109 lines
6.4 KiB
C++
109 lines
6.4 KiB
C++
/*
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Created on: Nov 10, 2019
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Copyright 2019 flyinghead
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This file is part of Flycast.
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Flycast is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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Flycast is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Flycast. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "oit_renderpass.h"
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vk::UniqueRenderPass RenderPasses::MakeRenderPass(bool initial, bool last)
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{
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vk::AttachmentDescription attachmentDescriptions[] = {
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// Swap chain image
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GetAttachment0Description(initial, last),
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// OP+PT color attachment
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vk::AttachmentDescription(vk::AttachmentDescriptionFlags(), GetColorFormat(), vk::SampleCountFlagBits::e1,
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initial ? vk::AttachmentLoadOp::eClear : vk::AttachmentLoadOp::eLoad,
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last ? vk::AttachmentStoreOp::eDontCare : vk::AttachmentStoreOp::eStore,
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vk::AttachmentLoadOp::eDontCare, vk::AttachmentStoreOp::eDontCare,
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initial ? vk::ImageLayout::eUndefined : vk::ImageLayout::eShaderReadOnlyOptimal, vk::ImageLayout::eShaderReadOnlyOptimal),
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// OP+PT depth attachment
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vk::AttachmentDescription(vk::AttachmentDescriptionFlags(), GetContext()->GetDepthFormat(), vk::SampleCountFlagBits::e1,
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initial ? vk::AttachmentLoadOp::eClear : vk::AttachmentLoadOp::eLoad,
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last ? vk::AttachmentStoreOp::eDontCare : vk::AttachmentStoreOp::eStore,
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vk::AttachmentLoadOp::eClear, vk::AttachmentStoreOp::eDontCare,
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initial ? vk::ImageLayout::eUndefined : vk::ImageLayout::eDepthStencilReadOnlyOptimal, vk::ImageLayout::eDepthStencilReadOnlyOptimal),
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// OP+PT depth attachment for subpass 1
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vk::AttachmentDescription(vk::AttachmentDescriptionFlags(), GetContext()->GetDepthFormat(), vk::SampleCountFlagBits::e1,
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initial ? vk::AttachmentLoadOp::eClear : vk::AttachmentLoadOp::eLoad,
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last ? vk::AttachmentStoreOp::eDontCare : vk::AttachmentStoreOp::eStore,
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vk::AttachmentLoadOp::eClear, vk::AttachmentStoreOp::eDontCare,
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initial ? vk::ImageLayout::eUndefined : vk::ImageLayout::eDepthStencilReadOnlyOptimal, vk::ImageLayout::eDepthStencilReadOnlyOptimal),
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};
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vk::AttachmentReference swapChainReference(0, vk::ImageLayout::eColorAttachmentOptimal);
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vk::AttachmentReference colorReference(1, vk::ImageLayout::eColorAttachmentOptimal);
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vk::AttachmentReference depthReference(2, vk::ImageLayout::eDepthStencilAttachmentOptimal);
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vk::AttachmentReference depthReadOnlyRef(2, vk::ImageLayout::eDepthStencilReadOnlyOptimal);
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vk::AttachmentReference depthReference2(3, vk::ImageLayout::eDepthStencilAttachmentOptimal);
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vk::AttachmentReference colorInput(1, vk::ImageLayout::eShaderReadOnlyOptimal);
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// vk 1.2 sdk wants this layout for subpass 2
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vk::AttachmentReference depthRefStencilReadOnly(2, vk::ImageLayout::eDepthAttachmentStencilReadOnlyOptimal);
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vk::SubpassDescription subpasses[] = {
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// Depth and modvol pass FIXME subpass 0 shouldn't reference the color attachment
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vk::SubpassDescription(vk::SubpassDescriptionFlags(), vk::PipelineBindPoint::eGraphics,
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0, nullptr,
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1, &colorReference,
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nullptr,
