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https://github.com/godotengine/godot
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Update thirdparty/meshoptimizer with distance-only error metric
This change replicates the distance-only metric patch which is now much smaller and cleaner, as upstream simplifier already tracks distance and attribute quadrics separately - it just doesn't store both errors in the collapse structures. The old two patches were removed as they are no longer needed.
This commit is contained in:
Arseny Kapoulkine
parent
c5f73a1783
commit
be2b0fcddc
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@ -1,176 +0,0 @@
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diff --git a/thirdparty/meshoptimizer/simplifier.cpp b/thirdparty/meshoptimizer/simplifier.cpp
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index d8d4a67391..3847afc736 100644
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--- a/thirdparty/meshoptimizer/simplifier.cpp
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+++ b/thirdparty/meshoptimizer/simplifier.cpp
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@@ -20,7 +20,7 @@
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#define TRACESTATS(i) (void)0
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#endif
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-#define ATTRIBUTES 8
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+#define ATTRIBUTES 3
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// This work is based on:
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// Michael Garland and Paul S. Heckbert. Surface simplification using quadric error metrics. 1997
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@@ -458,6 +458,7 @@ struct Collapse
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float error;
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unsigned int errorui;
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};
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+ float distance_error;
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};
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static float normalize(Vector3& v)
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@@ -538,6 +539,34 @@ static float quadricError(const Quadric& Q, const Vector3& v)
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return fabsf(r) * s;
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}
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+static float quadricErrorNoAttributes(const Quadric& Q, const Vector3& v)
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+{
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+ float rx = Q.b0;
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+ float ry = Q.b1;
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+ float rz = Q.b2;
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+
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+ rx += Q.a10 * v.y;
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+ ry += Q.a21 * v.z;
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+ rz += Q.a20 * v.x;
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+
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+ rx *= 2;
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+ ry *= 2;
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+ rz *= 2;
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+
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+ rx += Q.a00 * v.x;
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+ ry += Q.a11 * v.y;
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+ rz += Q.a22 * v.z;
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+
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+ float r = Q.c;
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+ r += rx * v.x;
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+ r += ry * v.y;
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+ r += rz * v.z;
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+
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+ float s = Q.w == 0.f ? 0.f : 1.f / Q.w;
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+
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+ return fabsf(r) * s;
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+}
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+
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static void quadricFromPlane(Quadric& Q, float a, float b, float c, float d, float w)
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{
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float aw = a * w;
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@@ -693,7 +722,7 @@ static void quadricUpdateAttributes(Quadric& Q, const Vector3& p0, const Vector3
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}
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#endif
