bool RTCALL VBoxOglIs3DAccelerationSupported()
{
if (RTEnvGet("VBOX_CROGL_FORCE_SUPPORTED"))
{
LogRel(("VBOX_CROGL_FORCE_SUPPORTED is specified, skipping 3D test, and treating as supported\n"));
return true;
}
CGDirectDisplayID display = CGMainDisplayID ();
CGOpenGLDisplayMask cglDisplayMask = CGDisplayIDToOpenGLDisplayMask (display);
CGLPixelFormatObj pixelFormat = NULL;
GLint numPixelFormats = 0;
CGLPixelFormatAttribute attribs[] = {
kCGLPFADisplayMask,
(CGLPixelFormatAttribute)cglDisplayMask,
kCGLPFAAccelerated,
kCGLPFADoubleBuffer,
kCGLPFAWindow,
(CGLPixelFormatAttribute)NULL
};
display = CGMainDisplayID();
cglDisplayMask = CGDisplayIDToOpenGLDisplayMask(display);
CGLChoosePixelFormat(attribs, &pixelFormat, &numPixelFormats);
if (pixelFormat)
{
CGLContextObj cglContext = 0;
CGLCreateContext(pixelFormat, NULL, &cglContext);
CGLDestroyPixelFormat(pixelFormat);
if (cglContext)
{
GLboolean isSupported = GL_TRUE;
#ifdef VBOX_WITH_COCOA_QT
/* On the Cocoa port we depend on the GL_EXT_framebuffer_object &
* the GL_EXT_texture_rectangle extension. If they are not
* available, disable 3D support. */
CGLSetCurrentContext(cglContext);
const GLubyte* strExt;
strExt = glGetString(GL_EXTENSIONS);
isSupported = gluCheckExtension((const GLubyte*)"GL_EXT_framebuffer_object", strExt);
if (isSupported)
{
isSupported = gluCheckExtension((const GLubyte*)"GL_EXT_texture_rectangle", strExt);
if (!isSupported)
LogRel(("OpenGL Info: GL_EXT_texture_rectangle extension not supported\n"));
}
else
LogRel(("OpenGL Info: GL_EXT_framebuffer_object extension not supported\n"));
#endif /* VBOX_WITH_COCOA_QT */
CGLDestroyContext(cglContext);
return isSupported == GL_TRUE ? true : false;
}
}
return false;
}
void CheckForGLSL() {
#if _WIN32
// Missing code for the Windows equivalent :(
#else
const GLubyte* extensions = glGetString(GL_EXTENSIONS);
if (!gluCheckExtension((const GLubyte*)"GL_ARB_shader_objects", extensions) ||
!gluCheckExtension((const GLubyte*)"GL_ARB_vertex_shader", extensions) ||
!gluCheckExtension((const GLubyte*)"GL_ARB_fragment_shader", extensions) ||
!gluCheckExtension((const GLubyte*)"GL_ARB_shading_language_100", extensions)) {
std::cout << glGetString(GL_RENDERER) << " does not support GLSL" << std::endl;
exit(1);
}
#endif
}
static inline GLboolean CheckForExtension(const GLchar *extensionName,
const GLubyte *extensions)
{
GLboolean bExtensionAvailable = gluCheckExtension((GLubyte *)extensionName,
extensions);
return bExtensionAvailable;
} // CheckForExtension
GLboolean GLShader::HasGLSL(void)
{
#ifdef _WIN32
return GL_TRUE;
#else
const GLubyte* extensions = glGetString(GL_EXTENSIONS);
if (GL_FALSE == gluCheckExtension((const GLubyte*) "GL_ARB_shader_objects", extensions))
return GL_FALSE;
if (GL_FALSE == gluCheckExtension((const GLubyte*)"GL_ARB_vertex_shader", extensions))
return GL_FALSE;
if (GL_FALSE == gluCheckExtension((const GLubyte*)"GL_ARB_fragment_shader", extensions))
return GL_FALSE;
if (GL_FALSE == gluCheckExtension((const GLubyte*)"GL_ARB_shading_language_100", extensions))
return GL_FALSE;
return GL_TRUE;
#endif
}
bool BMDOpenGLOutput::InitOpenGL()
{
const GLubyte * strExt;
GLboolean isFBO;
pContext->makeCurrent();
strExt = glGetString (GL_EXTENSIONS);
isFBO = gluCheckExtension ((const GLubyte*)"GL_EXT_framebuffer_object", strExt);
if (!isFBO)
{
QMessageBox::critical(NULL,"OpenGL initialization error.", "OpenGL extention \"GL_EXT_framebuffer_object\" is not supported.");
return false;
}
return true;
}
const GrGLInterface* SkNativeGLContext::createGLContext() {
fDisplay = XOpenDisplay(0);
if (!fDisplay) {
SkDebugf("Failed to open X display.\n");
this->destroyGLContext();
return NULL;
}
// Get a matching FB config
static int visual_attribs[] = {
GLX_X_RENDERABLE , True,
GLX_DRAWABLE_TYPE , GLX_PIXMAP_BIT,
None
};
#ifdef GLX_1_3
//SkDebugf("Getting matching framebuffer configs.\n");
int fbcount;
GLXFBConfig *fbc = glXChooseFBConfig(fDisplay, DefaultScreen(fDisplay),
visual_attribs, &fbcount);
if (!fbc) {
SkDebugf("Failed to retrieve a framebuffer config.\n");
this->destroyGLContext();
return NULL;
}
//SkDebugf("Found %d matching FB configs.\n", fbcount);
// Pick the FB config/visual with the most samples per pixel
//SkDebugf("Getting XVisualInfos.\n");
int best_fbc = -1, best_num_samp = -1;
int i;
for (i = 0; i < fbcount; ++i) {
XVisualInfo *vi = glXGetVisualFromFBConfig(fDisplay, fbc[i]);
if (vi) {
int samp_buf, samples;
glXGetFBConfigAttrib(fDisplay, fbc[i], GLX_SAMPLE_BUFFERS, &samp_buf);
glXGetFBConfigAttrib(fDisplay, fbc[i], GLX_SAMPLES, &samples);
//SkDebugf(" Matching fbconfig %d, visual ID 0x%2x: SAMPLE_BUFFERS = %d,"
// " SAMPLES = %d\n",
// i, (unsigned int)vi->visualid, samp_buf, samples);
if (best_fbc < 0 || (samp_buf && samples > best_num_samp))
best_fbc = i, best_num_samp = samples;
}
XFree(vi);
}
GLXFBConfig bestFbc = fbc[best_fbc];
// Be sure to free the FBConfig list allocated by glXChooseFBConfig()
XFree(fbc);
// Get a visual
XVisualInfo *vi = glXGetVisualFromFBConfig(fDisplay, bestFbc);
//SkDebugf("Chosen visual ID = 0x%x\n", (unsigned int)vi->visualid);
#else
int numVisuals;
XVisualInfo visTemplate, *visReturn;
visReturn = XGetVisualInfo(fDisplay, VisualNoMask, &visTemplate, &numVisuals);
if (NULL == visReturn)
{
SkDebugf("Failed to get visual information.\n");
this->destroyGLContext();
return NULL;
}
int best = -1, best_num_samp = -1;
for (int i = 0; i < numVisuals; ++i)
{
int samp_buf, samples;
glXGetConfig(fDisplay, &visReturn[i], GLX_SAMPLE_BUFFERS, &samp_buf);
glXGetConfig(fDisplay, &visReturn[i], GLX_SAMPLES, &samples);
if (best < 0 || (samp_buf && samples > best_num_samp))
best = i, best_num_samp = samples;
}
XVisualInfo temp = visReturn[best];
XVisualInfo *vi = &temp;
XFree(visReturn);
#endif
fPixmap = XCreatePixmap(fDisplay, RootWindow(fDisplay, vi->screen), 10, 10, vi->depth);
if (!fPixmap) {
SkDebugf("Failed to create pixmap.\n");
this->destroyGLContext();
return NULL;
}
fGlxPixmap = glXCreateGLXPixmap(fDisplay, vi, fPixmap);
#ifdef GLX_1_3
// Done with the visual info data
XFree(vi);
#endif
// Create the context
// Install an X error handler so the application won't exit if GL 3.0
// context allocation fails.
//
// Note this error handler is global.
