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Use bitmap pitch to iterate over pixels

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Kovid Goyal
2018-09-09 09:42:51 +05:30
parent b808a05e5e
commit f7a621f89f
1 changed files with 3 additions and 6 deletions
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9
kitty/freetype.c
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@@ -244,13 +244,10 @@ load_glyph(Face *self, int glyph_index, int load_type) {
// Normalize gray levels to the range [0..255]
bitmap.num_grays = 256;
unsigned int stride = bitmap.pitch < 0 ? -bitmap.pitch : bitmap.pitch;
for (unsigned int i = 0; i < bitmap.rows; ++i) {
for (unsigned int j = 0; j < bitmap.width; ++j)
{
unsigned char *p = &bitmap.buffer[i*bitmap.width+j];
// We only have 2 levels
*p *= 255;
}
// We only have 2 levels
for (unsigned int j = 0; j < bitmap.width; ++j) bitmap.buffer[i * stride + j] *= 255;
}
error = FT_Bitmap_Copy(library, &bitmap, &self->face->glyph->bitmap);
if (error) { set_freetype_error("Failed to copy bitmap, with error:", error); return false; }