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/**************************************************************************/
/*  rasterizer_canvas_gles2.h                                             */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
/*                        https://godotengine.org                         */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
/*                                                                        */
/* Permission is hereby granted, free of charge, to any person obtaining  */
/* a copy of this software and associated documentation files (the        */
/* "Software"), to deal in the Software without restriction, including    */
/* without limitation the rights to use, copy, modify, merge, publish,    */
/* distribute, sublicense, and/or sell copies of the Software, and to     */
/* permit persons to whom the Software is furnished to do so, subject to  */
/* the following conditions:                                              */
/*                                                                        */
/* The above copyright notice and this permission notice shall be         */
/* included in all copies or substantial portions of the Software.        */
/*                                                                        */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
/**************************************************************************/

#ifndef RASTERIZER_CANVAS_GLES2_H
#define RASTERIZER_CANVAS_GLES2_H

#include "drivers/gles_common/rasterizer_canvas_batcher.h"
#include "rasterizer_canvas_base_gles2.h"

class RasterizerSceneGLES2;

class RasterizerCanvasGLES2 : public RasterizerCanvasBaseGLES2, public RasterizerCanvasBatcher<RasterizerCanvasGLES2, RasterizerStorageGLES2> {
	friend class RasterizerCanvasBatcher<RasterizerCanvasGLES2, RasterizerStorageGLES2>;

public:
	virtual void canvas_render_items_begin(const Color &p_modulate, Light *p_light, const Transform2D &p_base_transform);
	virtual void canvas_render_items_end();
	virtual void canvas_render_items(Item *p_item_list, int p_z, const Color &p_modulate, Light *p_light, const Transform2D &p_base_transform);
	virtual void canvas_begin();<--- Function in derived class
	virtual void canvas_end();<--- Function in derived class

private:
	// legacy codepath .. to remove after testing
	void _legacy_canvas_render_item(Item *p_ci, RenderItemState &r_ris);

	// high level batch funcs
	void canvas_render_items_implementation(Item *p_item_list, int p_z, const Color &p_modulate, Light *p_light, const Transform2D &p_base_transform);
	void render_joined_item(const BItemJoined &p_bij, RenderItemState &r_ris);
	bool try_join_item(Item *p_ci, RenderItemState &r_ris, bool &r_batch_break);
	void render_batches(Item *p_current_clip, bool &r_reclip, RasterizerStorageGLES2::Material *p_material);

	// low level batch funcs
	void _batch_upload_buffers();
	void _batch_render_generic(const Batch &p_batch, RasterizerStorageGLES2::Material *p_material);
	void _batch_render_lines(const Batch &p_batch, RasterizerStorageGLES2::Material *p_material, bool p_anti_alias);

	// funcs used from rasterizer_canvas_batcher template
	void gl_enable_scissor(int p_x, int p_y, int p_width, int p_height) const;
	void gl_disable_scissor() const;

public:
	void initialize();
	RasterizerCanvasGLES2();
};

#endif // RASTERIZER_CANVAS_GLES2_H