anulax
/
stb
1
0
Fork 0
Code Issues Pull Requests Packages project_board Releases Wiki Activity

Tests to ensure images of a solid color stay the same solid color after resampling.

Browse Source
master
Jorge Rodriguez ago%!(EXTRA string=11 years)
parent e6c47ec657
commit 118f28557e
1 changed files with 40 additions and 0 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 40
      tests/resample_test.cpp

40
tests/resample_test.cpp
Unescape View File

@ -566,6 +566,22 @@ void verify_box(void)
STBIR_ASSERT(output11[j][i] == ((t+32)>>6));
}
void verify_filter_normalized(stbir_filter filter, unsigned char* output, int output_size)
{
int value = 64;
int i, j;
for (j = 0; j < 8; ++j)
for (i = 0; i < 8; ++i)
image88[j][i] = value;
stbir_resize_uint8_generic(image88[0], 8, 8, 0, output, output_size, output_size, 0, 1, -1, 0, STBIR_EDGE_CLAMP, filter, STBIR_COLORSPACE_LINEAR, NULL);
for (j = 0; j < output_size; ++j)
for (i = 0; i < output_size; ++i)
STBIR_ASSERT(value == output[j*output_size + i]);
}
void test_filters(void)
{
int i,j;
@ -588,6 +604,30 @@ void test_filters(void)
for (i=0; i < 8; ++i)
image88[j][i] = i&2 ? 255 : 0;
verify_box();
verify_filter_normalized(STBIR_FILTER_BOX, &output88[0][0], 8);
verify_filter_normalized(STBIR_FILTER_BILINEAR, &output88[0][0], 8);
verify_filter_normalized(STBIR_FILTER_BICUBIC, &output88[0][0], 8);
verify_filter_normalized(STBIR_FILTER_CATMULLROM, &output88[0][0], 8);
verify_filter_normalized(STBIR_FILTER_MITCHELL, &output88[0][0], 8);
verify_filter_normalized(STBIR_FILTER_BOX, &output44[0][0], 4);
verify_filter_normalized(STBIR_FILTER_BILINEAR, &output44[0][0], 4);
verify_filter_normalized(STBIR_FILTER_BICUBIC, &output44[0][0], 4);
verify_filter_normalized(STBIR_FILTER_CATMULLROM, &output44[0][0], 4);
verify_filter_normalized(STBIR_FILTER_MITCHELL, &output44[0][0], 4);
verify_filter_normalized(STBIR_FILTER_BOX, &output22[0][0], 2);
verify_filter_normalized(STBIR_FILTER_BILINEAR, &output22[0][0], 2);
verify_filter_normalized(STBIR_FILTER_BICUBIC, &output22[0][0], 2);
verify_filter_normalized(STBIR_FILTER_CATMULLROM, &output22[0][0], 2);
verify_filter_normalized(STBIR_FILTER_MITCHELL, &output22[0][0], 2);
verify_filter_normalized(STBIR_FILTER_BOX, &output11[0][0], 1);
verify_filter_normalized(STBIR_FILTER_BILINEAR, &output11[0][0], 1);
verify_filter_normalized(STBIR_FILTER_BICUBIC, &output11[0][0], 1);
verify_filter_normalized(STBIR_FILTER_CATMULLROM, &output11[0][0], 1);
verify_filter_normalized(STBIR_FILTER_MITCHELL, &output11[0][0], 1);
}

Write Preview
Loading…
Cancel
Save