mirror of
https://github.com/love2d/love.git
synced 2026-08-15 15:51:12 +02:00
Alex Szpakowski
122 lines
3.7 KiB
Objective-C
122 lines
3.7 KiB
Objective-C
/**
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* Copyright (c) 2006-2020 LOVE Development Team
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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**/
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#pragma once
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#include "libraries/xxHash/xxhash.h"
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#include "graphics/Shader.h"
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#include "graphics/Graphics.h"
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#include "graphics/renderstate.h"
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#include "graphics/vertex.h"
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#include "Metal.h"
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#import <Metal/MTLRenderPipeline.h>
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#include <unordered_map>
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#include <map>
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#include <string>
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namespace love
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{
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namespace graphics
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{
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namespace metal
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{
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static const int DEFAULT_VERTEX_BUFFER_BINDING = 1;
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static const int VERTEX_BUFFER_BINDING_START = 2;
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class Shader final : public love::graphics::Shader
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{
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public:
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struct RenderPipelineKey
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{
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VertexAttributes vertexAttributes;
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BlendState blend;
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uint64 colorRenderTargetFormats;
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uint32 depthStencilFormat;
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ColorChannelMask colorChannelMask;
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uint8 msaa;
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RenderPipelineKey()
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{
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memset(this, 0, sizeof(RenderPipelineKey));
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}
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bool operator == (const RenderPipelineKey &other) const
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{
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return memcmp(this, &other, sizeof(RenderPipelineKey)) == 0;
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}
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};
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Shader(id<MTLDevice> device, love::graphics::ShaderStage *vertex, love::graphics::ShaderStage *pixel);
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virtual ~Shader();
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// Implements Shader.
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void attach() override;
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std::string getWarnings() const override { return ""; }
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int getVertexAttributeIndex(const std::string &name) override;
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const UniformInfo *getUniformInfo(const std::string &name) const override;
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const UniformInfo *getUniformInfo(BuiltinUniform builtin) const override;
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void updateUniform(const UniformInfo *info, int count) override;
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void sendTextures(const UniformInfo *info, love::graphics::Texture **textures, int count) override;
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void sendBuffers(const UniformInfo *info, love::graphics::Buffer **buffers, int count) override;
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bool hasUniform(const std::string &name) const override;
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ptrdiff_t getHandle() const override { return 0; }
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void setVideoTextures(love::graphics::Texture *ytexture, love::graphics::Texture *cbtexture, love::graphics::Texture *crtexture) override {}
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id<MTLRenderPipelineState> getCachedRenderPipeline(const RenderPipelineKey &key);
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static int getUniformBufferBinding();
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uint8 *getLocalUniformBufferData() { return localUniformBufferData; }
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size_t getLocalUniformBufferSize() const { return localUniformBufferSize; }
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size_t getBuiltinUniformDataOffset() const { return builtinUniformDataOffset; }
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private:
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struct RenderPipelineHasher
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{
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size_t operator() (const RenderPipelineKey &key) const
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{
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return XXH32(&key, sizeof(RenderPipelineKey), 0);
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}
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};
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id<MTLFunction> functions[ShaderStage::STAGE_MAX_ENUM];
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UniformInfo *builtinUniformInfo[BUILTIN_MAX_ENUM];
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std::map<std::string, UniformInfo> uniforms;
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uint8 *localUniformBufferData;
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size_t localUniformBufferSize;
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size_t builtinUniformDataOffset;
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std::map<std::string, int> attributes;
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std::unordered_map<RenderPipelineKey, const void *, RenderPipelineHasher> cachedRenderPipelines;
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}; // Metal
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} // metal
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} // graphics
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} // love
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