r300/compiler: do not set TEX_IGNORE_UNCOVERED on r500

The docs say it can be set for direct texture lookups, but even that
causes problems.

This fixes the wireframe bug:
https://bugs.freedesktop.org/show_bug.cgi?id=32688

NOTE: This is a candidate for the 7.9 and 7.10 branches.

diff --git a/src/mesa/drivers/dri/r300/compiler/r500_fragprog_emit.c b/src/mesa/drivers/dri/r300/compiler/r500_fragprog_emit.c
index 1febc19..301b444 100644 (file)
--- a/src/mesa/drivers/dri/r300/compiler/r500_fragprog_emit.c
+++ b/src/mesa/drivers/dri/r300/compiler/r500_fragprog_emit.c
@@ -372,7 +372,7 @@ static int emit_tex(struct r300_fragment_program_compiler *c, struct rc_sub_inst
                | (inst->DstReg.WriteMask << 11)
                | R500_INST_TEX_SEM_WAIT;
        code->inst[ip].inst1 = R500_TEX_ID(inst->TexSrcUnit)
-               | R500_TEX_SEM_ACQUIRE | R500_TEX_IGNORE_UNCOVERED;
+               | R500_TEX_SEM_ACQUIRE;
 
        if (inst->TexSrcTarget == RC_TEXTURE_RECT)
                code->inst[ip].inst1 |= R500_TEX_UNSCALED;