mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2024-11-26 21:40:07 +00:00
ff34c514f5
This updates the patch basis evaluation functions in Osd
to match recent changes to far/patchBasis.
This also exposes a common facility for dealing with PatchCoord,
PatchArray, and PatchParam. These are exposed as global functions
operating on struct data, since C++ style class methods are not
supported by all of the Osd shader and kernel execution envirionments.
Changes:
- Merged far/patchBasis.cpp to osd/patchBasisCommon{,Types,Eval}.h
- Exposed PatchCoord, PatchArray, and PatchParam to Osd kernels
- exposed OsdEvaluatePatchBasis and OsdEvaluatePatchBasisNormalized
- Updated CPU, TBB, Omp, CUDA, OpenCL, GLSL, HLSL, and Metal evaluators
- Updated glFVarViewer
295 lines
8.1 KiB
GLSL
295 lines
8.1 KiB
GLSL
//
|
|
// Copyright 2013 Pixar
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "Apache License")
|
|
// with the following modification; you may not use this file except in
|
|
// compliance with the Apache License and the following modification to it:
|
|
// Section 6. Trademarks. is deleted and replaced with:
|
|
//
|
|
// 6. Trademarks. This License does not grant permission to use the trade
|
|
// names, trademarks, service marks, or product names of the Licensor
|
|
// and its affiliates, except as required to comply with Section 4(c) of
|
|
// the License and to reproduce the content of the NOTICE file.
|
|
//
|
|
// You may obtain a copy of the Apache License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the Apache License with the above modification is
|
|
// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
|
|
// KIND, either express or implied. See the Apache License for the specific
|
|
// language governing permissions and limitations under the Apache License.
|
|
//
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
uniform samplerBuffer vertexBuffer;
|
|
uniform int srcOffset = 0;
|
|
out float outVertexBuffer[LENGTH];
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
struct Vertex {
|
|
float vertexData[LENGTH];
|
|
};
|
|
|
|
void clear(out Vertex v) {
|
|
for (int i = 0; i < LENGTH; i++) {
|
|
v.vertexData[i] = 0;
|
|
}
|
|
}
|
|
|
|
void addWithWeight(inout Vertex v, Vertex src, float weight) {
|
|
for(int j = 0; j < LENGTH; j++) {
|
|
v.vertexData[j] += weight * src.vertexData[j];
|
|
}
|
|
}
|
|
|
|
Vertex readVertex(int index) {
|
|
Vertex v;
|
|
int vertexIndex = srcOffset + index * SRC_STRIDE;
|
|
for(int j = 0; j < LENGTH; j++) {
|
|
v.vertexData[j] = texelFetch(vertexBuffer, vertexIndex+j).x;
|
|
}
|
|
return v;
|
|
}
|
|
|
|
void writeVertex(Vertex v) {
|
|
for(int i = 0; i < LENGTH; i++) {
|
|
outVertexBuffer[i] = v.vertexData[i];
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
#if defined(OPENSUBDIV_GLSL_XFB_USE_1ST_DERIVATIVES) && \
|
|
defined(OPENSUBDIV_GLSL_XFB_INTERLEAVED_1ST_DERIVATIVE_BUFFERS)
|
|
out float outDeriv1Buffer[2*LENGTH];
|
|
|
|
void writeDu(Vertex v) {
|
|
for(int i = 0; i < LENGTH; i++) {
|
|
outDeriv1Buffer[i] = v.vertexData[i];
