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OpenSubdiv/examples/farViewer/farViewer.cpp
David G. Yu 1ba1e07ad1 iso-646 fix for ptex / examples / tutorials
2016-06-25 14:27:53 -07:00

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//
// 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.
//
#if defined(__APPLE__)
#if defined(OSD_USES_GLEW)
#include <GL/glew.h>
#else
#include <OpenGL/gl3.h>
#endif
#define GLFW_INCLUDE_GL3
#define GLFW_NO_GLU
#else
#include <stdlib.h>
#include <GL/glew.h>
#if defined(WIN32)
#include <GL/wglew.h>
#endif
#endif
#include <GLFW/glfw3.h>
GLFWwindow* g_window=0;
GLFWmonitor* g_primary=0;
#include <osd/cpuGLVertexBuffer.h>
#include <far/patchTableFactory.h>
#include <far/stencilTable.h>
#include <far/stencilTableFactory.h>
#include <far/primvarRefiner.h>
#include "../../regression/common/far_utils.h"
#include "../common/stopwatch.h"
#include "../common/simple_math.h"
#include "../common/glUtils.h"
#include "../common/glControlMeshDisplay.h"
#include "../common/glHud.h"
#include "init_shapes.h"
#include "gl_mesh.h"
#include "gl_fontutils.h"
#include <typeinfo>
#include <cfloat>
#include <vector>
#include <set>
#include <fstream>
#include <sstream>
#include <cstdio>
#if _MSC_VER
#define snprintf _snprintf
#endif
//------------------------------------------------------------------------------
int g_level = 3,
g_currentShape = 7;
enum HudCheckBox { kHUD_CB_DISPLAY_CONTROL_MESH_EDGES,
kHUD_CB_DISPLAY_CONTROL_MESH_VERTS,
kHUD_CB_ANIMATE_VERTICES,
kHUD_CB_DISPLAY_PATCH_COLOR };
enum DrawMode { kDRAW_VERTICES,
kDRAW_WIREFRAME,
kDRAW_FACES };
int g_frame = 0,
g_repeatCount = 0;
// GUI variables
int g_fullscreen = 0,
g_mbutton[3] = {0, 0, 0},
g_running = 1;
int g_displayPatchColor = 1,
g_FarDrawMode = kDRAW_FACES,
g_FarDrawVertIDs = false,
g_FarDrawEdgeIDs = false,
g_FarDrawFaceIDs = false,
g_FarDrawPtexIDs = false,
g_FarDrawEdgeSharpness = false,
g_FarDrawGregogyBasis = false,
g_FarDrawFVarVerts = false,
g_FarDrawFVarPatches = false,
g_FarDrawFVarPatchTess = 5,
g_numPatches = 0,
g_maxValence = 0,
g_currentPatch = 0,
g_Adaptive = true,
g_useStencils = true;
typedef OpenSubdiv::Sdc::Options SdcOptions;
SdcOptions::FVarLinearInterpolation g_fvarInterpolation =
SdcOptions::FVAR_LINEAR_ALL;
OpenSubdiv::Far::PatchDescriptor g_currentPatchDesc;
OpenSubdiv::Far::PatchDescriptor::Type g_currentFVarPatchType;
float g_rotate[2] = {0, 0},
g_dolly = 5,
g_pan[2] = {0, 0},
g_center[3] = {0, 0, 0},
g_size = 0;
int g_prev_x = 0,
g_prev_y = 0;
int g_width = 1024,
g_height = 1024;
GLhud g_hud;
GLFont * g_font=0;
// performance
float g_cpuTime = 0;
float g_gpuTime = 0;
Stopwatch g_fpsTimer;
GLuint g_queries[2] = {0, 0};
GLuint g_transformUB = 0,
g_lightingUB = 0;
struct Transform {
float ModelViewMatrix[16];
float ProjectionMatrix[16];
float ModelViewProjectionMatrix[16];
} g_transformData;
static GLMesh g_far_glmesh;
static GLControlMeshDisplay g_controlMeshDisplay;
static GLuint g_controlMeshDisplayVBO = 0;
//------------------------------------------------------------------------------
typedef OpenSubdiv::Far::TopologyRefiner FTopologyRefiner;
typedef OpenSubdiv::Far::TopologyRefinerFactory<Shape> FTopologyRefinerFactory;
//------------------------------------------------------------------------------
// Vertex class implementation
struct Vertex {
Vertex() { /* _pos[0]=_pos[1]=_pos[2]=0.0f; */ }
Vertex( int /*i*/ ) { }
