Split GL binding init into core and extension part

This change splits the GL binding initialization into to phases: core
functions and extension functions. This is motivated by two
peculiarities of the EGL window binding layer:

  1. Pointers to core GL entry points may not be queried through
     eglGetProcAddress().

  2. The return value of eglGetProcAddress() is not specified to be NULL
     for unsupported functions.

In light of these limitations, the current strategy of blindly querying
all GL entry points from eglGetProcAddress() and falling back to dlsym()
results in bogus function pointers on some EGL implementations.

This patch fixes the problem as follows:

  1. Add GetGLCoreProcAddress() that only queries dlsym() and use it to
     initialize pointers to all entry points. On EGL based platforms
     pointers to extension functions will most likely be NULL at this
     point.

  2. When a context is first made current, look up the set of supported
     extensions and use GetGLProcAddress() to populate the remaining
     extension function pointers.

The reworked GL bindings generator uses the standard Khronos headers to
recognize the extension functions and produce appropriate initialization
code.

Note that the patch also updates gl2ext.h to match the upstream Khronos
version and corrects some minor errors in the downstream changes.

BUG=5427391
TEST=

Review URL: http://codereview.chromium.org/8381001
Patch from Sami Kyostila <skyostil@chromium.org>.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@107602 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 364 insertions, 40 deletions

diff --git a/gpu/GLES2/gl2ext.h b/gpu/GLES2/gl2ext.h
index 4bd49c8..e5b46b1 100644
--- a/gpu/GLES2/gl2ext.h
+++ b/gpu/GLES2/gl2ext.h
@@ -1,7 +1,7 @@
 #ifndef __gl2ext_h_
 #define __gl2ext_h_
 
-/* $Revision: 10969 $ on $Date:: 2010-04-09 02:27:15 -0700 #$ */
+/* $Revision: 15049 $ on $Date:: 2011-07-06 17:28:16 -0700 #$ */
 
 #ifdef __cplusplus
 extern "C" {
@@ -57,6 +57,15 @@ extern "C" {
 typedef void* GLeglImageOES;
 #endif
 
+/* GL_OES_EGL_image_external */
+#ifndef GL_OES_EGL_image_external
+/* GLeglImageOES defined in GL_OES_EGL_image already. */
+#define GL_TEXTURE_EXTERNAL_OES                                 0x8D65
+#define GL_SAMPLER_EXTERNAL_OES                                 0x8D66
+#define GL_TEXTURE_BINDING_EXTERNAL_OES                         0x8D67
+#define GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES                     0x8D68
+#endif
+
 /* GL_OES_element_index_uint */
 #ifndef GL_OES_element_index_uint
 #define GL_UNSIGNED_INT                                         0x1405
@@ -146,14 +155,6 @@ typedef void* GLeglImageOES;
 #define GL_INT_10_10_10_2_OES                                   0x8DF7
 #endif
 
-/* GL_OES_EGL_image_external */
-#ifndef GL_OES_EGL_image_external
-#define GL_TEXTURE_EXTERNAL_OES                                 0x8D65
-#define GL_SAMPLER_EXTERNAL_OES                                 0x8D66
-#define GL_TEXTURE_BINDING_EXTERNAL_OES                         0x8D67
-#define GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES                     0x8D68
-#endif
-
 /*------------------------------------------------------------------------*
  * AMD extension tokens
  *------------------------------------------------------------------------*/
@@ -188,6 +189,69 @@ typedef void* GLeglImageOES;
 #endif
 
