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native-scene: decode k_32_32_32_FLOAT texcoords

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decode_uv handled vertex formats 25, 26, 31, 37 and 38 and fell through to
"default: break" for anything else, leaving the UV at (0,0). Community custom
maps (ArenaBuilder-built worlds) declare their texcoord as
k_32_32_32_FLOAT (xenos enum 57), so every vertex of every world surface got
a zero UV, every pixel sampled one texel, and the map rendered as flat
untextured colour - the "custom maps have no textures on the native renderer"
report. The emulated renderer is unaffected: it replays the guest's own vertex
fetch and never re-decodes.

x is at +0 and y at +4 exactly as for the other 32-bit float pairs, so 57
joins the existing 37/38 case.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
andrewnakas 2026-08-11 12:55:13 -06:00
parent d486b5b217
commit 14371ab94a
1 changed files with 8 additions and 0 deletions
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8
src/skate3_native_scene_gpu.cpp
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@ -856,6 +856,14 @@ bool DecodeMesh(nrhi::Device* device, uint8_t* base, const DrawItem& item,
break; break;
case 37: // k_32_32_FLOAT (hair strand-alpha UV; xenos enum 37) case 37: // k_32_32_FLOAT (hair strand-alpha UV; xenos enum 37)
case 38: // k_32_32_32_32_FLOAT (use xy) case 38: // k_32_32_32_32_FLOAT (use xy)
case 57: // k_32_32_32_FLOAT (use xy). Community custom maps
// (ArenaBuilder-built worlds) declare their texcoord this
// way; without this case the decode fell through to the
// default and left the UV at (0,0), so every pixel sampled
// one texel and the whole surface rendered as a single flat
// colour - the "custom maps have no textures on the native
// renderer" report. x is at +0 and y at +4 exactly as for
// the other float pairs.
u = std::bit_cast<float>(SwapU32(*reinterpret_cast<const uint32_t*>(q))); u = std::bit_cast<float>(SwapU32(*reinterpret_cast<const uint32_t*>(q)));
w = std::bit_cast<float>(SwapU32(*reinterpret_cast<const uint32_t*>(q + 4))); w = std::bit_cast<float>(SwapU32(*reinterpret_cast<const uint32_t*>(q + 4)));
break; break;