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-static void fillFaceQuadrics(Quadric* vertex_quadrics, const unsigned int* indices, size_t index_count, const Vector3* vertex_positions, const unsigned int* remap)
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+static void fillFaceQuadrics(Quadric* vertex_quadrics, Quadric* vertex_no_attrib_quadrics, const unsigned int* indices, size_t index_count, const Vector3* vertex_positions, const unsigned int* remap)
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{
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for (size_t i = 0; i < index_count; i += 3)
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{
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@@ -703,6 +732,9 @@ static void fillFaceQuadrics(Quadric* vertex_quadrics, const unsigned int* indic
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Quadric Q;
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quadricFromTriangle(Q, vertex_positions[i0], vertex_positions[i1], vertex_positions[i2], 1.f);
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+ quadricAdd(vertex_no_attrib_quadrics[remap[i0]], Q);
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+ quadricAdd(vertex_no_attrib_quadrics[remap[i1]], Q);
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+ quadricAdd(vertex_no_attrib_quadrics[remap[i2]], Q);
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#if ATTRIBUTES
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quadricUpdateAttributes(Q, vertex_positions[i0], vertex_positions[i1], vertex_positions[i2], Q.w);
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@@ -713,7 +745,7 @@ static void fillFaceQuadrics(Quadric* vertex_quadrics, const unsigned int* indic
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}
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}
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-static void fillEdgeQuadrics(Quadric* vertex_quadrics, const unsigned int* indices, size_t index_count, const Vector3* vertex_positions, const unsigned int* remap, const unsigned char* vertex_kind, const unsigned int* loop, const unsigned int* loopback)
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+static void fillEdgeQuadrics(Quadric* vertex_quadrics, Quadric* vertex_no_attrib_quadrics, const unsigned int* indices, size_t index_count, const Vector3* vertex_positions, const unsigned int* remap, const unsigned char* vertex_kind, const unsigned int* loop, const unsigned int* loopback)
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{
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for (size_t i = 0; i < index_count; i += 3)
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{
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@@ -757,6 +789,9 @@ static void fillEdgeQuadrics(Quadric* vertex_quadrics, const unsigned int* indic
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quadricAdd(vertex_quadrics[remap[i0]], Q);
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quadricAdd(vertex_quadrics[remap[i1]], Q);
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+
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+ quadricAdd(vertex_no_attrib_quadrics[remap[i0]], Q);
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+ quadricAdd(vertex_no_attrib_quadrics[remap[i1]], Q);
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}
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}
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}
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@@ -861,7 +896,7 @@ static size_t pickEdgeCollapses(Collapse* collapses, const unsigned int* indices
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return collapse_count;
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}
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-static void rankEdgeCollapses(Collapse* collapses, size_t collapse_count, const Vector3* vertex_positions, const Quadric* vertex_quadrics, const unsigned int* remap)
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+static void rankEdgeCollapses(Collapse* collapses, size_t collapse_count, const Vector3* vertex_positions, const Quadric* vertex_quadrics, const Quadric* vertex_no_attrib_quadrics, const unsigned int* remap)
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{
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for (size_t i = 0; i < collapse_count; ++i)
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{
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@@ -881,10 +916,14 @@ static void rankEdgeCollapses(Collapse* collapses, size_t collapse_count, const
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float ei = quadricError(qi, vertex_positions[i1]);
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float ej = quadricError(qj, vertex_positions[j1]);
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+ const Quadric& naqi = vertex_no_attrib_quadrics[remap[i0]];
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+ const Quadric& naqj = vertex_no_attrib_quadrics[remap[j0]];
