void CObjectNode::RenderPatch(int nSeedU, int nSeedV, CMultiTexData* pTexData, int nTexData)
{
CObjectNode* pN1;
CObjectNode* pN2;
CObjectNode* pN3;
CObjectNode* pN4;
CNodeData aEdges[4][64];
CNodeData aHLine1[64];
CNodeData aHLine2[64];
CNodeData* pHLine1 = aHLine1;
CNodeData* pHLine2 = aHLine2;
CNodeData* pTmp;
float fU, fV;
int nV, nU, nTex;
CNodeData cE1, cE2, cE3, cE4, cE;
/* calculate edge 1 */
pN2 = pN1 = GetValidLeft();
pN1 = pN1->GetValidUp();
pN3 = pN2->GetValidDown();
pN4 = pN3->GetValidDown();
aEdges[0][0] = pN2->m_cNodeData;
for (nV = 1; nV != nSeedV - 1; nV++) {
fV = (float)nV / (float)(nSeedV - 1);
SInterpolate(aEdges[0][nV], pN1, pN2, pN3, pN4, fV);
}
aEdges[0][nSeedV - 1] = pN3->m_cNodeData;
/* calculate edge 2 */
pN1 = GetValidUp();
pN2 = this;
pN3 = GetValidDown();
pN4 = pN3->GetValidDown();
aEdges[1][0] = pN2->m_cNodeData;
for (nV = 1; nV != nSeedV - 1; nV++) {
fV = (float)nV / (float)(nSeedV - 1);
SInterpolate(aEdges[1][nV], pN1, pN2, pN3, pN4, fV);
}
aEdges[1][nSeedV - 1] = pN3->m_cNodeData;
/* calculate edge 3 */
pN2 = pN1 = GetValidRight();
pN1 = pN1->GetValidUp();
pN3 = pN2->GetValidDown();
pN4 = pN3->GetValidDown();
aEdges[2][0] = pN2->m_cNodeData;
for (nV = 1; nV != nSeedV - 1; nV++) {
fV = (float)nV / (float)(nSeedV - 1);
SInterpolate(aEdges[2][nV], pN1, pN2, pN3, pN4, fV);
}
aEdges[2][nSeedV - 1] = pN3->m_cNodeData;
/* calculate edge 4 */
pN2 = pN2->GetValidRight();
pN1 = pN2->GetValidUp();
pN3 = pN2->GetValidDown();
pN4 = pN3->GetValidDown();
aEdges[3][0] = pN2->m_cNodeData;
for (nV = 1; nV != nSeedV - 1; nV++) {
fV = (float)nV / (float)(nSeedV - 1);
SInterpolate(aEdges[3][nV], pN1, pN2, pN3, pN4, fV);
}
aEdges[3][nSeedV - 1] = pN3->m_cNodeData;
/* make faces */
int nWrap;
if (m_nWarapUV) nWrap = 1;
else
if (GetValidLeft()->m_nWarapUV) nWrap = -1;
else nWrap = 0;
/*
if (nWrap == 0) pHLine1[0] = aEdges[1][0];
else if (nWrap > 0) {
pHLine1[0] = aEdges[1][0];
pHLine1[0].m_cTexel.fU += 1.0f;
}
else {
pHLine1[0] = aEdges[1][0];
}
*/
for (nU = 0; nU != nSeedU ; nU++) {
fU = (float)nU/(float)(nSeedU - 1);
SInterpolate(pHLine1[nU], aEdges[0][0], aEdges[1][0], aEdges[2][0], aEdges[3][0], fU, nWrap);
}
//pHLine1[nSeedU - 1] = aEdges[2][0];
for (nV = 1; nV != nSeedV; nV++)
{
//pHLine2[0] = aEdges[1][nV];
for (nU = 0; nU != nSeedU; nU++) {
fU = (float)nU/(float)(nSeedU - 1);
SInterpolate(pHLine2[nU], aEdges[0][nV], aEdges[1][nV], aEdges[2][nV], aEdges[3][nV], fU, nWrap);
}
//pHLine2[0] = aEdges[2][nV];
/* oki.. we've got here a strip, so render it */
#ifdef GL_VERSION_ES_CM_1_1
glClientActiveTexture(GL_TEXTURE0);
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
#endif
for (nTex = 0; nTex != nTexData; nTex++)
{
if (pTexData[nTex].m_nGLTexName)
{
glBindTexture(GL_TEXTURE_2D, *pTexData[nTex].m_nGLTexName);
#ifndef GL_VERSION_ES_CM_1_1
glBegin(GL_TRIANGLES);
#endif
if (pTexData[nTex].m_nMaterial & 1)
{
for (nU = 0; nU != nSeedU - 1; nU++) {
glFace(pHLine1[nU], pHLine1[nU + 1], pHLine2[nU], pTexData[nTex].m_fAlpha, pTexData[nTex].m_fUShift, pTexData[nTex].m_fVShift);
glFace(pHLine1[nU + 1], pHLine2[nU + 1], pHLine2[nU], pTexData[nTex].m_fAlpha, pTexData[nTex].m_fUShift, pTexData[nTex].m_fVShift);
}
} else
if (pTexData[nTex].m_nMaterial & 2)
{
