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authorPaul Berry <stereotype441@gmail.com>2013-11-19 18:51:48 -0800
committerPaul Berry <stereotype441@gmail.com>2013-11-21 18:16:42 -0800
commit08315233509f1fa7dc1e877aed2a8517296cf86e (patch)
treeff1495a23c1f29f744e4a3768716a28d94c7c644 /src
parentc1019670ea89505ea7411629c052d662c8eb6be6 (diff)
i965: Fix fast clear of depth buffers.
From section 4.4.7 (Layered Framebuffers) of the GLSL 3.2 spec: When the Clear or ClearBuffer* commands are used to clear a layered framebuffer attachment, all layers of the attachment are cleared. This patch fixes the fast depth clear path. Fixes piglit test "spec/!OpenGL 3.2/layered-rendering/clear-depth". Cc: "10.0" <mesa-stable@lists.freedesktop.org> Reviewed-by: Eric Anholt <eric@anholt.net> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Diffstat (limited to 'src')
-rw-r--r--src/mesa/drivers/dri/i965/brw_clear.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_clear.c b/src/mesa/drivers/dri/i965/brw_clear.c
index d94e2597662..1cac996482d 100644
--- a/src/mesa/drivers/dri/i965/brw_clear.c
+++ b/src/mesa/drivers/dri/i965/brw_clear.c
@@ -181,8 +181,16 @@ brw_fast_clear_depth(struct gl_context *ctx)
*/
intel_batchbuffer_emit_mi_flush(brw);
- intel_hiz_exec(brw, mt, depth_irb->mt_level, depth_irb->mt_layer,
- GEN6_HIZ_OP_DEPTH_CLEAR);
+ if (fb->NumLayers > 0) {
+ assert(fb->NumLayers == depth_irb->mt->level[depth_irb->mt_level].depth);
+ for (unsigned layer = 0; layer < fb->NumLayers; layer++) {
+ intel_hiz_exec(brw, mt, depth_irb->mt_level, layer,
+ GEN6_HIZ_OP_DEPTH_CLEAR);
+ }
+ } else {
+ intel_hiz_exec(brw, mt, depth_irb->mt_level, depth_irb->mt_layer,
+ GEN6_HIZ_OP_DEPTH_CLEAR);
+ }
if (brw->gen == 6) {
/* From the Sandy Bridge PRM, volume 2 part 1, page 314: