Qiancheng Zhao bigfacebear
bigfacebear
/ glGetTexImage.cpp
Last active
October 16, 2022 21:36
How to read an image by opencv, then copy it to a texture, and read it out at last.
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| cv::Mat img = cv::imread("img.png"); | |
| GLuint tex_in; | |
| glGenTextures(1, &tex_in); | |
| glBindTexture(GL_TEXTURE_2D, tex_in); | |
| /*By practice, the internalParam: | |
| * GL_RGB, GL_RGBA, GL_RGB8, GL_RGBA8 work | |
| * GL_RGB8UI, GL_RGBA8UI don't work | |
| */ | |
| glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB8, img.cols, img.rows, 0, GL_BGR, GL_UNSIGNED_BYTE, img.data); // copy data to texture object |