// All display connections in all threads of a process use the same
// error handler, so be sure to guard against other threads issuing
// X commands while this code is running.
ctxErrorOccurred = false;
int (*oldHandler)(Display*, XErrorEvent*) =
XSetErrorHandler(&ctxErrorHandler);
// Get the default screen's GLX extension list
const char *glxExts = glXQueryExtensionsString(
fDisplay, DefaultScreen(fDisplay)
);
// Check for the GLX_ARB_create_context extension string and the function.
// If either is not present, use GLX 1.3 context creation method.
if (!gluCheckExtension(
reinterpret_cast<const GLubyte*>("GLX_ARB_create_context")
, reinterpret_cast<const GLubyte*>(glxExts)))
{
//SkDebugf("GLX_ARB_create_context not found."
// " Using old-style GLX context.\n");
#ifdef GLX_1_3
fContext = glXCreateNewContext(fDisplay, bestFbc, GLX_RGBA_TYPE, 0, True);
#else
fContext = glXCreateContext(fDisplay, vi, 0, True);
#endif
}
#ifdef GLX_1_3
else {
//SkDebugf("Creating context.\n");
PFNGLXCREATECONTEXTATTRIBSARBPROC glXCreateContextAttribsARB =
(PFNGLXCREATECONTEXTATTRIBSARBPROC) glXGetProcAddressARB((GrGLubyte*)"glXCreateContextAttribsARB");
int context_attribs[] = {
GLX_CONTEXT_MAJOR_VERSION_ARB, 3,
GLX_CONTEXT_MINOR_VERSION_ARB, 0,
//GLX_CONTEXT_FLAGS_ARB , GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB,
None
};
fContext = glXCreateContextAttribsARB(
fDisplay, bestFbc, 0, True, context_attribs
);
// Sync to ensure any errors generated are processed.
XSync(fDisplay, False);
if (!ctxErrorOccurred && fContext) {
//SkDebugf( "Created GL 3.0 context.\n" );
} else {
// Couldn't create GL 3.0 context.
// Fall back to old-style 2.x context.
// When a context version below 3.0 is requested,
// implementations will return the newest context version compatible
// with OpenGL versions less than version 3.0.
// GLX_CONTEXT_MAJOR_VERSION_ARB = 1
context_attribs[1] = 1;
// GLX_CONTEXT_MINOR_VERSION_ARB = 0
context_attribs[3] = 0;
ctxErrorOccurred = false;
//SkDebugf("Failed to create GL 3.0 context."
// " Using old-style GLX context.\n");
fContext = glXCreateContextAttribsARB(
fDisplay, bestFbc, 0, True, context_attribs
);
}
}
#endif
// Sync to ensure any errors generated are processed.
XSync(fDisplay, False);
// Restore the original error handler
XSetErrorHandler(oldHandler);
if (ctxErrorOccurred || !fContext) {
SkDebugf("Failed to create an OpenGL context.\n");
this->destroyGLContext();
return NULL;
}
// Verify that context is a direct context
if (!glXIsDirect(fDisplay, fContext)) {
//SkDebugf("Indirect GLX rendering context obtained.\n");
} else {
//SkDebugf("Direct GLX rendering context obtained.\n");
}
//SkDebugf("Making context current.\n");
if (!glXMakeCurrent(fDisplay, fGlxPixmap, fContext)) {
SkDebugf("Could not set the context.\n");
this->destroyGLContext();
return NULL;
}
const GrGLInterface* interface = GrGLCreateNativeInterface();
if (!interface) {
SkDebugf("Failed to create gl interface");
this->destroyGLContext();
return NULL;
}
return interface;
}
bool RTCALL VBoxOglIs3DAccelerationSupported()
{
if (RTEnvExist("VBOX_CROGL_FORCE_SUPPORTED"))
{
LogRel(("VBOX_CROGL_FORCE_SUPPORTED is specified, skipping 3D test, and treating as supported\n"));
return true;
}
CGDirectDisplayID display = CGMainDisplayID ();
CGOpenGLDisplayMask cglDisplayMask = CGDisplayIDToOpenGLDisplayMask (display);
CGLPixelFormatObj pixelFormat = NULL;
GLint numPixelFormats = 0;
CGLError rcCgl;
CGLPixelFormatAttribute attribs[] = {
kCGLPFADisplayMask,
(CGLPixelFormatAttribute)cglDisplayMask,
kCGLPFAAccelerated,
kCGLPFADoubleBuffer,
VBoxOglIsOfflineRenderingAppropriate() ? kCGLPFAAllowOfflineRenderers : (CGLPixelFormatAttribute)NULL,
(CGLPixelFormatAttribute)NULL
};
display = CGMainDisplayID();
cglDisplayMask = CGDisplayIDToOpenGLDisplayMask(display);
rcCgl = CGLChoosePixelFormat(attribs, &pixelFormat, &numPixelFormats);
if (rcCgl != kCGLNoError)
{
LogRel(("OpenGL Info: 3D test unable to choose pixel format (rcCgl=0x%X)\n", rcCgl));
return false;
}
if (pixelFormat)
{
CGLContextObj cglContext = 0;
rcCgl = CGLCreateContext(pixelFormat, NULL, &cglContext);
CGLDestroyPixelFormat(pixelFormat);
if (rcCgl != kCGLNoError)
{
LogRel(("OpenGL Info: 3D test unable to create context (rcCgl=0x%X)\n", rcCgl));
return false;
}
if (cglContext)
{
GLboolean isSupported = GL_TRUE;
#ifdef VBOX_WITH_COCOA_QT
/* On the Cocoa port we depend on the GL_EXT_framebuffer_object &
* the GL_EXT_texture_rectangle extension. If they are not
* available, disable 3D support. */
CGLSetCurrentContext(cglContext);
const GLubyte* strExt;
strExt = glGetString(GL_EXTENSIONS);
isSupported = gluCheckExtension((const GLubyte*)"GL_EXT_framebuffer_object", strExt);
if (isSupported)
{
isSupported = gluCheckExtension((const GLubyte*)"GL_EXT_texture_rectangle", strExt);
if (!isSupported)
LogRel(("OpenGL Info: 3D test found that GL_EXT_texture_rectangle extension not supported\n"));
}
else
LogRel(("OpenGL Info: 3D test found that GL_EXT_framebuffer_object extension not supported\n"));
#endif /* VBOX_WITH_COCOA_QT */
CGLDestroyContext(cglContext);
LogRel(("OpenGL Info: 3D test %spassed\n", isSupported == GL_TRUE ? "" : "not "));
return isSupported == GL_TRUE ? true : false;
}
else
LogRel(("OpenGL Info: 3D test unable to create context (internal error)\n"));
}
else
LogRel(("OpenGL Info: 3D test unable to choose pixel format (internal error)\n"));
return false;
}
void CheckOpenGLCaps (CGDisplayCount maxDspys,
GLCaps dCaps[],
CGDisplayCount * dCnt)
{
CGLContextObj curr_ctx = 0;
CGDirectDisplayID dspys[32];
CGDisplayErr theErr;
short i;
short size = sizeof (GLCaps);
// no devices
*dCnt = 0;
if (maxDspys == 0) { // find number of displays
*dCnt = 0;
theErr = CGGetActiveDisplayList (32, dspys, dCnt);
if (theErr) // theErr getting list
*dCnt = 0; // 0 displays since can't correctly find any
// zero list to ensure the routines are used correctly
memset (dspys, 0, sizeof (CGDirectDisplayID) * *dCnt);
return; // return dCnt
}
if (NULL == dCaps) return;
theErr = CGGetActiveDisplayList(maxDspys, dspys, dCnt);
if (theErr) return; // theErr getting list
if (0 == *dCnt) return; // no displays
memset (dCaps, 0, size * *dCnt); // zero memory
for (i = 0; i < *dCnt; i++) {
// get device ids
dCaps[i].cgDisplayID = dspys[i];
dCaps[i].cglDisplayMask = CGDisplayIDToOpenGLDisplayMask(dspys[i]);
{ // get current geometry
CGRect displayRect = CGDisplayBounds (dspys[i]);
// get mode dictionary
CFDictionaryRef dispMode = CGDisplayCurrentMode (dspys[i]);
dCaps[i].deviceWidth = (long) displayRect.size.width;
dCaps[i].deviceHeight = (long) displayRect.size.height;
dCaps[i].deviceOriginX = (long) displayRect.origin.x;
dCaps[i].deviceOriginY = (long) displayRect.origin.y;
dCaps[i].deviceDepth = (short) _getDictLong (dispMode,
kCGDisplayBitsPerPixel);
dCaps[i].deviceRefresh = (short) (_getDictDouble (dispMode,
kCGDisplayRefreshRate) + 0.5);
}
{ // get renderer info based on gDevice
CGLRendererInfoObj info;
long j;
GLint numRenderers = 0;
GLint rv = 0;
CGLError theErr2 = 0;
theErr2 = CGLQueryRendererInfo (dCaps[i].cglDisplayMask,
&info,
&numRenderers);
if(0 == theErr2) {
CGLDescribeRenderer (info, 0, kCGLRPRendererCount, &numRenderers);
for (j = 0; j < numRenderers; j++) {
// find accelerated renderer (assume only one)
CGLDescribeRenderer (info, j, kCGLRPAccelerated, &rv);
if (true == rv) { // if accelerated
// what is the renderer ID
CGLDescribeRenderer (info, j, kCGLRPRendererID,
&dCaps[i].rendererID);
// can we do full screen?
