gallium: first steps to treat edgeflags as regular vertex element

The idea here is to eliminate the set_edgeflags() call in pipe_context
by treating edgeflags as a regular vertex element.

Edgeflags provoke special treatment in hardware, which means we need to
label them in some way, in this case we'll be passing them through the
vertex shader and labelling the vertex shader output with a new TGSI
semantic (TGSI_SEMANTIC_EDGEFLAG).

1 files changed, 4 insertions, 9 deletions

diff --git a/src/mesa/state_tracker/st_mesa_to_tgsi.c b/src/mesa/state_tracker/st_mesa_to_tgsi.c
index 1611d53e2f..9fd670cac2 100644
--- a/src/mesa/state_tracker/st_mesa_to_tgsi.c
+++ b/src/mesa/state_tracker/st_mesa_to_tgsi.c
@@ -741,6 +741,7 @@ emit_face_var( struct st_translate *t,
 const struct tgsi_token *
 st_translate_mesa_program(
    GLcontext *ctx,
+   struct ureg_program *ureg;
    uint procType,
    const struct gl_program *program,
    GLuint numInputs,
@@ -754,7 +755,6 @@ st_translate_mesa_program(
    const ubyte outputSemanticIndex[] )
 {
    struct st_translate translate, *t;
-   struct ureg_program *ureg;
    const struct tgsi_token *tokens = NULL;
    unsigned i;
 
@@ -764,11 +764,7 @@ st_translate_mesa_program(
    t->procType = procType;
    t->inputMapping = inputMapping;
    t->outputMapping = outputMapping;
-   t->ureg = ureg_create( procType );
-   if (t->ureg == NULL)
-      return NULL;
-
-   ureg = t->ureg;
+   t->ureg = ureg;
 
    /*_mesa_print_program(program);*/
 
@@ -899,8 +895,7 @@ st_translate_mesa_program(
                         t->insn[t->labels[i].branch_target] );
    }
 
-   tokens = ureg_get_tokens( ureg, NULL );
-   ureg_destroy( ureg );
+   return PIPE_OK;
 
 out:
    FREE(t->insn);
@@ -919,7 +914,7 @@ out:
       debug_assert(0);
    }
 
-   return tokens;
+   return PIPE_ERROR_OUT_OF_MEMORY;
 }