change the uv coord to usual convention

docs/api.md

@@ -51,8 +51,6 @@ Find the closest intersection for each ray.
 
 ### Returns
 
-> ⚠️ The UV coordinates returned have different convention: `uv[0]` corresponds to the second vertex and `uv[1]` correspongs to the third vertex.
-
 If `stream_compaction` is `False`:
 - `hit` (`Bool[torch.Tensor, "*b"]`): A boolean tensor indicating if each ray intersects with the mesh.
 - `front` (`Bool[torch.Tensor, "*b"]`): A boolean tensor indicating if the intersection is from the front face of the mesh.

test/test.py

@@ -38,8 +38,7 @@
 tri_v = mesh_faces[tri_idx]
 tri_norm = mesh_normals[tri_v]
 print(tri_v)
-# uv[0] -> 2nd, uv[1] -> 3rd, (1 - uv[0] - uv[1]) -> 1st
-hit_norm = uv[:, :1] * tri_norm[:, 1] + uv[:, 1:] * tri_norm[:, 2] + (1 - uv[:, :1] - uv[:, 1:]) * tri_norm[:, 0]
+hit_norm = uv[:, :1] * tri_norm[:, 0] + uv[:, 1:] * tri_norm[:, 1] + (1 - uv[:, :1] - uv[:, 1:]) * tri_norm[:, 2]
 loc[hit] = hit_norm
 plt.imshow(loc.cpu())
 plt.show()

triro/__init__.py

@@ -1,2 +1,2 @@
 
-__version__ = '0.0.2'
+__version__ = '1.0.0'

triro/backend/shaders.cu

@@ -110,7 +110,7 @@ extern "C" __global__ void __closesthit__intersectsClosest() {
         uv.x * verts[1].z + uv.y * verts[2].z + (1 - uv.x - uv.y) * verts[0].z};
 
     result->triIdx = triIdx;
-    result->uv = uv;
+    result->uv = {1 - uv.x - uv.y, uv.x};
     result->hit = true;
     result->front = optixIsFrontFaceHit();
     result->loc = isectLoc;