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radeonsi: only touch first three coordinates in si_prepare_cube_coords

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Sourcing coords_arg[4] is actually never correct, since bias is handled
differently in tex_fetch_args anyway.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This commit is contained in:
Nicolai Hähnle 2017-01-10 14:54:22 +01:00
parent 9f590ee9d9
commit 0ee1ee5fbb
1 changed files with 1 additions and 12 deletions
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13
src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c
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@ -1027,7 +1027,7 @@ void si_prepare_cube_coords(struct lp_build_tgsi_context *bld_base,
LLVMBuilderRef builder = gallivm->builder;
LLVMTypeRef type = bld_base->base.elem_type;
struct cube_selection_coords selcoords;
LLVMValueRef coords[4];
LLVMValueRef coords[3];
LLVMValueRef invma;
build_cube_intrinsic(gallivm, coords_arg, &selcoords);
@ -1100,16 +1100,5 @@ void si_prepare_cube_coords(struct lp_build_tgsi_context *bld_base,
coords_arg[3], lp_build_const_float(gallivm, 8.0), coords[2]);
}
/* Preserve compare/lod/bias. Put it in coords.w. */
if (opcode == TGSI_OPCODE_TEX2 ||
opcode == TGSI_OPCODE_TXB2 ||
opcode == TGSI_OPCODE_TXL2) {
coords[3] = coords_arg[4];
} else if (opcode == TGSI_OPCODE_TXB ||
opcode == TGSI_OPCODE_TXL ||
target == TGSI_TEXTURE_SHADOWCUBE) {
coords[3] = coords_arg[3];
}
memcpy(coords_arg, coords, sizeof(coords));
}