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feat: updated engine

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This commit is contained in:
Sara Gerretsen 2026-07-10 17:04:34 +02:00
parent cbe99774ff
commit f4cf6b3999
6607 changed files with 910135 additions and 430025 deletions
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14
engine/thirdparty/meshoptimizer/indexcodec.cpp vendored
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@ -19,15 +19,9 @@ const int kDecodeIndexVersion = 1;
typedef unsigned int VertexFifo[16];
typedef unsigned int EdgeFifo[16][2];
static const unsigned int kTriangleIndexOrder[3][3] = {
{0, 1, 2},
{1, 2, 0},
{2, 0, 1},
};
static const unsigned char kCodeAuxEncodingTable[16] = {
0x00, 0x76, 0x87, 0x56, 0x67, 0x78, 0xa9, 0x86, 0x65, 0x89, 0x68, 0x98, 0x01, 0x69,
0, 0, // last two entries aren't used for encoding
0, 0 // last two entries aren't used for encoding
};
static int rotateTriangle(unsigned int a, unsigned int b, unsigned int c, unsigned int next)
@ -194,6 +188,8 @@ size_t meshopt_encodeIndexBuffer(unsigned char* buffer, size_t buffer_size, cons
int fecmax = version >= 1 ? 13 : 15;
static const int rotations[] = {0, 1, 2, 0, 1};
// use static encoding table; it's possible to pack the result and then build an optimal table and repack
// for now we keep it simple and use the table that has been generated based on symbol frequency on a training mesh set
const unsigned char* codeaux_table = kCodeAuxEncodingTable;
@ -211,7 +207,7 @@ size_t meshopt_encodeIndexBuffer(unsigned char* buffer, size_t buffer_size, cons
if (fer >= 0 && (fer >> 2) < 15)
{
// note: getEdgeFifo implicitly rotates triangles by matching a/b to existing edge
const unsigned int* order = kTriangleIndexOrder[fer & 3];
const int* order = rotations + (fer & 3);
unsigned int a = indices[i + order[0]], b = indices[i + order[1]], c = indices[i + order[2]];
@ -247,7 +243,7 @@ size_t meshopt_encodeIndexBuffer(unsigned char* buffer, size_t buffer_size, cons
else
{
int rotation = rotateTriangle(indices[i + 0], indices[i + 1], indices[i + 2], next);
const unsigned int* order = kTriangleIndexOrder[rotation];
const int* order = rotations + rotation;
unsigned int a = indices[i + order[0]], b = indices[i + order[1]], c = indices[i + order[2]];