From abacebe06d9f3d2fe1b7d256bd86cddbfa592a85 Mon Sep 17 00:00:00 2001
From: marha <marha@users.sourceforge.net>
Date: Sat, 17 Dec 2011 13:43:14 +0100
Subject: libX11 libxtrans mesa xserver git update 17 dec 2011

---
 mesalib/src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 27 ++++++++++++++++++++++
 1 file changed, 27 insertions(+)

(limited to 'mesalib/src/mesa/state_tracker/st_glsl_to_tgsi.cpp')

diff --git a/mesalib/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/mesalib/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index 9ef65c8fd..b929806ad 100644
--- a/mesalib/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/mesalib/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -5095,4 +5095,31 @@ st_link_shader(struct gl_context *ctx, struct gl_shader_program *prog)
    return GL_TRUE;
 }
 
+void
+st_translate_stream_output_info(struct glsl_to_tgsi_visitor *glsl_to_tgsi,
+                                const GLuint outputMapping[],
+                                struct pipe_stream_output_info *so)
+{
+   static unsigned comps_to_mask[] = {
+      0,
+      TGSI_WRITEMASK_X,
+      TGSI_WRITEMASK_XY,
+      TGSI_WRITEMASK_XYZ,
+      TGSI_WRITEMASK_XYZW
+   };
+   unsigned i;
+   struct gl_transform_feedback_info *info =
+      &glsl_to_tgsi->shader_program->LinkedTransformFeedback;
+
+   for (i = 0; i < info->NumOutputs; i++) {
+      assert(info->Outputs[i].NumComponents < Elements(comps_to_mask));
+      so->output[i].register_index =
+         outputMapping[info->Outputs[i].OutputRegister];
+      so->output[i].register_mask =
+         comps_to_mask[info->Outputs[i].NumComponents];
+      so->output[i].output_buffer = info->Outputs[i].OutputBuffer;
+   }
+   so->num_outputs = info->NumOutputs;
+}
+
 } /* extern "C" */
-- 
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