Vertex( float x, float y, float z ) { _pos[0]=x; _pos[1]=y; _pos[2]=z; }
Vertex( const Vertex & src ) { _pos[0]=src._pos[0]; _pos[1]=src._pos[1]; _pos[2]=src._pos[2]; }
~Vertex( ) { }
void AddWithWeight(Vertex const & src, float weight) {
_pos[0]+=weight*src._pos[0];
_pos[1]+=weight*src._pos[1];
_pos[2]+=weight*src._pos[2];
}
void AddWithWeight(Vertex const & src, float weight, float /* ds */, float /* dt */) {
_pos[0]+=weight*src._pos[0];
_pos[1]+=weight*src._pos[1];
_pos[2]+=weight*src._pos[2];
}
void Clear( void * =0 ) { _pos[0]=_pos[1]=_pos[2]=0.0f; }
void SetPosition(float x, float y, float z) { _pos[0]=x; _pos[1]=y; _pos[2]=z; }
float const * GetPos() const { return _pos; }
private:
float _pos[3];
};
//------------------------------------------------------------------------------
// generate display IDs for Far verts
static void
createVertNumbers(OpenSubdiv::Far::TopologyRefiner const & refiner,
std::vector<Vertex> const & vertexBuffer) {
int maxlevel = refiner.GetMaxLevel(),
firstvert = 0;
if (refiner.IsUniform()) {
for (int i=0; i<maxlevel; ++i) {
firstvert += refiner.GetLevel(i).GetNumVertices();
}
}
static char buf[16];
if (refiner.IsUniform()) {
for (int i=firstvert; i<(int)vertexBuffer.size(); ++i) {
snprintf(buf, 16, "%d", i);
g_font->Print3D(vertexBuffer[i].GetPos(), buf, 1);
}
} else {
for (int level=0, vert=0; level<=refiner.GetMaxLevel(); ++level) {
for (int i=0; i<refiner.GetLevel(level).GetNumVertices(); ++i, ++vert) {
snprintf(buf, 16, "%d", i);
g_font->Print3D(vertexBuffer[vert].GetPos(), buf, 1);
}
}
}
}
//------------------------------------------------------------------------------
// generate display IDs for Far edges
static void
createEdgeNumbers(OpenSubdiv::Far::TopologyRefiner const & refiner,
std::vector<Vertex> const & vertexBuffer, bool ids=false, bool sharpness=false) {
if (ids || sharpness) {
int maxlevel = refiner.GetMaxLevel(),
firstvert = 0;
for (int i=0; i<maxlevel; ++i) {
firstvert += refiner.GetLevel(i).GetNumVertices();
}
OpenSubdiv::Far::TopologyLevel const & refLastLevel = refiner.GetLevel(maxlevel);
static char buf[16];
for (int i=0; i<refLastLevel.GetNumEdges(); ++i) {
Vertex center(0.0f, 0.0f, 0.0f);
OpenSubdiv::Far::ConstIndexArray const verts = refLastLevel.GetEdgeVertices(i);
assert(verts.size()==2);
center.AddWithWeight(vertexBuffer[firstvert+verts[0]], 0.5f);
center.AddWithWeight(vertexBuffer[firstvert+verts[1]], 0.5f);
if (ids) {
snprintf(buf, 16, "%d", i);
g_font->Print3D(center.GetPos(), buf, 3);
}
if (sharpness) {
float sharpness = refLastLevel.GetEdgeSharpness(i);
if (sharpness>0.0f) {
snprintf(buf, 16, "%g", sharpness);
g_font->Print3D(center.GetPos(), buf, std::min(8,(int)sharpness+4));
}
}
}
}
}
//------------------------------------------------------------------------------
// generate display IDs for Far faces
static void
createFaceNumbers(OpenSubdiv::Far::TopologyRefiner const & refiner,
std::vector<Vertex> const & vertexBuffer) {
static char buf[16];
if (refiner.IsUniform()) {
int maxlevel = refiner.GetMaxLevel(),
firstvert = 0;
for (int i=0; i<maxlevel; ++i) {
firstvert += refiner.GetLevel(i).GetNumVertices();
}
OpenSubdiv::Far::TopologyLevel const & refLastLevel = refiner.GetLevel(maxlevel);
for (int face=0; face<refLastLevel.GetNumFaces(); ++face) {
Vertex center(0.0f, 0.0f, 0.0f);
OpenSubdiv::Far::ConstIndexArray const verts = refLastLevel.GetFaceVertices(face);
