Mesa (master): i915: Correct and make use of the defines for 32-bit depth texture modes.

[Eric Anholt]

Module: Mesa
Branch: master
Commit: 4b377ae292f75645ef356bd3bfac407230faf73a
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=4b377ae292f75645ef356bd3bfac407230faf73a

Author: Eric Anholt <eric at anholt.net>
Date:   Thu Oct 29 13:35:03 2009 -0700

i915: Correct and make use of the defines for 32-bit depth texture modes.

Previously, S8_Z24 depth textures would always be treated as intensity.
Fixes piglit depth-tex-modes.

---

 src/mesa/drivers/dri/i915/i915_reg.h      |    6 +++---
 src/mesa/drivers/dri/i915/i915_texstate.c |    7 ++++++-
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/src/mesa/drivers/dri/i915/i915_reg.h b/src/mesa/drivers/dri/i915/i915_reg.h
index b5fa7fd..7f31ff6 100644
--- a/src/mesa/drivers/dri/i915/i915_reg.h
+++ b/src/mesa/drivers/dri/i915/i915_reg.h
@@ -626,9 +626,9 @@
 #define    MT_32BIT_AWVU2101010	           (0xA<<3)
 #define    MT_32BIT_GR1616	           (0xB<<3)
 #define    MT_32BIT_VU1616	           (0xC<<3)
-#define    MT_32BIT_xI824	           (0xD<<3)
-#define    MT_32BIT_xA824	           (0xE<<3)
-#define    MT_32BIT_xL824	           (0xF<<3)
+#define    MT_32BIT_x8I24	           (0xD<<3)
+#define    MT_32BIT_x8L24	           (0xE<<3)
+#define    MT_32BIT_x8A24	           (0xF<<3)
 #define    MT_422_YCRCB_SWAPY	           (0<<3)       /* SURFACE_422 */
 #define    MT_422_YCRCB_NORMAL	           (1<<3)
 #define    MT_422_YCRCB_SWAPUV	           (2<<3)
diff --git a/src/mesa/drivers/dri/i915/i915_texstate.c b/src/mesa/drivers/dri/i915/i915_texstate.c
index 1397f04..0c29c55 100644
--- a/src/mesa/drivers/dri/i915/i915_texstate.c
+++ b/src/mesa/drivers/dri/i915/i915_texstate.c
@@ -82,7 +82,12 @@ translate_texture_format(gl_format mesa_format, GLuint internal_format,
    case MESA_FORMAT_RGBA_DXT5:
       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT4_5);
    case MESA_FORMAT_S8_Z24:
-      return (MAPSURF_32BIT | MT_32BIT_xI824);
+      if (DepthMode == GL_ALPHA)
+	 return (MAPSURF_32BIT | MT_32BIT_x8A24);
+      else if (DepthMode == GL_INTENSITY)
+	 return (MAPSURF_32BIT | MT_32BIT_x8I24);
+      else
+	 return (MAPSURF_32BIT | MT_32BIT_x8L24);
    default:
       fprintf(stderr, "%s: bad image format %x\n", __FUNCTION__, mesa_format);
       abort();