CGLDescribeRenderer (info, j, kCGLRPFullScreen, &rv);
dCaps[i].fullScreenCapable = (bool) rv;
// what is the VRAM?
CGLDescribeRenderer (info, j, kCGLRPVideoMemory,
&dCaps[i].deviceVRAM);
// what is the current texture memory?
CGLDescribeRenderer (info, j, kCGLRPTextureMemory,
&dCaps[i].deviceTextureRAM);
break; // done
}
}
}
CGLDestroyRendererInfo (info);
}
{ // build context and context specific info
CGLPixelFormatAttribute attribs[] = { kCGLPFADisplayMask,
dCaps[i].cglDisplayMask,
(CGLPixelFormatAttribute)0 };
CGLPixelFormatObj pixelFormat = NULL;
GLint numPixelFormats = 0;
CGLContextObj cglContext;
curr_ctx = CGLGetCurrentContext (); // get current CGL context
CGLChoosePixelFormat (attribs, &pixelFormat, &numPixelFormats);
if (pixelFormat) {
CGLCreateContext(pixelFormat, NULL, &cglContext);
CGLDestroyPixelFormat (pixelFormat);
CGLSetCurrentContext (cglContext);
if (cglContext) {
const GLubyte * strExt;
const GLubyte * strRend;
const GLubyte * strVers;
const GLubyte * strVend;
// get renderer strings
strRend = glGetString (GL_RENDERER);
strncpy (dCaps[i].strRendererName, (char *) strRend, 255);
strVend = glGetString (GL_VENDOR);
strncpy (dCaps[i].strRendererVendor, (char *) strVend, 255);
strVers = glGetString (GL_VERSION);
strncpy (dCaps[i].strRendererVersion, (char *) strVers, 255);
{ // get BCD version
short j = 0;
short shiftVal = 8;
while (((strVers[j] <= '9') && (strVers[j] >= '0')) ||
(strVers[j] == '.')) {
// get only basic version info (until first non-digit or non-.)
if ((strVers[j] <= '9') && (strVers[j] >= '0')) {
dCaps[i].glVersion += (strVers[j] - '0') << shiftVal;
shiftVal -= 4;
}
j++;
}
}
strExt = glGetString (GL_EXTENSIONS);
// get caps
glGetIntegerv (GL_MAX_TEXTURE_UNITS,
&dCaps[i].textureUnits);
glGetIntegerv (GL_MAX_TEXTURE_SIZE,
&dCaps[i].maxTextureSize);
glGetIntegerv (GL_MAX_3D_TEXTURE_SIZE,
&dCaps[i].max3DTextureSize);
glGetIntegerv (GL_MAX_CUBE_MAP_TEXTURE_SIZE,
&dCaps[i].maxCubeMapTextureSize);
// get functionality info
dCaps[i].fSpecularVector =
gluCheckExtension ((const GLubyte *) "GL_APPLE_specular_vector", strExt);
dCaps[i].fTransformHint =
gluCheckExtension ((const GLubyte *) "GL_APPLE_transform_hint", strExt);
dCaps[i].fPackedPixels =
gluCheckExtension ((const GLubyte *) "GL_APPLE_packed_pixels", strExt) ||
gluCheckExtension ((const GLubyte *) "GL_APPLE_packed_pixel", strExt) ||
(dCaps[i].glVersion >= 0x0120);
dCaps[i].fClientStorage =
gluCheckExtension ((const GLubyte *) "GL_APPLE_client_storage", strExt);
dCaps[i].fYCbCr =
gluCheckExtension ((const GLubyte *) "GL_APPLE_ycbcr_422", strExt);
dCaps[i].fTextureRange =
gluCheckExtension ((const GLubyte *) "GL_APPLE_texture_range", strExt);
dCaps[i].fFence =
gluCheckExtension ((const GLubyte *) "GL_APPLE_fence", strExt);
dCaps[i].fVAR =
gluCheckExtension ((const GLubyte *) "GL_APPLE_vertex_array_range", strExt);
dCaps[i].fVAO =
gluCheckExtension ((const GLubyte *) "GL_APPLE_vertex_array_object", strExt);
dCaps[i].fElementArray =
gluCheckExtension ((const GLubyte *) "GL_APPLE_element_array", strExt);
dCaps[i].fVPEvals =
gluCheckExtension ((const GLubyte *) "GL_APPLE_vertex_program_evaluators",strExt);
dCaps[i].fFloatPixels =
gluCheckExtension ((const GLubyte *) "GL_APPLE_float_pixels", strExt);
dCaps[i].fFlushRenderer =
gluCheckExtension ((const GLubyte *) "GL_APPLE_flush_render", strExt);
dCaps[i].fPixelBuffer =
gluCheckExtension ((const GLubyte *) "GL_APPLE_pixel_buffer", strExt);
dCaps[i].fImaging =
gluCheckExtension ((const GLubyte *) "GL_ARB_imaging", strExt);
dCaps[i].fTransposeMatrix =
gluCheckExtension ((const GLubyte *) "GL_ARB_transpose_matrix", strExt) ||
(dCaps[i].glVersion >= 0x0130);
dCaps[i].fMultitexture =
gluCheckExtension ((const GLubyte *) "GL_ARB_multitexture", strExt) ||
(dCaps[i].glVersion >= 0x0130);
dCaps[i].fTexEnvAdd =
gluCheckExtension ((const GLubyte *) "GL_ARB_texture_env_add", strExt) ||
gluCheckExtension ((const GLubyte *) "GL_EXT_texture_env_add", strExt) ||
(dCaps[i].glVersion >= 0x0130);
dCaps[i].fTexEnvCombine =
gluCheckExtension ((const GLubyte *) "GL_ARB_texture_env_combine", strExt) ||
(dCaps[i].glVersion >= 0x0130);
dCaps[i].fTexEnvDot3 =
gluCheckExtension ((const GLubyte *) "GL_ARB_texture_env_dot3", strExt) ||
(dCaps[i].glVersion >= 0x0130);
dCaps[i].fTexEnvCrossbar =
gluCheckExtension ((const GLubyte *) "GL_ARB_texture_env_crossbar", strExt) ||
(dCaps[i].glVersion >= 0x0140);
dCaps[i].fTexCubeMap =
gluCheckExtension ((const GLubyte *) "GL_ARB_texture_cube_map", strExt) ||
(dCaps[i].glVersion >= 0x0130);
dCaps[i].fTexCompress =
gluCheckExtension ((const GLubyte *) "GL_ARB_texture_compression", strExt) ||
(dCaps[i].glVersion >= 0x0130);
dCaps[i].fMultisample =
gluCheckExtension ((const GLubyte *) "GL_ARB_multisample", strExt) ||
(dCaps[i].glVersion >= 0x0130);
dCaps[i].fTexBorderClamp =
gluCheckExtension ((const GLubyte *) "GL_ARB_texture_border_clamp", strExt) ||
(dCaps[i].glVersion >= 0x0130);
dCaps[i].fPointParam =
gluCheckExtension ((const GLubyte *) "GL_ARB_point_parameters", strExt) ||
(dCaps[i].glVersion >= 0x0140);
dCaps[i].fVertexProg =
gluCheckExtension ((const GLubyte *) "GL_ARB_vertex_program", strExt);
dCaps[i].fFragmentProg =
gluCheckExtension ((const GLubyte *) "GL_ARB_fragment_program", strExt);
dCaps[i].fTexMirrorRepeat =
gluCheckExtension ((const GLubyte *) "GL_ARB_texture_mirrored_repeat", strExt) ||
(dCaps[i].glVersion >= 0x0140);
dCaps[i].fDepthTex =
gluCheckExtension ((const GLubyte *) "GL_ARB_depth_texture", strExt) ||
(dCaps[i].glVersion >= 0x0140);
dCaps[i].fShadow =
gluCheckExtension ((const GLubyte *) "GL_ARB_shadow", strExt) ||
(dCaps[i].glVersion >= 0x0140);
dCaps[i].fShadowAmbient =
gluCheckExtension ((const GLubyte *) "GL_ARB_shadow_ambient", strExt);
dCaps[i].fVertexBlend =
gluCheckExtension ((const GLubyte *) "GL_ARB_vertex_blend", strExt);
dCaps[i].fWindowPos =
gluCheckExtension ((const GLubyte *) "GL_ARB_window_pos", strExt) ||
(dCaps[i].glVersion >= 0x0140);
dCaps[i].fTex3D =
gluCheckExtension ((const GLubyte *) "GL_EXT_texture3D", strExt) ||
(dCaps[i].glVersion >= 0x0120);
dCaps[i].fClipVolHint =
gluCheckExtension ((const GLubyte *) "GL_EXT_clip_volume_hint", strExt);
