added GL_EXT_framebuffer_blit from trunk

include/GL/gl.h

@@ -2260,6 +2260,28 @@ typedef void (APIENTRYP PFNGLGETQUERYOBJECTUI64VEXTPROC) (GLuint id, GLenum pnam
 
 
 
+#ifndef GL_EXT_framebuffer_blit
+#define GL_EXT_framebuffer_blit 1
+
+#define GL_READ_FRAMEBUFFER_EXT                0x8CA8
+#define GL_DRAW_FRAMEBUFFER_EXT                0x8CA9
+#define GL_DRAW_FRAMEBUFFER_BINDING_EXT        0x8CA6
+#define GL_READ_FRAMEBUFFER_BINDING_EXT        0x8CAA
+
+GLAPI void GLAPIENTRY
+glBlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
+                     GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
+                     GLbitfield mask, GLenum filter);
+
+typedef void (APIENTRYP PFNGLBLITFRAMEBUFFEREXTPROC)
+        (GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
+         GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
+         GLbitfield mask, GLenum filter);
+
+#endif /* GL_EXT_framebuffer_blit */
+
+
+
 #ifndef GL_EXT_packed_depth_stencil
 #define GL_EXT_packed_depth_stencil 1