return r;
}
+static uint16_t
+get_red (pixman_image_t *image, int x, int y, int orig_x, int orig_y)
+{
+ uint8_t *bits;
+ uint16_t r;
+
+ bits = (uint8_t *)image->bits.bits;
+
+ if (image->bits.format == PIXMAN_a8)
+ {
+ r = 0x00;
+ }
+ else if (image->bits.format == PIXMAN_a2r10g10b10)
+ {
+ r = ((uint32_t *)bits)[y * WIDTH + x] >> 14;
+ r &= 0xffc0;
+ r |= (r >> 10);
+ }
+ else if (image->bits.format == PIXMAN_a8r8g8b8)
+ {
+ r = ((uint32_t *)bits)[y * WIDTH + x] >> 16;
+ r &= 0xff;
+ r |= r << 8;
+ }
+ else if (image->bits.format == PIXMAN_a4r4g4b4)
+ {
+ r = ((uint16_t *)bits)[y * WIDTH + x] >> 8;
+ r &= 0xf;
+ r |= r << 4;
+ r |= r << 8;
+ }
+ else
+ {
+ assert (0);
+ }
+
+ return r;
+}
+
static int
run_test (int s, int d, int sa, int da, int soff, int doff)
{
pixman_image_t *src, *dst, *orig_dst;
pixman_transform_t t1;
int j, k;
- int n_alpha_bits;
+ int n_alpha_bits, n_red_bits;
soff = origins[soff];
doff = origins[doff];
if (daf != PIXMAN_null)
n_alpha_bits = PIXMAN_FORMAT_A (daf);
+ n_red_bits = PIXMAN_FORMAT_R (df);
src = create_image (sf, saf, soff, soff);
orig_dst = create_image (df, daf, doff, doff);
{
for (k = MAX (doff, 0); k < MIN (WIDTH, WIDTH + doff); ++k)
{
- uint8_t sa, da, oda, ref;
+ uint8_t sa, da, oda, refa;
+ uint16_t sr, dr, odr, refr;
sa = get_alpha (src, k, j, soff, soff);
da = get_alpha (dst, k, j, doff, doff);
oda = get_alpha (orig_dst, k, j, doff, doff);
if (sa + oda > 255)
- ref = 255;
+ refa = 255;
else
- ref = sa + oda;
+ refa = sa + oda;
- if (da >> (8 - n_alpha_bits) != ref >> (8 - n_alpha_bits))
+ if (da >> (8 - n_alpha_bits) != refa >> (8 - n_alpha_bits))
{
printf ("\nWrong alpha value at (%d, %d). Should be 0x%x; got 0x%x. Source was 0x%x, original dest was 0x%x\n",
- k, j, ref, da, sa, oda);
+ k, j, refa, da, sa, oda);
printf ("src: %s, alpha: %s, origin %d %d\ndst: %s, alpha: %s, origin: %d %d\n\n",
format_name (sf),
doff, doff);
return 1;
}
+
+ /* There are cases where we go through the 8 bit compositing
+ * path even with 10bpc formats. This results in incorrect
+ * results here, so only do the red check for narrow formats
+ */
+ if (n_red_bits <= 8)
+ {
+ sr = get_red (src, k, j, soff, soff);
+ dr = get_red (dst, k, j, doff, doff);
+ odr = get_red (orig_dst, k, j, doff, doff);
+
+ if (sr + odr > 0xffff)
+ refr = 0xffff;
+ else
+ refr = sr + odr;
+
+ if (abs ((dr >> (16 - n_red_bits)) - (refr >> (16 - n_red_bits))) > 1)
+ {
+ printf ("%d red bits\n", n_red_bits);
+ printf ("\nWrong red value at (%d, %d). Should be 0x%x; got 0x%x. Source was 0x%x, original dest was 0x%x\n",
+ k, j, refr, dr, sr, odr);
+
+ printf ("src: %s, alpha: %s, origin %d %d\ndst: %s, alpha: %s, origin: %d %d\n\n",
+ format_name (sf),
+ format_name (saf),
+ soff, soff,
+ format_name (df),
+ format_name (daf),
+ doff, doff);
+ return 1;
+ }
+ }
}
}