--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,299 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGRAPHICSCONTEXT_OPENGL2_P_H
+#define QGRAPHICSCONTEXT_OPENGL2_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 <QDebug>
+
+#include <private/qpaintengineex_p.h>
+#include <private/qglengineshadermanager_p.h>
+#include <private/qgl2pexvertexarray_p.h>
+#include <private/qglpaintdevice_p.h>
+#include <private/qglpixmapfilter_p.h>
+#include <private/qfontengine_p.h>
+#include <private/qdatabuffer_p.h>
+#include <private/qtriangulatingstroker_p.h>
+
+enum EngineMode {
+ ImageDrawingMode,
+ TextDrawingMode,
+ BrushDrawingMode,
+ ImageArrayDrawingMode
+};
+
+QT_BEGIN_NAMESPACE
+
+class QGL2PaintEngineExPrivate;
+
+
+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_OPENGL_EXPORT QGL2PaintEngineEx : public QPaintEngineEx
+{
+ Q_DECLARE_PRIVATE(QGL2PaintEngineEx)
+public:
+ QGL2PaintEngineEx();
+ ~QGL2PaintEngineEx();
+
+ bool begin(QPaintDevice *device);
+ bool end();
+
+ void ensureActive();
+
+ virtual void fill(const QVectorPath &path, const QBrush &brush);
+ virtual void stroke(const QVectorPath &path, const QPen &pen);
+ virtual void clip(const QVectorPath &path, Qt::ClipOperation op);
+
+ virtual void clipEnabledChanged();
+ virtual void penChanged();
+ virtual void brushChanged();
+ virtual void brushOriginChanged();
+ virtual void opacityChanged();
+ virtual void compositionModeChanged();
+ virtual void renderHintsChanged();
+ virtual void transformChanged();
+
+
+ virtual void drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr);
+ virtual void drawImage(const QRectF &r, const QImage &pm, const QRectF &sr,
+ Qt::ImageConversionFlags flags = Qt::AutoColor);
+ virtual void drawTexture(const QRectF &r, GLuint textureId, const QSize &size, const QRectF &sr);
+
+ virtual void drawTextItem(const QPointF &p, const QTextItem &textItem);
+
+ virtual void drawPixmaps(const QDrawPixmaps::Data *drawingData, int dataCount, const QPixmap &pixmap, QDrawPixmaps::DrawingHints hints);
+
+ Type type() const { return OpenGL2; }
+
+ void setState(QPainterState *s);
+ QPainterState *createState(QPainterState *orig) const;
+ inline QOpenGL2PaintEngineState *state() {
+ return static_cast<QOpenGL2PaintEngineState *>(QPaintEngineEx::state());
+ }
+ inline const QOpenGL2PaintEngineState *state() const {
+ return static_cast<const QOpenGL2PaintEngineState *>(QPaintEngineEx::state());
+ }
+
+ void beginNativePainting();
+ void endNativePainting();
+
+ const QGLContext* context();
+
+ QPixmapFilter *pixmapFilter(int type, const QPixmapFilter *prototype);
+
+ void setRenderTextActive(bool);
+
+private:
+ Q_DISABLE_COPY(QGL2PaintEngineEx)
+};
+
+
+class QGL2PaintEngineExPrivate : public QPaintEngineExPrivate
+{
+ Q_DECLARE_PUBLIC(QGL2PaintEngineEx)
+public:
+ enum StencilFillMode {
+ OddEvenFillMode,
+ WindingFillMode,
+ TriStripStrokeFillMode
+ };
+
+ QGL2PaintEngineExPrivate(QGL2PaintEngineEx *q_ptr) :
+ q(q_ptr),
+ width(0), height(0),
+ ctx(0),
+ currentBrush(0),
+ inverseScale(1),
+ shaderManager(0),
+ inRenderText(false)
+ { }
+
+ ~QGL2PaintEngineExPrivate();
+
+ void updateBrushTexture();
+ void updateBrushUniforms();
+ void updateMatrix();
+ void updateCompositionMode();
+ void updateTextureFilter(GLenum target, GLenum wrapMode, bool smoothPixmapTransform, GLuint id = -1);
+
+ void setBrush(const QBrush* brush);
+
+ void transferMode(EngineMode newMode);
+ void resetGLState();
+