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&depthReference),
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// Color pass
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vk::SubpassDescription(vk::SubpassDescriptionFlags(), vk::PipelineBindPoint::eGraphics,
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1, &depthReadOnlyRef,
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1, &colorReference,
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nullptr,
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&depthReference2),
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// Final pass
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vk::SubpassDescription(vk::SubpassDescriptionFlags(), vk::PipelineBindPoint::eGraphics,
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1, &colorInput,
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1, &swapChainReference,
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nullptr,
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&depthRefStencilReadOnly), // depth-only Tr pass when continuation
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};
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std::vector<vk::SubpassDependency> dependencies = GetSubpassDependencies();
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dependencies.emplace_back(VK_SUBPASS_EXTERNAL, 0, vk::PipelineStageFlagBits::eFragmentShader,
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vk::PipelineStageFlagBits::eEarlyFragmentTests | vk::PipelineStageFlagBits::eLateFragmentTests,
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vk::AccessFlagBits::eInputAttachmentRead | vk::AccessFlagBits::eShaderRead,
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vk::AccessFlagBits::eDepthStencilAttachmentRead | vk::AccessFlagBits::eDepthStencilAttachmentWrite,
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vk::DependencyFlagBits::eByRegion);
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dependencies.emplace_back(VK_SUBPASS_EXTERNAL, 1, vk::PipelineStageFlagBits::eFragmentShader, vk::PipelineStageFlagBits::eColorAttachmentOutput,
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vk::AccessFlagBits::eInputAttachmentRead, vk::AccessFlagBits::eColorAttachmentWrite, vk::DependencyFlagBits::eByRegion),
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dependencies.emplace_back(0, 1, vk::PipelineStageFlagBits::eLateFragmentTests, vk::PipelineStageFlagBits::eFragmentShader,
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vk::AccessFlagBits::eDepthStencilAttachmentRead | vk::AccessFlagBits::eDepthStencilAttachmentWrite,
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vk::AccessFlagBits::eInputAttachmentRead | vk::AccessFlagBits::eShaderRead, vk::DependencyFlagBits::eByRegion);
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dependencies.emplace_back(1, 2, vk::PipelineStageFlagBits::eColorAttachmentOutput, vk::PipelineStageFlagBits::eFragmentShader,
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vk::AccessFlagBits::eColorAttachmentWrite, vk::AccessFlagBits::eInputAttachmentRead, vk::DependencyFlagBits::eByRegion);
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// This dependency is only needed if the render pass isn't the last: it's needed for the depth-only Tr pass
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// Unfortunately we want all render passes to be compatible, and that means all attachments must be identical
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dependencies.emplace_back(1, 2, vk::PipelineStageFlagBits::eFragmentShader,
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vk::PipelineStageFlagBits::eEarlyFragmentTests | vk::PipelineStageFlagBits::eLateFragmentTests,
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vk::AccessFlagBits::eInputAttachmentRead | vk::AccessFlagBits::eShaderRead,
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vk::AccessFlagBits::eDepthStencilAttachmentRead | vk::AccessFlagBits::eDepthStencilAttachmentWrite,
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vk::DependencyFlagBits::eByRegion);
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dependencies.emplace_back(2, 2, vk::PipelineStageFlagBits::eFragmentShader, vk::PipelineStageFlagBits::eFragmentShader,
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vk::AccessFlagBits::eShaderRead | vk::AccessFlagBits::eShaderWrite,
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vk::AccessFlagBits::eShaderRead | vk::AccessFlagBits::eShaderWrite,
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vk::DependencyFlagBits::eByRegion);
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return GetContext()->GetDevice().createRenderPassUnique(vk::RenderPassCreateInfo(vk::RenderPassCreateFlags(),
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ARRAY_SIZE(attachmentDescriptions), attachmentDescriptions,
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ARRAY_SIZE(subpasses), subpasses,
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dependencies.size(), dependencies.data()));
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}
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