st/mesa: implement GetGraphicsResetStatus

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

src/mesa/state_tracker/st_cb_flush.c

@@ -141,11 +141,44 @@ static void st_glFinish(struct gl_context *ctx)
 }
 
 
-void st_init_flush_functions(struct dd_function_table *functions)
+/**
+ * Query information about GPU resets observed by this context
+ *
+ * Called via \c dd_function_table::GetGraphicsResetStatus.
+ */
+static GLenum
+st_get_graphics_reset_status(struct gl_context *ctx)
+{
+   struct st_context *st = st_context(ctx);
+   enum pipe_reset_status status;
+
+   status = st->pipe->get_device_reset_status(st->pipe);
+
+   switch (status) {
+   case PIPE_NO_RESET:
+      return GL_NO_ERROR;
+   case PIPE_GUILTY_CONTEXT_RESET:
+      return GL_GUILTY_CONTEXT_RESET_ARB;
+   case PIPE_INNOCENT_CONTEXT_RESET:
+      return GL_INNOCENT_CONTEXT_RESET_ARB;
+   case PIPE_UNKNOWN_CONTEXT_RESET:
+      return GL_UNKNOWN_CONTEXT_RESET_ARB;
+   default:
+      assert(0);
+      return GL_NO_ERROR;
+   }
+}
+
+
+void st_init_flush_functions(struct pipe_screen *screen,
+                             struct dd_function_table *functions)
 {
    functions->Flush = st_glFlush;
    functions->Finish = st_glFinish;
 
+   if (screen->get_param(screen, PIPE_CAP_DEVICE_RESET_STATUS_QUERY))
+      functions->GetGraphicsResetStatus = st_get_graphics_reset_status;
+
    /* Windows opengl32.dll calls glFinish prior to every swapbuffers.
     * This is unnecessary and degrades performance.  Luckily we have some
     * scope to work around this, as the externally-visible behaviour of

src/mesa/state_tracker/st_cb_flush.h

@@ -37,7 +37,8 @@ struct pipe_fence_handle;
 struct st_context;
 
 extern void
-st_init_flush_functions(struct dd_function_table *functions);
+st_init_flush_functions(struct pipe_screen *screen,
+                        struct dd_function_table *functions);
 
 extern void
 st_flush(struct st_context *st,

src/mesa/state_tracker/st_context.c

@@ -321,7 +321,7 @@ struct st_context *st_create_context(gl_api api, struct pipe_context *pipe,
    struct st_context *st;
 
    memset(&funcs, 0, sizeof(funcs));
-   st_init_driver_functions(&funcs);
+   st_init_driver_functions(pipe->screen, &funcs);
 
    ctx = _mesa_create_context(api, visual, shareCtx, &funcs);
    if (!ctx) {
@@ -401,7 +401,8 @@ void st_destroy_context( struct st_context *st )
 }
 
 
-void st_init_driver_functions(struct dd_function_table *functions)
+void st_init_driver_functions(struct pipe_screen *screen,
+                              struct dd_function_table *functions)
 {
    _mesa_init_shader_object_functions(functions);
    _mesa_init_sampler_object_functions(functions);
@@ -429,7 +430,7 @@ void st_init_driver_functions(struct dd_function_table *functions)
    st_init_readpixels_functions(functions);
    st_init_texture_functions(functions);
    st_init_texture_barrier_functions(functions);
-   st_init_flush_functions(functions);
+   st_init_flush_functions(screen, functions);
    st_init_string_functions(functions);
    st_init_viewport_functions(functions);
 

src/mesa/state_tracker/st_context.h

@@ -237,7 +237,8 @@ struct st_framebuffer
 };
 
 
-extern void st_init_driver_functions(struct dd_function_table *functions);
+extern void st_init_driver_functions(struct pipe_screen *screen,
+                                     struct dd_function_table *functions);
 
 void st_invalidate_state(struct gl_context * ctx, GLuint new_state);