How to see how the UV coordinates are deformed?
To make it easy to see how the UV coordinates are deformed, you can use this test texture. UV test texture. Create a material that uses our shader, with the test texture as its albedo map. Set its tiling to 4 so we can see how the texture repeats.
How to fix rotation of texture in shader?
It would be much more efficient to compute the rotation matrix in a script in order to avoid the costly sincos () at each vert, and pass it as a float4 attribute to the shader, as it is constant across all verts (constant within a frame). Changed shader to fix rotate 90 degrees. if (_isRotat==1) { _RotationDegrees=4.712385; } // 90 degrees.
How to do catlike coding with texture distortion?
Create a material that uses our shader, with the test texture as its albedo map. Set its tiling to 4 so we can see how the texture repeats. Then add a quad to the scene with this material. For best viewing, rotate it 90° around its X axis so it lies flat in the XZ plane. That makes it easy to look at it from any angle.
How to rotate Uvs in a Cg shader?
So to summarize: I want to rotate a texture/uvs in a CG shader and NOT through script (though i realize and acknowledge it is fully possible to do so and it has many merits.) You have to apply a rotation matrix to your texture coordinates in the Cg shader before doing the texture lookup. This should do it…
Why does my UV model come out distorted?
Whereas several sections have equal area on the model, they come out distorted when projected to the UV mappings: I already tried applying the object’s scale (Ctrl+A, Scale). It did help, but the UV is still distorted a bit. Is that normal, or am I doing something terribly wrong? .blend file here (the model in question is in the 4th layer)
What’s the name of the distorting texture Shader?
As we’re going to simulate a flowing surface by distorting texture mapping, name it DistortionFlow. Below is the new shader, with all comments and unneeded parts removed. To make it easy to see how the UV coordinates are deformed, you can use this test texture. UV test texture.
What happens when there is too much distortion in a texture?
too much distortion. We quickly end up with a texture that is way too distorted. This happens because the texture gets moved in multiple directions, stretching and squashing it more and more as time progresses. To prevent it from turning into a mess, we have to reset the animation at some point.
How to create a new shader for texture distortion?
Then create a new standard surface shader. As we’re going to simulate a flowing surface by distorting texture mapping, name it DistortionFlow. Below is the new shader, with all comments and unneeded parts removed. To make it easy to see how the UV coordinates are deformed, you can use this test texture.