In the last tutorial I explained how to create 3D lights using vertex attributes. Today, I'll explain 3D distortion. The main difference is that 3D distortion is done in the vertex shader unlike our last 2 shaders. That means you can move each vertex with the vertex shader.
Flattening shapes
We will first try making a shader that flattens the 3d shapes. To do this we will simply set the z position to 0 for all vertices while leaving x and y positions unchanged. Make sure to comment out the normal attribute and use the default pass through fragment shader.
An important variable is "object_space_pos". It is the variable we can use for setting the position.
We will use the x and y components but will use 0 instead of z.
Here is the result:
An important variable is "object_space_pos". It is the variable we can use for setting the position.
We will use the x and y components but will use 0 instead of z.
Here is the result:
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