| // Copyright 2018 The Dawn Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "dawn_native/vulkan/BindGroupVk.h" |
| |
| #include "common/BitSetIterator.h" |
| #include "dawn_native/vulkan/BindGroupLayoutVk.h" |
| #include "dawn_native/vulkan/BufferVk.h" |
| #include "dawn_native/vulkan/DeviceVk.h" |
| #include "dawn_native/vulkan/FencedDeleter.h" |
| #include "dawn_native/vulkan/SamplerVk.h" |
| #include "dawn_native/vulkan/TextureVk.h" |
| #include "dawn_native/vulkan/VulkanError.h" |
| |
| namespace dawn_native { namespace vulkan { |
| |
| // static |
| ResultOrError<BindGroup*> BindGroup::Create(Device* device, |
| const BindGroupDescriptor* descriptor) { |
| std::unique_ptr<BindGroup> group = std::make_unique<BindGroup>(device, descriptor); |
| DAWN_TRY(group->Initialize()); |
| return group.release(); |
| } |
| |
| MaybeError BindGroup::Initialize() { |
| Device* device = ToBackend(GetDevice()); |
| |
| DAWN_TRY_ASSIGN(mAllocation, ToBackend(GetLayout())->AllocateOneSet()); |
| |
| // Now do a write of a single descriptor set with all possible chained data allocated on the |
| // stack. |
| uint32_t numWrites = 0; |
| std::array<VkWriteDescriptorSet, kMaxBindingsPerGroup> writes; |
| std::array<VkDescriptorBufferInfo, kMaxBindingsPerGroup> writeBufferInfo; |
| std::array<VkDescriptorImageInfo, kMaxBindingsPerGroup> writeImageInfo; |
| |
| const auto& layoutInfo = GetLayout()->GetBindingInfo(); |
| for (uint32_t bindingIndex : IterateBitSet(layoutInfo.mask)) { |
| auto& write = writes[numWrites]; |
| write.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET; |
| write.pNext = nullptr; |
| write.dstSet = mAllocation.set; |
| write.dstBinding = bindingIndex; |
| write.dstArrayElement = 0; |
| write.descriptorCount = 1; |
| write.descriptorType = VulkanDescriptorType(layoutInfo.types[bindingIndex], |
| layoutInfo.hasDynamicOffset[bindingIndex]); |
| |
| switch (layoutInfo.types[bindingIndex]) { |
| case wgpu::BindingType::UniformBuffer: |
| case wgpu::BindingType::StorageBuffer: |
| case wgpu::BindingType::ReadonlyStorageBuffer: { |
| BufferBinding binding = GetBindingAsBufferBinding(bindingIndex); |
| |
| writeBufferInfo[numWrites].buffer = ToBackend(binding.buffer)->GetHandle(); |
| writeBufferInfo[numWrites].offset = binding.offset; |
| writeBufferInfo[numWrites].range = binding.size; |
| write.pBufferInfo = &writeBufferInfo[numWrites]; |
| } break; |
| |
| case wgpu::BindingType::Sampler: { |
| Sampler* sampler = ToBackend(GetBindingAsSampler(bindingIndex)); |
| writeImageInfo[numWrites].sampler = sampler->GetHandle(); |
| write.pImageInfo = &writeImageInfo[numWrites]; |
| } break; |
| |
| case wgpu::BindingType::SampledTexture: { |
| TextureView* view = ToBackend(GetBindingAsTextureView(bindingIndex)); |
| |
| writeImageInfo[numWrites].imageView = view->GetHandle(); |
| // TODO(cwallez@chromium.org): This isn't true in general: if the image has |
| // two read-only usages one of which is Sampled. Works for now though :) |
| writeImageInfo[numWrites].imageLayout = |
| VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL; |
| |
| write.pImageInfo = &writeImageInfo[numWrites]; |
| } break; |
| |
| default: |
| UNREACHABLE(); |
| } |
| |
| numWrites++; |
| } |
| |
| // TODO(cwallez@chromium.org): Batch these updates |
| device->fn.UpdateDescriptorSets(device->GetVkDevice(), numWrites, writes.data(), 0, |
| nullptr); |
| |
| return {}; |
| } |
| |
| BindGroup::~BindGroup() { |
| ToBackend(GetLayout())->Deallocate(&mAllocation); |
| } |
| |
| VkDescriptorSet BindGroup::GetHandle() const { |
| return mAllocation.set; |
| } |
| |
| }} // namespace dawn_native::vulkan |