dCaps[i].fRescaleNorm =
gluCheckExtension ((const GLubyte *) "GL_EXT_rescale_normal", strExt) ||
(dCaps[i].glVersion >= 0x0120);
dCaps[i].fBlendColor =
gluCheckExtension ((const GLubyte *) "GL_EXT_blend_color", strExt) ||
gluCheckExtension ((const GLubyte *) "GL_ARB_imaging", strExt);
dCaps[i].fBlendMinMax =
gluCheckExtension ((const GLubyte *) "GL_EXT_blend_minmax", strExt) ||
gluCheckExtension ((const GLubyte *) "GL_ARB_imaging", strExt);
dCaps[i].fBlendSub =
gluCheckExtension ((const GLubyte *) "GL_EXT_blend_subtract", strExt) ||
gluCheckExtension ((const GLubyte *) "GL_ARB_imaging", strExt);
dCaps[i].fCVA =
gluCheckExtension ((const GLubyte *) "GL_EXT_compiled_vertex_array", strExt);
dCaps[i].fTexLODBias =
gluCheckExtension ((const GLubyte *) "GL_EXT_texture_lod_bias", strExt) ||
(dCaps[i].glVersion >= 0x0140);
dCaps[i].fABGR =
gluCheckExtension ((const GLubyte *) "GL_EXT_abgr", strExt);
dCaps[i].fBGRA =
gluCheckExtension ((const GLubyte *) "GL_EXT_bgra", strExt) ||
(dCaps[i].glVersion >= 0x0120);
dCaps[i].fTexFilterAniso =
gluCheckExtension ((const GLubyte *) "GL_EXT_texture_filter_anisotropic",strExt);
dCaps[i].fPaletteTex =
gluCheckExtension ((const GLubyte *) "GL_EXT_paletted_texture", strExt);
dCaps[i].fShareTexPalette =
gluCheckExtension ((const GLubyte *) "GL_EXT_shared_texture_palette", strExt);
dCaps[i].fSecColor =
gluCheckExtension ((const GLubyte *) "GL_EXT_secondary_color", strExt) ||
(dCaps[i].glVersion >= 0x0140);
dCaps[i].fTexCompressS3TC =
gluCheckExtension ((const GLubyte *) "GL_EXT_texture_compression_s3tc", strExt);
dCaps[i].fTexRect =
gluCheckExtension ((const GLubyte *) "GL_EXT_texture_rectangle", strExt);
dCaps[i].fFogCoord =
gluCheckExtension ((const GLubyte *) "GL_EXT_fog_coord", strExt);
dCaps[i].fDrawRangeElements =
gluCheckExtension ((const GLubyte *) "GL_EXT_draw_range_elements", strExt);
dCaps[i].fStencilWrap =
gluCheckExtension ((const GLubyte *) "GL_EXT_stencil_wrap", strExt) ||
(dCaps[i].glVersion >= 0x0140);
dCaps[i].fBlendFuncSep =
gluCheckExtension ((const GLubyte *) "GL_EXT_blend_func_separate", strExt) ||
(dCaps[i].glVersion >= 0x0140);
dCaps[i].fMultiDrawArrays =
gluCheckExtension ((const GLubyte *) "GL_EXT_multi_draw_arrays", strExt) ||
(dCaps[i].glVersion >= 0x0140);
dCaps[i].fShadowFunc =
gluCheckExtension ((const GLubyte *) "GL_EXT_shadow_funcs", strExt);
dCaps[i].fStencil2Side =
gluCheckExtension ((const GLubyte *) "GL_EXT_stencil_two_side", strExt) ||
(dCaps[i].glVersion >= 0x0140);
dCaps[i].fColorSubtable =
gluCheckExtension ((const GLubyte *) "GL_EXT_color_subtable", strExt) ||
gluCheckExtension ((const GLubyte *) "GL_ARB_imaging", strExt);
dCaps[i].fConvolution =
gluCheckExtension ((const GLubyte *) "GL_EXT_convolution", strExt) ||
gluCheckExtension ((const GLubyte *) "GL_ARB_imaging", strExt);
dCaps[i].fHistogram =
gluCheckExtension ((const GLubyte *) "GL_EXT_histogram", strExt) ||
gluCheckExtension ((const GLubyte *) "GL_ARB_imaging", strExt);
dCaps[i].fColorTable =
gluCheckExtension ((const GLubyte *) "GL_SGI_color_table", strExt) ||
gluCheckExtension ((const GLubyte *) "GL_ARB_imaging", strExt);
dCaps[i].fColorMatrix =
gluCheckExtension ((const GLubyte *) "GL_SGI_color_matrix", strExt) ||
gluCheckExtension ((const GLubyte *) "GL_ARB_imaging", strExt);
dCaps[i].fTexEdgeClamp =
gluCheckExtension ((const GLubyte *) "GL_SGIS_texture_edge_clamp", strExt) ||
(dCaps[i].glVersion >= 0x0120);
dCaps[i].fGenMipmap =
gluCheckExtension ((const GLubyte *) "GL_SGIS_generate_mipmap", strExt);
dCaps[i].fTexLOD =
gluCheckExtension ((const GLubyte *) "GL_SGIS_texture_lod", strExt) ||
(dCaps[i].glVersion >= 0x0120);
dCaps[i].fPointCull =
gluCheckExtension ((const GLubyte *) "GL_ATI_point_cull_mode", strExt);
dCaps[i].fTexMirrorOnce =
gluCheckExtension ((const GLubyte *) "GL_ATI_texture_mirror_once", strExt);
dCaps[i].fPNtriangles =
gluCheckExtension ((const GLubyte *) "GL_ATI_pn_triangles", strExt) ||
gluCheckExtension ((const GLubyte *) "GL_ATIX_pn_triangles", strExt);
dCaps[i].fTextFragShader =
gluCheckExtension ((const GLubyte *) "GL_ATI_text_fragment_shader", strExt);
dCaps[i].fATIBlendEqSep =
gluCheckExtension ((const GLubyte *) "GL_ATI_blend_equation_separate", strExt);
dCaps[i].fBlendWeightMinMax =
gluCheckExtension ((const GLubyte *) "GL_ATI_blend_weighted_minmax", strExt);
dCaps[i].fCombine3 =
gluCheckExtension ((const GLubyte *) "GL_ATI_texture_env_combine3", strExt);
dCaps[i].fSepStencil =
gluCheckExtension ((const GLubyte *) "GL_ATI_separate_stencil", strExt);
dCaps[i].fArrayRevComps4Byte =
gluCheckExtension ((const GLubyte *) "GL_ATI_array_rev_comps_in_4_bytes",strExt);
dCaps[i].fNVPointSprite =
gluCheckExtension ((const GLubyte *) "GL_NV_point_sprite", strExt);
dCaps[i].fRegCombiners =
gluCheckExtension ((const GLubyte *) "GL_NV_register_combiners", strExt);
dCaps[i].fRegCombiners2 =
gluCheckExtension ((const GLubyte *) "GL_NV_register_combiners2", strExt);
dCaps[i].fTexEnvCombine4 =
gluCheckExtension ((const GLubyte *) "GL_NV_texture_env_combine4", strExt);
dCaps[i].fBlendSquare =
gluCheckExtension ((const GLubyte *) "GL_NV_blend_square", strExt) ||
(dCaps[i].glVersion >= 0x0140);
dCaps[i].fFogDist =
gluCheckExtension ((const GLubyte *) "GL_NV_fog_distance", strExt);
dCaps[i].fMultisampleFilterHint =
gluCheckExtension ((const GLubyte *) "GL_NV_multisample_filter_hint", strExt);
dCaps[i].fTexGenReflect =
gluCheckExtension ((const GLubyte *) "GL_NV_texgen_reflection", strExt);
dCaps[i].fTexShader =
gluCheckExtension ((const GLubyte *) "GL_NV_texture_shader", strExt);
dCaps[i].fTexShader2 =
gluCheckExtension ((const GLubyte *) "GL_NV_texture_shader2", strExt);
dCaps[i].fTexShader3 =
gluCheckExtension ((const GLubyte *) "GL_NV_texture_shader3", strExt);
dCaps[i].fDepthClamp =
gluCheckExtension ((const GLubyte *) "GL_NV_depth_clamp", strExt);
dCaps[i].fLightMaxExp =
gluCheckExtension ((const GLubyte *) "GL_NV_light_max_exponent", strExt);
dCaps[i].fRasterPosClip =
gluCheckExtension ((const GLubyte *) "GL_IBM_rasterpos_clip", strExt);
dCaps[i].fConvBorderModes =
gluCheckExtension ((const GLubyte *) "GL_HP_convolution_border_modes", strExt) ||
gluCheckExtension ((const GLubyte *) "GL_ARB_imaging", strExt);
