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Diffstat (limited to 'pixman/test/alphamap.c')
-rw-r--r--pixman/test/alphamap.c144
1 files changed, 111 insertions, 33 deletions
diff --git a/pixman/test/alphamap.c b/pixman/test/alphamap.c
index 24a350ed7..0c5757ea3 100644
--- a/pixman/test/alphamap.c
+++ b/pixman/test/alphamap.c
@@ -2,8 +2,8 @@
#include <stdlib.h>
#include "utils.h"
-#define WIDTH 100
-#define HEIGHT 100
+#define WIDTH 48
+#define HEIGHT 48
static const pixman_format_code_t formats[] =
{
@@ -70,24 +70,6 @@ make_image (pixman_format_code_t format)
return image;
}
-static pixman_image_t *
-create_image (pixman_format_code_t format, pixman_format_code_t alpha_format,
- int alpha_origin_x, int alpha_origin_y)
-{
- pixman_image_t *image = make_image (format);
-
- if (alpha_format != PIXMAN_null)
- {
- pixman_image_t *alpha = make_image (alpha_format);
-
- pixman_image_set_alpha_map (image, alpha,
- alpha_origin_x, alpha_origin_y);
- pixman_image_unref (alpha);
- }
-
- return image;
-}
-
static uint8_t
get_alpha (pixman_image_t *image, int x, int y, int orig_x, int orig_y)
{
@@ -139,6 +121,45 @@ get_alpha (pixman_image_t *image, int x, int y, int orig_x, int orig_y)
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)
{
@@ -146,10 +167,10 @@ run_test (int s, int d, int sa, int da, int soff, int doff)
pixman_format_code_t df = formats[d];
pixman_format_code_t saf = alpha_formats[sa];
pixman_format_code_t daf = alpha_formats[da];
- pixman_image_t *src, *dst, *orig_dst;
+ pixman_image_t *src, *dst, *orig_dst, *alpha, *orig_alpha;
pixman_transform_t t1;
int j, k;
- int n_alpha_bits;
+ int n_alpha_bits, n_red_bits;
soff = origins[soff];
doff = origins[doff];
@@ -158,10 +179,37 @@ run_test (int s, int d, int sa, int da, int soff, int doff)
if (daf != PIXMAN_null)
n_alpha_bits = PIXMAN_FORMAT_A (daf);
+ n_red_bits = PIXMAN_FORMAT_R (df);
+
+ /* Source */
+ src = make_image (sf);
+ if (saf != PIXMAN_null)
+ {
+ alpha = make_image (saf);
+ pixman_image_set_alpha_map (src, alpha, soff, soff);
+ pixman_image_unref (alpha);
+ }
+
+ /* Destination */
+ orig_dst = make_image (df);
+ dst = make_image (df);
+ pixman_image_composite (PIXMAN_OP_SRC, orig_dst, NULL, dst,
+ 0, 0, 0, 0, 0, 0, WIDTH, HEIGHT);
+
+ if (daf != PIXMAN_null)
+ {
+ orig_alpha = make_image (daf);
+ alpha = make_image (daf);
+
+ pixman_image_composite (PIXMAN_OP_SRC, orig_alpha, NULL, alpha,
+ 0, 0, 0, 0, 0, 0, WIDTH, HEIGHT);
- src = create_image (sf, saf, soff, soff);
- orig_dst = create_image (df, daf, doff, doff);
- dst = create_image (df, daf, doff, doff);
+ pixman_image_set_alpha_map (orig_dst, orig_alpha, doff, doff);
+ pixman_image_set_alpha_map (dst, alpha, doff, doff);
+
+ pixman_image_unref (orig_alpha);
+ pixman_image_unref (alpha);
+ }
/* Transformations, repeats and filters on destinations should be ignored,
* so just set some random ones.
@@ -175,9 +223,6 @@ run_test (int s, int d, int sa, int da, int soff, int doff)
pixman_image_set_filter (dst, PIXMAN_FILTER_BILINEAR, NULL, 0);
pixman_image_set_repeat (dst, PIXMAN_REPEAT_REFLECT);
- pixman_image_composite (PIXMAN_OP_SRC, orig_dst, NULL, dst,
- 0, 0, 0, 0, 0, 0, WIDTH, HEIGHT);
-
pixman_image_composite (PIXMAN_OP_ADD, src, NULL, dst,
0, 0, 0, 0, 0, 0, WIDTH, HEIGHT);
@@ -185,21 +230,22 @@ run_test (int s, int d, int sa, int da, int soff, int 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),
@@ -210,6 +256,38 @@ run_test (int s, int d, int sa, int da, int soff, int doff)
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;
+ }
+ }
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 22:01:26 +0000