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+
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// pick edge direction with minimal error
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c.v0 = ei <= ej ? i0 : j0;
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c.v1 = ei <= ej ? i1 : j1;
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c.error = ei <= ej ? ei : ej;
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+ c.distance_error = ei <= ej ? quadricErrorNoAttributes(naqi, vertex_positions[i1]) : quadricErrorNoAttributes(naqj, vertex_positions[j1]);
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}
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}
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@@ -981,7 +1020,7 @@ static void sortEdgeCollapses(unsigned int* sort_order, const Collapse* collapse
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}
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}
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-static size_t performEdgeCollapses(unsigned int* collapse_remap, unsigned char* collapse_locked, Quadric* vertex_quadrics, const Collapse* collapses, size_t collapse_count, const unsigned int* collapse_order, const unsigned int* remap, const unsigned int* wedge, const unsigned char* vertex_kind, const Vector3* vertex_positions, const EdgeAdjacency& adjacency, size_t triangle_collapse_goal, float error_limit, float& result_error)
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+static size_t performEdgeCollapses(unsigned int* collapse_remap, unsigned char* collapse_locked, Quadric* vertex_quadrics, Quadric* vertex_no_attrib_quadrics, const Collapse* collapses, size_t collapse_count, const unsigned int* collapse_order, const unsigned int* remap, const unsigned int* wedge, const unsigned char* vertex_kind, const Vector3* vertex_positions, const EdgeAdjacency& adjacency, size_t triangle_collapse_goal, float error_limit, float& result_error)
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{
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size_t edge_collapses = 0;
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size_t triangle_collapses = 0;
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@@ -1043,6 +1082,7 @@ static size_t performEdgeCollapses(unsigned int* collapse_remap, unsigned char*
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assert(collapse_remap[r1] == r1);
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quadricAdd(vertex_quadrics[r1], vertex_quadrics[r0]);
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+ quadricAdd(vertex_no_attrib_quadrics[r1], vertex_no_attrib_quadrics[r0]);
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if (vertex_kind[i0] == Kind_Complex)
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{
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@@ -1080,7 +1120,7 @@ static size_t performEdgeCollapses(unsigned int* collapse_remap, unsigned char*
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triangle_collapses += (vertex_kind[i0] == Kind_Border) ? 1 : 2;
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edge_collapses++;
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- result_error = result_error < c.error ? c.error : result_error;
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+ result_error = result_error < c.distance_error ? c.distance_error : result_error;
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}
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#if TRACE
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@@ -1469,9 +1509,11 @@ size_t meshopt_simplifyWithAttributes(unsigned int* destination, const unsigned
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Quadric* vertex_quadrics = allocator.allocate<Quadric>(vertex_count);
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memset(vertex_quadrics, 0, vertex_count * sizeof(Quadric));
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+ Quadric* vertex_no_attrib_quadrics = allocator.allocate<Quadric>(vertex_count);
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+ memset(vertex_no_attrib_quadrics, 0, vertex_count * sizeof(Quadric));
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- fillFaceQuadrics(vertex_quadrics, indices, index_count, vertex_positions, remap);
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- fillEdgeQuadrics(vertex_quadrics, indices, index_count, vertex_positions, remap, vertex_kind, loop, loopback);
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+ fillFaceQuadrics(vertex_quadrics, vertex_no_attrib_quadrics, indices, index_count, vertex_positions, remap);
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+ fillEdgeQuadrics(vertex_quadrics, vertex_no_attrib_quadrics, indices, index_count, vertex_positions, remap, vertex_kind, loop, loopback);
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if (result != indices)