dCaps[i].fAuxDeptStencil =
gluCheckExtension ((const GLubyte *) "GL_APPLE_aux_depth_stencil", strExt);
dCaps[i].fFlushBufferRange =
gluCheckExtension ((const GLubyte *) "GL_APPLE_flush_buffer_range", strExt);
dCaps[i].fObjectPurgeable =
gluCheckExtension ((const GLubyte *) "GL_APPLE_object_purgeable", strExt);
dCaps[i].fDrawBuffers =
gluCheckExtension ((const GLubyte *) "GL_ARB_draw_buffers", strExt) ||
(dCaps[i].glVersion >= 0x0200);
dCaps[i].fFragmentProgShadow =
gluCheckExtension ((const GLubyte *) "GL_ARB_fragment_program_shadow", strExt);
dCaps[i].fFragmentShader =
gluCheckExtension ((const GLubyte *) "GL_ARB_fragment_shader", strExt) ||
(dCaps[i].glVersion >= 0x0200);
dCaps[i].fHalfFloatPixel =
gluCheckExtension ((const GLubyte *) "GL_ARB_half_float_pixel", strExt);
dCaps[i].fOcclusionQuery =
gluCheckExtension ((const GLubyte *) "GL_ARB_occlusion_query", strExt) ||
(dCaps[i].glVersion >= 0x0150);
dCaps[i].fPBO =
gluCheckExtension ((const GLubyte *) "GL_ARB_pixel_buffer_object", strExt) ||
(dCaps[i].glVersion >= 0x0210);
dCaps[i].fPointSprite =
gluCheckExtension ((const GLubyte *) "GL_ARB_point_sprite", strExt) ||
(dCaps[i].glVersion >= 0x0200);
dCaps[i].fShaderObjects =
gluCheckExtension ((const GLubyte *) "GL_ARB_shader_objects", strExt) ||
(dCaps[i].glVersion >= 0x0200);
dCaps[i].fShaderTextureLOD =
gluCheckExtension ((const GLubyte *) "GL_ARB_shader_texture_lod", strExt);
dCaps[i].fShadingLanguage100 =
gluCheckExtension ((const GLubyte *) "GL_ARB_shading_language_100", strExt) ||
(dCaps[i].glVersion >= 0x0200);
dCaps[i].fTexFloat =
gluCheckExtension ((const GLubyte *) "GL_ARB_texture_float", strExt);
dCaps[i].fTexNPOT =
gluCheckExtension ((const GLubyte *) "GL_ARB_texture_non_power_of_two", strExt) ||
(dCaps[i].glVersion >= 0x0200);
dCaps[i].fVBO =
gluCheckExtension ((const GLubyte *) "GL_ARB_vertex_buffer_object", strExt) ||
(dCaps[i].glVersion >= 0x0150);
dCaps[i].fVertexShader =
gluCheckExtension ((const GLubyte *) "GL_ARB_vertex_shader", strExt) ||
(dCaps[i].glVersion >= 0x0200);
dCaps[i].fTexComp3dc =
gluCheckExtension ((const GLubyte *) "GL_ATI_texture_compression_3dc", strExt);
dCaps[i].fTexATIfloat =
gluCheckExtension ((const GLubyte *) "GL_ATI_texture_float", strExt);
dCaps[i].fBlendEqSep =
gluCheckExtension ((const GLubyte *) "GL_EXT_blend_equation_separate", strExt) ||
(dCaps[i].glVersion >= 0x0200);
dCaps[i].fDepthBounds =
gluCheckExtension ((const GLubyte *) "GL_EXT_depth_bounds_test", strExt);
dCaps[i].fFBOblit =
gluCheckExtension ((const GLubyte *) "GL_EXT_framebuffer_blit", strExt);
dCaps[i].fFBO =
gluCheckExtension ((const GLubyte *) "GL_EXT_framebuffer_object", strExt);
dCaps[i].fGeometryShader4 =
gluCheckExtension ((const GLubyte *) "GL_EXT_geometry_shader4", strExt);
dCaps[i].fGPUProgParams =
gluCheckExtension ((const GLubyte *) "GL_EXT_gpu_program_parameters", strExt);
dCaps[i].fGPUShader4 =
gluCheckExtension ((const GLubyte *) "GL_EXT_gpu_shader4", strExt);
dCaps[i].fDepthStencil =
gluCheckExtension ((const GLubyte *) "GL_EXT_packed_depth_stencil", strExt);
dCaps[i].fSepSpecColor =
gluCheckExtension ((const GLubyte *) "GL_EXT_separate_specular_color", strExt) ||
(dCaps[i].glVersion >= 0x0120);
dCaps[i].fTexCompDXT1 =
gluCheckExtension ((const GLubyte *) "GL_EXT_texture_compression_dxt1", strExt);
dCaps[i].fTexMirrorClamp =
gluCheckExtension ((const GLubyte *) "GL_EXT_texture_mirror_clamp", strExt);
dCaps[i].fTexSRGB =
gluCheckExtension ((const GLubyte *) "GL_EXT_texture_sRGB", strExt) ||
(dCaps[i].glVersion >= 0x0210);
if (dCaps[i].fTexRect) // only check if extension supported
glGetIntegerv (GL_MAX_RECTANGLE_TEXTURE_SIZE_EXT,
&dCaps[i].maxRectTextureSize);
else
dCaps[i].maxRectTextureSize = 0;
CGLDestroyContext (cglContext);
}
}
CGLSetCurrentContext (curr_ctx); // reset current CGL context
}
}
}
void COpenGLExtensionHandler::initExtensions(bool stencilBuffer)
{
const f32 ver = (f32)atof((c8*)glGetString(GL_VERSION));
Version = core::floor32(ver)*100+(s32)(ver-floor(ver));
if ( Version >= 102)
os::Printer::log("OpenGL driver version is 1.2 or better.", ELL_INFORMATION);
else
os::Printer::log("OpenGL driver version is not 1.2 or better.", ELL_WARNING);
const GLubyte* t = glGetString(GL_EXTENSIONS);
// os::Printer::log((const c8*)t, ELL_INFORMATION);
#ifdef GLU_VERSION_1_3
const GLubyte* gluVersion = gluGetString(GLU_VERSION);
if (gluVersion[0]>1 || gluVersion[3]>2)
{
for (u32 i=0; i<IRR_OpenGL_Feature_Count; ++i)
FeatureAvailable[i] = gluCheckExtension((const GLubyte*)OpenGLFeatureStrings[i], t);
}
else
#endif
{
s32 len = (s32)strlen((const char*)t);
c8 *str = new c8[len+1];
c8* p = str;
for (s32 i=0; i<len; ++i)
{
str[i] = (char)t[i];
if (str[i] == ' ')
{
str[i] = 0;
for (u32 i=0; i<IRR_OpenGL_Feature_Count; ++i)
if (strstr(p, OpenGLFeatureStrings[i]))
FeatureAvailable[i] = true;
p = p + strlen(p) + 1;
}
}
delete [] str;
}
MultiTextureExtension = FeatureAvailable[IRR_ARB_multitexture];
MultiSamplingExtension = FeatureAvailable[IRR_ARB_multisample];
AnisotropyExtension = FeatureAvailable[IRR_EXT_texture_filter_anisotropic];
SeparateStencilExtension = FeatureAvailable[IRR_ATI_separate_stencil];
TextureCompressionExtension = FeatureAvailable[IRR_ARB_texture_compression];
PackedDepthStencilExtension = FeatureAvailable[IRR_EXT_packed_depth_stencil];
SeparateSpecularColorExtension = FeatureAvailable[IRR_EXT_separate_specular_color];
StencilBuffer=stencilBuffer;
#ifdef _IRR_WINDOWS_API_
// get multitexturing function pointers
pGlActiveTextureARB = (PFNGLACTIVETEXTUREARBPROC) wglGetProcAddress("glActiveTextureARB");
pGlClientActiveTextureARB = (PFNGLCLIENTACTIVETEXTUREARBPROC) wglGetProcAddress("glClientActiveTextureARB");
// get fragment and vertex program function pointers
pGlGenProgramsARB = (PFNGLGENPROGRAMSARBPROC) wglGetProcAddress("glGenProgramsARB");
pGlBindProgramARB = (PFNGLBINDPROGRAMARBPROC) wglGetProcAddress("glBindProgramARB");
pGlProgramStringARB = (PFNGLPROGRAMSTRINGARBPROC) wglGetProcAddress("glProgramStringARB");
pGlDeleteProgramsARB = (PFNGLDELETEPROGRAMSNVPROC) wglGetProcAddress("glDeleteProgramsARB");
pGlProgramLocalParameter4fvARB = (PFNGLPROGRAMLOCALPARAMETER4FVARBPROC) wglGetProcAddress("glProgramLocalParameter4fvARB");
