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improve image dither

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This commit is contained in:
xianjimli 2020-06-30 17:25:56 +08:00
parent 0805c0c3be
commit c35abd1e05
1 changed files with 1 additions and 1 deletions
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2
tools/image_dither/image_dither.c
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@ -2052,7 +2052,7 @@ static void image_dither_data_8888_to_565(uint8_t* src_data, uint8_t* dst_data,
line_err[-1].g = 0;
line_err[-1].r = 0;
for (x = 0; x < w; x++) {
if (src[3] > 0) {
if (src_bpp == 3 || (src_bpp == 4 && src[3] > 0)) {
cB = src[0] + (((err.b << 1) + line_err[x].b + err_1.b) >> 2);
cG = src[1] + (((err.g << 1) + line_err[x].g + err_1.g) >> 2);
cR = src[2] + (((err.r << 1) + line_err[x].r + err_1.r) >> 2);