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memcpy(result, indices, index_count * sizeof(unsigned int));
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@@ -1502,7 +1544,7 @@ size_t meshopt_simplifyWithAttributes(unsigned int* destination, const unsigned
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if (edge_collapse_count == 0)
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break;
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- rankEdgeCollapses(edge_collapses, edge_collapse_count, vertex_positions, vertex_quadrics, remap);
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+ rankEdgeCollapses(edge_collapses, edge_collapse_count, vertex_positions, vertex_quadrics, vertex_no_attrib_quadrics, remap);
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#if TRACE > 1
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dumpEdgeCollapses(edge_collapses, edge_collapse_count, vertex_kind);
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@@ -1521,7 +1563,7 @@ size_t meshopt_simplifyWithAttributes(unsigned int* destination, const unsigned
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printf("pass %d: ", int(pass_count++));
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#endif
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- size_t collapses = performEdgeCollapses(collapse_remap, collapse_locked, vertex_quadrics, edge_collapses, edge_collapse_count, collapse_order, remap, wedge, vertex_kind, vertex_positions, adjacency, triangle_collapse_goal, error_limit, result_error);
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+ size_t collapses = performEdgeCollapses(collapse_remap, collapse_locked, vertex_quadrics, vertex_no_attrib_quadrics, edge_collapses, edge_collapse_count, collapse_order, remap, wedge, vertex_kind, vertex_positions, adjacency, triangle_collapse_goal, error_limit, result_error);
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// no edges can be collapsed any more due to hitting the error limit or triangle collapse limit
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if (collapses == 0)
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@ -1,263 +0,0 @@
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diff --git a/thirdparty/meshoptimizer/meshoptimizer.h b/thirdparty/meshoptimizer/meshoptimizer.h
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index d95725dd71..46d28d3ea3 100644
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--- a/thirdparty/meshoptimizer/meshoptimizer.h
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+++ b/thirdparty/meshoptimizer/meshoptimizer.h
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@@ -321,6 +321,11 @@ enum
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meshopt_SimplifyLockBorder = 1 << 0,
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};
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+/**
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+ * Experimental: Mesh simplifier with attribute metric; attributes follow xyz position data atm (vertex data must contain 3 + attribute_count floats per vertex)
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+ */
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+MESHOPTIMIZER_EXPERIMENTAL size_t meshopt_simplifyWithAttributes(unsigned int* destination, const unsigned int* indices, size_t index_count, const float* vertex_data, size_t vertex_count, size_t vertex_stride, size_t target_index_count, float target_error, unsigned int options, float* result_error, const float* attributes, const float* attribute_weights, size_t attribute_count);
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+
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/**
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* Mesh simplifier
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* Reduces the number of triangles in the mesh, attempting to preserve mesh appearance as much as possible
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diff --git a/thirdparty/meshoptimizer/simplifier.cpp b/thirdparty/meshoptimizer/simplifier.cpp
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index 5f0e9bac31..797329b010 100644
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--- a/thirdparty/meshoptimizer/simplifier.cpp
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+++ b/thirdparty/meshoptimizer/simplifier.cpp
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@@ -20,6 +20,8 @@
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#define TRACESTATS(i) (void)0
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#endif
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+#define ATTRIBUTES 8
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+
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// This work is based on:
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// Michael Garland and Paul S. Heckbert. Surface simplification using quadric error metrics. 1997
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// Michael Garland. Quadric-based polygonal surface simplification. 1999
