// Return a list of available and usable framebuffer configs
//
static GLboolean chooseFBConfig(const _GLFWfbconfig* desired, GLXFBConfig* result)
{
GLXFBConfig* nativeConfigs;
_GLFWfbconfig* usableConfigs;
const _GLFWfbconfig* closest;
int i, nativeCount, usableCount;
const char* vendor;
GLboolean trustWindowBit = GL_TRUE;
vendor = glXGetClientString(_glfw.x11.display, GLX_VENDOR);
if (strcmp(vendor, "Chromium") == 0)
{
// HACK: This is a (hopefully temporary) workaround for Chromium
// (VirtualBox GL) not setting the window bit on any GLXFBConfigs
trustWindowBit = GL_FALSE;
}
if (_glfw.glx.SGIX_fbconfig)
{
nativeConfigs = _glfw.glx.ChooseFBConfigSGIX(_glfw.x11.display,
_glfw.x11.screen,
NULL,
&nativeCount);
}
else
{
nativeConfigs = glXGetFBConfigs(_glfw.x11.display,
_glfw.x11.screen,
&nativeCount);
}
if (!nativeCount)
{
_glfwInputError(GLFW_API_UNAVAILABLE,
"GLX: No GLXFBConfigs returned");
return GL_FALSE;
}
usableConfigs = calloc(nativeCount, sizeof(_GLFWfbconfig));
usableCount = 0;
for (i = 0; i < nativeCount; i++)
{
const GLXFBConfig n = nativeConfigs[i];
_GLFWfbconfig* u = usableConfigs + usableCount;
if (!getFBConfigAttrib(n, GLX_DOUBLEBUFFER) ||
!getFBConfigAttrib(n, GLX_VISUAL_ID))
{
// Only consider double-buffered GLXFBConfigs with associated visuals
continue;
}
if (!(getFBConfigAttrib(n, GLX_RENDER_TYPE) & GLX_RGBA_BIT))
{
// Only consider RGBA GLXFBConfigs
continue;
}
if (!(getFBConfigAttrib(n, GLX_DRAWABLE_TYPE) & GLX_WINDOW_BIT))
{
if (trustWindowBit)
{
// Only consider window GLXFBConfigs
continue;
}
}
u->redBits = getFBConfigAttrib(n, GLX_RED_SIZE);
u->greenBits = getFBConfigAttrib(n, GLX_GREEN_SIZE);
u->blueBits = getFBConfigAttrib(n, GLX_BLUE_SIZE);
u->alphaBits = getFBConfigAttrib(n, GLX_ALPHA_SIZE);
u->depthBits = getFBConfigAttrib(n, GLX_DEPTH_SIZE);
u->stencilBits = getFBConfigAttrib(n, GLX_STENCIL_SIZE);
u->accumRedBits = getFBConfigAttrib(n, GLX_ACCUM_RED_SIZE);
u->accumGreenBits = getFBConfigAttrib(n, GLX_ACCUM_GREEN_SIZE);
u->accumBlueBits = getFBConfigAttrib(n, GLX_ACCUM_BLUE_SIZE);
u->accumAlphaBits = getFBConfigAttrib(n, GLX_ACCUM_ALPHA_SIZE);
u->auxBuffers = getFBConfigAttrib(n, GLX_AUX_BUFFERS);
u->stereo = getFBConfigAttrib(n, GLX_STEREO);
if (_glfw.glx.ARB_multisample)
u->samples = getFBConfigAttrib(n, GLX_SAMPLES);
if (_glfw.glx.ARB_framebuffer_sRGB)
u->sRGB = getFBConfigAttrib(n, GLX_FRAMEBUFFER_SRGB_CAPABLE_ARB);
u->glx = n;
usableCount++;
}
closest = _glfwChooseFBConfig(desired, usableConfigs, usableCount);
if (closest)
*result = closest->glx;
XFree(nativeConfigs);
free(usableConfigs);
return closest ? GL_TRUE : GL_FALSE;
}
static _GLFWfbconfig* getFBConfigs(_GLFWwindow* window, unsigned int* found)
{
GLXFBConfig* fbconfigs;
_GLFWfbconfig* result;
int i, count = 0;
const char* vendor;
GLboolean trustWindowBit = GL_TRUE;
*found = 0;
if (_glfwLibrary.GLX.majorVersion == 1 && _glfwLibrary.GLX.minorVersion < 3)
