int
SDL_DrawPoint(SDL_Surface * dst, int x, int y, Uint32 color)
{
if (!dst) {
return SDL_SetError("Passed NULL destination surface");
}
/* This function doesn't work on surfaces < 8 bpp */
if (dst->format->BitsPerPixel < 8) {
return SDL_SetError("SDL_DrawPoint(): Unsupported surface format");
}
/* Perform clipping */
if (x < dst->clip_rect.x || y < dst->clip_rect.y ||
x >= (dst->clip_rect.x + dst->clip_rect.w) ||
y >= (dst->clip_rect.y + dst->clip_rect.h)) {
return 0;
}
switch (dst->format->BytesPerPixel) {
case 1:
DRAW_FASTSETPIXELXY1(x, y);
break;
case 2:
DRAW_FASTSETPIXELXY2(x, y);
break;
case 3:
return SDL_Unsupported();
case 4:
DRAW_FASTSETPIXELXY4(x, y);
break;
}
return 0;
}
int
SDL_DrawPoints(SDL_Surface * dst, const SDL_Point * points, int count,
Uint32 color)
{
int minx, miny;
int maxx, maxy;
int i;
int x, y;
if (!dst) {
SDL_SetError("Passed NULL destination surface");
return -1;
}
/* This function doesn't work on surfaces < 8 bpp */
if (dst->format->BitsPerPixel < 8) {
SDL_SetError("SDL_DrawPoints(): Unsupported surface format");
return -1;
}
minx = dst->clip_rect.x;
maxx = dst->clip_rect.x + dst->clip_rect.w - 1;
miny = dst->clip_rect.y;
maxy = dst->clip_rect.y + dst->clip_rect.h - 1;
for (i = 0; i < count; ++i) {
x = points[i].x;
y = points[i].y;
if (x < minx || x > maxx || y < miny || y > maxy) {
continue;
}
switch (dst->format->BytesPerPixel) {
case 1:
DRAW_FASTSETPIXELXY1(x, y);
break;
case 2:
DRAW_FASTSETPIXELXY2(x, y);
break;
case 3:
SDL_Unsupported();
return -1;
case 4:
DRAW_FASTSETPIXELXY4(x, y);
break;
}
}
return 0;
}