for (nU = 0; nU != nSeedU - 1; nU++) {
glEnv(pHLine1[nU], pHLine1[nU + 1], pHLine2[nU], pTexData[nTex].m_fAlpha);
glEnv(pHLine1[nU + 1], pHLine2[nU + 1], pHLine2[nU], pTexData[nTex].m_fAlpha);
}
}
#ifndef GL_VERSION_ES_CM_1_1
glEnd();
#endif
}
}
#ifdef GL_VERSION_ES_CM_1_1
glFaceFlush();
glEnvFlush();
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_COLOR_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
#endif
pTmp = pHLine1;
pHLine1 = pHLine2;
pHLine2 = pTmp;
}
}
void CalculateBasisComponents(const MDoubleArray& weights, const BaryCoords& coords,
const MIntArray& triangleVertices, const MPointArray& points,
const MFloatVectorArray& normals, const MIntArray& sampleIds,
double* alignedStorage,
MPoint& origin, MVector& up, MVector& normal) {
// Start with the recreated point and normal using the barycentric coordinates of the hit point.
unsigned int hitIndex = weights.length()-1;
#ifdef __AVX__
__m256d originV = Dot4<MPoint>(coords[0], coords[1], coords[2], 0.0,
points[triangleVertices[0]], points[triangleVertices[1]],
points[triangleVertices[2]], MPoint::origin);
__m256d hitNormalV = Dot4<MVector>(coords[0], coords[1], coords[2], 0.0,
normals[triangleVertices[0]], normals[triangleVertices[1]],
normals[triangleVertices[2]], MVector::zero);
__m256d hitWeightV = _mm256_set1_pd(weights[hitIndex]);
// Create the barycentric point and normal.
__m256d normalV = _mm256_mul_pd(hitNormalV, hitWeightV);
// Then use the weighted adjacent data.
for (unsigned int j = 0; j < hitIndex; j += 4) {
__m256d tempNormal = Dot4<MVector>(weights[j], weights[j+1], weights[j+2], weights[j+3],
normals[sampleIds[j]], normals[sampleIds[j+1]],
normals[sampleIds[j+2]], normals[sampleIds[j+3]]);
normalV = _mm256_add_pd(tempNormal, normalV);
}
_mm256_store_pd(alignedStorage, originV);
origin.x = alignedStorage[0];
origin.y = alignedStorage[1];
origin.z = alignedStorage[2];
_mm256_store_pd(alignedStorage, normalV);
normal.x = alignedStorage[0];
normal.y = alignedStorage[1];
normal.z = alignedStorage[2];
// Calculate the up vector
const MPoint& pt1 = points[triangleVertices[0]];
const MPoint& pt2 = points[triangleVertices[1]];
__m256d p1 = _mm256_set_pd(pt1.w, pt1.z, pt1.y, pt1.x);
__m256d p2 = _mm256_set_pd(pt2.w, pt2.z, pt2.y, pt2.x);
p1 = _mm256_add_pd(p1, p2);
__m256d half = _mm256_set_pd(0.5, 0.5, 0.5, 0.5);
p1 = _mm256_mul_pd(p1, half);
__m256d upV = _mm256_sub_pd(p1, originV);
_mm256_store_pd(alignedStorage, upV);
up.x = alignedStorage[0];
up.y = alignedStorage[1];
up.z = alignedStorage[2];
#else
MVector hitNormal;
// Create the barycentric point and normal.
for (int i = 0; i < 3; ++i) {
origin += points[triangleVertices[i]] * coords[i];
hitNormal += MVector(normals[triangleVertices[i]]) * coords[i];
}
// Use crawl data to calculate normal
normal = hitNormal * weights[hitIndex];
for (unsigned int j = 0; j < hitIndex; j++) {
normal += MVector(normals[sampleIds[j]]) * weights[j];
}
// Calculate the up vector
// The triangle vertices are sorted by decreasing barycentric coordinates so the first two are
// the two closest vertices in the triangle.
up = ((points[triangleVertices[0]] + points[triangleVertices[1]]) * 0.5) - origin;
#endif
normal.normalize();
GetValidUp(weights, points, sampleIds, origin, normal, up);
}
