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Metal: Ensure position invariance is captured from SPIRV-Cross

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Closes #99029
This commit is contained in:
Stuart Carnie 2024-11-15 14:06:32 +11:00
parent 673f396677
commit 9c2ca820f2
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GPG Key ID: 848D9C9718D78B4F
1 changed files with 15 additions and 3 deletions
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18
drivers/metal/rendering_device_driver_metal.mm
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@ -1032,7 +1032,7 @@ void RenderingDeviceDriverMetal::framebuffer_free(FramebufferID p_framebuffer) {
#pragma mark - Shader
const uint32_t SHADER_BINARY_VERSION = 2;
const uint32_t SHADER_BINARY_VERSION = 3;
// region Serialization
@ -1336,23 +1336,32 @@ struct ComputeSize {
struct ShaderStageData {
RD::ShaderStage stage = RD::ShaderStage::SHADER_STAGE_MAX;
uint32_t is_position_invariant = UINT32_MAX;
uint32_t supports_fast_math = UINT32_MAX;
CharString entry_point_name;
CharString source;
size_t serialize_size() const {
int comp_size = Compression::get_max_compressed_buffer_size(source.length(), Compression::MODE_ZSTD);
return sizeof(uint32_t) // Stage.
+ sizeof(uint32_t) /* entry_point_name.utf8().length */ + entry_point_name.length() + sizeof(uint32_t) /* uncompressed size */ + sizeof(uint32_t) /* compressed size */ + comp_size;
+ sizeof(uint32_t) // is_position_invariant
+ sizeof(uint32_t) // supports_fast_math
+ sizeof(uint32_t) /* entry_point_name.utf8().length */
+ entry_point_name.length() + sizeof(uint32_t) /* uncompressed size */ + sizeof(uint32_t) /* compressed size */ + comp_size;
}
void serialize(BufWriter &p_writer) const {
p_writer.write((uint32_t)stage);
p_writer.write(is_position_invariant);
p_writer.write(supports_fast_math);
p_writer.write(entry_point_name);
p_writer.write_compressed(source);
}
void deserialize(BufReader &p_reader) {
p_reader.read((uint32_t &)stage);
p_reader.read(is_position_invariant);
p_reader.read(supports_fast_math);
p_reader.read(entry_point_name);
p_reader.read_compressed(source);
}
@ -2293,6 +2302,8 @@ Vector<uint8_t> RenderingDeviceDriverMetal::shader_compile_binary_from_spirv(Vec
ShaderStageData stage_data;
stage_data.stage = v.shader_stage;
stage_data.is_position_invariant = compiler.is_position_invariant();
stage_data.supports_fast_math = !entry_point.flags.get(spv::ExecutionModeSignedZeroInfNanPreserve);
stage_data.entry_point_name = entry_point.name.c_str();
stage_data.source = source.c_str();
bin_data.stages.push_back(stage_data);
@ -2365,7 +2376,8 @@ RDD::ShaderID RenderingDeviceDriverMetal::shader_create_from_bytecode(const Vect
ShaderCacheEntry *cd = memnew(ShaderCacheEntry(*this, key));
cd->name = binary_data.shader_name;
cd->stage = shader_data.stage;
options.preserveInvariance = shader_data.is_position_invariant;
options.fastMathEnabled = YES;
MDLibrary *library = [MDLibrary newLibraryWithCacheEntry:cd
device:device
source:source