Add enums and functions for GL_{MESA,EXT}_texture_array.

include/GL/gl.h

@@ -2209,6 +2209,34 @@ GLAPI void GLAPIENTRY glGetProgramRegisterfvMESA(GLenum target, GLsizei len, con
 #endif /* GL_MESA_program_debug */
 
 
+#ifndef GL_MESA_texture_array
+#define GL_MESA_texture_array 1
+
+/* GL_MESA_texture_array uses the same enum values as GL_EXT_texture_array.
+ */
+#ifndef GL_EXT_texture_array
+
+#ifdef GL_GLEXT_PROTOTYPES
+GLAPI void APIENTRY glFramebufferTextureLayerEXT(GLenum target,
+    GLenum attachment, GLuint texture, GLint level, GLint layer);
+#endif /* GL_GLEXT_PROTOTYPES */
+
+typedef void (APIENTRYP PFNGLFRAMEBUFFERTEXTURELAYEREXTPROC) (GLenum target,
+    GLenum attachment, GLuint texture, GLint level, GLint layer);
+
+#define GL_TEXTURE_1D_ARRAY_EXT         0x8C18
+#define GL_PROXY_TEXTURE_1D_ARRAY_EXT   0x8C19
+#define GL_TEXTURE_2D_ARRAY_EXT         0x8C1A
+#define GL_PROXY_TEXTURE_2D_ARRAY_EXT   0x8C1B
+#define GL_TEXTURE_BINDING_1D_ARRAY_EXT 0x8C1C
+#define GL_TEXTURE_BINDING_2D_ARRAY_EXT 0x8C1D
+#define GL_MAX_ARRAY_TEXTURE_LAYERS_EXT 0x88FF
+#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LAYER_EXT 0x8CD4
+#endif
+
+#endif
+
+
 #ifndef GL_ATI_blend_equation_separate
 #define GL_ATI_blend_equation_separate 1