i965: Support PROGRAM_ENV_PARAMs in brw_vs_emit.c

src/mesa/drivers/dri/i965/brw_curbe.c

@@ -248,6 +248,9 @@ static void prepare_constant_buffer(struct brw_context *brw)
       GLuint offset = brw->curbe.vs_start * 16;
       GLuint nr = brw->vs.prog_data->nr_params / 4;
 
+      /* Updates the ParamaterValues[i] pointers for all parameters of the
+       * basic type of PROGRAM_STATE_VAR.
+       */
       _mesa_load_state_parameters(ctx, vp->program.Base.Parameters); 
 
       /* XXX just use a memcpy here */

src/mesa/drivers/dri/i965/brw_vs_emit.c

@@ -911,6 +911,7 @@ get_src_reg( struct brw_vs_compile *c,
    case PROGRAM_STATE_VAR:
    case PROGRAM_CONSTANT:
    case PROGRAM_UNIFORM:
+   case PROGRAM_ENV_PARAM:
       if (c->vp->use_const_buffer) {
          return get_constant(c, inst, argIndex);
       }
@@ -930,7 +931,6 @@ get_src_reg( struct brw_vs_compile *c,
       return brw_null_reg();
 
    case PROGRAM_LOCAL_PARAM: 
-   case PROGRAM_ENV_PARAM: 
    case PROGRAM_WRITE_ONLY:
    default:
       assert(0);