 /*------------------------------------------------------------------------*
+ * ANGLE extension tokens
+ *------------------------------------------------------------------------*/
+
+/* GL_ANGLE_framebuffer_blit */
+#ifndef GL_ANGLE_framebuffer_blit
+#define GL_READ_FRAMEBUFFER_ANGLE                               0x8CA8
+#define GL_DRAW_FRAMEBUFFER_ANGLE                               0x8CA9
+#define GL_DRAW_FRAMEBUFFER_BINDING_ANGLE                       0x8CA6
+#define GL_READ_FRAMEBUFFER_BINDING_ANGLE                       0x8CAA
+#endif
+
+/* GL_ANGLE_framebuffer_multisample */
+#ifndef GL_ANGLE_framebuffer_multisample
+#define GL_RENDERBUFFER_SAMPLES_ANGLE                           0x8CAB
+#define GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_ANGLE             0x8D56
+#define GL_MAX_SAMPLES_ANGLE                                    0x8D57
+#endif
+
+/*------------------------------------------------------------------------*
+ * APPLE extension tokens
+ *------------------------------------------------------------------------*/
+
+/* GL_APPLE_rgb_422 */
+#ifndef GL_APPLE_rgb_422
+#define GL_RGB_422_APPLE                                        0x8A1F
+#define GL_UNSIGNED_SHORT_8_8_APPLE                             0x85BA
+#define GL_UNSIGNED_SHORT_8_8_REV_APPLE                         0x85BB
+#endif
+
+/* GL_APPLE_framebuffer_multisample */
+#ifndef GL_APPLE_framebuffer_multisample
+#define GL_RENDERBUFFER_SAMPLES_APPLE                           0x8CAB
+#define GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_APPLE             0x8D56
+#define GL_MAX_SAMPLES_APPLE                                    0x8D57
+#define GL_READ_FRAMEBUFFER_APPLE                               0x8CA8
+#define GL_DRAW_FRAMEBUFFER_APPLE                               0x8CA9
+#define GL_DRAW_FRAMEBUFFER_BINDING_APPLE                       0x8CA6
+#define GL_READ_FRAMEBUFFER_BINDING_APPLE                       0x8CAA
+#endif
+
+/* GL_APPLE_texture_format_BGRA8888 */
+#ifndef GL_APPLE_texture_format_BGRA8888
+#define GL_BGRA_EXT                                             0x80E1
+#endif
+
+/* GL_APPLE_texture_max_level */
+#ifndef GL_APPLE_texture_max_level
+#define GL_TEXTURE_MAX_LEVEL_APPLE                              0x813D
+#endif
+
+/*------------------------------------------------------------------------*
+ * ARM extension tokens
+ *------------------------------------------------------------------------*/
+
+/* GL_ARM_mali_shader_binary */
+#ifndef GL_ARM_mali_shader_binary
+#define GL_MALI_SHADER_BINARY_ARM                               0x8F60
+#endif
+
+/* GL_ARM_rgba8 */
+/* No new tokens introduced by this extension. */
+
+/*------------------------------------------------------------------------*
  * EXT extension tokens
  *------------------------------------------------------------------------*/
 
@@ -214,6 +278,9 @@ typedef void* GLeglImageOES;
 #define GL_UNSIGNED_SHORT_1_5_5_5_REV_EXT                       0x8366
 #endif
 
+/* GL_EXT_shader_texture_lod */
+/* No new tokens introduced by this extension. */
+
 /* GL_EXT_texture_filter_anisotropic */
 #ifndef GL_EXT_texture_filter_anisotropic
 #define GL_TEXTURE_MAX_ANISOTROPY_EXT                           0x84FE
@@ -236,6 +303,22 @@ typedef void* GLeglImageOES;
 #define GL_COMPRESSED_RGBA_S3TC_DXT1_EXT                        0x83F1
 #endif
 
+/* GL_EXT_unpack_subimage */
+#ifndef GL_EXT_unpack_subimage
+#define GL_UNPACK_ROW_LENGTH                                    0x0CF2
+#define GL_UNPACK_SKIP_ROWS                                     0x0CF3
+#define GL_UNPACK_SKIP_PIXELS                                   0x0CF4
+#endif
+
+/*------------------------------------------------------------------------*
+ * DMP extension tokens
+ *------------------------------------------------------------------------*/
+
+/* GL_DMP_shader_binary */
+#ifndef GL_DMP_shader_binary
+#define GL_SHADER_BINARY_DMP                                    0x9250
+#endif
+
 /*------------------------------------------------------------------------*
  * IMG extension tokens
  *------------------------------------------------------------------------*/
@@ -276,13 +359,6 @@ typedef void* GLeglImageOES;
  * NV extension tokens
  *------------------------------------------------------------------------*/
 
