Reconstructing texture data

C++ code posted by Jack
created at 05 Jun 14:14

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size_t oldByteSize = width * height * 2; //gray alpha
size_t byteSize = width * height * 4; //rgba
uint8_t* newData = (uint8_t*)malloc(byteSize);

size_t i = 0, j = 0;
for(; i < oldByteSize; i+=2, j+=4) {
    newData[0 + j] = data[i];
    newData[1 + j] = data[i];
    newData[2 + j] = data[i];
    newData[3 + j] = data[i+1];
}
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