Work on moving infrastruture to this project

1 files changed, 66 insertions, 0 deletions

diff --git a/source/Texture.hpp b/source/Texture.hpp
new file mode 100644
index 0000000..c372998
--- /dev/null
+++ b/source/Texture.hpp
@@ -0,0 +1,66 @@
+#pragma once
+
+#include "RcPtr.hpp"
+
+#include <glad/glad.h>
+#include <glm/glm.hpp>
+#include <memory>
+
+// TODO abstract texture traits such as component sizes from OpenGL
+
+class TextureInfo {
+public:
+	glm::ivec2 size;
+	bool isAtlas = false;
+};
+
+class Texture : public RefCounted {
+	friend class TextureStitcher;
+
+private:
+	TextureInfo mInfo;
+	GLuint mHandle = 0;
+
+public:
+	Texture() = default;
+	~Texture();
+
+	Texture(const Texture&) = delete;
+	Texture& operator=(const Texture&) = delete;
+	Texture(Texture&&) = default;
+	Texture& operator=(Texture&&) = default;
+
+	enum Filtering {
+		LinearFilter,
+		NearestFilter,
+	};
+
+	struct TextureProperties {
+		Filtering minifyingFilter = LinearFilter;
+		Filtering magnifyingFilter = LinearFilter;
+	};
+
+	bool InitFromFile(const char* filePath, const TextureProperties& props, bool flipVertically = false);
+	// bool InitFromImage(const Image& image, const TextureProperties& props, bool flipVertically = false);
+
+	const TextureInfo& GetInfo() const;
+	GLuint GetHandle() const;
+
+	bool IsValid() const;
+};
+
+/// A pure numerical subregion of a texture. u0/v0 are the UV coordinates of bottom left
+/// corner, and u1/v1 are the top left corner.
+struct Subregion {
+	/// Bottom left corner
+	float u0 = 0.0f;
+	float v0 = 0.0f;
+	/// Top right corner
+	float u1 = 0.0f;
+	float v1 = 0.0f;
+};
+
+/// A subregion of a specific texture.
+struct TextureSubregion : public Subregion {
+	RcPtr<Texture> atlasTexture;
+};