mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2024-12-05 09:11:04 +00:00
5ff9edf4f9
Note: this round fixes clang / gcc -Wetra warnings. More fixing remains for icc -w3 errors.
1331 lines
43 KiB
C++
1331 lines
43 KiB
C++
//
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// Copyright 2014 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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#if defined(__APPLE__)
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#if defined(OSD_USES_GLEW)
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#include <GL/glew.h>
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#else
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#include <OpenGL/gl3.h>
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#endif
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#define GLFW_INCLUDE_GL3
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#define GLFW_NO_GLU
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#else
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#include <stdlib.h>
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#include <GL/glew.h>
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#if defined(WIN32)
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#include <GL/wglew.h>
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#endif
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#endif
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#if defined(GLFW_VERSION_3)
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#include <GLFW/glfw3.h>
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GLFWwindow* g_window=0;
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GLFWmonitor* g_primary=0;
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#else
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#include <GL/glfw.h>
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#endif
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#include <far/mesh.h>
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#include <far/meshFactory.h>
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#include <osd/error.h>
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#include <osd/vertex.h>
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#include <osd/glDrawContext.h>
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#include <osd/glDrawRegistry.h>
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#include <osd/glMesh.h>
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#include <osd/cpuGLVertexBuffer.h>
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#include <osd/cpuComputeContext.h>
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#include <osd/cpuComputeController.h>
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#include <osdutil/patchPartitioner.h>
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OpenSubdiv::OsdCpuComputeController *g_cpuComputeController = NULL;
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template <class VERTEX_BUFFER, class COMPUTE_CONTROLLER>
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class PartitionedMesh : public OpenSubdiv::OsdMesh<VERTEX_BUFFER, COMPUTE_CONTROLLER, OpenSubdiv::OsdGLDrawContext>
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{
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public:
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typedef OpenSubdiv::OsdMesh<VERTEX_BUFFER, COMPUTE_CONTROLLER, OpenSubdiv::OsdGLDrawContext> Inherited;
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typedef typename Inherited::VertexBuffer VertexBuffer;
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typedef typename Inherited::ComputeController ComputeController;
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typedef typename Inherited::ComputeContext ComputeContext;
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typedef typename Inherited::DrawContext DrawContext;
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static PartitionedMesh*
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Create(ComputeController *computeController, OpenSubdiv::FarMesh<OpenSubdiv::OsdVertex> *farMesh,
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std::vector<int> const &partitionPerFace) {
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OpenSubdiv::OsdUtilPatchPartitioner partitioner(farMesh->GetPatchTables(), partitionPerFace);
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int numVertices = farMesh->GetNumVertices();
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VertexBuffer* vertexBuffer = VertexBuffer::Create(3, numVertices);
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ComputeContext* computeContext = ComputeContext::Create(
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farMesh->GetSubdivisionTables(), farMesh->GetVertexEditTables());
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DrawContext* drawContext = DrawContext::Create(&partitioner.GetPatchTables(), 3, false);
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PartitionedMesh* mesh = new PartitionedMesh(computeController, farMesh, vertexBuffer,
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NULL, computeContext, drawContext);
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// convert farpatch to osdpatch
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int maxMaterial = partitioner.GetNumPartitions();
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int maxValence = farMesh->GetPatchTables()->GetMaxValence();
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mesh->_partitionedOsdPatchArrays.resize(maxMaterial);
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for (int i = 0; i < maxMaterial; ++i) {
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OpenSubdiv::OsdDrawContext::ConvertPatchArrays(partitioner.GetPatchArrays(i),
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mesh->_partitionedOsdPatchArrays[i],
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maxValence, 3);
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}
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return mesh;
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}
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int GetNumPartitions() const {
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return (int)_partitionedOsdPatchArrays.size();
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}
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OpenSubdiv::OsdDrawContext::PatchArrayVector const & GetPatchArrays(int partition) const {
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return _partitionedOsdPatchArrays[partition];
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}
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private:
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PartitionedMesh(ComputeController * computeController,
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OpenSubdiv::FarMesh<OpenSubdiv::OsdVertex> * fmesh,
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VertexBuffer * vertexBuffer,
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VertexBuffer * varyingBuffer,
