CE_OSDPatchEval Namespace Reference

Functions
CE_API bool	buildPatchCoords (const CE_OSDRefinement &topo, UT_Span< const int > faces, UT_Span< const float > u, UT_Span< const float > v, CE_OSDPatchCoords &patch_coords)
CE_API bool	refine (const CE_OSDRefinement &topo, const CE_OSDEvaluator &eval, const cl::Buffer &coarse, CE_FloatArray &refined_data)
CE_API bool	evaluate (const CE_OSDRefinement &topo, const CE_OSDEvaluator &eval, const cl::Buffer &coarse, const CE_OSDPatchCoords &patch_coords, const CE_FloatArray *refined_data, cl::Buffer &out, cl::Buffer *du, cl::Buffer *dv)

Function Documentation

CE_API bool CE_OSDPatchEval::buildPatchCoords	(	const CE_OSDRefinement &	topo,
		UT_Span< const int >	faces,
		UT_Span< const float >	u,
		UT_Span< const float >	v,
		CE_OSDPatchCoords &	patch_coords
	)

Build patch coordinates from ptex face/u/v. Must be called successfully before evaluate(). faces/u/v must have identical lengths. Returns false if any entry is invalid (negative face or no patch hit) and clears patch_coords. For empty input, returns true and clears patch_coords.

CE_API bool CE_OSDPatchEval::evaluate	(	const CE_OSDRefinement &	topo,
		const CE_OSDEvaluator &	eval,
		const cl::Buffer &	coarse,
		const CE_OSDPatchCoords &	patch_coords,
		const CE_FloatArray *	refined_data,
		cl::Buffer &	out,
		cl::Buffer *	du,
		cl::Buffer *	dv
	)

Evaluate coarse data on limit patches. Call buildPatchCoords() before evaluate(). If topo has stencil refinement points (topo.numRefinedVerts() > 0 && topo.hasStencilCL()), refine() must be called successfully before evaluate(). If patch_coords is empty, evaluate() is a no-op and returns true. coarse/out/du/dv are caller-owned. out must be pre-allocated to at least tuple_size * patch_coords.size() floats. du/dv are optional; if provided, they must also be pre-allocated to at least tuple_size * patch_coords.size() floats. refined_data is ignored when no refinement is needed; otherwise it must be non-null and sized to tuple_size * topo.numRefinedVerts(). On failure, returns false.

Examples:

VEX/VEX_Example.C.

CE_API bool CE_OSDPatchEval::refine	(	const CE_OSDRefinement &	topo,
		const CE_OSDEvaluator &	eval,
		const cl::Buffer &	coarse,
		CE_FloatArray &	refined_data
	)

Optional pre-refinement step for patch evaluation inputs. Call before evaluate() when topo has stencil refinement points (topo.numRefinedVerts() > 0 && topo.hasStencilCL()). coarse is caller-owned and must contain at least tuple_size * topo.numCoarseVerts() floats. When refinement is needed, refined_data is caller-owned and must be pre-allocated to tuple_size * topo.numRefinedVerts() floats. When refinement is not needed, returns true and leaves refined_data unchanged. On failure, returns false.