refactor: renderer (#29)

* refactor(render): move render files to subdirectory, add RAII vertex buffer/array classes

* refactor(render): encapsulate OpenGL textures into Texture class

* refactor(texture): encapsulate textures with unique_ptr and bind methods

Replace raw GLuint framebuffer textures with std::unique_ptr<Texture>. Update TextureManager to return const Texture* instead of GLuint. Use Texture::bind() for active texture binding. Add RGBA16F and RGB formats. Add texture parameter methods. Update destructors accordingly.

* refactor(render): use Texture, VertexBuffer, VertexArray classes

* feat(render): add FrameBuffer class to encapsulate framebuffer operations

* refactor(render): extract world rendering into WorldRenderer class

* refactor(render): rename projection and model matrix members for clarity

* chore(render): remove unused matrix members

* fix(texture-manager): correct delet_texture typo and add null checks for textures

src/CMakeLists.txt

@@ -11,7 +11,7 @@ target_sources(${PROJECT_NAME}
         gameplay/tree.cpp
         input.cpp
         map_table.cpp
-        renderer.cpp
+        render/renderer.cpp
         shader.cpp
         texture_manager.cpp
         tools/cubed_random.cpp
@@ -43,7 +43,7 @@ target_sources(${PROJECT_NAME}
         gameplay/client_player.cpp
         gameplay/session.cpp
         gameplay/network_client.cpp
-        player_renderer.cpp
+        render/player_renderer.cpp
         audio/audio_engine.cpp
         audio/audio_loader.cpp
         audio/audio_source.cpp
@@ -54,4 +54,10 @@ target_sources(${PROJECT_NAME}
         audio/audio_filter.cpp
         audio/audio_effect.cpp
         audio/audio_effect_slot.cpp
+        render/vertex_buffer.cpp
+        render/vertex_array.cpp
+        render/texture.cpp
+        render/frame_buffer.cpp
+        render/shader_manager.cpp
+        render/world_renderer.cpp
 )