glBlendEquationSeparate

set the RGB blend equation and the alpha blend equation separately

function glBlendEquationSeparate(int $modeRGB, int $modeAlpha) : void

arguments

1. int $modeRGB specifies the RGB blend equation, how the red, green, and blue components of the source and destination colors are combined. It must be GL_FUNC_ADD, GL_FUNC_SUBTRACT, GL_FUNC_REVERSE_SUBTRACT, GL_MIN, GL_MAX.
2. int $modeAlpha specifies the alpha blend equation, how the alpha component of the source and destination colors are combined. It must be GL_FUNC_ADD, GL_FUNC_SUBTRACT, GL_FUNC_REVERSE_SUBTRACT, GL_MIN, GL_MAX.

returns

void

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