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d3dx9: Handle special adjacency index value in d3dx9_mesh_OptimizeInplace().

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Paul Gofman 2023-09-14 16:20:08 -06:00 committed by Alexandre Julliard
parent e0f98c0ce9
commit 629c2f90d6
1 changed files with 11 additions and 3 deletions
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14
dlls/d3dx9_36/mesh.c
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@ -1624,6 +1624,13 @@ static HRESULT remap_faces_for_attrsort(struct d3dx9_mesh *This, const DWORD *in
return D3D_OK;
}
static DWORD adjacency_remap(DWORD *face_remap, DWORD index)
{
if (index == 0xffffffff)
return index;
return face_remap[index];
}
static HRESULT WINAPI d3dx9_mesh_OptimizeInplace(ID3DXMesh *iface, DWORD flags, const DWORD *adjacency_in,
DWORD *adjacency_out, DWORD *face_remap_out, ID3DXBuffer **vertex_remap_out)
{
@ -1778,9 +1785,10 @@ static HRESULT WINAPI d3dx9_mesh_OptimizeInplace(ID3DXMesh *iface, DWORD flags,
for (i = 0; i < This->numfaces; i++) {
DWORD old_pos = i * 3;
DWORD new_pos = face_remap[i] * 3;
adjacency_out[new_pos++] = face_remap[adjacency_in[old_pos++]];
adjacency_out[new_pos++] = face_remap[adjacency_in[old_pos++]];
adjacency_out[new_pos++] = face_remap[adjacency_in[old_pos++]];
adjacency_out[new_pos++] = adjacency_remap(face_remap, adjacency_in[old_pos++]);
adjacency_out[new_pos++] = adjacency_remap(face_remap, adjacency_in[old_pos++]);
adjacency_out[new_pos] = adjacency_remap(face_remap, adjacency_in[old_pos]);
}
} else {
memcpy(adjacency_out, adjacency_in, This->numfaces * 3 * sizeof(*adjacency_out));