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lzwdgc 2024-04-22 02:20:53 +03:00
parent 53b835d187
commit e00603b511
2 changed files with 8 additions and 2 deletions
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2
.gitignore vendored
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@ -18,3 +18,5 @@ doc
*.ind *.ind
*.tab *.tab
*.json *.json
*.bmp

6
src/common/dxt5.h
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@ -24,6 +24,10 @@
#include "color.h" #include "color.h"
#include "mat.h" #include "mat.h"
// https://en.wikipedia.org/wiki/S3_Texture_Compression
// decompressor https://github.com/Benjamin-Dobell/s3tc-dxt-decompression
// compressor https://github.com/nothings/stb/blob/master/stb_dxt.h
// or modified https://github.com/Cyan4973/RygsDXTc/blob/master/stb_dxt.h
struct dxt5_block struct dxt5_block
{ {
union union
@ -99,7 +103,7 @@ struct dxt5_block
pixels[p].a = a[(alpha_part >> (16 + p * 3)) & 0b111]; pixels[p].a = a[(alpha_part >> (16 + p * 3)) & 0b111];
} }
} }
color interpolate(color c0, color c1, float m) static color interpolate(color c0, color c1, float m)
{ {
color r; color r;
for (int i = 0; i < 4; i++) for (int i = 0; i < 4; i++)