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ComputeContext * computeContext,
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DrawContext * drawContext) :
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Inherited(computeController, fmesh, vertexBuffer, varyingBuffer, computeContext, drawContext)
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{
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}
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std::vector<OpenSubdiv::OsdDrawContext::PatchArrayVector> _partitionedOsdPatchArrays;
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};
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PartitionedMesh<OpenSubdiv::OsdCpuGLVertexBuffer, OpenSubdiv::OsdCpuComputeController> *g_mesh = NULL;
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#include <common/shape_utils.h>
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#include "../common/stopwatch.h"
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#include "../common/simple_math.h"
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#include "../common/gl_hud.h"
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static const char *shaderSource =
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#include "shader.gen.h"
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;
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#include <cfloat>
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#include <vector>
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#include <fstream>
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#include <sstream>
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typedef OpenSubdiv::HbrMesh<OpenSubdiv::OsdVertex> OsdHbrMesh;
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typedef OpenSubdiv::HbrVertex<OpenSubdiv::OsdVertex> OsdHbrVertex;
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typedef OpenSubdiv::HbrFace<OpenSubdiv::OsdVertex> OsdHbrFace;
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typedef OpenSubdiv::HbrHalfedge<OpenSubdiv::OsdVertex> OsdHbrHalfedge;
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enum DisplayStyle { kWire = 0,
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kShaded,
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kWireShaded };
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enum HudCheckBox { kHUD_CB_PARTITIONING };
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struct SimpleShape {
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std::string name;
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Scheme scheme;
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std::string data;
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SimpleShape() { }
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SimpleShape( std::string const & idata, char const * iname, Scheme ischeme )
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: name(iname), scheme(ischeme), data(idata) { }
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};
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std::vector<SimpleShape> g_defaultShapes;
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int g_currentShape = 0;
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// GUI variables
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int g_displayStyle = kWireShaded,
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g_adaptive = 0,
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g_mbutton[3] = {0, 0, 0},
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g_partitioning = 1,
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g_running = 1;
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float g_rotate[2] = {0, 0},
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g_dolly = 5,
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g_pan[2] = {0, 0},
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g_center[3] = {0, 0, 0},
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g_size = 0;
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int g_prev_x = 0,
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g_prev_y = 0;
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int g_width = 1024,
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g_height = 1024;
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GLhud g_hud;
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// performance
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float g_cpuTime = 0;
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float g_gpuTime = 0;
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Stopwatch g_fpsTimer;
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// geometry
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std::vector<float> g_orgPositions,
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g_positions;
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Scheme g_scheme;
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int g_level = 2;
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int g_tessLevel = 1;
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int g_tessLevelMin = 1;
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GLuint g_transformUB = 0,
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g_transformBinding = 0,
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g_tessellationUB = 0,
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g_tessellationBinding = 0,
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g_lightingUB = 0,
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g_lightingBinding = 0;
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struct Transform {
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float ModelViewMatrix[16];
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float ProjectionMatrix[16];
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float ModelViewProjectionMatrix[16];
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} g_transformData;
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GLuint g_queries[2] = {0, 0};
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GLuint g_vao = 0;
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static void
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checkGLErrors(std::string const & where = "")
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{
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GLuint err;
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while ((err = glGetError()) != GL_NO_ERROR) {
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std::cerr << "GL error: "
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<< (where.empty() ? "" : where + " ")
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<< err << "\n";
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}
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}
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//------------------------------------------------------------------------------
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static void
