- if (!exec->vtx.buffer_map)
- exec->vtx.buffer_map =
- (GLfloat *)ctx->Driver.MapBuffer(ctx, target, access, exec->vtx.bufferobj);
- assert(exec->vtx.buffer_map);
- exec->vtx.buffer_ptr = exec->vtx.buffer_map;
+ }
+ else {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "VBO allocation");
+ exec->vtx.buffer_map = NULL;
+ }
+ }
+
+ exec->vtx.buffer_ptr = exec->vtx.buffer_map;
+
+ if (!exec->vtx.buffer_map) {
+ /* out of memory */
+ _mesa_install_exec_vtxfmt( ctx, &exec->vtxfmt_noop );
+ }
+ else {
+ if (_mesa_using_noop_vtxfmt(ctx->Exec)) {
+ /* The no-op functions are installed so switch back to regular
+ * functions. We do this test just to avoid frequent and needless
+ * calls to _mesa_install_exec_vtxfmt().
+ */
+ _mesa_install_exec_vtxfmt(ctx, &exec->vtxfmt);
+ }