axmol/cocos/renderer/backend/Texture.h

77 lines
2.5 KiB
C++

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