hiratara https://blog.hatena.ne.jp/hiratara/ Pixel Pedals of Tomakomai https://hiratara.hatenadiary.jp/ 技術 先のOpenGL化で、y座標をひっくり返すコードもついでにメモ。 int w = (int) [bitmap size].width; int h = (int) [bitmap size].height; unsigned char* byte_image = [bitmap bitmapData]; GLubyte* reverse_image; int i, j, b; int block = [bitmap hasAlpha] ? 4 : 3; //w(列)、h(行)、block(1ピクセルのバイト数)の長さの配列 reverse_image = malloc(block * size… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhiratara.hatenadiary.jp%2Fentry%2F20050721%2F1121876007" title="NSImage→OpenGLの座標系修正 - Pixel Pedals of Tomakomai" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2005-07-21 01:13:27 rich https://hiratara.hatenadiary.jp/entry/20050721/1121876007 1.0 100%