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Improved X11 visual selection algorithm to match the EGL config

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This commit is contained in:
Jonathan De Wachter 2013-12-30 00:38:28 +01:00
parent ba0555fd1a
commit 59c3c2c0b0
1 changed files with 48 additions and 6 deletions
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52
src/SFML/Window/EglContext.cpp
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@ -88,7 +88,7 @@ m_config (NULL)
m_surface = eglCheck(eglCreatePbufferSurface(m_display, m_config, attrib_list)); m_surface = eglCheck(eglCreatePbufferSurface(m_display, m_config, attrib_list));
// Create the context // Create EGL context
createContext(shared); createContext(shared);
} }
@ -116,10 +116,12 @@ m_config (NULL)
// Get the best EGL config matching the requested video settings // Get the best EGL config matching the requested video settings
m_config = getBestConfig(m_display, bitsPerPixel, settings); m_config = getBestConfig(m_display, bitsPerPixel, settings);
// Create the context // Create EGL context
createContext(shared); createContext(shared);
#ifdef SFML_OS_LINUX #if !defined(SFML_SYSTEM_ANDROID)
// Create EGL surface (except on Android because the window is created
// asynchronously, its activity manager will call it for us)
createSurface((EGLNativeWindowType)owner->getSystemHandle()); createSurface((EGLNativeWindowType)owner->getSystemHandle());
#endif #endif
} }
@ -196,7 +198,7 @@ void EglContext::createContext(EglContext* shared)
else else
toShared = EGL_NO_CONTEXT; toShared = EGL_NO_CONTEXT;
// Create the EGL context // Create EGL context
m_context = eglCheck(eglCreateContext(m_display, m_config, toShared, contextVersion)); m_context = eglCheck(eglCreateContext(m_display, m_config, toShared, contextVersion));
} }
@ -245,9 +247,49 @@ EGLConfig EglContext::getBestConfig(EGLDisplay display, unsigned int bitsPerPixe
#ifdef SFML_SYSTEM_LINUX #ifdef SFML_SYSTEM_LINUX
//////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////
XVisualInfo EglContext::selectBestVisual(::Display* display, unsigned int bitsPerPixel, const ContextSettings& settings) XVisualInfo EglContext::selectBestVisual(::Display* XDisplay, unsigned int bitsPerPixel, const ContextSettings& settings)
{ {
// Get the intialized EGL display
EGLDisplay display = getInitializedDisplay();
// Get the best EGL config matching the default video settings
EGLConfig config = getBestConfig(display, bitsPerPixel, settings);
// Retrieve the visual id associated with this EGL config
EGLint nativeVisualId, nativeVisualType;
eglCheck(eglGetConfigAttrib(display, config, EGL_NATIVE_VISUAL_ID, &nativeVisualId));
eglCheck(eglGetConfigAttrib(display, config, EGL_NATIVE_VISUAL_TYPE, &nativeVisualType));
if (nativeVisualId = 0 && nativeVisualType == EGL_NONE)
{
// Should never happen...
err() << "No EGL visual found. You should check your graphics driver" << std::endl;
return XVisualInfo(); return XVisualInfo();
}
VisualID visualId = static_cast<VisualID>(nativeVisualId);
// Get X11 visuals compatible with this EGL config
XVisualInfo *availableVisuals, bestVisual;
int visualCount = 0;
availableVisuals = XGetVisualInfo(XDisplayy, VisualIDMask, &visualId, &visualCount);
if (visualCount == 0)
{
// Can't happen...
err() << "No X11 visual found. Bug in your EGL implementation ?" << std::endl;
return XVisualInfo();
}
// Pick up the best one
bestVisual = availableVisuals[0]
XFree(chosenVisualInfo);
return bestVisual;
} }
#endif #endif