diff options
Diffstat (limited to 'src/plugins/platforms/windows/qwindowsglcontext.cpp')
| -rw-r--r-- | src/plugins/platforms/windows/qwindowsglcontext.cpp | 72 |
1 files changed, 54 insertions, 18 deletions
diff --git a/src/plugins/platforms/windows/qwindowsglcontext.cpp b/src/plugins/platforms/windows/qwindowsglcontext.cpp index 751807e897..78368d87de 100644 --- a/src/plugins/platforms/windows/qwindowsglcontext.cpp +++ b/src/plugins/platforms/windows/qwindowsglcontext.cpp @@ -145,6 +145,10 @@ #define RESET_NOTIFICATION_STRATEGY_ARB 0x8256 #define LOSE_CONTEXT_ON_RESET_ARB 0x8252 +#ifndef WGL_FRAMEBUFFER_SRGB_CAPABLE_EXT +#define WGL_FRAMEBUFFER_SRGB_CAPABLE_EXT 0x20A9 +#endif + QT_BEGIN_NAMESPACE QWindowsOpengl32DLL QOpenGLStaticContext::opengl32; @@ -489,7 +493,7 @@ static int choosePixelFormat(HDC hdc, const QWindowsOpenGLAdditionalFormat &additional, PIXELFORMATDESCRIPTOR *obtainedPfd) { - enum { attribSize =40 }; + enum { attribSize = 42 }; if ((additional.formatFlags & QWindowsGLRenderToPixmap) || !staticContext.hasExtensions()) return 0; @@ -570,7 +574,15 @@ static int choosePixelFormat(HDC hdc, iAttributes[i++] = WGL_SAMPLE_BUFFERS_ARB; iAttributes[i++] = FALSE; } - // If sample buffer request cannot be satisfied, reduce request. + // must be the last + bool srgbRequested = format.colorSpace() == QSurfaceFormat::sRGBColorSpace; + int srgbValuePosition = 0; + if (srgbRequested) { + srgbValuePosition = i; + iAttributes[i++] = WGL_FRAMEBUFFER_SRGB_CAPABLE_EXT; + iAttributes[i++] = TRUE; + } + // If sample or sRGB request cannot be satisfied, reduce request. int pixelFormat = 0; uint numFormats = 0; while (true) { @@ -578,20 +590,25 @@ static int choosePixelFormat(HDC hdc, staticContext.wglChoosePixelFormatARB(hdc, iAttributes, 0, 1, &pixelFormat, &numFormats) && numFormats >= 1; - if (valid || !sampleBuffersRequested) - break; - if (iAttributes[samplesValuePosition] > 1) { - iAttributes[samplesValuePosition] /= 2; - } else if (iAttributes[samplesValuePosition] == 1) { - // Fallback in case it is unable to initialize with any - // samples to avoid falling back to the GDI path - // NB: The sample attributes needs to be at the end for this - // to work correctly - iAttributes[samplesValuePosition - 1] = FALSE; - iAttributes[samplesValuePosition] = 0; - iAttributes[samplesValuePosition + 1] = 0; - } else { + if (valid || (!sampleBuffersRequested && !srgbRequested)) break; + if (srgbRequested) { + iAttributes[srgbValuePosition] = 0; + srgbRequested = false; + } else if (sampleBuffersRequested) { + if (iAttributes[samplesValuePosition] > 1) { + iAttributes[samplesValuePosition] /= 2; + } else if (iAttributes[samplesValuePosition] == 1) { + // Fallback in case it is unable to initialize with any + // samples to avoid falling back to the GDI path + // NB: The sample attributes needs to be at the end for this + // to work correctly + iAttributes[samplesValuePosition - 1] = FALSE; + iAttributes[samplesValuePosition] = 0; + iAttributes[samplesValuePosition + 1] = 0; + } else { + break; + } } } // Verify if format is acceptable. Note that the returned @@ -628,7 +645,7 @@ static