#ifndef __VHEX_DISPLAY_SHADER__
# define __VHEX_DISPLAY_SHADER__

#include <vhex/defs/attributes.h>
#include <vhex/defs/types.h>

/* dshader_surface - Describe the surface */
struct dshader_surface {
	void *draw;
	void *frag;
	size_t width;
	size_t height;
	int x1;
	int y1;
	int x2;
	int y2;
};
typedef struct dshader_surface dsurface_t;

/* dshader - display shader definition */
struct dshader_call {
	int (*routine)(
		struct dshader_surface *surface,
		uint32_t *draw_args,
		uint32_t *shader_args
	);
	uint32_t args[8];
};
typedef struct dshader_call dshader_call_t;
typedef struct dshader_call dshader_t;

/* DSHADER_LIST - helper to create a list of shader "on-the-fly" */
#define DSHADER_LIST(shader_list) (dshader_call_t*)&{ shader_list }

/* DSHADER - helper to create a shader object */
#define DSHADER(fct, ...) (dshader_call_t){	\
	.routine = fct,				\
	.args = { __VA_ARGS__ }			\
}

#endif /* __VHEX_DISPLAY_SHADER__ */