From: Brian Paul <brianp@vmware.com>
Date: Tue, 24 May 2011 14:59:09 +0000 (-0600)
Subject: st/mesa: prefer formats without stencil for DEPTH_COMPONENT
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=cd5417aac72ae1de85dd6bca3d53d2e2f2d7e546;p=mesa.git

st/mesa: prefer formats without stencil for DEPTH_COMPONENT

for fast Z clears to be used more often.

Original patch by Marek Olšák.  Rebased to table-driven st_choose_format()
by Brian Paul.
---

diff --git a/src/mesa/state_tracker/st_format.c b/src/mesa/state_tracker/st_format.c
index 6ebe721bfd6..de30b4fc610 100644
--- a/src/mesa/state_tracker/st_format.c
+++ b/src/mesa/state_tracker/st_format.c
@@ -741,8 +741,9 @@ static struct format_mapping format_map[] = {
    },
    {
       { GL_DEPTH_COMPONENT24, 0 },
-      { PIPE_FORMAT_Z24_UNORM_S8_USCALED,
-        PIPE_FORMAT_S8_USCALED_Z24_UNORM, PIPE_FORMAT_Z32_UNORM, 0 }
+      { PIPE_FORMAT_Z24X8_UNORM, PIPE_FORMAT_X8Z24_UNORM,
+        PIPE_FORMAT_Z24_UNORM_S8_USCALED, PIPE_FORMAT_S8_USCALED_Z24_UNORM,
+        PIPE_FORMAT_Z32_UNORM, 0 }
    },
    {
       { GL_DEPTH_COMPONENT32, 0 },
@@ -750,8 +751,9 @@ static struct format_mapping format_map[] = {
    },
    {
       { GL_DEPTH_COMPONENT, 0 },
-      { PIPE_FORMAT_Z32_UNORM, PIPE_FORMAT_Z24_UNORM_S8_USCALED,
-        PIPE_FORMAT_S8_USCALED_Z24_UNORM, PIPE_FORMAT_Z16_UNORM, 0 }
+      { PIPE_FORMAT_Z24X8_UNORM, PIPE_FORMAT_X8Z24_UNORM,
+        PIPE_FORMAT_Z32_UNORM, PIPE_FORMAT_Z16_UNORM,
+        PIPE_FORMAT_Z24_UNORM_S8_USCALED, PIPE_FORMAT_S8_USCALED_Z24_UNORM, 0 }
    },
 
    /* stencil formats */