mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2024-11-27 14:00:10 +00:00
10c687ecd5
- [Feature Adaptive GPU Rendering of Catmull-Clark Surfaces](http://research.microsoft.com/en-us/um/people/cloop/tog2012.pdf). - New API architecture : we are planning to lock on to this new framework as the basis for backward compatibility, which we will enforce from Release 1.0 onward. Subsequent releases of OpenSubdiv should not break client code. - DirectX 11 support - and much more...
268 lines
9.6 KiB
C++
268 lines
9.6 KiB
C++
//
|
|
// Copyright (C) Pixar. All rights reserved.
|
|
//
|
|
// This license governs use of the accompanying software. If you
|
|
// use the software, you accept this license. If you do not accept
|
|
// the license, do not use the software.
|
|
//
|
|
// 1. Definitions
|
|
// The terms "reproduce," "reproduction," "derivative works," and
|
|
// "distribution" have the same meaning here as under U.S.
|
|
// copyright law. A "contribution" is the original software, or
|
|
// any additions or changes to the software.
|
|
// A "contributor" is any person or entity that distributes its
|
|
// contribution under this license.
|
|
// "Licensed patents" are a contributor's patent claims that read
|
|
// directly on its contribution.
|
|
//
|
|
// 2. Grant of Rights
|
|
// (A) Copyright Grant- Subject to the terms of this license,
|
|
// including the license conditions and limitations in section 3,
|
|
// each contributor grants you a non-exclusive, worldwide,
|
|
// royalty-free copyright license to reproduce its contribution,
|
|
// prepare derivative works of its contribution, and distribute
|
|
// its contribution or any derivative works that you create.
|
|
// (B) Patent Grant- Subject to the terms of this license,
|
|
// including the license conditions and limitations in section 3,
|
|
// each contributor grants you a non-exclusive, worldwide,
|
|
// royalty-free license under its licensed patents to make, have
|
|
// made, use, sell, offer for sale, import, and/or otherwise
|
|
// dispose of its contribution in the software or derivative works
|
|
// of the contribution in the software.
|
|
//
|
|
// 3. Conditions and Limitations
|
|
// (A) No Trademark License- This license does not grant you
|
|
// rights to use any contributor's name, logo, or trademarks.
|
|
// (B) If you bring a patent claim against any contributor over
|
|
// patents that you claim are infringed by the software, your
|
|
// patent license from such contributor to the software ends
|
|
// automatically.
|
|
// (C) If you distribute any portion of the software, you must
|
|
// retain all copyright, patent, trademark, and attribution
|
|
// notices that are present in the software.
|
|
// (D) If you distribute any portion of the software in source
|
|
// code form, you may do so only under this license by including a
|
|
// complete copy of this license with your distribution. If you
|
|
// distribute any portion of the software in compiled or object
|
|
// code form, you may only do so under a license that complies
|
|
// with this license.
|
|
// (E) The software is licensed "as-is." You bear the risk of
|
|
// using it. The contributors give no express warranties,
|
|
// guarantees or conditions. You may have additional consumer
|
|
// rights under your local laws which this license cannot change.
|
|
// To the extent permitted under your local laws, the contributors
|
|
// exclude the implied warranties of merchantability, fitness for
|
|
// a particular purpose and non-infringement.
|
|
//
|
|
|
|
#include "../osd/cpuKernel.h"
|
|
#include "../osd/vertexDescriptor.h"
|
|
|
|
#include <math.h>
|
|
|
|
namespace OpenSubdiv {
|
|
namespace OPENSUBDIV_VERSION {
|
|
|
|
void OsdCpuComputeFace(
|
|
const OsdVertexDescriptor *vdesc, float * vertex, float * varying,
|
|
const int *F_IT, const int *F_ITa, int offset, int start, int end) {
|
|
|
|
for (int i = start; i < end; i++) {
|
|
int h = F_ITa[2*i];
|
|
int n = F_ITa[2*i+1];
|
|
|
|
float weight = 1.0f/n;
|
|
|
|
// XXX: should use local vertex struct variable instead of
|
|
// accumulating directly into global memory.
