svga: Add render_condition boolean flag in struct svga_context

set render_condition flag when driver performs conditional rendering.
Blit using DXPredCopyRegion command gets affected by conditional rendering so
We should check this flag while performing blit operation

Tested with piglit tests.

v2: As per Charmaine's comment, setting render_condition flag if svga_query is valid.
Tested with pigit tests.

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

src/gallium/drivers/svga/svga_context.h

@@ -589,6 +589,8 @@ struct svga_context
       SVGA3dQueryId query_id;
       boolean cond;
    } pred;
+
+   boolean render_condition;
 };
 
 /* A flag for each state_tracker state object:

src/gallium/drivers/svga/svga_pipe_blit.c

@@ -265,7 +265,8 @@ can_blit_via_copy_region_vgpu10(struct svga_context *svga,
       blit_info->mask != (PIPE_MASK_ZS))
      return false;
 
-   if (blit_info->alpha_blend || blit_info->render_condition_enable ||
+   if (blit_info->alpha_blend ||
+       (svga->render_condition && blit_info->render_condition_enable) ||
        blit_info->scissor_enable)
       return false;
 

src/gallium/drivers/svga/svga_pipe_query.c

@@ -1242,6 +1242,8 @@ svga_render_condition(struct pipe_context *pipe, struct pipe_query *q,
       svga->pred.query_id = queryId;
       svga->pred.cond = condition;
    }
+
+   svga->render_condition = (sq != NULL);
 }