diff options
Diffstat (limited to 'thirdparty')
| -rw-r--r-- | thirdparty/README.md | 2 | ||||
| -rw-r--r-- | thirdparty/meshoptimizer/clusterizer.cpp | 3 | ||||
| -rw-r--r-- | thirdparty/meshoptimizer/meshoptimizer.h | 29 | ||||
| -rw-r--r-- | thirdparty/meshoptimizer/simplifier.cpp | 20 | ||||
| -rw-r--r-- | thirdparty/meshoptimizer/vertexcodec.cpp | 4 | ||||
| -rw-r--r-- | thirdparty/meshoptimizer/vertexfilter.cpp | 156 |
6 files changed, 178 insertions, 36 deletions
diff --git a/thirdparty/README.md b/thirdparty/README.md index 18da4d6a63..6ebcffb7ae 100644 --- a/thirdparty/README.md +++ b/thirdparty/README.md @@ -333,7 +333,7 @@ File extracted from upstream release tarball: ## meshoptimizer - Upstream: https://github.com/zeux/meshoptimizer -- Version: git (f5d83e879c48f8664783a69b4f50711d27549b66, 2021) +- Version: git (f4c356d79fadb99cbf432f7e199d823581b0e19e, 2021) - License: MIT Files extracted from upstream repository: diff --git a/thirdparty/meshoptimizer/clusterizer.cpp b/thirdparty/meshoptimizer/clusterizer.cpp index f8aad7b49c..b1f7b359c1 100644 --- a/thirdparty/meshoptimizer/clusterizer.cpp +++ b/thirdparty/meshoptimizer/clusterizer.cpp @@ -368,8 +368,7 @@ static size_t kdtreeBuild(size_t offset, KDNode* nodes, size_t node_count, const } // split axis is one where the variance is largest - unsigned int axis = vars[0] >= vars[1] && vars[0] >= vars[2] ? 0 : vars[1] >= vars[2] ? 1 - : 2; + unsigned int axis = vars[0] >= vars[1] && vars[0] >= vars[2] ? 0 : vars[1] >= vars[2] ? 1 : 2; float split = mean[axis]; size_t middle = kdtreePartition(indices, count, points, stride, axis, split); diff --git a/thirdparty/meshoptimizer/meshoptimizer.h b/thirdparty/meshoptimizer/meshoptimizer.h index e44b99ce52..a420eb1098 100644 --- a/thirdparty/meshoptimizer/meshoptimizer.h +++ b/thirdparty/meshoptimizer/meshoptimizer.h @@ -278,9 +278,30 @@ MESHOPTIMIZER_API int meshopt_decodeVertexBuffer(void* destination, size_t verte * meshopt_decodeFilterExp decodes exponential encoding of floating-point data with 8-bit exponent and 24-bit integer mantissa as 2^E*M. * Each 32-bit component is decoded in isolation; stride must be divisible by 4. */ -MESHOPTIMIZER_EXPERIMENTAL void meshopt_decodeFilterOct(void* buffer, size_t vertex_count, size_t vertex_size); -MESHOPTIMIZER_EXPERIMENTAL void meshopt_decodeFilterQuat(void* buffer, size_t vertex_count, size_t vertex_size); -MESHOPTIMIZER_EXPERIMENTAL void meshopt_decodeFilterExp(void* buffer, size_t vertex_count, size_t vertex_size); +MESHOPTIMIZER_EXPERIMENTAL void meshopt_decodeFilterOct(void* buffer, size_t count, size_t stride); +MESHOPTIMIZER_EXPERIMENTAL void meshopt_decodeFilterQuat(void* buffer, size_t count, size_t stride); +MESHOPTIMIZER_EXPERIMENTAL void meshopt_decodeFilterExp(void* buffer, size_t count, size_t stride); + +/** + * Vertex buffer filter encoders + * These functions can be used to encode data in a format that meshopt_decodeFilter can decode + * + * meshopt_encodeFilterOct encodes unit vectors with K-bit (K <= 16) signed X/Y as an output. + * Each component is stored as an 8-bit or 16-bit normalized integer; stride must be equal to 4 or 8. W is preserved as is. + * Input data must contain 4 floats for every vector (count*4 total). + * + * meshopt_encodeFilterQuat encodes unit quaternions with K-bit (4 <= K <= 16) component encoding. + * Each component is stored as an 16-bit integer; stride must be equal to 8. + * Input data must contain 4 floats for every quaternion (count*4 total). + * + * meshopt_encodeFilterExp encodes arbitrary (finite) floating-point data with 8-bit exponent and K-bit integer mantissa (1 <= K <= 24). + * Mantissa is shared between all components of a given vector as defined by stride; stride must be divisible by 4. + * Input data must contain stride/4 floats for every vector (count*stride/4 total). + * When individual (scalar) encoding is desired, simply pass stride=4 and adjust count accordingly. + */ +MESHOPTIMIZER_EXPERIMENTAL void meshopt_encodeFilterOct(void* destination, size_t count, size_t stride, int bits, const float* data); +MESHOPTIMIZER_EXPERIMENTAL void meshopt_encodeFilterQuat(void* destination, size_t count, size_t stride, int bits, const float* data); +MESHOPTIMIZER_EXPERIMENTAL void meshopt_encodeFilterExp(void* destination, size_t count, size_t stride, int bits, const float* data); /** * Experimental: Mesh simplifier @@ -305,7 +326,7 @@ MESHOPTIMIZER_EXPERIMENTAL size_t meshopt_simplifyWithAttributes(unsigned int* d /** * Experimental: Mesh simplifier (sloppy) - * Reduces the number of triangles in the mesh, sacrificing mesh apperance for simplification performance + * Reduces the number of triangles in the mesh, sacrificing mesh appearance for simplification performance * The algorithm doesn't preserve mesh topology but can stop short of the target goal based on target error. * Returns the number of indices after simplification, with destination containing new index data * The resulting index buffer references vertices from the original vertex buffer. diff --git a/thirdparty/meshoptimizer/simplifier.cpp b/thirdparty/meshoptimizer/simplifier.cpp index cf5db4e119..ccc99edb1a 100644 --- a/thirdparty/meshoptimizer/simplifier.cpp +++ b/thirdparty/meshoptimizer/simplifier.cpp @@ -358,7 +358,7 @@ static void classifyVertices(unsigned char* result, unsigned int* loop, unsigned #if TRACE printf("locked: many open edges %d, disconnected seam %d, many seam edges %d, many wedges %d\n", - int(stats[0]), int(stats[1]), int(stats[2]), int(stats[3])); + int(stats[0]), int(stats[1]), int(stats[2]), int(stats[3])); #endif } @@ -1114,8 +1114,8 @@ static size_t performEdgeCollapses(unsigned int* collapse_remap, unsigned char* float error_goal_perfect = edge_collapse_goal < collapse_count ? collapses[collapse_order[edge_collapse_goal]].error : 0.f; printf("removed %d triangles, error %e (goal %e); evaluated %d/%d collapses (done %d, skipped %d, invalid %d)\n", - int(triangle_collapses), sqrtf(result_error), sqrtf(error_goal_perfect), - int(stats[0]), int(collapse_count), int(edge_collapses), int(stats[1]), int(stats[2])); + int(triangle_collapses), sqrtf(result_error), sqrtf(error_goal_perfect), + int(stats[0]), int(collapse_count), int(edge_collapses), int(stats[1]), int(stats[2])); #endif return edge_collapses; @@ -1473,7 +1473,7 @@ size_t meshopt_simplifyWithAttributes(unsigned int* destination, const unsigned kinds[vertex_kind[i]] += remap[i] == i; printf("kinds: manifold %d, border %d, seam %d, complex %d, locked %d\n", - int(kinds[Kind_Manifold]), int(kinds[Kind_Border]), int(kinds[Kind_Seam]), int(kinds[Kind_Complex]), int(kinds[Kind_Locked])); + int(kinds[Kind_Manifold]), int(kinds[Kind_Border]), int(kinds[Kind_Seam]), int(kinds[Kind_Complex]), int(kinds[Kind_Locked])); #endif Vector3* vertex_positions = allocator.allocate<Vector3>(vertex_count); @@ -1649,9 +1649,9 @@ size_t meshopt_simplifySloppy(unsigned int* destination, const unsigned int* ind #if TRACE printf("pass %d (%s): grid size %d, triangles %d, %s\n", - pass, (pass == 0) ? "guess" : (pass <= kInterpolationPasses) ? "lerp" : "binary", - grid_size, int(triangles), - (triangles <= target_index_count / 3) ? "under" : "over"); + pass, (pass == 0) ? "guess" : (pass <= kInterpolationPasses) ? "lerp" : "binary", + grid_size, int(triangles), + (triangles <= target_index_count / 3) ? "under" : "over"); #endif float tip = interpolate(float(target_index_count / 3), float(min_grid), float(min_triangles), float(grid_size), float(triangles), float(max_grid), float(max_triangles)); @@ -1778,9 +1778,9 @@ size_t meshopt_simplifyPoints(unsigned int* destination, const float* vertex_pos #if TRACE printf("pass %d (%s): grid size %d, vertices %d, %s\n", - pass, (pass == 0) ? "guess" : (pass <= kInterpolationPasses) ? "lerp" : "binary", - grid_size, int(vertices), - (vertices <= target_vertex_count) ? "under" : "over"); + pass, (pass == 0) ? "guess" : (pass <= kInterpolationPasses) ? "lerp" : "binary", + grid_size, int(vertices), + (vertices <= target_vertex_count) ? "under" : "over"); #endif float tip = interpolate(float(target_vertex_count), float(min_grid), float(min_vertices), float(grid_size), float(vertices), float(max_grid), float(max_vertices)); diff --git a/thirdparty/meshoptimizer/vertexcodec.cpp b/thirdparty/meshoptimizer/vertexcodec.cpp index 5f3ec204ab..7925ea862c 100644 --- a/thirdparty/meshoptimizer/vertexcodec.cpp +++ b/thirdparty/meshoptimizer/vertexcodec.cpp @@ -77,6 +77,8 @@ #endif #ifdef SIMD_WASM +#undef __DEPRECATED +#pragma clang diagnostic ignored "-Wdeprecated-declarations" #include <wasm_simd128.h> #endif @@ -1028,7 +1030,7 @@ static unsigned int getCpuFeatures() return cpuinfo[2]; } -unsigned int cpuid = getCpuFeatures(); +static unsigned int cpuid = getCpuFeatures(); #endif } // namespace meshopt diff --git a/thirdparty/meshoptimizer/vertexfilter.cpp b/thirdparty/meshoptimizer/vertexfilter.cpp index 39946f46ed..606a280aa9 100644 --- a/thirdparty/meshoptimizer/vertexfilter.cpp +++ b/thirdparty/meshoptimizer/vertexfilter.cpp @@ -52,6 +52,7 @@ #endif #ifdef SIMD_WASM +#undef __DEPRECATED #include <wasm_simd128.h> #endif @@ -160,7 +161,8 @@ static void decodeFilterExp(unsigned int* data, size_t count) #endif #if defined(SIMD_SSE) || defined(SIMD_NEON) || defined(SIMD_WASM) -template <typename T> static void dispatchSimd(void (*process)(T*, size_t), T* data, size_t count, size_t stride) +template <typename T> +static void dispatchSimd(void (*process)(T*, size_t), T* data, size_t count, size_t stride) { assert(stride <= 4); @@ -791,52 +793,170 @@ static void decodeFilterExpSimd(unsigned int* data, size_t count) } // namespace meshopt -void meshopt_decodeFilterOct(void* buffer, size_t vertex_count, size_t vertex_size) +void meshopt_decodeFilterOct(void* buffer, size_t count, size_t stride) { using namespace meshopt; - assert(vertex_size == 4 || vertex_size == 8); + assert(stride == 4 || stride == 8); #if defined(SIMD_SSE) || defined(SIMD_NEON) || defined(SIMD_WASM) - if (vertex_size == 4) - dispatchSimd(decodeFilterOctSimd, static_cast<signed char*>(buffer), vertex_count, 4); + if (stride == 4) + dispatchSimd(decodeFilterOctSimd, static_cast<signed char*>(buffer), count, 4); else - dispatchSimd(decodeFilterOctSimd, static_cast<short*>(buffer), vertex_count, 4); + dispatchSimd(decodeFilterOctSimd, static_cast<short*>(buffer), count, 4); #else - if (vertex_size == 4) - decodeFilterOct(static_cast<signed char*>(buffer), vertex_count); + if (stride == 4) + decodeFilterOct(static_cast<signed char*>(buffer), count); else - decodeFilterOct(static_cast<short*>(buffer), vertex_count); + decodeFilterOct(static_cast<short*>(buffer), count); #endif } -void meshopt_decodeFilterQuat(void* buffer, size_t vertex_count, size_t vertex_size) +void meshopt_decodeFilterQuat(void* buffer, size_t count, size_t stride) { using namespace meshopt; - assert(vertex_size == 8); - (void)vertex_size; + assert(stride == 8); + (void)stride; #if defined(SIMD_SSE) || defined(SIMD_NEON) || defined(SIMD_WASM) - dispatchSimd(decodeFilterQuatSimd, static_cast<short*>(buffer), vertex_count, 4); + dispatchSimd(decodeFilterQuatSimd, static_cast<short*>(buffer), count, 4); #else - decodeFilterQuat(static_cast<short*>(buffer), vertex_count); + decodeFilterQuat(static_cast<short*>(buffer), count); #endif } -void meshopt_decodeFilterExp(void* buffer, size_t vertex_count, size_t vertex_size) +void meshopt_decodeFilterExp(void* buffer, size_t count, size_t stride) { using namespace meshopt; - assert(vertex_size % 4 == 0); + assert(stride > 0 && stride % 4 == 0); #if