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initializeShapes( ) {
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#include <shapes/catmark_cube_corner0.h>
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g_defaultShapes.push_back(SimpleShape(catmark_cube_corner0, "catmark_cube_corner0", kCatmark));
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#include <shapes/catmark_cube_corner1.h>
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g_defaultShapes.push_back(SimpleShape(catmark_cube_corner1, "catmark_cube_corner1", kCatmark));
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#include <shapes/catmark_cube_corner2.h>
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g_defaultShapes.push_back(SimpleShape(catmark_cube_corner2, "catmark_cube_corner2", kCatmark));
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#include <shapes/catmark_cube_corner3.h>
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g_defaultShapes.push_back(SimpleShape(catmark_cube_corner3, "catmark_cube_corner3", kCatmark));
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#include <shapes/catmark_cube_corner4.h>
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g_defaultShapes.push_back(SimpleShape(catmark_cube_corner4, "catmark_cube_corner4", kCatmark));
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#include <shapes/catmark_cube_creases0.h>
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g_defaultShapes.push_back(SimpleShape(catmark_cube_creases0, "catmark_cube_creases0", kCatmark));
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#include <shapes/catmark_cube_creases1.h>
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g_defaultShapes.push_back(SimpleShape(catmark_cube_creases1, "catmark_cube_creases1", kCatmark));
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#include <shapes/catmark_cube.h>
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g_defaultShapes.push_back(SimpleShape(catmark_cube, "catmark_cube", kCatmark));
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#include <shapes/catmark_dart_edgecorner.h>
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g_defaultShapes.push_back(SimpleShape(catmark_dart_edgecorner, "catmark_dart_edgecorner", kCatmark));
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#include <shapes/catmark_dart_edgeonly.h>
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g_defaultShapes.push_back(SimpleShape(catmark_dart_edgeonly, "catmark_dart_edgeonly", kCatmark));
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#include <shapes/catmark_edgecorner.h>
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g_defaultShapes.push_back(SimpleShape(catmark_edgecorner ,"catmark_edgecorner", kCatmark));
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#include <shapes/catmark_edgeonly.h>
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g_defaultShapes.push_back(SimpleShape(catmark_edgeonly, "catmark_edgeonly", kCatmark));
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#include <shapes/catmark_chaikin0.h>
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g_defaultShapes.push_back(SimpleShape(catmark_chaikin0, "catmark_chaikin0", kCatmark));
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#include <shapes/catmark_chaikin1.h>
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g_defaultShapes.push_back(SimpleShape(catmark_chaikin1, "catmark_chaikin1", kCatmark));
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#include <shapes/catmark_fan.h>
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g_defaultShapes.push_back(SimpleShape(catmark_fan, "catmark_fan", kCatmark));
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#include <shapes/catmark_gregory_test1.h>
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g_defaultShapes.push_back(SimpleShape(catmark_gregory_test1, "catmark_gregory_test1", kCatmark));
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#include <shapes/catmark_gregory_test2.h>
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g_defaultShapes.push_back(SimpleShape(catmark_gregory_test2, "catmark_gregory_test2", kCatmark));
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#include <shapes/catmark_gregory_test3.h>
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g_defaultShapes.push_back(SimpleShape(catmark_gregory_test3, "catmark_gregory_test3", kCatmark));
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#include <shapes/catmark_gregory_test4.h>
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g_defaultShapes.push_back(SimpleShape(catmark_gregory_test4, "catmark_gregory_test4", kCatmark));
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#include <shapes/catmark_hole_test1.h>
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g_defaultShapes.push_back(SimpleShape(catmark_hole_test1, "catmark_hole_test1", kCatmark));
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#include <shapes/catmark_hole_test2.h>
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g_defaultShapes.push_back(SimpleShape(catmark_hole_test2, "catmark_hole_test2", kCatmark));
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#include <shapes/catmark_pyramid_creases0.h>
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g_defaultShapes.push_back(SimpleShape(catmark_pyramid_creases0, "catmark_pyramid_creases0", kCatmark));
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#include <shapes/catmark_pyramid_creases1.h>
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g_defaultShapes.push_back(SimpleShape(catmark_pyramid_creases1, "catmark_pyramid_creases1", kCatmark));
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#include <shapes/catmark_pyramid.h>
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g_defaultShapes.push_back(SimpleShape(catmark_pyramid, "catmark_pyramid", kCatmark));
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#include <shapes/catmark_tent_creases0.h>
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g_defaultShapes.push_back(SimpleShape(catmark_tent_creases0, "catmark_tent_creases0", kCatmark));
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#include <shapes/catmark_tent_creases1.h>
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g_defaultShapes.push_back(SimpleShape(catmark_tent_creases1, "catmark_tent_creases1", kCatmark));
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#include <shapes/catmark_tent.h>
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g_defaultShapes.push_back(SimpleShape(catmark_tent, "catmark_tent", kCatmark));
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#include <shapes/catmark_torus.h>
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g_defaultShapes.push_back(SimpleShape(catmark_torus, "catmark_torus", kCatmark));
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#include <shapes/catmark_torus_creases0.h>
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g_defaultShapes.push_back(SimpleShape(catmark_torus_creases0, "catmark_torus_creases0", kCatmark));
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#include <shapes/catmark_square_hedit0.h>