-/* GL_NV_fence */
-#ifndef GL_NV_fence
-#define GL_ALL_COMPLETED_NV                                     0x84F2
-#define GL_FENCE_STATUS_NV                                      0x84F3
-#define GL_FENCE_CONDITION_NV                                   0x84F4
-#endif
-
 /* GL_NV_coverage_sample */
 #ifndef GL_NV_coverage_sample
 #define GL_COVERAGE_COMPONENT_NV                                0x8ED0
@@ -301,10 +377,90 @@ typedef void* GLeglImageOES;
 #define GL_DEPTH_COMPONENT16_NONLINEAR_NV                       0x8E2C
 #endif
 
+/* GL_NV_draw_buffers */
+#ifndef GL_NV_draw_buffers
+#define GL_MAX_DRAW_BUFFERS_NV                                  0x8824
+#define GL_DRAW_BUFFER0_NV                                      0x8825
+#define GL_DRAW_BUFFER1_NV                                      0x8826
+#define GL_DRAW_BUFFER2_NV                                      0x8827
+#define GL_DRAW_BUFFER3_NV                                      0x8828
+#define GL_DRAW_BUFFER4_NV                                      0x8829
+#define GL_DRAW_BUFFER5_NV                                      0x882A
+#define GL_DRAW_BUFFER6_NV                                      0x882B
+#define GL_DRAW_BUFFER7_NV                                      0x882C
+#define GL_DRAW_BUFFER8_NV                                      0x882D
+#define GL_DRAW_BUFFER9_NV                                      0x882E
+#define GL_DRAW_BUFFER10_NV                                     0x882F
+#define GL_DRAW_BUFFER11_NV                                     0x8830
+#define GL_DRAW_BUFFER12_NV                                     0x8831
+#define GL_DRAW_BUFFER13_NV                                     0x8832
+#define GL_DRAW_BUFFER14_NV                                     0x8833
+#define GL_DRAW_BUFFER15_NV                                     0x8834
+#define GL_COLOR_ATTACHMENT0_NV                                 0x8CE0
+#define GL_COLOR_ATTACHMENT1_NV                                 0x8CE1
+#define GL_COLOR_ATTACHMENT2_NV                                 0x8CE2
+#define GL_COLOR_ATTACHMENT3_NV                                 0x8CE3
+#define GL_COLOR_ATTACHMENT4_NV                                 0x8CE4
+#define GL_COLOR_ATTACHMENT5_NV                                 0x8CE5
+#define GL_COLOR_ATTACHMENT6_NV                                 0x8CE6
+#define GL_COLOR_ATTACHMENT7_NV                                 0x8CE7
+#define GL_COLOR_ATTACHMENT8_NV                                 0x8CE8
+#define GL_COLOR_ATTACHMENT9_NV                                 0x8CE9
+#define GL_COLOR_ATTACHMENT10_NV                                0x8CEA
+#define GL_COLOR_ATTACHMENT11_NV                                0x8CEB
+#define GL_COLOR_ATTACHMENT12_NV                                0x8CEC
+#define GL_COLOR_ATTACHMENT13_NV                                0x8CED
+#define GL_COLOR_ATTACHMENT14_NV                                0x8CEE
+#define GL_COLOR_ATTACHMENT15_NV                                0x8CEF
+#endif
+
+/* GL_NV_fbo_color_attachments */
+#ifndef GL_NV_fbo_color_attachments
+#define GL_MAX_COLOR_ATTACHMENTS_NV                             0x8CDF
+/* GL_COLOR_ATTACHMENT{0-15}_NV defined in GL_NV_draw_buffers already. */
+#endif
+
+/* GL_NV_fence */
+#ifndef GL_NV_fence
+#define GL_ALL_COMPLETED_NV                                     0x84F2
+#define GL_FENCE_STATUS_NV                                      0x84F3
+#define GL_FENCE_CONDITION_NV                                   0x84F4
+#endif
+
+/* GL_NV_read_buffer */
+#ifndef GL_NV_read_buffer
+#define GL_READ_BUFFER_NV                                       0x0C02
+#endif
+
+/* GL_NV_read_buffer_front */
+/* No new tokens introduced by this extension. */
+
+/* GL_NV_read_depth */
+/* No new tokens introduced by this extension. */
+
+/* GL_NV_read_depth_stencil */
+/* No new tokens introduced by this extension. */
+
+/* GL_NV_read_stencil */
+/* No new tokens introduced by this extension. */
+
+/* GL_NV_texture_compression_s3tc_update */
+/* No new tokens introduced by this extension. */
+
+/* GL_NV_texture_npot_2D_mipmap */
+/* No new tokens introduced by this extension. */
+
 /*------------------------------------------------------------------------*
  * QCOM extension tokens
  *------------------------------------------------------------------------*/
 