pGlCreateShaderObjectARB = (PFNGLCREATESHADEROBJECTARBPROC) wglGetProcAddress("glCreateShaderObjectARB");
pGlShaderSourceARB = (PFNGLSHADERSOURCEARBPROC) wglGetProcAddress("glShaderSourceARB");
pGlCompileShaderARB = (PFNGLCOMPILESHADERARBPROC) wglGetProcAddress("glCompileShaderARB");
pGlCreateProgramObjectARB = (PFNGLCREATEPROGRAMOBJECTARBPROC) wglGetProcAddress("glCreateProgramObjectARB");
pGlAttachObjectARB = (PFNGLATTACHOBJECTARBPROC) wglGetProcAddress("glAttachObjectARB");
pGlLinkProgramARB = (PFNGLLINKPROGRAMARBPROC) wglGetProcAddress("glLinkProgramARB");
pGlUseProgramObjectARB = (PFNGLUSEPROGRAMOBJECTARBPROC) wglGetProcAddress("glUseProgramObjectARB");
pGlDeleteObjectARB = (PFNGLDELETEOBJECTARBPROC) wglGetProcAddress("glDeleteObjectARB");
pGlGetInfoLogARB = (PFNGLGETINFOLOGARBPROC) wglGetProcAddress("glGetInfoLogARB");
pGlGetObjectParameterivARB = (PFNGLGETOBJECTPARAMETERIVARBPROC) wglGetProcAddress("glGetObjectParameterivARB");
pGlGetUniformLocationARB = (PFNGLGETUNIFORMLOCATIONARBPROC) wglGetProcAddress("glGetUniformLocationARB");
pGlUniform4fvARB = (PFNGLUNIFORM4FVARBPROC) wglGetProcAddress("glUniform4fvARB");
pGlUniform1ivARB = (PFNGLUNIFORM1IVARBPROC) wglGetProcAddress("glUniform1ivARB");
pGlUniform1fvARB = (PFNGLUNIFORM1FVARBPROC) wglGetProcAddress("glUniform1fvARB");
pGlUniform2fvARB = (PFNGLUNIFORM2FVARBPROC) wglGetProcAddress("glUniform2fvARB");
pGlUniform3fvARB = (PFNGLUNIFORM3FVARBPROC) wglGetProcAddress("glUniform3fvARB");
pGlUniformMatrix2fvARB = (PFNGLUNIFORMMATRIX2FVARBPROC) wglGetProcAddress("glUniformMatrix2fvARB");
pGlUniformMatrix3fvARB = (PFNGLUNIFORMMATRIX3FVARBPROC) wglGetProcAddress("glUniformMatrix3fvARB");
pGlUniformMatrix4fvARB = (PFNGLUNIFORMMATRIX4FVARBPROC) wglGetProcAddress("glUniformMatrix4fvARB");
pGlGetActiveUniformARB = (PFNGLGETACTIVEUNIFORMARBPROC) wglGetProcAddress("glGetActiveUniformARB");
// get point parameter extension
pGlPointParameterfARB = (PFNGLPOINTPARAMETERFARBPROC) wglGetProcAddress("glPointParameterfARB");
pGlPointParameterfvARB = (PFNGLPOINTPARAMETERFVARBPROC) wglGetProcAddress("glPointParameterfvARB");
// get stencil extension
pGlStencilFuncSeparate = (PFNGLSTENCILFUNCSEPARATEPROC) wglGetProcAddress("glStencilFuncSeparate");
pGlStencilOpSeparate = (PFNGLSTENCILOPSEPARATEPROC) wglGetProcAddress("glStencilOpSeparate");
pGlStencilFuncSeparateATI = (PFNGLSTENCILFUNCSEPARATEATIPROC) wglGetProcAddress("glStencilFuncSeparateATI");
pGlStencilOpSeparateATI = (PFNGLSTENCILOPSEPARATEATIPROC) wglGetProcAddress("glStencilOpSeparateATI");
// compressed textures
#ifdef PFNGLCOMPRESSEDTEXIMAGE2DPROC
pGlCompressedTexImage2D = (PFNGLCOMPRESSEDTEXIMAGE2DPROC) wglGetProcAddress("glCompressedTexImage2D");
#endif
// FrameBufferObjects
pGlBindFramebufferEXT = (PFNGLBINDFRAMEBUFFEREXTPROC) wglGetProcAddress("glBindFramebufferEXT");
pGlDeleteFramebuffersEXT = (PFNGLDELETEFRAMEBUFFERSEXTPROC) wglGetProcAddress("glDeleteFramebuffersEXT");
pGlGenFramebuffersEXT = (PFNGLGENFRAMEBUFFERSEXTPROC) wglGetProcAddress("glGenFramebuffersEXT");
pGlCheckFramebufferStatusEXT = (PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC) wglGetProcAddress("glCheckFramebufferStatusEXT");
pGlFramebufferTexture2DEXT = (PFNGLFRAMEBUFFERTEXTURE2DEXTPROC) wglGetProcAddress("glFramebufferTexture2DEXT");
pGlBindRenderbufferEXT = (PFNGLBINDRENDERBUFFEREXTPROC) wglGetProcAddress("glBindRenderbufferEXT");
pGlDeleteRenderbuffersEXT = (PFNGLDELETERENDERBUFFERSEXTPROC) wglGetProcAddress("glDeleteRenderbuffersEXT");
pGlGenRenderbuffersEXT = (PFNGLGENRENDERBUFFERSEXTPROC) wglGetProcAddress("glGenRenderbuffersEXT");
pGlRenderbufferStorageEXT = (PFNGLRENDERBUFFERSTORAGEEXTPROC) wglGetProcAddress("glRenderbufferStorageEXT");
pGlFramebufferRenderbufferEXT = (PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC) wglGetProcAddress("glFramebufferRenderbufferEXT");
// vsync extension
wglSwapIntervalEXT = (PFNWGLSWAPINTERVALFARPROC)wglGetProcAddress( "wglSwapIntervalEXT" );
#elif defined(_IRR_USE_LINUX_DEVICE_) || defined (_IRR_USE_SDL_DEVICE_)
#ifdef _IRR_OPENGL_USE_EXTPOINTER_
#ifdef _IRR_USE_SDL_DEVICE_
#define IRR_OGL_LOAD_EXTENSION(x) SDL_GL_GetProcAddress(reinterpret_cast<const char*>(x))
#else
// Accessing the correct function is quite complex
// All libraries should support the ARB version, however
// since GLX 1.4 the non-ARB version is the official one
// So we have to check the runtime environment and
// choose the proper symbol
// In case you still have problems please enable the
// next line by uncommenting it
// #define _IRR_GETPROCADDRESS_WORKAROUND_
#ifndef _IRR_GETPROCADDRESS_WORKAROUND_
__GLXextFuncPtr (*IRR_OGL_LOAD_EXTENSION)(const GLubyte*)=0;
#ifdef GLX_VERSION_1_4
int major,minor;
glXQueryVersion(glXGetCurrentDisplay(), &major, &minor);
if ((major>1) || (minor>3))
IRR_OGL_LOAD_EXTENSION=glXGetProcAddress;
else
#endif
IRR_OGL_LOAD_EXTENSION=glXGetProcAddressARB;
#else
#define IRR_OGL_LOAD_EXTENSION glXGetProcAddressARB
#endif
#endif
pGlActiveTextureARB = (PFNGLACTIVETEXTUREARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glActiveTextureARB"));
pGlClientActiveTextureARB = (PFNGLCLIENTACTIVETEXTUREARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glClientActiveTextureARB"));
// get fragment and vertex program function pointers
pGlGenProgramsARB = (PFNGLGENPROGRAMSARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glGenProgramsARB"));
pGlBindProgramARB = (PFNGLBINDPROGRAMARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glBindProgramARB"));
pGlProgramStringARB = (PFNGLPROGRAMSTRINGARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glProgramStringARB"));
pGlDeleteProgramsARB = (PFNGLDELETEPROGRAMSNVPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glDeleteProgramsARB"));
pGlProgramLocalParameter4fvARB = (PFNGLPROGRAMLOCALPARAMETER4FVARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glProgramLocalParameter4fvARB"));
pGlCreateShaderObjectARB = (PFNGLCREATESHADEROBJECTARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glCreateShaderObjectARB"));
pGlShaderSourceARB = (PFNGLSHADERSOURCEARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glShaderSourceARB"));
