07/06/2017

Research:

Some important tips about loading textures in shaders:

• Remember to glDeleteTextures(1, &texId) in each cycle. Otherwise, it will cause memory overflow.
• GLuint textureId must be initialized to different numbers, if there are 2 textures:
  • GLuint textureId[2];
    • It will load the second texture for BOTH textures, the first texture will disappear.
  • GLuint textureId[2] = {0,0};
    • It will load the second texture for BOTH textures, the first texture will disappear.
  • GLuint textureId[2] = {0,1};
    • Good! This is the correct way!
• GL_PIXEL_UNPACK_BUFFER