[Pixman] [PATCH 2/5] Update and extend the alphamap test
Søren Sandmann
sandmann at daimi.au.dk
Tue Sep 14 06:18:19 PDT 2010
From: Søren Sandmann Pedersen <ssp at redhat.com>
- Test many more combinations of formats
- Test destination alpha maps
- Test various different alpha origins
Also add a transformation to the destination, but comment it out
because it is actually broken at the moment (and pretty difficult to
fix).
---
test/Makefile.am | 2 +-
test/alphamap.c | 243 ++++++++++++++++++++++++++++++++++++++++++++++++------
2 files changed, 218 insertions(+), 27 deletions(-)
diff --git a/test/Makefile.am b/test/Makefile.am
index 3d98e17..f3b2b58 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -13,9 +13,9 @@ TESTPROGRAMS = \
window-test \
gradient-crash-test \
trap-crasher \
- alphamap \
alpha-loop \
scaling-crash-test \
+ alphamap \
blitters-test \
scaling-test \
composite
diff --git a/test/alphamap.c b/test/alphamap.c
index e6a25ef..09de387 100644
--- a/test/alphamap.c
+++ b/test/alphamap.c
@@ -2,47 +2,238 @@
#include <stdlib.h>
#include "utils.h"
-#define WIDTH 400
-#define HEIGHT 200
+#define WIDTH 100
+#define HEIGHT 100
-int
-main (int argc, char **argv)
+static const pixman_format_code_t formats[] =
+{
+ PIXMAN_a8r8g8b8,
+ PIXMAN_a2r10g10b10,
+ PIXMAN_a4r4g4b4,
+ PIXMAN_a8
+};
+
+static const pixman_format_code_t alpha_formats[] =
+{
+ PIXMAN_null,
+ PIXMAN_a8,
+ PIXMAN_a2r10g10b10,
+ PIXMAN_a4r4g4b4
+};
+
+static const int origins[] =
{
- uint8_t *alpha = make_random_bytes (WIDTH * HEIGHT);
- uint32_t *src = (uint32_t *)make_random_bytes (WIDTH * HEIGHT * 4);
- uint32_t *dest = (uint32_t *)make_random_bytes (WIDTH * HEIGHT * 4);
- int i;
+ 0, 10, -100
+};
- pixman_image_t *a = pixman_image_create_bits (PIXMAN_a8, WIDTH, HEIGHT, (uint32_t *)alpha, WIDTH);
- pixman_image_t *d = pixman_image_create_bits (PIXMAN_a8r8g8b8, WIDTH, HEIGHT, dest, WIDTH * 4);
+static const char *
+format_name (pixman_format_code_t format)
+{
+ if (format == PIXMAN_a8)
+ return "a8";
+ else if (format == PIXMAN_a2r10g10b10)
+ return "a2r10g10b10";
+ else if (format == PIXMAN_a8r8g8b8)
+ return "a8r8g8b8";
+ else if (format == PIXMAN_a4r4g4b4)
+ return "a4r4g4b4";
+ else if (format == PIXMAN_null)
+ return "none";
+ else
+ assert (0);
- for (i = 0; i < 2; ++i)
+ return "<unknown - bug in alphamap.c>";
+}
+
+static pixman_image_t *
+make_image (pixman_format_code_t format)
+{
+ uint32_t *bits;
+ uint8_t bpp = PIXMAN_FORMAT_BPP (format) / 8;
+
+ bits = (uint32_t *)make_random_bytes (WIDTH * HEIGHT * bpp);
+
+ return pixman_image_create_bits (format, WIDTH, HEIGHT, bits, WIDTH * bpp);
+}
+
+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_format_code_t sformat = (i == 0)? PIXMAN_a8r8g8b8 : PIXMAN_a2r10g10b10;
- pixman_image_t *s = pixman_image_create_bits (sformat, WIDTH, HEIGHT, src, WIDTH * 4);
- int j, k;
+ pixman_image_t *alpha = make_image (alpha_format);
- pixman_image_set_alpha_map (s, a, 0, 0);
+ pixman_image_set_alpha_map (image, alpha,
+ alpha_origin_x, alpha_origin_y);
+ }
- pixman_image_composite (PIXMAN_OP_SRC, s, NULL, d, 0, 0, 0, 0, 0, 0, WIDTH, HEIGHT);
+ return image;
+}
- for (j = 0; j < HEIGHT; ++j)
+static uint8_t
+get_alpha (pixman_image_t *image, int x, int y, int orig_x, int orig_y)
+{
+ uint8_t *bits;
+ uint8_t r;
+
+ if (image->common.alpha_map)
+ {
