From: Brian Paul <brianp@vmware.com>
Date: Thu, 7 Jan 2010 00:42:53 +0000 (-0700)
Subject: tnl: set FOGC result to (f,0,0,1)
X-Git-Tag: mesa-7.8~1360^2~242
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8485811f10142f54756d876ebe91193bfc8f8a0e;p=platform%2Fupstream%2Fmesa.git

tnl: set FOGC result to (f,0,0,1)

Fixed FDO bug 23397.
---

diff --git a/src/mesa/tnl/t_vb_program.c b/src/mesa/tnl/t_vb_program.c
index e69f7d5..a9dae7d 100644
--- a/src/mesa/tnl/t_vb_program.c
+++ b/src/mesa/tnl/t_vb_program.c
@@ -390,6 +390,13 @@ run_vp( GLcontext *ctx, struct tnl_pipeline_stage *stage )
 #endif
          COPY_4V(store->results[attr].data[i], machine.Outputs[attr]);
       }
+
+      /* FOGC is a special case.  Fragment shader expects (f,0,0,1) */
+      if (program->Base.OutputsWritten & BITFIELD64_BIT(VERT_RESULT_FOGC)) {
+         store->results[VERT_RESULT_FOGC].data[i][1] = 0.0;
+         store->results[VERT_RESULT_FOGC].data[i][2] = 0.0;
+         store->results[VERT_RESULT_FOGC].data[i][3] = 1.0;
+      }
 #ifdef NAN_CHECK
       ASSERT(machine.Outputs[0][3] != 0.0F);
 #endif