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g_defaultShapes.push_back(SimpleShape(catmark_square_hedit0, "catmark_square_hedit0", kCatmark));
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#include <shapes/catmark_square_hedit1.h>
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g_defaultShapes.push_back(SimpleShape(catmark_square_hedit1, "catmark_square_hedit1", kCatmark));
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#include <shapes/catmark_square_hedit2.h>
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g_defaultShapes.push_back(SimpleShape(catmark_square_hedit2, "catmark_square_hedit2", kCatmark));
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#include <shapes/catmark_square_hedit3.h>
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g_defaultShapes.push_back(SimpleShape(catmark_square_hedit3, "catmark_square_hedit3", kCatmark));
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#include <shapes/catmark_square_hedit4.h>
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g_defaultShapes.push_back(SimpleShape(catmark_square_hedit4, "catmark_square_hedit4", kCatmark));
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#include <shapes/catmark_bishop.h>
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g_defaultShapes.push_back(SimpleShape(catmark_bishop, "catmark_bishop", kCatmark));
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#include <shapes/catmark_car.h>
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g_defaultShapes.push_back(SimpleShape(catmark_car, "catmark_car", kCatmark));
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#include <shapes/catmark_helmet.h>
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g_defaultShapes.push_back(SimpleShape(catmark_helmet, "catmark_helmet", kCatmark));
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#include <shapes/catmark_pawn.h>
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g_defaultShapes.push_back(SimpleShape(catmark_pawn, "catmark_pawn", kCatmark));
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#include <shapes/catmark_rook.h>
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g_defaultShapes.push_back(SimpleShape(catmark_rook, "catmark_rook", kCatmark));
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#include <shapes/bilinear_cube.h>
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g_defaultShapes.push_back(SimpleShape(bilinear_cube, "bilinear_cube", kBilinear));
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#include <shapes/loop_cube_creases0.h>
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g_defaultShapes.push_back(SimpleShape(loop_cube_creases0, "loop_cube_creases0", kLoop));
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#include <shapes/loop_cube_creases1.h>
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g_defaultShapes.push_back(SimpleShape(loop_cube_creases1, "loop_cube_creases1", kLoop));
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#include <shapes/loop_cube.h>
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g_defaultShapes.push_back(SimpleShape(loop_cube, "loop_cube", kLoop));
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#include <shapes/loop_icosahedron.h>
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g_defaultShapes.push_back(SimpleShape(loop_icosahedron, "loop_icosahedron", kLoop));
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#include <shapes/loop_saddle_edgecorner.h>
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g_defaultShapes.push_back(SimpleShape(loop_saddle_edgecorner, "loop_saddle_edgecorner", kLoop));
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#include <shapes/loop_saddle_edgeonly.h>
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g_defaultShapes.push_back(SimpleShape(loop_saddle_edgeonly, "loop_saddle_edgeonly", kLoop));
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#include <shapes/loop_triangle_edgecorner.h>
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g_defaultShapes.push_back(SimpleShape(loop_triangle_edgecorner, "loop_triangle_edgecorner", kLoop));
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#include <shapes/loop_triangle_edgeonly.h>
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g_defaultShapes.push_back(SimpleShape(loop_triangle_edgeonly, "loop_triangle_edgeonly", kLoop));
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#include <shapes/loop_chaikin0.h>
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g_defaultShapes.push_back(SimpleShape(loop_chaikin0, "loop_chaikin0", kLoop));
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#include <shapes/loop_chaikin1.h>
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g_defaultShapes.push_back(SimpleShape(loop_chaikin1, "loop_chaikin1", kLoop));
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}
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//------------------------------------------------------------------------------
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static void
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updateGeom() {
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int nverts = (int)g_orgPositions.size() / 3;
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std::vector<float> vertex;
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vertex.reserve(nverts*3);
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const float *p = &g_orgPositions[0];
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for (int i = 0; i < nverts; ++i) {
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g_positions[i*3+0] = p[0];
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g_positions[i*3+1] = p[1];
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g_positions[i*3+2] = p[2];
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p += 3;
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}
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p = &g_orgPositions[0];
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const float *pp = &g_positions[0];
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for (int i = 0; i < nverts; ++i) {
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vertex.push_back(pp[0]);
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vertex.push_back(pp[1]);
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vertex.push_back(pp[2]);
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pp += 3;
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}
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g_mesh->UpdateVertexBuffer(&vertex[0], 0, nverts);
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Stopwatch s;
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s.Start();
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g_mesh->Refine();
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}
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//------------------------------------------------------------------------------
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static void
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createOsdMesh( const std::string &shape, int level, Scheme scheme=kCatmark ) {
