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docs(images): fix notes about breaking change inf v8.2

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Indexed images are not chroma keyed. Use the alpha chaneel instead.
Realted to: https://forum.lvgl.io/t/8-2-0-image-drawing-renders-actual-color-defined-for-transparency-in-lv-img-cf-indexed-8bit-images-8-1-0-and-prior-did-not/8133
This commit is contained in:
Gabor Kiss-Vamosi 2022-02-07 19:14:37 +01:00
parent 78966f5cc4
commit 9a1e385b2b
2 changed files with 5 additions and 4 deletions
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1
docs/CHANGELOG.md
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@ -23,6 +23,7 @@ The GPU support for NXP microcontrollers is still not updated to the new draw ar
- :warning: feat(fs): add caching option for lv_fs-read [`2979`](https://github.com/littlevgl/lvgl/pull/2979)
- :warning: feat(span): lv_spangroup_get_expand_width() adds a parameter [`2968`](https://github.com/littlevgl/lvgl/pull/2968)
- :warning: arch(draw): allow replacing the draw engine [`db53ea9`](https://github.com/littlevgl/lvgl/commit/db53ea925c9502b20f38db0fc30c4ef599bdfc33)
- :warning: indexed images are not chroma keyed. Use the alpha chaneel instead.
### Architectural

8
src/draw/lv_img_buf.h
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@ -67,10 +67,10 @@ enum {
LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED, /**< Same as `LV_IMG_CF_TRUE_COLOR` but LV_COLOR_TRANSP pixels
will be transparent*/
LV_IMG_CF_INDEXED_1BIT, /**< Can have 2 different colors in a palette (always chroma keyed)*/
LV_IMG_CF_INDEXED_2BIT, /**< Can have 4 different colors in a palette (always chroma keyed)*/
LV_IMG_CF_INDEXED_4BIT, /**< Can have 16 different colors in a palette (always chroma keyed)*/
LV_IMG_CF_INDEXED_8BIT, /**< Can have 256 different colors in a palette (always chroma keyed)*/
LV_IMG_CF_INDEXED_1BIT, /**< Can have 2 different colors in a palette (can't be chroma keyed)*/
LV_IMG_CF_INDEXED_2BIT, /**< Can have 4 different colors in a palette (can't be chroma keyed)*/
LV_IMG_CF_INDEXED_4BIT, /**< Can have 16 different colors in a palette (can't be chroma keyed)*/
LV_IMG_CF_INDEXED_8BIT, /**< Can have 256 different colors in a palette (can't be chroma keyed)*/
LV_IMG_CF_ALPHA_1BIT, /**< Can have one color and it can be drawn or not*/
LV_IMG_CF_ALPHA_2BIT, /**< Can have one color but 4 different alpha value*/