webgl1es2_texture_camera.h

// © Joseph Cameron - All Rights Reserved

#ifndef GDK_GFX_WEBGL1ES2_TEXTURE_CAMERA_H
#define GDK_GFX_WEBGL1ES2_TEXTURE_CAMERA_H

#include <gdk/color.h>
#include <gdk/graphics_types.h>
#include <gdk/texture_camera.h>
#include <gdk/webgl1es2_camera.h>
#include <gdk/webgl1es2_texture.h>

#include <jfc/unique_handle.h>

#include <memory>
#include <optional>
#include <vector>

namespace gdk
{
    class entity;

    class webgl1es2_texture_camera final : public texture_camera, public webgl1es2_camera
    {
    public:
    //
        virtual void set_perspective_projection(const float aFieldOfView,
            const float aNearClippingPlane,
            const float aFarClippingPlane,
            const float aViewportAspectRatio) override;

        virtual void set_orthographic_projection(const float aWidth,
            const float aHeight,
            const float aNearClippingPlane,
            const float aFarClippingPlane,
            const float aViewportAspectRatio) override;

        virtual void set_clear_color(const gdk::color& acolor) override;

        virtual void set_clear_mode(const clear_mode aClearMode) override;

        virtual void set_view_matrix(const gdk::graphics_vector3_type& aWorldPos, 
            const gdk::graphics_quaternion_type& aRotation) override;
        
        virtual const std::shared_ptr<gdk::texture> get_color_texture(size_t i) const override;

        virtual const std::shared_ptr<gdk::texture> get_depth_texture() const override;
            
    //
        void activate() const;
        
        webgl1es2_texture_camera(const graphics_intvector2_type &textureSize = {1024, 1024});

        ~webgl1es2_texture_camera() = default;

    private:
        graphics_intvector2_type m_TextureSize;

        jfc::unique_handle<GLuint> m_FrameBufferHandle;
        
        jfc::unique_handle<GLuint> m_DepthBuffer;

        mutable std::optional<std::shared_ptr<webgl1es2_texture>> m_ColorBufferTexture;

        mutable std::optional<std::shared_ptr<webgl1es2_texture>> m_DepthBufferTexture;
    };
}

#endif