << n; + m_normals << n; + + m_vertices << QVector3D(x4, y4, 0.05f); + m_vertices << QVector3D(x2, y2, 0.05f); + m_vertices << QVector3D(x1, y1, 0.05f); + + m_vertices << QVector3D(x2, y2, 0.05f); + m_vertices << QVector3D(x4, y4, 0.05f); + m_vertices << QVector3D(x3, y3, 0.05f); + + n = QVector3D::normal + (QVector3D(x2 - x4, y2 - y4, 0.0f), QVector3D(x1 - x4, y1 - y4, 0.0f)); + + m_normals << n; + m_normals << n; + m_normals << n; + + m_normals << n; + m_normals << n; + m_normals << n; +} + +void GLWidget::extrude(qreal x1, qreal y1, qreal x2, qreal y2) +{ + m_vertices << QVector3D(x1, y1, +0.05f); + m_vertices << QVector3D(x2, y2, +0.05f); + m_vertices << QVector3D(x1, y1, -0.05f); + + m_vertices << QVector3D(x2, y2, -0.05f); + m_vertices << QVector3D(x1, y1, -0.05f); + m_vertices << QVector3D(x2, y2, +0.05f); + + QVector3D n = QVector3D::normal + (QVector3D(x2 - x1, y2 - y1, 0.0f), QVector3D(0.0f, 0.0f, -0.1f)); + + m_normals << n; + m_normals << n; + m_normals << n; + + m_normals << n; + m_normals << n; + m_normals << n; +} + +void GLWidget::setTransparent(bool transparent) +{ + setAttribute(Qt::WA_AlwaysStackOnTop, transparent); + m_transparent = transparent; + // Call update() on the top-level window after toggling AlwayStackOnTop to make sure + // the entire backingstore is updated accordingly. + window()->update(); +} + +void GLWidget::resizeGL(int, int) +{ + if (m_mainWindow) { + if (!m_btn) { + m_btn = new QPushButton("\nAdd widget\n", this); + connect(m_btn, &QPushButton::clicked, this, [this] { m_mainWindow->addNew(); }); + } + m_btn->move(20, 80); + if (!m_btn2) { + m_btn2 = new QPushButton("\nI prefer tabbed widgets\n", this); + connect(m_btn2, &QPushButton::clicked, this, [this] { m_mainWindow->showNewWindow(); }); + } + m_btn2->move(20, 160); + } +} diff --git a/tests/manual/examples/opengl/qopenglwidget/glwidget.h b/tests/manual/examples/opengl/qopenglwidget/glwidget.h new file mode 100644 index 0000000000..de9d11b94c --- /dev/null +++ b/tests/manual/examples/opengl/qopenglwidget/glwidget.h @@ -0,0 +1,85 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#ifndef GLWIDGET_H +#define GLWIDGET_H + +#include <QOpenGLWidget> +#include <QOpenGLFunctions> +#include <QOpenGLBuffer> +#include <QVector3D> +#include <QMatrix4x4> +#include <QElapsedTimer> +#include <QList> +#include <QPushButton> + +class Bubble; +class MainWindow; + +QT_FORWARD_DECLARE_CLASS(QOpenGLTexture) +QT_FORWARD_DECLARE_CLASS(QOpenGLShader) +QT_FORWARD_DECLARE_CLASS(QOpenGLShaderProgram) + +class GLWidget : public QOpenGLWidget, protected QOpenGLFunctions +{ + Q_OBJECT +public: + GLWidget(MainWindow *maybeMainWindow, const QColor &background); + ~GLWidget(); + +public slots: + void setScaling(int scale); + void setLogo(); + void setTexture(); + void setShowBubbles(bool); + void setTransparent(bool transparent); + +protected: + void resizeGL(int w, int h) override; + void paintGL() override; + void initializeGL() override; + +private: + void paintTexturedCube(); + void paintQtLogo(); + void createGeometry(); + void createBubbles(int number); + void quad(qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, qreal x4, qreal y4); + void extrude(qreal x1, qreal y1, qreal x2, qreal y2); + void reset(); + + MainWindow *m_mainWindow; + qreal m_fAngle = 0; + qreal m_fScale = 1; + bool m_showBubbles = true; + QList<QVector3D> m_vertices; + QList<QVector3D> m_normals; + bool m_qtLogo = true; + QList<Bubble *> m_bubbles; + int m_frames = 0; + QElapsedTimer m_time; + QOpenGLShader *m_vshader1 = nullptr; + QOpenGLShader *m_fshader1 = nullptr; + QOpenGLShader *m_vshader2 = nullptr; + QOpenGLShader *m_fshader2 = nullptr; + QOpenGLShaderProgram *m_program1 = nullptr; + QOpenGLShaderProgram *m_program2 = nullptr; + QOpenGLTexture *m_texture = nullptr; + QOpenGLBuffer m_vbo1; + QOpenGLBuffer m_vbo2; + int m_vertexAttr1 = 0; + int m_normalAttr1 = 0; + int m_matrixUniform1 = 0; + int m_vertexAttr2 = 0; + int m_normalAttr2 = 0; + int m_texCoordAttr2 = 0; + int m_matrixUniform2 = 0; + int m_textureUniform2 = 0; + bool m_transparent = false; + QPushButton *m_btn = nullptr; + QPushButton *m_btn2 = nullptr; + QColor m_background; + QMetaObject::Connection m_contextWatchConnection; +}; + +#endif diff --git a/tests/manual/examples/opengl/qopenglwidget/main.cpp b/tests/manual/examples/opengl/qopenglwidget/main.cpp new file mode 100644 index 0000000000..1614649a5a --- /dev/null +++ b/tests/manual/examples/opengl/qopenglwidget/main.cpp @@ -0,0 +1,42 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include <QApplication> +#include <QMainWindow> +#include <QColorSpace> +#include <QSurfaceFormat> +#include <QCommandLineParser> +#include <QCommandLineOption> +#include "mainwindow.h" + +int main( int argc, char ** argv ) +{ + QApplication a( argc, argv ); + + QCoreApplication::setApplicationName("Qt QOpenGLWidget Example"); + QCoreApplication::setOrganizationName("QtProject"); + QCoreApplication::setApplicationVersion(QT_VERSION_STR); + QCommandLineParser parser; + parser.setApplicationDescription(QCoreApplication::applicationName()); + parser.addHelpOption(); + parser.addVersionOption(); + QCommandLineOption multipleSampleOption("multisample", "Multisampling"); + parser.addOption(multipleSampleOption); + QCommandLineOption srgbOption("srgb", "Use sRGB Color Space"); + parser.addOption(srgbOption); + parser.process(a); + + QSurfaceFormat format; + format.setDepthBufferSize(24); + format.setStencilBufferSize(8); + if (parser.isSet(srgbOption)) + format.setColorSpace(QColorSpace::SRgb); + if (parser.isSet(multipleSampleOption)) + format.setSamples(4); + QSurfaceFormat::setDefaultFormat(format); + + MainWindow mw; + mw.resize(1280, 720); + mw.show(); + return a.exec(); +} diff --git a/tests/manual/examples/opengl/qopenglwidget/mainwindow.cpp b/tests/manual/examples/opengl/qopenglwidget/mainwindow.cpp new file mode 100644 index 0000000000..c383a692d5 --- /dev/null +++ b/tests/manual/examples/opengl/qopenglwidget/mainwindow.cpp @@ -0,0 +1,188 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include "mainwindow.h" + +#include <QApplication> +#include <QMenuBar> +#include <QGroupBox> +#include <QSlider> +#include <QLabel> +#include <QCheckBox> +#include <QRandomGenerator> +#include <QSpinBox> +#include <QScrollArea> +#include <QTabWidget> +#include <QTabBar> +#include <QToolButton> + +#include "glwidget.h" + +MainWindow::MainWindow() + : m_nextX(1), m_nextY(1) +{ + GLWidget *glwidget = new GLWidget(this, qRgb(20, 20, 50)); + m_glWidgets << glwidget; + QLabel *label = new QLabel(this); + m_timer = new QTimer(this); + QSlider *slider = new QSlider(this); + slider->setOrientation(Qt::Horizontal); + + QLabel *updateLabel = new QLabel("Update interval"); + QSpinBox *updateInterval = new QSpinBox(this); + updateInterval->setSuffix(" ms"); + updateInterval->setValue(10); + updateInterval->setToolTip("Interval for the timer that calls update().\n" + "Note that on most systems the swap will block to wait for vsync\n" + "and therefore an interval < 16 ms will likely lead to a 60 FPS update rate."); + QGroupBox *updateGroupBox = new QGroupBox(this); + QCheckBox *timerBased = new QCheckBox("Use timer", this); + timerBased->setChecked(false); + timerBased->setToolTip("Toggles using a timer to trigger update().