diff options
Diffstat (limited to 'src/platformsupport/platformcompositor/qopenglcompositor.cpp')
-rw-r--r-- | src/platformsupport/platformcompositor/qopenglcompositor.cpp | 31 |
1 files changed, 27 insertions, 4 deletions
diff --git a/src/platformsupport/platformcompositor/qopenglcompositor.cpp b/src/platformsupport/platformcompositor/qopenglcompositor.cpp index 3fd6c999a2..2e386532e2 100644 --- a/src/platformsupport/platformcompositor/qopenglcompositor.cpp +++ b/src/platformsupport/platformcompositor/qopenglcompositor.cpp @@ -169,6 +169,29 @@ struct BlendStateBinder bool m_blend; }; +static inline QRect toBottomLeftRect(const QRect &topLeftRect, int windowHeight) +{ + return QRect(topLeftRect.x(), windowHeight - topLeftRect.bottomRight().y() - 1, + topLeftRect.width(), topLeftRect.height()); +} + +static void clippedBlit(const QPlatformTextureList *textures, int idx, const QRect &targetWindowRect, QOpenGLTextureBlitter *blitter) +{ + const QRect rectInWindow = textures->geometry(idx); + QRect clipRect = textures->clipRect(idx); + if (clipRect.isEmpty()) + clipRect = QRect(QPoint(0, 0), rectInWindow.size()); + + const QRect clippedRectInWindow = rectInWindow & clipRect.translated(rectInWindow.topLeft()); + const QRect srcRect = toBottomLeftRect(clipRect, rectInWindow.height()); + + const QMatrix4x4 target = QOpenGLTextureBlitter::targetTransform(clippedRectInWindow, targetWindowRect); + const QMatrix3x3 source = QOpenGLTextureBlitter::sourceTransform(srcRect, rectInWindow.size(), + QOpenGLTextureBlitter::OriginBottomLeft); + + blitter->blit(textures->textureId(idx), target, source); +} + void QOpenGLCompositor::render(QOpenGLCompositorWindow *window) { const QPlatformTextureList *textures = window->textures(); @@ -181,7 +204,6 @@ void QOpenGLCompositor::render(QOpenGLCompositorWindow *window) for (int i = 0; i < textures->count(); ++i) { uint textureId = textures->textureId(i); - QMatrix4x4 target = QOpenGLTextureBlitter::targetTransform(textures->geometry(i), targetWindowRect); const float opacity = window->sourceWindow()->opacity(); if (opacity != currentOpacity) { currentOpacity = opacity; @@ -191,24 +213,25 @@ void QOpenGLCompositor::render(QOpenGLCompositorWindow *window) if (textures->count() > 1 && i == textures->count() - 1) { // Backingstore for a widget with QOpenGLWidget subwidgets blend.set(true); + const QMatrix4x4 target = QOpenGLTextureBlitter::targetTransform(textures->geometry(i), targetWindowRect); m_blitter.blit(textureId, target, QOpenGLTextureBlitter::OriginTopLeft); } else if (textures->count() == 1) { // A regular QWidget window const bool translucent = window->sourceWindow()->requestedFormat().alphaBufferSize() > 0; blend.set(translucent); + const QMatrix4x4 target = QOpenGLTextureBlitter::targetTransform(textures->geometry(i), targetWindowRect); m_blitter.blit(textureId, target, QOpenGLTextureBlitter::OriginTopLeft); } else if (!textures->flags(i).testFlag(QPlatformTextureList::StacksOnTop)) { // Texture from an FBO belonging to a QOpenGLWidget blend.set(false); - m_blitter.blit(textureId, target, QOpenGLTextureBlitter::OriginBottomLeft); + clippedBlit(textures, i, targetWindowRect, &m_blitter); } } for (int i = 0; i < textures->count(); ++i) { if (textures->flags(i).testFlag(QPlatformTextureList::StacksOnTop)) { - QMatrix4x4 target = QOpenGLTextureBlitter::targetTransform(textures->geometry(i), targetWindowRect); blend.set(true); - m_blitter.blit(textures->textureId(i), target, QOpenGLTextureBlitter::OriginBottomLeft); + clippedBlit(textures, i, targetWindowRect, &m_blitter); } } |