{
if (!_glfwLibrary.GLX.SGIX_fbconfig)
{
_glfwSetError(GLFW_API_UNAVAILABLE,
"GLX: GLXFBConfig support not found");
return NULL;
}
}
vendor = glXGetClientString(_glfwLibrary.X11.display, GLX_VENDOR);
if (strcmp(vendor, "Chromium") == 0)
{
// HACK: This is a (hopefully temporary) workaround for Chromium
// (VirtualBox GL) not setting the window bit on any GLXFBConfigs
trustWindowBit = GL_FALSE;
}
if (_glfwLibrary.GLX.SGIX_fbconfig)
{
fbconfigs = _glfwLibrary.GLX.ChooseFBConfigSGIX(_glfwLibrary.X11.display,
_glfwLibrary.X11.screen,
NULL,
&count);
if (!count)
{
_glfwSetError(GLFW_API_UNAVAILABLE,
"GLX: No GLXFBConfigs returned");
return NULL;
}
}
else
{
fbconfigs = glXGetFBConfigs(_glfwLibrary.X11.display,
_glfwLibrary.X11.screen,
&count);
if (!count)
{
_glfwSetError(GLFW_API_UNAVAILABLE,
"GLX: No GLXFBConfigs returned");
return NULL;
}
}
result = (_GLFWfbconfig*) malloc(sizeof(_GLFWfbconfig) * count);
if (!result)
{
_glfwSetError(GLFW_OUT_OF_MEMORY, NULL);
return NULL;
}
for (i = 0; i < count; i++)
{
_GLFWfbconfig* f = result + *found;
if (!getFBConfigAttrib(window, fbconfigs[i], GLX_DOUBLEBUFFER) ||
!getFBConfigAttrib(window, fbconfigs[i], GLX_VISUAL_ID))
{
// Only consider double-buffered GLXFBConfigs with associated visuals
continue;
}
if (!(getFBConfigAttrib(window,
fbconfigs[i],
GLX_RENDER_TYPE) & GLX_RGBA_BIT))
{
// Only consider RGBA GLXFBConfigs
continue;
}
if (!(getFBConfigAttrib(window, fbconfigs[i], GLX_DRAWABLE_TYPE) & GLX_WINDOW_BIT))
{
if (trustWindowBit)
{
// Only consider window GLXFBConfigs
continue;
}
}
f->redBits = getFBConfigAttrib(window, fbconfigs[i], GLX_RED_SIZE);
f->greenBits = getFBConfigAttrib(window, fbconfigs[i], GLX_GREEN_SIZE);
f->blueBits = getFBConfigAttrib(window, fbconfigs[i], GLX_BLUE_SIZE);
f->alphaBits = getFBConfigAttrib(window, fbconfigs[i], GLX_ALPHA_SIZE);
f->depthBits = getFBConfigAttrib(window, fbconfigs[i], GLX_DEPTH_SIZE);
f->stencilBits = getFBConfigAttrib(window, fbconfigs[i], GLX_STENCIL_SIZE);
f->accumRedBits = getFBConfigAttrib(window, fbconfigs[i], GLX_ACCUM_RED_SIZE);
f->accumGreenBits = getFBConfigAttrib(window, fbconfigs[i], GLX_ACCUM_GREEN_SIZE);
f->accumBlueBits = getFBConfigAttrib(window, fbconfigs[i], GLX_ACCUM_BLUE_SIZE);
f->accumAlphaBits = getFBConfigAttrib(window, fbconfigs[i], GLX_ACCUM_ALPHA_SIZE);
f->auxBuffers = getFBConfigAttrib(window, fbconfigs[i], GLX_AUX_BUFFERS);
f->stereo = getFBConfigAttrib(window, fbconfigs[i], GLX_STEREO);
if (_glfwLibrary.GLX.ARB_multisample)
f->samples = getFBConfigAttrib(window, fbconfigs[i], GLX_SAMPLES);
else
f->samples = 0;
if (_glfwLibrary.GLX.ARB_framebuffer_sRGB)
f->sRGB = getFBConfigAttrib(window, fbconfigs[i], GLX_FRAMEBUFFER_SRGB_CAPABLE_ARB);
else
f->sRGB = GL_FALSE;
f->platformID = (GLFWintptr) getFBConfigAttrib(window, fbconfigs[i], GLX_FBCONFIG_ID);
(*found)++;
}
XFree(fbconfigs);
return result;
}