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checkGLErrors("create osd enter");
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// generate Hbr representation from "obj" description
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OsdHbrMesh * hmesh = simpleHbr<OpenSubdiv::OsdVertex>(shape.c_str(), scheme, g_orgPositions);
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// material assignment
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std::vector<int> idsOnPtexFaces;
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{
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int numFaces = hmesh->GetNumCoarseFaces();
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// first, assign material ID to each coarse face
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std::vector<int> idsOnCoarseFaces;
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for (int i = 0; i < numFaces; ++i) {
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int materialID = i%6;
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idsOnCoarseFaces.push_back(materialID);
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}
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|
|
|
// create ptex index to coarse face index mapping
|
|
OsdHbrFace *lastFace = hmesh->GetFace(numFaces-1);
|
|
int numPtexFaces = lastFace->GetPtexIndex();
|
|
numPtexFaces += (hmesh->GetSubdivision()->FaceIsExtraordinary(hmesh, lastFace) ?
|
|
lastFace->GetNumVertices() : 1);
|
|
|
|
// XXX: duped logic to simpleHbr
|
|
std::vector<int> ptexIndexToFaceMapping(numPtexFaces);
|
|
int ptexIndex = 0;
|
|
for (int i = 0; i < numFaces; ++i) {
|
|
OsdHbrFace * f = hmesh->GetFace(i);
|
|
ptexIndexToFaceMapping[ptexIndex++] = i;
|
|
int numVerts = f->GetNumVertices();
|
|
if ( (scheme==kCatmark or scheme==kBilinear) and numVerts != 4 ) {
|
|
for (int j = 0; j < numVerts-1; ++j) {
|
|
ptexIndexToFaceMapping[ptexIndex++] = i;
|
|
}
|
|
}
|
|
}
|
|
assert((int)ptexIndexToFaceMapping.size() == numPtexFaces);
|
|
|
|
// convert ID array from coarse face index space to ptex index space
|
|
for (int i = 0; i < numPtexFaces; ++i) {
|
|
idsOnPtexFaces.push_back(idsOnCoarseFaces[ptexIndexToFaceMapping[i]]);
|
|
}
|
|
}
|
|
|
|
// Adaptive refinement currently supported only for catmull-clark scheme
|
|
g_scheme = scheme;
|
|
bool doAdaptive = (g_adaptive!=0 and g_scheme==kCatmark);
|
|
|
|
// create farmesh
|
|
OpenSubdiv::FarMeshFactory<OpenSubdiv::OsdVertex> meshFactory(hmesh, level, doAdaptive);
|
|
OpenSubdiv::FarMesh<OpenSubdiv::OsdVertex> *farMesh = meshFactory.Create();
|
|
|
|
// create partitioned patcharray
|
|
delete g_mesh;
|
|
g_mesh = PartitionedMesh<OpenSubdiv::OsdCpuGLVertexBuffer, OpenSubdiv::OsdCpuComputeController>::Create(g_cpuComputeController, farMesh, idsOnPtexFaces);
|
|
|
|
// Hbr mesh can be deleted
|
|
delete hmesh;
|
|
|
|
// compute model bounding
|
|
float min[3] = { FLT_MAX, FLT_MAX, FLT_MAX};
|
|
float max[3] = {-FLT_MAX, -FLT_MAX, -FLT_MAX};
|
|
for (size_t i=0; i <g_orgPositions.size()/3; ++i) {
|
|
for(int j=0; j<3; ++j) {
|
|
float v = g_orgPositions[i*3+j];
|
|
min[j] = std::min(min[j], v);
|
|
max[j] = std::max(max[j], v);
|
|
}
|
|
}
|
|
for (int j=0; j<3; ++j) {
|
|
g_center[j] = (min[j] + max[j]) * 0.5f;
|
|
g_size += (max[j]-min[j])*(max[j]-min[j]);
|
|
}
|
|
g_size = sqrtf(g_size);
|
|
|
|
g_positions.resize(g_orgPositions.size(),0.0f);
|
|
|
|
g_tessLevelMin = 1;
|
|
|
|
g_tessLevel = std::max(g_tessLevel,g_tessLevelMin);
|
|
|
|
updateGeom();
|
|
|
|
// -------- VAO
|
|
glBindVertexArray(g_vao);
|
|
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_mesh->GetDrawContext()->GetPatchIndexBuffer());
|
|
glBindBuffer(GL_ARRAY_BUFFER, g_mesh->BindVertexBuffer());
|
|
|
|
glEnableVertexAttribArray(0);
|
|
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof (GLfloat) * 3, 0);
|
|
|
|
glBindBuffer(GL_ARRAY_BUFFER, 0);
|
|
glBindVertexArray(0);
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
static void
|
|
fitFrame() {
|
|
|
|
g_pan[0] = g_pan[1] = 0;
|
|
g_dolly = g_size;
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
union Effect {
|
|
Effect(int displayStyle_) : value(0) {
|
|
displayStyle = displayStyle_;
|
|
}
|
|
|
|
struct {
|
|
unsigned int displayStyle:3;
|
|
};
|
|
int value;
|
|
|
|
bool operator < (const Effect &e) const {
|
|
return value < e.value;
|
|
}
|
|
};
|
|
|
|
typedef std::pair<OpenSubdiv::OsdDrawContext::PatchDescriptor, Effect> EffectDesc;
|
|
|
|
class EffectDrawRegistry : public OpenSubdiv::OsdGLDrawRegistry<EffectDesc> {
|
|
|
|
protected:
|
|
virtual ConfigType *
|
|
_CreateDrawConfig(DescType const & desc, SourceConfigType const * sconfig);
|
|
|
|
virtual SourceConfigType *
|
|
_CreateDrawSourceConfig(DescType const & desc);
|
|
};
|
|
|
|
EffectDrawRegistry::SourceConfigType *
|
|
EffectDrawRegistry::_CreateDrawSourceConfig(DescType const & desc)
|
|
{
|
|
Effect effect = desc.second;
|
|
|
|
SourceConfigType * sconfig =
|
|
BaseRegistry::_CreateDrawSourceConfig(desc.first);
|
|
|
|
assert(sconfig);
|
|
|
|
#if defined(GL_ARB_tessellation_shader) || defined(GL_VERSION_4_0)
|
|
const char *glslVersion = "#version 400\n";
|
|
#else
|
|
const char *glslVersion = "#version 330\n";
|
|
#endif
|
|
|
|
if (desc.first.GetType() == OpenSubdiv::FarPatchTables::QUADS or
|
|
desc.first.GetType() == OpenSubdiv::FarPatchTables::TRIANGLES) {
|
|
sconfig->vertexShader.source = shaderSource;
|
|
sconfig->vertexShader.version = glslVersion;
|
|
sconfig->vertexShader.AddDefine("VERTEX_SHADER");
|
|
} else {
|
|
sconfig->geometryShader.AddDefine("SMOOTH_NORMALS");
|
|
}
|
|
|
|
sconfig->geometryShader.source = shaderSource;
|
|
sconfig->geometryShader.version = glslVersion;
|
|
sconfig->geometryShader.AddDefine("GEOMETRY_SHADER");
|
|
|
|
sconfig->fragmentShader.source = shaderSource;
|
|
sconfig->fragmentShader.version = glslVersion;
|
|
sconfig->fragmentShader.AddDefine("FRAGMENT_SHADER");
|
|
|
|
if (desc.first.GetType() == OpenSubdiv::FarPatchTables::QUADS) {
|
|
// uniform catmark, bilinear
|
|
sconfig->geometryShader.AddDefine("PRIM_QUAD");
|
|
sconfig->fragmentShader.AddDefine("PRIM_QUAD");
|
|
sconfig->commonShader.AddDefine("UNIFORM_SUBDIVISION");
|
|
} else if (desc.first.GetType() == OpenSubdiv::FarPatchTables::TRIANGLES) {
|
|
// uniform loop
|
|
sconfig->geometryShader.AddDefine("PRIM_TRI");
|
|
sconfig->fragmentShader.AddDefine("PRIM_TRI");
|
|
sconfig->commonShader.AddDefine("LOOP");
|
|
sconfig->commonShader.AddDefine("UNIFORM_SUBDIVISION");
|
|
} else {
|
|
// adaptive
|
|
sconfig->vertexShader.source = shaderSource + sconfig->vertexShader.source;
|
|
sconfig->tessControlShader.source = shaderSource + sconfig->tessControlShader.source;
|
|
sconfig->tessEvalShader.source = shaderSource + sconfig->tessEvalShader.source;
|
|
|
|
sconfig->geometryShader.AddDefine("PRIM_TRI");
|
|
sconfig->fragmentShader.AddDefine("PRIM_TRI");
|
|
}
|
|
|
|
switch (effect.displayStyle) {
|
|
case kWire:
|
|
sconfig->commonShader.AddDefine("GEOMETRY_OUT_WIRE");
|
|
break;
|
|
case kWireShaded:
|
|
sconfig->commonShader.AddDefine("GEOMETRY_OUT_LINE");
