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Check that functions are available before doing anything

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baldurk
2014-12-03 16:52:54 +00:00
parent 185df924dc
commit cb7dd8fa6d
1 changed files with 14 additions and 8 deletions
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renderdoc/driver/gl/gl_common.cpp
+14 -8
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@@ -54,25 +54,28 @@ int GLCoreVersion = 0;
void DoVendorChecks(const GLHookSet &gl)
{
GLint numExts = 0;
gl.glGetIntegerv(eGL_NUM_EXTENSIONS, &numExts);
if(gl.glGetIntegerv) gl.glGetIntegerv(eGL_NUM_EXTENSIONS, &numExts);
RDCEraseEl(ExtensionSupport::extensions);
RDCEraseEl(ExtensionSupport::VendorChecks);
for(int i=0; i < numExts; i++)
if(gl.glGetStringi)
{
const char *ext = (const char *)gl.glGetStringi(eGL_EXTENSIONS, (GLuint)i);
for(int i=0; i < numExts; i++)
{
const char *ext = (const char *)gl.glGetStringi(eGL_EXTENSIONS, (GLuint)i);
if(ext == NULL || !ext[0] || !ext[1] || !ext[2] || !ext[3]) continue;
if(ext == NULL || !ext[0] || !ext[1] || !ext[2] || !ext[3]) continue;
ext += 3;
ext += 3;
#define EXT_CHECK(extname) if(!strcmp(ext, STRINGIZE(extname))) ExtensionSupport::extensions[CONCAT(ExtensionSupported_, extname)] = true;
EXT_CHECK(ARB_clip_control)
EXT_CHECK(ARB_enhanced_layouts)
EXT_CHECK(ARB_clip_control);
EXT_CHECK(ARB_enhanced_layouts);
#undef EXT_CHECK
}
}
//////////////////////////////////////////////////////////
@@ -90,6 +93,7 @@ void DoVendorChecks(const GLHookSet &gl)
// vertex buffer which is exactly what we wanted from GL_VERTEX_BINDING_BUFFER!
// see: http://devgurus.amd.com/message/1306745#1306745
if(gl.glGetError && gl.glGetIntegeri_v)
{
// clear all error flags.
GLenum err = gl.glGetError();
@@ -107,7 +111,9 @@ void DoVendorChecks(const GLHookSet &gl)
RDCWARN("Using AMD hack to avoid GL_VERTEX_BINDING_BUFFER");
}
}
if(gl.glGetIntegerv && gl.glGenTextures && gl.glBindTexture &&
gl.glTextureStorage2DEXT && gl.glGetTextureLevelParameterivEXT && gl.glDeleteTextures)
{
// We need to determine if GL_TEXTURE_COMPRESSED_IMAGE_SIZE for a compressed cubemap face target
// will return the size of the whole cubemap, or just one face. Since we fetch the cubemap