|
|
}
|
|
}
|
|
|
|
void writeDv(Vertex v) {
|
|
for(int i = 0; i < LENGTH; i++) {
|
|
outDeriv1Buffer[i+LENGTH] = v.vertexData[i];
|
|
}
|
|
}
|
|
#elif defined(OPENSUBDIV_GLSL_XFB_USE_1ST_DERIVATIVES)
|
|
out float outDuBuffer[LENGTH];
|
|
out float outDvBuffer[LENGTH];
|
|
|
|
void writeDu(Vertex v) {
|
|
for(int i = 0; i < LENGTH; i++) {
|
|
outDuBuffer[i] = v.vertexData[i];
|
|
}
|
|
}
|
|
|
|
void writeDv(Vertex v) {
|
|
for(int i = 0; i < LENGTH; i++) {
|
|
outDvBuffer[i] = v.vertexData[i];
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#if defined(OPENSUBDIV_GLSL_XFB_USE_2ND_DERIVATIVES) && \
|
|
defined(OPENSUBDIV_GLSL_XFB_INTERLEAVED_2ND_DERIVATIVE_BUFFERS)
|
|
out float outDeriv2Buffer[3*LENGTH];
|
|
|
|
void writeDuu(Vertex v) {
|
|
for(int i = 0; i < LENGTH; i++) {
|
|
outDeriv2Buffer[i] = v.vertexData[i];
|
|
}
|
|
}
|
|
|
|
void writeDuv(Vertex v) {
|
|
for(int i = 0; i < LENGTH; i++) {
|
|
outDeriv2Buffer[i+LENGTH] = v.vertexData[i];
|
|
}
|
|
}
|
|
|
|
void writeDvv(Vertex v) {
|
|
for(int i = 0; i < LENGTH; i++) {
|
|
outDeriv2Buffer[i+2*LENGTH] = v.vertexData[i];
|
|
}
|
|
}
|
|
#elif defined(OPENSUBDIV_GLSL_XFB_USE_2ND_DERIVATIVES)
|
|
out float outDuuBuffer[LENGTH];
|
|
out float outDuvBuffer[LENGTH];
|
|
out float outDvvBuffer[LENGTH];
|
|
|
|
void writeDuu(Vertex v) {
|
|
for(int i = 0; i < LENGTH; i++) {
|
|
outDuuBuffer[i] = v.vertexData[i];
|
|
}
|
|
}
|
|
|
|
void writeDuv(Vertex v) {
|
|
for(int i = 0; i < LENGTH; i++) {
|
|
outDuvBuffer[i] = v.vertexData[i];
|
|
}
|
|
}
|
|
|
|
void writeDvv(Vertex v) {
|
|
for(int i = 0; i < LENGTH; i++) {
|
|
outDvvBuffer[i] = v.vertexData[i];
|
|
}
|
|
}
|
|
#endif
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
#if defined(OPENSUBDIV_GLSL_XFB_KERNEL_EVAL_STENCILS)
|
|
|
|
uniform usamplerBuffer sizes;
|
|
uniform isamplerBuffer offsets;
|
|
uniform isamplerBuffer indices;
|
|
uniform samplerBuffer weights;
|
|
|
|
#if defined(OPENSUBDIV_GLSL_XFB_USE_1ST_DERIVATIVES)
|
|
uniform samplerBuffer duWeights;
|
|
uniform samplerBuffer dvWeights;
|
|
#endif
|
|
|
|
#if defined(OPENSUBDIV_GLSL_XFB_USE_2ND_DERIVATIVES)
|
|
uniform samplerBuffer duuWeights;
|
|
uniform samplerBuffer duvWeights;
|
|
uniform samplerBuffer dvvWeights;
|
|
#endif
|
|
|
|
uniform int batchStart = 0;
|
|
uniform int batchEnd = 0;
|
|
|
|
void main() {
|
|
int current = gl_VertexID + batchStart;
|
|
|
|
if (current>=batchEnd) {
|
|
return;
|
|
}
|
|
|
|
Vertex dst, du, dv, duu, duv, dvv;
|
|
clear(dst);
|
|
clear(du);
|
|
clear(dv);
|
|
clear(duu);
|
|
clear(duv);
|
|
clear(dvv);
|
|
|
|
int offset = texelFetch(offsets, current).x;
|
|
uint size = texelFetch(sizes, current).x;
|
|
|
|
for (int stencil=0; stencil<size; ++stencil) {
|
|
int index = texelFetch(indices, offset+stencil).x;
|
|
float weight = texelFetch(weights, offset+stencil).x;
|
|
addWithWeight(dst, readVertex( index ), weight);
|
|
|
|
#if defined(OPENSUBDIV_GLSL_XFB_USE_1ST_DERIVATIVES)
|
|
float duWeight = texelFetch(duWeights, offset+stencil).x;
|
|
float dvWeight = texelFetch(dvWeights, offset+stencil).x;
