Complete rewrite of extension handling

[libs/gl.git] / source / ext_framebuffer_object.cpp

diff --git a/source/ext_framebuffer_object.cpp b/source/ext_framebuffer_object.cpp
index ab5048d6bb8fe2521a890484988ef049591726d7..e9193e1773eba757656b106d4d9323a68e5ca42d 100644 (file)
--- a/source/ext_framebuffer_object.cpp
+++ b/source/ext_framebuffer_object.cpp
@@ -1,47 +1,74 @@
-#include "extension.h"
 #include "ext_framebuffer_object.h"
 
 namespace Msp {
 namespace GL {
 
-PFNGLISRENDERBUFFEREXTPROC glIsRenderbufferEXT = 0;
-PFNGLBINDRENDERBUFFEREXTPROC glBindRenderbufferEXT = 0;
-PFNGLDELETERENDERBUFFERSEXTPROC glDeleteRenderbuffersEXT = 0;
-PFNGLGENRENDERBUFFERSEXTPROC glGenRenderbuffersEXT = 0;
-PFNGLRENDERBUFFERSTORAGEEXTPROC glRenderbufferStorageEXT = 0;
-PFNGLGETRENDERBUFFERPARAMETERIVEXTPROC glGetRenderbufferParameterivEXT = 0;
-PFNGLISFRAMEBUFFEREXTPROC glIsFramebufferEXT = 0;
-PFNGLBINDFRAMEBUFFEREXTPROC glBindFramebufferEXT = 0;
-PFNGLDELETEFRAMEBUFFERSEXTPROC glDeleteFramebuffersEXT = 0;
-PFNGLGENFRAMEBUFFERSEXTPROC glGenFramebuffersEXT = 0;
-PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC glCheckFramebufferStatusEXT = 0;
-PFNGLFRAMEBUFFERTEXTURE1DEXTPROC glFramebufferTexture1DEXT = 0;
-PFNGLFRAMEBUFFERTEXTURE2DEXTPROC glFramebufferTexture2DEXT = 0;
-PFNGLFRAMEBUFFERTEXTURE3DEXTPROC glFramebufferTexture3DEXT = 0;
-PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC glFramebufferRenderbufferEXT = 0;
-PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVEXTPROC glGetFramebufferAttachmentParameterivEXT = 0;
-PFNGLGENERATEMIPMAPEXTPROC glGenerateMipmapEXT = 0;
+PFNGLBINDFRAMEBUFFERPROC glBindFramebuffer = 0;
+PFNGLBINDRENDERBUFFERPROC glBindRenderbuffer = 0;
+PFNGLCHECKFRAMEBUFFERSTATUSPROC glCheckFramebufferStatus = 0;
+PFNGLDELETEFRAMEBUFFERSPROC glDeleteFramebuffers = 0;
+PFNGLDELETERENDERBUFFERSPROC glDeleteRenderbuffers = 0;
+PFNGLFRAMEBUFFERRENDERBUFFERPROC glFramebufferRenderbuffer = 0;
+PFNGLFRAMEBUFFERTEXTURE1DPROC glFramebufferTexture1D = 0;
+PFNGLFRAMEBUFFERTEXTURE2DPROC glFramebufferTexture2D = 0;
+PFNGLFRAMEBUFFERTEXTURE3DPROC glFramebufferTexture3D = 0;
+PFNGLGENFRAMEBUFFERSPROC glGenFramebuffers = 0;
+PFNGLGENRENDERBUFFERSPROC glGenRenderbuffers = 0;
+PFNGLGENERATEMIPMAPPROC glGenerateMipmap = 0;
+PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVPROC glGetFramebufferAttachmentParameteriv = 0;
+PFNGLGETRENDERBUFFERPARAMETERIVPROC glGetRenderbufferParameteriv = 0;
+PFNGLISFRAMEBUFFERPROC glIsFramebuffer = 0;
+PFNGLISRENDERBUFFERPROC glIsRenderbuffer = 0;
+PFNGLRENDERBUFFERSTORAGEPROC glRenderbufferStorage = 0;
 