\n" + "When not set, each paintGL() schedules the next update immediately,\n" + "expecting the blocking swap to throttle the thread.\n" + "This shows how unnecessary the timer is in most cases."); + QCheckBox *transparent = new QCheckBox("Transparent background", this); + transparent->setToolTip("Toggles Qt::WA_AlwaysStackOnTop and transparent clear color for glClear().\n" + "Note how the button on top stacks incorrectly when enabling this."); + QHBoxLayout *updateLayout = new QHBoxLayout; + updateLayout->addWidget(updateLabel); + updateLayout->addWidget(updateInterval); + updateLayout->addWidget(timerBased); + updateLayout->addWidget(transparent); + updateGroupBox->setLayout(updateLayout); + + slider->setRange(0, 50); + slider->setSliderPosition(30); + m_timer->setInterval(10); + label->setText("A scrollable QOpenGLWidget"); + label->setAlignment(Qt::AlignHCenter); + + QGroupBox * groupBox = new QGroupBox(this); + setCentralWidget(groupBox); + groupBox->setTitle("QOpenGLWidget Example"); + + m_layout = new QGridLayout(groupBox); + + QScrollArea *scrollArea = new QScrollArea; + scrollArea->setWidget(glwidget); + + m_layout->addWidget(scrollArea,1,0,8,1); + m_layout->addWidget(label,9,0,1,1); + m_layout->addWidget(updateGroupBox, 10, 0, 1, 1); + m_layout->addWidget(slider, 11,0,1,1); + + groupBox->setLayout(m_layout); + + + QMenu *fileMenu = menuBar()->addMenu("&File"); + fileMenu->addAction("E&xit", this, &QWidget::close); + QMenu *showMenu = menuBar()->addMenu("&Show"); + showMenu->addAction("Show 3D Logo", glwidget, &GLWidget::setLogo); + showMenu->addAction("Show 2D Texture", glwidget, &GLWidget::setTexture); + QAction *showBubbles = showMenu->addAction("Show bubbles", glwidget, &GLWidget::setShowBubbles); + showBubbles->setCheckable(true); + showBubbles->setChecked(true); + showMenu->addAction("Open tab window", this, &MainWindow::showNewWindow); + QMenu *helpMenu = menuBar()->addMenu("&Help"); + helpMenu->addAction("About Qt", qApp, &QApplication::aboutQt); + + connect(m_timer, &QTimer::timeout, glwidget, QOverload<>::of(&QWidget::update)); + + connect(slider, &QAbstractSlider::valueChanged, glwidget, &GLWidget::setScaling); + connect(transparent, &QCheckBox::toggled, glwidget, &GLWidget::setTransparent); + connect(updateInterval, &QSpinBox::valueChanged, + this, &MainWindow::updateIntervalChanged); + connect(timerBased, &QCheckBox::toggled, this, &MainWindow::timerUsageChanged); + connect(timerBased, &QCheckBox::toggled, updateInterval, &QWidget::setEnabled); + + if (timerBased->isChecked()) + m_timer->start(); + else + updateInterval->setEnabled(false); +} + +void MainWindow::updateIntervalChanged(int value) +{ + m_timer->setInterval(value); + if (m_timer->isActive()) + m_timer->start(); +} + +void MainWindow::addNew() +{ + if (m_nextY == 4) + return; + GLWidget *w = new GLWidget(nullptr, qRgb(QRandomGenerator::global()->bounded(256), + QRandomGenerator::global()->bounded(256), + QRandomGenerator::global()->bounded(256))); + m_glWidgets << w; + connect(m_timer, &QTimer::timeout, w, QOverload<>::of(&QWidget::update)); + m_layout->addWidget(w, m_nextY, m_nextX, 1, 1); + if (m_nextX == 3) { + m_nextX = 1; + ++m_nextY; + } else { + ++m_nextX; + } +} + +void MainWindow::timerUsageChanged(bool enabled) +{ + if (enabled) { + m_timer->start(); + } else { + m_timer->stop(); + for (QOpenGLWidget *w : std::as_const(m_glWidgets)) + w->update(); + } +} + +void MainWindow::resizeEvent(QResizeEvent *) +{ + m_glWidgets[0]->setMinimumSize(size() + QSize(128, 128)); +} + +void MainWindow::showNewWindow() +{ + QTabWidget *tabs = new QTabWidget; + tabs->resize(800, 600); + + QToolButton *tb = new QToolButton; + tb->setText(QLatin1String("+")); + tabs->addTab(new QLabel(QLatin1String("Add OpenGL widgets with +")), QString()); + tabs->setTabEnabled(0, false); + tabs->tabBar()->setTabButton(0, QTabBar::RightSide, tb); + tabs->tabBar()->setTabsClosable(true); + QObject::connect(tabs->tabBar(), &QTabBar::tabCloseRequested, tabs, [tabs](int index) { + tabs->widget(index)->deleteLater(); + }); + + const QString msgToTopLevel = QLatin1String("Break out to top-level window"); + const QString msgFromTopLevel = QLatin1String("Move back under tab widget"); + + QObject::connect(tb, &QAbstractButton::clicked, tabs, [=] { + GLWidget *glwidget = new GLWidget(nullptr, Qt::blue); + glwidget->resize(tabs->size()); + glwidget->setWindowTitle(QString::asprintf("QOpenGLWidget %p", glwidget)); + + QPushButton *btn = new QPushButton(msgToTopLevel, glwidget); + connect(btn, &QPushButton::clicked, glwidget, [=] { + if (glwidget->parent()) { + glwidget->setAttribute(Qt::WA_DeleteOnClose, true); + glwidget->setParent(nullptr); + glwidget->show(); + btn->setText(msgFromTopLevel); + } else { + glwidget->setAttribute(Qt::WA_DeleteOnClose, false); + tabs->addTab(glwidget, glwidget->windowTitle()); + btn->setText(msgToTopLevel); + } + }); + + tabs->setCurrentIndex(tabs->addTab(glwidget, glwidget->windowTitle())); + }); + + tabs->setAttribute(Qt::WA_DeleteOnClose); + tabs->show(); +} diff --git a/tests/manual/examples/opengl/qopenglwidget/mainwindow.h b/tests/manual/examples/opengl/qopenglwidget/mainwindow.h new file mode 100644 index 0000000000..85f11ad764 --- /dev/null +++ b/tests/manual/examples/opengl/qopenglwidget/mainwindow.h @@ -0,0 +1,39 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#ifndef MAINWINDOW_H +#define MAINWINDOW_H + +#include <QMainWindow> +#include <QTimer> +#include <QGridLayout> + +QT_FORWARD_DECLARE_CLASS(QOpenGLWidget) + +class MainWindow : public QMainWindow +{ + Q_OBJECT + +public: + MainWindow(); + void addNew(); + bool timerEnabled() const { return m_timer->isActive(); } + + void resizeEvent(QResizeEvent *); + +public slots: + void showNewWindow(); + +private slots: + void updateIntervalChanged(int value); + void timerUsageChanged(bool enabled); + +private: + QTimer *m_timer; + QGridLayout *m_layout; + int m_nextX; + int m_nextY; + QList<QOpenGLWidget *> m_glWidgets; +}; + +#endif diff --git a/tests/manual/examples/opengl/qopenglwidget/qopenglwidget.pro b/tests/manual/examples/opengl/qopenglwidget/qopenglwidget.pro new file mode 100644 index 0000000000..7ac546d7ce --- /dev/null +++ b/tests/manual/examples/opengl/qopenglwidget/qopenglwidget.pro @@ -0,0 +1,15 @@ +QT += widgets opengl openglwidgets + +SOURCES += main.cpp \ + glwidget.cpp \ + mainwindow.cpp \ + bubble.cpp + +HEADERS += glwidget.h \ + mainwindow.h \ + bubble.h + +RESOURCES += texture.qrc + +target.path = $$[QT_INSTALL_EXAMPLES]/opengl/qopenglwidget +INSTALLS += target diff --git a/tests/manual/examples/opengl/qopenglwidget/qt.png b/tests/manual/examples/opengl/qopenglwidget/qt.png Binary files differnew file mode 100644 index 0000000000..4f68e162de --- /dev/null +++ b/tests/manual/examples/opengl/qopenglwidget/qt.png diff --git a/tests/manual/examples/opengl/qopenglwidget/texture.qrc b/tests/manual/examples/opengl/qopenglwidget/texture.qrc new file mode 100644 