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https://github.com/encounter/dawn-cmake.git
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b985431c82
* load ops: design + implementation (all backends) * Animometer/glTFViewer: use just one subpass per frame
97 lines
3.7 KiB
C++
97 lines
3.7 KiB
C++
// Copyright 2017 The NXT Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef BACKEND_RENDERPASS_H_
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#define BACKEND_RENDERPASS_H_
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#include "backend/Builder.h"
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#include "backend/Forward.h"
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#include "backend/RefCounted.h"
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#include "common/Constants.h"
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#include "nxt/nxtcpp.h"
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#include <array>
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#include <bitset>
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#include <vector>
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namespace backend {
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class RenderPassBase : public RefCounted {
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public:
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RenderPassBase(RenderPassBuilder* builder);
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struct AttachmentInfo {
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nxt::TextureFormat format;
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nxt::LoadOp colorLoadOp = nxt::LoadOp::Load;
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nxt::LoadOp depthLoadOp = nxt::LoadOp::Load;
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nxt::LoadOp stencilLoadOp = nxt::LoadOp::Load;
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// The first subpass that this attachment is used in.
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// This is used to determine, for each subpass, whether each
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// of its attachments is being used for the first time.
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uint32_t firstSubpass = UINT32_MAX;
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};
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struct SubpassInfo {
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// Set of locations which are set
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std::bitset<kMaxColorAttachments> colorAttachmentsSet;
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// Mapping from location to attachment slot
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std::array<uint32_t, kMaxColorAttachments> colorAttachments;
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bool depthStencilAttachmentSet = false;
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uint32_t depthStencilAttachment = 0;
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};
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uint32_t GetAttachmentCount() const;
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const AttachmentInfo& GetAttachmentInfo(uint32_t attachment) const;
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uint32_t GetSubpassCount() const;
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const SubpassInfo& GetSubpassInfo(uint32_t subpass) const;
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bool IsCompatibleWith(const RenderPassBase* other) const;
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private:
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std::vector<AttachmentInfo> attachments;
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std::vector<SubpassInfo> subpasses;
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};
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class RenderPassBuilder : public Builder<RenderPassBase> {
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public:
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RenderPassBuilder(DeviceBase* device);
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// NXT API
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RenderPassBase* GetResultImpl() override;
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void SetAttachmentCount(uint32_t attachmentCount);
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void AttachmentSetFormat(uint32_t attachmentSlot, nxt::TextureFormat format);
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void AttachmentSetColorLoadOp(uint32_t attachmentSlot, nxt::LoadOp op);
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void AttachmentSetDepthStencilLoadOps(uint32_t attachmentSlot, nxt::LoadOp depthOp, nxt::LoadOp stencilOp);
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void SetSubpassCount(uint32_t subpassCount);
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void SubpassSetColorAttachment(uint32_t subpass, uint32_t outputAttachmentLocation, uint32_t attachmentSlot);
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void SubpassSetDepthStencilAttachment(uint32_t subpass, uint32_t attachmentSlot);
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private:
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friend class RenderPassBase;
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enum AttachmentProperty {
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ATTACHMENT_PROPERTY_FORMAT,
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ATTACHMENT_PROPERTY_COUNT
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};
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std::vector<std::bitset<ATTACHMENT_PROPERTY_COUNT>> attachmentProperties;
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std::vector<RenderPassBase::AttachmentInfo> attachments;
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std::vector<RenderPassBase::SubpassInfo> subpasses;
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int propertiesSet = 0;
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};
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}
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#endif // BACKEND_RENDERPASS_H_
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