Function convertRG8ToR8

core/renderer/backend/PixelFormatUtils.cpp:249–255

IIIIIIIIAAAAAAAA -> AAAAAAAA

// IIIIIIIIAAAAAAAA -> AAAAAAAA
static void convertRG8ToR8(const unsigned char* data, size_t dataLen, unsigned char* outData)
{
    for (size_t i = 1; i < dataLen; i += 2)
    {
        *outData++ = data[i];  // A
    }
}

// RRRRRRRRGGGGGGGGBBBBBBBB -> RRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA
static void convertRGB8ToRGBA8(const unsigned char* data, size_t dataLen, unsigned char* outData)