+/* GL_QCOM_alpha_test */
+#ifndef GL_QCOM_alpha_test
+#define GL_ALPHA_TEST_QCOM                                      0x0BC0
+#define GL_ALPHA_TEST_FUNC_QCOM                                 0x0BC1
+#define GL_ALPHA_TEST_REF_QCOM                                  0x0BC2
+#endif
+
 /* GL_QCOM_driver_control */
 /* No new tokens introduced by this extension. */
 
@@ -373,10 +529,17 @@ typedef void* GLeglImageOES;
 #endif
 
 /*------------------------------------------------------------------------*
- * End of extension tokens, start of corresponding extension functions
+ * VIV extension tokens
  *------------------------------------------------------------------------*/
 
+/* GL_VIV_shader_binary */
+#ifndef GL_VIV_shader_binary
+#define GL_SHADER_BINARY_VIV                                    0x8FC4
+#endif
 
+/*------------------------------------------------------------------------*
+ * End of extension tokens, start of corresponding extension functions
+ *------------------------------------------------------------------------*/
 
 /*------------------------------------------------------------------------*
  * OES extension functions
@@ -418,6 +581,12 @@ typedef void (GL_APIENTRYP PFNGLEGLIMAGETARGETTEXTURE2DOESPROC) (GLenum target,
 typedef void (GL_APIENTRYP PFNGLEGLIMAGETARGETRENDERBUFFERSTORAGEOESPROC) (GLenum target, GLeglImageOES image);
 #endif
 
+/* GL_OES_EGL_image_external */
+#ifndef GL_OES_EGL_image_external
+#define GL_OES_EGL_image_external 1
+/* glEGLImageTargetTexture2DOES defined in GL_OES_EGL_image already. */
+#endif
+
 /* GL_OES_element_index_uint */
 #ifndef GL_OES_element_index_uint
 #define GL_OES_element_index_uint 1
@@ -551,11 +720,6 @@ typedef GLboolean (GL_APIENTRYP PFNGLISVERTEXARRAYOESPROC) (GLuint array);
 #define GL_OES_vertex_type_10_10_10_2 1
 #endif
 
-/* GL_OES_EGL_image_external */
-#ifndef GL_OES_EGL_image_external
-#define GL_OES_EGL_image_external 1
-#endif
-
 /*------------------------------------------------------------------------*
  * AMD extension functions
  *------------------------------------------------------------------------*/
@@ -605,6 +769,72 @@ typedef void (GL_APIENTRYP PFNGLGETPERFMONITORCOUNTERDATAAMDPROC) (GLuint monito
 #endif
 
