The definitive source for enum values and reserved ranges are the XML files in
the Khronos registry:

    https://github.com/KhronosGroup/EGL-Registry/blob/master/api/egl.xml
    https://github.com/KhronosGroup/OpenGL-Registry/blob/master/xml/gl.xml
    https://github.com/KhronosGroup/OpenGL-Registry/blob/master/xml/glx.xml
    https://github.com/KhronosGroup/OpenGL-Registry/blob/master/xml/wgl.xml

GL blocks allocated to Mesa:
       0x8750-0x875F
       0x8BB0-0x8BBF

EGL blocks allocated to Mesa:
       0x31D0-0x31DF
       0x3290-0x329F

GL_MESA_packed_depth_stencil
	GL_DEPTH_STENCIL_MESA            0x8750
	GL_UNSIGNED_INT_24_8_MESA        0x8751
	GL_UNSIGNED_INT_8_24_REV_MESA    0x8752
	GL_UNSIGNED_SHORT_15_1_MESA      0x8753
	GL_UNSIGNED_SHORT_1_15_REV_MESA  0x8754

GL_MESA_trace:
	GL_TRACE_ALL_BITS_MESA           0xFFFF
	GL_TRACE_OPERATIONS_BIT_MESA     0x0001
	GL_TRACE_PRIMITIVES_BIT_MESA     0x0002
	GL_TRACE_ARRAYS_BIT_MESA         0x0004
	GL_TRACE_TEXTURES_BIT_MESA       0x0008
	GL_TRACE_PIXELS_BIT_MESA         0x0010
	GL_TRACE_ERRORS_BIT_MESA         0x0020
	GL_TRACE_MASK_MESA               0x8755
	GL_TRACE_NAME_MESA               0x8756

GL_MESA_ycbcr_texture:
	GL_YCBCR_MESA                    0x8757
	GL_UNSIGNED_SHORT_8_8_MESA       0x85BA /* same as Apple's */
	GL_UNSIGNED_SHORT_8_8_REV_MESA   0x85BB /* same as Apple's */

GL_MESA_pack_invert:
	GL_PACK_INVERT_MESA              0x8758

GL_MESA_shader_debug.spec: (obsolete)
        GL_DEBUG_OBJECT_MESA             0x8759
        GL_DEBUG_PRINT_MESA              0x875A
        GL_DEBUG_ASSERT_MESA             0x875B

GL_MESA_program_debug: (obsolete)
	GL_FRAGMENT_PROGRAM_CALLBACK_MESA      0x????
	GL_VERTEX_PROGRAM_CALLBACK_MESA        0x????
	GL_FRAGMENT_PROGRAM_POSITION_MESA      0x????
	GL_VERTEX_PROGRAM_POSITION_MESA        0x????
	GL_FRAGMENT_PROGRAM_CALLBACK_FUNC_MESA 0x????
	GL_FRAGMENT_PROGRAM_CALLBACK_DATA_MESA 0x????
	GL_VERTEX_PROGRAM_CALLBACK_FUNC_MESA   0x????
	GL_VERTEX_PROGRAM_CALLBACK_DATA_MESA   0x????

GL_MESAX_texture_stack:
	GL_TEXTURE_1D_STACK_MESAX            0x8759
	GL_TEXTURE_2D_STACK_MESAX            0x875A
	GL_PROXY_TEXTURE_1D_STACK_MESAX      0x875B
	GL_PROXY_TEXTURE_2D_STACK_MESAX      0x875C
	GL_TEXTURE_1D_STACK_BINDING_MESAX    0x875D
	GL_TEXTURE_2D_STACK_BINDING_MESAX    0x875E

EGL_MESA_drm_image
        EGL_DRM_BUFFER_FORMAT_MESA		0x31D0
        EGL_DRM_BUFFER_USE_MESA			0x31D1
        EGL_DRM_BUFFER_FORMAT_ARGB32_MESA	0x31D2
        EGL_DRM_BUFFER_MESA			0x31D3
        EGL_DRM_BUFFER_STRIDE_MESA		0x31D4

EGL_MESA_platform_gbm
        EGL_PLATFORM_GBM_MESA                   0x31D7

EGL_MESA_platform_surfaceless
        EGL_PLATFORM_SURFACELESS_MESA           0x31DD

EGL_MESA_drm_image
        EGL_DRM_BUFFER_FORMAT_ARGB2101010_MESA  0x3290
        EGL_DRM_BUFFER_FORMAT_ARGB1555_MESA     0x3291
        EGL_DRM_BUFFER_FORMAT_RGB565_MESA       0x3292

EGL_WL_bind_wayland_display
        EGL_TEXTURE_FORMAT                      0x3080
        EGL_WAYLAND_BUFFER_WL                   0x31D5
        EGL_WAYLAND_PLANE_WL                    0x31D6
        EGL_TEXTURE_Y_U_V_WL                    0x31D7
        EGL_TEXTURE_Y_UV_WL                     0x31D8
        EGL_TEXTURE_Y_XUXV_WL                   0x31D9
        EGL_WAYLAND_Y_INVERTED_WL               0x31DB