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#pragma once
#include <cache.h>
#include <filesystem>
#include <glArrays.h>
#include <glm/fwd.hpp>
// IWYU pragma: no_forward_declare Cache
class Image;
struct TextureOptions {
GLint wrap {GL_REPEAT};
GLint minFilter {GL_LINEAR}, magFilter {GL_LINEAR};
GLenum type {GL_TEXTURE_2D};
};
class Texture {
public:
virtual ~Texture() = default;
DEFAULT_MOVE_NO_COPY(Texture);
explicit Texture(const std::filesystem::path & fileName, TextureOptions = {});
explicit Texture(const Image & image, TextureOptions = {});
explicit Texture(GLsizei width, GLsizei height, TextureOptions = {});
explicit Texture(GLsizei width, GLsizei height, const void * data, TextureOptions = {});
static Cache<Texture, std::filesystem::path> cachedTexture;
virtual void bind(GLenum unit = GL_TEXTURE0) const;
void save(const char * path) const;
static void save(const glTexture &, const char * path);
static void saveDepth(const glTexture &, const char * path);
static void saveNormal(const glTexture &, const char * path);
protected:
static void save(const glTexture &, GLenum, GLenum, uint8_t channels, const char * path, uint8_t tgaFormat);
static glm::ivec2 getSize(const glTexture &);
glTexture m_texture;
GLenum type;
};
class TextureAtlas : public Texture {
public:
TextureAtlas(GLsizei width, GLsizei height, GLuint count);
void bind(GLenum unit = GL_TEXTURE0) const override;
GLuint add(glm::ivec2 position, glm::ivec2 size, void * data, TextureOptions = {});
private:
glTexture m_atlas;
GLuint used {};
};
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