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#ifndef _DRAW_H
#define _DRAW_H
#include <stdint.h>
#include "fb.h"
/* helper for scaling rgb colors and packing them into an pixel */
static inline uint32_t makergb(uint32_t r, uint32_t g, uint32_t b, float intensity)
{
r = (((float)intensity) * r);
g = (((float)intensity) * g);
b = (((float)intensity) * b);
return (((r & 0xff) << 16) | ((g & 0xff) << 8) | (b & 0xff));
}
static inline int draw_pixel(fb_fragment_t *f, int x, int y, uint32_t pixel)
{
uint32_t *pixels = f->buf;
if (y < 0 || y >= f->height || x < 0 || x >= f->width) {
return 0;
}
/* FIXME this assumes stride is aligned to 4 */
pixels[(y * f->width + (f->stride >> 2)) + x] = pixel;
return 1;
}
#endif
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