- // since pixel32 is the largest possible pixel size, we can share the array
- int r, g, b;
- int x,y;
- pixel16 *p = (pixel16*) data;
- switch (im->bits_per_pixel) {
- case 32:
- if ((render_red_offset != default_red_shift) ||
- (render_blue_offset != default_blue_shift) ||
- (render_green_offset != default_green_shift)) {
- for (y = 0; y < im->height; y++) {
- for (x = 0; x < im->width; x++) {
- r = (data[x] >> default_red_shift) & 0xFF;
- g = (data[x] >> default_green_shift) & 0xFF;
- b = (data[x] >> default_blue_shift) & 0xFF;
- data[x] = (r << render_red_offset) + (g << render_green_offset) +
- (b << render_blue_offset);
+ int r, g, b;
+ int x,y;
+ pixel32 *p32 = (pixel32 *) im->data;
+ pixel16 *p16 = (pixel16 *) im->data;
+ unsigned char *p8 = (unsigned char *)im->data;
+ switch (im->bits_per_pixel) {
+ case 32:
+ if ((render_red_offset != default_red_shift) ||
+ (render_blue_offset != default_blue_shift) ||
+ (render_green_offset != default_green_shift)) {
+ for (y = 0; y < im->height; y++) {
+ for (x = 0; x < im->width; x++) {
+ r = (data[x] >> default_red_shift) & 0xFF;
+ g = (data[x] >> default_green_shift) & 0xFF;
+ b = (data[x] >> default_blue_shift) & 0xFF;
+ p32[x] = (r << render_red_offset)
+ + (g << render_green_offset)
+ + (b << render_blue_offset);
+ }
+ data += im->width;
+ p32 += im->width;
+ }
+ } else im->data = (char*) data;
+ break;
+ case 16:
+ for (y = 0; y < im->height; y++) {
+ for (x = 0; x < im->width; x++) {
+ r = (data[x] >> default_red_shift) & 0xFF;
+ r = r >> render_red_shift;
+ g = (data[x] >> default_green_shift) & 0xFF;
+ g = g >> render_green_shift;
+ b = (data[x] >> default_blue_shift) & 0xFF;
+ b = b >> render_blue_shift;
+ p16[x] = (r << render_red_offset)
+ + (g << render_green_offset)
+ + (b << render_blue_offset);
+ }
+ data += im->width;
+ p16 += im->bytes_per_line/2;
+ }
+ break;
+ case 8:
+ g_assert(render_visual->class != TrueColor);
+ for (y = 0; y < im->height; y++) {
+ for (x = 0; x < im->width; x++) {
+ p8[x] = pickColor(data[x] >> default_red_shift,
+ data[x] >> default_green_shift,
+ data[x] >> default_blue_shift)->pixel;