float weight = 1.0f / (float)verts.size();
for (int vert=0; vert<verts.size(); ++vert) {
center.AddWithWeight(vertexBuffer[firstvert+verts[vert]], weight);
}
snprintf(buf, 16, "%d", face);
g_font->Print3D(center.GetPos(), buf, 2);
}
} else {
int maxlevel = refiner.GetMaxLevel(),
// patch = refiner.GetLevel(0).GetNumFaces(),
firstvert = refiner.GetLevel(0).GetNumVertices();
for (int level=1; level<=maxlevel; ++level) {
OpenSubdiv::Far::TopologyLevel const & refLevel = refiner.GetLevel(level);
int nfaces = refLevel.GetNumFaces();
for (int face=0; face<nfaces; ++face /*, ++patch */) {
Vertex center(0.0f, 0.0f, 0.0f);
OpenSubdiv::Far::ConstIndexArray const verts = refLevel.GetFaceVertices(face);
float weight = 1.0f / (float)verts.size();
for (int vert=0; vert<verts.size(); ++vert) {
center.AddWithWeight(vertexBuffer[firstvert+verts[vert]], weight);
}
snprintf(buf, 16, "%d", face);
g_font->Print3D(center.GetPos(), buf, 2);
}
firstvert+=refLevel.GetNumVertices();
}
}
}
//------------------------------------------------------------------------------
// generate display vert IDs for the selected Far patch
static void
createPatchNumbers(OpenSubdiv::Far::PatchTable const & patchTable,
std::vector<Vertex> const & vertexBuffer) {
if (! g_currentPatch)
return;
int patchID = g_currentPatch-1,
patchArray = -1;
// Find PatchArray containing our patch
for (int array=0; array<(int)patchTable.GetNumPatchArrays(); ++array) {
int npatches = patchTable.GetNumPatches(array);
if (patchID >= npatches) {
patchID -= npatches;
} else {
patchArray = array;
break;
}
}
if (patchArray==-1) {
return;
}
g_currentPatchDesc = patchTable.GetPatchArrayDescriptor(patchArray);
OpenSubdiv::Far::ConstIndexArray const cvs =
patchTable.GetPatchVertices(patchArray, patchID);
static char buf[16];
for (int i=0; i<cvs.size(); ++i) {
snprintf(buf, 16, "%d", i);
g_font->Print3D(vertexBuffer[cvs[i]].GetPos(), buf, 1);
}
}
//------------------------------------------------------------------------------
// generate display vert IDs for the selected Far FVar patch
static void
createFVarPatchNumbers(OpenSubdiv::Far::PatchTable const & patchTable,
std::vector<Vertex> const & fvarBuffer) {
static int channel = 0;
int patch = g_currentPatch-1;
static char buf[16];
if (patch>=0 && patch<patchTable.GetNumPatchesTotal()) {
OpenSubdiv::Far::PatchTable::PatchHandle handle;
handle.patchIndex = patch;
OpenSubdiv::Far::ConstIndexArray const cvs =
patchTable.GetPatchFVarValues(handle, channel);
for (int i=0; i<cvs.size(); ++i) {
snprintf(buf, 16, "%d", i);
g_font->Print3D(fvarBuffer[cvs[i]].GetPos(), buf, 2);
}
}
}
//------------------------------------------------------------------------------
// generate display for Far FVar patches
static GLMesh fvarVerts,
fvarWire;
static void
createFVarPatches(OpenSubdiv::Far::TopologyRefiner const & refiner,
OpenSubdiv::Far::PatchTable const & patchTable,
std::vector<Vertex> const & fvarBuffer) {
assert(!fvarBuffer.empty());
static int channel = 0;
if (g_FarDrawFVarVerts) {
GLMesh::Options options;
options.vertColorMode = GLMesh::VERTCOLOR_BY_LEVEL;
fvarVerts.InitializeFVar(options, refiner, &patchTable, channel, 0, (float *)(&fvarBuffer[0]));
}
if (g_FarDrawFVarPatches) {
// generate uniform tessellation for patches
int tessFactor = g_FarDrawFVarPatchTess,
npatches = patchTable.GetNumPatchesTotal(),
nvertsperpatch = (tessFactor) * (tessFactor),