// Return a list of available and usable framebuffer configs
//
static GLFWbool chooseFBConfig(
const _GLFWfbconfig* desired,
GLXFBConfig* result,
GLFWbool findTransparent)
{
GLXFBConfig* nativeConfigs;
_GLFWfbconfig* usableConfigs;
const _GLFWfbconfig* closest;
int i, nativeCount, usableCount;
const char* vendor;
GLFWbool trustWindowBit = GLFW_TRUE;
if ( !(_glfw.xrender.major || _glfw.xrender.minor) ) {
findTransparent = GLFW_FALSE;
}
// HACK: This is a (hopefully temporary) workaround for Chromium
// (VirtualBox GL) not setting the window bit on any GLXFBConfigs
vendor = glXGetClientString(_glfw.x11.display, GLX_VENDOR);
if (strcmp(vendor, "Chromium") == 0)
trustWindowBit = GLFW_FALSE;
nativeConfigs =
glXGetFBConfigs(_glfw.x11.display, _glfw.x11.screen, &nativeCount);
if (!nativeCount)
{
_glfwInputError(GLFW_API_UNAVAILABLE, "GLX: No GLXFBConfigs returned");
return GLFW_FALSE;
}
usableConfigs = calloc(nativeCount, sizeof(_GLFWfbconfig));
usableCount = 0;
selectionloop:
for (i = 0; i < nativeCount; i++)
{
const GLXFBConfig n = nativeConfigs[i];
_GLFWfbconfig* u = usableConfigs + usableCount;
// Only consider RGBA GLXFBConfigs
if (!(getFBConfigAttrib(n, GLX_RENDER_TYPE) & GLX_RGBA_BIT))
continue;
// Only consider window GLXFBConfigs
if (!(getFBConfigAttrib(n, GLX_DRAWABLE_TYPE) & GLX_WINDOW_BIT))
{
if (trustWindowBit)
continue;
}
if( findTransparent ) {
XVisualInfo *visualinfo;
XRenderPictFormat *pictFormat;
visualinfo = glXGetVisualFromFBConfig(_glfw.x11.display, n);
if (!visualinfo)
continue;
pictFormat = XRenderFindVisualFormat(_glfw.x11.display, visualinfo->visual);
if( !pictFormat ) {
XFree( visualinfo );
continue;
}
if( !pictFormat->direct.alphaMask ) {
XFree( visualinfo );
continue;
}
XFree( visualinfo );
}
u->redBits = getFBConfigAttrib(n, GLX_RED_SIZE);
u->greenBits = getFBConfigAttrib(n, GLX_GREEN_SIZE);
u->blueBits = getFBConfigAttrib(n, GLX_BLUE_SIZE);
u->alphaBits = getFBConfigAttrib(n, GLX_ALPHA_SIZE);
u->depthBits = getFBConfigAttrib(n, GLX_DEPTH_SIZE);
u->stencilBits = getFBConfigAttrib(n, GLX_STENCIL_SIZE);
u->accumRedBits = getFBConfigAttrib(n, GLX_ACCUM_RED_SIZE);
u->accumGreenBits = getFBConfigAttrib(n, GLX_ACCUM_GREEN_SIZE);
u->accumBlueBits = getFBConfigAttrib(n, GLX_ACCUM_BLUE_SIZE);
u->accumAlphaBits = getFBConfigAttrib(n, GLX_ACCUM_ALPHA_SIZE);
u->auxBuffers = getFBConfigAttrib(n, GLX_AUX_BUFFERS);
if (getFBConfigAttrib(n, GLX_STEREO))
u->stereo = GLFW_TRUE;
if (getFBConfigAttrib(n, GLX_DOUBLEBUFFER))
u->doublebuffer = GLFW_TRUE;
if (_glfw.glx.ARB_multisample)
u->samples = getFBConfigAttrib(n, GLX_SAMPLES);
if (_glfw.glx.ARB_framebuffer_sRGB || _glfw.glx.EXT_framebuffer_sRGB)
u->sRGB = getFBConfigAttrib(n, GLX_FRAMEBUFFER_SRGB_CAPABLE_ARB);
u->glx = n;
usableCount++;
}
// reiterate the selection loop without looking for transparency supporting
// formats if no matchig FB configs for a transparent window were found.
