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Fixes the drawUtil rendering of polyhedrons by correcting the index ordering to work with triangleStrip as opposed to Fan.

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This commit is contained in:
Areloch 2016-05-22 23:51:58 -05:00
parent 65f51a89d8
commit 8a7159c00e
2 changed files with 12 additions and 2 deletions
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2
Engine/source/gfx/gfxDrawUtil.cpp
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@ -1015,7 +1015,7 @@ void GFXDrawUtil::_drawSolidPolyhedron( const GFXStateBlockDesc &desc, const Any
// Allocate a temp buffer for the face indices.
const U32 numIndices = poly.getNumEdges() * 2;
const U32 numIndices = poly.getNumEdges() * 3;
const U32 numPlanes = poly.getNumPlanes();
GFXPrimitiveBufferHandle prims( mDevice, numIndices, 0, GFXBufferTypeVolatile );

12
Engine/source/math/mPolyhedron.impl.h
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@ -385,6 +385,8 @@ U32 PolyhedronImpl< Base >::extractFace( U32 plane, IndexType* outIndices, U32 m
// so it should be sufficiently fast to just loop over the original
// set.
U32 indexItr = 0;
do
{
// Add the vertex for the current edge.
@ -392,7 +394,15 @@ U32 PolyhedronImpl< Base >::extractFace( U32 plane, IndexType* outIndices, U32 m
if( idx >= maxOutIndices )
return 0;
outIndices[ idx ++ ] = currentVertex;
++indexItr;
if (indexItr >= 3)
{
outIndices[idx++] = firstEdge->vertex[0];
indexItr = 0;
}
outIndices[idx++] = currentVertex;
// Look for next edge.