From: Zebediah Figura zfigura@codeweavers.com
--- libs/vkd3d-shader/spirv.c | 32 ++++++++++++++++++++++++++++++-- 1 file changed, 30 insertions(+), 2 deletions(-)
diff --git a/libs/vkd3d-shader/spirv.c b/libs/vkd3d-shader/spirv.c index e5da4bec..e83c34fc 100644 --- a/libs/vkd3d-shader/spirv.c +++ b/libs/vkd3d-shader/spirv.c @@ -6544,7 +6544,6 @@ static SpvOp spirv_compiler_map_alu_instruction(const struct vkd3d_shader_instru {VKD3DSIH_DTOI, SpvOpConvertFToS}, {VKD3DSIH_DTOU, SpvOpConvertFToU}, {VKD3DSIH_FTOD, SpvOpFConvert}, - {VKD3DSIH_FTOI, SpvOpConvertFToS}, {VKD3DSIH_IADD, SpvOpIAdd}, {VKD3DSIH_INEG, SpvOpSNegate}, {VKD3DSIH_ISHL, SpvOpShiftLeftLogical}, @@ -7010,6 +7009,33 @@ static void spirv_compiler_emit_udiv(struct spirv_compiler *compiler, } }
+static void spirv_compiler_emit_ftoi(struct spirv_compiler *compiler, + const struct vkd3d_shader_instruction *instruction) +{ + struct vkd3d_spirv_builder *builder = &compiler->spirv_builder; + const struct vkd3d_shader_dst_param *dst = instruction->dst; + const struct vkd3d_shader_src_param *src = instruction->src; + uint32_t src_type_id, type_id, src_id, int_min_id, val_id; + + assert(instruction->dst_count == 1); + assert(instruction->src_count == 1); + + /* OpConvertFToI has undefined results if the result cannot be represented + * as a signed integer, but Direct3D expects the result to saturate, + * and for NaN to yield zero. */ + + src_type_id = spirv_compiler_get_type_id_for_reg(compiler, &src->reg, dst->write_mask); + type_id = spirv_compiler_get_type_id_for_dst(compiler, dst); + src_id = spirv_compiler_emit_load_src(compiler, src, dst->write_mask); + int_min_id = spirv_compiler_get_constant_float_vector(compiler, -2147483648.0f, + vkd3d_write_mask_component_count(dst->write_mask)); + + val_id = vkd3d_spirv_build_op_glsl_std450_max(builder, src_type_id, src_id, int_min_id); + val_id = vkd3d_spirv_build_op_tr1(builder, &builder->function_stream, SpvOpConvertFToS, type_id, val_id); + + spirv_compiler_emit_store_dst(compiler, dst, val_id); +} + static void spirv_compiler_emit_ftou(struct spirv_compiler *compiler, const struct vkd3d_shader_instruction *instruction) { @@ -9330,7 +9356,6 @@ static int spirv_compiler_handle_instruction(struct spirv_compiler *compiler, case VKD3DSIH_DTOI: case VKD3DSIH_DTOU: case VKD3DSIH_FTOD: - case VKD3DSIH_FTOI: case VKD3DSIH_IADD: case VKD3DSIH_INEG: case VKD3DSIH_ISHL: @@ -9391,6 +9416,9 @@ static int spirv_compiler_handle_instruction(struct spirv_compiler *compiler, case VKD3DSIH_UDIV: spirv_compiler_emit_udiv(compiler, instruction); break; + case VKD3DSIH_FTOI: + spirv_compiler_emit_ftoi(compiler, instruction); + break; case VKD3DSIH_FTOU: spirv_compiler_emit_ftou(compiler, instruction); break;