/*************************************************************************/
/*  rasterizer_canvas_gles3.h                                            */
/*************************************************************************/
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#ifndef RASTERIZER_CANVAS_GLES3_H
#define RASTERIZER_CANVAS_GLES3_H

#include "drivers/gles_common/rasterizer_canvas_batcher.h"
#include "rasterizer_canvas_base_gles3.h"

class RasterizerCanvasGLES3 : public RasterizerCanvasBaseGLES3, public RasterizerCanvasBatcher<RasterizerCanvasGLES3, RasterizerStorageGLES3> {
	friend class RasterizerCanvasBatcher<RasterizerCanvasGLES3, RasterizerStorageGLES3>;

private:
	struct BatchGLData {
		// for batching
		GLuint batch_vertex_array[5];
	} batch_gl_data;

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();
	virtual void canvas_end();

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, RasterizerStorageGLES3::Material *p_material);

	// low level batch funcs
	void _batch_upload_buffers();
	void _batch_render_prepare();
	void _batch_render_generic(const Batch &p_batch, RasterizerStorageGLES3::Material *p_material);
	void _batch_render_lines(const Batch &p_batch, RasterizerStorageGLES3::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();
	RasterizerCanvasGLES3();
};

#endif // RASTERIZER_CANVAS_GLES3_H