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Merge branch 'img_transform' of https://github.com/littlevgl/lvgl into img_transform

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This commit is contained in:
Gabor Kiss-Vamosi 2019-11-08 09:21:05 +01:00
commit 66a67ff24a
1 changed files with 11 additions and 1 deletions
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12
src/lv_draw/lv_img_buf.c
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@ -415,7 +415,7 @@ void lv_img_buf_rotate_init(lv_img_rotate_dsc_t * dsc, int16_t angle, const void
dsc->chroma_keyed = lv_img_cf_is_chroma_keyed(cf) ? 1 : 0;
dsc->has_alpha = lv_img_cf_has_alpha(cf) ? 1 : 0;
if(cf == LV_IMG_CF_TRUE_COLOR || cf == LV_IMG_CF_TRUE_COLOR_ALPHA || cf == LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED) {
dsc->native_color = 0;
dsc->native_color = 1;
}
dsc->img_dsc.data = src;
@ -605,6 +605,16 @@ static inline bool transform_anti_alias(lv_img_rotate_dsc_t * dsc)
a0 = (a00 * xr + (a10 * (255 - xr))) >> 8;
a1 = (a01 * xr + (a11 * (255 - xr))) >> 8;
dsc->res_opa = (a0 * yr + (a1 * (255 - yr))) >> 8;
if(a0 <= LV_OPA_MIN && a1 <= LV_OPA_MIN) return false;
if(a0 <= LV_OPA_MIN) yr = LV_OPA_TRANSP;
if(a1 <= LV_OPA_MIN) yr = LV_OPA_COVER;
if(a00 <= LV_OPA_MIN) xr0 = LV_OPA_TRANSP;
if(a10 <= LV_OPA_MIN) xr0 = LV_OPA_COVER;
if(a01 <= LV_OPA_MIN) xr1 = LV_OPA_TRANSP;
if(a11 <= LV_OPA_MIN) xr1 = LV_OPA_COVER;
} else {
xr0 = xr;
xr1 = xr;