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Diffstat (limited to 'src/plugins/renderers/opengl/graphicshelpers/graphicscontext_p.h')
| -rw-r--r-- | src/plugins/renderers/opengl/graphicshelpers/graphicscontext_p.h | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/src/plugins/renderers/opengl/graphicshelpers/graphicscontext_p.h b/src/plugins/renderers/opengl/graphicshelpers/graphicscontext_p.h new file mode 100644 index 000000000..8da1a420c --- /dev/null +++ b/src/plugins/renderers/opengl/graphicshelpers/graphicscontext_p.h @@ -0,0 +1,272 @@ +/**************************************************************************** +** +** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB). +** Copyright (C) 2016 The Qt Company Ltd and/or its subsidiary(-ies). +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the Qt3D module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QT3DRENDER_RENDER_OPENGL_GRAPHICSCONTEXT_H +#define QT3DRENDER_RENDER_OPENGL_GRAPHICSCONTEXT_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists for the convenience +// of other Qt classes. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include <QOpenGLContext> +#include <QOpenGLFunctions> +#include <QOpenGLVertexArrayObject> +#include <QHash> +#include <QColor> +#include <QMatrix4x4> +#include <QBitArray> +#include <QImage> +#include <Qt3DRender/qclearbuffers.h> +#include <Qt3DRender/private/shader_p.h> +#include <Qt3DRender/qattribute.h> +#include <Qt3DRender/qmemorybarrier.h> +#include <Qt3DRender/private/handle_types_p.h> +#include <Qt3DRender/private/qgraphicsapifilter_p.h> +#include <Qt3DRender/private/uniform_p.h> +#include <Qt3DRender/private/qblitframebuffer_p.h> +#include <gl_handle_types_p.h> +#include <glbuffer_p.h> +#include <shaderparameterpack_p.h> +#include <graphicshelperinterface_p.h> +#include <qmath.h> + +QT_BEGIN_NAMESPACE + +class QOpenGLShaderProgram; +class QAbstractOpenGLFunctions; +#ifdef QT_OPENGL_LIB +class QOpenGLDebugLogger; +#endif + +namespace Qt3DRender { + +namespace Render { + +class RenderTarget; +class AttachmentPack; +class ShaderManager; + +namespace OpenGL { + +class GraphicsHelperInterface; +class GLShader; +class GLShaderManager; + +typedef QPair<QString, int> NamedUniformLocation; + +class Q_AUTOTEST_EXPORT GraphicsContext +{ +public: + GraphicsContext(); + ~GraphicsContext(); + + void setOpenGLContext(QOpenGLContext* ctx); + QOpenGLContext *openGLContext() { return m_gl; } + bool makeCurrent(QSurface *surface); + void doneCurrent(); + bool hasValidGLHelper() const; + bool isInitialized() const; + + // Shaders + struct ShaderCreationInfo + { + bool linkSucceeded = false; + QString logs; + }; + + ShaderCreationInfo createShaderProgram(GLShader *shaderNode); + void introspectShaderInterface(GLShader *shader); + void loadShader(Shader* shader, ShaderManager *shaderManager, GLShaderManager *glShaderManager); + + GLuint defaultFBO() const { return m_defaultFBO; } + + const GraphicsApiFilterData *contextInfo() const; + + // Wrapper methods + void clearBackBuffer(QClearBuffers::BufferTypeFlags buffers); + void alphaTest(GLenum mode1, GLenum mode2); + void bindFramebuffer(GLuint fbo, GraphicsHelperInterface::FBOBindMode mode); + void bindBufferBase(GLenum target, GLuint bindingIndex, GLuint buffer); + void