diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_vs_constval.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vs_constval.c b/src/mesa/drivers/dri/i965/brw_vs_constval.c index 9ce5ab379ea..5b26c7a6db4 100644 --- a/src/mesa/drivers/dri/i965/brw_vs_constval.c +++ b/src/mesa/drivers/dri/i965/brw_vs_constval.c @@ -195,6 +195,21 @@ static void calc_wm_input_sizes( struct brw_context *brw ) GLuint insn; GLuint i; + /* Mesa IR is not generated for GLSL vertex shaders. If there's no Mesa + * IR, the code below cannot determine which output components are + * written. So, skip it and assume everything is written. This + * circumvents some optimizations in the fragment shader, but it guarantees + * that correct code is generated. + */ + if (vp->program.Base.NumInstructions == 0) { + brw->wm.input_size_masks[0] = ~0; + brw->wm.input_size_masks[1] = ~0; + brw->wm.input_size_masks[2] = ~0; + brw->wm.input_size_masks[3] = ~0; + return; + } + + memset(&t, 0, sizeof(t)); /* _NEW_LIGHT | _NEW_PROGRAM */ |