+ if (x - orig_x >= 0 && x - orig_x < WIDTH &&
+ y - orig_y >= 0 && y - orig_y < HEIGHT)
+ {
+ image = (pixman_image_t *)image->common.alpha_map;
+
+ x -= orig_x;
+ y -= orig_y;
+ }
+ else
{
- for (k = 0; k < WIDTH; ++k)
+ return 0;
+ }
+ }
+
+ bits = (uint8_t *)image->bits.bits;
+
+ if (image->bits.format == PIXMAN_a8)
+ {
+ r = bits[y * WIDTH + x];
+ }
+ else if (image->bits.format == PIXMAN_a2r10g10b10)
+ {
+ r = ((uint32_t *)bits)[y * WIDTH + x] >> 30;
+ r |= r << 2;
+ r |= r << 4;
+ }
+ else if (image->bits.format == PIXMAN_a8r8g8b8)
+ {
+ r = ((uint32_t *)bits)[y * WIDTH + x] >> 24;
+ }
+ else if (image->bits.format == PIXMAN_a4r4g4b4)
+ {
+ r = ((uint16_t *)bits)[y * WIDTH + x] >> 12;
+ r |= r << 4;
+ }
+ else
+ {
+ assert (0);
+ }
+
+ return r;
+}
+
+#define ARRAY_LENGTH(A) ((int) (sizeof (A) / sizeof ((A) [0])))
+
+static int
+run_test (int s, int d, int sa, int da, int soff, int doff)
+{
+ pixman_format_code_t sf = formats[s];
+ 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_transform_t t1;
+ int j, k;
+ int n_alpha_bits;
+
+ soff = origins[soff];
+ doff = origins[doff];
+
+ n_alpha_bits = PIXMAN_FORMAT_A (df);
+ if (daf != PIXMAN_null)
+ n_alpha_bits = PIXMAN_FORMAT_A (daf);
+
+
+ src = create_image (sf, saf, soff, soff);
+ orig_dst = create_image (df, daf, doff, doff);
+ dst = create_image (df, daf, doff, doff);
+
+ /* Transformations on destinations should be ignored, so just set some
+ * random one.
+ */
+ pixman_transform_init_identity (&t1);
+ pixman_transform_scale (&t1, NULL, pixman_int_to_fixed (100), pixman_int_to_fixed (11));
+ pixman_transform_rotate (&t1, NULL, pixman_double_to_fixed (0.5), pixman_double_to_fixed (0.11));
+ pixman_transform_translate (&t1, NULL, pixman_int_to_fixed (11), pixman_int_to_fixed (17));
+
+#if 0
+ /* Unfortunately, this is actually broken at the moment, so we can't
+ * actually turn it on
+ */
+ pixman_image_set_transform (dst, &t1);
+#endif
+
+ 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);
+
+ for (j = MAX (doff, 0); j < MIN (HEIGHT, HEIGHT + doff); ++j)
+ {
+ for (k = MAX (doff, 0); k < MIN (WIDTH, WIDTH + doff); ++k)
+ {
+ uint8_t sa, da, oda, ref;
+
+ 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;
+ else
+ ref = sa + oda;
+
+ if (da >> (8 - n_alpha_bits) != ref >> (8 - n_alpha_bits))
{
- uint8_t ap = ((uint8_t *)alpha)[j * WIDTH + k];
- uint32_t dap = (dest[j * WIDTH + k] >> 24);
- uint32_t sap = (src[j * WIDTH + k] >> 24);
+ 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);
+
+ 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;
+ }
+ }
+ }
+
+ pixman_image_unref (src);
+ pixman_image_unref (dst);
+ pixman_image_unref (orig_dst);
+
+ return 0;
+}
+
+int
+main (int argc, char **argv)
+{
+ int i, j, a, b, x, y;
- if (ap != dap)
+ for (i = 0; i < ARRAY_LENGTH (formats); ++i)
+ {
+ for (j = 0; j < ARRAY_LENGTH (formats); ++j)
+ {
+ for (a = 0; a < ARRAY_LENGTH (alpha_formats); ++a)
+ {
+ for (b = 0; b < ARRAY_LENGTH (alpha_formats); ++b)
{
- printf ("Wrong alpha value at (%d, %d). Should be %d; got %d (src was %d)\n", k, j, ap, dap, sap);
- return 1;
+ for (x = 0; x < ARRAY_LENGTH (origins); ++x)
+ {
+ for (y = 0; y < ARRAY_LENGTH (origins); ++y)
+ {
+ if (run_test (i, j, a, b, x, y) != 0)
+ return 1;
+ }
+ }
}
}
}
-
- pixman_image_unref (s);
}
return 0;
--
1.7.1.1
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