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Tune polygon offset handling to avoid issues with mesh nodes (#16064)

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sfan5 2025-05-02 21:27:45 +02:00 • committed by GitHub
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commit d795c28af8
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1 changed files with 12 additions and 0 deletions
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src/nodedef.cpp
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@ -910,6 +910,7 @@ void ContentFeatures::updateTextures(ITextureSource *tsrc, IShaderSource *shdsrc
u32 overlay_shader = shdsrc->getShader("nodes_shader", overlay_material, drawtype); u32 overlay_shader = shdsrc->getShader("nodes_shader", overlay_material, drawtype);
// Tiles (fill in f->tiles[]) // Tiles (fill in f->tiles[])
bool any_polygon_offset = false;
for (u16 j = 0; j < 6; j++) { for (u16 j = 0; j < 6; j++) {
tiles[j].world_aligned = isWorldAligned(tdef[j].align_style, tiles[j].world_aligned = isWorldAligned(tdef[j].align_style,
tsettings.world_aligned_mode, drawtype); tsettings.world_aligned_mode, drawtype);
@ -922,6 +923,17 @@ void ContentFeatures::updateTextures(ITextureSource *tsrc, IShaderSource *shdsrc
tdef[j].backface_culling, tsettings); tdef[j].backface_culling, tsettings);
tiles[j].layers[0].need_polygon_offset = !tiles[j].layers[1].empty(); tiles[j].layers[0].need_polygon_offset = !tiles[j].layers[1].empty();
any_polygon_offset |= tiles[j].layers[0].need_polygon_offset;
}
if (drawtype == NDT_MESH && any_polygon_offset) {
// Our per-tile polygon offset enablement workaround works fine for normal
// nodes and anything else, where we know that different tiles are different
// faces that couldn't possibly conflict with each other.
// We can't assume this for mesh nodes, so apply it to all tiles (= materials)
// then.
for (u16 j = 0; j < 6; j++)
tiles[j].layers[0].need_polygon_offset = true;
} }
MaterialType special_material = material_type; MaterialType special_material = material_type;