#include "gfx.h"
#include "memory.h"
#include "bootinfo.h"

// byteswap
u32 make_color(color col)
{
	return ((u32) 0)
		| ((u32) col.b << 0)
		| ((u32) col.g << 8)
		| ((u32) col.r << 16)
		| ((u32) col.a << 24);
}

void gfx_set_pixel(u16 x, u16 y, u32 col)
{
	u32 *out = bootinfo->gfx_framebuffer + y * bootinfo->gfx_pitch + x * sizeof col;
	*out = col;
	BARRIER_VAR(out);
}

void gfx_set_area(u16 x, u16 y, u16 w, u16 h, u32 col)
{
	void *cbeg = bootinfo->gfx_framebuffer + y * bootinfo->gfx_pitch + x * sizeof col;
	void *cend = cbeg + h * bootinfo->gfx_pitch;

	for (; cbeg < cend; cbeg += bootinfo->gfx_pitch) {
		u32 *rbeg = cbeg;
		u32 *rend = rbeg + w;

		for (; rbeg < rend; rbeg++)
			*rbeg = col;
	}

	BARRIER_VAR(cbeg);
}

void gfx_draw_img(u16 x, u16 y, u16 w, u16 h, u32 *img)
{
	void *cbeg = bootinfo->gfx_framebuffer + y * bootinfo->gfx_pitch + x * sizeof(color);
	for (u16 yi = 0; yi < h; cbeg += bootinfo->gfx_pitch, yi++)
		lmemcpy(cbeg, img + yi * w, w * sizeof(color));

	BARRIER_VAR(cbeg);
}