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@@ -376,6 +378,10 @@ static void classifyVertices(unsigned char* result, unsigned int* loop, unsigned
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struct Vector3
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{
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float x, y, z;
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+
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+#if ATTRIBUTES
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+ float a[ATTRIBUTES];
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+#endif
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};
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static float rescalePositions(Vector3* result, const float* vertex_positions_data, size_t vertex_count, size_t vertex_positions_stride)
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@@ -432,6 +438,13 @@ struct Quadric
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float a10, a20, a21;
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float b0, b1, b2, c;
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float w;
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+
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+#if ATTRIBUTES
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+ float gx[ATTRIBUTES];
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+ float gy[ATTRIBUTES];
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+ float gz[ATTRIBUTES];
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+ float gw[ATTRIBUTES];
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+#endif
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};
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struct Collapse
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@@ -474,6 +487,16 @@ static void quadricAdd(Quadric& Q, const Quadric& R)
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Q.b2 += R.b2;
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Q.c += R.c;
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Q.w += R.w;
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+
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+#if ATTRIBUTES
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+ for (int k = 0; k < ATTRIBUTES; ++k)
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+ {
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+ Q.gx[k] += R.gx[k];
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+ Q.gy[k] += R.gy[k];
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+ Q.gz[k] += R.gz[k];
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+ Q.gw[k] += R.gw[k];
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+ }
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+#endif
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}
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static float quadricError(const Quadric& Q, const Vector3& v)
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@@ -499,6 +522,17 @@ static float quadricError(const Quadric& Q, const Vector3& v)
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r += ry * v.y;
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r += rz * v.z;
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+#if ATTRIBUTES
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+ // see quadricUpdateAttributes for general derivation; here we need to add the parts of (eval(pos) - attr)^2 that depend on attr
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+ for (int k = 0; k < ATTRIBUTES; ++k)
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+ {
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+ float a = v.a[k];
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+
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+ r += a * a * Q.w;
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+ r -= 2 * a * (v.x * Q.gx[k] + v.y * Q.gy[k] + v.z * Q.gz[k] + Q.gw[k]);
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+ }
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+#endif
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+
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float s = Q.w == 0.f ? 0.f : 1.f / Q.w;
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return fabsf(r) * s;
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@@ -522,6 +556,13 @@ static void quadricFromPlane(Quadric& Q, float a, float b, float c, float d, flo
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Q.b2 = c * dw;
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Q.c = d * dw;
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Q.w = w;
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+
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+#if ATTRIBUTES
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+ memset(Q.gx, 0, sizeof(Q.gx));
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+ memset(Q.gy, 0, sizeof(Q.gy));
