mirror of https://github.com/axmolengine/axmol.git
77 lines
2.5 KiB
C++
77 lines
2.5 KiB
C++
#pragma once
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#include "Types.h"
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#include "base/CCRef.h"
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#include <cassert>
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#include <functional>
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CC_BACKEND_BEGIN
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struct TextureDescriptor
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{
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TextureType textureType = TextureType::TEXTURE_2D;
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PixelFormat textureFormat = PixelFormat::RGBA8888;
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TextureUsage textureUsage = TextureUsage::READ;
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uint32_t width = 0;
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uint32_t height = 0;
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uint32_t depth = 0;
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SamplerDescriptor samplerDescriptor;
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};
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class TextureBackend : public Ref
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{
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public:
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virtual void updateSamplerDescriptor(const SamplerDescriptor &sampler) = 0;
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virtual void getBytes(int x, int y, int width, int height, bool flipImage, std::function<void(const unsigned char*, int, int)> callback) = 0;
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virtual void generateMipmaps() = 0;
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virtual void updateTextureDescriptor(const TextureDescriptor& descriptor);
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inline PixelFormat getTextureFormat() const { return _textureFormat; }
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inline TextureUsage getTextureUsage() const { return _textureUsage; }
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inline TextureType getTextureType() const { return _textureType; }
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inline bool hasMipmaps() const { return _hasMipmaps; }
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protected:
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TextureBackend(const TextureDescriptor& descriptor);
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virtual ~TextureBackend();
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// The bytes of all components.
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uint8_t _bitsPerElement = 0;
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bool _hasMipmaps = false;
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bool _isCompressed = false;
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uint32_t _width = 0;
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uint32_t _height = 0;
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TextureType _textureType = TextureType::TEXTURE_2D;
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PixelFormat _textureFormat = PixelFormat::RGBA8888;
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TextureUsage _textureUsage = TextureUsage::READ;
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};
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class Texture2DBackend : public TextureBackend
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{
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public:
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virtual void updateData(uint8_t* data, uint32_t width , uint32_t height, uint32_t level) = 0;
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virtual void updateCompressedData(uint8_t* data, uint32_t width , uint32_t height, uint32_t dataLen, uint32_t level) = 0;
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virtual void updateSubData(uint32_t xoffset, uint32_t yoffset, uint32_t width, uint32_t height, uint32_t level, uint8_t* data) = 0;
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virtual void updateCompressedSubData(uint32_t xoffset, uint32_t yoffset, uint32_t width, uint32_t height, uint32_t dataLen, uint32_t level, uint8_t* data) = 0;
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inline uint32_t getWidth() const { return _width; }
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inline uint32_t getHeight() const { return _height; }
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protected:
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Texture2DBackend(const TextureDescriptor& descriptor);
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};
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class TextureCubemapBackend : public TextureBackend
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{
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public:
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virtual void updateFaceData(TextureCubeFace side, void *data) = 0;
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protected:
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TextureCubemapBackend(const TextureDescriptor& descriptor);
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};
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CC_BACKEND_END
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