get proc addresses of gl funcs not declared in gl SDK headers on mac
Review URL: http://codereview.appspot.com/5297057/
git-svn-id: http://skia.googlecode.com/svn/trunk@2524 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/mac/GrGLCreateNativeInterface_mac.cpp b/src/gpu/mac/GrGLCreateNativeInterface_mac.cpp
index c0e93d7..61aa304 100644
--- a/src/gpu/mac/GrGLCreateNativeInterface_mac.cpp
+++ b/src/gpu/mac/GrGLCreateNativeInterface_mac.cpp
@@ -12,6 +12,21 @@
#include <OpenGL/gl.h>
#include <OpenGL/glext.h>
+#include <mach-o/dyld.h>
+
+
+// This uses deprecated functions, should rewrite using dlopen, dlsym, dlclose
+void* GetProcAddress(const char* name) {
+ NSSymbol symbol = NULL;
+ if (NSIsSymbolNameDefined(name)) {
+ symbol = NSLookupAndBindSymbol(name);
+ }
+ return NULL == symbol ? NULL : NSAddressOfSymbol(symbol);
+}
+
+#define GET_PROC(name) ((GrGL ## name ## Proc) GetProcAddress("_gl" #name))
+#define GET_PROC_SUFFIX(name, suffix) ((GrGL ## name ## Proc) GetProcAddress("_gl" #name #suffix))
+
const GrGLInterface* GrGLCreateNativeInterface() {
// The gl functions are not context-specific so we create one global
// interface
@@ -19,15 +34,23 @@
if (!glInterface.get()) {
GrGLInterface* interface = new GrGLInterface;
glInterface.reset(interface);
+ const char* verStr = (const char*) glGetString(GL_VERSION);
+ GrGLVersion ver = GrGLGetVersionFromString(verStr);
+ const char* extStr = (const char*) glGetString(GL_EXTENSIONS);
+
interface->fBindingsExported = kDesktop_GrGLBinding;
interface->fActiveTexture = glActiveTexture;
interface->fAttachShader = glAttachShader;
interface->fBeginQuery = glBeginQuery;
interface->fBindAttribLocation = glBindAttribLocation;
interface->fBindBuffer = glBindBuffer;
-#if GL_VERSION_3_0
- interface->fBindFragDataLocation = glBindFragDataLocation;
-#endif
+ if (ver >= GR_GL_VER(3,0)) {
+ #if GL_VERSION_3_0
+ interface->fBindFragDataLocation = glBindFragDataLocation;
+ #else
+ interface->fBindFragDataLocation = GET_PROC(BindFragDataLocation);
+ #endif
+ }
interface->fBindTexture = glBindTexture;
interface->fBlendColor = glBlendColor;
interface->fBlendFunc = glBlendFunc;
@@ -134,56 +157,113 @@
interface->fVertexPointer = glVertexPointer;
interface->fViewport = glViewport;
- #if GL_ARB_timer_query || GL_VERSION_3_3
- interface->fQueryCounter = glQueryCounter;
- interface->fGetQueryObjecti64v = glGetQueryObjecti64v;
- interface->fGetQueryObjectui64v = glGetQueryObjectui64v;
- #elif GL_EXT_timer_query
- interface->fGetQueryObjecti64v = glGetQueryObjecti64vEXT;
- interface->fGetQueryObjectui64v = glGetQueryObjectui64vEXT;
- #endif
-
- #if GL_ARB_framebuffer_object
- interface->fGenFramebuffers = glGenFramebuffers;
- interface->fGetFramebufferAttachmentParameteriv =
- glGetFramebufferAttachmentParameteriv;
- interface->fGetRenderbufferParameteriv = glGetRenderbufferParameteriv;
- interface->fBindFramebuffer = glBindFramebuffer;
- interface->fFramebufferTexture2D = glFramebufferTexture2D;
- interface->fCheckFramebufferStatus = glCheckFramebufferStatus;
- interface->fDeleteFramebuffers = glDeleteFramebuffers;
- interface->fRenderbufferStorage = glRenderbufferStorage;
- interface->fGenRenderbuffers = glGenRenderbuffers;
- interface->fDeleteRenderbuffers = glDeleteRenderbuffers;
- interface->fFramebufferRenderbuffer = glFramebufferRenderbuffer;
- interface->fBindRenderbuffer = glBindRenderbuffer;
- interface->fRenderbufferStorageMultisample =
- glRenderbufferStorageMultisample;
- interface->fBlitFramebuffer = glBlitFramebuffer;
