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

Fix nonuniform downsampling.

Browse Source
master
Jorge Rodriguez ago%!(EXTRA string=11 years)
parent fa69bc8551
commit dbb7480f12
1 changed files with 3 additions and 5 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. 8
      stb_resample.h

8
stb_resample.h
Unescape View File

@ -309,12 +309,10 @@ static void stbr__calculate_coefficients_upsample(stbr__info* stbr_info, int in_
coefficient_group[i] *= filter_scale;
}
static void stbr__calculate_coefficients_downsample(stbr__info* stbr_info, int out_first_texel, int out_last_texel, float out_center_of_in, int n, stbr__contributors* contributor, float* coefficient_group)
static void stbr__calculate_coefficients_downsample(stbr__info* stbr_info, float scale_ratio, int out_first_texel, int out_last_texel, float out_center_of_in, int n, stbr__contributors* contributor, float* coefficient_group)
{
int i;
float scale_ratio = (float)stbr_info->output_w / stbr_info->input_w;
STBR_DEBUG_ASSERT(out_last_texel - out_first_texel <= stbr_info->kernel_texel_width);
STBR_DEBUG_ASSERT(out_first_texel >= 0);
STBR_DEBUG_ASSERT(out_last_texel < stbr_info->total_horizontal_contributors);
@ -365,7 +363,7 @@ static void stbr__calculate_horizontal_filters(stbr__info* stbr_info)
stbr__calculate_sample_range_downsample(n, in_pixels_radius, scale_ratio, &out_first_texel, &out_last_texel, &out_center_of_in);
stbr__calculate_coefficients_downsample(stbr_info, out_first_texel, out_last_texel, out_center_of_in, n, stbr__get_contributor(stbr_info, n), stbr__get_coefficient(stbr_info, n, 0));
stbr__calculate_coefficients_downsample(stbr_info, scale_ratio, out_first_texel, out_last_texel, out_center_of_in, n, stbr__get_contributor(stbr_info, n), stbr__get_coefficient(stbr_info, n, 0));
}
}
}
@ -633,7 +631,7 @@ static void stbr__resample_vertical_downsample(stbr__info* stbr_info, int n, int
int ring_buffer_last_scanline = stbr_info->ring_buffer_last_scanline;
int ring_buffer_length = stbr_info->ring_buffer_length;
stbr__calculate_coefficients_downsample(stbr_info, in_first_scanline, in_last_scanline, in_center_of_out, n, vertical_contributors, vertical_coefficients);
stbr__calculate_coefficients_downsample(stbr_info, (float)stbr_info->output_h / stbr_info->input_h, in_first_scanline, in_last_scanline, in_center_of_out, n, vertical_contributors, vertical_coefficients);
int n0 = vertical_contributors->n0;
int n1 = vertical_contributors->n1;

Write Preview
Loading…
Cancel
Save