diff options
Diffstat (limited to 'src/opengl/gl2paintengineex')
15 files changed, 539 insertions, 411 deletions
diff --git a/src/opengl/gl2paintengineex/qgl2pexvertexarray.cpp b/src/opengl/gl2paintengineex/qgl2pexvertexarray.cpp index ee1a797..516b847 100644 --- a/src/opengl/gl2paintengineex/qgl2pexvertexarray.cpp +++ b/src/opengl/gl2paintengineex/qgl2pexvertexarray.cpp @@ -1,6 +1,6 @@ /**************************************************************************** ** -** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** diff --git a/src/opengl/gl2paintengineex/qgl2pexvertexarray_p.h b/src/opengl/gl2paintengineex/qgl2pexvertexarray_p.h index 98eaa91..e0497b1 100644 --- a/src/opengl/gl2paintengineex/qgl2pexvertexarray_p.h +++ b/src/opengl/gl2paintengineex/qgl2pexvertexarray_p.h @@ -1,6 +1,6 @@ /**************************************************************************** ** -** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** diff --git a/src/opengl/gl2paintengineex/qglcustomshaderstage.cpp b/src/opengl/gl2paintengineex/qglcustomshaderstage.cpp index b71a7b7..f30ad9c 100644 --- a/src/opengl/gl2paintengineex/qglcustomshaderstage.cpp +++ b/src/opengl/gl2paintengineex/qglcustomshaderstage.cpp @@ -1,6 +1,6 @@ /**************************************************************************** ** -** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** diff --git a/src/opengl/gl2paintengineex/qglcustomshaderstage_p.h b/src/opengl/gl2paintengineex/qglcustomshaderstage_p.h index e0033be..d2ebd87 100644 --- a/src/opengl/gl2paintengineex/qglcustomshaderstage_p.h +++ b/src/opengl/gl2paintengineex/qglcustomshaderstage_p.h @@ -1,6 +1,6 @@ /**************************************************************************** ** -** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** diff --git a/src/opengl/gl2paintengineex/qglengineshadermanager.cpp b/src/opengl/gl2paintengineex/qglengineshadermanager.cpp index d28d5f3..556b888 100644 --- a/src/opengl/gl2paintengineex/qglengineshadermanager.cpp +++ b/src/opengl/gl2paintengineex/qglengineshadermanager.cpp @@ -1,6 +1,6 @@ /**************************************************************************** ** -** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** @@ -218,6 +218,23 @@ QGLEngineSharedShaders::QGLEngineSharedShaders(const QGLContext* context) } +QGLEngineSharedShaders::~QGLEngineSharedShaders() +{ + QList<QGLEngineShaderProg*>::iterator itr; + for (itr = cachedPrograms.begin(); itr != cachedPrograms.end(); ++itr) + delete *itr; + + if (blitShaderProg) { + delete blitShaderProg; + blitShaderProg = 0; + } + + if (simpleShaderProg) { + delete simpleShaderProg; + simpleShaderProg = 0; + } +} + #if defined (QT_DEBUG) QByteArray QGLEngineSharedShaders::snippetNameStr(SnippetName name) { @@ -505,7 +522,27 @@ QGLShaderProgram* QGLEngineShaderManager::currentProgram() if (currentShaderProg) return currentShaderProg->program; else - return simpleProgram(); + return sharedShaders->simpleProgram(); +} + +void QGLEngineShaderManager::useSimpleProgram() +{ + sharedShaders->simpleProgram()->bind(); + QGLContextPrivate* ctx_d = ctx->d_func(); + ctx_d->setVertexAttribArrayEnabled(QT_VERTEX_COORDS_ATTR, true); + ctx_d->setVertexAttribArrayEnabled(QT_TEXTURE_COORDS_ATTR, false); + ctx_d->setVertexAttribArrayEnabled(QT_OPACITY_ATTR, false); + shaderProgNeedsChanging = true; +} + +void QGLEngineShaderManager::useBlitProgram() +{ + sharedShaders->blitProgram()->bind(); + QGLContextPrivate* ctx_d = ctx->d_func(); + ctx_d->setVertexAttribArrayEnabled(QT_VERTEX_COORDS_ATTR, true); + ctx_d->setVertexAttribArrayEnabled(QT_TEXTURE_COORDS_ATTR, true); + ctx_d->setVertexAttribArrayEnabled(QT_OPACITY_ATTR, false); + shaderProgNeedsChanging = true; } QGLShaderProgram* QGLEngineShaderManager::simpleProgram() @@ -716,6 +753,13 @@ bool QGLEngineShaderManager::useCorrectShaderProg() customSrcStage->setUniforms(currentShaderProg->program); } + // Make sure all the vertex attribute arrays the program uses are enabled (and the ones it + // doesn't use are disabled) + QGLContextPrivate* ctx_d = ctx->d_func(); + ctx_d->setVertexAttribArrayEnabled(QT_VERTEX_COORDS_ATTR, true); + ctx_d->setVertexAttribArrayEnabled(QT_TEXTURE_COORDS_ATTR, currentShaderProg->useTextureCoords); + ctx_d->setVertexAttribArrayEnabled(QT_OPACITY_ATTR, currentShaderProg->useOpacityAttribute); + shaderProgNeedsChanging = false; return true; } diff --git a/src/opengl/gl2paintengineex/qglengineshadermanager_p.h b/src/opengl/gl2paintengineex/qglengineshadermanager_p.h index 1ec4cdc..c52e5c0 100644 --- a/src/opengl/gl2paintengineex/qglengineshadermanager_p.h +++ b/src/opengl/gl2paintengineex/qglengineshadermanager_p.h @@ -1,6 +1,6 @@ /**************************************************************************** ** -** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** @@ -344,6 +344,7 @@ public: */ QGLEngineSharedShaders(const QGLContext *context); + ~QGLEngineSharedShaders(); QGLShaderProgram *simpleProgram() { return simpleShaderProg; } QGLShaderProgram *blitProgram() { return blitShaderProg; } @@ -468,6 +469,9 @@ public: void setDirty(); // someone has manually changed the current shader program bool useCorrectShaderProg(); // returns true if the shader program needed to be changed + void useSimpleProgram(); + void useBlitProgram(); + QGLShaderProgram* currentProgram(); // Returns pointer to the shader the manager has chosen QGLShaderProgram* simpleProgram(); // Used to draw into e.g. stencil buffers QGLShaderProgram* blitProgram(); // Used to blit a texture into the framebuffer diff --git a/src/opengl/gl2paintengineex/qglengineshadersource_p.h b/src/opengl/gl2paintengineex/qglengineshadersource_p.h index 46de124..d9a61e9 100644 --- a/src/opengl/gl2paintengineex/qglengineshadersource_p.h +++ b/src/opengl/gl2paintengineex/qglengineshadersource_p.h @@ -1,6 +1,6 @@ /**************************************************************************** ** -** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** diff --git a/src/opengl/gl2paintengineex/qglgradientcache.cpp b/src/opengl/gl2paintengineex/qglgradientcache.cpp index e06f15d..192e01c 100644 --- a/src/opengl/gl2paintengineex/qglgradientcache.cpp +++ b/src/opengl/gl2paintengineex/qglgradientcache.cpp @@ -1,6 +1,6 @@ /**************************************************************************** ** -** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** diff --git a/src/opengl/gl2paintengineex/qglgradientcache_p.h b/src/opengl/gl2paintengineex/qglgradientcache_p.h index 3813f39..0a5f846 100644 --- a/src/opengl/gl2paintengineex/qglgradientcache_p.h +++ b/src/opengl/gl2paintengineex/qglgradientcache_p.h @@ -1,6 +1,6 @@ /**************************************************************************** ** -** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** diff --git a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp index d3a9547..caa679b 100644 --- a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp +++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp @@ -1,6 +1,6 @@ /**************************************************************************** ** -** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** @@ -75,15 +75,14 @@ #include <QPaintEngine> #include <private/qpainter_p.h> #include <private/qfontengine_p.h> -#include <private/qtextureglyphcache_p.h> #include <private/qpixmapdata_gl_p.h> #include <private/qdatabuffer_p.h> #include "qglgradientcache_p.h" #include "qglengineshadermanager_p.h" #include "qgl2pexvertexarray_p.h" - #include "qtriangulatingstroker_p.h" +#include "qtextureglyphcache_gl_p.h" #include <QDebug> @@ -91,254 +90,6 @@ QT_BEGIN_NAMESPACE //#define QT_GL_NO_SCISSOR_TEST -static const GLuint GL_STENCIL_HIGH_BIT = 0x80; -static const GLuint QT_BRUSH_TEXTURE_UNIT = 0; -static const GLuint QT_IMAGE_TEXTURE_UNIT = 0; //Can be the same as brush texture unit -static const GLuint QT_MASK_TEXTURE_UNIT = 1; -static const GLuint QT_BACKGROUND_TEXTURE_UNIT = 2; - -#ifdef Q_WS_WIN -extern Q_GUI_EXPORT bool qt_cleartype_enabled; -#endif - -class QGLTextureGlyphCache : public QObject, public QTextureGlyphCache -{ - Q_OBJECT -public: - QGLTextureGlyphCache(QGLContext *context, QFontEngineGlyphCache::Type type, const QTransform &matrix); - ~QGLTextureGlyphCache(); - - virtual void createTextureData(int width, int height); - virtual void resizeTextureData(int width, int height); - virtual void fillTexture(const Coord &c, glyph_t glyph); - virtual int glyphMargin() const; - - inline GLuint texture() const { return m_texture; } - - inline int width() const { return m_width; } - inline int height() const { return m_height; } - - inline void setPaintEnginePrivate(QGL2PaintEngineExPrivate *p) { pex = p; } - - -public Q_SLOTS: - void contextDestroyed(const QGLContext *context) { - if (context == ctx) { - QList<const QGLContext *> shares = qgl_share_reg()->shares(ctx); - if (shares.isEmpty()) { - glDeleteFramebuffers(1, &m_fbo); - if (m_width || m_height) - glDeleteTextures(1, &m_texture); - ctx = 0; - } else { - // since the context holding the texture is shared, and - // about to be destroyed, we have to transfer ownership - // of the texture to one of the share contexts - ctx = const_cast<QGLContext *>((ctx == shares.at(0)) ? shares.at(1) : shares.at(0)); - } - } - } - -private: - QGLContext *ctx; - - QGL2PaintEngineExPrivate *pex; - - GLuint m_texture; - GLuint m_fbo; - - int m_width; - int m_height; - - QGLShaderProgram *m_program; -}; - -QGLTextureGlyphCache::QGLTextureGlyphCache(QGLContext *context, QFontEngineGlyphCache::Type type, const QTransform &matrix) - : QTextureGlyphCache(type, matrix) - , ctx(context) - , m_width(0) - , m_height(0) -{ - glGenFramebuffers(1, &m_fbo); - connect(QGLSignalProxy::instance(), SIGNAL(aboutToDestroyContext(const QGLContext*)), - SLOT(contextDestroyed(const QGLContext*))); -} - -QGLTextureGlyphCache::~QGLTextureGlyphCache() -{ - if (ctx) { - QGLShareContextScope scope(ctx); - glDeleteFramebuffers(1, &m_fbo); - - if (m_width || m_height) - glDeleteTextures(1, &m_texture); - } -} - -void QGLTextureGlyphCache::createTextureData(int width, int height) -{ - glGenTextures(1, &m_texture); - glBindTexture(GL_TEXTURE_2D, m_texture); - - m_width = width; - m_height = height; - - QVarLengthArray<uchar> data(width * height); - for (int i = 0; i < data.size(); ++i) - data[i] = 0; - - if (m_type == QFontEngineGlyphCache::Raster_RGBMask) - glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_ALPHA, GL_UNSIGNED_BYTE, &data[0]); - else - glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, width, height, 0, GL_ALPHA, GL_UNSIGNED_BYTE, &data[0]); - - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); -} - -void QGLTextureGlyphCache::resizeTextureData(int width, int height) -{ - // ### the QTextureGlyphCache API needs to be reworked to allow - // ### resizeTextureData to fail - - int oldWidth = m_width; - int oldHeight = m_height; - - GLuint oldTexture = m_texture; - createTextureData(width, height); - - glBindFramebuffer(GL_FRAMEBUFFER_EXT, m_fbo); - - GLuint tmp_texture; - glGenTextures(1, &tmp_texture); - glBindTexture(GL_TEXTURE_2D, tmp_texture); - glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, oldWidth, oldHeight, 0, - GL_RGBA, GL_UNSIGNED_BYTE, NULL); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); - glBindTexture(GL_TEXTURE_2D, 0); - glFramebufferTexture2D(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, - GL_TEXTURE_2D, tmp_texture, 0); - - glActiveTexture(GL_TEXTURE0 + QT_IMAGE_TEXTURE_UNIT); - glBindTexture(GL_TEXTURE_2D, oldTexture); - - pex->transferMode(BrushDrawingMode); - -#ifndef QT_OPENGL_ES_2 - if (pex->inRenderText) - glPushAttrib(GL_ENABLE_BIT | GL_VIEWPORT_BIT | GL_SCISSOR_BIT); -#endif - - glDisable(GL_STENCIL_TEST); - glDisable(GL_DEPTH_TEST); - glDisable(GL_SCISSOR_TEST); - glDisable(GL_BLEND); - - glViewport(0, 0, oldWidth, oldHeight); - - float vertexCoordinateArray[] = { -1, -1, 1, -1, 1, 1, -1, 1 }; - float textureCoordinateArray[] = { 0, 0, 1, 0, 1, 1, 0, 1 }; - - glEnableVertexAttribArray(QT_VERTEX_COORDS_ATTR); - glEnableVertexAttribArray(QT_TEXTURE_COORDS_ATTR); - - glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, vertexCoordinateArray); - glVertexAttribPointer(QT_TEXTURE_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, textureCoordinateArray); - - pex->shaderManager->blitProgram()->bind(); - pex->shaderManager->blitProgram()->setUniformValue("imageTexture", QT_IMAGE_TEXTURE_UNIT); - pex->shaderManager->setDirty(); - - glDrawArrays(GL_TRIANGLE_FAN, 0, 4); - - glDisableVertexAttribArray(QT_VERTEX_COORDS_ATTR); - glDisableVertexAttribArray(QT_TEXTURE_COORDS_ATTR); - - glBindTexture(GL_TEXTURE_2D, m_texture); - -#ifdef QT_OPENGL_ES_2 - QDataBuffer<uchar> buffer(4*oldWidth*oldHeight); - buffer.resize(4*oldWidth*oldHeight); - glReadPixels(0, 0, oldWidth, oldHeight, GL_RGBA, GL_UNSIGNED_BYTE, buffer.data()); - - // do an in-place conversion from GL_RGBA to GL_ALPHA - for (int i=0; i<oldWidth*oldHeight; ++i) - buffer.data()[i] = buffer.at(4*i + 3); - - glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, oldWidth, oldHeight, - GL_ALPHA, GL_UNSIGNED_BYTE, buffer.data()); -#else - glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, oldWidth, oldHeight); -#endif - - glFramebufferRenderbuffer(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, - GL_RENDERBUFFER_EXT, 0); - glDeleteTextures(1, &tmp_texture); - glDeleteTextures(1, &oldTexture); - - glBindFramebuffer(GL_FRAMEBUFFER_EXT, ctx->d_ptr->current_fbo); - - glViewport(0, 0, pex->width, pex->height); - pex->updateClipScissorTest(); - -#ifndef QT_OPENGL_ES_2 - if (pex->inRenderText) - glPopAttrib(); -#endif -} - -void QGLTextureGlyphCache::fillTexture(const Coord &c, glyph_t glyph) -{ - QImage mask = textureMapForGlyph(glyph); - const int maskWidth = mask.width(); - const int maskHeight = mask.height(); - - if (mask.format() == QImage::Format_Mono) { - mask = mask.convertToFormat(QImage::Format_Indexed8); - for (int y = 0; y < maskHeight; ++y) { - uchar *src = (uchar *) mask.scanLine(y); - for (int x = 0; x < maskWidth; ++x) - src[x] = -src[x]; // convert 0 and 1 into 0 and 255 - } - } - - - glBindTexture(GL_TEXTURE_2D, m_texture); - if (mask.format() == QImage::Format_RGB32) { - glTexSubImage2D(GL_TEXTURE_2D, 0, c.x, c.y, maskWidth, maskHeight, GL_BGRA, GL_UNSIGNED_BYTE, mask.bits()); - } else { -#ifdef QT_OPENGL_ES2 - glTexSubImage2D(GL_TEXTURE_2D, 0, c.x, c.y, maskWidth, maskHeight, GL_ALPHA, GL_UNSIGNED_BYTE, mask.bits()); -#else - // glTexSubImage2D() might cause some garbage to appear in the texture if the mask width is - // not a multiple of four bytes. The bug appeared on a computer with 32-bit Windows Vista - // and nVidia GeForce 8500GT. GL_UNPACK_ALIGNMENT is set to four bytes, 'mask' has a - // multiple of four bytes per line, and most of the glyph shows up correctly in the - // texture, which makes me think that this is a driver bug. - // One workaround is to make sure the mask width is a multiple of four bytes, for instance - // by converting it to a format with four bytes per pixel. Another is to copy one line at a - // time. - - for (int i = 0; i < maskHeight; ++i) - glTexSubImage2D(GL_TEXTURE_2D, 0, c.x, c.y + i, maskWidth, 1, GL_ALPHA, GL_UNSIGNED_BYTE, mask.scanLine(i)); -#endif - } -} - -int QGLTextureGlyphCache::glyphMargin() const -{ -#if defined(Q_WS_MAC) - return 2; -#elif defined (Q_WS_X11) - return 0; -#else - return m_type == QFontEngineGlyphCache::Raster_RGBMask ? 2 : 0; -#endif -} - extern QImage qt_imageForBrush(int brushStyle, bool invert); ////////////////////////////////// Private Methods ////////////////////////////////////////// @@ -413,14 +164,14 @@ void QGL2PaintEngineExPrivate::setBrush(const QBrush& brush) void QGL2PaintEngineExPrivate::useSimpleShader() { - shaderManager->simpleProgram()->bind(); - shaderManager->setDirty(); + shaderManager->useSimpleProgram(); if (matrixDirty) updateMatrix(); if (simpleShaderMatrixUniformDirty) { - shaderManager->simpleProgram()->setUniformValue("pmvMatrix", pmvMatrix); + const GLuint location = shaderManager->simpleProgram()->uniformLocation("pmvMatrix"); + glUniformMatrix3fv(location, 1, GL_FALSE, (GLfloat*)pmvMatrix); simpleShaderMatrixUniformDirty = false; } } @@ -607,19 +358,28 @@ void QGL2PaintEngineExPrivate::updateMatrix() const GLfloat wfactor = 2.0f / width; const GLfloat hfactor = -2.0f / height; + GLfloat dx = transform.dx(); + GLfloat dy = transform.dy(); + + // Non-integer translates can have strange effects for some rendering operations such as + // anti-aliased text rendering. In such cases, we snap the translate to the pixel grid. + if (snapToPixelGrid && transform.type() == QTransform::TxTranslate) { + // 0.50 needs to rounded down to 0.0 for consistency with raster engine: + dx = ceilf(dx - 0.5f); + dy = ceilf(dy - 0.5f); + } if (addOffset) { - pmvMatrix[2][0] = (wfactor * (transform.dx() + 0.49f)) - transform.m33(); - pmvMatrix[2][1] = (hfactor * (transform.dy() + 0.49f)) + transform.m33(); - } else { - pmvMatrix[2][0] = (wfactor * transform.dx()) - transform.m33(); - pmvMatrix[2][1] = (hfactor * transform.dy()) + transform.m33(); + dx += 0.49f; + dy += 0.49f; } pmvMatrix[0][0] = (wfactor * transform.m11()) - transform.m13(); pmvMatrix[1][0] = (wfactor * transform.m21()) - transform.m23(); + pmvMatrix[2][0] = (wfactor * dx) - transform.m33(); pmvMatrix[0][1] = (hfactor * transform.m12()) + transform.m13(); pmvMatrix[1][1] = (hfactor * transform.m22()) + transform.m23(); + pmvMatrix[2][1] = (hfactor * dy) + transform.m33(); pmvMatrix[0][2] = transform.m13(); pmvMatrix[1][2] = transform.m23(); pmvMatrix[2][2] = transform.m33(); @@ -717,6 +477,11 @@ void QGL2PaintEngineExPrivate::drawTexture(const QGLRect& dest, const QGLRect& s matrixDirty = true; } + if (snapToPixelGrid) { + snapToPixelGrid = false; + matrixDirty = true; + } + if (prepareForDraw(opaque)) shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::ImageTexture), QT_IMAGE_TEXTURE_UNIT); @@ -745,6 +510,10 @@ void QGL2PaintEngineEx::beginNativePainting() QGLContext *ctx = d->ctx; glUseProgram(0); + // Disable all the vertex attribute arrays: + for (int i = 0; i < QT_GL_VERTEX_ARRAY_TRACKED_COUNT; ++i) + glDisableVertexAttribArray(i); + #ifndef QT_OPENGL_ES_2 // be nice to people who mix OpenGL 1.x code with QPainter commands // by setting modelview and projection matrices to mirror the GL 1 @@ -790,6 +559,9 @@ void QGL2PaintEngineExPrivate::resetGLState() glDepthMask(true); glDepthFunc(GL_LESS); glClearDepth(1); + glStencilMask(0xff); + glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP); + glStencilFunc(GL_ALWAYS, 0, 0xff); } void QGL2PaintEngineEx::endNativePainting() @@ -804,37 +576,23 @@ void QGL2PaintEngineExPrivate::transferMode(EngineMode newMode) return; if (mode == TextDrawingMode || mode == ImageDrawingMode || mode == ImageArrayDrawingMode) { - glDisableVertexAttribArray(QT_TEXTURE_COORDS_ATTR); - glDisableVertexAttribArray(QT_VERTEX_COORDS_ATTR); - glDisableVertexAttribArray(QT_OPACITY_ATTR); - lastTextureUsed = GLuint(-1); } if (newMode == TextDrawingMode) { - glEnableVertexAttribArray(QT_VERTEX_COORDS_ATTR); - glEnableVertexAttribArray(QT_TEXTURE_COORDS_ATTR); - - glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, vertexCoordinateArray.data()); - glVertexAttribPointer(QT_TEXTURE_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, textureCoordinateArray.data()); + setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, (GLfloat*)vertexCoordinateArray.data()); + setVertexAttributePointer(QT_TEXTURE_COORDS_ATTR, (GLfloat*)textureCoordinateArray.data()); } if (newMode == ImageDrawingMode) { - glEnableVertexAttribArray(QT_VERTEX_COORDS_ATTR); - glEnableVertexAttribArray(QT_TEXTURE_COORDS_ATTR); - - glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, staticVertexCoordinateArray); - glVertexAttribPointer(QT_TEXTURE_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, staticTextureCoordinateArray); + setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, staticVertexCoordinateArray); + setVertexAttributePointer(QT_TEXTURE_COORDS_ATTR, staticTextureCoordinateArray); } if (newMode == ImageArrayDrawingMode) { - glEnableVertexAttribArray(QT_VERTEX_COORDS_ATTR); - glEnableVertexAttribArray(QT_TEXTURE_COORDS_ATTR); - glEnableVertexAttribArray(QT_OPACITY_ATTR); - - glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, vertexCoordinateArray.data()); - glVertexAttribPointer(QT_TEXTURE_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, textureCoordinateArray.data()); - glVertexAttribPointer(QT_OPACITY_ATTR, 1, GL_FLOAT, GL_FALSE, 0, opacityArray.data()); + setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, (GLfloat*)vertexCoordinateArray.data()); + setVertexAttributePointer(QT_TEXTURE_COORDS_ATTR, (GLfloat*)textureCoordinateArray.data()); + setVertexAttributePointer(QT_OPACITY_ATTR, (GLfloat*)opacityArray.data()); } // This needs to change when we implement high-quality anti-aliasing... @@ -884,6 +642,11 @@ void QGL2PaintEngineExPrivate::fill(const QVectorPath& path) matrixDirty = true; } + if (snapToPixelGrid) { + snapToPixelGrid = false; + matrixDirty = true; + } + // Might need to call updateMatrix to re-calculate inverseScale if (matrixDirty) updateMatrix(); @@ -942,12 +705,11 @@ void QGL2PaintEngineExPrivate::fill(const QVectorPath& path) } prepareForDraw(currentBrush.isOpaque()); - glEnableVertexAttribArray(QT_VERTEX_COORDS_ATTR); #ifdef QT_OPENGL_CACHE_AS_VBOS glBindBuffer(GL_ARRAY_BUFFER, cache->vbo); - glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, false, 0, 0); + setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, 0); #else - glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, false, 0, cache->vertices); + setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, cache->vertices); #endif glDrawArrays(cache->primitiveType, 0, cache->vertexCount); @@ -984,20 +746,11 @@ void QGL2PaintEngineExPrivate::fill(const QVectorPath& path) // Pass when high bit is set, replace stencil value with 0 glStencilFunc(GL_NOTEQUAL, 0, GL_STENCIL_HIGH_BIT); } - prepareForDraw(currentBrush.isOpaque()); - if (inRenderText) - prepareDepthRangeForRenderText(); - // Stencil the brush onto the dest buffer composite(vertexCoordinateArray.boundingRect()); - - if (inRenderText) - restoreDepthRangeForRenderText(); - glStencilMask(0); - updateClipScissorTest(); } } @@ -1036,13 +789,6 @@ void QGL2PaintEngineExPrivate::fillStencilWithVertexArray(const float *data, useSimpleShader(); glEnable(GL_STENCIL_TEST); // For some reason, this has to happen _after_ the simple shader is use()'d -#ifndef QT_OPENGL_ES_2 - if (inRenderText) { - glPushAttrib(GL_ENABLE_BIT); - glDisable(GL_DEPTH_TEST); - } -#endif - if (mode == WindingFillMode) { Q_ASSERT(stops && !count); if (q->state()->clipTestEnabled) { @@ -1083,10 +829,8 @@ void QGL2PaintEngineExPrivate::fillStencilWithVertexArray(const float *data, glStencilMask(GL_STENCIL_HIGH_BIT); #if 0 glStencilOp(GL_KEEP, GL_KEEP, GL_INVERT); // Simply invert the stencil bit - glEnableVertexAttribArray(QT_VERTEX_COORDS_ATTR); - glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, data); + setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, data); glDrawArrays(GL_TRIANGLE_STRIP, 0, count); - glDisableVertexAttribArray(QT_VERTEX_COORDS_ATTR); #else glStencilOp(GL_KEEP, GL_KEEP, GL_REPLACE); @@ -1096,21 +840,13 @@ void QGL2PaintEngineExPrivate::fillStencilWithVertexArray(const float *data, } else { glStencilFunc(GL_ALWAYS, GL_STENCIL_HIGH_BIT, 0xff); } - glEnableVertexAttribArray(QT_VERTEX_COORDS_ATTR); - glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, data); + setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, data); glDrawArrays(GL_TRIANGLE_STRIP, 0, count); - glDisableVertexAttribArray(QT_VERTEX_COORDS_ATTR); #endif } // Enable color writes & disable stencil writes glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE); - -#ifndef QT_OPENGL_ES_2 - if (inRenderText) - glPopAttrib(); -#endif - } /* @@ -1204,7 +940,7 @@ bool QGL2PaintEngineExPrivate::prepareForDraw(bool srcPixelsAreOpaque) updateBrushUniforms(); if (shaderMatrixUniformDirty) { - shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::PmvMatrix), pmvMatrix); + glUniformMatrix3fv(location(QGLEngineShaderManager::PmvMatrix), 1, GL_FALSE, (GLfloat*)pmvMatrix); shaderMatrixUniformDirty = false; } @@ -1218,20 +954,9 @@ bool QGL2PaintEngineExPrivate::prepareForDraw(bool srcPixelsAreOpaque) void QGL2PaintEngineExPrivate::composite(const QGLRect& boundingRect) { - // Setup a vertex array for the bounding rect: - GLfloat rectVerts[] = { - boundingRect.left, boundingRect.top, - boundingRect.left, boundingRect.bottom, - boundingRect.right, boundingRect.bottom, - boundingRect.right, boundingRect.top - }; - - glEnableVertexAttribArray(QT_VERTEX_COORDS_ATTR); - glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, rectVerts); - + setCoords(staticVertexCoordinateArray, boundingRect); + setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, staticVertexCoordinateArray); glDrawArrays(GL_TRIANGLE_FAN, 0, 4); - - glDisableVertexAttribArray(QT_VERTEX_COORDS_ATTR); } // Draws the vertex array as a set of <vertexArrayStops.size()> triangle fans. @@ -1239,8 +964,7 @@ void QGL2PaintEngineExPrivate::drawVertexArrays(const float *data, int *stops, i GLenum primitive) { // Now setup the pointer to the vertex array: - glEnableVertexAttribArray(QT_VERTEX_COORDS_ATTR); - glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, data); + setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, (GLfloat*)data); int previousStop = 0; for (int i=0; i<stopCount; ++i) { @@ -1253,31 +977,6 @@ void QGL2PaintEngineExPrivate::drawVertexArrays(const float *data, int *stops, i glDrawArrays(primitive, previousStop, stop - previousStop); previousStop = stop; } - glDisableVertexAttribArray(QT_VERTEX_COORDS_ATTR); -} - -void QGL2PaintEngineExPrivate::prepareDepthRangeForRenderText() -{ -#ifndef QT_OPENGL_ES_2 - // Get the z translation value from the model view matrix and - // transform it using the ortogonal projection with z-near = 0, - // and z-far = 1, which is used in QGLWidget::renderText() - GLdouble model[4][4]; - glGetDoublev(GL_MODELVIEW_MATRIX, &model[0][0]); - float deviceZ = -2 * model[3][2] - 1; - - glGetFloatv(GL_DEPTH_RANGE, depthRange); - float windowZ = depthRange[0] + (deviceZ + 1) * 0.5 * (depthRange[1] - depthRange[0]); - - glDepthRange(windowZ, windowZ); -#endif -} - -void QGL2PaintEngineExPrivate::restoreDepthRangeForRenderText() -{ -#ifndef QT_OPENGL_ES_2 - glDepthRange(depthRange[0], depthRange[1]); -#endif } /////////////////////////////////// Public Methods ////////////////////////////////////////// @@ -1297,10 +996,7 @@ void QGL2PaintEngineEx::fill(const QVectorPath &path, const QBrush &brush) if (qbrush_style(brush) == Qt::NoBrush) return; - - if (!d->inRenderText) - ensureActive(); - + ensureActive(); d->setBrush(brush); d->fill(path); } @@ -1337,6 +1033,11 @@ void QGL2PaintEngineExPrivate::stroke(const QVectorPath &path, const QPen &pen) matrixDirty = true; } + if (snapToPixelGrid) { + snapToPixelGrid = false; + matrixDirty = true; + } + const Qt::PenStyle penStyle = qpen_style(pen); const QBrush &penBrush = qpen_brush(pen); const bool opaque = penBrush.isOpaque() && s->opacity > 0.99; @@ -1362,8 +1063,7 @@ void QGL2PaintEngineExPrivate::stroke(const QVectorPath &path, const QPen &pen) if (opaque) { prepareForDraw(opaque); - glEnableVertexAttribArray(QT_VERTEX_COORDS_ATTR); - glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, false, 0, stroker.vertices()); + setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, stroker.vertices()); glDrawArrays(GL_TRIANGLE_STRIP, 0, stroker.vertexCount() / 2); // QBrush b(Qt::green); @@ -1371,8 +1071,6 @@ void QGL2PaintEngineExPrivate::stroke(const QVectorPath &path, const QPen &pen) // d->prepareForDraw(true); // glDrawArrays(GL_LINE_STRIP, 0, d->stroker.vertexCount() / 2); - glDisableVertexAttribArray(QT_VERTEX_COORDS_ATTR); - } else { qreal width = qpen_widthf(pen) / 2; if (width == 0) @@ -1518,8 +1216,7 @@ void QGL2PaintEngineEx::drawTextItem(const QPointF &p, const QTextItem &textItem { Q_D(QGL2PaintEngineEx); - if (!d->inRenderText) - ensureActive(); + ensureActive(); QOpenGL2PaintEngineState *s = state(); const QTextItemInt &ti = static_cast<const QTextItemInt &>(textItem); @@ -1538,7 +1235,7 @@ void QGL2PaintEngineEx::drawTextItem(const QPointF &p, const QTextItem &textItem ? QFontEngineGlyphCache::Type(ti.fontEngine->glyphFormat) : d->glyphCacheType; - if (d->inRenderText || txtype > QTransform::TxTranslate) + if (txtype > QTransform::TxTranslate) glyphType = QFontEngineGlyphCache::Raster_A8; if (glyphType == QFontEngineGlyphCache::Raster_RGBMask @@ -1580,8 +1277,6 @@ void QGL2PaintEngineExPrivate::drawCachedGlyphs(const QPointF &p, QFontEngineGly if (cache->width() == 