|  | // Copyright 2021 The Dawn & Tint Authors | 
|  | // | 
|  | // 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. | 
|  | // | 
|  | // 3. Neither the name of the copyright holder nor the names of its | 
|  | //    contributors may be used to endorse or promote products derived from | 
|  | //    this software without specific prior written permission. | 
|  | // | 
|  | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT HOLDER 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. | 
|  |  | 
|  | #include "dawn/native/TintUtils.h" | 
|  |  | 
|  | #include "dawn/native/BindGroupLayoutInternal.h" | 
|  | #include "dawn/native/Device.h" | 
|  | #include "dawn/native/Pipeline.h" | 
|  | #include "dawn/native/PipelineLayout.h" | 
|  | #include "dawn/native/RenderPipeline.h" | 
|  |  | 
|  | #include "tint/tint.h" | 
|  |  | 
|  | namespace dawn::native { | 
|  |  | 
|  | namespace { | 
|  |  | 
|  | thread_local DeviceBase* tlDevice = nullptr; | 
|  |  | 
|  | void TintICEReporter(const tint::InternalCompilerError& err) { | 
|  | if (tlDevice) { | 
|  | tlDevice->HandleError(DAWN_INTERNAL_ERROR(err.Error())); | 
|  | #if DAWN_ENABLE_ASSERTS | 
|  | HandleAssertionFailure(err.File(), "", err.Line(), err.Message().c_str()); | 
|  | #endif | 
|  | } | 
|  | } | 
|  |  | 
|  | bool InitializeTintErrorReporter() { | 
|  | tint::SetInternalCompilerErrorReporter(&TintICEReporter); | 
|  | return true; | 
|  | } | 
|  |  | 
|  | tint::ast::transform::VertexFormat ToTintVertexFormat(wgpu::VertexFormat format) { | 
|  | switch (format) { | 
|  | case wgpu::VertexFormat::Uint8x2: | 
|  | return tint::ast::transform::VertexFormat::kUint8x2; | 
|  | case wgpu::VertexFormat::Uint8x4: | 
|  | return tint::ast::transform::VertexFormat::kUint8x4; | 
|  | case wgpu::VertexFormat::Sint8x2: | 
|  | return tint::ast::transform::VertexFormat::kSint8x2; | 
|  | case wgpu::VertexFormat::Sint8x4: | 
|  | return tint::ast::transform::VertexFormat::kSint8x4; | 
|  | case wgpu::VertexFormat::Unorm8x2: | 
|  | return tint::ast::transform::VertexFormat::kUnorm8x2; | 
|  | case wgpu::VertexFormat::Unorm8x4: | 
|  | return tint::ast::transform::VertexFormat::kUnorm8x4; | 
|  | case wgpu::VertexFormat::Snorm8x2: | 
|  | return tint::ast::transform::VertexFormat::kSnorm8x2; | 
|  | case wgpu::VertexFormat::Snorm8x4: | 
|  | return tint::ast::transform::VertexFormat::kSnorm8x4; | 
|  | case wgpu::VertexFormat::Uint16x2: | 
|  | return tint::ast::transform::VertexFormat::kUint16x2; | 
|  | case wgpu::VertexFormat::Uint16x4: | 
|  | return tint::ast::transform::VertexFormat::kUint16x4; | 
|  | case wgpu::VertexFormat::Sint16x2: | 
|  | return tint::ast::transform::VertexFormat::kSint16x2; | 
|  | case wgpu::VertexFormat::Sint16x4: | 
|  | return tint::ast::transform::VertexFormat::kSint16x4; | 
|  | case wgpu::VertexFormat::Unorm16x2: | 
|  | return tint::ast::transform::VertexFormat::kUnorm16x2; | 
|  | case wgpu::VertexFormat::Unorm16x4: | 
|  | return tint::ast::transform::VertexFormat::kUnorm16x4; | 
|  | case wgpu::VertexFormat::Snorm16x2: | 
|  | return tint::ast::transform::VertexFormat::kSnorm16x2; | 
|  | case wgpu::VertexFormat::Snorm16x4: | 
