From 890809d71b6ab40c56d341a5dad9f5e6b06469d0 Mon Sep 17 00:00:00 2001
From: Roland Scheidegger <sroland@vmware.com>
Date: Fri, 18 Dec 2009 15:54:28 +0100
Subject: gallium: fix mesa to tgsi translation for edgeflags

test apps (progs/trivial/tri-edgeflags and similar) seem to work now
---
 src/mesa/state_tracker/st_program.c | 28 +++++++++++++++-------------
 1 file changed, 15 insertions(+), 13 deletions(-)

(limited to 'src/mesa/state_tracker/st_program.c')

diff --git a/src/mesa/state_tracker/st_program.c b/src/mesa/state_tracker/st_program.c
index 45ab8504ae..fcc04782de 100644
--- a/src/mesa/state_tracker/st_program.c
+++ b/src/mesa/state_tracker/st_program.c
@@ -185,6 +185,10 @@ st_prepare_vertex_program(struct st_context *st,
          }
       }
    }
+   /* similar hack to above, presetup potentially unused edgeflag output */
+   stvp->result_to_output[VERT_RESULT_EDGE] = stvp->num_outputs;
+   stvp->output_semantic_name[stvp->num_outputs] = TGSI_SEMANTIC_EDGEFLAG;
+   stvp->output_semantic_index[stvp->num_outputs] = 0;
 }
 
 
@@ -197,12 +201,18 @@ st_translate_vertex_program(struct st_context *st,
    struct pipe_context *pipe = st->pipe;
    struct ureg_program *ureg;
    enum pipe_error error;
+   unsigned num_outputs;
 
    ureg = ureg_create( TGSI_PROCESSOR_VERTEX );
    if (ureg == NULL)
       return NULL;
 
    vpv->num_inputs = stvp->num_inputs;
+   num_outputs = stvp->num_outputs;
+   if (key->passthrough_edgeflags) {
+      vpv->num_inputs++;
+      num_outputs++;
+   }
 
    error = 
       st_translate_mesa_program(st->ctx,
@@ -210,29 +220,21 @@ st_translate_vertex_program(struct st_context *st,
                                 ureg,
                                 &stvp->Base.Base,
                                 /* inputs */
-                                stvp->num_inputs,
+                                vpv->num_inputs,
                                 stvp->input_to_index,
                                 NULL, /* input semantic name */
                                 NULL, /* input semantic index */
                                 NULL,
                                 /* outputs */
-                                stvp->num_outputs,
+                                num_outputs,
                                 stvp->result_to_output,
                                 stvp->output_semantic_name,
-                                stvp->output_semantic_index );
+                                stvp->output_semantic_index,
+                                key->passthrough_edgeflags );
 
    if (error)
       goto fail;
 
-   /* Edgeflags will be the last input:
-    */
-   if (key->passthrough_edgeflags) {
-      ureg_MOV( ureg,
-                ureg_DECL_output( ureg, TGSI_SEMANTIC_EDGEFLAG, 0 ),
-                ureg_DECL_vs_input( ureg, vpv->num_inputs ));
-      vpv->num_inputs++;
-   }
-
    vpv->state.tokens = ureg_get_tokens( ureg, NULL );
    ureg_destroy( ureg );
 
@@ -430,7 +432,7 @@ st_translate_fragment_program(struct st_context *st,
                                 fs_num_outputs,
                                 outputMapping,
                                 fs_output_semantic_name,
-                                fs_output_semantic_index );
+                                fs_output_semantic_index, FALSE );
 
    stfp->state.tokens = ureg_get_tokens( ureg, NULL );
    ureg_destroy( ureg );
-- 
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