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+ memset(Q.gz, 0, sizeof(Q.gz));
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+ memset(Q.gw, 0, sizeof(Q.gw));
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+#endif
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}
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static void quadricFromPoint(Quadric& Q, float x, float y, float z, float w)
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@@ -574,6 +615,84 @@ static void quadricFromTriangleEdge(Quadric& Q, const Vector3& p0, const Vector3
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quadricFromPlane(Q, normal.x, normal.y, normal.z, -distance, length * weight);
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}
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+#if ATTRIBUTES
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+static void quadricUpdateAttributes(Quadric& Q, const Vector3& p0, const Vector3& p1, const Vector3& p2, float w)
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+{
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+ // for each attribute we want to encode the following function into the quadric:
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+ // (eval(pos) - attr)^2
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+ // where eval(pos) interpolates attribute across the triangle like so:
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+ // eval(pos) = pos.x * gx + pos.y * gy + pos.z * gz + gw
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+ // where gx/gy/gz/gw are gradients
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+ Vector3 p10 = {p1.x - p0.x, p1.y - p0.y, p1.z - p0.z};
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+ Vector3 p20 = {p2.x - p0.x, p2.y - p0.y, p2.z - p0.z};
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+
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+ // we compute gradients using barycentric coordinates; barycentric coordinates can be computed as follows:
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+ // v = (d11 * d20 - d01 * d21) / denom
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+ // w = (d00 * d21 - d01 * d20) / denom
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+ // u = 1 - v - w
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+ // here v0, v1 are triangle edge vectors, v2 is a vector from point to triangle corner, and dij = dot(vi, vj)
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+ const Vector3& v0 = p10;
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+ const Vector3& v1 = p20;
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+ float d00 = v0.x * v0.x + v0.y * v0.y + v0.z * v0.z;
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+ float d01 = v0.x * v1.x + v0.y * v1.y + v0.z * v1.z;
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+ float d11 = v1.x * v1.x + v1.y * v1.y + v1.z * v1.z;
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+ float denom = d00 * d11 - d01 * d01;
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+ float denomr = denom == 0 ? 0.f : 1.f / denom;
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+
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+ // precompute gradient factors
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+ // these are derived by directly computing derivative of eval(pos) = a0 * u + a1 * v + a2 * w and factoring out common factors that are shared between attributes
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+ float gx1 = (d11 * v0.x - d01 * v1.x) * denomr;
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+ float gx2 = (d00 * v1.x - d01 * v0.x) * denomr;
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+ float gy1 = (d11 * v0.y - d01 * v1.y) * denomr;
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+ float gy2 = (d00 * v1.y - d01 * v0.y) * denomr;
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+ float gz1 = (d11 * v0.z - d01 * v1.z) * denomr;
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+ float gz2 = (d00 * v1.z - d01 * v0.z) * denomr;
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+
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+ for (int k = 0; k < ATTRIBUTES; ++k)
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+ {
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+ float a0 = p0.a[k], a1 = p1.a[k], a2 = p2.a[k];
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+
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+ // compute gradient of eval(pos) for x/y/z/w
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+ // the formulas below are obtained by directly computing derivative of eval(pos) = a0 * u + a1 * v + a2 * w
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+ float gx = gx1 * (a1 - a0) + gx2 * (a2 - a0);
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+ float gy = gy1 * (a1 - a0) + gy2 * (a2 - a0);