|  | return tint::ast::transform::VertexFormat::kSnorm16x4; | 
|  | case wgpu::VertexFormat::Float16x2: | 
|  | return tint::ast::transform::VertexFormat::kFloat16x2; | 
|  | case wgpu::VertexFormat::Float16x4: | 
|  | return tint::ast::transform::VertexFormat::kFloat16x4; | 
|  | case wgpu::VertexFormat::Float32: | 
|  | return tint::ast::transform::VertexFormat::kFloat32; | 
|  | case wgpu::VertexFormat::Float32x2: | 
|  | return tint::ast::transform::VertexFormat::kFloat32x2; | 
|  | case wgpu::VertexFormat::Float32x3: | 
|  | return tint::ast::transform::VertexFormat::kFloat32x3; | 
|  | case wgpu::VertexFormat::Float32x4: | 
|  | return tint::ast::transform::VertexFormat::kFloat32x4; | 
|  | case wgpu::VertexFormat::Uint32: | 
|  | return tint::ast::transform::VertexFormat::kUint32; | 
|  | case wgpu::VertexFormat::Uint32x2: | 
|  | return tint::ast::transform::VertexFormat::kUint32x2; | 
|  | case wgpu::VertexFormat::Uint32x3: | 
|  | return tint::ast::transform::VertexFormat::kUint32x3; | 
|  | case wgpu::VertexFormat::Uint32x4: | 
|  | return tint::ast::transform::VertexFormat::kUint32x4; | 
|  | case wgpu::VertexFormat::Sint32: | 
|  | return tint::ast::transform::VertexFormat::kSint32; | 
|  | case wgpu::VertexFormat::Sint32x2: | 
|  | return tint::ast::transform::VertexFormat::kSint32x2; | 
|  | case wgpu::VertexFormat::Sint32x3: | 
|  | return tint::ast::transform::VertexFormat::kSint32x3; | 
|  | case wgpu::VertexFormat::Sint32x4: | 
|  | return tint::ast::transform::VertexFormat::kSint32x4; | 
|  | case wgpu::VertexFormat::Unorm10_10_10_2: | 
|  | return tint::ast::transform::VertexFormat::kUnorm10_10_10_2; | 
|  |  | 
|  | case wgpu::VertexFormat::Undefined: | 
|  | break; | 
|  | } | 
|  | DAWN_UNREACHABLE(); | 
|  | } | 
|  |  | 
|  | tint::ast::transform::VertexStepMode ToTintVertexStepMode(wgpu::VertexStepMode mode) { | 
|  | switch (mode) { | 
|  | case wgpu::VertexStepMode::Vertex: | 
|  | return tint::ast::transform::VertexStepMode::kVertex; | 
|  | case wgpu::VertexStepMode::Instance: | 
|  | return tint::ast::transform::VertexStepMode::kInstance; | 
|  | case wgpu::VertexStepMode::VertexBufferNotUsed: | 
|  | case wgpu::VertexStepMode::Undefined: | 
|  | break; | 
|  | } | 
|  | DAWN_UNREACHABLE(); | 
|  | } | 
|  |  | 
|  | }  // namespace | 
|  |  | 
|  | ScopedTintICEHandler::ScopedTintICEHandler(DeviceBase* device) { | 
|  | // Call tint::SetInternalCompilerErrorReporter() the first time | 
|  | // this constructor is called. Static initialization is | 
|  | // guaranteed to be thread-safe, and only occur once. | 
|  | static bool init_once_tint_error_reporter = InitializeTintErrorReporter(); | 
|  | (void)init_once_tint_error_reporter; | 
|  |  | 
|  | // Shouldn't have overlapping instances of this handler. | 
|  | DAWN_ASSERT(tlDevice == nullptr); | 
|  | tlDevice = device; | 
|  | } | 
|  |  | 
|  | ScopedTintICEHandler::~ScopedTintICEHandler() { | 
|  | tlDevice = nullptr; | 
|  | } | 
|  |  | 
|  | tint::ExternalTextureOptions BuildExternalTextureTransformBindings( | 
|  | const PipelineLayoutBase* layout) { | 
|  | tint::ExternalTextureOptions options; | 
|  | for (BindGroupIndex i : IterateBitSet(layout->GetBindGroupLayoutsMask())) { | 