nverts = npatches * nvertsperpatch;
float * uvs = (float *)alloca(tessFactor);
for (int i=0; i<tessFactor; ++i) {
uvs[i] = (float)i/(tessFactor-1.0f);
}
std::vector<Vertex> verts(nverts);
memset(&verts[0], 0, verts.size()*sizeof(Vertex));
/*
OpenSubdiv::Far::PatchTable::PatchHandle handle;
Vertex * vert = &verts[0];
for (int patch=0; patch<npatches; ++patch) {
for (int i=0; i<tessFactor; ++i) {
for (int j=0; j<tessFactor; ++j, ++vert) {
handle.patchIndex = patch;
// To be replaced with EvaluateBasis() for the appropriate channel:
//patchTable.EvaluateFaceVarying(channel, handle, uvs[i], uvs[j], fvarBuffer, *vert);
}
}
}
*/
GLMesh::Options options;
options.edgeColorMode = GLMesh::EDGECOLOR_BY_PATCHTYPE;
fvarWire.InitializeFVar(options, refiner, &patchTable, channel, tessFactor, (float *)(&verts[0]));
}
}
//------------------------------------------------------------------------------
// generate display IDs for Far Gregory basis
static GLMesh gregoryWire;
static void
createGregoryBasis(OpenSubdiv::Far::PatchTable const & patchTable,
std::vector<Vertex> const & vertexBuffer) {
typedef OpenSubdiv::Far::PatchDescriptor PatchDescriptor;
int npatches = 0;
int patchArray = 0;
for (int array=0; array<(int)patchTable.GetNumPatchArrays(); ++array) {
if (patchTable.GetPatchArrayDescriptor(array).GetType()==
PatchDescriptor::GREGORY_BASIS) {
npatches = patchTable.GetNumPatches(array);
patchArray = array;
break;
}
}
int nedges = npatches * 20;
std::vector<int> vertsperedge(nedges), edgeindices(nedges*2);
for (int patch=0; patch<npatches; ++patch) {
static int basisedges[40] = { 0, 1, 0, 2, 1, 3, 2, 4,
5, 6, 5, 7, 6, 8, 7, 9,
10, 11, 10, 12, 11, 13, 12, 14,
15, 16, 15, 17, 16, 18, 17, 19,
1, 7, 6, 12, 11, 17, 16, 2 };
int offset = patch * 20,
* vpe = &vertsperedge[offset],
* indices = &edgeindices[patch * 40];
OpenSubdiv::Far::ConstIndexArray const cvs =
patchTable.GetPatchVertices(patchArray, patch);
for (int i=0; i<20; ++i) {
vpe[i] = 2;
indices[i*2] = cvs[basisedges[i*2]];
indices[i*2+1] = cvs[basisedges[i*2+1]];
}
//Vertex const * verts = &edgeverts[offset];
static char buf[16];
for (int i=0; i<4; ++i) {
int vid = patch * 20 + i * 5;
const float *P = vertexBuffer[cvs[i*5+0]].GetPos();
const float *Ep = vertexBuffer[cvs[i*5+1]].GetPos();
const float *Em = vertexBuffer[cvs[i*5+2]].GetPos();
const float *Fp = vertexBuffer[cvs[i*5+3]].GetPos();
const float *Fm = vertexBuffer[cvs[i*5+4]].GetPos();
snprintf(buf, 16, " P%d (%d)", i, vid);
g_font->Print3D(P, buf, 3);
snprintf(buf, 16, " Ep%d (%d)", i, vid+1);
g_font->Print3D(Ep, buf, 3);
snprintf(buf, 16, " Em%d (%d)", i, vid+2);
g_font->Print3D(Em, buf, 3);
snprintf(buf, 16, " Fp%d (%d)", i, vid+3);
g_font->Print3D(Fp, buf, 3);
snprintf(buf, 16, " Fm%d (%d)", i, vid+4);
g_font->Print3D(Fm, buf, 3);
}
}
GLMesh::Options options;
gregoryWire.Initialize(options, (int)vertexBuffer.size(), (int)vertsperedge.size(),
&vertsperedge[0], &edgeindices[0], (float const *)&vertexBuffer[0]);
}
//------------------------------------------------------------------------------
// generate display IDs for Far faces
static void
createPtexNumbers(OpenSubdiv::Far::PatchTable const & patchTable,
std::vector<Vertex> const & vertexBuffer) {
typedef OpenSubdiv::Far::PatchDescriptor Descriptor;
static char buf[16];
static int regular[4] = {5, 6, 9, 10},
gregory[4] = {0, 1, 2, 3};