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+ float gz = gz1 * (a1 - a0) + gz2 * (a2 - a0);
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+ float gw = a0 - p0.x * gx - p0.y * gy - p0.z * gz;
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+
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+ // quadric encodes (eval(pos)-attr)^2; this means that the resulting expansion needs to compute, for example, pos.x * pos.y * K
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+ // since quadrics already encode factors for pos.x * pos.y, we can accumulate almost everything in basic quadric fields
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+ Q.a00 += w * (gx * gx);
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+ Q.a11 += w * (gy * gy);
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+ Q.a22 += w * (gz * gz);
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+
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+ Q.a10 += w * (gy * gx);
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+ Q.a20 += w * (gz * gx);
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+ Q.a21 += w * (gz * gy);
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+
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+ Q.b0 += w * (gx * gw);
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+ Q.b1 += w * (gy * gw);
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+ Q.b2 += w * (gz * gw);
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+
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+ Q.c += w * (gw * gw);
|
||||
+
|
||||
+ // the only remaining sum components are ones that depend on attr; these will be addded during error evaluation, see quadricError
|
||||
+ Q.gx[k] = w * gx;
|
||||
+ Q.gy[k] = w * gy;
|
||||
+ Q.gz[k] = w * gz;
|
||||
+ Q.gw[k] = w * gw;
|
||||
+
|
||||
+#if TRACE > 2
|
||||
+ printf("attr%d: %e %e %e\n",
|
||||
+ k,
|
||||
+ (gx * p0.x + gy * p0.y + gz * p0.z + gw - a0),
|
||||
+ (gx * p1.x + gy * p1.y + gz * p1.z + gw - a1),
|
||||
+ (gx * p2.x + gy * p2.y + gz * p2.z + gw - a2)
|
||||
+ );
|
||||
+#endif
|
||||
+ }
|
||||
+}
|
||||
+#endif
|
||||
+
|
||||
static void fillFaceQuadrics(Quadric* vertex_quadrics, const unsigned int* indices, size_t index_count, const Vector3* vertex_positions, const unsigned int* remap)
|
||||
{
|
||||
for (size_t i = 0; i < index_count; i += 3)
|
||||
@@ -585,6 +704,9 @@ static void fillFaceQuadrics(Quadric* vertex_quadrics, const unsigned int* indic
|
||||
Quadric Q;
|
||||
quadricFromTriangle(Q, vertex_positions[i0], vertex_positions[i1], vertex_positions[i2], 1.f);
|
||||
|
||||
+#if ATTRIBUTES
|
||||
+ quadricUpdateAttributes(Q, vertex_positions[i0], vertex_positions[i1], vertex_positions[i2], Q.w);
|
||||
+#endif
|
||||
quadricAdd(vertex_quadrics[remap[i0]], Q);
|
||||
quadricAdd(vertex_quadrics[remap[i1]], Q);
|
||||
quadricAdd(vertex_quadrics[remap[i2]], Q);
|
||||
@@ -1278,14 +1400,20 @@ MESHOPTIMIZER_API unsigned int* meshopt_simplifyDebugLoopBack = 0;
|
||||
#endif
|
||||
|
||||
size_t meshopt_simplify(unsigned int* destination, const unsigned int* indices, size_t index_count, const float* vertex_positions_data, size_t vertex_count, size_t vertex_positions_stride, size_t target_index_count, float target_error, unsigned int options, float* out_result_error)
|
||||
+{
|
||||
+ return meshopt_simplifyWithAttributes(destination, indices, index_count, vertex_positions_data, vertex_count, vertex_positions_stride, target_index_count, target_error, options, out_result_error, 0, 0, 0);
|
||||
+}
|
||||
+
|
||||
+size_t meshopt_simplifyWithAttributes(unsigned int* destination, const unsigned int* indices, size_t index_count, const float* vertex_data, size_t vertex_count, size_t vertex_stride, size_t target_index_count, float target_error, unsigned int options, float* out_result_error, const float* attributes, const float* attribute_weights, size_t attribute_count)
|
||||
{
|
||||
using namespace meshopt;
|
||||
|
||||
assert(index_count % 3 == 0);
|
||||
- assert(vertex_positions_stride >= 12 && vertex_positions_stride <= 256);
|
||||
- assert(vertex_positions_stride % sizeof(float) == 0);
|
||||
+ assert(vertex_stride >= 12 && vertex_stride <= 256);
|
||||
+ assert(vertex_stride % sizeof(float) == 0);
|
||||
assert(target_index_count <= index_count);
|
||||
assert((options & ~(meshopt_SimplifyLockBorder)) == 0);
|
||||
+ assert(attribute_count <= ATTRIBUTES);
|
||||
|
||||
meshopt_Allocator allocator;
|
||||
|
||||
@@ -1299,7 +1427,7 @@ size_t meshopt_simplify(unsigned int* destination, const unsigned int* indices,
|
||||
// build position remap that maps each vertex to the one with identical position
|
||||
unsigned int* remap = allocator.allocate<unsigned int>(vertex_count);
|
||||
unsigned int* wedge = allocator.allocate<unsigned int>(vertex_count);
|
||||
- buildPositionRemap(remap, wedge, vertex_positions_data, vertex_count, vertex_positions_stride, allocator);
|
||||
+ buildPositionRemap(remap, wedge, vertex_data, vertex_count, vertex_stride, allocator);
