From c42f4d11e26257ba70bd6962b410a23ba4e1d632 Mon Sep 17 00:00:00 2001 From: Henri Verbeet Date: Tue, 12 Jan 2021 14:27:04 +0100 Subject: [PATCH] vkd3d-shader: Decorate "precise" arithmetic instructions with SpvDecorationNoContraction. Signed-off-by: Henri Verbeet --- libs/vkd3d-shader/spirv.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libs/vkd3d-shader/spirv.c b/libs/vkd3d-shader/spirv.c index 3c94b99f..2b73abdd 100644 --- a/libs/vkd3d-shader/spirv.c +++ b/libs/vkd3d-shader/spirv.c @@ -7095,6 +7095,8 @@ static void vkd3d_dxbc_compiler_emit_alu_instruction(struct vkd3d_dxbc_compiler val_id = vkd3d_spirv_build_op_trv(builder, &builder->function_stream, op, type_id, src_ids, instruction->src_count); + if (instruction->flags & VKD3DSI_PRECISE_XYZW) + vkd3d_spirv_build_op_decorate(builder, val_id, SpvDecorationNoContraction, NULL, 0); vkd3d_dxbc_compiler_emit_store_dst(compiler, dst, val_id); } @@ -7331,6 +7333,8 @@ static void vkd3d_dxbc_compiler_emit_dot(struct vkd3d_dxbc_compiler *compiler, val_id = vkd3d_dxbc_compiler_emit_construct_vector(compiler, component_type, component_count, val_id, 0, 1); } + if (instruction->flags & VKD3DSI_PRECISE_XYZW) + vkd3d_spirv_build_op_decorate(builder, val_id, SpvDecorationNoContraction, NULL, 0); vkd3d_dxbc_compiler_emit_store_dst(compiler, dst, val_id); }