for (int array=0; array<(int)patchTable.GetNumPatchArrays(); ++array) {
for (int patch=0; patch<(int)patchTable.GetNumPatches(array); ++patch) {
OpenSubdiv::Far::ConstIndexArray const cvs =
patchTable.GetPatchVertices(array, patch);
int * remap = 0;
switch (patchTable.GetPatchArrayDescriptor(array).GetType()) {
case Descriptor::REGULAR: remap = regular; break;
case Descriptor::GREGORY:
case Descriptor::GREGORY_BOUNDARY:
case Descriptor::GREGORY_BASIS: remap = gregory; break;
default:
assert(0);
}
Vertex center(0.0f, 0.0f, 0.0f);
for (int k=0; k<4; ++k) {
center.AddWithWeight(vertexBuffer[cvs[remap[k]]], 0.25f);
}
snprintf(buf, 16, "%d", patchTable.GetPatchParam(array, patch).GetFaceId());
g_font->Print3D(center.GetPos(), buf, 1);
}
}
}
//------------------------------------------------------------------------------
static void
createFarGLMesh(Shape * shape, int maxlevel) {
Stopwatch s;
s.Start();
using namespace OpenSubdiv;
// create Far mesh (topology)
Sdc::SchemeType sdctype = GetSdcType(*shape);
Sdc::Options sdcoptions = GetSdcOptions(*shape);
sdcoptions.SetFVarLinearInterpolation(g_fvarInterpolation);
Far::TopologyRefiner * refiner =
Far::TopologyRefinerFactory<Shape>::Create(*shape,
Far::TopologyRefinerFactory<Shape>::Options(sdctype, sdcoptions));
if (g_Adaptive) {
Far::TopologyRefiner::AdaptiveOptions options(maxlevel);
options.useSingleCreasePatch = false;
refiner->RefineAdaptive(options);
} else {
Far::TopologyRefiner::UniformOptions options(maxlevel);
options.fullTopologyInLastLevel = true;
refiner->RefineUniform(options);
}
int numTotalVerts = refiner->GetNumVerticesTotal();
//
// Patch table
//
std::vector<Vertex> fvarBuffer;
Far::PatchTable * patchTable = 0;
bool createFVarWire = g_FarDrawFVarPatches || g_FarDrawFVarVerts;
if (g_Adaptive) {
Far::PatchTableFactory::Options options;
options.generateFVarTables = createFVarWire;
options.shareEndCapPatchPoints = false;
patchTable =
Far::PatchTableFactory::Create(*refiner, options);
// increase vertex buffer for the additional local points
if (patchTable->GetLocalPointStencilTable()) {
numTotalVerts += patchTable->GetLocalPointStencilTable()->GetNumStencils();
}
g_numPatches = patchTable->GetNumPatchesTotal();
g_maxValence = patchTable->GetMaxValence();
if (createFVarWire) {
// interpolate fvar values
int channel = 0;
// XXXX should use a (u,v) vertex class
fvarBuffer.resize(refiner->GetNumFVarValuesTotal(channel), 0);
Vertex * values = &fvarBuffer[0];
int nCoarseValues = refiner->GetLevel(0).GetNumFVarValues(channel);
for (int i=0; i<nCoarseValues; ++i) {
float const * ptr = &shape->uvs[i*2];
values[i].SetPosition(ptr[0], ptr[1], 0.0f);
}
int lastLevel = refiner->GetMaxLevel();
Vertex * src = values;
for (int level = 1; level <= lastLevel; ++level) {
Vertex * dst = src + refiner->GetLevel(level-1).GetNumFVarValues(channel);
Far::PrimvarRefiner(*refiner).InterpolateFaceVarying(level, src, dst, channel);
src = dst;
}
}
}
//
// interpolate vertices
//
// create vertex primvar data buffer
std::vector<Vertex> vertexBuffer(numTotalVerts);
Vertex * verts = &vertexBuffer[0];
// copy coarse vertices positions
int ncoarseverts = shape->GetNumVertices();
for (int i=0; i<ncoarseverts; ++i) {
float * ptr = &shape->verts[i*3];
verts[i].SetPosition(ptr[0], ptr[1], ptr[2]);
}
s.Start();
if (g_useStencils) {
//
// Stencil interpolation
//
Far::StencilTable const * stencilTable = 0;
Far::StencilTableFactory::Options options;
