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  1. bgolus
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    Question Trying to understand relationship between UV sets and TEXCOORDs

    Yes and no. You do not need to access the 3rd UV set via TEXCOORD4 at all. Use TEXCOORD2 in the appdata struct. And then output it on whatever...
    Post by: bgolus, Apr 18, 2024 at 6:18 PM in forum: Shaders
  2. bgolus
    Post

    Question Trying to understand relationship between UV sets and TEXCOORDs

    Correct. If you specify semantics that the source mesh data doesn't have, Unity will fill in data for you to keep the GPU from crashing. For...
    Post by: bgolus, Apr 18, 2024 at 5:41 PM in forum: Shaders
  3. bgolus
    Post

    Question How to pass an uint uniform

    The "real" type is whatever format you created the texture resource as. But that doesn't matter since the type specifier is how the data in the...
    Post by: bgolus, Apr 18, 2024 at 5:32 PM in forum: Shaders
  4. bgolus
    Post

    Question Trying to understand relationship between UV sets and TEXCOORDs

    UNITY_LIGHTMODEL_AMBIENTThe names of structs and variables are completely arbitrary. appdata, vertex, uv0, normal, none of that actually means...
    Post by: bgolus, Apr 18, 2024 at 4:24 AM in forum: Shaders
  5. bgolus
    Post

    Question Blinking occurs in the process of making the object transparent.

    It's blinking because when you "make it transparent" you're swapping the material being used from the original lit opaque material on the original...
    Post by: bgolus, Apr 17, 2024 at 9:21 PM in forum: Shaders
  6. bgolus
    Post

    Question How to pass an uint uniform

    By default, Unity materials only support float point and (fairly recently) signed integer values. You can have a shader uniform be a uint and...
    Post by: bgolus, Apr 17, 2024 at 9:16 PM in forum: Shaders
  7. bgolus
    Post

    Resolved Shader access shadow depth map for each light source

    The short answer: No. Longer answer is to get access to the shadow maps from multiple lights, the only reliable way to get the shadow maps for...
    Post by: bgolus, Apr 15, 2024 at 9:12 PM in forum: Shaders
  8. bgolus
    Post

    Resolved Normal map is not visible on X axis with triplanar shader

    That shader looks familiar. ;) How is the mesh you're applying the material to being generated? An unfortunate caveat of Surface Shaders is the...
    Post by: bgolus, Apr 15, 2024 at 5:59 PM in forum: Shaders
  9. bgolus
    Post

    Question Pragma "addshadow" removes shadows from cutout shader.

    The issue is IN.screenPos is broken in the shadow caster pass for Surface Shaders. You need to use a custom Input variable to pass the screen...
    Post by: bgolus, Apr 15, 2024 at 4:21 AM in forum: Shaders
  10. bgolus
    Post

    Normal Reconstruction and Triplanar Mapping - An Unhappy Combination?

    Dynamic batching merges all batches meshes into world space. World space UVs will still work, but you’re more likely to have precision issues on...
    Post by: bgolus, Apr 15, 2024 at 1:36 AM in forum: Shaders
  11. bgolus
    Post

    Question How to sample Depth Texture for Unwrapped Mesh?

    Ah, that's a different question. Sampling the depth texture gets you the nearest visible opaque depth for the camera that the depth texture was...
    Post by: bgolus, Apr 4, 2024 in forum: Shaders
  12. bgolus
    Post

    Question How to sample Depth Texture for Unwrapped Mesh?

    Unless you're using a geometry shader, ComputeScreenPos() should always take whatever value you're outputting to SV_POSITION. In this shader,...
    Post by: bgolus, Apr 4, 2024 in forum: Shaders
  13. bgolus
    Post

    Question BilinearSample on Atlas texture

    So I understand, you're trying to figure out how to handle zooming out and showing the sprites at a screen size smaller than the number of texels...
    Post by: bgolus, Apr 1, 2024 in forum: Shaders
  14. bgolus
    Post

    Bug SV_PrimitiveId not work in hull shader and domain shader, only work in pixel shader

    I'm not going to argue that it wouldn't be great if Unity could be more responsive about bugs. But usually these kinds of fixes take months to get...
    Post by: bgolus, Mar 27, 2024 in forum: Shaders
  15. bgolus
    Post

    Question Converting projection matrix in a shader

    The warping will be apparent in the surface's UVs, the meshes should still appear at the correct pixels. The thing is you don't need to do half...
    Post by: bgolus, Mar 27, 2024 in forum: Shaders
  16. bgolus
    Post

    Question Surface shader normals causing object to turn black

    Surface shaders expect any value you set on o.Normal to be a tangent space normal. If your mesh doesn't have tangents, setting the o.Normal will...
    Post by: bgolus, Mar 27, 2024 in forum: Shaders
  17. bgolus
    Post

    Bug SV_PrimitiveId not work in hull shader and domain shader, only work in pixel shader

    You're going to have to find another solution. This is the kind of bug that they'll maybe get around to fixing in a year or two.
    Post by: bgolus, Mar 27, 2024 in forum: Shaders
  18. bgolus
    Post

    Question Converting projection matrix in a shader

    Homogeneous clip space is the final value a vertex shader outputs. It's a 4 component representation of the screen space position which exists for...
    Post by: bgolus, Mar 27, 2024 in forum: Shaders
  19. bgolus
    Post

    Question Converting projection matrix in a shader

    There's one additional thing it can do, which is flip the projection matrix. You can handle this by multiplying the clip space y by...
    Post by: bgolus, Mar 25, 2024 in forum: Shaders
  20. bgolus
    Post

    Question Converting projection matrix in a shader

    In c#, all of the matrix construction utilities generate OpenGL style matrices, that is to say the clip space Z is between -w near clip and w far...
    Post by: bgolus, Mar 25, 2024 in forum: Shaders
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