0 || cache->height() == 0) return; - if (inRenderText) - transferMode(BrushDrawingMode); transferMode(TextDrawingMode); int margin = cache->glyphMargin(); @@ -1589,9 +1284,6 @@ void QGL2PaintEngineExPrivate::drawCachedGlyphs(const QPointF &p, QFontEngineGly GLfloat dx = 1.0 / cache->width(); GLfloat dy = 1.0 / cache->height(); - QGLPoint *oldVertexCoordinateDataPtr = vertexCoordinateArray.data(); - QGLPoint *oldTextureCoordinateDataPtr = textureCoordinateArray.data(); - vertexCoordinateArray.clear(); textureCoordinateArray.clear(); @@ -1604,22 +1296,21 @@ void QGL2PaintEngineExPrivate::drawCachedGlyphs(const QPointF &p, QFontEngineGly textureCoordinateArray.addRect(QRectF(c.x*dx, c.y*dy, c.w * dx, c.h * dy)); } - if (vertexCoordinateArray.data() != oldVertexCoordinateDataPtr) - glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, vertexCoordinateArray.data()); - if (textureCoordinateArray.data() != oldTextureCoordinateDataPtr) - glVertexAttribPointer(QT_TEXTURE_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, textureCoordinateArray.data()); + setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, (GLfloat*)vertexCoordinateArray.data()); + setVertexAttributePointer(QT_TEXTURE_COORDS_ATTR, (GLfloat*)textureCoordinateArray.data()); if (addOffset) { addOffset = false; matrixDirty = true; } + if (!snapToPixelGrid) { + snapToPixelGrid = true; + matrixDirty = true; + } QBrush pensBrush = q->state()->pen.brush(); setBrush(pensBrush); - if (inRenderText) - prepareDepthRangeForRenderText(); - if (glyphType == QFontEngineGlyphCache::Raster_RGBMask) { // Subpixel antialiasing without gamma correction @@ -1704,9 +1395,6 @@ void QGL2PaintEngineExPrivate::drawCachedGlyphs(const QPointF &p, QFontEngineGly shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::MaskTexture), QT_MASK_TEXTURE_UNIT); glDrawArrays(GL_TRIANGLES, 0, 6 * glyphs.size()); - - if (inRenderText) - restoreDepthRangeForRenderText(); } void QGL2PaintEngineEx::drawPixmaps(const QDrawPixmaps::Data *drawingData, int dataCount, const QPixmap &pixmap, QDrawPixmaps::DrawingHints hints) @@ -1737,6 +1425,11 @@ void QGL2PaintEngineExPrivate::drawPixmaps(const QDrawPixmaps::Data *drawingData matrixDirty = true; } + if (snapToPixelGrid) { + snapToPixelGrid = false; + matrixDirty = true; + } + bool allOpaque = true; for (int i = 0; i < dataCount; ++i) { @@ -1854,11 +1547,9 @@ bool QGL2PaintEngineEx::begin(QPaintDevice *pdev) d->shaderManager = new QGLEngineShaderManager(d->ctx); - if (!d->inRenderText) { - glDisable(GL_STENCIL_TEST); - glDisable(GL_DEPTH_TEST); - glDisable(GL_SCISSOR_TEST); - } + glDisable(GL_STENCIL_TEST); + glDisable(GL_DEPTH_TEST); + glDisable(GL_SCISSOR_TEST); #if !defined(QT_OPENGL_ES_2) glDisable(GL_MULTISAMPLE); @@ -1868,6 +1559,7 @@ bool QGL2PaintEngineEx::begin(QPaintDevice *pdev) #if !defined(QT_OPENGL_ES_2) #if defined(Q_WS_WIN) + extern Q_GUI_EXPORT bool qt_cleartype_enabled; if (qt_cleartype_enabled) #endif d->glyphCacheType = QFontEngineGlyphCache::Raster_RGBMask; @@ -1935,6 +1627,9 @@ void QGL2PaintEngineEx::ensureActive() glViewport(0, 0, d->width, d->height); d->needsSync = false; d->shaderManager->setDirty(); + d->ctx->d_func()->syncGlState(); + for (int i = 0; i < 3; ++i) + d->vertexAttribPointers[i] = (GLfloat*)-1; // Assume the pointers are clobbered setState(state()); } } @@ -2019,6 +1714,10 @@ void QGL2PaintEngineExPrivate::writeClip(const QVectorPath &path, uint value) addOffset = false; matrixDirty = true; } + if (snapToPixelGrid) { + snapToPixelGrid = false; + matrixDirty = true; + } if (matrixDirty) updateMatrix(); @@ -2298,12 +1997,6 @@ QPainterState *QGL2PaintEngineEx::createState(QPainterState *orig) const return s; } -void QGL2PaintEngineEx::setRenderTextActive(bool active) -{ - Q_D(QGL2PaintEngineEx); - d->inRenderText = active; -} - QOpenGL2PaintEngineState::QOpenGL2PaintEngineState(QOpenGL2PaintEngineState &other) : QPainterState(other) { @@ -2328,5 +2021,3 @@ QOpenGL2PaintEngineState::~QOpenGL2PaintEngineState() } QT_END_NAMESPACE - -#include "qpaintengineex_opengl2.moc" diff --git a/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h b/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h index c94c4f4..ce1b538 100644 --- a/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h +++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h @@ -1,6 +1,6 @@ /**************************************************************************** ** -** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** @@ -73,6 +73,12 @@ enum EngineMode { QT_BEGIN_NAMESPACE +#define GL_STENCIL_HIGH_BIT GLuint(0x80) +#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 QGL2PaintEngineExPrivate; @@ -167,9 +173,9 @@ public: width(0), height(0), ctx(0), useSystemClip(true), + snapToPixelGrid(false), addOffset(false), - inverseScale(1), - inRenderText(false) + inverseScale(1) { } ~QGL2PaintEngineExPrivate(); @@ -190,6 +196,9 @@ public: void drawPixmaps(const QDrawPixmaps::Data *drawingData, int dataCount, const QPixmap &pixmap, QDrawPixmaps::DrawingHints hints); void drawCachedGlyphs(const QPointF &p, QFontEngineGlyphCache::Type glyphType, const QTextItemInt &ti); + // Calls glVertexAttributePointer if the pointer has changed + inline void setVertexAttributePointer(unsigned int arrayIndex, const GLfloat *pointer); + // draws whatever is in the vertex array: void drawVertexArrays(const float *data, int *stops, int stopCount, GLenum primitive); void drawVertexArrays(QGL2PEXVertexArray &vertexArray, GLenum primitive) { @@ -215,10 +224,6 @@ public: return shaderManager->getUniformLocation(uniform); } - - void prepareDepthRangeForRenderText(); - void restoreDepthRangeForRenderText(); - void clearClip(uint value); void writeClip(const QVectorPath &path, uint value); void resetClipIfNeeded(); @@ -266,6 +271,7 @@ public: GLfloat staticVertexCoordinateArray[8]; GLfloat staticTextureCoordinateArray[8]; + bool snapToPixelGrid; bool addOffset; // When enabled, adds a 0.49,0.49 offset to matrix in updateMatrix GLfloat pmvMatrix[3][3]; GLfloat inverseScale; @@ -273,7 +279,6 @@ public: GLuint lastTextureUsed; bool needsSync; - bool inRenderText; bool multisamplingAlwaysEnabled; GLfloat depthRange[2]; @@ -290,8 +295,24 @@ public: QSet<QVectorPath::CacheEntry *> pathCaches; QVector<GLuint> unusedVBOSToClean; + + const GLfloat *vertexAttribPointers[3]; }; + +void QGL2PaintEngineExPrivate::setVertexAttributePointer(unsigned int arrayIndex, const GLfloat *pointer) +{ + Q_ASSERT(arrayIndex < 3); + if (pointer == vertexAttribPointers[arrayIndex]) + return; + + vertexAttribPointers[arrayIndex] = pointer; + if (arrayIndex == QT_OPACITY_ATTR) + glVertexAttribPointer(arrayIndex, 1, GL_FLOAT, GL_FALSE, 0, pointer); + else + glVertexAttribPointer(arrayIndex, 2, GL_FLOAT, GL_FALSE, 0, pointer); +} + QT_END_NAMESPACE #endif diff --git a/src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp b/src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp new file mode 100644 index 0000000..0720170 --- /dev/null +++ b/src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp @@ -0,0 +1,245 @@ +/**************************************************************************** +** +** 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. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qtextureglyphcache_gl_p.h" +#include "qpaintengineex_opengl2_p.h" + +#ifdef Q_WS_WIN +extern Q_GUI_EXPORT bool qt_cleartype_enabled; +#endif + +QGLTextureGlyphCache::QGLTextureGlyphCache(QGLContext *context, QFontEngineGlyphCache::Type type, const QTransform &matrix) + : QTextureGlyphCache(type, matrix) + , ctx(context) + , m_width(0) + , m_height(0) +{ + glGenFramebuffers(1, &m_fbo); + connect(QGLSignalProxy::instance(), SIGNAL(aboutToDestroyContext(const QGLContext*)), + SLOT(contextDestroyed(const QGLContext*))); +} + +QGLTextureGlyphCache::~QGLTextureGlyphCache() +{ + if (ctx) { + QGLShareContextScope scope(ctx); + glDeleteFramebuffers(1, &m_fbo); + + if (m_width || m_height) + glDeleteTextures(1, &m_texture); + } +} + +void QGLTextureGlyphCache::createTextureData(int width, int height) +{ + glGenTextures(1, &m_texture); + glBindTexture(GL_TEXTURE_2D, m_texture); + + m_width = width; + m_height = height; + + QVarLengthArray<uchar> data(width * height); + for (int i = 0; i < data.size(); ++i) + data[i] = 0; + + if (m_type == QFontEngineGlyphCache::Raster_RGBMask) + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_ALPHA, GL_UNSIGNED_BYTE, &data[0]); + else + glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, width, height, 0, GL_ALPHA, GL_UNSIGNED_BYTE, &data[0]); + + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); +} + +void QGLTextureGlyphCache::resizeTextureData(int width, int height) +{ + // ### the QTextureGlyphCache API needs to be reworked to allow + // ### resizeTextureData to fail + + int oldWidth = m_width; + int oldHeight = m_height; + + GLuint oldTexture = m_texture; + createTextureData(width, height); + + glBindFramebuffer(GL_FRAMEBUFFER_EXT, m_fbo); + + GLuint tmp_texture; + glGenTextures(1, &tmp_texture); + glBindTexture(GL_TEXTURE_2D, tmp_texture); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, oldWidth, oldHeight, 0, + GL_RGBA, GL_UNSIGNED_BYTE, NULL); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); + glBindTexture(GL_TEXTURE_2D, 0); + glFramebufferTexture2D(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, + GL_TEXTURE_2D, tmp_texture, 0); + + glActiveTexture(GL_TEXTURE0 + QT_IMAGE_TEXTURE_UNIT); + glBindTexture(GL_TEXTURE_2D, oldTexture); + + pex->transferMode(BrushDrawingMode); + + glDisable(GL_STENCIL_TEST); + glDisable(GL_DEPTH_TEST); + glDisable(GL_SCISSOR_TEST); + glDisable(GL_BLEND); + + glViewport(0, 0, oldWidth, oldHeight); + + GLfloat* vertexCoordinateArray = pex->staticVertexCoordinateArray; + vertexCoordinateArray[0] = -1.0f; + vertexCoordinateArray[1] = -1.0f; + vertexCoordinateArray[2] = 1.0f; + vertexCoordinateArray[3] = -1.0f; + vertexCoordinateArray[4] = 1.0f; + vertexCoordinateArray[5] = 1.0f; + vertexCoordinateArray[6] = -1.0f; + vertexCoordinateArray[7] = 1.0f; + + GLfloat* textureCoordinateArray = pex->staticTextureCoordinateArray; + textureCoordinateArray[0] = 0.0f; + textureCoordinateArray[1] = 0.0f; + textureCoordinateArray[2] = 1.0f; + textureCoordinateArray[3] = 0.0f; + textureCoordinateArray[4] = 1.0f; + textureCoordinateArray[5] = 1.0f; + textureCoordinateArray[6] = 0.0f; + textureCoordinateArray[7] = 1.0f; + + pex->setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, vertexCoordinateArray); + pex->setVertexAttributePointer(QT_TEXTURE_COORDS_ATTR, textureCoordinateArray); + + pex->shaderManager->useBlitProgram(); + pex->shaderManager->blitProgram()->setUniformValue("imageTexture", QT_IMAGE_TEXTURE_UNIT); + + glDrawArrays(GL_TRIANGLE_FAN, 0, 4); + + glBindTexture(GL_TEXTURE_2D, m_texture); + +#ifdef QT_OPENGL_ES_2 + QDataBuffer<uchar> buffer(4*oldWidth*oldHeight); + buffer.resize(4*oldWidth*oldHeight); + glReadPixels(0, 0, oldWidth, oldHeight, GL_RGBA, GL_UNSIGNED_BYTE, buffer.data()); + + // do an in-place conversion from GL_RGBA to GL_ALPHA + for (int i=0; i<oldWidth*oldHeight; ++i) + buffer.data()[i] = buffer.at(4*i + 3); + + glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, oldWidth, oldHeight, + GL_ALPHA, GL_UNSIGNED_BYTE, buffer.data()); +#else + glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, oldWidth, oldHeight); +#endif + + glFramebufferRenderbuffer(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, + GL_RENDERBUFFER_EXT, 