options.generateOffsets=true;
options.generateIntermediateLevels=true;
stencilTable = Far::StencilTableFactory::Create(*refiner, options);
// append local point stencils if needed
if (patchTable && patchTable->GetLocalPointStencilTable()) {
if (Far::StencilTable const * stencilTableWithLocalPoints =
Far::StencilTableFactory::AppendLocalPointStencilTable(
*refiner, stencilTable,
patchTable->GetLocalPointStencilTable())) {
delete stencilTable;
stencilTable = stencilTableWithLocalPoints;
}
}
//
// apply stencils
//
stencilTable->UpdateValues(verts, verts + ncoarseverts);
delete stencilTable;
} else {
//
// TopologyRefiner interpolation
//
// populate buffer with Far interpolated vertex data
int lastLevel = refiner->GetMaxLevel();
Vertex * src = verts;
for (int level = 1; level <= lastLevel; ++level) {
Vertex * dst = src + refiner->GetLevel(level-1).GetNumVertices();
Far::PrimvarRefiner(*refiner).Interpolate(level, src, dst);
src = dst;
}
//printf(" %f ms (interpolate)\n", float(s.GetElapsed())*1000.0f);
//printf(" %f ms (total)\n", float(s.GetTotalElapsed())*1000.0f);
// TODO: endpatch basis conversion comes here
}
s.Stop();
//
// Misc display
//
//printf("Far time: %f ms (topology)\n", float(s.GetElapsed())*1000.0f);
if (g_FarDrawVertIDs) {
createVertNumbers(*refiner, vertexBuffer);
}
if (g_FarDrawFaceIDs) {
createFaceNumbers(*refiner, vertexBuffer);
}
if (g_FarDrawPtexIDs && patchTable) {
createPtexNumbers(*patchTable, vertexBuffer);
}
if (g_Adaptive) {
createPatchNumbers(*patchTable, vertexBuffer);
}
if (g_Adaptive && g_FarDrawGregogyBasis) {
createGregoryBasis(*patchTable, vertexBuffer);
}
if (g_Adaptive && createFVarWire) {
createFVarPatches(*refiner, *patchTable, fvarBuffer);
createFVarPatchNumbers(*patchTable, fvarBuffer);
}
createEdgeNumbers(*refiner, vertexBuffer, g_FarDrawEdgeIDs!=0, g_FarDrawEdgeSharpness!=0);
GLMesh::Options options;
options.vertColorMode=g_Adaptive ? GLMesh::VERTCOLOR_BY_LEVEL : GLMesh::VERTCOLOR_BY_SHARPNESS;
options.edgeColorMode=g_Adaptive ? GLMesh::EDGECOLOR_BY_PATCHTYPE : GLMesh::EDGECOLOR_BY_SHARPNESS;
options.faceColorMode=g_Adaptive ? GLMesh::FACECOLOR_BY_PATCHTYPE :GLMesh::FACECOLOR_SOLID;
g_far_glmesh.Initialize(options, *refiner, patchTable, (float *)&verts[0]);
if (g_Adaptive) {
g_far_glmesh.SetDiffuseColor(1.0f, 1.0f, 1.0f, 1.0f);
} else {
g_far_glmesh.SetDiffuseColor(0.75f, 0.9f, 1.0f, 1.0f);
}
//setFaceColors(*refiner);
g_far_glmesh.InitializeDeviceBuffers();
// save coarse topology (used for control mesh display)
g_controlMeshDisplay.SetTopology(refiner->GetLevel(0));
// save coarse points in a GPU buffer (used for control mesh display)
if (! g_controlMeshDisplayVBO) {
glGenBuffers(1, &g_controlMeshDisplayVBO);
}
glBindBuffer(GL_ARRAY_BUFFER, g_controlMeshDisplayVBO);
glBufferData(GL_ARRAY_BUFFER,
3*sizeof(float)*vertexBuffer.size(), (GLfloat*)&vertexBuffer[0],
GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
// compute model bounds
float min[3] = { FLT_MAX, FLT_MAX, FLT_MAX};
float max[3] = {-FLT_MAX, -FLT_MAX, -FLT_MAX};
for (size_t i=0; i <vertexBuffer.size(); ++i) {
for(int j=0; j<3; ++j) {
float v = vertexBuffer[i].GetPos()[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);
delete refiner;
delete patchTable;
}
//------------------------------------------------------------------------------
static void
createMeshes(ShapeDesc const & desc, int maxlevel) {
