meshoptimizer: Sync with upstream commit f4c356d79

https://github.com/zeux/meshoptimizer/commit/f4c356d79fadb99cbf432f7e199d823581b0e19e

1 files changed, 25 insertions, 4 deletions

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.