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140 lines
4.2 KiB
140 lines
4.2 KiB
/****************************************************************************
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Copyright (c) 2019-2023 Xiamen Yaji Software Co., Ltd.
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http://www.cocos.com
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights to
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use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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of the Software, and to permit persons to whom the Software is furnished to do so,
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subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#pragma once
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#include <stack>
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#include "base/Macros.h"
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#include "base/TypeDef.h"
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#include "core/ArrayBuffer.h"
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#include "core/assets/Material.h"
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#include "renderer/gfx-base/GFXDef-common.h"
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#include "scene/Pass.h"
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namespace cc {
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class RenderEntity;
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enum class StencilStage : uint8_t {
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// Stencil disabled
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DISABLED = 0,
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// Clear stencil buffer
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CLEAR = 1,
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// Entering a new level, should handle new stencil
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ENTER_LEVEL = 2,
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// In content
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ENABLED = 3,
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// Exiting a level, should restore old stencil or disable
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EXIT_LEVEL = 4,
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// Clear stencil buffer & USE INVERTED
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CLEAR_INVERTED = 5,
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// Entering a new level & USE INVERTED
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ENTER_LEVEL_INVERTED = 6
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};
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struct StencilEntity {
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uint32_t stencilTest{0};
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gfx::ComparisonFunc func{gfx::ComparisonFunc::ALWAYS};
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uint32_t stencilMask{0};
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uint32_t writeMask{0};
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gfx::StencilOp failOp{gfx::StencilOp::KEEP};
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gfx::StencilOp zFailOp{gfx::StencilOp::KEEP};
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gfx::StencilOp passOp{gfx::StencilOp::KEEP};
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uint32_t ref{0};
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};
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class StencilManager final {
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public:
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static StencilManager* getInstance();
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StencilManager() = default;
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~StencilManager();
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inline StencilStage getStencilStage() const { return _stage; }
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gfx::DepthStencilState* getDepthStencilState(StencilStage stage, Material* mat = nullptr);
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void setDepthStencilStateFromStage(StencilStage stage);
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inline uint32_t getMaskStackSize() const { return _maskStackSize; }
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inline void setMaskStackSize(uint32_t size) {
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_maskStackSize = size;
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}
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inline void pushMask() {
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++_maskStackSize;
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}
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StencilStage clear(RenderEntity* entity);
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void enterLevel(RenderEntity* entity);
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inline void enableMask() {
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_stage = StencilStage::ENABLED;
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}
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inline void exitMask() {
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if (_maskStackSize == 0) {
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return;
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}
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--_maskStackSize;
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if (_maskStackSize == 0) {
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_stage = StencilStage::DISABLED;
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} else {
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_stage = StencilStage::ENABLED;
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}
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}
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inline uint32_t getWriteMask() const {
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return 1 << (_maskStackSize - 1);
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}
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inline uint32_t getExitWriteMask() const {
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return 1 << _maskStackSize;
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}
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inline uint32_t getStencilRef() const {
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uint32_t result = 0;
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for (uint32_t i = 0; i < _maskStackSize; i++) {
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result += (1 << i);
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}
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return result;
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}
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inline uint32_t getStencilHash(StencilStage stage) const {
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return ((static_cast<uint32_t>(stage)) << 8) | _maskStackSize;
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}
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void setStencilStage(uint32_t stageIndex);
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private:
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CC_DISALLOW_COPY_MOVE_ASSIGN(StencilManager);
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StencilEntity _stencilPattern;
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ArrayBuffer::Ptr _stencilSharedBuffer;
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StencilStage _stage{StencilStage::DISABLED};
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uint32_t _maskStackSize{0};
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ccstd::unordered_map<uint32_t, gfx::DepthStencilState*> _cacheStateMap;
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ccstd::unordered_map<uint32_t, gfx::DepthStencilState*> _cacheStateMapWithDepth;
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};
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} // namespace cc
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