|
|
int dstIndex = offset + i;
|
|
vdesc->Clear(vertex, varying, dstIndex);
|
|
|
|
for (int j = 0; j < n; ++j) {
|
|
int index = F_IT[h+j];
|
|
vdesc->AddWithWeight(vertex, dstIndex, index, weight);
|
|
vdesc->AddVaryingWithWeight(varying, dstIndex, index, weight);
|
|
}
|
|
}
|
|
}
|
|
|
|
void OsdCpuComputeEdge(
|
|
const OsdVertexDescriptor *vdesc, float *vertex, float *varying,
|
|
const int *E_IT, const float *E_W, int offset, int start, int end) {
|
|
|
|
for (int i = start; i < end; i++) {
|
|
int eidx0 = E_IT[4*i+0];
|
|
int eidx1 = E_IT[4*i+1];
|
|
int eidx2 = E_IT[4*i+2];
|
|
int eidx3 = E_IT[4*i+3];
|
|
|
|
float vertWeight = E_W[i*2+0];
|
|
|
|
int dstIndex = offset + i;
|
|
vdesc->Clear(vertex, varying, dstIndex);
|
|
|
|
vdesc->AddWithWeight(vertex, dstIndex, eidx0, vertWeight);
|
|
vdesc->AddWithWeight(vertex, dstIndex, eidx1, vertWeight);
|
|
|
|
if (eidx2 != -1) {
|
|
float faceWeight = E_W[i*2+1];
|
|
|
|
vdesc->AddWithWeight(vertex, dstIndex, eidx2, faceWeight);
|
|
vdesc->AddWithWeight(vertex, dstIndex, eidx3, faceWeight);
|
|
}
|
|
|
|
vdesc->AddVaryingWithWeight(varying, dstIndex, eidx0, 0.5f);
|
|
vdesc->AddVaryingWithWeight(varying, dstIndex, eidx1, 0.5f);
|
|
}
|
|
}
|
|
|
|
void OsdCpuComputeVertexA(
|
|
const OsdVertexDescriptor *vdesc, float *vertex, float *varying,
|
|
const int *V_ITa, const float *V_W,
|
|
int offset, int start, int end, int pass) {
|
|
|
|
for (int i = start; i < end; i++) {
|
|
int n = V_ITa[5*i+1];
|
|
int p = V_ITa[5*i+2];
|
|
int eidx0 = V_ITa[5*i+3];
|
|
int eidx1 = V_ITa[5*i+4];
|
|
|
|
float weight = (pass == 1) ? V_W[i] : 1.0f - V_W[i];
|
|
|
|
// In the case of fractional weight, the weight must be inverted since
|
|
// the value is shared with the k_Smooth kernel (statistically the
|
|
// k_Smooth kernel runs much more often than this one)
|
|
if (weight > 0.0f && weight < 1.0f && n > 0)
|
|
weight = 1.0f - weight;
|
|
|
|
int dstIndex = offset + i;
|
|
if (not pass)
|
|
vdesc->Clear(vertex, varying, dstIndex);
|
|
|
|
if (eidx0 == -1 || (pass == 0 && (n == -1))) {
|
|
vdesc->AddWithWeight(vertex, dstIndex, p, weight);
|
|
} else {
|
|
vdesc->AddWithWeight(vertex, dstIndex, p, weight * 0.75f);
|
|
vdesc->AddWithWeight(vertex, dstIndex, eidx0, weight * 0.125f);
|
|
vdesc->AddWithWeight(vertex, dstIndex, eidx1, weight * 0.125f);
|
|
}
|
|
|
|
if (not pass)
|
|
vdesc->AddVaryingWithWeight(varying, dstIndex, p, 1.0f);
|
|
}
|
|
}
|
|
|
|
void OsdCpuComputeVertexB(
|
|
const OsdVertexDescriptor *vdesc, float *vertex, float *varying,
|
|
const int *V_ITa, const int *V_IT, const float *V_W,
|
|
int offset, int start, int end) {
|
|
|
|
for (int i = start; i < end; i++) {
|
|
int h = V_ITa[5*i];
|
|
int n = V_ITa[5*i+1];
|
|
int p = V_ITa[5*i+2];
|
|
|
|
float weight = V_W[i];
|
|
float wp = 1.0f/static_cast<float>(n*n);
|
|
float wv = (n-2.0f) * n * wp;
|
|
|
|
int dstIndex = offset + i;
|
|
vdesc->Clear(vertex, varying, dstIndex);
|
|
|
|
vdesc->AddWithWeight(vertex, dstIndex, p, weight * wv);
|
|
|
|
