# Dim the scene glBlendFunc(GL_ZERO, GL_SRC_ALPHA) glColor4f(1.0, 1.0, 1.0, 0.5)
Blending can be used to apply a color filter to the whole scene
Draw a square that covers the entire window, with the appropriate blending function
# Dim the scene glBlendFunc(GL_ZERO, GL_SRC_ALPHA) glColor4f(1.0, 1.0, 1.0, 0.5) |
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