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Screenshots: Create 24-bit PNG files instead of 32-bit files to save some space

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Sour 2019-12-25 15:54:01 -05:00
parent 7921370937
commit 5336450ebf
1 changed files with 6 additions and 3 deletions
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9
Utilities/PNGHelper.cpp
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@ -7,13 +7,16 @@ bool PNGHelper::WritePNG(std::stringstream &stream, uint32_t* buffer, uint32_t x
{ {
size_t pngSize = 0; size_t pngSize = 0;
//ARGB -> ABGR //ARGB -> BGR
uint32_t size = xSize * ySize * bitsPerPixel / 8 / 4; uint32_t size = xSize * ySize * bitsPerPixel / 8 / 4;
vector<uint8_t> convertedData(size * 3, 0);
for(uint32_t i = 0; i < size; i++) { for(uint32_t i = 0; i < size; i++) {
buffer[i] = (buffer[i] & 0xFF00FF00) | ((buffer[i] & 0xFF0000) >> 16) | ((buffer[i] & 0xFF) << 16); convertedData[i * 3] = (buffer[i] & 0xFF0000) >> 16;
convertedData[i * 3 + 1] = (buffer[i] & 0xFF00) >> 8;
convertedData[i * 3 + 2] = (buffer[i] & 0xFF);
} }
void *pngData = tdefl_write_image_to_png_file_in_memory_ex(buffer, xSize, ySize, bitsPerPixel / 8, &pngSize, MZ_DEFAULT_LEVEL, MZ_FALSE); void* pngData = tdefl_write_image_to_png_file_in_memory_ex(convertedData.data(), xSize, ySize, 3, &pngSize, MZ_DEFAULT_LEVEL, MZ_FALSE);
if(!pngData) { if(!pngData) {
std::cout << "tdefl_write_image_to_png_file_in_memory_ex() failed!" << std::endl; std::cout << "tdefl_write_image_to_png_file_in_memory_ex() failed!" << std::endl;
return false; return false;