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ac/nir: handle non-const offset with txf/txf_ms 

It might be a vec2. If it's a constant, LLVM will fold it.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7077>
This commit is contained in:
Samuel Pitoiset 2020-10-09 08:43:46 +02:00 committed by Marge Bot
parent e690a1b78b
commit 9aa89b36fc
1 changed files with 2 additions and 4 deletions
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6
src/amd/llvm/ac_nir_to_llvm.c
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@ -4271,10 +4271,8 @@ static void visit_tex(struct ac_nir_context *ctx, nir_tex_instr *instr)
int num_offsets = instr->src[offset_src].src.ssa->num_components;
num_offsets = MIN2(num_offsets, instr->coord_components);
for (unsigned i = 0; i < num_offsets; ++i) {
args.coords[i] = LLVMBuildAdd(
ctx->ac.builder, args.coords[i],
LLVMConstInt(ctx->ac.i32, nir_src_comp_as_uint(instr->src[offset_src].src, i), false),
"");
LLVMValueRef off = ac_llvm_extract_elem(&ctx->ac, args.offset, i);
args.coords[i] = LLVMBuildAdd(ctx->ac.builder, args.coords[i], off, "");
}
args.offset = NULL;
}