|  | const BindGroupLayoutInternalBase* bgl = layout->GetBindGroupLayout(i); | 
|  | for (const auto& [_, expansion] : bgl->GetExternalTextureBindingExpansionMap()) { | 
|  | options.bindings_map[{static_cast<uint32_t>(i), | 
|  | static_cast<uint32_t>(expansion.plane0)}] = { | 
|  | {static_cast<uint32_t>(i), static_cast<uint32_t>(expansion.plane1)}, | 
|  | {static_cast<uint32_t>(i), static_cast<uint32_t>(expansion.params)}}; | 
|  | } | 
|  | } | 
|  | return options; | 
|  | } | 
|  |  | 
|  | tint::ast::transform::VertexPulling::Config BuildVertexPullingTransformConfig( | 
|  | const RenderPipelineBase& renderPipeline, | 
|  | BindGroupIndex pullingBufferBindingSet) { | 
|  | tint::ast::transform::VertexPulling::Config cfg; | 
|  | cfg.pulling_group = static_cast<uint32_t>(pullingBufferBindingSet); | 
|  |  | 
|  | cfg.vertex_state.resize(renderPipeline.GetVertexBufferCount()); | 
|  | for (VertexBufferSlot slot : IterateBitSet(renderPipeline.GetVertexBuffersUsed())) { | 
|  | const VertexBufferInfo& dawnInfo = renderPipeline.GetVertexBuffer(slot); | 
|  | tint::ast::transform::VertexBufferLayoutDescriptor* tintInfo = | 
|  | &cfg.vertex_state[static_cast<uint8_t>(slot)]; | 
|  |  | 
|  | tintInfo->array_stride = dawnInfo.arrayStride; | 
|  | tintInfo->step_mode = ToTintVertexStepMode(dawnInfo.stepMode); | 
|  | } | 
|  |  | 
|  | for (VertexAttributeLocation location : | 
|  | IterateBitSet(renderPipeline.GetAttributeLocationsUsed())) { | 
|  | const VertexAttributeInfo& dawnInfo = renderPipeline.GetAttribute(location); | 
|  | tint::ast::transform::VertexAttributeDescriptor tintInfo; | 
|  | tintInfo.format = ToTintVertexFormat(dawnInfo.format); | 
|  | tintInfo.offset = dawnInfo.offset; | 
|  | tintInfo.shader_location = static_cast<uint32_t>(static_cast<uint8_t>(location)); | 
|  |  | 
|  | uint8_t vertexBufferSlot = static_cast<uint8_t>(dawnInfo.vertexBufferSlot); | 
|  | cfg.vertex_state[vertexBufferSlot].attributes.push_back(tintInfo); | 
|  | } | 
|  | return cfg; | 
|  | } | 
|  |  | 
|  | tint::ast::transform::SubstituteOverride::Config BuildSubstituteOverridesTransformConfig( | 
|  | const ProgrammableStage& stage) { | 
|  | const EntryPointMetadata& metadata = *stage.metadata; | 
|  | const auto& constants = stage.constants; | 
|  |  | 
|  | tint::ast::transform::SubstituteOverride::Config cfg; | 
|  |  | 
|  | for (const auto& [key, value] : constants) { | 
|  | const auto& o = metadata.overrides.at(key); | 
|  | cfg.map.insert({o.id, value}); | 
|  | } | 
|  |  | 
|  | return cfg; | 
|  | } | 
|  |  | 
|  | // static | 
|  | template <> | 
|  | void stream::Stream<tint::Program>::Write(stream::Sink* sink, const tint::Program& p) { | 
|  | #if TINT_BUILD_WGSL_WRITER | 
|  | tint::wgsl::writer::Options options{}; | 
|  | StreamIn(sink, tint::wgsl::writer::Generate(p, options)->wgsl); | 
|  | #else | 
|  | // TODO(crbug.com/dawn/1481): We shouldn't need to write back to WGSL if we have a CacheKey | 
|  | // built from the initial shader module input. Then, we would never need to parse the program | 
|  | // and write back out to WGSL. | 
|  | DAWN_UNREACHABLE(); | 
|  | #endif | 
|  | } | 
|  |  | 
|  | }  // namespace dawn::native |