Mesa (master): i965: Fix glColorPointer(GL_FIXED)

[Chad Versace]

Module: Mesa
Branch: master
Commit: 7a9f4d3e7114ca709658a620644ad897bdda41e7
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=7a9f4d3e7114ca709658a620644ad897bdda41e7

Author: Chad Versace <chad.versace at linux.intel.com>
Date:   Tue May 28 16:26:07 2013 -0700

i965: Fix glColorPointer(GL_FIXED)

When a gl_client_array is created with glColorPointer,
gl_client_array::Normalized is true. This caused the translation from the
gl_client_array's type to a BRW_SURFACEFORMAT to assertion fail.

Fixes the spinning cube's color in Android 4.2's ApiDemos.apk,
"Graphics > OpenGL ES".

Fixes assertion failure in mesa-demos/src/egl/opengles1/tri_x11 on Haswell
and Ivybridge:
  brw_draw_upload.c:287: get_surface_type: Assertion `0' failed.

No Piglit regressions on Haswell.

Note: This is a candidate for the 9.1 branch.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=42182
Issue: AXIA-2954
Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
Signed-off-by: Chad Versace <chad.versace at linux.intel.com>

---

 src/mesa/drivers/dri/i965/brw_draw_upload.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_draw_upload.c b/src/mesa/drivers/dri/i965/brw_draw_upload.c
index d2451f9..2ded14b 100644
--- a/src/mesa/drivers/dri/i965/brw_draw_upload.c
+++ b/src/mesa/drivers/dri/i965/brw_draw_upload.c
@@ -263,6 +263,14 @@ get_surface_type(struct intel_context *intel,
          else {
             return ubyte_types_norm[size];
          }
+      case GL_FIXED:
+         if (intel->gen >= 8 || intel->is_haswell)
+            return fixed_point_types[size];
+
+         /* This produces GL_FIXED inputs as values between INT32_MIN and
+          * INT32_MAX, which will be scaled down by 1/65536 by the VS.
+          */
+         return int_types_scale[size];
       /* See GL_ARB_vertex_type_2_10_10_10_rev.
        * W/A: Pre-Haswell, the hardware doesn't really support the formats we'd
        * like to use here, so upload everything as UINT and fix