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[cpp] Port binary reader fixes from spine-libgdx.

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- Fix path constraint flag decoding for 4.3 binary layout (positionMode mask)
- Read bone count for weighted vertices to enable exact allocation

Ported from:
- d5535aa279
- 03fabb37b1
This commit is contained in:
Mario Zechner 2026-03-10 14:27:31 +01:00
parent 8943c84d87
commit 5d6ae75082
1 changed files with 11 additions and 10 deletions
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21
spine-cpp/src/spine/SkeletonBinary.cpp
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@ -340,7 +340,7 @@ SkeletonData *SkeletonBinary::readSkeletonData(const unsigned char *binary, cons
data->_slot = slots[input.readInt(true)];
int flags = input.read();
data->_skinRequired = (flags & 1) != 0;
data->_positionMode = (PositionMode) ((flags >> 1) & 2);
data->_positionMode = (PositionMode) ((flags >> 1) & 1);
data->_spacingMode = (SpacingMode) ((flags >> 2) & 3);
data->_rotateMode = (RotateMode) ((flags >> 4) & 3);
if ((flags & 128) != 0) data->_offsetRotation = input.readFloat();
@ -757,16 +757,17 @@ int SkeletonBinary::readVertices(DataInput &input, Array<float> &vertices, Array
readFloatArray(input, verticesLength, scale, vertices.setSize(verticesLength, 0));
return verticesLength;
}
vertices.ensureCapacity(verticesLength * 3 * 3);
bones.ensureCapacity(verticesLength * 3);
for (int i = 0; i < vertexCount; ++i) {
int n = input.readInt(true);
bones.setSize(n, 0);
vertices.setSize((n - vertexCount) * 3, 0);
for (int b = 0, w = 0; b < n;) {
int boneCount = input.readInt(true);
bones.add(boneCount);
for (int ii = 0; ii < boneCount; ++ii) {
bones.add(input.readInt(true));
vertices.add(input.readFloat() * scale);
vertices.add(input.readFloat() * scale);
vertices.add(input.readFloat());
bones[b++] = boneCount;
for (int ii = 0; ii < boneCount; ++ii, w += 3) {
bones[b++] = input.readInt(true);
vertices[w] = input.readFloat() * scale;
vertices[w + 1] = input.readFloat() * scale;
vertices[w + 2] = input.readFloat();
}
}
return verticesLength;