for (int j = 0; j < n; ++j) {
|
|
vdesc->AddWithWeight(vertex, dstIndex, V_IT[h+j*2], weight * wp);
|
|
vdesc->AddWithWeight(vertex, dstIndex, V_IT[h+j*2+1], weight * wp);
|
|
}
|
|
vdesc->AddVaryingWithWeight(varying, dstIndex, p, 1.0f);
|
|
}
|
|
}
|
|
|
|
void OsdCpuComputeLoopVertexB(
|
|
const OsdVertexDescriptor *vdesc, float *vertex, float *varying,
|
|
const int *V_ITa, const int *V_IT, const float *V_W,
|
|
int offset, int start, int end) {
|
|
|
|
for (int i = start; i < end; i++) {
|
|
int h = V_ITa[5*i];
|
|
int n = V_ITa[5*i+1];
|
|
int p = V_ITa[5*i+2];
|
|
|
|
float weight = V_W[i];
|
|
float wp = 1.0f/static_cast<float>(n);
|
|
float beta = 0.25f * cosf(static_cast<float>(M_PI) * 2.0f * wp) + 0.375f;
|
|
beta = beta * beta;
|
|
beta = (0.625f - beta) * wp;
|
|
|
|
int dstIndex = offset + i;
|
|
vdesc->Clear(vertex, varying, dstIndex);
|
|
|
|
vdesc->AddWithWeight(vertex, dstIndex, p, weight * (1.0f - (beta * n)));
|
|
|
|
for (int j = 0; j < n; ++j)
|
|
vdesc->AddWithWeight(vertex, dstIndex, V_IT[h+j], weight * beta);
|
|
|
|
vdesc->AddVaryingWithWeight(varying, dstIndex, p, 1.0f);
|
|
}
|
|
}
|
|
|
|
void OsdCpuComputeBilinearEdge(
|
|
const OsdVertexDescriptor *vdesc, float *vertex, float *varying,
|
|
const int *E_IT, int offset, int start, int end) {
|
|
|
|
for (int i = start; i < end; i++) {
|
|
int eidx0 = E_IT[2*i+0];
|
|
int eidx1 = E_IT[2*i+1];
|
|
|
|
int dstIndex = offset + i;
|
|
vdesc->Clear(vertex, varying, dstIndex);
|
|
|
|
vdesc->AddWithWeight(vertex, dstIndex, eidx0, 0.5f);
|
|
vdesc->AddWithWeight(vertex, dstIndex, eidx1, 0.5f);
|
|
|
|
vdesc->AddVaryingWithWeight(varying, dstIndex, eidx0, 0.5f);
|
|
vdesc->AddVaryingWithWeight(varying, dstIndex, eidx1, 0.5f);
|
|
}
|
|
}
|
|
|
|
void OsdCpuComputeBilinearVertex(
|
|
const OsdVertexDescriptor *vdesc, float *vertex, float *varying,
|
|
const int *V_ITa, int offset, int start, int end) {
|
|
|
|
for (int i = start; i < end; i++) {
|
|
int p = V_ITa[i];
|
|
|
|
int dstIndex = offset + i;
|
|
vdesc->Clear(vertex, varying, dstIndex);
|
|
|
|
vdesc->AddWithWeight(vertex, dstIndex, p, 1.0f);
|
|
vdesc->AddVaryingWithWeight(varying, dstIndex, p, 1.0f);
|
|
}
|
|
}
|
|
|
|
void OsdCpuEditVertexAdd(
|
|
const OsdVertexDescriptor *vdesc, float *vertex,
|
|
int primVarOffset, int primVarWidth, int vertexCount,
|
|
const int *editIndices, const float *editValues) {
|
|
|
|
for (int i = 0; i < vertexCount; i++) {
|
|
vdesc->ApplyVertexEditAdd(vertex, primVarOffset, primVarWidth,
|
|
editIndices[i], &editValues[i*primVarWidth]);
|
|
}
|
|
}
|
|
|
|
void OsdCpuEditVertexSet(
|
|
const OsdVertexDescriptor *vdesc, float *vertex,
|
|
int primVarOffset, int primVarWidth, int vertexCount,
|
|
const int *editIndices, const float *editValues) {
|
|
|
|
for (int i = 0; i < vertexCount; i++) {
|
|
vdesc->ApplyVertexEditSet(vertex, primVarOffset, primVarWidth,
|
|
editIndices[i], &editValues[i*primVarWidth]);
|
|
}
|
|
}
|
|
|
|
} // end namespace OPENSUBDIV_VERSION
|
|
} // end namespace OpenSubdiv
|