bindFragOutputs(GLuint shader, const QHash<QString, int> &outputs); + void bindImageTexture(GLuint imageUnit, GLuint texture, GLint mipLevel, GLboolean layered, GLint layer, GLenum access, GLenum format); + void bindUniformBlock(GLuint programId, GLuint uniformBlockIndex, GLuint uniformBlockBinding); + void bindShaderStorageBlock(GLuint programId, GLuint shaderStorageBlockIndex, GLuint shaderStorageBlockBinding); + void blendEquation(GLenum mode); + void blendFunci(GLuint buf, GLenum sfactor, GLenum dfactor); + void blendFuncSeparatei(GLuint buf, GLenum sRGB, GLenum dRGB, GLenum sAlpha, GLenum dAlpha); + GLuint boundFrameBufferObject(); + void buildUniformBuffer(const QVariant &v, const ShaderUniform &description, QByteArray &buffer); + void clearBufferf(GLint drawbuffer, const QVector4D &values); + void clearColor(const QColor &color); + void clearDepthValue(float depth); + void clearStencilValue(int stencil); + void depthRange(GLdouble nearValue, GLdouble farValue); + void depthMask(GLenum mode); + void depthTest(GLenum mode); + void disableClipPlane(int clipPlane); + void disablei(GLenum cap, GLuint index); + void disablePrimitiveRestart(); + void dispatchCompute(int x, int y, int z); + char * mapBuffer(GLenum target, GLsizeiptr size); + GLboolean unmapBuffer(GLenum target); + void drawArrays(GLenum primitiveType, GLint first, GLsizei count); + void drawArraysIndirect(GLenum mode,void *indirect); + void drawArraysInstanced(GLenum primitiveType, GLint first, GLsizei count, GLsizei instances); + void drawArraysInstancedBaseInstance(GLenum primitiveType, GLint first, GLsizei count, GLsizei instances, GLsizei baseinstance); + void drawElements(GLenum primitiveType, GLsizei primitiveCount, GLint indexType, void * indices, GLint baseVertex); + void drawElementsIndirect(GLenum mode, GLenum type, void *indirect); + void drawElementsInstancedBaseVertexBaseInstance(GLenum primitiveType, GLsizei primitiveCount, GLint indexType, void * indices, GLsizei instances, GLint baseVertex, GLint baseInstance); + void enableClipPlane(int clipPlane); + void enablei(GLenum cap, GLuint index); + void enablePrimitiveRestart(int restartIndex); + void frontFace(GLenum mode); + GLint maxClipPlaneCount(); + GLint maxTextureUnitsCount() const; + GLint maxImageUnitsCount() const; + void pointSize(bool programmable, GLfloat value); + void readBuffer(GLenum mode); + void drawBuffer(GLenum mode); + void drawBuffers(GLsizei n, const int *bufs); + void setMSAAEnabled(bool enabled); + void setAlphaCoverageEnabled(bool enabled); + void setClipPlane(int clipPlane, const QVector3D &normal, float distance); + void setSeamlessCubemap(bool enable); + void setVerticesPerPatch(GLint verticesPerPatch); + void memoryBarrier(QMemoryBarrier::Operations barriers); + void activateDrawBuffers(const AttachmentPack &attachments); + void rasterMode(GLenum faceMode, GLenum rasterMode); + + // Helper methods + static GLint elementType(GLint type); + static GLint tupleSizeFromType(GLint type); + static GLuint byteSizeFromType(GLint type); + static GLint glDataTypeFromAttributeDataType(QAttribute::VertexBaseType dataType); + + bool supportsDrawBuffersBlend() const; + bool supportsVAO() const { return m_supportsVAO; } + + void initialize(); + void initializeHelpers(QSurface *surface); + GraphicsHelperInterface *resolveHighestOpenGLFunctions(); + + bool m_initialized; + bool m_supportsVAO; + GLint m_maxTextureUnits; + GLint m_maxImageUnits; + GLuint m_defaultFBO; + QOpenGLContext *m_gl; + GraphicsHelperInterface *m_glHelper; + + QHash<QSurface *, GraphicsHelperInterface*> m_glHelpers; + GraphicsApiFilterData m_contextInfo; +#ifdef QT_OPENGL_LIB + QScopedPointer<QOpenGLDebugLogger> m_debugLogger; +#endif + + friend class OpenGLVertexArrayObject; + OpenGLVertexArrayObject *m_currentVAO; + + void applyUniform(const ShaderUniform &description, const UniformValue &v); + + template<UniformType> + void applyUniformHelper(const ShaderUniform &, const UniformValue &) const + { + Q_ASSERT_X(false, Q_FUNC_INFO, "Uniform: Didn't provide specialized apply() implementation"); + } +}; + +#define QT3D_UNIFORM_TYPE_PROTO(UniformTypeEnum, BaseType, Func) \ +template<> \ +void GraphicsContext::applyUniformHelper<UniformTypeEnum>(const ShaderUniform &description, const UniformValue &value) const; + +#define QT3D_UNIFORM_TYPE_IMPL(UniformTypeEnum, BaseType, Func) \ + template<> \ + void GraphicsContext::applyUniformHelper<UniformTypeEnum>(const ShaderUniform &description, const UniformValue &value) const \ +{ \ + const int count = qMin(description.m_size, int(value.byteSize() / description.m_rawByteSize)); \ + m_glHelper->Func(description.m_location, count, value.constData<BaseType>()); \ +} + + +QT3D_UNIFORM_TYPE_PROTO(UniformType::Float, float, glUniform1fv) +QT3D_UNIFORM_TYPE_PROTO(UniformType::Vec2, float, glUniform2fv) +QT3D_UNIFORM_TYPE_PROTO(UniformType::Vec3, float, glUniform3fv) +QT3D_UNIFORM_TYPE_PROTO(UniformType::Vec4, float, glUniform4fv) + +// OpenGL expects int* as values for booleans +QT3D_UNIFORM_TYPE_PROTO(UniformType::Bool, int, glUniform1iv) +QT3D_UNIFORM_TYPE_PROTO(UniformType::BVec2, int, glUniform2iv) +QT3D_UNIFORM_TYPE_PROTO(UniformType::BVec3, int, glUniform3iv) +QT3D_UNIFORM_TYPE_PROTO(UniformType::BVec4, int, glUniform4iv) + +QT3D_UNIFORM_TYPE_PROTO(UniformType::Int, int, glUniform1iv) +QT3D_UNIFORM_TYPE_PROTO(UniformType::IVec2, int, glUniform2iv) +QT3D_UNIFORM_TYPE_PROTO(UniformType::IVec3, int, glUniform3iv) +QT3D_UNIFORM_TYPE_PROTO(UniformType::IVec4, int, glUniform4iv) + +QT3D_UNIFORM_TYPE_PROTO(UniformType::UInt, uint, glUniform1uiv) +QT3D_UNIFORM_TYPE_PROTO(UniformType::UIVec2, uint, glUniform2uiv) +QT3D_UNIFORM_TYPE_PROTO(UniformType::UIVec3, uint, glUniform3uiv) +QT3D_UNIFORM_TYPE_PROTO(UniformType::UIVec4, uint, glUniform4uiv) + +QT3D_UNIFORM_TYPE_PROTO(UniformType::Mat2, float, glUniformMatrix2fv) +QT3D_UNIFORM_TYPE_PROTO(UniformType::Mat3, float, glUniformMatrix3fv) +QT3D_UNIFORM_TYPE_PROTO(UniformType::Mat4, float, glUniformMatrix4fv) +QT3D_UNIFORM_TYPE_PROTO(UniformType::Mat2x3, float, glUniformMatrix2x3fv) +QT3D_UNIFORM_TYPE_PROTO(UniformType::Mat3x2, float, glUniformMatrix3x2fv) +QT3D_UNIFORM_TYPE_PROTO(UniformType::Mat2x4, float, glUniformMatrix2x4fv) +QT3D_UNIFORM_TYPE_PROTO(UniformType::Mat4x2, float, glUniformMatrix4x2fv) +QT3D_UNIFORM_TYPE_PROTO(UniformType::Mat3x4, float, glUniformMatrix3x4fv) +QT3D_UNIFORM_TYPE_PROTO(UniformType::Mat4x3, float, glUniformMatrix4x3fv) + +} // namespace OpenGL +} // namespace Render +} // namespace Qt3DRender + +QT_END_NAMESPACE + +#endif // QT3DRENDER_RENDER_OPENGL_GRAPHICSCONTEXT_H |