Module: Mesa
Branch: master
Commit: 595c8180714da1d97be445b9a66affa1dfea39f6
URL:    
http://cgit.freedesktop.org/mesa/mesa/commit/?id=595c8180714da1d97be445b9a66affa1dfea39f6

Author: Francisco Jerez <[email protected]>
Date:   Fri Sep  4 15:30:41 2015 +0300

i965: Resolve color and flush for all active shader images in 
intel_update_state().

Fixes arb_shader_image_load_store/execution/load-from-cleared-image.shader_test.

Couldn't reproduce any significant FPS regression in CPU-bound
benchmarks from the Finnish benchmarking system on neither VLV nor BSW
after 30 runs with 95% confidence level.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92849
Cc: Chris Wilson <[email protected]>
Cc: Jason Ekstrand <[email protected]>
Cc: "11.0 11.1" <[email protected]>
Tested-by: Jordan Justen <[email protected]>
Reviewed-by: Kristian Høgsberg <[email protected]>

---

 src/mesa/drivers/dri/i965/brw_context.c |   18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/mesa/drivers/dri/i965/brw_context.c 
b/src/mesa/drivers/dri/i965/brw_context.c
index 7d7643c..88be907 100644
--- a/src/mesa/drivers/dri/i965/brw_context.c
+++ b/src/mesa/drivers/dri/i965/brw_context.c
@@ -197,6 +197,24 @@ intel_update_state(struct gl_context * ctx, GLuint 
new_state)
       brw_render_cache_set_check_flush(brw, tex_obj->mt->bo);
    }
 
+   /* Resolve color for each active shader image. */
+   for (unsigned i = 0; i < MESA_SHADER_STAGES; i++) {
+      const struct gl_shader *shader = ctx->_Shader->CurrentProgram[i] ?
+         ctx->_Shader->CurrentProgram[i]->_LinkedShaders[i] : NULL;
+
+      if (unlikely(shader && shader->NumImages)) {
+         for (unsigned j = 0; j < shader->NumImages; j++) {
+            struct gl_image_unit *u = &ctx->ImageUnits[shader->ImageUnits[j]];
+            tex_obj = intel_texture_object(u->TexObj);
+
+            if (tex_obj && tex_obj->mt) {
+               intel_miptree_resolve_color(brw, tex_obj->mt);
+               brw_render_cache_set_check_flush(brw, tex_obj->mt->bo);
+            }
+         }
+      }
+   }
+
    _mesa_lock_context_textures(ctx);
 }
 

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