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Same deal with height.

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This commit is contained in:
Jorge Rodriguez 2014-07-29 23:02:56 -07:00
parent ebe0473d8b
commit 043fa28c11
2 changed files with 16 additions and 2 deletions
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2
stb_resample.h
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@ -1147,7 +1147,7 @@ static void stbr__buffer_loop_downsample(stbr__info* stbr_info)
{ {
int y; int y;
float scale_ratio = (float)stbr_info->output_h / stbr_info->input_h; float scale_ratio = (float)stbr_info->output_h / stbr_info->input_h;
float in_pixels_radius = stbr__filter_info_table[stbr_info->filter].support; float in_pixels_radius = stbr__filter_info_table[stbr_info->filter].support / scale_ratio;
int max_y = stbr_info->input_h + stbr__get_filter_texel_margin(stbr_info->filter, stbr_info->input_h, stbr_info->output_h); int max_y = stbr_info->input_h + stbr__get_filter_texel_margin(stbr_info->filter, stbr_info->input_h, stbr_info->output_h);
STBR_DEBUG_ASSERT(!stbr__use_height_upsampling(stbr_info)); STBR_DEBUG_ASSERT(!stbr__use_height_upsampling(stbr_info));

16
tests/resample_test.cpp
View File

@ -137,12 +137,26 @@ void test_suite()
resize_image("barbara.png", (float)i / 100, 1, STBR_FILTER_CATMULLROM, STBR_EDGE_CLAMP, outname); resize_image("barbara.png", (float)i / 100, 1, STBR_FILTER_CATMULLROM, STBR_EDGE_CLAMP, outname);
} }
for (int i = 110; i < 1000; i += 10) for (int i = 110; i < 500; i += 10)
{ {
char outname[200]; char outname[200];
sprintf(outname, "test-output/barbara-width-%d.jpg", i); sprintf(outname, "test-output/barbara-width-%d.jpg", i);
resize_image("barbara.png", (float)i / 100, 1, STBR_FILTER_CATMULLROM, STBR_EDGE_CLAMP, outname); resize_image("barbara.png", (float)i / 100, 1, STBR_FILTER_CATMULLROM, STBR_EDGE_CLAMP, outname);
} }
for (int i = 10; i < 100; i++)
{
char outname[200];
sprintf(outname, "test-output/barbara-height-%d.jpg", i);
resize_image("barbara.png", 1, (float)i / 100, STBR_FILTER_CATMULLROM, STBR_EDGE_CLAMP, outname);
}
for (int i = 110; i < 500; i += 10)
{
char outname[200];
sprintf(outname, "test-output/barbara-height-%d.jpg", i);
resize_image("barbara.png", 1, (float)i / 100, STBR_FILTER_CATMULLROM, STBR_EDGE_CLAMP, outname);
}
} }