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authorsanine <sanine.not@pm.me>2023-02-12 23:53:22 -0600
committersanine <sanine.not@pm.me>2023-02-12 23:53:22 -0600
commitf1fe73d1909a2448a004a88362a1a532d0d4f7c3 (patch)
treeab37ae3837e2f858de2932bcee9f26e69fab3db1 /libs/pixman-0.40.0/test/alphamap.c
parentf567ea1e2798fd3156a416e61f083ea3e6b95719 (diff)
switch to tinyobj and nanovg from assimp and cairo
Diffstat (limited to 'libs/pixman-0.40.0/test/alphamap.c')
-rw-r--r--libs/pixman-0.40.0/test/alphamap.c346
1 files changed, 0 insertions, 346 deletions
diff --git a/libs/pixman-0.40.0/test/alphamap.c b/libs/pixman-0.40.0/test/alphamap.c
deleted file mode 100644
index 150d33e..0000000
--- a/libs/pixman-0.40.0/test/alphamap.c
+++ /dev/null
@@ -1,346 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include "utils.h"
-
-#define WIDTH 48
-#define HEIGHT 48
-
-static const pixman_format_code_t formats[] =
-{
- PIXMAN_a8r8g8b8,
- PIXMAN_a2r10g10b10,
- PIXMAN_a4r4g4b4,
- PIXMAN_a8,
- PIXMAN_rgba_float,
-};
-
-static const pixman_format_code_t alpha_formats[] =
-{
- PIXMAN_null,
- PIXMAN_a8,
- PIXMAN_a2r10g10b10,
- PIXMAN_a4r4g4b4,
- PIXMAN_rgba_float,
-};
-
-static const int origins[] =
-{
- 0, 10, -100
-};
-
-static void
-on_destroy (pixman_image_t *image, void *data)
-{
- uint32_t *bits = pixman_image_get_data (image);
-
- fence_free (bits);
-}
-
-static pixman_image_t *
-make_image (pixman_format_code_t format)
-{
- uint32_t *bits;
- uint8_t bpp = PIXMAN_FORMAT_BPP (format) / 8;
- pixman_image_t *image;
-
- if (format != PIXMAN_rgba_float)
- bits = (uint32_t *)make_random_bytes (WIDTH * HEIGHT * bpp);
- else
- bits = (uint32_t *)make_random_floats (WIDTH * HEIGHT * bpp);
-
- image = pixman_image_create_bits (format, WIDTH, HEIGHT, bits, WIDTH * bpp);
-
- if (image && bits)
- pixman_image_set_destroy_function (image, on_destroy, NULL);
-
- return image;
-}
-
-static float
-get_alpha (pixman_image_t *image, int x, int y, int orig_x, int orig_y)
-{
- uint8_t *bits;
- uint32_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
- {
- return 0.f;
- }
- }
-
- bits = (uint8_t *)image->bits.bits;
-
- if (image->bits.format == PIXMAN_a8)
- {
- r = bits[y * WIDTH + x];
- return r / 255.f;
- }
- else if (image->bits.format == PIXMAN_a2r10g10b10)
- {
- r = ((uint32_t *)bits)[y * WIDTH + x] >> 30;
- return r / 3.f;
- }
- else if (image->bits.format == PIXMAN_a8r8g8b8)
- {
- r = ((uint32_t *)bits)[y * WIDTH + x] >> 24;
- return r / 255.f;
- }
- else if (image->bits.format == PIXMAN_a4r4g4b4)
- {
- r = ((uint16_t *)bits)[y * WIDTH + x] >> 12;
- return r / 15.f;
- }
- else if (image->bits.format == PIXMAN_rgba_float)
- {
- return ((float *)bits)[y * WIDTH * 4 + x * 4 + 3];
- }
- else
- {
- assert (0);
- return 0.f;
- }
-}
-
-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 if (image->bits.format == PIXMAN_rgba_float)
- {
- double tmp = ((float *)bits)[y * WIDTH * 4 + x * 4];
- return tmp * 65535.;
- }
- else
- {
- assert (0);
- }
-
- return r;
-}
-
-static float get_alpha_err(pixman_format_code_t sf, pixman_format_code_t saf,
- pixman_format_code_t df, pixman_format_code_t daf)
-{
- pixman_format_code_t s = saf != PIXMAN_null ? saf : sf;
- pixman_format_code_t d = daf != PIXMAN_null ? daf : df;
-
- /* There are cases where we go through the 8 bit compositing
- * path even with 10bpc and higher formats.
- */
- if (PIXMAN_FORMAT_A(s) == PIXMAN_FORMAT_A(d))
- return 1.f / 255.f;
- else if (PIXMAN_FORMAT_A(s) > PIXMAN_FORMAT_A(d))
- return 1.f / ((1 << PIXMAN_FORMAT_A(d)) - 1);
- else
- return 1.f / ((1 << PIXMAN_FORMAT_A(s)) - 1);
-}
-
-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, *alpha, *orig_alpha;
- pixman_transform_t t1;
- int j, k;
- int n_red_bits;
-
- soff = origins[soff];
- doff = origins[doff];
-
- 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);
-
- 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.
- */
- 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));
-
- pixman_image_set_transform (dst, &t1);
- pixman_image_set_filter (dst, PIXMAN_FILTER_BILINEAR, NULL, 0);
- pixman_image_set_repeat (dst, PIXMAN_REPEAT_REFLECT);
-
- 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)
- {
- float sa, da, oda, refa;
- uint16_t sr, dr, odr, refr;
- float err;
-
- err = get_alpha_err(sf, saf, df, daf);
-
- 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 > 1.f)
- refa = 1.f;
- else
- refa = sa + oda;
-
- if (da - err > refa ||
- da + err < refa)
- {
- printf ("\nWrong alpha value at (%d, %d). Should be %g; got %g. Source was %g, original dest was %g\n",
- 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),
- format_name (saf),
- soff, soff,
- format_name (df),
- format_name (daf),
- 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;
- }
- }
- }
- }
-
- pixman_image_set_alpha_map (src, NULL, 0, 0);
- pixman_image_set_alpha_map (dst, NULL, 0, 0);
- pixman_image_set_alpha_map (orig_dst, NULL, 0, 0);
-
- 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;
-
- prng_srand (0);
-
- 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)
- {
- 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;
- }
- }
- }
- }
- }
- }
-
- return 0;
-}