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radeonsi: stop big offsets from hanging the GPU v2

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v2: rebased of radeon/llvm fix.

Signed-off-by: Christian König <deathsimple@vodafone.de>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
This commit is contained in:
Christian König 2012-08-29 10:48:01 +02:00
parent de7d3825a0
commit 88a4fd8fe6
1 changed files with 9 additions and 2 deletions
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11
src/gallium/drivers/radeonsi/radeonsi_shader.c
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@ -357,6 +357,7 @@ static LLVMValueRef fetch_constant(
unsigned swizzle)
{
struct lp_build_context * base = &bld_base->base;
unsigned idx;
LLVMValueRef const_ptr;
LLVMValueRef offset;
@ -376,8 +377,14 @@ static LLVMValueRef fetch_constant(
/* XXX: This assumes that the constant buffer is not packed, so
* CONST[0].x will have an offset of 0 and CONST[1].x will have an
* offset of 4. */
offset = lp_build_const_int32(base->gallivm,
(reg->Register.Index * 4) + swizzle);
idx = (reg->Register.Index * 4) + swizzle;
/* index loads above 255 are currently not supported */
if (idx > 255) {
assert(0);
idx = 0;
}
offset = lp_build_const_int32(base->gallivm, idx);
load = build_indexed_load(base->gallivm, const_ptr, offset);
return bitcast(bld_base, type, load);