SpriteKit shader crash iOS 9: SKDefaultShading, gl_FragCoord

Question

Just installed the iOS 9 open beta (version 3) and now I\'m having loads of problems with SpriteKit shaders. On iOS 8 the following code worked just fine:

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Answer 1

My custom SKShader also stopped working in ios9 on metal devices.

I was able to fix it using v_tex_coord to get the pixel position, and custom uniform to send in the sprite size (There seems to be a bug where u_sprite_size isn't being passed in.)

[SKUniform uniformWithName:@"u_fixed_size" floatVector2:GLKVector2Make(n.calculateAccumulatedFrame.size.width, n.calculateAccumulatedFrame.size.height)]