defined(SIMD_SSE) || defined(SIMD_NEON) || defined(SIMD_WASM) - dispatchSimd(decodeFilterExpSimd, static_cast<unsigned int*>(buffer), vertex_count * (vertex_size / 4), 1); + dispatchSimd(decodeFilterExpSimd, static_cast<unsigned int*>(buffer), count * (stride / 4), 1); #else - decodeFilterExp(static_cast<unsigned int*>(buffer), vertex_count * (vertex_size / 4)); + decodeFilterExp(static_cast<unsigned int*>(buffer), count * (stride / 4)); #endif } +void meshopt_encodeFilterOct(void* destination, size_t count, size_t stride, int bits, const float* data) +{ + assert(stride == 4 || stride == 8); + assert(bits >= 1 && bits <= 16); + + signed char* d8 = static_cast<signed char*>(destination); + short* d16 = static_cast<short*>(destination); + + int bytebits = int(stride * 2); + + for (size_t i = 0; i < count; ++i) + { + const float* n = &data[i * 4]; + + // octahedral encoding of a unit vector + float nx = n[0], ny = n[1], nz = n[2], nw = n[3]; + float nl = fabsf(nx) + fabsf(ny) + fabsf(nz); + float ns = nl == 0.f ? 0.f : 1.f / nl; + + nx *= ns; + ny *= ns; + + float u = (nz >= 0.f) ? nx : (1 - fabsf(ny)) * (nx >= 0.f ? 1.f : -1.f); + float v = (nz >= 0.f) ? ny : (1 - fabsf(nx)) * (ny >= 0.f ? 1.f : -1.f); + + int fu = meshopt_quantizeSnorm(u, bits); + int fv = meshopt_quantizeSnorm(v, bits); + int fo = meshopt_quantizeSnorm(1.f, bits); + int fw = meshopt_quantizeSnorm(nw, bytebits); + + if (stride == 4) + { + d8[i * 4 + 0] = (signed char)(fu); + d8[i * 4 + 1] = (signed char)(fv); + d8[i * 4 + 2] = (signed char)(fo); + d8[i * 4 + 3] = (signed char)(fw); + } + else + { + d16[i * 4 + 0] = short(fu); + d16[i * 4 + 1] = short(fv); + d16[i * 4 + 2] = short(fo); + d16[i * 4 + 3] = short(fw); + } + } +} + +void meshopt_encodeFilterQuat(void* destination_, size_t count, size_t stride, int bits, const float* data) +{ + assert(stride == 8); + assert(bits >= 4 && bits <= 16); + (void)stride; + + short* destination = static_cast<short*>(destination_); + + const float scaler = sqrtf(2.f); + + for (size_t i = 0; i < count; ++i) + { + const float* q = &data[i * 4]; + short* d = &destination[i * 4]; + + // establish maximum quaternion component + int qc = 0; + qc = fabsf(q[1]) > fabsf(q[qc]) ? 1 : qc; + qc = fabsf(q[2]) > fabsf(q[qc]) ? 2 : qc; + qc = fabsf(q[3]) > fabsf(q[qc]) ? 3 : qc; + + // we use double-cover properties to discard the sign + float sign = q[qc] < 0.f ? -1.f : 1.f; + + // note: we always encode a cyclical swizzle to be able to recover the order via rotation + d[0] = short(meshopt_quantizeSnorm(q[(qc + 1) & 3] * scaler * sign, bits)); + d[1] = short(meshopt_quantizeSnorm(q[(qc + 2) & 3] * scaler * sign, bits)); + d[2] = short(meshopt_quantizeSnorm(q[(qc + 3) & 3] * scaler * sign, bits)); + d[3] = short((meshopt_quantizeSnorm(1.f, bits) & ~3) | qc); + } +} + +void meshopt_encodeFilterExp(void* destination_, size_t count, size_t stride, int bits, const float* data) +{ + assert(stride > 0 && stride % 4 == 0); + assert(bits >= 1 && bits <= 24); + + unsigned int* destination = static_cast<unsigned int*>(destination_); + size_t stride_float = stride / sizeof(float); + + for (size_t i = 0; i < count; ++i) + { + const float* v = &data[i * stride_float]; + unsigned int* d = &destination[i * stride_float]; + + // use maximum exponent to encode values; this guarantess that mantissa is [-1, 1] + int exp = -100; + + for (size_t j = 0; j < stride_float; ++j) + { + int e; + frexp(v[j], &e); + + exp = (exp < e) ? e : exp; + } + + // note that we additionally scale the mantissa to make it a K-bit signed integer (K-1 bits for magnitude) + exp -= (bits - 1); + + // compute renormalized rounded mantissa for each component + int mmask = (1 << 24) - 1; + + for (size_t j = 0; j < stride_float; ++j) + { + int m = int(ldexp(v[j], -exp) + (v[j] >= 0 ? 0.5f : -0.5f)); + + d[j] = (m & mmask) | (unsigned(exp) << 24); + } + } +} + #undef SIMD_SSE #undef SIMD_NEON #undef SIMD_WASM |