+ // fill, drawOutline, drawTexture & drawCachedGlyphs are the rendering entry points:
+ void fill(const QVectorPath &path);
+ void drawTexture(const QGLRect& dest, const QGLRect& src, const QSize &textureSize, bool opaque, bool pattern = false);
+ void drawCachedGlyphs(const QPointF &p, QFontEngineGlyphCache::Type glyphType, const QTextItemInt &ti);
+
+ void drawVertexArrays(const float *data, const QVector<int> *stops, GLenum primitive);
+ void drawVertexArrays(QGL2PEXVertexArray &vertexArray, GLenum primitive) {
+ drawVertexArrays((const float *) vertexArray.data(), &vertexArray.stops(), primitive);
+ }
+
+ // ^ draws whatever is in the vertex array
+ void composite(const QGLRect& boundingRect);
+ // ^ Composites the bounding rect onto dest buffer
+
+ void fillStencilWithVertexArray(const float *data, int count, const QVector<int> *stops, const QGLRect &bounds, StencilFillMode mode);
+ void fillStencilWithVertexArray(QGL2PEXVertexArray& vertexArray, bool useWindingFill) {
+ fillStencilWithVertexArray((const float *) vertexArray.data(), 0, &vertexArray.stops(),
+ vertexArray.boundingRect(),
+ useWindingFill ? WindingFillMode : OddEvenFillMode);
+ }
+ // ^ Calls drawVertexArrays to render into stencil buffer
+
+ bool prepareForDraw(bool srcPixelsAreOpaque);
+ // ^ returns whether the current program changed or not
+
+ inline void useSimpleShader();
+
+ void prepareDepthRangeForRenderText();
+ void restoreDepthRangeForRenderText();
+
+ static QGLEngineShaderManager* shaderManagerForEngine(QGL2PaintEngineEx *engine) { return engine->d_func()->shaderManager; }
+
+ QGL2PaintEngineEx* q;
+ QGLPaintDevice* device;
+ int width, height;
+ QGLContext *ctx;
+ EngineMode mode;
+ QFontEngineGlyphCache::Type glyphCacheType;
+
+ // Dirty flags
+ bool matrixDirty; // Implies matrix uniforms are also dirty
+ bool compositionModeDirty;
+ bool brushTextureDirty;
+ bool brushUniformsDirty;
+ bool simpleShaderMatrixUniformDirty;
+ bool shaderMatrixUniformDirty;
+ bool opacityUniformDirty;
+
+ bool stencilClean; // Has the stencil not been used for clipping so far?
+ QRegion dirtyStencilRegion;
+ QRect currentScissorBounds;
+ uint maxClip;
+
+ const QBrush* currentBrush; // May not be the state's brush!
+
+ GLfloat inverseScale;
+
+ QGL2PEXVertexArray vertexCoordinateArray;
+ QGL2PEXVertexArray textureCoordinateArray;
+ QDataBuffer<GLfloat> opacityArray;
+
+ GLfloat staticVertexCoordinateArray[8];
+ GLfloat staticTextureCoordinateArray[8];
+
+ GLfloat pmvMatrix[4][4];
+
+ QGLEngineShaderManager* shaderManager;
+
+ void clearClip(uint value);
+ void writeClip(const QVectorPath &path, uint value);
+ void resetClipIfNeeded();
+
+ void updateClipScissorTest();
+ void setScissor(const QRect &rect);
+ void regenerateClip();
+ void systemStateChanged();
+ uint use_system_clip : 1;
+
+ uint location(QGLEngineShaderManager::Uniform uniform)
+ {
+ return shaderManager->getUniformLocation(uniform);
+ }
+
+ GLuint lastTexture;
+
+ bool needsSync;
+ bool inRenderText;
+
+ GLfloat depthRange[2];
+
+ float textureInvertedY;
+
+ QTriangulatingStroker stroker;
+ QDashedStrokeProcessor dasher;
+ QTransform temporaryTransform;
+
+ QScopedPointer<QPixmapFilter> convolutionFilter;
+ QScopedPointer<QPixmapFilter> colorizeFilter;
+ QScopedPointer<QPixmapFilter> blurFilter;
+ QScopedPointer<QPixmapFilter> fastBlurFilter;
+ QScopedPointer<QPixmapFilter> dropShadowFilter;
+ QScopedPointer<QPixmapFilter> fastDropShadowFilter;
+};
+
+QT_END_NAMESPACE
+
+#endif