Method updateAlphaBlend

src/main/java/net/optifine/shaders/Shaders.java:3496–3521

(Program programOld, Program programNew)

    }

    private static void updateAlphaBlend(Program programOld, Program programNew)
    {
        if (programOld.getAlphaState() != null)
        {
            GlStateManager.unlockAlpha();
        }

        if (programOld.getBlendState() != null)
        {
            GlStateManager.unlockBlend();
        }

        GlAlphaState glalphastate = programNew.getAlphaState();

        if (glalphastate != null)
        {
            GlStateManager.lockAlpha(glalphastate);
        }

        GlBlendState glblendstate = programNew.getBlendState();

        if (glblendstate != null)
        {
            GlStateManager.lockBlend(glblendstate);
        }
    }

    private static void setProgramUniform1i(ShaderUniform1i su, int value)
    {