-void init_ext_framebuffer_object()
+Extension::SupportLevel init_ext_framebuffer_object()
 {
-       glIsRenderbufferEXT = reinterpret_cast<PFNGLISRENDERBUFFEREXTPROC>(get_proc_address("glIsRenderbufferEXT"));
-       glBindRenderbufferEXT = reinterpret_cast<PFNGLBINDRENDERBUFFEREXTPROC>(get_proc_address("glBindRenderbufferEXT"));
-       glDeleteRenderbuffersEXT = reinterpret_cast<PFNGLDELETERENDERBUFFERSEXTPROC>(get_proc_address("glDeleteRenderbuffersEXT"));
-       glGenRenderbuffersEXT = reinterpret_cast<PFNGLGENRENDERBUFFERSEXTPROC>(get_proc_address("glGenRenderbuffersEXT"));
-       glRenderbufferStorageEXT = reinterpret_cast<PFNGLRENDERBUFFERSTORAGEEXTPROC>(get_proc_address("glRenderbufferStorageEXT"));
-       glGetRenderbufferParameterivEXT = reinterpret_cast<PFNGLGETRENDERBUFFERPARAMETERIVEXTPROC>(get_proc_address("glGetRenderbufferParameterivEXT"));
-       glIsFramebufferEXT = reinterpret_cast<PFNGLISFRAMEBUFFEREXTPROC>(get_proc_address("glIsFramebufferEXT"));
-       glBindFramebufferEXT = reinterpret_cast<PFNGLBINDFRAMEBUFFEREXTPROC>(get_proc_address("glBindFramebufferEXT"));
-       glDeleteFramebuffersEXT = reinterpret_cast<PFNGLDELETEFRAMEBUFFERSEXTPROC>(get_proc_address("glDeleteFramebuffersEXT"));
-       glGenFramebuffersEXT = reinterpret_cast<PFNGLGENFRAMEBUFFERSEXTPROC>(get_proc_address("glGenFramebuffersEXT"));
-       glCheckFramebufferStatusEXT = reinterpret_cast<PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC>(get_proc_address("glCheckFramebufferStatusEXT"));
-       glFramebufferTexture1DEXT = reinterpret_cast<PFNGLFRAMEBUFFERTEXTURE1DEXTPROC>(get_proc_address("glFramebufferTexture1DEXT"));
-       glFramebufferTexture2DEXT = reinterpret_cast<PFNGLFRAMEBUFFERTEXTURE2DEXTPROC>(get_proc_address("glFramebufferTexture2DEXT"));
-       glFramebufferTexture3DEXT = reinterpret_cast<PFNGLFRAMEBUFFERTEXTURE3DEXTPROC>(get_proc_address("glFramebufferTexture3DEXT"));
-       glFramebufferRenderbufferEXT = reinterpret_cast<PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC>(get_proc_address("glFramebufferRenderbufferEXT"));
-       glGetFramebufferAttachmentParameterivEXT = reinterpret_cast<PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVEXTPROC>(get_proc_address("glGetFramebufferAttachmentParameterivEXT"));
-       glGenerateMipmapEXT = reinterpret_cast<PFNGLGENERATEMIPMAPEXTPROC>(get_proc_address("glGenerateMipmapEXT"));
+       if(is_version_at_least(3, 0) || is_supported("GL_ARB_framebuffer_object"))
+       {
+               glBindFramebuffer = reinterpret_cast<PFNGLBINDFRAMEBUFFERPROC>(get_proc_address("glBindFramebuffer"));
+               glBindRenderbuffer = reinterpret_cast<PFNGLBINDRENDERBUFFERPROC>(get_proc_address("glBindRenderbuffer"));
+               glCheckFramebufferStatus = reinterpret_cast<PFNGLCHECKFRAMEBUFFERSTATUSPROC>(get_proc_address("glCheckFramebufferStatus"));
+               glDeleteFramebuffers = reinterpret_cast<PFNGLDELETEFRAMEBUFFERSPROC>(get_proc_address("glDeleteFramebuffers"));
+               glDeleteRenderbuffers = reinterpret_cast<PFNGLDELETERENDERBUFFERSPROC>(get_proc_address("glDeleteRenderbuffers"));
+               glFramebufferRenderbuffer = reinterpret_cast<PFNGLFRAMEBUFFERRENDERBUFFERPROC>(get_proc_address("glFramebufferRenderbuffer"));
+               glFramebufferTexture1D = reinterpret_cast<PFNGLFRAMEBUFFERTEXTURE1DPROC>(get_proc_address("glFramebufferTexture1D"));
+               glFramebufferTexture2D = reinterpret_cast<PFNGLFRAMEBUFFERTEXTURE2DPROC>(get_proc_address("glFramebufferTexture2D"));
+               glFramebufferTexture3D = reinterpret_cast<PFNGLFRAMEBUFFERTEXTURE3DPROC>(get_proc_address("glFramebufferTexture3D"));
