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// Copyright 2017 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/opengl/PipelineLayoutGL.h"
#include "dawn/common/BitSetIterator.h"
#include "dawn/common/MatchVariant.h"
#include "dawn/native/BindGroupLayoutInternal.h"
#include "dawn/native/opengl/DeviceGL.h"
namespace dawn::native::opengl {
PipelineLayout::PipelineLayout(Device* device,
const UnpackedPtr<PipelineLayoutDescriptor>& descriptor)
: PipelineLayoutBase(device, descriptor) {
GLuint uboIndex = 0;
GLuint samplerIndex = 0;
GLuint sampledTextureIndex = 0;
GLuint ssboIndex = 0;
GLuint storageTextureIndex = 0;
for (BindGroupIndex group : IterateBitSet(GetBindGroupLayoutsMask())) {
const BindGroupLayoutInternalBase* bgl = GetBindGroupLayout(group);
mIndexInfo[group].resize(bgl->GetBindingCount());
for (BindingIndex bindingIndex{0}; bindingIndex < bgl->GetBindingCount(); ++bindingIndex) {
const BindingInfo& bindingInfo = bgl->GetBindingInfo(bindingIndex);
MatchVariant(
bindingInfo.bindingLayout,
[&](const BufferBindingInfo& layout) {
switch (layout.type) {
case wgpu::BufferBindingType::Uniform:
mIndexInfo[group][bindingIndex] = uboIndex;
uboIndex++;
break;
case wgpu::BufferBindingType::Storage:
case kInternalStorageBufferBinding:
case wgpu::BufferBindingType::ReadOnlyStorage:
mIndexInfo[group][bindingIndex] = ssboIndex;
ssboIndex++;
break;
case wgpu::BufferBindingType::Undefined:
DAWN_UNREACHABLE();
}
},
[&](const StaticSamplerHolderBindingLayout&) {
mIndexInfo[group][bindingIndex] = samplerIndex;
samplerIndex++;
},
[&](const SamplerBindingLayout&) {
mIndexInfo[group][bindingIndex] = samplerIndex;
samplerIndex++;
},
[&](const TextureBindingInfo&) {
mIndexInfo[group][bindingIndex] = sampledTextureIndex;
sampledTextureIndex++;
},
[&](const StorageTextureBindingInfo&) {
mIndexInfo[group][bindingIndex] = storageTextureIndex;
storageTextureIndex++;
});
}
}
mNumSamplers = samplerIndex;
mNumSampledTextures = sampledTextureIndex;
// Set internal uniform binding as the next unused uboIndex.
mInternalUniformBinding = uboIndex;
}
const PipelineLayout::BindingIndexInfo& PipelineLayout::GetBindingIndexInfo() const {
return mIndexInfo;
}
GLuint PipelineLayout::GetTextureUnitsUsed() const {
return 0;
}
size_t PipelineLayout::GetNumSamplers() const {
return mNumSamplers;
}
size_t PipelineLayout::GetNumSampledTextures() const {
return mNumSampledTextures;
}
GLuint PipelineLayout::GetInternalUniformBinding() const {
return mInternalUniformBinding;
}
} // namespace dawn::native::opengl