 /*------------------------------------------------------------------------*
+ * ANGLE extension functions
+ *------------------------------------------------------------------------*/
+
+/* GL_ANGLE_framebuffer_blit */
+#ifndef GL_ANGLE_framebuffer_blit
+#define GL_ANGLE_framebuffer_blit 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glBlitFramebufferANGLE (GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter);
+#endif
+typedef void (GL_APIENTRYP PFNGLBLITFRAMEBUFFERANGLEPROC) (GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter);
+#endif
+
+/* GL_ANGLE_framebuffer_multisample */
+#ifndef GL_ANGLE_framebuffer_multisample
+#define GL_ANGLE_framebuffer_multisample 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glRenderbufferStorageMultisampleANGLE (GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height);
+#endif
+typedef void (GL_APIENTRYP PFNGLRENDERBUFFERSTORAGEMULTISAMPLEANGLEPROC) (GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height);
+#endif
+
+/*------------------------------------------------------------------------*
+ * APPLE extension functions
+ *------------------------------------------------------------------------*/
+
+/* GL_APPLE_rgb_422 */
+#ifndef GL_APPLE_rgb_422
+#define GL_APPLE_rgb_422 1
+#endif
+
+/* GL_APPLE_framebuffer_multisample */
+#ifndef GL_APPLE_framebuffer_multisample
+#define GL_APPLE_framebuffer_multisample 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glRenderbufferStorageMultisampleAPPLE (GLenum, GLsizei, GLenum, GLsizei, GLsizei);
+GL_APICALL void GL_APIENTRY glResolveMultisampleFramebufferAPPLE (void);
+#endif /* GL_GLEXT_PROTOTYPES */
+typedef void (GL_APIENTRYP PFNGLRENDERBUFFERSTORAGEMULTISAMPLEAPPLEPROC) (GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height);
+typedef void (GL_APIENTRYP PFNGLRESOLVEMULTISAMPLEFRAMEBUFFERAPPLEPROC) (void);
+#endif
+
+/* GL_APPLE_texture_format_BGRA8888 */
+#ifndef GL_APPLE_texture_format_BGRA8888
+#define GL_APPLE_texture_format_BGRA8888 1
+#endif
+
+/* GL_APPLE_texture_max_level */
+#ifndef GL_APPLE_texture_max_level
+#define GL_APPLE_texture_max_level 1
+#endif
+
+/*------------------------------------------------------------------------*
+ * ARM extension functions
+ *------------------------------------------------------------------------*/
+
+/* GL_ARM_mali_shader_binary */
+#ifndef GL_ARM_mali_shader_binary
+#define GL_ARM_mali_shader_binary 1
+#endif
+
+/* GL_ARM_rgba8 */
+#ifndef GL_ARM_rgba8
+#define GL_ARM_rgba8 1
+#endif
+
+/*------------------------------------------------------------------------*
  * EXT extension functions
  *------------------------------------------------------------------------*/
 
@@ -637,6 +867,11 @@ typedef void (GL_APIENTRYP PFNGLMULTIDRAWELEMENTSEXTPROC) (GLenum mode, const GL
 #define GL_EXT_read_format_bgra 1
 #endif
 
+/* GL_EXT_shader_texture_lod */
+#ifndef GL_EXT_shader_texture_lod
+#define GL_EXT_shader_texture_lod 1
+#endif
+
 /* GL_EXT_texture_filter_anisotropic */
 #ifndef GL_EXT_texture_filter_anisotropic
 #define GL_EXT_texture_filter_anisotropic 1
@@ -657,6 +892,20 @@ typedef void (GL_APIENTRYP PFNGLMULTIDRAWELEMENTSEXTPROC) (GLenum mode, const GL
 #define GL_EXT_texture_compression_dxt1 1
 #endif
 
+/* GL_EXT_unpack_subimage */
+#ifndef GL_EXT_unpack_subimage
+#define GL_EXT_unpack_subimage 1
+#endif
+
+/*------------------------------------------------------------------------*
+ * DMP extension functions
+ *------------------------------------------------------------------------*/
+
+/* GL_DMP_shader_binary */
+#ifndef GL_DMP_shader_binary
+#define GL_DMP_shader_binary 1
+#endif
+
 /*------------------------------------------------------------------------*
  * IMG extension functions
  *------------------------------------------------------------------------*/
@@ -689,13 +938,43 @@ GL_APICALL void GL_APIENTRY glRenderbufferStorageMultisampleIMG (GLenum, GLsizei
 GL_APICALL void GL_APIENTRY glFramebufferTexture2DMultisampleIMG (GLenum, GLenum, GLenum, GLuint, GLint, GLsizei);
 #endif
 typedef void (GL_APIENTRYP PFNGLRENDERBUFFERSTORAGEMULTISAMPLEIMG) (GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height);
-typedef void (GL_APIENTRYP PFNGLCLIPPLANEXIMG) (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level, GLsizei samples);
+typedef void (GL_APIENTRYP PFNGLFRAMEBUFFERTEXTURE2DMULTISAMPLEIMG) (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level, GLsizei samples);
 #endif
 
