OpenGL in the vast majority of effects are related to certain types of (color) mixed about. Blending is defined as the color of a pixel and has drawn on the screen and its corresponding pixel color combination. As for how to combine these two colors is dependent on the color of the alpha channel of the sub-value, and/or the use of blending functions. Alpha is usually the color value at the end of the first four color composition of components. We are all in front of the class to specify the color with GL_RGB three components. GL_RGBA corresponding alpha component values can be specified. Furthermore, we can use glColor4f () instead of glColor3f ().

Lesson08
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