mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
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c399655dcc
Sync'ing the 'dev' branch with the 'feature_3.0dev' branch at commit 68c6d11fc36761ae1a5e6cdc3457be16f2e9704a The branch 'feature_3.0dev' is now locked and preserved for historical purposes.
82 lines
2.6 KiB
Common Lisp
82 lines
2.6 KiB
Common Lisp
//
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// Copyright 2013 Pixar
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//
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// Licensed under the Apache License, Version 2.0 (the "Apache License")
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// with the following modification; you may not use this file except in
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// compliance with the Apache License and the following modification to it:
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// Section 6. Trademarks. is deleted and replaced with:
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//
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// 6. Trademarks. This License does not grant permission to use the trade
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// names, trademarks, service marks, or product names of the Licensor
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// and its affiliates, except as required to comply with Section 4(c) of
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// the License and to reproduce the content of the NOTICE file.
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//
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// You may obtain a copy of the Apache License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the Apache License with the above modification is
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// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the Apache License for the specific
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// language governing permissions and limitations under the Apache License.
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//
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struct Vertex {
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float v[LENGTH];
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};
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static void clear(struct Vertex *vertex) {
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for (int i = 0; i < LENGTH; i++) {
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vertex->v[i] = 0.0f;
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}
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}
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static void addWithWeight(struct Vertex *dst,
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__global float *srcOrigin,
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int index, float weight) {
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__global float *src = srcOrigin + index * STRIDE;
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for (int i = 0; i < LENGTH; ++i) {
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dst->v[i] += src[i] * weight;
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}
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}
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static void writeVertex(__global float *dstOrigin,
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int index,
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struct Vertex *src) {
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__global float *dst = dstOrigin + index * STRIDE;
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for (int i = 0; i < LENGTH; ++i) {
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dst[i] = src->v[i];
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}
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}
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__kernel void computeStencils( __global float * vertexBuffer,
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__global unsigned char * sizes,
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__global int * offsets,
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__global int * indices,
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__global float * weights,
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int batchStart,
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int batchEnd,
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int primvarOffset,
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int numCVs ) {
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int current = get_global_id(0) + batchStart;
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struct Vertex dst;
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clear(&dst);
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int size = (int)sizes[current],
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offset = offsets[current];
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vertexBuffer += primvarOffset;
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for (int i=0; i<size; ++i) {
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addWithWeight(&dst, vertexBuffer, indices[offset+i], weights[offset+i]);
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}
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writeVertex(vertexBuffer, numCVs+current, &dst);
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}
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