pGlCompileShaderARB = (PFNGLCOMPILESHADERARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glCompileShaderARB"));
pGlCreateProgramObjectARB = (PFNGLCREATEPROGRAMOBJECTARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glCreateProgramObjectARB"));
pGlAttachObjectARB = (PFNGLATTACHOBJECTARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glAttachObjectARB"));
pGlLinkProgramARB = (PFNGLLINKPROGRAMARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glLinkProgramARB"));
pGlUseProgramObjectARB = (PFNGLUSEPROGRAMOBJECTARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glUseProgramObjectARB"));
pGlDeleteObjectARB = (PFNGLDELETEOBJECTARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glDeleteObjectARB"));
pGlGetInfoLogARB = (PFNGLGETINFOLOGARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glGetInfoLogARB"));
pGlGetObjectParameterivARB = (PFNGLGETOBJECTPARAMETERIVARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glGetObjectParameterivARB"));
pGlGetUniformLocationARB = (PFNGLGETUNIFORMLOCATIONARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glGetUniformLocationARB"));
pGlUniform4fvARB = (PFNGLUNIFORM4FVARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glUniform4fvARB"));
pGlUniform1ivARB = (PFNGLUNIFORM1IVARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glUniform1ivARB"));
pGlUniform1fvARB = (PFNGLUNIFORM1FVARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glUniform1fvARB"));
pGlUniform2fvARB = (PFNGLUNIFORM2FVARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glUniform2fvARB"));
pGlUniform3fvARB = (PFNGLUNIFORM3FVARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glUniform3fvARB"));
pGlUniform4fvARB = (PFNGLUNIFORM4FVARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glUniform4fvARB"));
pGlUniformMatrix2fvARB = (PFNGLUNIFORMMATRIX2FVARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glUniformMatrix2fvARB"));
pGlUniformMatrix3fvARB = (PFNGLUNIFORMMATRIX3FVARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glUniformMatrix3fvARB"));
pGlUniformMatrix4fvARB = (PFNGLUNIFORMMATRIX4FVARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glUniformMatrix4fvARB"));
pGlGetActiveUniformARB = (PFNGLGETACTIVEUNIFORMARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glGetActiveUniformARB"));
// get point parameter extension
pGlPointParameterfARB = (PFNGLPOINTPARAMETERFARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glPointParameterfARB"));
pGlPointParameterfvARB = (PFNGLPOINTPARAMETERFVARBPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glPointParameterfvARB"));
// get stencil extension
pGlStencilFuncSeparate = (PFNGLSTENCILFUNCSEPARATEPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glStencilFuncSeparate"));
pGlStencilOpSeparate = (PFNGLSTENCILOPSEPARATEPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glStencilOpSeparate"));
pGlStencilFuncSeparateATI = (PFNGLSTENCILFUNCSEPARATEATIPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glStencilFuncSeparateATI"));
pGlStencilOpSeparateATI = (PFNGLSTENCILOPSEPARATEATIPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glStencilOpSeparateATI"));
// compressed textures
#ifdef PFNGLCOMPRESSEDTEXIMAGE2DPROC
pGlCompressedTexImage2D = (PFNGLCOMPRESSEDTEXIMAGE2DPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glCompressedTexImage2D"));
#endif
#if defined(GLX_SGI_swap_control) && !defined(_IRR_USE_SDL_DEVICE_)
// get vsync extension
glxSwapIntervalSGI = (PFNGLXSWAPINTERVALSGIPROC)IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glXSwapIntervalSGI"));
#endif
// FrameBufferObjects
pGlBindFramebufferEXT = (PFNGLBINDFRAMEBUFFEREXTPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glBindFramebufferEXT"));
pGlDeleteFramebuffersEXT = (PFNGLDELETEFRAMEBUFFERSEXTPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glDeleteFramebuffersEXT"));
pGlGenFramebuffersEXT = (PFNGLGENFRAMEBUFFERSEXTPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glGenFramebuffersEXT"));
pGlCheckFramebufferStatusEXT = (PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glCheckFramebufferStatusEXT"));
pGlFramebufferTexture2DEXT = (PFNGLFRAMEBUFFERTEXTURE2DEXTPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glFramebufferTexture2DEXT"));
pGlBindRenderbufferEXT = (PFNGLBINDRENDERBUFFEREXTPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glBindRenderbufferEXT"));
pGlDeleteRenderbuffersEXT = (PFNGLDELETERENDERBUFFERSEXTPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glDeleteRenderbuffersEXT"));
pGlGenRenderbuffersEXT = (PFNGLGENRENDERBUFFERSEXTPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glGenRenderbuffersEXT"));
pGlRenderbufferStorageEXT = (PFNGLRENDERBUFFERSTORAGEEXTPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glRenderbufferStorageEXT"));
pGlFramebufferRenderbufferEXT = (PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC)
IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glFramebufferRenderbufferEXT"));
#endif // _IRR_OPENGL_USE_EXTPOINTER_
#endif // _IRR_WINDOWS_API_
// set some properties
glGetIntegerv(GL_MAX_TEXTURE_UNITS, &MaxTextureUnits);
glGetIntegerv(GL_MAX_LIGHTS, &MaxLights);
glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &MaxAnisotropy);
#ifdef _IRR_OPENGL_USE_EXTPOINTER_
if (!pGlActiveTextureARB || !pGlClientActiveTextureARB)
{
MultiTextureExtension = false;
os::Printer::log("Failed to load OpenGL's multitexture extension, proceeding without.", ELL_WARNING);
}
else
#endif
if (MaxTextureUnits < 2)
{
MultiTextureExtension = false;
os::Printer::log("Warning: OpenGL device only has one texture unit. Disabling multitexturing.", ELL_WARNING);
}
MaxTextureUnits = core::min_((u32)MaxTextureUnits,MATERIAL_MAX_TEXTURES);
glGetIntegerv(GL_MAX_ELEMENTS_INDICES, &MaxIndices);
}
const GrGLInterface* SkNativeGLContext::createGLContext(GrGLStandard forcedGpuAPI) {
fDisplay = XOpenDisplay(0);
if (!fDisplay) {
SkDebugf("Failed to open X display.\n");
this->destroyGLContext();
return NULL;
}
// Get a matching FB config
static int visual_attribs[] = {
GLX_X_RENDERABLE , True,
GLX_DRAWABLE_TYPE , GLX_PIXMAP_BIT,
None
};
int glx_major, glx_minor;
// FBConfigs were added in GLX version 1.3.
