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Fix debug image comparison to make sure that the difference in our images takes into account alpha.

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This commit is contained in:
Pavel Krajcevski 2013-03-07 02:35:40 -05:00
parent b1ccdb1359
commit 42e75a5e4c
1 changed files with 9 additions and 8 deletions
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17
BPTCEncoder/src/BC7Compressor.cpp
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@ -1508,16 +1508,17 @@ namespace BC7C
uint8* unCompData = (uint8 *)unComp;
double diffSum = 0.0;
for(int i = 0; i < 64; i+=4) {
double rdiff = sad(unCompData[i], inBuf[i]);
double gdiff = sad(unCompData[i+1], inBuf[i+1]);
double bdiff = sad(unCompData[i+2], inBuf[i+2]);
double adiff = sad(unCompData[i+3], inBuf[i+3]);
diffSum += (rdiff + gdiff + bdiff + adiff) * ((unCompData[i+3] + inBuf[i+3])*0.5);
for(int k = 0; k < 64; k+=4) {
double rdiff = sad(unCompData[k], inBuf[k]);
double gdiff = sad(unCompData[k+1], inBuf[k+1]);
double bdiff = sad(unCompData[k+2], inBuf[k+2]);
double adiff = sad(unCompData[k+3], inBuf[k+3]);
double avga = ((float(unCompData[k+3]) + float(inBuf[k+3]))*0.5)/255.0;
diffSum += (rdiff + gdiff + bdiff + adiff) * avga;
}
double blockError = double(diffSum) / 64.0;
if(blockError > 50.0) {
fprintf(stderr, "WARNING: Block error very high (%.2f)\n", blockError);
if(blockError > 5.0) {
fprintf(stderr, "WARNING: Block error very high at <%d, %d>: (%.2f)\n", i, j, blockError);
}
#endif