1 files changed, 83 insertions, 0 deletions
diff --git a/src/platform/opengl/texture.h b/src/platform/opengl/texture.h
new file mode 100644
index 0000000..5f68c78
--- /dev/null
+++ b/src/platform/opengl/texture.h
@@ -0,0 +1,83 @@
+#pragma once
+
+#include "core/memory.h"
+
+#include <string>
+#include <cstdint>
+#include <glm/glm.hpp>
+
+namespace Donut
+{
+    class Texture
+    {
+    public:
+        virtual ~Texture() = default;
+
+        virtual auto get_width() const -> uint32_t = 0;
+        virtual auto get_height() const -> uint32_t = 0;
+        virtual auto get_renderer_id() const -> uint32_t = 0;
+
+        virtual auto set_data(void* data, uint32_t size) -> void = 0;
+        virtual auto bind(uint32_t slot = 0) const -> void = 0;
+        virtual auto bind_as_image(uint32_t slot = 0, bool read_only = false) const -> void = 0;
+
+        virtual auto operator==(const Texture& other) const -> bool = 0;
+    };
+
+    class Texture2D : public Texture
+    {
+    public:
+        Texture2D(uint32_t width, uint32_t height);
+        Texture2D(const std::string& path);
+        ~Texture2D();
+
+        auto get_width() const -> uint32_t override { return m_width; }
+        auto get_height() const -> uint32_t override { return m_height; }
+        auto get_renderer_id() const -> uint32_t override { return m_renderer_id; }
+
+        auto set_data(void* data, uint32_t size) -> void override;
+        auto bind(uint32_t slot = 0) const -> void override;
+        auto bind_as_image(uint32_t slot = 0, bool read_only = false) const -> void override;
+
+        auto operator==(const Texture& other) const -> bool override { return m_renderer_id == other.get_renderer_id(); }
+
+        static auto create(uint32_t width, uint32_t height) -> Ref<Texture2D>;
+        static auto create(const std::string& path) -> Ref<Texture2D>;
+
+    private:
+        std::string m_path;
+        uint32_t    m_width = 0, m_height = 0;
+        uint32_t    m_renderer_id = 0;
+        uint32_t    m_internal_format = 0, m_data_format = 0; // GLenum values
+    };
+
+    class CubemapTexture : public Texture
+    {
+    public:
+        CubemapTexture(uint32_t width, uint32_t height);
+        CubemapTexture(const std::string& path);
+        ~CubemapTexture();
+
+        auto get_width() const -> uint32_t override { return m_width; }
+        auto get_height() const -> uint32_t override { return m_height; }
+        auto get_renderer_id() const -> uint32_t override { return m_renderer_id; }
+
+        auto set_data(void* data, uint32_t size) -> void override;
+        auto bind(uint32_t slot = 0) const -> void override;
+        auto bind_as_image(uint32_t slot = 0, bool read_only = false) const -> void override;
+
+        auto operator==(const Texture& other) const -> bool override { return m_renderer_id == other.get_renderer_id(); }
+
+        static auto create(uint32_t width, uint32_t height) -> Ref<CubemapTexture>;
+        static auto create_from_hdri(const std::string& path) -> Ref<CubemapTexture>;
+
+    private:
+        auto LoadHDRI(const std::string& path) -> void;
+        auto convert_equirectangular_to_cubemap(float* hdr_data, int width, int height) -> void;
+
+        std::string m_path;
+        uint32_t    m_width = 0, m_height = 0;
+        uint32_t    m_renderer_id = 0;
+        uint32_t    m_internal_format = 0, m_data_format = 0; // GLenum values
+    };
+};