0); + glDeleteTextures(1, &tmp_texture); + glDeleteTextures(1, &oldTexture); + + glBindFramebuffer(GL_FRAMEBUFFER_EXT, ctx->d_ptr->current_fbo); + + glViewport(0, 0, pex->width, pex->height); + pex->updateClipScissorTest(); +} + +void QGLTextureGlyphCache::fillTexture(const Coord &c, glyph_t glyph) +{ + QImage mask = textureMapForGlyph(glyph); + const int maskWidth = mask.width(); + const int maskHeight = mask.height(); + + if (mask.format() == QImage::Format_Mono) { + mask = mask.convertToFormat(QImage::Format_Indexed8); + for (int y = 0; y < maskHeight; ++y) { + uchar *src = (uchar *) mask.scanLine(y); + for (int x = 0; x < maskWidth; ++x) + src[x] = -src[x]; // convert 0 and 1 into 0 and 255 + } + } else if (mask.format() == QImage::Format_RGB32) { + // Make the alpha component equal to the average of the RGB values. + // This is needed when drawing sub-pixel antialiased text on translucent targets. + for (int y = 0; y < maskHeight; ++y) { + quint32 *src = (quint32 *) mask.scanLine(y); + for (int x = 0; x < maskWidth; ++x) { + uchar r = src[x] >> 16; + uchar g = src[x] >> 8; + uchar b = src[x]; + quint32 avg = (quint32(r) + quint32(g) + quint32(b) + 1) / 3; // "+1" for rounding. + src[x] = (src[x] & 0x00ffffff) | (avg << 24); + } + } + } + + glBindTexture(GL_TEXTURE_2D, m_texture); + if (mask.format() == QImage::Format_RGB32) { + glTexSubImage2D(GL_TEXTURE_2D, 0, c.x, c.y, maskWidth, maskHeight, GL_BGRA, GL_UNSIGNED_BYTE, mask.bits()); + } else { +#ifdef QT_OPENGL_ES2 + glTexSubImage2D(GL_TEXTURE_2D, 0, c.x, c.y, maskWidth, maskHeight, GL_ALPHA, GL_UNSIGNED_BYTE, mask.bits()); +#else + // glTexSubImage2D() might cause some garbage to appear in the texture if the mask width is + // not a multiple of four bytes. The bug appeared on a computer with 32-bit Windows Vista + // and nVidia GeForce 8500GT. GL_UNPACK_ALIGNMENT is set to four bytes, 'mask' has a + // multiple of four bytes per line, and most of the glyph shows up correctly in the + // texture, which makes me think that this is a driver bug. + // One workaround is to make sure the mask width is a multiple of four bytes, for instance + // by converting it to a format with four bytes per pixel. Another is to copy one line at a + // time. + + for (int i = 0; i < maskHeight; ++i) + glTexSubImage2D(GL_TEXTURE_2D, 0, c.x, c.y + i, maskWidth, 1, GL_ALPHA, GL_UNSIGNED_BYTE, mask.scanLine(i)); +#endif + } +} + +int QGLTextureGlyphCache::glyphMargin() const +{ +#if defined(Q_WS_MAC) + return 2; +#elif defined (Q_WS_X11) + return 0; +#else + return m_type == QFontEngineGlyphCache::Raster_RGBMask ? 2 : 0; +#endif +} diff --git a/src/opengl/gl2paintengineex/qtextureglyphcache_gl_p.h b/src/opengl/gl2paintengineex/qtextureglyphcache_gl_p.h new file mode 100644 index 0000000..393893c --- /dev/null +++ b/src/opengl/gl2paintengineex/qtextureglyphcache_gl_p.h @@ -0,0 +1,123 @@ +/**************************************************************************** +** +** 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 QTEXTUREGLYPHCACHE_GL_P_H +#define QTEXTUREGLYPHCACHE_GL_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists for the convenience +// of the QLibrary class. This header file may change from +// version to version without notice, or even be removed. +// +// We mean it. +// + +#include <private/qtextureglyphcache_p.h> +#include <private/qgl_p.h> +#include <qglshaderprogram.h> + + +QT_BEGIN_NAMESPACE + +class QGL2PaintEngineExPrivate; + +class QGLTextureGlyphCache : public QObject, public QTextureGlyphCache +{ + Q_OBJECT +public: + QGLTextureGlyphCache(QGLContext *context, QFontEngineGlyphCache::Type type, const QTransform &matrix); + ~QGLTextureGlyphCache(); + + virtual void createTextureData(int width, int height); + virtual void resizeTextureData(int width, int height); + virtual void fillTexture(const Coord &c, glyph_t glyph); + virtual int glyphMargin() const; + + inline GLuint texture() const { return m_texture; } + + inline int width() const { return m_width; } + inline int height() const { return m_height; } + + inline void setPaintEnginePrivate(QGL2PaintEngineExPrivate *p) { pex = p; } + + +public Q_SLOTS: + void contextDestroyed(const QGLContext *context) { + if (context == ctx) { + const QGLContext *nextCtx = qt_gl_transfer_context(ctx); + if (!nextCtx) { + // the context may not be current, so we cannot directly + // destroy the fbo and texture here, but since the context + // is about to be destroyed, the GL server will do the + // clean up for us anyway + m_fbo = 0; + m_texture = 0; + ctx = 0; + } else { + // since the context holding the texture is shared, and + // about to be destroyed, we have to transfer ownership + // of the texture to one of the share contexts + ctx = const_cast<QGLContext *>(nextCtx); + } + } + } + +private: + QGLContext *ctx; + + QGL2PaintEngineExPrivate *pex; + + GLuint m_texture; + GLuint m_fbo; + + int m_width; + int m_height; + + QGLShaderProgram *m_program; +}; + +QT_END_NAMESPACE + +#endif + diff --git a/src/opengl/gl2paintengineex/qtriangulatingstroker.cpp b/src/opengl/gl2paintengineex/qtriangulatingstroker.cpp index 395b8a3..5229d3f 100644 --- a/src/opengl/gl2paintengineex/qtriangulatingstroker.cpp +++ b/src/opengl/gl2paintengineex/qtriangulatingstroker.cpp @@ -1,6 +1,6 @@ /**************************************************************************** ** -** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** diff --git a/src/opengl/gl2paintengineex/qtriangulatingstroker_p.h b/src/opengl/gl2paintengineex/qtriangulatingstroker_p.h index 2dba0ce..06b8a44 100644 --- a/src/opengl/gl2paintengineex/qtriangulatingstroker_p.h +++ b/src/opengl/gl2paintengineex/qtriangulatingstroker_p.h @@ -1,6 +1,6 @@ /**************************************************************************** ** -** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** |