diff options
Diffstat (limited to 'src/opengl')
| -rw-r--r-- | src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp | 31 | ||||
| -rw-r--r-- | src/opengl/qgl.cpp | 7 | ||||
| -rw-r--r-- | src/opengl/qgl_p.h | 3 | ||||
| -rw-r--r-- | src/opengl/qglextensions_p.h | 8 |
4 files changed, 46 insertions, 3 deletions
diff --git a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp index a2707e0..38bd58d 100644 --- a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp +++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp @@ -1554,6 +1554,14 @@ namespace { } +#if defined(Q_WS_WIN) +static bool fontSmoothingApproximately(qreal target) +{ + extern Q_GUI_EXPORT qreal qt_fontsmoothing_gamma; // qapplication_win.cpp + return (qAbs(qt_fontsmoothing_gamma - target) < 0.2); +} +#endif + // #define QT_OPENGL_DRAWCACHEDGLYPHS_INDEX_ARRAY_VBO void QGL2PaintEngineExPrivate::drawCachedGlyphs(QFontEngineGlyphCache::Type glyphType, @@ -1792,7 +1800,6 @@ void QGL2PaintEngineExPrivate::drawCachedGlyphs(QFontEngineGlyphCache::Type glyp shaderManager->setMaskType(QGLEngineShaderManager::PixelMask); prepareForDraw(false); // Text always causes src pixels to be transparent } - //### TODO: Gamma correction QGLTextureGlyphCache::FilterMode filterMode = (s->matrix.type() > QTransform::TxTranslate)?QGLTextureGlyphCache::Linear:QGLTextureGlyphCache::Nearest; if (lastMaskTextureUsed != cache->texture() || cache->filterMode() != filterMode) { @@ -1815,12 +1822,31 @@ void QGL2PaintEngineExPrivate::drawCachedGlyphs(QFontEngineGlyphCache::Type glyp } } + bool srgbFrameBufferEnabled = false; + if (ctx->d_ptr->extension_flags & QGLExtensions::SRGBFrameBuffer) { +#if defined(Q_WS_MAC) + if (glyphType == QFontEngineGlyphCache::Raster_RGBMask) +#elif defined(Q_WS_WIN) + if (glyphType != QFontEngineGlyphCache::Raster_RGBMask || fontSmoothingApproximately(2.1)) +#else + if (false) +#endif + { + glEnable(FRAMEBUFFER_SRGB_EXT); + srgbFrameBufferEnabled = true; + } + } + #if defined(QT_OPENGL_DRAWCACHEDGLYPHS_INDEX_ARRAY_VBO) glDrawElements(GL_TRIANGLE_STRIP, 6 * numGlyphs, GL_UNSIGNED_SHORT, 0); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); #else glDrawElements(GL_TRIANGLE_STRIP, 6 * numGlyphs, GL_UNSIGNED_SHORT, elementIndices.data()); #endif + + if (srgbFrameBufferEnabled) + glDisable(FRAMEBUFFER_SRGB_EXT); + } void QGL2PaintEngineEx::drawPixmapFragments(const QPainter::PixmapFragment *fragments, int fragmentCount, const QPixmap &pixmap, @@ -1992,7 +2018,8 @@ bool QGL2PaintEngineEx::begin(QPaintDevice *pdev) #if !defined(QT_OPENGL_ES_2) #if defined(Q_WS_WIN) - if (qt_cleartype_enabled) + if (qt_cleartype_enabled + && (fontSmoothingApproximately(1.0) || fontSmoothingApproximately(2.1))) #endif #if defined(Q_WS_MAC) if (qt_applefontsmoothing_enabled) diff --git a/src/opengl/qgl.cpp b/src/opengl/qgl.cpp index 057fb55..099cc00 100644 --- a/src/opengl/qgl.cpp +++ b/src/opengl/qgl.cpp @@ -5490,6 +5490,13 @@ QGLExtensions::Extensions QGLExtensions::currentContextExtensions() if (extensions.match("GL_EXT_bgra")) glExtensions |= BGRATextureFormat; + { + GLboolean srgbCapableFramebuffers; + glGetBooleanv(FRAMEBUFFER_SRGB_CAPABLE_EXT, &srgbCapableFramebuffers); + if (srgbCapableFramebuffers) + glExtensions |= SRGBFrameBuffer; + } + return glExtensions; } diff --git a/src/opengl/qgl_p.h b/src/opengl/qgl_p.h index 50d13c9..ac54e2f 100644 --- a/src/opengl/qgl_p.h +++ b/src/opengl/qgl_p.h @@ -288,7 +288,8 @@ public: PVRTCTextureCompression = 0x00020000, FragmentShader = 0x00040000, ElementIndexUint = 0x00080000, - Depth24 = 0x00100000 + Depth24 = 0x00100000, + SRGBFrameBuffer = 0x00200000 }; Q_DECLARE_FLAGS(Extensions, Extension) diff --git a/src/opengl/qglextensions_p.h b/src/opengl/qglextensions_p.h index 529c7a1..ac80ce8 100644 --- a/src/opengl/qglextensions_p.h +++ b/src/opengl/qglextensions_p.h @@ -477,6 +477,14 @@ struct QGLExtensionFuncs // OpenGL constants +#ifndef FRAMEBUFFER_SRGB_CAPABLE_EXT +#define FRAMEBUFFER_SRGB_CAPABLE_EXT 0x8DBA +#endif + +#ifndef FRAMEBUFFER_SRGB_EXT +#define FRAMEBUFFER_SRGB_EXT 0x8DB9 +#endif + #ifndef GL_ARRAY_BUFFER #define GL_ARRAY_BUFFER 0x8892 #endif |