index 0000000000..ff1d0e535f --- /dev/null +++ b/tests/manual/examples/opengl/qopenglwidget/texture.qrc @@ -0,0 +1,5 @@ +<!DOCTYPE RCC><RCC version="1.0"> +<qresource> + <file>qt.png</file> +</qresource> +</RCC> diff --git a/tests/manual/examples/opengl/qopenglwindow/CMakeLists.txt b/tests/manual/examples/opengl/qopenglwindow/CMakeLists.txt new file mode 100644 index 0000000000..be3cb45152 --- /dev/null +++ b/tests/manual/examples/opengl/qopenglwindow/CMakeLists.txt @@ -0,0 +1,49 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +cmake_minimum_required(VERSION 3.16) +project(qopenglwindow LANGUAGES CXX) + +if(NOT DEFINED INSTALL_EXAMPLESDIR) + set(INSTALL_EXAMPLESDIR "examples") +endif() + +set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/opengl/qopenglwindow") + +find_package(Qt6 REQUIRED COMPONENTS Core Gui OpenGL) + +qt_standard_project_setup() + +qt_add_executable(qopenglwindow + background_renderer.cpp background_renderer.h + main.cpp +) + +set_target_properties(qopenglwindow PROPERTIES + WIN32_EXECUTABLE TRUE + MACOSX_BUNDLE TRUE +) + +target_link_libraries(qopenglwindow PRIVATE + Qt6::Core + Qt6::Gui + Qt6::OpenGL +) + +# Resources: +set(shaders_resource_files + "background.frag" +) + +qt_add_resources(qopenglwindow "shaders" + PREFIX + "/" + FILES + ${shaders_resource_files} +) + +install(TARGETS qopenglwindow + RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}" + BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}" + LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}" +) diff --git a/tests/manual/examples/opengl/qopenglwindow/background.frag b/tests/manual/examples/opengl/qopenglwindow/background.frag new file mode 100644 index 0000000000..4af85aae8e --- /dev/null +++ b/tests/manual/examples/opengl/qopenglwindow/background.frag @@ -0,0 +1,30 @@ +#define M_PI 3.14159265358979323846 +#define SPEED 10000.0 + +uniform int currentTime; +uniform highp vec2 windowSize; + +highp float noise(highp vec2 co) +{ + return 0.5 * fract(sin(dot(co.xy, vec2(12.9898,78.233))) * 43758.5453); +} + +highp float curvSpeed() +{ + return (mod(float(currentTime), SPEED) / SPEED) * (2.0 * M_PI); +} + +highp float curv(int curvCount) +{ + highp float curv_y = 0.1 *(cos((gl_FragCoord.x / windowSize.x) * (float(curvCount * 2) * M_PI) - curvSpeed())) + 0.5; + highp float frag_y = gl_FragCoord.y / windowSize.y; + return 1.0 - abs(curv_y - frag_y); +} + +void main() +{ + highp float coordNoise = noise(gl_FragCoord.xy); + highp float proximity = smoothstep(0.85, 1.0, (curv(6) + 1.0) * (coordNoise )); + highp vec3 color = vec3(coordNoise) * proximity; + gl_FragColor = vec4(color, 1.0); +} diff --git a/tests/manual/examples/opengl/qopenglwindow/background_renderer.cpp b/tests/manual/examples/opengl/qopenglwindow/background_renderer.cpp new file mode 100644 index 0000000000..5939894dfe --- /dev/null +++ b/tests/manual/examples/opengl/qopenglwindow/background_renderer.cpp @@ -0,0 +1,167 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include "background_renderer.h" + +#include <qmath.h> +#include <QFileInfo> +#include <QTime> + +#include <QOpenGLShaderProgram> +#include <QOpenGLContext> +#include <QOpenGLFunctions> + +#include <math.h> + +static const char vertex_shader[] = + "attribute highp vec3 vertexCoord;" + "void main() {" + " gl_Position = vec4(vertexCoord,1.0);" + "}"; + +static const char fragment_shader[] = + "void main() {" + " gl_FragColor = vec4(0.0,1.0,0.0,1.0);" + "}"; + +static const float vertices[] = { -1, -1, 0, + -1, 1, 0, + 1, -1, 0, + 1, 1, 0 }; + +FragmentToy::FragmentToy(const