|
|
addWithWeight(du, readVertex(index), duWeight);
|
|
addWithWeight(dv, readVertex(index), dvWeight);
|
|
#endif
|
|
#if defined(OPENSUBDIV_GLSL_XFB_USE_2ND_DERIVATIVES)
|
|
float duuWeight = texelFetch(duuWeights, offset+stencil).x;
|
|
float duvWeight = texelFetch(duvWeights, offset+stencil).x;
|
|
float dvvWeight = texelFetch(dvvWeights, offset+stencil).x;
|
|
addWithWeight(duu, readVertex(index), duuWeight);
|
|
addWithWeight(duv, readVertex(index), duvWeight);
|
|
addWithWeight(dvv, readVertex(index), dvvWeight);
|
|
#endif
|
|
}
|
|
writeVertex(dst);
|
|
|
|
#if defined(OPENSUBDIV_GLSL_XFB_USE_1ST_DERIVATIVES)
|
|
writeDu(du);
|
|
writeDv(dv);
|
|
#endif
|
|
#if defined(OPENSUBDIV_GLSL_XFB_USE_2ND_DERIVATIVES)
|
|
writeDuu(duu);
|
|
writeDuv(duv);
|
|
writeDvv(dvv);
|
|
#endif
|
|
}
|
|
|
|
#endif
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
#if defined(OPENSUBDIV_GLSL_XFB_KERNEL_EVAL_PATCHES)
|
|
|
|
layout (location = 0) in ivec3 patchHandles;
|
|
layout (location = 1) in vec2 patchCoords;
|
|
|
|
layout (std140) uniform PatchArrays {
|
|
OsdPatchArray patchArrays[2];
|
|
};
|
|
uniform isamplerBuffer patchParamBuffer;
|
|
uniform isamplerBuffer patchIndexBuffer;
|
|
|
|
OsdPatchArray GetPatchArray(int arrayIndex) {
|
|
return patchArrays[arrayIndex];
|
|
}
|
|
|
|
OsdPatchParam GetPatchParam(int patchIndex) {
|
|
ivec3 patchParamBits = texelFetch(patchParamBuffer, patchIndex).xyz;
|
|
return OsdPatchParamInit(patchParamBits.x, patchParamBits.y, patchParamBits.z);
|
|
}
|
|
|
|
void main() {
|
|
int current = gl_VertexID;
|
|
|
|
ivec3 handle = patchHandles;
|
|
int arrayIndex = handle.x;
|
|
int patchIndex = handle.y;
|
|
|
|
vec2 coord = patchCoords;
|
|
|
|
OsdPatchArray array = GetPatchArray(arrayIndex);
|
|
OsdPatchParam param = GetPatchParam(patchIndex);
|
|
|
|
int patchType = OsdPatchParamIsRegular(param) ? array.regDesc : array.desc;
|
|
|
|
float wP[20], wDu[20], wDv[20], wDuu[20], wDuv[20], wDvv[20];
|
|
int nPoints = OsdEvaluatePatchBasis(patchType, param,
|
|
coord.x, coord.y, wP, wDu, wDv, wDuu, wDuv, wDvv);
|
|
|
|
Vertex dst, du, dv, duu, duv, dvv;
|
|
clear(dst);
|
|
clear(du);
|
|
clear(dv);
|
|
clear(duu);
|
|
clear(duv);
|
|
clear(dvv);
|
|
|
|
int indexBase = array.indexBase + array.stride *
|
|
(patchIndex - array.primitiveIdBase);
|
|
|
|
for (int cv = 0; cv < nPoints; ++cv) {
|
|
int index = texelFetch(patchIndexBuffer, indexBase + cv).x;
|
|
addWithWeight(dst, readVertex(index), wP[cv]);
|
|
addWithWeight(du, readVertex(index), wDu[cv]);
|
|
addWithWeight(dv, readVertex(index), wDv[cv]);
|
|
addWithWeight(duu, readVertex(index), wDuu[cv]);
|
|
addWithWeight(duv, readVertex(index), wDuv[cv]);
|
|
addWithWeight(dvv, readVertex(index), wDvv[cv]);
|
|
}
|
|
|
|
writeVertex(dst);
|
|
|
|
#if defined(OPENSUBDIV_GLSL_XFB_USE_1ST_DERIVATIVES)
|
|
writeDu(du);
|
|
writeDv(dv);
|
|
#endif
|
|
#if defined(OPENSUBDIV_GLSL_XFB_USE_2ND_DERIVATIVES)
|
|
writeDuu(duu);
|
|
writeDuv(duv);
|
|
writeDvv(dvv);
|
|
#endif
|
|
}
|
|
|
|
#endif
|
|
|