gpu_set_blendenable

描述

This function can be used to toggle alpha-blending on and off. Basically, if you have this set to false, all images being drawn will be drawn 100% opaque, meaning that any transparent, or semi transparent, areas of a sprite or background will be visible as a solid colour. It is a good idea to have alpha blending off whenever possible (especially when developing for mobile devices) as this greatly increases the draw speed.

语法：

gpu_set_blendenable(enable);

参数：

参数	描述
enable	Enable or disable alpha blending value (true or false).

返回：

N/A（无返回值）

例如：

gpu_set_blendenable(false);
draw_sprite(spr_Background, 0, 0, 0);
gpu_set_blendenable(true);

The above code switches off alpha blending to draw a background sprite and then switches it back on again to continue drawing.

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