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Diffstat (limited to 'src/gui/opengl/qopenglpaintengine_p.h')
| -rw-r--r-- | src/gui/opengl/qopenglpaintengine_p.h | 396 |
1 files changed, 0 insertions, 396 deletions
diff --git a/src/gui/opengl/qopenglpaintengine_p.h b/src/gui/opengl/qopenglpaintengine_p.h deleted file mode 100644 index 81f17572b2..0000000000 --- a/src/gui/opengl/qopenglpaintengine_p.h +++ /dev/null @@ -1,396 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the QtGui 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 QOPENGLPAINTENGINE_P_H -#define QOPENGLPAINTENGINE_P_H - -// -// W A R N I N G -// ------------- -// -// This file is not part of the Qt API. It exists purely as an -// implementation detail. This header file may change from version to -// version without notice, or even be removed. -// -// We mean it. -// - -#include <QtGui/private/qtguiglobal_p.h> -#include <QDebug> - -#include <qopenglpaintdevice.h> - -#include <private/qpaintengineex_p.h> -#include <private/qopenglengineshadermanager_p.h> -#include <private/qopengl2pexvertexarray_p.h> -#include <private/qfontengine_p.h> -#include <private/qdatabuffer_p.h> -#include <private/qtriangulatingstroker_p.h> - -#include <private/qopenglextensions_p.h> - -#include <QOpenGLVertexArrayObject> -#include <QOpenGLBuffer> - -enum EngineMode { - ImageDrawingMode, - TextDrawingMode, - BrushDrawingMode, - ImageArrayDrawingMode, - ImageOpacityArrayDrawingMode -}; - -QT_BEGIN_NAMESPACE - -#define GL_STENCIL_HIGH_BIT GLuint(0x80) -#define QT_UNKNOWN_TEXTURE_UNIT GLuint(-1) -#define QT_DEFAULT_TEXTURE_UNIT GLuint(0) -#define QT_BRUSH_TEXTURE_UNIT GLuint(0) -#define QT_IMAGE_TEXTURE_UNIT GLuint(0) //Can be the same as brush texture unit -#define QT_MASK_TEXTURE_UNIT GLuint(1) -#define QT_BACKGROUND_TEXTURE_UNIT GLuint(2) - -class QOpenGL2PaintEngineExPrivate; - -class QOpenGL2PaintEngineState : public QPainterState -{ -public: - QOpenGL2PaintEngineState(QOpenGL2PaintEngineState &other); - QOpenGL2PaintEngineState(); - ~QOpenGL2PaintEngineState(); - - uint isNew : 1; - uint needsClipBufferClear : 1; - uint clipTestEnabled : 1; - uint canRestoreClip : 1; - uint matrixChanged : 1; - uint compositionModeChanged : 1; - uint opacityChanged : 1; - uint renderHintsChanged : 1; - uint clipChanged : 1; - uint currentClip : 8; - - QRect rectangleClip; -}; - -class Q_GUI_EXPORT QOpenGL2PaintEngineEx : public QPaintEngineEx -{ - Q_DECLARE_PRIVATE(QOpenGL2PaintEngineEx) -public: - QOpenGL2PaintEngineEx(); - ~QOpenGL2PaintEngineEx(); - - bool begin(QPaintDevice *device) override; - void ensureActive(); - bool end() override; - - virtual void clipEnabledChanged() override; - virtual void penChanged() override; - virtual void brushChanged() override; - virtual void brushOriginChanged() override; - virtual void opacityChanged() override; - virtual void compositionModeChanged() override; - virtual void renderHintsChanged() override; - virtual void transformChanged() override; - - virtual void drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr) override; - virtual void drawPixmapFragments(const QPainter::PixmapFragment *fragments, int fragmentCount, const QPixmap &pixmap, - QPainter::PixmapFragmentHints hints) override; - virtual void drawImage(const QRectF &r, const QImage &pm, const QRectF &sr, - Qt::ImageConversionFlags flags = Qt::AutoColor) override; - virtual void drawTextItem(const QPointF &p, const QTextItem &textItem) override; - virtual void fill(const QVectorPath &path, const QBrush &brush) override; - virtual void stroke(const QVectorPath &path, const QPen &pen) override; - virtual void clip(const QVectorPath &path, Qt::ClipOperation op) override; - - virtual void drawStaticTextItem(QStaticTextItem *textItem) override; - - bool drawTexture(const QRectF &r, GLuint textureId, const QSize &size, const QRectF &sr); - - Type type() const override { return OpenGL2; } - - virtual void setState(QPainterState *s) override; - virtual QPainterState *createState(QPainterState *orig) const override; - inline QOpenGL2PaintEngineState *state() { - return static_cast<QOpenGL2PaintEngineState *>(QPaintEngineEx::state()); - } - inline const QOpenGL2PaintEngineState *state() const { - return static_cast<const QOpenGL2PaintEngineState *>(QPaintEngineEx::state()); - } - - void beginNativePainting() override; - void endNativePainting() override; - - void invalidateState(); - - void setRenderTextActive(bool); - - bool isNativePaintingActive() const; - bool requiresPretransformedGlyphPositions(QFontEngine *, const QTransform &) const override { return false; } - bool shouldDrawCachedGlyphs(QFontEngine *, const QTransform &) const override; - -private: - Q_DISABLE_COPY_MOVE(QOpenGL2PaintEngineEx) - - friend class QOpenGLEngineShaderManager; -}; - -// This probably needs to grow to GL_MAX_VERTEX_ATTRIBS, but 3 is ok for now as that's -// all the GL2 engine uses: -#define QT_GL_VERTEX_ARRAY_TRACKED_COUNT 3 - -class QOpenGL2PaintEngineExPrivate : public QPaintEngineExPrivate -{ - Q_DECLARE_PUBLIC(QOpenGL2PaintEngineEx) -public: - enum StencilFillMode { - OddEvenFillMode, - WindingFillMode, - TriStripStrokeFillMode - }; - - QOpenGL2PaintEngineExPrivate(QOpenGL2PaintEngineEx *q_ptr) : - q(q_ptr), - shaderManager(nullptr), - width(0), height(0), - ctx(nullptr), - useSystemClip(true), - elementIndicesVBOId(0), - opacityArray(0), - snapToPixelGrid(false), - nativePaintingActive(false), - inverseScale(1), - lastTextureUnitUsed(QT_UNKNOWN_TEXTURE_UNIT), - vertexBuffer(QOpenGLBuffer::VertexBuffer), - texCoordBuffer(QOpenGLBuffer::VertexBuffer), - opacityBuffer(QOpenGLBuffer::VertexBuffer), - indexBuffer(QOpenGLBuffer::IndexBuffer) - { } - - ~QOpenGL2PaintEngineExPrivate(); - - void updateBrushTexture(); - void updateBrushUniforms(); - void updateMatrix(); - void updateCompositionMode(); - - enum TextureUpdateMode { UpdateIfNeeded, ForceUpdate }; - template<typename T> - void updateTexture(GLenum textureUnit, const T &texture, GLenum wrapMode, GLenum filterMode, TextureUpdateMode updateMode = UpdateIfNeeded); - template<typename T> - GLuint bindTexture(const T &texture); - void activateTextureUnit(GLenum textureUnit); - - void resetGLState(); - - // fill, stroke, drawTexture, drawPixmaps & drawCachedGlyphs are the main rendering entry-points, - // however writeClip can also be thought of as en entry point as it does similar things. - void fill(const QVectorPath &path); - void stroke(const QVectorPath &path, const QPen &pen); - void drawTexture(const QOpenGLRect& dest, const QOpenGLRect& src, const QSize &textureSize, bool opaque, bool pattern = false); - void drawPixmapFragments(const QPainter::PixmapFragment *fragments, int fragmentCount, const QPixmap &pixmap, - QPainter::PixmapFragmentHints hints); - void drawCachedGlyphs(QFontEngine::GlyphFormat glyphFormat, QStaticTextItem *staticTextItem); - - // Calls glVertexAttributePointer if the pointer has changed - inline void uploadData(unsigned int arrayIndex, const GLfloat *data, GLuint count); - inline bool uploadIndexData(const void *data, GLenum indexValueType, GLuint count); - - // draws whatever is in the vertex array: - void drawVertexArrays(const float *data, int *stops, int stopCount, GLenum primitive); - void drawVertexArrays(QOpenGL2PEXVertexArray &vertexArray, GLenum primitive) { - drawVertexArrays((const float *) vertexArray.data(), vertexArray.stops(), vertexArray.stopCount(), primitive); - } - - // Composites the bounding rect onto dest buffer: - void composite(const QOpenGLRect& boundingRect); - - // Calls drawVertexArrays to render into stencil buffer: - void fillStencilWithVertexArray(const float *data, int count, int *stops, int stopCount, const QOpenGLRect &bounds, StencilFillMode mode); - void fillStencilWithVertexArray(QOpenGL2PEXVertexArray& vertexArray, bool useWindingFill) { - fillStencilWithVertexArray((const float *) vertexArray.data(), 0, vertexArray.stops(), vertexArray.stopCount(), - vertexArray.boundingRect(), - useWindingFill ? WindingFillMode : OddEvenFillMode); - } - - void setBrush(const QBrush& brush); - void transferMode(EngineMode newMode); - bool prepareForDraw(bool srcPixelsAreOpaque); // returns true if the program has changed - bool prepareForCachedGlyphDraw(const QFontEngineGlyphCache &cache); - inline void useSimpleShader(); - inline GLuint location(const QOpenGLEngineShaderManager::Uniform uniform) { - return shaderManager->getUniformLocation(uniform); - } - - void clearClip(uint value); - void writeClip(const QVectorPath &path, uint value); - void resetClipIfNeeded(); - - void updateClipScissorTest(); - void setScissor(const QRect &rect); - void regenerateClip(); - void systemStateChanged() override; - - void setVertexAttribArrayEnabled(int arrayIndex, bool enabled = true); - void syncGlState(); - - static QOpenGLEngineShaderManager* shaderManagerForEngine(QOpenGL2PaintEngineEx *engine) { return engine->d_func()->shaderManager; } - static QOpenGL2PaintEngineExPrivate *getData(QOpenGL2PaintEngineEx *engine) { return engine->d_func(); } - static void cleanupVectorPath(QPaintEngineEx *engine, void *data); - - QOpenGLExtensions funcs; - - QOpenGL2PaintEngineEx* q; - QOpenGLEngineShaderManager* shaderManager; - QOpenGLPaintDevice* device; - int width, height; - QOpenGLContext *ctx; - EngineMode mode; - QFontEngine::GlyphFormat glyphCacheFormat; - - bool vertexAttributeArraysEnabledState[QT_GL_VERTEX_ARRAY_TRACKED_COUNT]; - - // Dirty flags - bool matrixDirty; // Implies matrix uniforms are also dirty - bool compositionModeDirty; - bool brushTextureDirty; - bool brushUniformsDirty; - bool opacityUniformDirty; - bool matrixUniformDirty; - - bool stencilClean; // Has the stencil not been used for clipping so far? - bool useSystemClip; - QRegion dirtyStencilRegion; - QRect currentScissorBounds; - uint maxClip; - - QBrush currentBrush; // May not be the state's brush! - const QBrush noBrush; - - QImage currentBrushImage; - - QOpenGL2PEXVertexArray vertexCoordinateArray; - QOpenGL2PEXVertexArray textureCoordinateArray; - QVector<GLushort> elementIndices; - GLuint elementIndicesVBOId; - QDataBuffer<GLfloat> opacityArray; - GLfloat staticVertexCoordinateArray[8]; - GLfloat staticTextureCoordinateArray[8]; - - bool snapToPixelGrid; - bool nativePaintingActive; - GLfloat pmvMatrix[3][3]; - GLfloat inverseScale; - - GLenum lastTextureUnitUsed; - GLuint lastTextureUsed; - - QOpenGLVertexArrayObject vao; - QOpenGLBuffer vertexBuffer; - QOpenGLBuffer texCoordBuffer; - QOpenGLBuffer opacityBuffer; - QOpenGLBuffer indexBuffer; - - bool needsSync; - bool multisamplingAlwaysEnabled; - - QTriangulatingStroker stroker; - QDashedStrokeProcessor dasher; - - QVector<GLuint> unusedVBOSToClean; - QVector<GLuint> unusedIBOSToClean; - - const GLfloat *vertexAttribPointers[3]; -}; - - -void QOpenGL2PaintEngineExPrivate::uploadData(unsigned int arrayIndex, const GLfloat *data, GLuint count) -{ - Q_ASSERT(arrayIndex < 3); - - // If a vertex array object is created we have a profile that supports them - // and we will upload the data via a QOpenGLBuffer. Otherwise we will use - // the legacy way of uploading the data via glVertexAttribPointer. - if (vao.isCreated()) { - if (arrayIndex == QT_VERTEX_COORDS_ATTR) { - vertexBuffer.bind(); - vertexBuffer.allocate(data, count * sizeof(float)); - } - if (arrayIndex == QT_TEXTURE_COORDS_ATTR) { - texCoordBuffer.bind(); - texCoordBuffer.allocate(data, count * sizeof(float)); - } - if (arrayIndex == QT_OPACITY_ATTR) { - opacityBuffer.bind(); - opacityBuffer.allocate(data, count * sizeof(float)); - } - if (arrayIndex == QT_OPACITY_ATTR) - funcs.glVertexAttribPointer(arrayIndex, 1, GL_FLOAT, GL_FALSE, 0, nullptr); - else - funcs.glVertexAttribPointer(arrayIndex, 2, GL_FLOAT, GL_FALSE, 0, nullptr); - } else { - // If we already uploaded the data we don't have to do it again - if (data == vertexAttribPointers[arrayIndex]) - return; - - // Store the data in cache and upload it to the graphics card. - vertexAttribPointers[arrayIndex] = data; - if (arrayIndex == QT_OPACITY_ATTR) - funcs.glVertexAttribPointer(arrayIndex, 1, GL_FLOAT, GL_FALSE, 0, data); - else - funcs.glVertexAttribPointer(arrayIndex, 2, GL_FLOAT, GL_FALSE, 0, data); - } -} - -bool QOpenGL2PaintEngineExPrivate::uploadIndexData(const void *data, GLenum indexValueType, GLuint count) -{ - // Follow the uploadData() logic: VBOs are used only when VAO support is available. - // Otherwise the legacy client-side pointer path is used. - if (vao.isCreated()) { - Q_ASSERT(indexValueType == GL_UNSIGNED_SHORT || indexValueType == GL_UNSIGNED_INT); - indexBuffer.bind(); - indexBuffer.allocate(data, count * (indexValueType == GL_UNSIGNED_SHORT ? sizeof(quint16) : sizeof(quint32))); - return true; - } - return false; -} - -QT_END_NAMESPACE - -#endif |