if (! g_font) {
g_font = new GLFont(g_hud.GetFontTexture());
}
g_font->Clear();
Shape * shape = Shape::parseObj(desc.data.c_str(), desc.scheme);
createFarGLMesh(shape, maxlevel);
delete shape;
}
//------------------------------------------------------------------------------
static void
fitFrame() {
g_pan[0] = g_pan[1] = 0;
g_dolly = g_size;
}
//------------------------------------------------------------------------------
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, 0.1f, 500.0f);
multMatrix(g_transformData.ModelViewProjectionMatrix,
g_transformData.ModelViewMatrix,
g_transformData.ProjectionMatrix);
glEnable(GL_DEPTH_TEST);
s.Stop();
float drawCpuTime = float(s.GetElapsed() * 1000.0f);
glBindVertexArray(0);
glUseProgram(0);
// primitive counting
glBeginQuery(GL_PRIMITIVES_GENERATED, g_queries[0]);
#if defined(GL_VERSION_3_3)
glBeginQuery(GL_TIME_ELAPSED, g_queries[1]);
#endif
// Update and bind transform state ---------------------
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);
// 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);
// Draw stuff ------------------------------------------
// control mesh edges & verts
g_controlMeshDisplay.Draw(g_controlMeshDisplayVBO, 3*sizeof(float),
g_transformData.ModelViewProjectionMatrix);
// Far mesh
GLMesh::Component comp=GLMesh::COMP_VERT;
switch (g_FarDrawMode) {
case kDRAW_VERTICES : comp=GLMesh::COMP_VERT; break;
case kDRAW_WIREFRAME : comp=GLMesh::COMP_EDGE; break;
case kDRAW_FACES : comp=GLMesh::COMP_FACE; break;
default:
assert(0);
}
g_far_glmesh.Draw(comp, g_transformUB, g_lightingUB);
if (g_Adaptive && g_FarDrawGregogyBasis) {
gregoryWire.Draw(GLMesh::COMP_VERT, g_transformUB, g_lightingUB);
gregoryWire.Draw(GLMesh::COMP_EDGE, g_transformUB, g_lightingUB);
}
if (g_Adaptive && g_FarDrawFVarVerts) {
fvarVerts.Draw(GLMesh::COMP_VERT, g_transformUB, g_lightingUB);
}
if (g_Adaptive && g_FarDrawFVarPatches) {
fvarWire.Draw(GLMesh::COMP_EDGE, g_transformUB, g_lightingUB);
}
assert(g_font);
g_font->Draw(g_transformUB);
// -----------------------------------------------------
glEndQuery(GL_PRIMITIVES_GENERATED);
#if defined(GL_VERSION_3_3)
glEndQuery(GL_TIME_ELAPSED);
#endif
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();
{ // display selected patch info
static char const * patchTypes[13] = { "undefined", "points", "lines",
"quads", "tris", "loop", "regular", "single crease", "boundary", "corner",
"gregory", "gregory-boundary", "gregory-basis" },
* format0 = "Current Patch : %d/%d (%s - %d CVs)",
* format1 = "Current Patch : %d/%d (%s - %d CVs) fvar: (%s - %d CVs)";
if (g_Adaptive && g_currentPatch) {
if (g_FarDrawFVarPatches || g_FarDrawFVarVerts) {
g_hud.DrawString(g_width/2-200, 225, format1,
g_currentPatch-1, g_numPatches-1,
patchTypes[g_currentPatchDesc.GetType()],
g_currentPatchDesc.GetNumControlVertices(),
patchTypes[g_currentFVarPatchType],
OpenSubdiv::Far::PatchDescriptor::GetNumFVarControlVertices(
g_currentFVarPatchType));
} else {
g_hud.DrawString(g_width/2-200, 225, format0,
g_currentPatch-1, g_numPatches-1,
patchTypes[g_currentPatchDesc.GetType()],
g_currentPatchDesc.GetNumControlVertices(),
patchTypes[g_currentFVarPatchType]);
}
}
}
static char const * schemeNames[3] = { "BILINEAR", "CATMARK", "LOOP" };
g_hud.DrawString(10, -140, "Primitives : %d", numPrimsGenerated);
g_hud.DrawString(10, -120, "Scheme : %s", schemeNames[ g_shapes[g_currentShape].scheme ]);
