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Fix duplicate documentation for generateShadowIndexBuffer after a failed
rewording attempt.
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Arseny Kapoulkine
2024-10-24 16:32:45 -07:00
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@@ -130,12 +130,9 @@ Since quantized vertex attributes often need to remain in their compact represen
## Shadow indexing
Many rendering pipelines require meshes to be rendered to depth-only targets, such as shadow maps or during a depth pre-pass, in addition to color/G-buffer targets. While using the same geometry data for both cases is possible, reducing the number of unique vertices for depth-only rendering can be beneficial, especially when the source geometry has many attribute seams due to faceted shading or lightmap texture seams.
To achieve this, this library provides the `meshopt_generateShadowIndexBuffer` algorithm, which generates a second (shadow) index buffer that can be used with the original vertex data:
This is possible to achieve using `meshopt_generateShadowIndexBuffer` algorithm, which will generate a second (shadow) index buffer that can be used with the original vertex data. Because the vertex data is shared, this should be done after other optimizations of the vertex/index data, but it is possible (and recommended) to optimize the resulting index buffer for vertex cache at the end:
```c++
std::vector<unsigned int> shadow_indices(index_count);
// note: this assumes Vertex starts with float3 positions and should be adjusted accordingly for quantized positions