From 54abc7bfc97ae1f5ffdb357022c90f8617d27e34 Mon Sep 17 00:00:00 2001 From: Ian Romanick Date: Fri, 10 Feb 2012 16:00:27 -0800 Subject: [PATCH] swrast: Only avoid empty _TexEnvPrograms If the generated shader for _TexEnvProgram is empty, force the use of the fixed-function code. Otherwise, go ahead and use the shader. This works around a mysterious issue on i915 where fixed-function software fallbacks are not working correctly. This isn't really the fix we want, but it works around the issue. Signed-off-by: Ian Romanick --- src/mesa/swrast/s_fragprog.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/src/mesa/swrast/s_fragprog.c b/src/mesa/swrast/s_fragprog.c index cd20d8e..8d59371 100644 --- a/src/mesa/swrast/s_fragprog.c +++ b/src/mesa/swrast/s_fragprog.c @@ -40,7 +40,8 @@ GLboolean _swrast_use_fragment_program(struct gl_context *ctx) { struct gl_fragment_program *fp = ctx->FragmentProgram._Current; - return fp && fp != ctx->FragmentProgram._TexEnvProgram; + return fp && !(fp == ctx->FragmentProgram._TexEnvProgram + && fp->Base.NumInstructions == 0); } /** -- 1.7.6.4