Mesa (master): svga: handle TGSI_SEMANTIC_CLIPDIST/VERTEX semantics

[Brian Paul]

Module: Mesa
Branch: master
Commit: 0adc5d9cfdd94bc5cbc3d45b9ada3d13ac4adb7c
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=0adc5d9cfdd94bc5cbc3d45b9ada3d13ac4adb7c

Author: Brian Paul <brianp at vmware.com>
Date:   Mon Apr  2 20:05:50 2012 +0200

svga: handle TGSI_SEMANTIC_CLIPDIST/VERTEX semantics

We can't support these vertex attributes, but don't die in an assertion.
Issue a warning instead.

Fixes https://bugs.freedesktop.org/show_bug.cgi?id=48142

---

 src/gallium/drivers/svga/svga_tgsi_decl_sm30.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/src/gallium/drivers/svga/svga_tgsi_decl_sm30.c b/src/gallium/drivers/svga/svga_tgsi_decl_sm30.c
index a4e80b5..e9adf3a 100644
--- a/src/gallium/drivers/svga/svga_tgsi_decl_sm30.c
+++ b/src/gallium/drivers/svga/svga_tgsi_decl_sm30.c
@@ -72,6 +72,13 @@ translate_vs_ps_semantic(struct svga_shader_emitter *emit,
       *idx = semantic.Index;
       *usage = SVGA3D_DECLUSAGE_NORMAL;
       break;
+   case TGSI_SEMANTIC_CLIPDIST:
+   case TGSI_SEMANTIC_CLIPVERTEX:
+      /* XXX at this time we don't support clip distance or clip vertices */
+      debug_warn_once("unsupported clip distance/vertex attribute\n");
+      *usage = SVGA3D_DECLUSAGE_TEXCOORD;
+      *idx = 0;
+      return TRUE;
    default:
       assert(0);
       *usage = SVGA3D_DECLUSAGE_TEXCOORD;