 /*------------------------------------------------------------------------*
  * NV extension functions
  *------------------------------------------------------------------------*/
 
+/* GL_NV_coverage_sample */
+#ifndef GL_NV_coverage_sample
+#define GL_NV_coverage_sample 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glCoverageMaskNV (GLboolean mask);
+GL_APICALL void GL_APIENTRY glCoverageOperationNV (GLenum operation);
+#endif
+typedef void (GL_APIENTRYP PFNGLCOVERAGEMASKNVPROC) (GLboolean mask);
+typedef void (GL_APIENTRYP PFNGLCOVERAGEOPERATIONNVPROC) (GLenum operation);
+#endif
+
+/* GL_NV_depth_nonlinear */
+#ifndef GL_NV_depth_nonlinear
+#define GL_NV_depth_nonlinear 1
+#endif
+
+/* GL_NV_draw_buffers */
+#ifndef GL_NV_draw_buffers
+#define GL_NV_draw_buffers 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glDrawBuffersNV (GLsizei n, const GLenum *bufs);
+#endif
+typedef void (GL_APIENTRYP PFNGLDRAWBUFFERSNVPROC) (GLsizei n, const GLenum *bufs);
+#endif
+
+/* GL_NV_fbo_color_attachments */
+#ifndef GL_NV_fbo_color_attachments
+#define GL_NV_fbo_color_attachments 1
+#endif
+
 /* GL_NV_fence */
 #ifndef GL_NV_fence
 #define GL_NV_fence 1
@@ -717,26 +996,58 @@ typedef void (GL_APIENTRYP PFNGLFINISHFENCENVPROC) (GLuint fence);
 typedef void (GL_APIENTRYP PFNGLSETFENCENVPROC) (GLuint fence, GLenum condition);
 #endif
 
-/* GL_NV_coverage_sample */
-#ifndef GL_NV_coverage_sample
-#define GL_NV_coverage_sample 1
+/* GL_NV_read_buffer */
+#ifndef GL_NV_read_buffer
+#define GL_NV_read_buffer 1
 #ifdef GL_GLEXT_PROTOTYPES
-GL_APICALL void GL_APIENTRY glCoverageMaskNV (GLboolean mask);
-GL_APICALL void GL_APIENTRY glCoverageOperationNV (GLenum operation);
+GL_APICALL void GL_APIENTRY glReadBufferNV (GLenum mode);
 #endif
-typedef void (GL_APIENTRYP PFNGLCOVERAGEMASKNVPROC) (GLboolean mask);
-typedef void (GL_APIENTRYP PFNGLCOVERAGEOPERATIONNVPROC) (GLenum operation);
+typedef void (GL_APIENTRYP PFNGLREADBUFFERNVPROC) (GLenum mode);
 #endif
 
-/* GL_NV_depth_nonlinear */
-#ifndef GL_NV_depth_nonlinear
-#define GL_NV_depth_nonlinear 1
+/* GL_NV_read_buffer_front */
+#ifndef GL_NV_read_buffer_front
+#define GL_NV_read_buffer_front 1
+#endif
+
+/* GL_NV_read_depth */
+#ifndef GL_NV_read_depth
+#define GL_NV_read_depth 1
+#endif
+
+/* GL_NV_read_depth_stencil */
+#ifndef GL_NV_read_depth_stencil
+#define GL_NV_read_depth_stencil 1
+#endif
+
+/* GL_NV_read_stencil */
+#ifndef GL_NV_read_stencil
+#define GL_NV_read_stencil 1
+#endif
+
+/* GL_NV_texture_compression_s3tc_update */
+#ifndef GL_NV_texture_compression_s3tc_update
+#define GL_NV_texture_compression_s3tc_update 1
+#endif
+
+/* GL_NV_texture_npot_2D_mipmap */
+#ifndef GL_NV_texture_npot_2D_mipmap
+#define GL_NV_texture_npot_2D_mipmap 1
 #endif
 
 /*------------------------------------------------------------------------*
  * QCOM extension functions
  *------------------------------------------------------------------------*/
 
