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// 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/RenderPassCache.h"
#include "common/BitSetIterator.h"
#include "common/HashUtils.h"
#include "dawn_native/vulkan/DeviceVk.h"
#include "dawn_native/vulkan/TextureVk.h"
#include "dawn_native/vulkan/VulkanError.h"
namespace dawn_native { namespace vulkan {
namespace {
VkAttachmentLoadOp VulkanAttachmentLoadOp(wgpu::LoadOp op) {
switch (op) {
case wgpu::LoadOp::Load:
return VK_ATTACHMENT_LOAD_OP_LOAD;
case wgpu::LoadOp::Clear:
return VK_ATTACHMENT_LOAD_OP_CLEAR;
}
UNREACHABLE();
}
} // anonymous namespace
// RenderPassCacheQuery
void RenderPassCacheQuery::SetColor(ColorAttachmentIndex index,
wgpu::TextureFormat format,
wgpu::LoadOp loadOp,
bool hasResolveTarget) {
colorMask.set(index);
colorFormats[index] = format;
colorLoadOp[index] = loadOp;
resolveTargetMask[index] = hasResolveTarget;
}
void RenderPassCacheQuery::SetDepthStencil(wgpu::TextureFormat format,
wgpu::LoadOp depthLoadOp,
wgpu::LoadOp stencilLoadOp) {
hasDepthStencil = true;
depthStencilFormat = format;
this->depthLoadOp = depthLoadOp;
this->stencilLoadOp = stencilLoadOp;
}
void RenderPassCacheQuery::SetSampleCount(uint32_t sampleCount) {
this->sampleCount = sampleCount;
}
// RenderPassCache
RenderPassCache::RenderPassCache(Device* device) : mDevice(device) {
}
RenderPassCache::~RenderPassCache() {
std::lock_guard<std::mutex> lock(mMutex);
for (auto it : mCache) {
mDevice->fn.DestroyRenderPass(mDevice->GetVkDevice(), it.second, nullptr);
}
mCache.clear();
}
ResultOrError<VkRenderPass> RenderPassCache::GetRenderPass(const RenderPassCacheQuery& query) {
std::lock_guard<std::mutex> lock(mMutex);
auto it = mCache.find(query);
if (it != mCache.end()) {
return VkRenderPass(it->second);
}
VkRenderPass renderPass;
DAWN_TRY_ASSIGN(renderPass, CreateRenderPassForQuery(query));
mCache.emplace(query, renderPass);
return renderPass;
}
ResultOrError<VkRenderPass> RenderPassCache::CreateRenderPassForQuery(
const RenderPassCacheQuery& query) const {
// The Vulkan subpasses want to know the layout of the attachments with VkAttachmentRef.
// Precompute them as they must be pointer-chained in VkSubpassDescription
std::array<VkAttachmentReference, kMaxColorAttachments> colorAttachmentRefs;
std::array<VkAttachmentReference, kMaxColorAttachments> resolveAttachmentRefs;
VkAttachmentReference depthStencilAttachmentRef;
// Contains the attachment description that will be chained in the create info
// The order of all attachments in attachmentDescs is "color-depthstencil-resolve".
constexpr uint8_t kMaxAttachmentCount = kMaxColorAttachments * 2 + 1;
std::array<VkAttachmentDescription, kMaxAttachmentCount> attachmentDescs = {};
VkSampleCountFlagBits vkSampleCount = VulkanSampleCount(query.sampleCount);
uint32_t colorAttachmentIndex = 0;
for (ColorAttachmentIndex i : IterateBitSet(query.colorMask)) {
auto& attachmentRef = colorAttachmentRefs[colorAttachmentIndex];
auto& attachmentDesc = attachmentDescs[colorAttachmentIndex];
attachmentRef.attachment = colorAttachmentIndex;
attachmentRef.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
attachmentDesc.flags = 0;
attachmentDesc.format = VulkanImageFormat(mDevice, query.colorFormats[i]);
attachmentDesc.samples = vkSampleCount;
attachmentDesc.loadOp = VulkanAttachmentLoadOp(query.colorLoadOp[i]);
attachmentDesc.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
attachmentDesc.initialLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
attachmentDesc.finalLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
++colorAttachmentIndex;
}
uint32_t attachmentCount = colorAttachmentIndex;
VkAttachmentReference* depthStencilAttachment = nullptr;
if (query.hasDepthStencil) {
auto& attachmentDesc = attachmentDescs[attachmentCount];
depthStencilAttachment = &depthStencilAttachmentRef;
depthStencilAttachmentRef.attachment = attachmentCount;
depthStencilAttachmentRef.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
attachmentDesc.flags = 0;
attachmentDesc.format = VulkanImageFormat(mDevice, query.depthStencilFormat);
attachmentDesc.samples = vkSampleCount;
attachmentDesc.loadOp = VulkanAttachmentLoadOp(query.depthLoadOp);
attachmentDesc.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
