fontconfig libX11 libXext libXft libXmu mesa git update 26 sep 2011

1 files changed, 7 insertions, 1 deletions

diff --git a/mesalib/src/glsl/linker.cpp b/mesalib/src/glsl/linker.cpp
index 195f58f29..d802a0a9b 100644
--- a/mesalib/src/glsl/linker.cpp
+++ b/mesalib/src/glsl/linker.cpp
@@ -244,7 +244,9 @@ count_attribute_slots(const glsl_type *t)
 
 
 /**
- * Verify that a vertex shader executable meets all semantic requirements
+ * Verify that a vertex shader executable meets all semantic requirements.
+ *
+ * Also sets prog->Vert.UsesClipDistance as a side effect.
  *
  * \param shader  Vertex shader executable to be verified
  */
@@ -279,6 +281,7 @@ validate_vertex_shader_executable(struct gl_shader_program *prog,
                       "and `gl_ClipDistance'\n");
          return false;
       }
+      prog->Vert.UsesClipDistance = clip_distance.variable_found();
    }
 
    return true;
@@ -1743,6 +1746,9 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog)
       if (!prog->LinkStatus)
 	 goto done;
 
+      if (ctx->ShaderCompilerOptions[i].LowerClipDistance)
+         lower_clip_distance(prog->_LinkedShaders[i]->ir);
+
       while (do_common_optimization(prog->_LinkedShaders[i]->ir, true, 32))
 	 ;
    }