- #elif GL_EXT_framebuffer_object
- interface->fGenFramebuffers = glGenFramebuffersEXT;
- interface->fGetFramebufferAttachmentParameteriv =
- glGetFramebufferAttachmentParameterivEXT;
- interface->fGetRenderbufferParameteriv =
- glGetRenderbufferParameterivEXT;
- interface->fBindFramebuffer = glBindFramebufferEXT;
- interface->fFramebufferTexture2D = glFramebufferTexture2DEXT;
- interface->fCheckFramebufferStatus = glCheckFramebufferStatusEXT;
- interface->fDeleteFramebuffers = glDeleteFramebuffersEXT;
- interface->fRenderbufferStorage = glRenderbufferStorageEXT;
- interface->fGenRenderbuffers = glGenRenderbuffersEXT;
- interface->fDeleteRenderbuffers = glDeleteRenderbuffersEXT;
- interface->fFramebufferRenderbuffer = glFramebufferRenderbufferEXT;
- interface->fBindRenderbuffer = glBindRenderbufferEXT;
- #if GL_EXT_framebuffer_multisample
- interface->fRenderbufferStorageMultisample =
- glRenderbufferStorageMultisampleEXT;
- #endif
- #if GL_EXT_framebuffer_blit
- interface->fBlitFramebuffer = glBlitFramebufferEXT;
- #endif
- #endif
- interface->fBindFragDataLocationIndexed = NULL;
+ if (ver >= GR_GL_VER(3,3) || GrGLHasExtensionFromString("GL_ARB_timer_query", extStr)) {
+ // ARB extension doesn't use the ARB suffix on the function name
+ #if GL_ARB_timer_query || GL_VERSION_3_3
+ interface->fQueryCounter = glQueryCounter;
+ interface->fGetQueryObjecti64v = glGetQueryObjecti64v;
+ interface->fGetQueryObjectui64v = glGetQueryObjectui64v;
+ #else
+ interface->fQueryCounter = GET_PROC(QueryCounter);
+ interface->fGetQueryObjecti64v = GET_PROC(GetQueryObjecti64v);
+ interface->fGetQueryObjectui64v = GET_PROC(GetQueryObjectui64v);
+ #endif
+ } else if (GrGLHasExtensionFromString("GL_EXT_timer_query", extStr)) {
+ #if GL_EXT_timer_query
+ interface->fGetQueryObjecti64v = glGetQueryObjecti64vEXT;
+ interface->fGetQueryObjectui64v = glGetQueryObjectui64vEXT;
+ #else
+ interface->fGetQueryObjecti64v = GET_PROC_SUFFIX(GetQueryObjecti64v, EXT);
+ interface->fGetQueryObjectui64v = GET_PROC_SUFFIX(GetQueryObjectui64v, EXT);
+ #endif
+ }
+
+ if (ver >= GR_GL_VER(3,0) || GrGLHasExtensionFromString("GL_ARB_framebuffer_object", extStr)) {
+ // ARB extension doesn't use the ARB suffix on the function names
+ #if GL_VERSION_3_0 || GL_ARB_framebuffer_object
+ interface->fGenFramebuffers = glGenFramebuffers;
+ interface->fGetFramebufferAttachmentParameteriv = glGetFramebufferAttachmentParameteriv;
+ interface->fGetRenderbufferParameteriv = glGetRenderbufferParameteriv;
+ interface->fBindFramebuffer = glBindFramebuffer;
+ interface->fFramebufferTexture2D = glFramebufferTexture2D;
+ interface->fCheckFramebufferStatus = glCheckFramebufferStatus;
+ interface->fDeleteFramebuffers = glDeleteFramebuffers;
+ interface->fRenderbufferStorage = glRenderbufferStorage;
+ interface->fGenRenderbuffers = glGenRenderbuffers;
+ interface->fDeleteRenderbuffers = glDeleteRenderbuffers;
+ interface->fFramebufferRenderbuffer = glFramebufferRenderbuffer;
+ interface->fBindRenderbuffer = glBindRenderbuffer;
+ interface->fRenderbufferStorageMultisample = glRenderbufferStorageMultisample;
+ interface->fBlitFramebuffer = glBlitFramebuffer;
+ #else
+ interface->fGenFramebuffers = GET_PROC(GenFramebuffers);
+ interface->fGetFramebufferAttachmentParameteriv = GET_PROC(GetFramebufferAttachmentParameteriv);
+ interface->fGetRenderbufferParameteriv = GET_PROC(GetRenderbufferParameteriv);
+ interface->fBindFramebuffer = GET_PROC(BindFramebuffer);
+ interface->fFramebufferTexture2D = GET_PROC(FramebufferTexture2D);