QSurfaceFormat HDC hdc, int pixelFormat, QWindowsOpenGLAdditionalFormat *additionalIn = 0) { - enum { attribSize =40 }; + enum { attribSize = 42 }; QSurfaceFormat result; result.setRenderableType(QSurfaceFormat::OpenGL); @@ -641,6 +658,7 @@ static QSurfaceFormat int i = 0; const bool hasSampleBuffers = testFlag(staticContext.extensions, QOpenGLStaticContext::SampleBuffers); + const bool hasSrgbSupport = testFlag(staticContext.extensions, QOpenGLStaticContext::sRGBCapableFramebuffer); iAttributes[i++] = WGL_DOUBLE_BUFFER_ARB; // 0 iAttributes[i++] = WGL_DEPTH_BITS_ARB; // 1 @@ -658,6 +676,9 @@ static QSurfaceFormat iAttributes[i++] = WGL_SAMPLE_BUFFERS_ARB; // 12 iAttributes[i++] = WGL_SAMPLES_ARB; // 13 } + if (hasSrgbSupport) + iAttributes[i++] = WGL_FRAMEBUFFER_SRGB_CAPABLE_EXT; // 12 or 14 + if (!staticContext.wglGetPixelFormatAttribIVARB(hdc, pixelFormat, 0, i, iAttributes, iValues)) { qErrnoWarning("%s: wglGetPixelFormatAttribIVARB() failed for basic parameters.", __FUNCTION__); @@ -673,8 +694,14 @@ static QSurfaceFormat if (iValues[9]) result.setOption(QSurfaceFormat::StereoBuffers); - if (hasSampleBuffers) + if (hasSampleBuffers) { result.setSamples(iValues[13]); + if (hasSrgbSupport && iValues[14]) + result.setColorSpace(QSurfaceFormat::sRGBColorSpace); + } else { + if (hasSrgbSupport && iValues[12]) + result.setColorSpace(QSurfaceFormat::sRGBColorSpace); + } if (additionalIn) { if (iValues[7]) additionalIn->formatFlags |= QWindowsGLAccumBuffer; @@ -947,7 +974,8 @@ QOpenGLStaticContext::QOpenGLStaticContext() : wglChoosePixelFormatARB((WglChoosePixelFormatARB)QOpenGLStaticContext::opengl32.wglGetProcAddress("wglChoosePixelFormatARB")), wglCreateContextAttribsARB((WglCreateContextAttribsARB)QOpenGLStaticContext::opengl32.wglGetProcAddress("wglCreateContextAttribsARB")), wglSwapInternalExt((WglSwapInternalExt)QOpenGLStaticContext::opengl32.wglGetProcAddress("wglSwapIntervalEXT")), - wglGetSwapInternalExt((WglGetSwapInternalExt)QOpenGLStaticContext::opengl32.wglGetProcAddress("wglGetSwapIntervalEXT")) + wglGetSwapInternalExt((WglGetSwapInternalExt)QOpenGLStaticContext::opengl32.wglGetProcAddress("wglGetSwapIntervalEXT")), + wglGetExtensionsStringARB((WglGetExtensionsStringARB)QOpenGLStaticContext::opengl32.wglGetProcAddress("wglGetExtensionsStringARB")) { if (extensionNames.startsWith(SAMPLE_BUFFER_EXTENSION " ") || extensionNames.indexOf(" " SAMPLE_BUFFER_EXTENSION " ") != -1) @@ -1091,6 +1119,14 @@ QWindowsGLContext::QWindowsGLContext(QOpenGLStaticContext *staticContext, && !(QWindowsIntegration::instance()->options() & QWindowsIntegration::DisableArb); QWindowsOpenGLAdditionalFormat obtainedAdditional; if (tryExtensions) { + if (m_staticContext->wglGetExtensionsStringARB) { + const char *exts = m_staticContext->wglGetExtensionsStringARB(hdc); + if (exts) { + qCDebug(lcQpaGl) << __FUNCTION__ << "WGL extensions:" << exts; + if (strstr(exts, "WGL_EXT_framebuffer_sRGB")) + m_staticContext->extensions |= QOpenGLStaticContext::sRGBCapableFramebuffer; + } + } m_pixelFormat = ARB::choosePixelFormat(hdc, *m_staticContext, format, requestedAdditional, &m_obtainedPixelFormatDescriptor); |