attachmentDesc.stencilLoadOp = VulkanAttachmentLoadOp(query.stencilLoadOp);
attachmentDesc.stencilStoreOp = VK_ATTACHMENT_STORE_OP_STORE;
attachmentDesc.initialLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
attachmentDesc.finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
++attachmentCount;
}
uint32_t resolveAttachmentIndex = 0;
for (ColorAttachmentIndex i : IterateBitSet(query.resolveTargetMask)) {
auto& attachmentRef = resolveAttachmentRefs[resolveAttachmentIndex];
auto& attachmentDesc = attachmentDescs[attachmentCount];
attachmentRef.attachment = attachmentCount;
attachmentRef.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
attachmentDesc.flags = 0;
attachmentDesc.format = VulkanImageFormat(mDevice, query.colorFormats[i]);
attachmentDesc.samples = VK_SAMPLE_COUNT_1_BIT;
attachmentDesc.loadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
attachmentDesc.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
attachmentDesc.initialLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
attachmentDesc.finalLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
++attachmentCount;
++resolveAttachmentIndex;
}
// All color attachments without a corresponding resolve attachment must be set to VK_ATTACHMENT_UNUSED
for (; resolveAttachmentIndex < colorAttachmentIndex; resolveAttachmentIndex++) {
auto& attachmentRef = resolveAttachmentRefs[resolveAttachmentIndex];
attachmentRef.attachment = VK_ATTACHMENT_UNUSED;
attachmentRef.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL; // The Khronos Vulkan validation layer will complain if not set
}
VkAttachmentReference* resolveTargetAttachmentRefs =
query.resolveTargetMask.any() ? resolveAttachmentRefs.data() : nullptr;
// Create the VkSubpassDescription that will be chained in the VkRenderPassCreateInfo
VkSubpassDescription subpassDesc;
subpassDesc.flags = 0;
subpassDesc.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
subpassDesc.inputAttachmentCount = 0;
subpassDesc.pInputAttachments = nullptr;
subpassDesc.colorAttachmentCount = colorAttachmentIndex;
subpassDesc.pColorAttachments = colorAttachmentRefs.data();
subpassDesc.pResolveAttachments = resolveTargetAttachmentRefs;
subpassDesc.pDepthStencilAttachment = depthStencilAttachment;
subpassDesc.preserveAttachmentCount = 0;
subpassDesc.pPreserveAttachments = nullptr;
// Chain everything in VkRenderPassCreateInfo
VkRenderPassCreateInfo createInfo;
createInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
createInfo.pNext = nullptr;
createInfo.flags = 0;
createInfo.attachmentCount = attachmentCount;
createInfo.pAttachments = attachmentDescs.data();
createInfo.subpassCount = 1;
createInfo.pSubpasses = &subpassDesc;
createInfo.dependencyCount = 0;
createInfo.pDependencies = nullptr;
// Create the render pass from the zillion parameters
VkRenderPass renderPass;
DAWN_TRY(CheckVkSuccess(mDevice->fn.CreateRenderPass(mDevice->GetVkDevice(), &createInfo,
nullptr, &*renderPass),
"CreateRenderPass"));
return renderPass;
}
// RenderPassCache
size_t RenderPassCache::CacheFuncs::operator()(const RenderPassCacheQuery& query) const {
size_t hash = Hash(query.colorMask);
HashCombine(&hash, Hash(query.resolveTargetMask));
for (ColorAttachmentIndex i : IterateBitSet(query.colorMask)) {
HashCombine(&hash, query.colorFormats[i], query.colorLoadOp[i]);
}
HashCombine(&hash, query.hasDepthStencil);
if (query.hasDepthStencil) {
HashCombine(&hash, query.depthStencilFormat, query.depthLoadOp, query.stencilLoadOp);
}
HashCombine(&hash, query.sampleCount);
return hash;
}
bool RenderPassCache::CacheFuncs::operator()(const RenderPassCacheQuery& a,
const RenderPassCacheQuery& b) const {
if (a.colorMask != b.colorMask) {
return false;
}
if (a.resolveTargetMask != b.resolveTargetMask) {
return false;
}
if (a.sampleCount != b.sampleCount) {
return false;
}
for (ColorAttachmentIndex i : IterateBitSet(a.colorMask)) {
if ((a.colorFormats[i] != b.colorFormats[i]) ||
(a.colorLoadOp[i] != b.colorLoadOp[i])) {
return false;
}
}
if (a.hasDepthStencil != b.hasDepthStencil) {
return false;
}
if (a.hasDepthStencil) {
if ((a.depthStencilFormat != b.depthStencilFormat) ||
(a.depthLoadOp != b.depthLoadOp) || (a.stencilLoadOp != b.stencilLoadOp)) {
return false;
}
}
return true;
}
}} // namespace dawn_native::vulkan