commit d7707ef5a554ca0a1ec17b9491055e8c8db570c4
author Brian Paul <brianp@vmware.com> Wed Apr 04 16:04:00 2012 -0600
committer Brian Paul <brianp@vmware.com> Fri Apr 06 14:10:50 2012 -0600
tree 73f1d4ec53f37b8aade0aa32b5c7d5edf6e474d8
parent 0adc5d9cfdd94bc5cbc3d45b9ada3d13ac4adb7c

svga: return 1 for PIPE_CAP_VERTEX_COLOR_UNCLAMPED query

Before, we weren't clamping the vertex colors produced by ARB vertex
programs.  This could result in some rendering being too bright (in
ETQW, for example).

Also add cases for PIPE_CAP_VERTEX_COLOR_CLAMPED and
PIPE_CAP_FRAGMENT_COLOR_CLAMPED with comments to be complete.

Reviewed-by: José Fonseca <jfonseca@vmware.com>

src/gallium/drivers/svga/svga_screen.c

diff --git a/src/gallium/drivers/svga/svga_screen.c b/src/gallium/drivers/svga/svga_screen.c
index 8badcb2..b2f3e33 100644
--- a/src/gallium/drivers/svga/svga_screen.c
+++ b/src/gallium/drivers/svga/svga_screen.c
@@ -203,6 +203,13 @@
    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
       return 0;
 
+   case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
+      return 1; /* The color outputs of vertex shaders are not clamped */
+   case PIPE_CAP_VERTEX_COLOR_CLAMPED:
+      return 0; /* The driver can't clamp vertex colors */
+   case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
+      return 0; /* The driver can't clamp fragment colors */
+
    default:
       return 0;
    }