|
||||
|
||||
// classify vertices; vertex kind determines collapse rules, see kCanCollapse
|
||||
unsigned char* vertex_kind = allocator.allocate<unsigned char>(vertex_count);
|
||||
@@ -1323,7 +1451,21 @@ size_t meshopt_simplify(unsigned int* destination, const unsigned int* indices,
|
||||
#endif
|
||||
|
||||
Vector3* vertex_positions = allocator.allocate<Vector3>(vertex_count);
|
||||
- rescalePositions(vertex_positions, vertex_positions_data, vertex_count, vertex_positions_stride);
|
||||
+ rescalePositions(vertex_positions, vertex_data, vertex_count, vertex_stride);
|
||||
+
|
||||
+#if ATTRIBUTES
|
||||
+ for (size_t i = 0; i < vertex_count; ++i)
|
||||
+ {
|
||||
+ memset(vertex_positions[i].a, 0, sizeof(vertex_positions[i].a));
|
||||
+
|
||||
+ for (size_t k = 0; k < attribute_count; ++k)
|
||||
+ {
|
||||
+ float a = attributes[i * attribute_count + k];
|
||||
+
|
||||
+ vertex_positions[i].a[k] = a * attribute_weights[k];
|
||||
+ }
|
||||
+ }
|
||||
+#endif
|
||||
|
||||
Quadric* vertex_quadrics = allocator.allocate<Quadric>(vertex_count);
|
||||
memset(vertex_quadrics, 0, vertex_count * sizeof(Quadric));
|
||||
@@ -1415,7 +1557,9 @@ size_t meshopt_simplify(unsigned int* destination, const unsigned int* indices,
|
||||
|
||||
// result_error is quadratic; we need to remap it back to linear
|
||||
if (out_result_error)
|
||||
+ {
|
||||
*out_result_error = sqrtf(result_error);
|
||||
+ }
|
||||
|
||||
return result_count;
|
||||
}
|
||||
39
thirdparty/meshoptimizer/patches/distance-only-metric.patch
vendored
Normal file
39
thirdparty/meshoptimizer/patches/distance-only-metric.patch
vendored
Normal file
|
|
@ -0,0 +1,39 @@
|
|||
diff --git a/thirdparty/meshoptimizer/simplifier.cpp b/thirdparty/meshoptimizer/simplifier.cpp
|
||||
index 5ba8570076..6f8b0e520e 100644
|
||||
--- a/thirdparty/meshoptimizer/simplifier.cpp
|
||||
+++ b/thirdparty/meshoptimizer/simplifier.cpp
|
||||
@@ -476,6 +476,8 @@ struct Collapse
|
||||
float error;
|
||||
unsigned int errorui;
|
||||
};
|
||||
+
|
||||
+ float distance_error;
|
||||
};
|
||||
|
||||
static float normalize(Vector3& v)
|
||||
@@ -941,6 +943,8 @@ static void rankEdgeCollapses(Collapse* collapses, size_t collapse_count, const
|
||||
float ei = quadricError(vertex_quadrics[remap[i0]], vertex_positions[i1]);
|
||||
float ej = quadricError(vertex_quadrics[remap[j0]], vertex_positions[j1]);
|
||||
|
||||
+ float dei = ei, dej = ej;
|
||||
+
|
||||
if (attribute_count)
|
||||
{
|
||||
ei += quadricError(attribute_quadrics[remap[i0]], &attribute_gradients[remap[i0] * attribute_count], attribute_count, vertex_positions[i1], &vertex_attributes[i1 * attribute_count]);
|
||||
@@ -951,6 +955,7 @@ static void rankEdgeCollapses(Collapse* collapses, size_t collapse_count, const
|
||||
c.v0 = ei <= ej ? i0 : j0;
|
||||
c.v1 = ei <= ej ? i1 : j1;
|
||||
c.error = ei <= ej ? ei : ej;
|
||||
+ c.distance_error = ei <= ej ? dei : dej;
|
||||
}
|
||||
}
|
||||
|
||||
@@ -1097,7 +1102,7 @@ static size_t performEdgeCollapses(unsigned int* collapse_remap, unsigned char*
|
||||
triangle_collapses += (vertex_kind[i0] == Kind_Border) ? 1 : 2;
|
||||
edge_collapses++;
|
||||
|
||||
- result_error = result_error < c.error ? c.error : result_error;
|
||||
+ result_error = result_error < c.distance_error ? c.distance_error : result_error;
|
||||
}
|
||||
|
||||
#if TRACE
|
||||
7
thirdparty/meshoptimizer/simplifier.cpp
vendored
7
thirdparty/meshoptimizer/simplifier.cpp
vendored
|
|
@ -476,6 +476,8 @@ struct Collapse
|
|||
float error;
|
||||
unsigned int errorui;
|
||||
};
|
||||
|
||||
float distance_error;
|
||||
};
|
||||
|
||||
static float normalize(Vector3& v)
|
||||
|
|
@ -941,6 +943,8 @@ static void rankEdgeCollapses(Collapse* collapses, size_t collapse_count, const
|
|||
float ei = quadricError(vertex_quadrics[remap[i0]], vertex_positions[i1]);
|
||||
float ej = quadricError(vertex_quadrics[remap[j0]], vertex_positions[j1]);
|
||||
|
||||
float dei = ei, dej = ej;
|
||||
|
||||
if (attribute_count)
|
||||
{
|
||||
ei += quadricError(attribute_quadrics[remap[i0]], &attribute_gradients[remap[i0] * attribute_count], attribute_count, vertex_positions[i1], &vertex_attributes[i1 * attribute_count]);
|
||||
|
|
@ -951,6 +955,7 @@ static void rankEdgeCollapses(Collapse* collapses, size_t collapse_count, const
|
|||
c.v0 = ei <= ej ? i0 : j0;
|
||||
c.v1 = ei <= ej ? i1 : j1;
|
||||
c.error = ei <= ej ? ei : ej;
|
||||
c.distance_error = ei <= ej ? dei : dej;
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -1097,7 +1102,7 @@ static size_t performEdgeCollapses(unsigned int* collapse_remap, unsigned char*
|
|||
triangle_collapses += (vertex_kind[i0] == Kind_Border) ? 1 : 2;
|
||||
edge_collapses++;
|
||||
|
||||
result_error = result_error < c.error ? c.error : result_error;
|
||||
result_error = result_error < c.distance_error ? c.distance_error : result_error;
|
||||
}
|
||||
|
||||
#if TRACE
|
||||
|
|
|
|||
Loading…
Reference in a new issue