|
|
break;
|
|
case kShaded:
|
|
sconfig->commonShader.AddDefine("GEOMETRY_OUT_FILL");
|
|
break;
|
|
}
|
|
|
|
return sconfig;
|
|
}
|
|
|
|
EffectDrawRegistry::ConfigType *
|
|
EffectDrawRegistry::_CreateDrawConfig(
|
|
DescType const & desc,
|
|
SourceConfigType const * sconfig)
|
|
{
|
|
ConfigType * config = BaseRegistry::_CreateDrawConfig(desc.first, sconfig);
|
|
assert(config);
|
|
|
|
GLuint uboIndex;
|
|
|
|
// XXXdyu can use layout(binding=) with GLSL 4.20 and beyond
|
|
g_transformBinding = 0;
|
|
uboIndex = glGetUniformBlockIndex(config->program, "Transform");
|
|
if (uboIndex != GL_INVALID_INDEX)
|
|
glUniformBlockBinding(config->program, uboIndex, g_transformBinding);
|
|
|
|
g_tessellationBinding = 1;
|
|
uboIndex = glGetUniformBlockIndex(config->program, "Tessellation");
|
|
if (uboIndex != GL_INVALID_INDEX)
|
|
glUniformBlockBinding(config->program, uboIndex, g_tessellationBinding);
|
|
|
|
g_lightingBinding = 2;
|
|
uboIndex = glGetUniformBlockIndex(config->program, "Lighting");
|
|
if (uboIndex != GL_INVALID_INDEX)
|
|
glUniformBlockBinding(config->program, uboIndex, g_lightingBinding);
|
|
|
|
GLint loc;
|
|
#if not defined(GL_ARB_separate_shader_objects) || defined(GL_VERSION_4_1)
|
|
glUseProgram(config->program);
|
|
if ((loc = glGetUniformLocation(config->program, "OsdVertexBuffer")) != -1) {
|
|
glUniform1i(loc, 0); // GL_TEXTURE0
|
|
}
|
|
if ((loc = glGetUniformLocation(config->program, "OsdValenceBuffer")) != -1) {
|
|
glUniform1i(loc, 1); // GL_TEXTURE1
|
|
}
|
|
if ((loc = glGetUniformLocation(config->program, "OsdQuadOffsetBuffer")) != -1) {
|
|
glUniform1i(loc, 2); // GL_TEXTURE2
|
|
}
|
|
if ((loc = glGetUniformLocation(config->program, "OsdPatchParamBuffer")) != -1) {
|
|
glUniform1i(loc, 3); // GL_TEXTURE3
|
|
}
|
|
if ((loc = glGetUniformLocation(config->program, "OsdFVarDataBuffer")) != -1) {
|
|
glUniform1i(loc, 4); // GL_TEXTURE4
|
|
}
|
|
#else
|
|
if ((loc = glGetUniformLocation(config->program, "OsdVertexBuffer")) != -1) {
|
|
glProgramUniform1i(config->program, loc, 0); // GL_TEXTURE0
|
|
}
|
|
if ((loc = glGetUniformLocation(config->program, "OsdValenceBuffer")) != -1) {
|
|
glProgramUniform1i(config->program, loc, 1); // GL_TEXTURE1
|
|
}
|
|
if ((loc = glGetUniformLocation(config->program, "OsdQuadOffsetBuffer")) != -1) {
|
|
glProgramUniform1i(config->program, loc, 2); // GL_TEXTURE2
|
|
}
|
|
if ((loc = glGetUniformLocation(config->program, "OsdPatchParamBuffer")) != -1) {
|
|
glProgramUniform1i(config->program, loc, 3); // GL_TEXTURE3
|
|
}
|
|
if ((loc = glGetUniformLocation(config->program, "OsdFVarDataBuffer")) != -1) {
|
|
glProgramUniform1i(config->program, loc, 4); // GL_TEXTURE4
|
|
}
|
|
#endif
|
|
|
|
return config;
|
|
}
|
|
|
|
EffectDrawRegistry effectRegistry;
|
|
|
|
static Effect
|
|
GetEffect()
|
|
{
|
|
return Effect(g_displayStyle);
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
static GLuint
|
|
bindProgram(Effect effect, OpenSubdiv::OsdDrawContext::PatchArray const & patch)
|
|
{
|
|
EffectDesc effectDesc(patch.GetDescriptor(), effect);
|
|
EffectDrawRegistry::ConfigType *
|
|
config = effectRegistry.GetDrawConfig(effectDesc);
|
|
|
|
GLuint program = config->program;
|
|
|
|
glUseProgram(program);
|
|
|
|
if (! g_transformUB) {
|
|
glGenBuffers(1, &g_transformUB);
|
|
glBindBuffer(GL_UNIFORM_BUFFER, g_transformUB);
|
|
glBufferData(GL_UNIFORM_BUFFER,
|
|
sizeof(g_transformData), NULL, GL_STATIC_DRAW);
|
|
};
|
|
glBindBuffer(GL_UNIFORM_BUFFER, g_transformUB);
|
|
glBufferSubData(GL_UNIFORM_BUFFER,
|
|
0, sizeof(g_transformData), &g_transformData);
|
|
glBindBuffer(GL_UNIFORM_BUFFER, 0);
|
|
|
|
glBindBufferBase(GL_UNIFORM_BUFFER, g_transformBinding, g_transformUB);
|
|
|
|
// Update and bind tessellation state
|
|
struct Tessellation {
|
|
float TessLevel;
|
|
} tessellationData;
|
|
|
|
tessellationData.TessLevel = static_cast<float>(1 << g_tessLevel);
|
|
|
|
if (! g_tessellationUB) {
|
|
glGenBuffers(1, &g_tessellationUB);
|
|
glBindBuffer(GL_UNIFORM_BUFFER, g_tessellationUB);
|
|
glBufferData(GL_UNIFORM_BUFFER,
|
|
sizeof(tessellationData), NULL, GL_STATIC_DRAW);
|
|
};
|
|
glBindBuffer(GL_UNIFORM_BUFFER, g_tessellationUB);
|
|
glBufferSubData(GL_UNIFORM_BUFFER,
|
|
0, sizeof(tessellationData), &tessellationData);
|
|
glBindBuffer(GL_UNIFORM_BUFFER, 0);
|
|
|
|
glBindBufferBase(GL_UNIFORM_BUFFER, g_tessellationBinding, g_tessellationUB);
|
|
|
|
// Update and bind lighting state
|
|
struct Lighting {
|
|
struct Light {
|
|
float position[4];
|
|
float ambient[4];
|
|
float diffuse[4];
|
|
float specular[4];
|
|
} lightSource[2];
|
|
} lightingData = {
|
|
{{ { 0.5, 0.2f, 1.0f, 0.0f },
|
|
{ 0.1f, 0.1f, 0.1f, 1.0f },
|
|
{ 0.7f, 0.7f, 0.7f, 1.0f },
|
|
{ 0.8f, 0.8f, 0.8f, 1.0f } },
|
|
|
|
{ { -0.8f, 0.4f, -1.0f, 0.0f },
|
|
{ 0.0f, 0.0f, 0.0f, 1.0f },
|
|
{ 0.5f, 0.5f, 0.5f, 1.0f },
|
|
{ 0.8f, 0.8f, 0.8f, 1.0f } }}
|
|
};
|
|
if (! g_lightingUB) {
|
|
glGenBuffers(1, &g_lightingUB);
|
|
glBindBuffer(GL_UNIFORM_BUFFER, g_lightingUB);
|
|
glBufferData(GL_UNIFORM_BUFFER,
|
|
sizeof(lightingData), NULL, GL_STATIC_DRAW);
|
|
};
|
|
glBindBuffer(GL_UNIFORM_BUFFER, g_lightingUB);
|
|
glBufferSubData(GL_UNIFORM_BUFFER,
|
|
0, sizeof(lightingData), &lightingData);
|
|
glBindBuffer(GL_UNIFORM_BUFFER, 0);
|
|
|
|
glBindBufferBase(GL_UNIFORM_BUFFER, g_lightingBinding, g_lightingUB);
|
|
|
|
if (g_mesh->GetDrawContext()->GetVertexTextureBuffer()) {
|
|
glActiveTexture(GL_TEXTURE0);
|
|
glBindTexture(GL_TEXTURE_BUFFER,
|
|
g_mesh->GetDrawContext()->GetVertexTextureBuffer());
|
|
}
|
|
if (g_mesh->GetDrawContext()->GetVertexValenceTextureBuffer()) {
|
|
glActiveTexture(GL_TEXTURE1);
|
|
glBindTexture(GL_TEXTURE_BUFFER,
|
|
g_mesh->GetDrawContext()->GetVertexValenceTextureBuffer());
|
|
}
|
|
if (g_mesh->GetDrawContext()->GetQuadOffsetsTextureBuffer()) {
|
|
glActiveTexture(GL_TEXTURE2);
|
|
glBindTexture(GL_TEXTURE_BUFFER,
|
|
g_mesh->GetDrawContext()->GetQuadOffsetsTextureBuffer());
|
|
}
|
|
if (g_mesh->GetDrawContext()->GetPatchParamTextureBuffer()) {
|
|
glActiveTexture(GL_TEXTURE3);
|
|
glBindTexture(GL_TEXTURE_BUFFER,
|
|
g_mesh->GetDrawContext()->GetPatchParamTextureBuffer());
|
|
}
|
|
if (g_mesh->GetDrawContext()->GetFvarDataTextureBuffer()) {
|
|
glActiveTexture(GL_TEXTURE4);
|
|
glBindTexture(GL_TEXTURE_BUFFER,
|
|
g_mesh->GetDrawContext()->GetFvarDataTextureBuffer());
|
|
}
|
|
|
|
glActiveTexture(GL_TEXTURE0);
|
|
|
|
return program;
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
static int
|
|
drawPatches(OpenSubdiv::OsdDrawContext::PatchArrayVector const &patches, GLfloat const *color)
|
|
{
|
|
int numDrawCalls = 0;
|
|
for (int i=0; i<(int)patches.size(); ++i) {
|
|
OpenSubdiv::OsdDrawContext::PatchArray const & patch = patches[i];
|
|
|
|
OpenSubdiv::OsdDrawContext::PatchDescriptor desc = patch.GetDescriptor();
|
|
OpenSubdiv::FarPatchTables::Type patchType = desc.GetType();
|
|
|
|
GLenum primType;
|
|
|
|
switch(patchType) {
|
|
case OpenSubdiv::FarPatchTables::QUADS:
|
|
primType = GL_LINES_ADJACENCY;
|
|
break;
|
|
case OpenSubdiv::FarPatchTables::TRIANGLES:
|
|
primType = GL_TRIANGLES;
|