if( findTransparent && !usableCount ) {
findTransparent = GLFW_FALSE;
goto selectionloop;
}
closest = _glfwChooseFBConfig(desired, usableConfigs, usableCount);
if (closest)
*result = closest->glx;
XFree(nativeConfigs);
free(usableConfigs);
return closest ? GLFW_TRUE : GLFW_FALSE;
}
//-------------------------------------------------------------------------------------------------//
GLXGLSupport::GLXGLSupport() : mGLDisplay(0), mXDisplay(0)
{
// A connection that might be shared with the application for GL rendering:
mGLDisplay = getGLDisplay();
// A connection that is NOT shared to enable independent event processing:
mXDisplay = getXDisplay();
int dummy;
if (XQueryExtension(mXDisplay, "RANDR", &dummy, &dummy, &dummy))
{
XRRScreenConfiguration *screenConfig;
screenConfig = XRRGetScreenInfo(mXDisplay, DefaultRootWindow(mXDisplay));
if (screenConfig)
{
XRRScreenSize *screenSizes;
int nSizes = 0;
Rotation currentRotation;
int currentSizeID = XRRConfigCurrentConfiguration(screenConfig, ¤tRotation);
screenSizes = XRRConfigSizes(screenConfig, &nSizes);
mCurrentMode.first.first = screenSizes[currentSizeID].width;
mCurrentMode.first.second = screenSizes[currentSizeID].height;
mCurrentMode.second = XRRConfigCurrentRate(screenConfig);
mOriginalMode = mCurrentMode;
for(int sizeID = 0; sizeID < nSizes; sizeID++)
{
short *rates;
int nRates = 0;
rates = XRRConfigRates(screenConfig, sizeID, &nRates);
for (int rate = 0; rate < nRates; rate++)
{
VideoMode mode;
mode.first.first = screenSizes[sizeID].width;
mode.first.second = screenSizes[sizeID].height;
mode.second = rates[rate];
mVideoModes.push_back(mode);
}
}
XRRFreeScreenConfigInfo(screenConfig);
}
}
else
{
mCurrentMode.first.first = DisplayWidth(mXDisplay, DefaultScreen(mXDisplay));
mCurrentMode.first.second = DisplayHeight(mXDisplay, DefaultScreen(mXDisplay));
mCurrentMode.second = 0;
mOriginalMode = mCurrentMode;
mVideoModes.push_back(mCurrentMode);
}
GLXFBConfig *fbConfigs;
int config, nConfigs = 0;
fbConfigs = chooseFBConfig(NULL, &nConfigs);
for (config = 0; config < nConfigs; config++)
{
int caveat, samples;
getFBConfigAttrib (fbConfigs[config], GLX_CONFIG_CAVEAT, &caveat);
if (caveat != GLX_SLOW_CONFIG)
{
getFBConfigAttrib (fbConfigs[config], GLX_SAMPLES, &samples);
mSampleLevels.push_back(StringConverter::toString(samples));
}
}
XFree (fbConfigs);
remove_duplicates(mSampleLevels);
}
// Return a list of available and usable framebuffer configs
//
static void
