st/mesa: expose new transform feedback extensions

src/mesa/state_tracker/st_extensions.c

@@ -355,6 +355,7 @@ void st_init_extensions(struct st_context *st)
       { o(ARB_shadow),                       PIPE_CAP_TEXTURE_SHADOW_MAP               },
       { o(ARB_texture_non_power_of_two),     PIPE_CAP_NPOT_TEXTURES                    },
       { o(ARB_transform_feedback2),          PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME       },
+      { o(ARB_transform_feedback3),          PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME       },
 
       { o(EXT_blend_equation_separate),      PIPE_CAP_BLEND_EQUATION_SEPARATE          },
       { o(EXT_draw_buffers2),                PIPE_CAP_INDEP_BLEND_ENABLE               },
@@ -641,4 +642,9 @@ void st_init_extensions(struct st_context *st)
        screen->get_param(screen, PIPE_CAP_QUERY_TIMESTAMP)) {
       ctx->Extensions.ARB_timer_query = GL_TRUE;
    }
+
+   if (ctx->Extensions.ARB_transform_feedback2 &&
+       ctx->Extensions.ARB_draw_instanced) {
+      ctx->Extensions.ARB_transform_feedback_instanced = GL_TRUE;
+   }
 }