73 lines
2.3 KiB
C++
73 lines
2.3 KiB
C++
#pragma once
|
||
|
||
#include <graphics/texture.h>
|
||
#include <graphics/alpha_mask.h>
|
||
|
||
#include <glad/glad.h>
|
||
|
||
#include <memory>
|
||
#include <string>
|
||
|
||
namespace extra2d {
|
||
|
||
// ============================================================================
|
||
// OpenGL 纹理实现
|
||
// ============================================================================
|
||
class GLTexture : public Texture {
|
||
public:
|
||
GLTexture(int width, int height, const uint8_t* pixels, int channels);
|
||
GLTexture(const std::string& filepath);
|
||
~GLTexture();
|
||
|
||
// Texture 接口实现
|
||
int getWidth() const override { return width_; }
|
||
int getHeight() const override { return height_; }
|
||
Size getSize() const override { return Size(static_cast<float>(width_), static_cast<float>(height_)); }
|
||
int getChannels() const override { return channels_; }
|
||
PixelFormat getFormat() const override;
|
||
void* getNativeHandle() const override { return reinterpret_cast<void*>(static_cast<uintptr_t>(textureID_)); }
|
||
bool isValid() const override { return textureID_ != 0; }
|
||
void setFilter(bool linear) override;
|
||
void setWrap(bool repeat) override;
|
||
|
||
// 从参数创建纹理的工厂方法
|
||
static Ptr<Texture> create(int width, int height, PixelFormat format);
|
||
|
||
// 加载压缩纹理（KTX/DDS 格式）
|
||
bool loadCompressed(const std::string& filepath);
|
||
|
||
// OpenGL 特定
|
||
GLuint getTextureID() const { return textureID_; }
|
||
void bind(unsigned int slot = 0) const;
|
||
void unbind() const;
|
||
|
||
// 获取纹理数据大小（字节），用于 VRAM 跟踪
|
||
size_t getDataSize() const { return dataSize_; }
|
||
|
||
// Alpha 遮罩
|
||
bool hasAlphaMask() const { return alphaMask_ != nullptr && alphaMask_->isValid(); }
|
||
const AlphaMask* getAlphaMask() const { return alphaMask_.get(); }
|
||
void generateAlphaMask(); // 从当前纹理数据生成遮罩
|
||
|
||
private:
|
||
GLuint textureID_;
|
||
int width_;
|
||
int height_;
|
||
int channels_;
|
||
PixelFormat format_;
|
||
size_t dataSize_;
|
||
|
||
// 原始像素数据（用于生成遮罩）
|
||
std::vector<uint8_t> pixelData_;
|
||
std::unique_ptr<AlphaMask> alphaMask_;
|
||
|
||
void createTexture(const uint8_t* pixels);
|
||
|
||
// KTX 文件加载
|
||
bool loadKTX(const std::string& filepath);
|
||
// DDS 文件加载
|
||
bool loadDDS(const std::string& filepath);
|
||
};
|
||
|
||
} // namespace extra2d
|