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ac/cull: don't read Position.Z if it's not needed for culling

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It could be NULL.

Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
This commit is contained in:
Marek Olšák 2020-01-06 19:19:40 -05:00
parent 8070402a30
commit eeb4a11c11
1 changed files with 1 additions and 1 deletions
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2
src/amd/llvm/ac_llvm_cull.c
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@ -153,7 +153,7 @@ static LLVMValueRef cull_bbox(struct ac_llvm_context *ctx,
LLVMValueRef accepted = initially_accepted;
/* Compute the primitive bounding box for easy culling. */
for (unsigned chan = 0; chan < 3; chan++) {
for (unsigned chan = 0; chan < (cull_view_near_z || cull_view_far_z ? 3 : 2); chan++) {
bbox_min[chan] = ac_build_fmin(ctx, pos[0][chan], pos[1][chan]);
bbox_min[chan] = ac_build_fmin(ctx, bbox_min[chan], pos[2][chan]);