# Apply a purple filter glBlendFunc(GL_ZERO, GL_SRC_COLOR) glColor4f(1.0, 0.0, 0.5, 1.0)
# Invert all the colors
glBlendFunc(GL_ONE_MINUS_DST_COLOR,
GL_ZERO)
glColor4f(1.0, 1.0, 1.0, 1.0)
# Apply a purple filter glBlendFunc(GL_ZERO, GL_SRC_COLOR) glColor4f(1.0, 0.0, 0.5, 1.0) |
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# Invert all the colors
glBlendFunc(GL_ONE_MINUS_DST_COLOR,
GL_ZERO)
glColor4f(1.0, 1.0, 1.0, 1.0)
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