Unity, graphics.blit (NULL, NULL, mat,0);

I use

Graphics.blit (NULL, FINALRT, MAT);

Synthesize a FINALRT and use FINALRT in the oninspector of the editor script

Graphics.drawtexture (RECT,FINALRT,MAT2);

To draw, the results show that the M_FINALRT display is wrong, and that the physical texture of FINALRT as a texture in the game scene is also wrong.

But if I block Graphics.drawtexture (RECT,FINALRT,MAT2), the objects in the game scene with FINALRT as textures will not get wrong, but of course I don't see FINALRT previews in inspector.

The experiment found that if the graphics.blit (null, FINALRT, MAT) followed by an additional sentence:

#if Unity_editor
Graphics.blit (null, NULL, mat,0);//if I want to draw finalrt with a shader in editor script, I must write this line, why?
# endif

Then the result is normal.

I don't know why.

Unity, graphics.blit (NULL, NULL, mat,0);