g_chunk description (#16)

saintsrowmods2 · Feb 25, 2024 · 70f1f86 · 70f1f86
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diff --git a/docs/SR2/formats/chunks/g_chunk_pc.md b/docs/SR2/formats/chunks/g_chunk_pc.md
@@ -0,0 +1,17 @@
+# g_chunk_pc
+
+The GPU chunk file only contains vertex and index buffers. The file consists of two major parts:
+
+## Shared buffers section
+Massive shared vertex and index buffers for static world geometry.
+
+Contents:
+
+- 0..n vertex buffers for each type of vertex. Type means the number of UV's and such in a vertex. 
+- A single index buffer for the above vertex buffers.
+
+## Individual models section
+
+- The CPU chunk header contains a pointer to this section.
+- The contents is obviously a bunch of models, but where exactly are the headers is not fully figured out.
+- The shared buffer seems to return garbage for all "loose" and destroyable objects, so it's probably safe to assume this section is the one holding them instead.
diff --git a/docs/SR2/formats/chunkfiles.md → docs/SR2/formats/chunks/index.md b/docs/SR2/formats/chunkfiles.md → docs/SR2/formats/chunks/index.md
@@ -1,4 +1,4 @@
-# Chunkfiles
+# Chunks
 !!! note "File extensions"
     `.chunk_pc`
     `.g_chunk_pc` 
@@ -105,5 +105,3 @@ char        texture_names[num_textures];//
 <alignment padding 16>                  //
 
 ```
-
-## .g_chunk_pc layout
diff --git a/docs/SR2/formats/index.md b/docs/SR2/formats/index.md
@@ -4,7 +4,7 @@
 | ------------- | --------------------------------------------------- | ------------------------------------ | ---------------------------------------------------------------------------------------------------- |
 | Animation     | `.anim_pc` `.rig_pc`                                |                                      |                                                                                                      |
 | Audio         | `.xsb` `.xwb` `xgs`                                 | XACT Sound Bank, Wave Bank, Settings |                                                                                                      |
-| Chunkfile     | `.chunk_pc` `.g_chunk_pc`                           | World data                           | [`SR2_Chonker`](../../tools/sr2_chonker) [`SR2_ChunksTextureTool`](../../tools/sr2chunkstexturetool) |
+| Chunks        | `.chunk_pc` `.g_chunk_pc`                           | World data                           | [`SR2_Chonker`](../../tools/sr2_chonker) [`SR2_ChunksTextureTool`](../../tools/sr2chunkstexturetool) |
 | Cityfile      | `.city_pc`                                          | Chunk directory                      |                                                                                                      |
 | Cloth sim     | `.sim_pc`                                           | Cloth simulation file                |                                                                                                      |
 | Coordinate    | `.cts`                                              |                                      | [`SR2_CTS_Mapper`](../../tools/sr2ctsmapper)                                                         |