+/* GL_QCOM_alpha_test */
+#ifndef GL_QCOM_alpha_test
+#define GL_QCOM_alpha_test 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glAlphaFuncQCOM (GLenum func, GLclampf ref);
+#endif
+typedef void (GL_APIENTRYP PFNGLALPHAFUNCQCOMPROC) (GLenum func, GLclampf ref);
+#endif
+
 /* GL_QCOM_driver_control */
 #ifndef GL_QCOM_driver_control
 #define GL_QCOM_driver_control 1
@@ -811,6 +1122,15 @@ typedef void (GL_APIENTRYP PFNGLSTARTTILINGQCOMPROC) (GLuint x, GLuint y, GLuint
 typedef void (GL_APIENTRYP PFNGLENDTILINGQCOMPROC) (GLbitfield preserveMask);
 #endif
 
+/*------------------------------------------------------------------------*
+ * VIV extension tokens
+ *------------------------------------------------------------------------*/
+
+/* GL_VIV_shader_binary */
+#ifndef GL_VIV_shader_binary
+#define GL_VIV_shader_binary 1
+#endif
+
 /* GL_EXT_framebuffer_multisample */
 #ifndef GL_EXT_framebuffer_multisample
 #define GL_EXT_framebuffer_multisample 1
@@ -871,15 +1191,19 @@ typedef void (GL_APIENTRYP PFNGLENDTILINGQCOMPROC) (GLbitfield preserveMask);
 #endif
 
 #ifdef GL_GLEXT_PROTOTYPES
-#define glBlitFramebufferEXT GLES2_GET_FUN(BlitFramebufferEXT)
 #define glRenderbufferStorageMultisampleEXT GLES2_GET_FUN(RenderbufferStorageMultisampleEXT)
-#if !defined(GLES2_USE_CPP_BINDINGS)
-GL_APICALL void GL_APIENTRY glBlitFramebufferEXT (GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter);
 GL_APICALL void GL_APIENTRY glRenderbufferStorageMultisampleEXT (GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height);
+#endif /* GL_GLEXT_PROTOTYPES */
+typedef void (GL_APIENTRYP PFNGLRENDERBUFFERSTORAGEMULTISAMPLEEXTPROC) (GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height);
 #endif
-#endif
-typedef void (GL_APIENTRY PFNGLBLITFRAMEBUFFEREXT) (GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter);
-typedef void (GL_APIENTRY PFNGLRENDERBUFFERSTORAGEMULTISAMPLEEXT) (GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height);
+
+#ifndef GL_EXT_framebuffer_blit
+#define GL_EXT_framebuffer_blit 1
+#ifdef GL_GLEXT_PROTOTYPES
+#define glBlitFramebufferEXT GLES2_GET_FUN(BlitFramebufferEXT)
+GL_APICALL void GL_APIENTRY glBlitFramebufferEXT (GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter);
+#endif /* GL_GLEXT_PROTOTYPES */
+typedef void (GL_APIENTRYP PFNGLBLITFRAMEBUFFEREXTPROC) (GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter);
 #endif
 
 /* GL_CHROMIUM_map_sub */
@@ -1015,7 +1339,7 @@ typedef void (GL_APIENTRYP PFNGLRATELIMITOFFSCREENCONTEXTCHROMIUM) ();
 #define glGetProgramInfoCHROMIUM  GLES2_GET_FUN(GetProgramInfovCHROMIUM)
 #if !defined(GLES2_USE_CPP_BINDINGS)
 GL_APICALL void GL_APIENTRY glGetMultipleIntegervCHROMIUM (const GLenum* pnames, GLuint count, GLint* results, GLsizeiptr size);
-GL_APICALL void GL_APIENTRY glGetProgrmaInfoCHROMIUM (GLuint program, GLsizei bufsize, GLsizei* size, void* info);
+GL_APICALL void GL_APIENTRY glGetProgramInfoCHROMIUM (GLuint program, GLsizei bufsize, GLsizei* size, void* info);
 #endif
 #else
 typedef void (GL_APIENTRYP PFNGLGETMULTIPLEINTEGERVCHROMIUM) ();