+               glGenFramebuffers = reinterpret_cast<PFNGLGENFRAMEBUFFERSPROC>(get_proc_address("glGenFramebuffers"));
+               glGenRenderbuffers = reinterpret_cast<PFNGLGENRENDERBUFFERSPROC>(get_proc_address("glGenRenderbuffers"));
+               glGenerateMipmap = reinterpret_cast<PFNGLGENERATEMIPMAPPROC>(get_proc_address("glGenerateMipmap"));
+               glGetFramebufferAttachmentParameteriv = reinterpret_cast<PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVPROC>(get_proc_address("glGetFramebufferAttachmentParameteriv"));
+               glGetRenderbufferParameteriv = reinterpret_cast<PFNGLGETRENDERBUFFERPARAMETERIVPROC>(get_proc_address("glGetRenderbufferParameteriv"));
+               glIsFramebuffer = reinterpret_cast<PFNGLISFRAMEBUFFERPROC>(get_proc_address("glIsFramebuffer"));
+               glIsRenderbuffer = reinterpret_cast<PFNGLISRENDERBUFFERPROC>(get_proc_address("glIsRenderbuffer"));
+               glRenderbufferStorage = reinterpret_cast<PFNGLRENDERBUFFERSTORAGEPROC>(get_proc_address("glRenderbufferStorage"));
+               return Extension::CORE;
+       }
+       if(is_supported("GL_EXT_framebuffer_object"))
+       {
+               glBindFramebuffer = reinterpret_cast<PFNGLBINDFRAMEBUFFERPROC>(get_proc_address("glBindFramebufferEXT"));
+               glBindRenderbuffer = reinterpret_cast<PFNGLBINDRENDERBUFFERPROC>(get_proc_address("glBindRenderbufferEXT"));
+               glCheckFramebufferStatus = reinterpret_cast<PFNGLCHECKFRAMEBUFFERSTATUSPROC>(get_proc_address("glCheckFramebufferStatusEXT"));
+               glDeleteFramebuffers = reinterpret_cast<PFNGLDELETEFRAMEBUFFERSPROC>(get_proc_address("glDeleteFramebuffersEXT"));
+               glDeleteRenderbuffers = reinterpret_cast<PFNGLDELETERENDERBUFFERSPROC>(get_proc_address("glDeleteRenderbuffersEXT"));
+               glFramebufferRenderbuffer = reinterpret_cast<PFNGLFRAMEBUFFERRENDERBUFFERPROC>(get_proc_address("glFramebufferRenderbufferEXT"));
+               glFramebufferTexture1D = reinterpret_cast<PFNGLFRAMEBUFFERTEXTURE1DPROC>(get_proc_address("glFramebufferTexture1DEXT"));
+               glFramebufferTexture2D = reinterpret_cast<PFNGLFRAMEBUFFERTEXTURE2DPROC>(get_proc_address("glFramebufferTexture2DEXT"));
+               glFramebufferTexture3D = reinterpret_cast<PFNGLFRAMEBUFFERTEXTURE3DPROC>(get_proc_address("glFramebufferTexture3DEXT"));
+               glGenFramebuffers = reinterpret_cast<PFNGLGENFRAMEBUFFERSPROC>(get_proc_address("glGenFramebuffersEXT"));
+               glGenRenderbuffers = reinterpret_cast<PFNGLGENRENDERBUFFERSPROC>(get_proc_address("glGenRenderbuffersEXT"));
+               glGenerateMipmap = reinterpret_cast<PFNGLGENERATEMIPMAPPROC>(get_proc_address("glGenerateMipmapEXT"));
+               glGetFramebufferAttachmentParameteriv = reinterpret_cast<PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVPROC>(get_proc_address("glGetFramebufferAttachmentParameterivEXT"));
+               glGetRenderbufferParameteriv = reinterpret_cast<PFNGLGETRENDERBUFFERPARAMETERIVPROC>(get_proc_address("glGetRenderbufferParameterivEXT"));
+               glIsFramebuffer = reinterpret_cast<PFNGLISFRAMEBUFFERPROC>(get_proc_address("glIsFramebufferEXT"));
+               glIsRenderbuffer = reinterpret_cast<PFNGLISRENDERBUFFERPROC>(get_proc_address("glIsRenderbufferEXT"));
+               glRenderbufferStorage = reinterpret_cast<PFNGLRENDERBUFFERSTORAGEPROC>(get_proc_address("glRenderbufferStorageEXT"));
+               return Extension::EXTENSION;
+       }
+       return Extension::UNSUPPORTED;
 }
 
+Extension EXT_framebuffer_object("GL_EXT_framebuffer_object", init_ext_framebuffer_object);
+
 } // namespace GL
 } // namespace Msp