diff options
Diffstat (limited to 'src/opengl/qgl.cpp')
-rw-r--r-- | src/opengl/qgl.cpp | 199 |
1 files changed, 122 insertions, 77 deletions
diff --git a/src/opengl/qgl.cpp b/src/opengl/qgl.cpp index 1bd1b91..c3e4a2e 100644 --- a/src/opengl/qgl.cpp +++ b/src/opengl/qgl.cpp @@ -397,8 +397,7 @@ static inline GLint qgluProject(GLdouble objx, GLdouble objy, GLdouble objz, \i \link setDirectRendering() Direct rendering:\endlink Enabled. \i \link setOverlay() Overlay:\endlink Disabled. \i \link setPlane() Plane:\endlink 0 (i.e., normal plane). - \i \link setSampleBuffers() Multisample buffers:\endlink Enabled on - OpenGL/ES 2.0, disabled on other platforms. + \i \link setSampleBuffers() Multisample buffers:\endlink Disabled. \endlist */ @@ -1437,6 +1436,18 @@ void QGLContextGroup::removeGuard(QGLSharedResourceGuard *guard) m_guards = guard->m_next; } +const QGLContext *qt_gl_transfer_context(const QGLContext *ctx) +{ + if (!ctx) + return 0; + QList<const QGLContext *> shares + (QGLContextPrivate::contextGroup(ctx)->shares()); + if (shares.size() >= 2) + return (ctx == shares.at(0)) ? shares.at(1) : shares.at(0); + else + return 0; +} + QGLContextPrivate::~QGLContextPrivate() { if (!group->m_refs.deref()) { @@ -1485,6 +1496,8 @@ void QGLContextPrivate::init(QPaintDevice *dev, const QGLFormat &format) current_fbo = 0; default_fbo = 0; active_engine = 0; + for (int i = 0; i < QT_GL_VERTEX_ARRAY_TRACKED_COUNT; ++i) + vertexAttributeArraysEnabledState[i] = false; } QGLContext* QGLContext::currentCtx = 0; @@ -1730,12 +1743,6 @@ struct DDSFormat { #define GL_GENERATE_MIPMAP_HINT_SGIS 0x8192 #endif -Q_GLOBAL_STATIC(QGLShareRegister, _qgl_share_reg) -Q_OPENGL_EXPORT QGLShareRegister* qgl_share_reg() -{ - return _qgl_share_reg(); -} - /*! \class QGLContext \brief The QGLContext class encapsulates an OpenGL rendering context. @@ -1875,6 +1882,35 @@ void QGLContextPrivate::cleanup() { } +#define ctx q_ptr +void QGLContextPrivate::setVertexAttribArrayEnabled(int arrayIndex, bool enabled) +{ + Q_ASSERT(arrayIndex < QT_GL_VERTEX_ARRAY_TRACKED_COUNT); + Q_ASSERT(glEnableVertexAttribArray); + + if (vertexAttributeArraysEnabledState[arrayIndex] && !enabled) + glDisableVertexAttribArray(arrayIndex); + + if (!vertexAttributeArraysEnabledState[arrayIndex] && enabled) + glEnableVertexAttribArray(arrayIndex); + + vertexAttributeArraysEnabledState[arrayIndex] = enabled; +} + +void QGLContextPrivate::syncGlState() +{ + Q_ASSERT(glEnableVertexAttribArray); + for (int i = 0; i < QT_GL_VERTEX_ARRAY_TRACKED_COUNT; ++i) { + if (vertexAttributeArraysEnabledState[i]) + glEnableVertexAttribArray(i); + else + glDisableVertexAttribArray(i); + } + +} +#undef ctx + + /*! \overload @@ -2064,6 +2100,29 @@ QGLTexture *QGLContextPrivate::bindTexture(const QImage &image, GLenum target, G // #define QGL_BIND_TEXTURE_DEBUG +// map from Qt's ARGB endianness-dependent format to GL's big-endian RGBA layout +static inline void qgl_byteSwapImage(QImage &img, GLenum pixel_type) +{ + const int width = img.width(); + const int height = img.height(); + + if (pixel_type == GL_UNSIGNED_INT_8_8_8_8_REV + || (pixel_type == GL_UNSIGNED_BYTE && QSysInfo::ByteOrder == QSysInfo::LittleEndian)) + { + for (int i = 0; i < height; ++i) { + uint *p = (uint *) img.scanLine(i); + for (int x = 0; x < width; ++x) + p[x] = ((p[x] << 16) & 0xff0000) | ((p[x] >> 16) & 0xff) | (p[x] & 0xff00ff00); + } + } else { + for (int i = 0; i < height; ++i) { + uint *p = (uint *) img.scanLine(i); + for (int x = 0; x < width; ++x) + p[x] = (p[x] << 8) | ((p[x] >> 24) & 0xff); + } + } +} + QGLTexture* QGLContextPrivate::bindTexture(const QImage &image, GLenum target, GLint internalFormat, const qint64 key, QGLContext::BindOptions options) { @@ -2216,23 +2275,7 @@ QGLTexture* QGLContextPrivate::bindTexture(const QImage &image, GLenum target, G // 32 in the switch above is for the RGB16 case, where we set // the format to GL_RGB Q_ASSERT(img.depth() == 32); - const int width = img.width(); - const int height = img.height(); - - if (pixel_type == GL_UNSIGNED_INT_8_8_8_8_REV - || (pixel_type == GL_UNSIGNED_BYTE && QSysInfo::ByteOrder == QSysInfo::LittleEndian)) { - for (int i=0; i < height; ++i) { - uint *p = (uint *) img.scanLine(i); - for (int x=0; x<width; ++x) - p[x] = ((p[x] << 16) & 0xff0000) | ((p[x] >> 16) & 0xff) | (p[x] & 0xff00ff00); - } - } else { - for (int i=0; i < height; ++i) { - uint *p = (uint *) img.scanLine(i); - for (int x=0; x<width; ++x) - p[x] = (p[x] << 8) | ((p[x] >> 24) & 0xff); - } - } + qgl_byteSwapImage(img, pixel_type); } #ifdef QT_OPENGL_ES // OpenGL/ES requires that the internal and external formats be identical. @@ -2948,7 +2991,7 @@ bool QGLContext::create(const QGLContext* shareContext) wd->usesDoubleBufferedGLContext = d->glFormat.doubleBuffer(); } if (d->sharing) // ok, we managed to share - qgl_share_reg()->addShare(this, shareContext); + QGLContextGroup::addShare(this, shareContext); return d->valid; } @@ -3804,6 +3847,11 @@ bool QGLWidget::event(QEvent *e) } #if defined(QT_OPENGL_ES) + // A re-parent is likely to destroy the X11 window and re-create it. It is important + // that we free the EGL surface _before_ the winID changes - otherwise we can leak. + if (e->type() == QEvent::ParentAboutToChange) + d->glcx->d_func()->destroyEglSurfaceForDevice(); + if ((e->type() == QEvent::ParentChange) || (e->type() == QEvent::WindowStateChange)) { // The window may have been re-created during re-parent or state change - if so, the EGL // surface will need to be re-created. @@ -4291,6 +4339,7 @@ static void qt_save_gl_state() glDisable(GL_CULL_FACE); glDisable(GL_LIGHTING); glDisable(GL_STENCIL_TEST); + glDisable(GL_DEPTH_TEST); glEnable(GL_BLEND); glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA); } @@ -4344,6 +4393,10 @@ static void qt_gl_draw_text(QPainter *p, int x, int y, const QString &str, \note This function clears the stencil buffer. \note This function is not supported on OpenGL/ES systems. + + \note This function temporarily disables depth-testing when the + text is drawn. + \l{Overpainting Example}{Overpaint} with QPainter::drawText() instead. */ @@ -4362,9 +4415,9 @@ void QGLWidget::renderText(int x, int y, const QString &str, const QFont &font, int height = d->glcx->device()->height(); bool auto_swap = autoBufferSwap(); + QPaintEngine::Type oldEngineType = qgl_engine_selector()->preferredPaintEngine(); + qgl_engine_selector()->setPreferredPaintEngine(QPaintEngine::OpenGL); QPaintEngine *engine = paintEngine(); - if (engine->type() == QPaintEngine::OpenGL2) - static_cast<QGL2PaintEngineEx *>(engine)->setRenderTextActive(true); QPainter *p; bool reuse_painter = false; if (engine->isActive()) { @@ -4384,11 +4437,6 @@ void QGLWidget::renderText(int x, int y, const QString &str, const QFont &font, setAutoBufferSwap(false); // disable glClear() as a result of QPainter::begin() d->disable_clear_on_painter_begin = true; - if (engine->type() == QPaintEngine::OpenGL2) { - qt_save_gl_state(); - glMatrixMode(GL_MODELVIEW); - glLoadIdentity(); - } p = new QPainter(this); } @@ -4412,11 +4460,8 @@ void QGLWidget::renderText(int x, int y, const QString &str, const QFont &font, delete p; setAutoBufferSwap(auto_swap); d->disable_clear_on_painter_begin = false; - if (engine->type() == QPaintEngine::OpenGL2) - qt_restore_gl_state(); } - if (engine->type() == QPaintEngine::OpenGL2) - static_cast<QGL2PaintEngineEx *>(engine)->setRenderTextActive(false); + qgl_engine_selector()->setPreferredPaintEngine(oldEngineType); #else // QT_OPENGL_ES Q_UNUSED(x); Q_UNUSED(y); @@ -4434,6 +4479,13 @@ void QGLWidget::renderText(int x, int y, const QString &str, const QFont &font, have the labels move with the model as it is rotated etc. \note This function is not supported on OpenGL/ES systems. + + \note If depth testing is enabled before this function is called, + then the drawn text will be depth-tested against the models that + have already been drawn in the scene. Use \c{glDisable(GL_DEPTH_TEST)} + before calling this function to annotate the models without + depth-testing the text. + \l{Overpainting Example}{Overpaint} with QPainter::drawText() instead. */ void QGLWidget::renderText(double x, double y, double z, const QString &str, const QFont &font, int) @@ -4457,9 +4509,9 @@ void QGLWidget::renderText(double x, double y, double z, const QString &str, con &win_x, &win_y, &win_z); win_y = height - win_y; // y is inverted + QPaintEngine::Type oldEngineType = qgl_engine_selector()->preferredPaintEngine(); + qgl_engine_selector()->setPreferredPaintEngine(QPaintEngine::OpenGL); QPaintEngine *engine = paintEngine(); - if (engine->type() == QPaintEngine::OpenGL2) - static_cast<QGL2PaintEngineEx *>(engine)->setRenderTextActive(true); QPainter *p; bool reuse_painter = false; bool use_depth_testing = glIsEnabled(GL_DEPTH_TEST); @@ -4473,8 +4525,6 @@ void QGLWidget::renderText(double x, double y, double z, const QString &str, con setAutoBufferSwap(false); // disable glClear() as a result of QPainter::begin() d->disable_clear_on_painter_begin = true; - if (engine->type() == QPaintEngine::OpenGL2) - qt_save_gl_state(); p = new QPainter(this); } @@ -4503,13 +4553,10 @@ void QGLWidget::renderText(double x, double y, double z, const QString &str, con } else { p->end(); delete p; - if (engine->type() == QPaintEngine::OpenGL2) - qt_restore_gl_state(); setAutoBufferSwap(auto_swap); d->disable_clear_on_painter_begin = false; } - if (engine->type() == QPaintEngine::OpenGL2) - static_cast<QGL2PaintEngineEx *>(engine)->setRenderTextActive(false); + qgl_engine_selector()->setPreferredPaintEngine(oldEngineType); #else // QT_OPENGL_ES Q_UNUSED(x); Q_UNUSED(y); @@ -4823,38 +4870,39 @@ QGLWidget::QGLWidget(QGLContext *context, QWidget *parent, void QGLExtensions::init_extensions() { - QList<QByteArray> extensions = QByteArray(reinterpret_cast<const char *>(glGetString(GL_EXTENSIONS))).split(' '); - if (extensions.contains("GL_ARB_texture_rectangle")) + QGLExtensionMatcher extensions(reinterpret_cast<const char *>(glGetString(GL_EXTENSIONS))); + + if (extensions.match("GL_ARB_texture_rectangle")) glExtensions |= TextureRectangle; - if (extensions.contains("GL_ARB_multisample")) + if (extensions.match("GL_ARB_multisample")) glExtensions |= SampleBuffers; - if (extensions.contains("GL_SGIS_generate_mipmap")) + if (extensions.match("GL_SGIS_generate_mipmap")) glExtensions |= GenerateMipmap; - if (extensions.contains("GL_ARB_texture_compression")) + if (extensions.match("GL_ARB_texture_compression")) glExtensions |= TextureCompression; - if (extensions.contains("GL_EXT_texture_compression_s3tc")) + if (extensions.match("GL_EXT_texture_compression_s3tc")) glExtensions |= DDSTextureCompression; - if (extensions.contains("GL_OES_compressed_ETC1_RGB8_texture")) + if (extensions.match("GL_OES_compressed_ETC1_RGB8_texture")) glExtensions |= ETC1TextureCompression; - if (extensions.contains("GL_IMG_texture_compression_pvrtc")) + if (extensions.match("GL_IMG_texture_compression_pvrtc")) glExtensions |= PVRTCTextureCompression; - if (extensions.contains("GL_ARB_fragment_program")) + if (extensions.match("GL_ARB_fragment_program")) glExtensions |= FragmentProgram; - if (extensions.contains("GL_ARB_fragment_shader")) + if (extensions.match("GL_ARB_fragment_shader")) glExtensions |= FragmentShader; - if (extensions.contains("GL_ARB_texture_mirrored_repeat")) + if (extensions.match("GL_ARB_texture_mirrored_repeat")) glExtensions |= MirroredRepeat; - if (extensions.contains("GL_EXT_framebuffer_object")) + if (extensions.match("GL_EXT_framebuffer_object")) glExtensions |= FramebufferObject; - if (extensions.contains("GL_EXT_stencil_two_side")) + if (extensions.match("GL_EXT_stencil_two_side")) glExtensions |= StencilTwoSide; - if (extensions.contains("GL_EXT_stencil_wrap")) + if (extensions.match("GL_EXT_stencil_wrap")) glExtensions |= StencilWrap; - if (extensions.contains("GL_EXT_packed_depth_stencil")) + if (extensions.match("GL_EXT_packed_depth_stencil")) glExtensions |= PackedDepthStencil; - if (extensions.contains("GL_NV_float_buffer")) + if (extensions.match("GL_NV_float_buffer")) glExtensions |= NVFloatBuffer; - if (extensions.contains("GL_ARB_pixel_buffer_object")) + if (extensions.match("GL_ARB_pixel_buffer_object")) glExtensions |= PixelBufferObject; #if defined(QT_OPENGL_ES_2) glExtensions |= FramebufferObject; @@ -4862,26 +4910,26 @@ void QGLExtensions::init_extensions() glExtensions |= FragmentShader; #endif #if defined(QT_OPENGL_ES_1) || defined(QT_OPENGL_ES_1_CL) - if (extensions.contains("GL_OES_framebuffer_object")) + if (extensions.match("GL_OES_framebuffer_object")) glExtensions |= FramebufferObject; #endif #if defined(QT_OPENGL_ES) - if (extensions.contains("GL_OES_packed_depth_stencil")) + if (extensions.match("GL_OES_packed_depth_stencil")) glExtensions |= PackedDepthStencil; #endif - if (extensions.contains("GL_ARB_framebuffer_object")) { + if (extensions.match("GL_ARB_framebuffer_object")) { // ARB_framebuffer_object also includes EXT_framebuffer_blit. glExtensions |= FramebufferObject; glExtensions |= FramebufferBlit; } - if (extensions.contains("GL_EXT_framebuffer_blit")) + if (extensions.match("GL_EXT_framebuffer_blit")) glExtensions |= FramebufferBlit; - if (extensions.contains("GL_ARB_texture_non_power_of_two")) + if (extensions.match("GL_ARB_texture_non_power_of_two")) glExtensions |= NPOTTextures; - if (extensions.contains("GL_EXT_bgra")) + if (extensions.match("GL_EXT_bgra")) glExtensions |= BGRATextureFormat; } @@ -4929,7 +4977,7 @@ Q_OPENGL_EXPORT const QString qt_gl_library_name() } #endif -void QGLShareRegister::addShare(const QGLContext *context, const QGLContext *share) { +void QGLContextGroup::addShare(const QGLContext *context, const QGLContext *share) { Q_ASSERT(context && share); if (context->d_ptr->group == share->d_ptr->group) return; @@ -4950,11 +4998,7 @@ void QGLShareRegister::addShare(const QGLContext *context, const QGLContext *sha group->m_shares.append(context); } -QList<const QGLContext *> QGLShareRegister::shares(const QGLContext *context) { - return context->d_ptr->group->m_shares; -} - -void QGLShareRegister::removeShare(const QGLContext *context) { +void QGLContextGroup::removeShare(const QGLContext *context) { // Remove the context from the group. QGLContextGroup *group = context->d_ptr->group; if (group->m_shares.isEmpty()) @@ -5363,11 +5407,12 @@ QSize QGLTexture::bindCompressedTexturePVR(const char *buf, int len) // Restore the default pixel alignment for later texture uploads. glPixelStorei(GL_UNPACK_ALIGNMENT, 4); - // Set the invert flag for the texture. + // Set the invert flag for the texture. The "vertical flip" + // flag in PVR is the opposite sense to our sense of inversion. if ((pvrHeader->flags & PVR_VERTICAL_FLIP) != 0) - options |= QGLContext::InvertedYBindOption; - else options &= ~QGLContext::InvertedYBindOption; + else + options |= QGLContext::InvertedYBindOption; return QSize(pvrHeader->width, pvrHeader->height); } |