chooseFBConfig(const OSGLContext_glx_data* glxInfo,
const FramebufferConfig& desired,
GLXFBConfig* result)
{
bool trustWindowBit = true;
// HACK: This is a (hopefully temporary) workaround for Chromium
// (VirtualBox GL) not setting the window bit on any GLXFBConfigs
const char* vendor = glxInfo->_imp->GetClientString(glxInfo->_imp->x11.display, GLX_VENDOR);
if (strcmp(vendor, "Chromium") == 0) {
trustWindowBit = false;
}
int nativeCount;
GLXFBConfig* nativeConfigs = glxInfo->_imp->GetFBConfigs(glxInfo->_imp->x11.display, glxInfo->_imp->x11.screen, &nativeCount);
if (!nativeCount) {
throw std::runtime_error("GLX: No GLXFBConfigs returned");
}
std::vector<FramebufferConfig> usableConfigs(nativeCount);
int usableCount = 0;
for (int i = 0; i < nativeCount; ++i) {
const GLXFBConfig& n = nativeConfigs[i];
FramebufferConfig& u = usableConfigs[usableCount];
// Only consider RGBA GLXFBConfigs
if ( !(getFBConfigAttrib(glxInfo, n, GLX_RENDER_TYPE) & GLX_RGBA_BIT) ) {
continue;
}
// Only consider window GLXFBConfigs
if ( !(getFBConfigAttrib(glxInfo, n, GLX_DRAWABLE_TYPE) & GLX_WINDOW_BIT) ) {
if (trustWindowBit) {
continue;
}
}
u.redBits = getFBConfigAttrib(glxInfo, n, GLX_RED_SIZE);
u.greenBits = getFBConfigAttrib(glxInfo, n, GLX_GREEN_SIZE);
u.blueBits = getFBConfigAttrib(glxInfo, n, GLX_BLUE_SIZE);
u.alphaBits = getFBConfigAttrib(glxInfo, n, GLX_ALPHA_SIZE);
u.depthBits = getFBConfigAttrib(glxInfo, n, GLX_DEPTH_SIZE);
u.stencilBits = getFBConfigAttrib(glxInfo, n, GLX_STENCIL_SIZE);
u.accumRedBits = getFBConfigAttrib(glxInfo, n, GLX_ACCUM_RED_SIZE);
u.accumGreenBits = getFBConfigAttrib(glxInfo, n, GLX_ACCUM_GREEN_SIZE);
u.accumBlueBits = getFBConfigAttrib(glxInfo, n, GLX_ACCUM_BLUE_SIZE);
u.accumAlphaBits = getFBConfigAttrib(glxInfo, n, GLX_ACCUM_ALPHA_SIZE);
u.auxBuffers = getFBConfigAttrib(glxInfo, n, GLX_AUX_BUFFERS);
if ( getFBConfigAttrib(glxInfo, n, GLX_STEREO) ) {
u.stereo = GL_TRUE;
}
if ( getFBConfigAttrib(glxInfo, n, GLX_DOUBLEBUFFER) ) {
u.doublebuffer = GL_TRUE;
}
if (glxInfo->_imp->ARB_multisample) {
u.samples = getFBConfigAttrib(glxInfo, n, GLX_SAMPLES);
}
if (glxInfo->_imp->ARB_framebuffer_sRGB || glxInfo->_imp->EXT_framebuffer_sRGB) {
u.sRGB = getFBConfigAttrib(glxInfo, n, GLX_FRAMEBUFFER_SRGB_CAPABLE_ARB);
}
u.handle = (uintptr_t) n;
usableCount++;
}
const FramebufferConfig& closest = OSGLContext::chooseFBConfig(desired, usableConfigs, usableCount);
*result = (GLXFBConfig) closest.handle;
XFree(nativeConfigs);
} // chooseFBConfig
