mesa: merge gallium-0.2 into gallium-master-merge

[mesa.git] / src / mesa / main / state.c

diff --git a/src/mesa/main/state.c b/src/mesa/main/state.c
index 5e073a186370955855811a888653a0de7054da63..718cd9984767653dbc657df3c628a00f45a64122 100644 (file)
--- a/src/mesa/main/state.c
+++ b/src/mesa/main/state.c
@@ -190,8 +190,8 @@ update_program(GLcontext *ctx)
 
    /*
     * Set the ctx->VertexProgram._Current and ctx->FragmentProgram._Current
-    * pointers to the programs that should be enabled/used.  These will only
-    * be NULL if we need to use the fixed-function code.
+    * pointers to the programs that should be used for rendering.  If either
+    * is NULL, use fixed-function code paths.
     *
     * These programs may come from several sources.  The priority is as
     * follows:
@@ -204,70 +204,55 @@ update_program(GLcontext *ctx)
     * come up, or matter.
     */
 
-   _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current, NULL);
-
-   if (shProg && shProg->LinkStatus) {
+   if (shProg && shProg->LinkStatus && shProg->FragmentProgram) {
       /* Use shader programs */
-      /* XXX this isn't quite right, since we may have either a vertex
-       * _or_ fragment shader (not always both).
-       */
-      _mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current,
-                               shProg->VertexProgram);
       _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current,
                                shProg->FragmentProgram);
    }
-   else {
-      if (ctx->FragmentProgram._Enabled) {
-         /* use user-defined vertex program */
-         _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current,
-                                  ctx->FragmentProgram.Current);
-      }
-      else if (ctx->FragmentProgram._MaintainTexEnvProgram) {
-         /* Use fragment program generated from fixed-function state.
-          */
-         _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current,
-                                  _mesa_get_fixed_func_fragment_program(ctx));
-         _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._TexEnvProgram,
-                                  ctx->FragmentProgram._Current);
-      }
-      else {
-         /* no fragment program */
-         _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current, NULL);
-      }
-
-      /* Examine vertex program after fragment program as
-       * _mesa_get_fixed_func_vertex_program() needs to know active
-       * fragprog inputs.
+   else if (ctx->FragmentProgram._Enabled) {
+      /* use user-defined vertex program */
+      _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current,
+                               ctx->FragmentProgram.Current);
+   }
+   else if (ctx->FragmentProgram._MaintainTexEnvProgram) {
+      /* Use fragment program generated from fixed-function state.
        */
-      if (ctx->VertexProgram._Enabled) {
-         /* use user-defined vertex program */
-         _mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current,
-                                  ctx->VertexProgram.Current);
-      }
-      else if (ctx->VertexProgram._MaintainTnlProgram) {
-         /* Use vertex program generated from fixed-function state.
-          */
-         _mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current,
-                                  _mesa_get_fixed_func_vertex_program(ctx));
-         _mesa_reference_vertprog(ctx, &ctx->VertexProgram._TnlProgram,
-                                  ctx->VertexProgram._Current);
-      }
-      else {
-         /* no vertex program */
-         _mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current, NULL);
-      }
+      _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current,
+                               _mesa_get_fixed_func_fragment_program(ctx));
+      _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._TexEnvProgram,
+                               ctx->FragmentProgram._Current);
+   }
+   else {
+      /* no fragment program */
+      _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current, NULL);
    }
 
-   /* XXX: get rid of _Active flag.
+   /* Examine vertex program after fragment program as
+    * _mesa_get_fixed_func_vertex_program() needs to know active
+    * fragprog inputs.
     */
-#if 1
-   ctx->FragmentProgram._Active = ctx->FragmentProgram._Enabled;
-   if (ctx->FragmentProgram._MaintainTexEnvProgram &&
-       !ctx->FragmentProgram._Enabled) {
-      if (ctx->FragmentProgram._UseTexEnvProgram)
-        ctx->FragmentProgram._Active = GL_TRUE;
+   if (shProg && shProg->LinkStatus && shProg->VertexProgram) {
+      /* Use shader programs */
+      _mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current,
+                            shProg->VertexProgram);
+   }
+   else if (ctx->VertexProgram._Enabled) {
+      /* use user-defined vertex program */
+      _mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current,
+                               ctx->VertexProgram.Current);
+   }
+   else if (ctx->VertexProgram._MaintainTnlProgram) {
+      /* Use vertex program generated from fixed-function state.
+       */
+      _mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current,
+                               _mesa_get_fixed_func_vertex_program(ctx));
+      _mesa_reference_vertprog(ctx, &ctx->VertexProgram._TnlProgram,
+                               ctx->VertexProgram._Current);
+   }
+   else {
+      /* no vertex program */
+      _mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current, NULL);
    }
-#endif
 
    /* Let the driver know what's happening:
     */