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/*
* Copyright (c) 2021-2022 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#import "ASTInterpolateAttribute.h"
#import "CallGraph.h"
#import "WGSL.h"
#import <variant>
#import <wtf/FastMalloc.h>
#import <wtf/Ref.h>
#import <wtf/RefCounted.h>
#import <wtf/TZoneMalloc.h>
#import <wtf/text/StringHash.h>
#import <wtf/text/WTFString.h>
struct WGPUShaderModuleImpl {
};
namespace WGSL {
namespace AST {
class Function;
}
struct Type;
}
namespace WebGPU {
class Device;
class PipelineLayout;
// https://gpuweb.github.io/gpuweb/#gpushadermodule
class ShaderModule : public WGPUShaderModuleImpl, public RefCounted<ShaderModule> {
WTF_MAKE_TZONE_ALLOCATED(ShaderModule);
using CheckResult = Variant<WGSL::SuccessfulCheck, WGSL::FailedCheck, std::monostate>;
public:
static Ref<ShaderModule> create(Variant<WGSL::SuccessfulCheck, WGSL::FailedCheck>&& checkResult, HashMap<String, Ref<PipelineLayout>>&& pipelineLayoutHints, HashMap<String, WGSL::Reflection::EntryPointInformation>&& entryPointInformation, id<MTLLibrary> library, Device& device)
{
return adoptRef(*new ShaderModule(WTFMove(checkResult), WTFMove(pipelineLayoutHints), WTFMove(entryPointInformation), library, device));
}
static Ref<ShaderModule> createInvalid(Device& device, CheckResult&& checkResult = std::monostate { })
{
return adoptRef(*new ShaderModule(device, WTFMove(checkResult)));
}
~ShaderModule();
void getCompilationInfo(CompletionHandler<void(WGPUCompilationInfoRequestStatus, const WGPUCompilationInfo&)>&& callback);
void setLabel(String&&);
bool isValid() const { return std::holds_alternative<WGSL::SuccessfulCheck>(m_checkResult); }
static WGSL::PipelineLayout convertPipelineLayout(const PipelineLayout&);
static id<MTLLibrary> createLibrary(id<MTLDevice>, const String& msl, String&& label, NSError **, WGSL::DeviceState&&);
WGSL::ShaderModule* ast() const;
const PipelineLayout* pipelineLayoutHint(const String&) const;
const WGSL::Reflection::EntryPointInformation* entryPointInformation(const String&) const;
id<MTLLibrary> library() const { return m_library; }
Device& device() const { return m_device; }
const String& defaultVertexEntryPoint() const;
const String& defaultFragmentEntryPoint() const;
const String& defaultComputeEntryPoint() const;
using VertexStageIn = HashMap<uint32_t, WGPUVertexFormat, DefaultHash<uint32_t>, WTF::UnsignedWithZeroKeyHashTraits<uint32_t>>;
using FragmentOutputs = HashMap<uint32_t, MTLDataType, DefaultHash<uint32_t>, WTF::UnsignedWithZeroKeyHashTraits<uint32_t>>;
struct VertexOutputFragmentInput {
MTLDataType dataType { MTLDataTypeNone };
std::optional<WGSL::AST::Interpolation> interpolation { std::nullopt };
};
using VertexOutputs = HashMap<uint32_t, VertexOutputFragmentInput, DefaultHash<uint32_t>, WTF::UnsignedWithZeroKeyHashTraits<uint32_t>>;
using FragmentInputs = VertexOutputs;
const FragmentOutputs* fragmentReturnTypeForEntryPoint(const String&) const;
const FragmentInputs* fragmentInputsForEntryPoint(const String&) const;
const VertexStageIn* stageInTypesForEntryPoint(const String&) const;
const VertexOutputs* vertexReturnTypeForEntryPoint(const String&) const;
bool usesFrontFacingInInput(const String&) const;
bool usesSampleIndexInInput(const String&) const;
bool usesSampleMaskInInput(const String&) const;
bool usesSampleMaskInOutput(const String&) const;
bool usesFragDepth(const String&) const;
private:
ShaderModule(Variant<WGSL::SuccessfulCheck, WGSL::FailedCheck>&&, HashMap<String, Ref<PipelineLayout>>&&, HashMap<String, WGSL::Reflection::EntryPointInformation>&&, id<MTLLibrary>, Device&);
ShaderModule(Device&, CheckResult&&);
CheckResult convertCheckResult(Variant<WGSL::SuccessfulCheck, WGSL::FailedCheck>&&);
const CheckResult m_checkResult;
const HashMap<String, Ref<PipelineLayout>> m_pipelineLayoutHints;
const HashMap<String, WGSL::Reflection::EntryPointInformation> m_entryPointInformation;
const id<MTLLibrary> m_library { nil }; // This is only non-null if we could compile the module early.
void populateFragmentInputs(const WGSL::Type&, ShaderModule::FragmentInputs&, const String&);
FragmentInputs parseFragmentInputs(const WGSL::AST::Function&);
void populateOutputState(const String&, WGSL::Builtin);
ShaderModule::FragmentOutputs parseFragmentReturnType(const WGSL::Type&, const WGSL::CallGraph::EntryPoint&);
const Ref<Device> m_device;
// FIXME: https://bugs.webkit.org/show_bug.cgi?id=250441 - this needs to be populated from the compiler
HashMap<String, String> m_constantIdentifiersToNames;
HashMap<String, FragmentOutputs> m_fragmentReturnTypeForEntryPoint;
HashMap<String, FragmentInputs> m_fragmentInputsForEntryPoint;
HashMap<String, VertexOutputs> m_vertexReturnTypeForEntryPoint;
HashMap<String, VertexStageIn> m_stageInTypesForEntryPoint;
String m_defaultVertexEntryPoint;
String m_defaultFragmentEntryPoint;
String m_defaultComputeEntryPoint;
struct ShaderModuleState {
bool usesFrontFacingInInput { false };
bool usesSampleIndexInInput { false };
bool usesSampleMaskInInput { false };
bool usesSampleMaskInOutput { false };
bool usesFragDepth { false };
};
const ShaderModuleState* shaderModuleState(const String&) const;
ShaderModuleState& populateShaderModuleState(const String&);
HashMap<String, ShaderModuleState> m_usageInformationPerEntryPoint;
};
} // namespace WebGPU
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