QString &fragmentSource, QObject *parent) + : QObject(parent) + , m_recompile_shaders(true) +{ + if (QFile::exists(fragmentSource)) { + QFileInfo info(fragmentSource); + m_fragment_file_last_modified = info.lastModified(); + m_fragment_file = fragmentSource; +#if QT_CONFIG(filesystemwatcher) + m_watcher.addPath(info.canonicalPath()); + QObject::connect(&m_watcher, &QFileSystemWatcher::directoryChanged, this, &FragmentToy::fileChanged); +#endif + } +} + +FragmentToy::~FragmentToy() + = default; + +void FragmentToy::draw(const QSize &windowSize) +{ + if (!m_program) + initializeOpenGLFunctions(); + + glDisable(GL_STENCIL_TEST); + glDisable(GL_DEPTH_TEST); + + glClearColor(0, 0, 0, 1); + glClear(GL_COLOR_BUFFER_BIT); + if (!m_vao.isCreated()) + m_vao.create(); + + QOpenGLVertexArrayObject::Binder binder(&m_vao); + + if (!m_vertex_buffer.isCreated()) { + m_vertex_buffer.create(); + m_vertex_buffer.bind(); + m_vertex_buffer.allocate(vertices, sizeof(vertices)); + m_vertex_buffer.release(); + } + + if (!m_program) { + m_program.reset(new QOpenGLShaderProgram); + m_program->create(); + m_vertex_shader.reset(new QOpenGLShader(QOpenGLShader::Vertex)); + if (!m_vertex_shader->compileSourceCode(vertex_shader)) { + qWarning() << "Failed to compile the vertex shader:" << m_vertex_shader->log(); + } + if (!m_program->addShader(m_vertex_shader.get())) { + qWarning() << "Failed to add vertex shader to program:" << m_program->log(); + } + } + + if (!m_fragment_shader && m_recompile_shaders) { + QByteArray data; + if (m_fragment_file.size()) { + QFile file(m_fragment_file); + if (file.open(QIODevice::ReadOnly)) { + data = file.readAll(); + } else { + qWarning() << "Failed to load input file, falling back to default"; + data = QByteArray::fromRawData(fragment_shader, sizeof(fragment_shader)); + } + } else { + QFile qrcFile(":/background.frag"); + if (qrcFile.open(QIODevice::ReadOnly)) + data = qrcFile.readAll(); + else + data = QByteArray::fromRawData(fragment_shader, sizeof(fragment_shader)); + } + if (data.size()) { + m_fragment_shader.reset(new QOpenGLShader(QOpenGLShader::Fragment)); + if (!m_fragment_shader->compileSourceCode(data)) { + qWarning() << "Failed to compile fragment shader:" << m_fragment_shader->log(); + m_fragment_shader.reset(nullptr); + } + } else { + qWarning() << "Unknown error, no fragment shader"; + } + + if (m_fragment_shader) { + if (!m_program->addShader(m_fragment_shader.get())) { + qWarning() << "Failed to add fragment shader to program:" << m_program->log(); + } + } + } + + if (m_recompile_shaders) { + m_recompile_shaders = false; + + if (m_program->link()) { + m_vertex_coord_pos = m_program->attributeLocation("vertexCoord"); + } else { + qWarning() << "Failed to link shader program" << m_program->log(); + } + + } + + if (!m_program->isLinked()) + return; + + m_program->bind(); + + m_vertex_buffer.bind(); + m_program->setAttributeBuffer("vertexCoord", GL_FLOAT, 0, 3, 0); + m_program->enableAttributeArray("vertexCoord"); + m_vertex_buffer.release(); + + m_program->setUniformValue("currentTime", (uint) QDateTime::currentMSecsSinceEpoch()); + m_program->setUniformValue("windowSize", windowSize); + + QOpenGLContext::currentContext()->functions()->glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); + + m_program->release(); +} + +void FragmentToy::fileChanged(const QString &path) +{ + Q_UNUSED(path); + if (QFile::exists(m_fragment_file)) { + QFileInfo fragment_source(m_fragment_file); + if (fragment_source.lastModified() > m_fragment_file_last_modified) { + m_fragment_file_last_modified = fragment_source.lastModified(); + m_recompile_shaders = true; + if (m_program) { + m_program->removeShader(m_fragment_shader.get()); + m_fragment_shader.reset(nullptr); + } + } + } else { + m_recompile_shaders = true; + if (m_program) { + m_program->removeShader(m_fragment_shader.get()); + m_fragment_shader.reset(nullptr); + } + } +} diff --git a/tests/manual/examples/opengl/qopenglwindow/background_renderer.h b/tests/manual/examples/opengl/qopenglwindow/background_renderer.h new file mode 100644 index 0000000000..76c0bec6a8 --- /dev/null +++ b/tests/manual/examples/opengl/qopenglwindow/background_renderer.h @@ -0,0 +1,46 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#ifndef FRAGMENT_TOY_H +#define FRAGMENT_TOY_H + +#include <QObject> +#include <QFile> +#include <QDateTime> +#if QT_CONFIG(filesystemwatcher) +#include <QFileSystemWatcher> +#endif +#include <QOpenGLVertexArrayObject> +#include <QOpenGLBuffer> +#include <QOpenGLShaderProgram> +#include <QOpenGLFunctions> + +#include <memory> + +class FragmentToy : public QObject, protected QOpenGLFunctions +{ + Q_OBJECT +public: + explicit FragmentToy(const QString &fragmentSource, QObject *parent = nullptr); + ~FragmentToy(); + + void draw(const QSize &windowSize); + +private: + void fileChanged(const QString &path); + bool m_recompile_shaders; +#if QT_CONFIG(filesystemwatcher) + QFileSystemWatcher m_watcher; +#endif + QString m_fragment_file; + QDateTime m_fragment_file_last_modified; + + std::unique_ptr<QOpenGLShaderProgram> m_program; + std::unique_ptr<QOpenGLShader> m_vertex_shader; + std::unique_ptr<QOpenGLShader> m_fragment_shader; + QOpenGLVertexArrayObject m_vao; + QOpenGLBuffer m_vertex_buffer; + GLuint m_vertex_coord_pos; +}; + +#endif //FRAGMENT_TOY_H diff --git a/tests/manual/examples/opengl/qopenglwindow/main.cpp b/tests/manual/examples/opengl/qopenglwindow/main.cpp new file mode 100644 index 0000000000..44810a4ecf --- /dev/null +++ b/tests/manual/examples/opengl/qopenglwindow/main.cpp @@ -0,0 +1,154 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include <QOpenGLWindow> +#include <QScreen> +#include <QPainter> +#include <QPainterPath> +#include <QGuiApplication> +#include <QMatrix4x4> +#include <QStaticText> +#include <QKeyEvent> + +#include "background_renderer.h" + +static QPainterPath painterPathForTriangle() +{ + static const QPointF bottomLeft(-1.0, -1.0); + static const QPointF top(0.0, 1.0); + static const QPointF bottomRight(1.0, -1.0); + + QPainterPath path(bottomLeft); + path.lineTo(top); + path.lineTo(bottomRight); + path.closeSubpath(); + return path; +} + +class OpenGLWindow : public QOpenGLWindow +{ + Q_OBJECT + +public: + OpenGLWindow(); + +protected: + void paintGL() override; + void resizeGL(int w, int h) override; + void keyPressEvent(QKeyEvent *e) override; + +private: + void setAnimating(bool enabled); + + QMatrix4x4 m_window_normalised_matrix; + QMatrix4x4 m_window_painter_matrix; + QMatrix4x4 m_projection; + QMatrix4x4 m_view; + QMatrix4x4 m_model_triangle; + QMatrix4x4 m_model_text; + + FragmentToy m_fragment_toy; + QStaticText m_text_layout; + bool m_animate; +}; + +// Use NoPartialUpdate. This means that all the rendering goes directly to +// the window surface, no additional framebuffer object stands in the +// middle. This is fine since we will clear the entire framebuffer on each +// paint. Under the hood this means that the behavior is equivalent to the +// manual makeCurrent - perform OpenGL calls - swapBuffers loop that is +// typical in pure QWindow-based