mesa: Treat glBindRenderbuffer and glBindRenderbufferEXT correctly

Allow user-generated names for glBindRenderbufferEXT on desktop GL.
Disallow its use altogether for core profiles.

v2: Disallow glBindRenderbufferEXT in 3.1 by not installing it in the
dispatch table.  Suggested by Jordan.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org> [v1]
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> [v1]
Cc: mesa-stable@lists.freedesktop.org

src/mapi/glapi/gen/EXT_framebuffer_object.xml

@@ -78,7 +78,7 @@
 	<return type="GLboolean"/>
     </function>
 
-    <function name="BindRenderbufferEXT" offset="assign">
+    <function name="BindRenderbufferEXT" offset="assign" deprecated="3.1">
         <param name="target" type="GLenum"/>
         <param name="renderbuffer" type="GLuint"/>
         <glx rop="4316"/>

src/mesa/main/fbobject.c

@@ -1104,8 +1104,8 @@ _mesa_IsRenderbuffer(GLuint renderbuffer)
 }
 
 
-void GLAPIENTRY
-_mesa_BindRenderbuffer(GLenum target, GLuint renderbuffer)
+static void
+bind_renderbuffer(GLenum target, GLuint renderbuffer, bool allow_user_names)
 {
    struct gl_renderbuffer *newRb;
    GET_CURRENT_CONTEXT(ctx);
@@ -1125,9 +1125,7 @@ _mesa_BindRenderbuffer(GLenum target, GLuint renderbuffer)
          /* ID was reserved, but no real renderbuffer object made yet */
          newRb = NULL;
       }
-      else if (!newRb
-               && _mesa_is_desktop_gl(ctx)
-               && ctx->Extensions.ARB_framebuffer_object) {
+      else if (!newRb && !allow_user_names) {
          /* All RB IDs must be Gen'd */
          _mesa_error(ctx, GL_INVALID_OPERATION, "glBindRenderbuffer(buffer)");
          return;
@@ -1154,11 +1152,25 @@ _mesa_BindRenderbuffer(GLenum target, GLuint renderbuffer)
    _mesa_reference_renderbuffer(&ctx->CurrentRenderbuffer, newRb);
 }
 
+void GLAPIENTRY
+_mesa_BindRenderbuffer(GLenum target, GLuint renderbuffer)
+{
+   GET_CURRENT_CONTEXT(ctx);
+
+   /* OpenGL ES glBindRenderbuffer and glBindRenderbufferOES use this same
+    * entry point, but they allow the use of user-generated names.
+    */
+   bind_renderbuffer(target, renderbuffer, _mesa_is_gles(ctx));
+}
 
 void GLAPIENTRY
 _mesa_BindRenderbufferEXT(GLenum target, GLuint renderbuffer)
 {
-    _mesa_BindRenderbuffer(target, renderbuffer);
+   /* This function should not be in the dispatch table for core profile /
+    * OpenGL 3.1, so execution should never get here in those cases -- no
+    * need for an explicit test.
+    */
+   bind_renderbuffer(target, renderbuffer, true);
 }
 
 

src/mesa/main/tests/dispatch_sanity.cpp

@@ -529,7 +529,6 @@ const struct function gl_core_functions_possible[] = {
 
    /* GL_EXT_framebuffer_object */
    { "glBindFramebufferEXT", 31, -1 },
-   { "glBindRenderbufferEXT", 31, -1 },
 
    /* GL 3.2 */
    { "glGetInteger64i_v", 32, -1 },