diff options
Diffstat (limited to 'test/scaling-test.c')
| -rw-r--r-- | test/scaling-test.c | 59 |
1 files changed, 48 insertions, 11 deletions
diff --git a/test/scaling-test.c b/test/scaling-test.c index 0ece611..4c22011 100644 --- a/test/scaling-test.c +++ b/test/scaling-test.c @@ -45,6 +45,35 @@ get_format (int bpp) } } +/* sets up "some kind of separable convolution" using prng values */ +void setup_separable_convulution(pixman_image_t* image, pixman_fixed_t scale_x, pixman_fixed_t scale_y, int verbose) { + int num_filters = PIXMAN_KERNEL_LANCZOS3_STRETCHED + 1; + int max_subsample_bits = 4; + struct Params { + pixman_fixed_t scale_x, scale_y; + pixman_kernel_t reconstruct_x, reconstruct_y; + pixman_kernel_t sample_x, sample_y; + int subsample_bits_x, subsample_bits_y; + } params = { + scale_x, scale_y, + prng_rand_n(num_filters), prng_rand_n(num_filters), + prng_rand_n(num_filters), prng_rand_n(num_filters), + prng_rand_n(max_subsample_bits + 1), prng_rand_n(max_subsample_bits + 1), + }; + int num_params; + pixman_fixed_t *filter; + if(verbose) { + printf("separable convolution kernels=%d %d %d %d subsample_bits=%d %d\n", params.reconstruct_x, params.reconstruct_y, params.sample_x, params.sample_y, params.subsample_bits_x, params.subsample_bits_y); + } + filter = pixman_filter_create_separable_convolution(&num_params, + params.scale_x, params.scale_y, + params.reconstruct_x, params.reconstruct_y, + params.sample_x, params.sample_y, + params.subsample_bits_x, params.subsample_bits_y); + pixman_image_set_filter(image, PIXMAN_FILTER_SEPARABLE_CONVOLUTION, filter, num_params); + free(filter); +} + uint32_t test_composite (int testnum, int verbose) @@ -246,15 +275,23 @@ test_composite (int testnum, } pixman_image_set_repeat (src_img, repeat); - if (prng_rand_n (2)) - pixman_image_set_filter (src_img, PIXMAN_FILTER_NEAREST, NULL, 0); - else - pixman_image_set_filter (src_img, PIXMAN_FILTER_BILINEAR, NULL, 0); + switch (prng_rand_n (5)) { + case 0: pixman_image_set_filter(src_img, PIXMAN_FILTER_BILINEAR, NULL, 0); break; + case 1: pixman_image_set_filter(src_img, PIXMAN_FILTER_NEAREST, NULL, 0); break; + default: + /* this gets a larger range as samples distribute over quite a few possible settings */ + setup_separable_convulution(src_img, scale_x, scale_y, verbose); + break; + } - if (prng_rand_n (2)) - pixman_image_set_filter (mask_img, PIXMAN_FILTER_NEAREST, NULL, 0); - else - pixman_image_set_filter (mask_img, PIXMAN_FILTER_BILINEAR, NULL, 0); + switch (prng_rand_n (5)) { + case 0: pixman_image_set_filter(mask_img, PIXMAN_FILTER_BILINEAR, NULL, 0); break; + case 1: pixman_image_set_filter(mask_img, PIXMAN_FILTER_NEAREST, NULL, 0); break; + default: + /* this gets a larger range as samples distribute over quite a few possible settings */ + setup_separable_convulution(mask_img, scale_x, scale_y, verbose); + break; + } if (prng_rand_n (8) == 0) { @@ -380,7 +417,7 @@ test_composite (int testnum, src_x, src_y, mask_x, mask_y, dst_x, dst_y, w, h); crc32 = compute_crc32_for_image (0, dst_img); - + if (verbose) print_image (dst_img); @@ -407,9 +444,9 @@ test_composite (int testnum, } #if BILINEAR_INTERPOLATION_BITS == 7 -#define CHECKSUM 0x92E0F068 +#define CHECKSUM 0xD3589272 #elif BILINEAR_INTERPOLATION_BITS == 4 -#define CHECKSUM 0x8EFFA1E5 +#define CHECKSUM 0x0FD4B248 #else #define CHECKSUM 0x00000000 #endif |