|
break;
|
|
default:
|
|
#if defined(GL_ARB_tessellation_shader) || defined(GL_VERSION_4_0)
|
|
primType = GL_PATCHES;
|
|
glPatchParameteri(GL_PATCH_VERTICES, desc.GetNumControlVertices());
|
|
#else
|
|
primType = GL_POINTS;
|
|
#endif
|
|
}
|
|
|
|
#if defined(GL_ARB_tessellation_shader) || defined(GL_VERSION_4_0)
|
|
GLuint program = bindProgram(GetEffect(), patch);
|
|
|
|
GLuint uniformColor =
|
|
glGetUniformLocation(program, "diffuseColor");
|
|
|
|
glProgramUniform4f(program, uniformColor, color[0], color[1], color[2], 1);
|
|
|
|
GLuint uniformGregoryQuadOffsetBase =
|
|
glGetUniformLocation(program, "GregoryQuadOffsetBase");
|
|
GLuint uniformPrimitiveIdBase =
|
|
glGetUniformLocation(program, "PrimitiveIdBase");
|
|
|
|
glProgramUniform1i(program, uniformGregoryQuadOffsetBase,
|
|
patch.GetQuadOffsetIndex());
|
|
glProgramUniform1i(program, uniformPrimitiveIdBase,
|
|
patch.GetPatchIndex());
|
|
#else
|
|
GLuint program = bindProgram(GetEffect(), patch);
|
|
GLint uniformPrimitiveIdBase =
|
|
glGetUniformLocation(program, "PrimitiveIdBase");
|
|
if (uniformPrimitiveIdBase != -1)
|
|
glUniform1i(uniformPrimitiveIdBase, patch.GetPatchIndex());
|
|
#endif
|
|
|
|
glDrawElements(primType, patch.GetNumIndices(), GL_UNSIGNED_INT,
|
|
(void *)(patch.GetVertIndex() * sizeof(unsigned int)));
|
|
++numDrawCalls;
|
|
}
|
|
return numDrawCalls;
|
|
}
|
|
static void
|
|
display() {
|
|
|
|
Stopwatch s;
|
|
s.Start();
|
|
|
|
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
|
|
|
glViewport(0, 0, g_width, g_height);
|
|
|
|
// prepare view matrix
|
|
double aspect = g_width/(double)g_height;
|
|
identity(g_transformData.ModelViewMatrix);
|
|
translate(g_transformData.ModelViewMatrix, -g_pan[0], -g_pan[1], -g_dolly);
|
|
rotate(g_transformData.ModelViewMatrix, g_rotate[1], 1, 0, 0);
|
|
rotate(g_transformData.ModelViewMatrix, g_rotate[0], 0, 1, 0);
|
|
rotate(g_transformData.ModelViewMatrix, -90, 1, 0, 0);
|
|
translate(g_transformData.ModelViewMatrix,
|
|
-g_center[0], -g_center[1], -g_center[2]);
|
|
perspective(g_transformData.ProjectionMatrix,
|
|
45.0f, (float)aspect, 0.01f, 500.0f);
|
|
multMatrix(g_transformData.ModelViewProjectionMatrix,
|
|
g_transformData.ModelViewMatrix,
|
|
g_transformData.ProjectionMatrix);
|
|
|
|
// make sure that the vertex buffer is interoped back as a GL resources.
|
|
g_mesh->BindVertexBuffer();
|
|
|
|
glBindVertexArray(g_vao);
|
|
|
|
// patch drawing
|
|
int numDrawCalls = 0;
|
|
|
|
// primitive counting
|
|
glBeginQuery(GL_PRIMITIVES_GENERATED, g_queries[0]);
|
|
#if defined(GL_VERSION_3_3)
|
|
glBeginQuery(GL_TIME_ELAPSED, g_queries[1]);
|
|
#endif
|
|
|
|
if (g_partitioning) {
|
|
// draw for each partition
|
|
static GLfloat color[][3] = { {1, 0, 0},
|
|
{0, 1, 0},
|
|
{0, 0, 1},
|
|
{1, 1, 0},
|
|
{1, 0, 1},
|
|
{0, 1, 1} };
|
|
for (int material = 0; material < g_mesh->GetNumPartitions(); ++material) {
|
|
OpenSubdiv::OsdDrawContext::PatchArrayVector const & patches = g_mesh->GetPatchArrays(material);
|
|
|
|
numDrawCalls += drawPatches(patches, color[material]);
|
|
}
|
|
} else {
|
|
// draw at once
|
|
static GLfloat color[3] = {0.5, 0.5, 0.5};
|
|
OpenSubdiv::OsdDrawContext::PatchArrayVector const & patches = g_mesh->GetDrawContext()->patchArrays;
|
|
numDrawCalls += drawPatches(patches, color);
|
|
}
|
|
|
|
glEndQuery(GL_PRIMITIVES_GENERATED);
|
|
#if defined(GL_VERSION_3_3)
|
|
glEndQuery(GL_TIME_ELAPSED);
|
|
#endif
|
|
|
|
glBindVertexArray(0);
|
|
|
|
glUseProgram(0);
|
|
|
|
s.Stop();
|
|
float drawCpuTime = float(s.GetElapsed() * 1000.0f);
|
|
|
|
GLuint numPrimsGenerated = 0;
|
|
GLuint timeElapsed = 0;
|
|
glGetQueryObjectuiv(g_queries[0], GL_QUERY_RESULT, &numPrimsGenerated);
|
|
#if defined(GL_VERSION_3_3)
|
|
glGetQueryObjectuiv(g_queries[1], GL_QUERY_RESULT, &timeElapsed);
|
|
#endif
|
|
float drawGpuTime = timeElapsed / 1000.0f / 1000.0f;
|
|
|
|
if (g_hud.IsVisible()) {
|
|
g_fpsTimer.Stop();
|
|
double fps = 1.0/g_fpsTimer.GetElapsed();
|
|
g_fpsTimer.Start();
|
|
|
|
g_hud.DrawString(10, -180, "Tess level : %d", g_tessLevel);
|
|
g_hud.DrawString(10, -160, "Primitives : %d", numPrimsGenerated);
|
|
g_hud.DrawString(10, -140, "Draw calls : %d", numDrawCalls);
|
|
g_hud.DrawString(10, -120, "Scheme : %s", g_scheme==kBilinear ? "BILINEAR" : (g_scheme == kLoop ? "LOOP" : "CATMARK"));
|
|
g_hud.DrawString(10, -60, "GPU Draw : %.3f ms", drawGpuTime);
|
|
g_hud.DrawString(10, -40, "CPU Draw : %.3f ms", drawCpuTime);
|
|
g_hud.DrawString(10, -20, "FPS : %3.1f", fps);
|
|
|
|
g_hud.Flush();
|
|
}
|
|
|
|
glFinish();
|
|
|
|
//checkGLErrors("display leave");
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
static void
|
|
#if GLFW_VERSION_MAJOR>=3
|
|
motion(GLFWwindow *, double dx, double dy) {
|
|
int x=(int)dx, y=(int)dy;
|
|
#else
|
|
motion(int x, int y) {
|
|
#endif
|
|
|
|
if (g_mbutton[0] && !g_mbutton[1] && !g_mbutton[2]) {
|
|
// orbit
|
|
g_rotate[0] += x - g_prev_x;
|
|
g_rotate[1] += y - g_prev_y;
|
|
} else if (!g_mbutton[0] && !g_mbutton[1] && g_mbutton[2]) {
|
|
// pan
|
|
g_pan[0] -= g_dolly*(x - g_prev_x)/g_width;
|
|
g_pan[1] += g_dolly*(y - g_prev_y)/g_height;
|
|
} else if ((g_mbutton[0] && !g_mbutton[1] && g_mbutton[2]) or
|
|
(!g_mbutton[0] && g_mbutton[1] && !g_mbutton[2])) {
|
|
// dolly
|
|
g_dolly -= g_dolly*0.01f*(x - g_prev_x);
|
|
if(g_dolly <= 0.01) g_dolly = 0.01f;
|
|
}
|
|
|
|
g_prev_x = x;
|
|
g_prev_y = y;
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
static void
|
|
#if GLFW_VERSION_MAJOR>=3
|
|
mouse(GLFWwindow *, int button, int state, int /* mods */) {
|
|
#else
|
|
mouse(int button, int state) {
|
|
#endif
|
|
|
|
if (button == 0 && state == GLFW_PRESS && g_hud.MouseClick(g_prev_x, g_prev_y))
|
|
return;
|
|
|
|
if (button < 3) {
|
|
g_mbutton[button] = (state == GLFW_PRESS);
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
static void
|
|
uninitGL() {
|
|
|
|
glDeleteQueries(2, g_queries);
|
|
glDeleteVertexArrays(1, &g_vao);
|
|
|
|
if (g_mesh)
|
|
delete g_mesh;
|
|
|
|
delete g_cpuComputeController;
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
static void
|
|
#if GLFW_VERSION_MAJOR>=3
|
|
reshape(GLFWwindow *, int width, int height) {
|
|
#else
|
|
reshape(int width, int height) {
|
|
#endif
|
|
|
|
g_width = width;
|
|
g_height = height;
|
|
|
|
int windowWidth = g_width, windowHeight = g_height;
|
|
#if GLFW_VERSION_MAJOR>=3
|
|
// window size might not match framebuffer size on a high DPI display
|
|
glfwGetWindowSize(g_window, &windowWidth, &windowHeight);
|
|
#endif
|
|
g_hud.Rebuild(windowWidth, windowHeight);
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
#if GLFW_VERSION_MAJOR>=3
|
|
void windowClose(GLFWwindow*) {
|
|
g_running = false;
|
|
}
|
|
#else
|
|
int windowClose() {
|
|
g_running = false;
|
|
return GL_TRUE;
|
|
}
|
|
#endif
|
|
|
|
//------------------------------------------------------------------------------
|
|
static void
|
|
#if GLFW_VERSION_MAJOR>=3
|
|
keyboard(GLFWwindow *, int key, int /* scancode */, int event, int /* mods */) {
|
|
#else
|
|
#define GLFW_KEY_ESCAPE GLFW_KEY_ESC
|
|
keyboard(int key, int event) {
|
|
#endif
|
|
|
|
