Restore the UseTexEnvProgram logic.

Was removed during glsl-compiler work.  Still need to go back and revisit this
because of the interaction with fragment shaders...

3 files changed, 18 insertions, 4 deletions

diff --git a/src/mesa/main/context.c b/src/mesa/main/context.c
index 72c85de7ba2..ae1c576248e 100644
--- a/src/mesa/main/context.c
+++ b/src/mesa/main/context.c
@@ -1355,14 +1355,16 @@ _mesa_initialize_context(GLcontext *ctx,
    ctx->TnlModule.SwapCount = 0;
 #endif
 
+   ctx->FragmentProgram._MaintainTexEnvProgram
+      = (_mesa_getenv("MESA_TEX_PROG") != NULL);
+   ctx->FragmentProgram._UseTexEnvProgram = ctx->FragmentProgram._MaintainTexEnvProgram;
+
    ctx->VertexProgram._MaintainTnlProgram
       = (_mesa_getenv("MESA_TNL_PROG") != NULL);
-   if (ctx->VertexProgram._MaintainTnlProgram)
+   if (ctx->VertexProgram._MaintainTnlProgram) {
       /* this is required... */
       ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
-   else
-      ctx->FragmentProgram._MaintainTexEnvProgram
-         = (_mesa_getenv("MESA_TEX_PROG") != NULL);
+   }
 
    ctx->FirstTimeCurrent = GL_TRUE;
 
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 828b0f2384e..4fc98f4628a 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -1987,6 +1987,7 @@ struct gl_fragment_program_state
 {
    GLboolean Enabled;     /**< User-set fragment program enable flag */
    GLboolean _Enabled;    /**< Fragment program enabled and valid? */
+   GLboolean _Active;
    struct gl_fragment_program *Current;  /**< User-bound fragment program */
 
    /** Currently enabled and valid program (including internal programs
@@ -1998,6 +1999,7 @@ struct gl_fragment_program_state
 
    /** Should fixed-function texturing be implemented with a fragment prog? */
    GLboolean _MaintainTexEnvProgram;
+   GLboolean _UseTexEnvProgram;
 
    /** Program to emulate fixed-function texture env/combine (see above) */
    struct gl_fragment_program *_TexEnvProgram;
diff --git a/src/mesa/main/state.c b/src/mesa/main/state.c
index 6ed7ae6c7dd..9ae71c57383 100644
--- a/src/mesa/main/state.c
+++ b/src/mesa/main/state.c
@@ -964,6 +964,9 @@ update_program(GLcontext *ctx)
 
    if (shProg && shProg->LinkStatus) {
       /* Use shader programs */
+      /* XXX this isn't quite right, since we may have either a vertex
+       * _or_ fragment shader (not always both).
+       */
       ctx->VertexProgram._Current = shProg->VertexProgram;
       ctx->FragmentProgram._Current = shProg->FragmentProgram;
    }
@@ -1000,6 +1003,13 @@ update_program(GLcontext *ctx)
          ctx->FragmentProgram._Current = NULL;
       }
    }
+
+   ctx->FragmentProgram._Active = ctx->FragmentProgram._Enabled;
+   if (ctx->FragmentProgram._MaintainTexEnvProgram &&
+       !ctx->FragmentProgram._Enabled) {
+      if (ctx->FragmentProgram._UseTexEnvProgram)
+	 ctx->FragmentProgram._Active = GL_TRUE;
+   }
 }