diff options
| author | Allan Sandfeld Jensen <allan.jensen@digia.com> | 2014-08-04 11:47:11 +0200 |
|---|---|---|
| committer | Allan Sandfeld Jensen <allan.jensen@theqtcompany.com> | 2014-10-27 11:54:39 +0100 |
| commit | 5adbb9cc576546c42249099e549f1947cca54610 (patch) | |
| tree | 0454a5e9ff21651fe4bc1fac6ab7424914d53a3e /src/gui/opengl/qopenglpaintengine.cpp | |
| parent | da72e5538ebcc7e6008d0c4b3538d2a994f02a7e (diff) | |
Support Alpha8 and Grayscale8 natively in the OpenGL paint engine
Adds special shaders for the Alpha8 and Grayscale8 formats so that
they do not need to rely on the support of GL_ALPHA and GL_LUMINANCE
that has been removed from core in recent OpenGL versions.
Change-Id: Ie370379b458abf2a50e252bc5099aefc1b11fb1d
Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>
Diffstat (limited to 'src/gui/opengl/qopenglpaintengine.cpp')
| -rw-r--r-- | src/gui/opengl/qopenglpaintengine.cpp | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/gui/opengl/qopenglpaintengine.cpp b/src/gui/opengl/qopenglpaintengine.cpp index c490726359..299d3da73d 100644 --- a/src/gui/opengl/qopenglpaintengine.cpp +++ b/src/gui/opengl/qopenglpaintengine.cpp @@ -1421,6 +1421,20 @@ void QOpenGL2PaintEngineEx::drawImage(const QRectF& dest, const QImage& image, c d->shaderManager->setSrcPixelType(QOpenGLEngineShaderManager::NonPremultipliedImageSrc); bindOption = 0; break; + case QImage::Format_Alpha8: + if (ctx->functions()->hasOpenGLFeature(QOpenGLFunctions::TextureRGFormats)) { + d->shaderManager->setSrcPixelType(QOpenGLEngineShaderManager::AlphaImageSrc); + bindOption = QOpenGLTextureCache::UseRedFor8BitBindOption; + } else + d->shaderManager->setSrcPixelType(QOpenGLEngineShaderManager::ImageSrc); + break; + case QImage::Format_Grayscale8: + if (ctx->functions()->hasOpenGLFeature(QOpenGLFunctions::TextureRGFormats)) { + d->shaderManager->setSrcPixelType(QOpenGLEngineShaderManager::GrayscaleImageSrc); + bindOption = QOpenGLTextureCache::UseRedFor8BitBindOption; + } else + d->shaderManager->setSrcPixelType(QOpenGLEngineShaderManager::ImageSrc); + break; default: d->shaderManager->setSrcPixelType(QOpenGLEngineShaderManager::ImageSrc); break; |