st/mesa: GenerateMipmap should not be killed by conditional rendering

NOTE: This is a candidate for the 7.10 branch.

Reviewed-by: Brian Paul <brianp@vmware.com>

src/mesa/state_tracker/st_cb_condrender.c

@@ -51,7 +51,8 @@ st_BeginConditionalRender(struct gl_context *ctx, struct gl_query_object *q,
                           GLenum mode)
 {
    struct st_query_object *stq = st_query_object(q);
-   struct pipe_context *pipe = st_context(ctx)->pipe;
+   struct st_context *st = st_context(ctx);
+   struct pipe_context *pipe = st->pipe;
    uint m;
 
    switch (mode) {
@@ -72,6 +73,9 @@ st_BeginConditionalRender(struct gl_context *ctx, struct gl_query_object *q,
       m = PIPE_RENDER_COND_WAIT;
    }
 
+   st->render_condition = stq->pq;
+   st->condition_mode = m;
+
    pipe->render_condition(pipe, stq->pq, m);
 }
 
@@ -82,9 +86,12 @@ st_BeginConditionalRender(struct gl_context *ctx, struct gl_query_object *q,
 static void
 st_EndConditionalRender(struct gl_context *ctx, struct gl_query_object *q)
 {
-   struct pipe_context *pipe = st_context(ctx)->pipe;
+   struct st_context *st = st_context(ctx);
+   struct pipe_context *pipe = st->pipe;
    (void) q;
+
    pipe->render_condition(pipe, NULL, 0);
+   st->render_condition = NULL;
 }
 
 

src/mesa/state_tracker/st_context.h

@@ -200,6 +200,10 @@ struct st_context
       GLsizei stride;
    } user_attrib[PIPE_MAX_ATTRIBS];
    unsigned num_user_attribs;
+
+   /* Active render condition. */
+   struct pipe_query *render_condition;
+   unsigned condition_mode;
 };
 
 

src/mesa/state_tracker/st_gen_mipmap.c

@@ -91,9 +91,18 @@ st_render_mipmap(struct st_context *st,
       return FALSE;
    }
 
+   /* Disable conditional rendering. */
+   if (st->render_condition) {
+      pipe->render_condition(pipe, NULL, 0);
+   }
+
    util_gen_mipmap(st->gen_mipmap, psv, face, baseLevel, lastLevel,
                    PIPE_TEX_FILTER_LINEAR);
 
+   if (st->render_condition) {
+      pipe->render_condition(pipe, st->render_condition, st->condition_mode);
+   }
+
    return TRUE;
 }