src/dawn/native/webgpu/ShaderModuleWGPU.cpp

// Copyright 2025 The Dawn & Tint Authors
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#include "dawn/native/webgpu/ShaderModuleWGPU.h"

#include <utility>

#include "dawn/native/ShaderModule.h"
#include "dawn/native/webgpu/DeviceWGPU.h"

namespace dawn::native::webgpu {

// static
ResultOrError<Ref<ShaderModule>> ShaderModule::Create(
    Device* device,
    const UnpackedPtr<ShaderModuleDescriptor>& descriptor,
    const std::vector<tint::wgsl::Extension>& internalExtensions,
    ShaderModuleParseResult* parseResult) {
    Ref<ShaderModule> module = AcquireRef(new ShaderModule(device, descriptor, internalExtensions));
    DAWN_TRY(module->Initialize(descriptor, parseResult));
    return module;
}

ShaderModule::ShaderModule(Device* device,
                           const UnpackedPtr<ShaderModuleDescriptor>& descriptor,
                           std::vector<tint::wgsl::Extension> internalExtensions)
    : ShaderModuleBase(device, descriptor, std::move(internalExtensions)),
      ObjectWGPU(device->wgpu.shaderModuleRelease) {}

MaybeError ShaderModule::Initialize(const UnpackedPtr<ShaderModuleDescriptor>& descriptor,
                                    ShaderModuleParseResult* parseResult) {
    DAWN_TRY(InitializeBase(parseResult));

    if (GetCompilationMessages()->HasWarningsOrErrors()) {
        // Cached parse result already shows it is an invalid shader.
        // No need to create the real shader module on the backend.
        return {};
    }

    auto desc = ToAPI(*descriptor);
    mInnerHandle =
        ToBackend(GetDevice())
            ->wgpu.deviceCreateShaderModule(ToBackend(GetDevice())->GetInnerHandle(), desc);
    DAWN_ASSERT(mInnerHandle);

    return {};
}

}  // namespace dawn::native::webgpu