if (!glXQueryVersion(fDisplay, &glx_major, &glx_minor) ||
((glx_major == 1) && (glx_minor < 3)) || (glx_major < 1)) {
SkDebugf("GLX version 1.3 or higher required.\n");
this->destroyGLContext();
return NULL;
}
//SkDebugf("Getting matching framebuffer configs.\n");
int fbcount;
GLXFBConfig *fbc = glXChooseFBConfig(fDisplay, DefaultScreen(fDisplay),
visual_attribs, &fbcount);
if (!fbc) {
SkDebugf("Failed to retrieve a framebuffer config.\n");
this->destroyGLContext();
return NULL;
}
//SkDebugf("Found %d matching FB configs.\n", fbcount);
// Pick the FB config/visual with the most samples per pixel
//SkDebugf("Getting XVisualInfos.\n");
int best_fbc = -1, best_num_samp = -1;
int i;
for (i = 0; i < fbcount; ++i) {
XVisualInfo *vi = glXGetVisualFromFBConfig(fDisplay, fbc[i]);
if (vi) {
int samp_buf, samples;
glXGetFBConfigAttrib(fDisplay, fbc[i], GLX_SAMPLE_BUFFERS, &samp_buf);
glXGetFBConfigAttrib(fDisplay, fbc[i], GLX_SAMPLES, &samples);
//SkDebugf(" Matching fbconfig %d, visual ID 0x%2x: SAMPLE_BUFFERS = %d,"
// " SAMPLES = %d\n",
// i, (unsigned int)vi->visualid, samp_buf, samples);
if (best_fbc < 0 || (samp_buf && samples > best_num_samp))
best_fbc = i, best_num_samp = samples;
}
XFree(vi);
}
GLXFBConfig bestFbc = fbc[best_fbc];
// Be sure to free the FBConfig list allocated by glXChooseFBConfig()
XFree(fbc);
// Get a visual
XVisualInfo *vi = glXGetVisualFromFBConfig(fDisplay, bestFbc);
//SkDebugf("Chosen visual ID = 0x%x\n", (unsigned int)vi->visualid);
fPixmap = XCreatePixmap(fDisplay, RootWindow(fDisplay, vi->screen), 10, 10, vi->depth);
if (!fPixmap) {
SkDebugf("Failed to create pixmap.\n");
this->destroyGLContext();
return NULL;
}
fGlxPixmap = glXCreateGLXPixmap(fDisplay, vi, fPixmap);
// Done with the visual info data
XFree(vi);
// Create the context
// Install an X error handler so the application won't exit if GL 3.0
// context allocation fails.
//
// Note this error handler is global.
// All display connections in all threads of a process use the same
// error handler, so be sure to guard against other threads issuing
// X commands while this code is running.
ctxErrorOccurred = false;
int (*oldHandler)(Display*, XErrorEvent*) =
XSetErrorHandler(&ctxErrorHandler);
// Get the default screen's GLX extension list
const char *glxExts = glXQueryExtensionsString(
fDisplay, DefaultScreen(fDisplay)
);
// Check for the GLX_ARB_create_context extension string and the function.
// If either is not present, use GLX 1.3 context creation method.
if (!gluCheckExtension(reinterpret_cast<const GLubyte*>("GLX_ARB_create_context"),
reinterpret_cast<const GLubyte*>(glxExts))) {
if (kGLES_GrGLStandard != forcedGpuAPI) {
fContext = glXCreateNewContext(fDisplay, bestFbc, GLX_RGBA_TYPE, 0, True);
}
} else {
//SkDebugf("Creating context.\n");
PFNGLXCREATECONTEXTATTRIBSARBPROC glXCreateContextAttribsARB =
(PFNGLXCREATECONTEXTATTRIBSARBPROC) glXGetProcAddressARB((GrGLubyte*)"glXCreateContextAttribsARB");
if (kGLES_GrGLStandard == forcedGpuAPI) {
if (gluCheckExtension(
reinterpret_cast<const GLubyte*>("GLX_EXT_create_context_es2_profile"),
reinterpret_cast<const GLubyte*>(glxExts))) {
static const int context_attribs_gles[] = {
GLX_CONTEXT_MAJOR_VERSION_ARB, 3,
GLX_CONTEXT_MINOR_VERSION_ARB, 0,
GLX_CONTEXT_PROFILE_MASK_ARB, GLX_CONTEXT_ES2_PROFILE_BIT_EXT,
None
};
fContext = glXCreateContextAttribsARB(fDisplay, bestFbc, 0, True,
context_attribs_gles);
}
} else {
// Well, unfortunately GLX will not just give us the highest context so instead we have
// to do this nastiness
for (i = NUM_GL_VERSIONS - 2; i > 0 ; i--) {
/* don't bother below GL 3.0 */
if (gl_versions[i].major == 3 && gl_versions[i].minor == 0) {
break;
}
// On Nvidia GPUs, to use Nv Path rendering we need a compatibility profile for the
// time being.
// TODO when Nvidia implements NVPR on Core profiles, we should start requesting
// core here
static const int context_attribs_gl[] = {
GLX_CONTEXT_MAJOR_VERSION_ARB, gl_versions[i].major,
GLX_CONTEXT_MINOR_VERSION_ARB, gl_versions[i].minor,
GLX_CONTEXT_PROFILE_MASK_ARB, GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB,
None
};
fContext =
glXCreateContextAttribsARB(fDisplay, bestFbc, 0, True, context_attribs_gl);
// Sync to ensure any errors generated are processed.
XSync(fDisplay, False);
if (!ctxErrorOccurred && fContext) {
break;
}
// try again
ctxErrorOccurred = false;
}
// Couldn't create GL 3.0 context.
// Fall back to old-style 2.x context.
// When a context version below 3.0 is requested,
// implementations will return the newest context version
// compatible with OpenGL versions less than version 3.0.
if (ctxErrorOccurred || !fContext) {
static const int context_attribs_gl_fallback[] = {
GLX_CONTEXT_MAJOR_VERSION_ARB, 1,
GLX_CONTEXT_MINOR_VERSION_ARB, 0,
None
};
ctxErrorOccurred = false;
fContext = glXCreateContextAttribsARB(fDisplay, bestFbc, 0, True,
context_attribs_gl_fallback);
}
}
}
// Sync to ensure any errors generated are processed.
XSync(fDisplay, False);
// Restore the original error handler
XSetErrorHandler(oldHandler);
if (ctxErrorOccurred || !fContext) {
SkDebugf("Failed to create an OpenGL context.\n");
this->destroyGLContext();
return NULL;
}
// Verify that context is a direct context
if (!glXIsDirect(fDisplay, fContext)) {
//SkDebugf("Indirect GLX rendering context obtained.\n");
} else {
//SkDebugf("Direct GLX rendering context obtained.\n");
}
//SkDebugf("Making context current.\n");
if (!glXMakeCurrent(fDisplay, fGlxPixmap, fContext)) {
SkDebugf("Could not set the context.\n");
this->destroyGLContext();
return NULL;
}
const GrGLInterface* interface = GrGLCreateNativeInterface();
if (!interface) {
SkDebugf("Failed to create gl interface");
this->destroyGLContext();
return NULL;
}
return interface;
}