+ interface->fCheckFramebufferStatus = GET_PROC(CheckFramebufferStatus);
+ interface->fDeleteFramebuffers = GET_PROC(DeleteFramebuffers);
+ interface->fRenderbufferStorage = GET_PROC(RenderbufferStorage);
+ interface->fGenRenderbuffers = GET_PROC(GenRenderbuffers);
+ interface->fDeleteRenderbuffers = GET_PROC(DeleteRenderbuffers);
+ interface->fFramebufferRenderbuffer = GET_PROC(FramebufferRenderbuffer);
+ interface->fBindRenderbuffer = GET_PROC(BindRenderbuffer);
+ interface->fRenderbufferStorageMultisample = GET_PROC(RenderbufferStorageMultisample);
+ interface->fBlitFramebuffer = GET_PROC(BlitFramebuffer);
+ #endif
+ } else {
+ if (GrGLHasExtensionFromString("GL_EXT_framebuffer_object", extStr)) {
+ #if GL_EXT_framebuffer_object
+ interface->fGenFramebuffers = glGenFramebuffersEXT;
+ interface->fGetFramebufferAttachmentParameteriv = glGetFramebufferAttachmentParameterivEXT;
+ interface->fGetRenderbufferParameteriv = glGetRenderbufferParameterivEXT;
+ interface->fBindFramebuffer = glBindFramebufferEXT;
+ interface->fFramebufferTexture2D = glFramebufferTexture2DEXT;
+ interface->fCheckFramebufferStatus = glCheckFramebufferStatusEXT;
+ interface->fDeleteFramebuffers = glDeleteFramebuffersEXT;
+ interface->fRenderbufferStorage = glRenderbufferStorageEXT;
+ interface->fGenRenderbuffers = glGenRenderbuffersEXT;
+ interface->fDeleteRenderbuffers = glDeleteRenderbuffersEXT;
+ interface->fFramebufferRenderbuffer = glFramebufferRenderbufferEXT;
+ interface->fBindRenderbuffer = glBindRenderbufferEXT;
+ #else
+ interface->fGenFramebuffers = GET_PROC_SUFFIX(GenFramebuffers, EXT);
+ interface->fGetFramebufferAttachmentParameteriv = GET_PROC_SUFFIX(GetFramebufferAttachmentParameteriv, EXT);
+ interface->fGetRenderbufferParameteriv = GET_PROC_SUFFIX(GetRenderbufferParameteriv, EXT);
+ interface->fBindFramebuffer = GET_PROC_SUFFIX(BindFramebuffer, EXT);
+ interface->fFramebufferTexture2D = GET_PROC_SUFFIX(FramebufferTexture2D, EXT);
+ interface->fCheckFramebufferStatus = GET_PROC_SUFFIX(CheckFramebufferStatus, EXT);
+ interface->fDeleteFramebuffers = GET_PROC_SUFFIX(DeleteFramebuffers, EXT);
+ interface->fRenderbufferStorage = GET_PROC_SUFFIX(RenderbufferStorage, EXT);
+ interface->fGenRenderbuffers = GET_PROC_SUFFIX(GenRenderbuffers, EXT);
+ interface->fDeleteRenderbuffers = GET_PROC_SUFFIX(DeleteRenderbuffers, EXT);
+ interface->fFramebufferRenderbuffer = GET_PROC_SUFFIX(FramebufferRenderbuffer, EXT);
+ interface->fBindRenderbuffer = GET_PROC_SUFFIX(BindRenderbuffer, EXT);
+ #endif
+ }
+ if (GrGLHasExtensionFromString("GL_EXT_framebuffer_multisample", extStr)) {
+ #if GL_EXT_framebuffer_multisample
+ interface->fRenderbufferStorageMultisample = glRenderbufferStorageMultisampleEXT;
+ #else
+ interface->fRenderbufferStorageMultisample = GET_PROC_SUFFIX(RenderbufferStorageMultisample, EXT);
+ #endif
+ }
+ if (GrGLHasExtensionFromString("", extStr)) {
+ #if GL_EXT_framebuffer_blit
+ interface->fBlitFramebuffer = glBlitFramebufferEXT;
+ #else
+ interface->fBlitFramebuffer = GET_PROC_SUFFIX(BlitFramebuffer, EXT);
+ #endif
+ }
+ }
+ if (ver >= GR_GL_VER(3,3) || GrGLHasExtensionFromString("GL_ARB_blend_func_extended", extStr)) {
+ // ARB extension doesn't use the ARB suffix on the function name
+ #if GL_VERSION_3_3 || GL_ARB_blend_func_extended
+ interface->fBindFragDataLocationIndexed = glBindFragDataLocationIndexed;
+ #else
+ interface->fBindFragDataLocationIndexed = GET_PROC(BindFragDataLocationIndexed);
+ #endif
+ }
interface->fBindingsExported = kDesktop_GrGLBinding;
}