if (event == GLFW_RELEASE) return;
|
|
if (g_hud.KeyDown(tolower(key))) return;
|
|
|
|
switch (key) {
|
|
case 'Q': g_running = 0; break;
|
|
case 'F': fitFrame(); break;
|
|
case '+':
|
|
case '=': g_tessLevel++; break;
|
|
case '-': g_tessLevel = std::max(g_tessLevelMin, g_tessLevel-1); break;
|
|
case GLFW_KEY_ESCAPE: g_hud.SetVisible(!g_hud.IsVisible()); break;
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
static void
|
|
rebuildOsdMesh()
|
|
{
|
|
createOsdMesh( g_defaultShapes[ g_currentShape ].data, g_level, g_defaultShapes[ g_currentShape ].scheme );
|
|
}
|
|
|
|
static void
|
|
callbackLevel(int l)
|
|
{
|
|
g_level = l;
|
|
rebuildOsdMesh();
|
|
}
|
|
|
|
static void
|
|
callbackModel(int m)
|
|
{
|
|
if (m < 0)
|
|
m = 0;
|
|
|
|
if (m >= (int)g_defaultShapes.size())
|
|
m = (int)g_defaultShapes.size() - 1;
|
|
|
|
g_currentShape = m;
|
|
rebuildOsdMesh();
|
|
}
|
|
|
|
static void
|
|
callbackDisplayStyle(int b)
|
|
{
|
|
g_displayStyle = b;
|
|
}
|
|
|
|
static void
|
|
callbackAdaptive(bool checked, int /* a */)
|
|
{
|
|
if (OpenSubdiv::OsdGLDrawContext::SupportsAdaptiveTessellation()) {
|
|
g_adaptive = checked;
|
|
rebuildOsdMesh();
|
|
}
|
|
}
|
|
|
|
static void
|
|
callbackCheckBox(bool checked, int button)
|
|
{
|
|
switch (button) {
|
|
case kHUD_CB_PARTITIONING:
|
|
g_partitioning = checked;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
initHUD()
|
|
{
|
|
int windowWidth = g_width, windowHeight = g_height;
|
|
#if GLFW_VERSION_MAJOR>=3
|
|
// window size might not match framebuffer size on a high DPI display
|
|
glfwGetWindowSize(g_window, &windowWidth, &windowHeight);
|
|
#endif
|
|
g_hud.Init(windowWidth, windowHeight);
|
|
|
|
int shading_pulldown = g_hud.AddPullDown("Shading (W)", 10, 10, 250, callbackDisplayStyle, 'w');
|
|
g_hud.AddPullDownButton(shading_pulldown, "Wire", kWire, g_displayStyle==kWire);
|
|
g_hud.AddPullDownButton(shading_pulldown, "Shaded", kShaded, g_displayStyle==kShaded);
|
|
g_hud.AddPullDownButton(shading_pulldown, "Wire+Shaded", kWireShaded, g_displayStyle==kWireShaded);
|
|
|
|
g_hud.AddCheckBox("Partitioning", g_partitioning != 0,
|
|
350, 10, callbackCheckBox, kHUD_CB_PARTITIONING, 'p');
|
|
|
|
|
|
if (OpenSubdiv::OsdGLDrawContext::SupportsAdaptiveTessellation())
|
|
g_hud.AddCheckBox("Adaptive (`)", g_adaptive!=0, 10, 190, callbackAdaptive, 0, '`');
|
|
|
|
for (int i = 1; i < 11; ++i) {
|
|
char level[16];
|
|
sprintf(level, "Lv. %d", i);
|
|
g_hud.AddRadioButton(3, level, i==2, 10, 210+i*20, callbackLevel, i, '0'+(i%10));
|
|
}
|
|
|
|
int pulldown_handle = g_hud.AddPullDown("Shape (N)", -300, 10, 300, callbackModel, 'n');
|
|
for (int i = 0; i < (int)g_defaultShapes.size(); ++i) {
|
|
g_hud.AddPullDownButton(pulldown_handle, g_defaultShapes[i].name.c_str(),i);
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
static void
|
|
initGL()
|
|
{
|
|
glClearColor(0.1f, 0.1f, 0.1f, 1.0f);
|
|
glEnable(GL_DEPTH_TEST);
|
|
glDepthFunc(GL_LEQUAL);
|
|
glCullFace(GL_BACK);
|
|
glEnable(GL_CULL_FACE);
|
|
|
|
glGenQueries(2, g_queries);
|
|
|
|
glGenVertexArrays(1, &g_vao);
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
static void
|
|
idle() {
|
|
updateGeom();
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
static void
|
|
callbackError(OpenSubdiv::OsdErrorType err, const char *message)
|
|
{
|
|
printf("OsdError: %d\n", err);
|
|
printf("%s", message);
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
static void
|
|
setGLCoreProfile()
|
|
{
|
|
#if GLFW_VERSION_MAJOR>=3
|
|
#define glfwOpenWindowHint glfwWindowHint
|
|
#define GLFW_OPENGL_VERSION_MAJOR GLFW_CONTEXT_VERSION_MAJOR
|
|
#define GLFW_OPENGL_VERSION_MINOR GLFW_CONTEXT_VERSION_MINOR
|
|
#endif
|
|
|
|
glfwOpenWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
|
|
#if not defined(__APPLE__)
|
|
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MAJOR, 4);
|
|
#ifdef OPENSUBDIV_HAS_GLSL_COMPUTE
|
|
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MINOR, 3);
|
|
#else
|
|
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MINOR, 2);
|
|
#endif
|
|
|
|
#else
|
|
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MAJOR, 3);
|
|
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MINOR, 2);
|
|
#endif
|
|
glfwOpenWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
int main(int argc, char ** argv)
|
|
{
|
|
std::string str;
|
|
for (int i = 1; i < argc; ++i) {
|
|
if (!strcmp(argv[i], "-d"))
|
|
g_level = atoi(argv[++i]);
|
|
else {
|
|
std::ifstream ifs(argv[1]);
|
|
if (ifs) {
|
|
std::stringstream ss;
|
|
ss << ifs.rdbuf();
|
|
ifs.close();
|
|
str = ss.str();
|
|
g_defaultShapes.push_back(SimpleShape(str.c_str(), argv[1], kCatmark));
|
|
}
|
|
}
|
|
}
|
|
initializeShapes();
|
|
OsdSetErrorCallback(callbackError);
|
|
|
|
if (not glfwInit()) {
|
|
printf("Failed to initialize GLFW\n");
|
|
return 1;
|
|
}
|
|
|
|
static const char windowTitle[] = "OpenSubdiv face partitioning example";
|
|
|
|
#define CORE_PROFILE
|
|
#ifdef CORE_PROFILE
|
|
setGLCoreProfile();
|
|
#endif
|
|
|
|
#if GLFW_VERSION_MAJOR>=3
|
|
if (not (g_window=glfwCreateWindow(g_width, g_height, windowTitle, NULL, NULL))) {
|
|
printf("Failed to open window.\n");
|
|
glfwTerminate();
|
|
return 1;
|
|
}
|
|
glfwMakeContextCurrent(g_window);
|
|
|
|
// accommocate high DPI displays (e.g. mac retina displays)
|
|
glfwGetFramebufferSize(g_window, &g_width, &g_height);
|
|
glfwSetFramebufferSizeCallback(g_window, reshape);
|
|
|
|
glfwSetKeyCallback(g_window, keyboard);
|
|
glfwSetCursorPosCallback(g_window, motion);
|
|
glfwSetMouseButtonCallback(g_window, mouse);
|
|
glfwSetWindowCloseCallback(g_window, windowClose);
|
|
#else
|
|
if (glfwOpenWindow(g_width, g_height, 8, 8, 8, 8, 24, 8, GLFW_WINDOW) == GL_FALSE) {
|
|
printf("Failed to open window.\n");
|
|
glfwTerminate();
|
|
return 1;
|
|
}
|
|
glfwSetWindowTitle(windowTitle);
|
|
glfwSetKeyCallback(keyboard);
|
|
glfwSetMousePosCallback(motion);
|
|
glfwSetMouseButtonCallback(mouse);
|
|
glfwSetWindowSizeCallback(reshape);
|
|
glfwSetWindowCloseCallback(windowClose);
|
|
#endif
|
|
|
|
|
|
#if defined(OSD_USES_GLEW)
|
|
#ifdef CORE_PROFILE
|
|
// this is the only way to initialize glew correctly under core profile context.
|
|
glewExperimental = true;
|
|
#endif
|
|
if (GLenum r = glewInit() != GLEW_OK) {
|
|
printf("Failed to initialize glew. Error = %s\n", glewGetErrorString(r));
|
|
exit(1);
|
|
}
|
|
#ifdef CORE_PROFILE
|
|
// clear GL errors which was generated during glewInit()
|
|
glGetError();
|
|
#endif
|
|
#endif
|
|
|
|
// activate feature adaptive tessellation if OSD supports it
|
|
g_adaptive = OpenSubdiv::OsdGLDrawContext::SupportsAdaptiveTessellation();
|
|
|
|
initGL();
|
|
|
|
glfwSwapInterval(0);
|
|
|
|
g_cpuComputeController = new OpenSubdiv::OsdCpuComputeController();
|
|
|
|
initHUD();
|
|
rebuildOsdMesh();
|
|
|
|
while (g_running) {
|
|
idle();
|
|
display();
|
|
|
|
#if GLFW_VERSION_MAJOR>=3
|
|
glfwPollEvents();
|
|
glfwSwapBuffers(g_window);
|
|
#else
|
|
glfwSwapBuffers();
|
|
#endif
|
|
|
|
glFinish();
|
|
}
|
|
|
|
uninitGL();
|
|
glfwTerminate();
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|