//lodepng용 추가 함수
static void PrintLog(LodePNG::Decoder &decoder) {
if(decoder.hasError()) {
std::cout << "error " << decoder.getError() << ": " << LodePNG_error_text(decoder.getError()) << std::endl;
} else {
std::cout << "\n" <<
"w: " << decoder.getWidth() << "\n" <<
"h: " << decoder.getHeight() << "\n" <<
"bitDepth: " << decoder.getInfoPng().color.bitDepth << "\n" <<
"bpp: " << decoder.getBpp() << "\n" <<
"colorChannels: " << decoder.getChannels() << "\n" <<
"paletteSize: " << decoder.getInfoPng().color.palettesize / 4 << "\n" <<
"colorType: " << decoder.getInfoPng().color.colorType << "\n" <<
"compressionMethod: " << decoder.getInfoPng().compressionMethod << "\n" <<
"filterMethod: " << decoder.getInfoPng().filterMethod << "\n" <<
"interlaceMethod: " << decoder.getInfoPng().interlaceMethod << "\n";
for(size_t i = 0; i < decoder.getInfoPng().text.num; i++) {
std::cout << decoder.getInfoPng().text.keys[i] << ": " << decoder.getInfoPng().text.strings[i] << "\n";
}
}
}
static GLuint LoadTexture(const char* filename)
{
unsigned char* buffer;
unsigned char* image;
size_t buffersize, imagesize;
LodePNG_Decoder decoder;
LodePNG_loadFile(&buffer, &buffersize, filename);
LodePNG_Decoder_init(&decoder);
decoder.infoRaw.color.colorType = 0;
decoder.infoRaw.color.bitDepth = 8;
LodePNG_Decoder_decode(&decoder, &image, &imagesize, buffer, buffersize);
pezCheck(!decoder.error, "error %u: %s\n", decoder.error, LodePNG_error_text(decoder.error));
int bpp = LodePNG_InfoColor_getBpp(&decoder.infoPng.color);
int bitDepth = decoder.infoPng.color.bitDepth;
int colorChannels = LodePNG_InfoColor_getChannels(&decoder.infoPng.color);
pezCheck(bpp == 8 && bitDepth == 8 && colorChannels == 1);
int w = decoder.infoPng.width;
int h = decoder.infoPng.height;
pezPrintString("Loaded %s (%d x %d) bufferSize = %d, imageSize = %d\n", filename, w, h, buffersize, imagesize);
GLuint handle;
glGenTextures(1, &handle);
glBindTexture(GL_TEXTURE_2D, handle);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glPixelStorei(GL_PACK_ALIGNMENT, 1);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RED, w, h, 0, GL_RED, GL_UNSIGNED_BYTE, image);
free(buffer);
free(image);
LodePNG_Decoder_cleanup(&decoder);
pezCheck(OpenGLError);
return handle;
}