applications. +OpenGLWindow::OpenGLWindow() + : QOpenGLWindow(QOpenGLWindow::NoPartialUpdate) + , m_fragment_toy("./background.frag") + , m_text_layout("The triangle and this text is rendered with QPainter") + , m_animate(true) +{ + setGeometry(300, 300, 500, 500); + + m_view.lookAt(QVector3D(3,1,1), + QVector3D(0,0,0), + QVector3D(0,1,0)); + + setAnimating(m_animate); +} + +void OpenGLWindow::paintGL() +{ + m_fragment_toy.draw(size()); + + QPainter p(this); + p.setWorldTransform(m_window_normalised_matrix.toTransform()); + + QMatrix4x4 mvp = m_projection * m_view * m_model_triangle; + p.setTransform(mvp.toTransform(), true); + + p.fillPath(painterPathForTriangle(), QBrush(QGradient(QGradient::NightFade))); + + QTransform text_transform = (m_window_painter_matrix * m_view * m_model_text).toTransform(); + p.setTransform(text_transform, false); + p.setPen(QPen(Qt::black)); + m_text_layout.prepare(text_transform); + qreal x = - (m_text_layout.size().width() / 2); + qreal y = 0; + p.drawStaticText(x, y, m_text_layout); + + m_model_triangle.rotate(-1, 0, 1, 0); + m_model_text.rotate(1, 0, 1, 0); +} + +void OpenGLWindow::resizeGL(int w, int h) +{ + m_window_normalised_matrix.setToIdentity(); + m_window_normalised_matrix.translate(w / 2.0, h / 2.0); + m_window_normalised_matrix.scale(w / 2.0, -h / 2.0); + + m_window_painter_matrix.setToIdentity(); + m_window_painter_matrix.translate(w / 2.0, h / 2.0); + + m_text_layout.setTextWidth(std::max(w * 0.2, 80.0)); + + m_projection.setToIdentity(); + m_projection.perspective(45.f, qreal(w) / qreal(h), 0.1f, 100.f); +} + +void OpenGLWindow::keyPressEvent(QKeyEvent *e) +{ + if (e->key() == Qt::Key_P) { // pause + m_animate = !m_animate; + setAnimating(m_animate); + } +} + +void OpenGLWindow::setAnimating(bool enabled) +{ + if (enabled) { + // Animate continuously, throttled by the blocking swapBuffers() call the + // QOpenGLWindow internally executes after each paint. Once that is done + // (frameSwapped signal is emitted), we schedule a new update. This + // obviously assumes that the swap interval (see + // QSurfaceFormat::setSwapInterval()) is non-zero. + connect(this, &QOpenGLWindow::frameSwapped, + this, QOverload<>::of(&QPaintDeviceWindow::update)); + update(); + } else { + disconnect(this, &QOpenGLWindow::frameSwapped, + this, QOverload<>::of(&QPaintDeviceWindow::update)); + } +} + +int main(int argc, char **argv) +{ + QGuiApplication app(argc, argv); + + OpenGLWindow window; + QSurfaceFormat fmt; + fmt.setDepthBufferSize(24); + fmt.setStencilBufferSize(8); + window.setFormat(fmt); + window.show(); + + return app.exec(); +} + +#include "main.moc" diff --git a/tests/manual/examples/opengl/qopenglwindow/qopenglwindow.pro b/tests/manual/examples/opengl/qopenglwindow/qopenglwindow.pro new file mode 100644 index 0000000000..e7073a324b --- /dev/null +++ b/tests/manual/examples/opengl/qopenglwindow/qopenglwindow.pro @@ -0,0 +1,16 @@ +TEMPLATE = app +TARGET = qopenglwindow +INCLUDEPATH += . +QT += opengl + +RESOURCES += shaders.qrc + +SOURCES += \ + main.cpp \ + background_renderer.cpp + +HEADERS += \ + background_renderer.h + +target.path = $$[QT_INSTALL_EXAMPLES]/opengl/qopenglwindow +INSTALLS += target diff --git a/tests/manual/examples/opengl/qopenglwindow/shaders.qrc b/tests/manual/examples/opengl/qopenglwindow/shaders.qrc new file mode 100644 index 0000000000..64eefe2c70 --- /dev/null +++ b/tests/manual/examples/opengl/qopenglwindow/shaders.qrc @@ -0,0 +1,5 @@ +<!DOCTYPE RCC><RCC version="1.0"> +<qresource> + <file>background.frag</file> +</qresource> +</RCC> |
