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vkd3d-shader/spirv: Clamp ftou upper bound to UINT_MAX.

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This commit is contained in:
Zebediah Figura 2023-07-27 00:22:49 -05:00 committed by Alexandre Julliard
parent 491146fa94
commit cc893a3368
Notes: Alexandre Julliard 2023-09-25 22:27:00 +02:00 
Approved-by: Giovanni Mascellani (@giomasce)
Approved-by: Henri Verbeet (@hverbeet)
Approved-by: Alexandre Julliard (@julliard)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/289
1 changed files with 15 additions and 5 deletions
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20
libs/vkd3d-shader/spirv.c
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@ -6999,10 +6999,12 @@ static void spirv_compiler_emit_udiv(struct spirv_compiler *compiler,
static void spirv_compiler_emit_ftou(struct spirv_compiler *compiler,
const struct vkd3d_shader_instruction *instruction)
{
uint32_t src_id, zero_id, uint_max_id, float_max_id, condition_id, val_id;
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, zero_id, val_id;
uint32_t src_type_id, dst_type_id, condition_type_id;
unsigned int component_count;
assert(instruction->dst_count == 1);
assert(instruction->src_count == 1);
@ -7011,14 +7013,22 @@ static void spirv_compiler_emit_ftou(struct spirv_compiler *compiler,
* as an unsigned integer, but Direct3D expects the result to saturate,
* and for NaN to yield zero. */
component_count = vkd3d_write_mask_component_count(dst->write_mask);
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);
dst_type_id = spirv_compiler_get_type_id_for_dst(compiler, dst);
src_id = spirv_compiler_emit_load_src(compiler, src, dst->write_mask);
zero_id = spirv_compiler_get_constant_float_vector(compiler, 0.0f,
vkd3d_write_mask_component_count(dst->write_mask));
zero_id = spirv_compiler_get_constant_float_vector(compiler, 0.0f, component_count);
val_id = vkd3d_spirv_build_op_glsl_std450_max(builder, src_type_id, src_id, zero_id);
val_id = vkd3d_spirv_build_op_tr1(builder, &builder->function_stream, SpvOpConvertFToU, type_id, val_id);
float_max_id = spirv_compiler_get_constant_float_vector(compiler, 4294967296.0f, component_count);
uint_max_id = spirv_compiler_get_constant_uint_vector(compiler, UINT_MAX, component_count);
condition_type_id = vkd3d_spirv_get_type_id(builder, VKD3D_SHADER_COMPONENT_BOOL, component_count);
condition_id = vkd3d_spirv_build_op_tr2(builder, &builder->function_stream,
SpvOpFOrdGreaterThanEqual, condition_type_id, val_id, float_max_id);
val_id = vkd3d_spirv_build_op_tr1(builder, &builder->function_stream, SpvOpConvertFToU, dst_type_id, val_id);
val_id = vkd3d_spirv_build_op_select(builder, dst_type_id, condition_id, uint_max_id, val_id);
spirv_compiler_emit_store_dst(compiler, dst, val_id);
}