This function can be used to retrieve the current blend mode being used for drawing. The returned value will be one of the following constants (the default value is bm_normal):
| Blend Mode Constant | |||
|---|---|---|---|
| Constant | Description | Extended Blend Mode | Blend Equation |
| bm_normal | Normal blending (the default blend mode). | (bm_src_alpha, bm_inv_src_alpha) | bm_eq_add |
| bm_add | Additive blending. Luminosity values of light areas are added. | (bm_src_alpha, bm_one) | bm_eq_add |
| bm_subtract | Subtractive blending. Source is subtracted from the destination. | (bm_src_alpha, bm_one) | bm_eq_subtract |
| bm_reverse_subtract | Reverse subtractive blending. Destination is subtracted from the source. | (bm_src_alpha, bm_one) | bm_eq_reverse_subtract |
| bm_min | Smaller value from source and destination is selected. | (bm_one, bm_one) | bm_eq_min |
| bm_max | Max blending. Similar to additive blending. | (bm_src_alpha, bm_inv_src_colour) | bm_eq_add |
gpu_get_blendmode();
Blend Mode Constant (see above for constants)
if (gpu_get_blendmode() != bm_normal)
{
gpu_set_blendmode(bm_normal);
}
The above code gets the current blend mode and if it is not bm_normal it is set to that constant.