g_hud.DrawString(10, -100, "GPU Kernel : %.3f ms", g_gpuTime);
g_hud.DrawString(10, -80, "CPU Kernel : %.3f ms", g_cpuTime);
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
motion(GLFWwindow *, double dx, double dy) {
int x=(int)dx, y=(int)dy;
if (g_hud.MouseCapture()) {
// check gui
g_hud.MouseMotion(x, y);
} else 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]) ||
(!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
mouse(GLFWwindow *, int button, int state, int /* mods */) {
if (state == GLFW_RELEASE)
g_hud.MouseRelease();
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
reshape(GLFWwindow *, int width, int height) {
g_width = width;
g_height = height;
int windowWidth = g_width, windowHeight = g_height;
// window size might not match framebuffer size on a high DPI display
glfwGetWindowSize(g_window, &windowWidth, &windowHeight);
g_hud.Rebuild(windowWidth, windowHeight, width, height);
}
//------------------------------------------------------------------------------
void windowClose(GLFWwindow*) {
g_running = false;
}
//------------------------------------------------------------------------------
static void
toggleFullScreen() {
// XXXX manuelk : to re-implement from glut
}
//------------------------------------------------------------------------------
static void
rebuildOsdMeshes() {
createMeshes(g_shapes[ g_currentShape ], g_level);
}
//------------------------------------------------------------------------------
static void
keyboard(GLFWwindow *, int key, int /* scancode */, int event, int /* mods */) {
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 '[': if (g_currentPatch > 0) {
--g_currentPatch;
rebuildOsdMeshes();
} break;
case ']': if (g_currentPatch < g_numPatches) {
++g_currentPatch;
rebuildOsdMeshes();
} break;
case GLFW_KEY_TAB: toggleFullScreen(); break;
case GLFW_KEY_ESCAPE: g_hud.SetVisible(!g_hud.IsVisible()); break;
}
}
static void
callbackLevel(int l) {
g_level = l;
rebuildOsdMeshes();
}
static void
callbackModel(int m) {
if (m < 0)
m = 0;
if (m >= (int)g_shapes.size())
m = (int)g_shapes.size() - 1;
g_currentShape = m;
rebuildOsdMeshes();
}
static void
callbackAdaptive(bool checked, int /* a */)
{
g_Adaptive = checked;
rebuildOsdMeshes();
}
static void
callbackUseStencils(bool checked, int /* a */)
{
g_useStencils = checked;
rebuildOsdMeshes();
}
static void
callbackCheckBox(bool checked, int button) {
switch (button) {
case kHUD_CB_DISPLAY_CONTROL_MESH_EDGES :
g_controlMeshDisplay.SetEdgesDisplay(checked);
break;
case kHUD_CB_DISPLAY_CONTROL_MESH_VERTS :
g_controlMeshDisplay.SetVerticesDisplay(checked);
break;
case kHUD_CB_DISPLAY_PATCH_COLOR:
g_displayPatchColor = checked;
break;
}
}
static void
callbackFarDrawMode(int m) {
g_FarDrawMode = m;
}
static void
callbackDrawIDs(bool checked, int button) {
switch (button) {
case 0: g_FarDrawVertIDs = checked; break;
case 1: g_FarDrawEdgeIDs = checked; break;
case 2: g_FarDrawFaceIDs = checked; break;
case 3: g_FarDrawPtexIDs = checked; break;
case 4: g_FarDrawEdgeSharpness = checked; break;
case 5: g_FarDrawGregogyBasis = checked; break;
case 6: g_FarDrawFVarVerts = checked; break;
case 7: g_FarDrawFVarPatches = checked; break;
default: break;
}
rebuildOsdMeshes();
}
static void
callbackScale(float value, int) {
g_font->SetFontScale(value);
}
static void
callbackFVarTess(float value, int) {
g_FarDrawFVarPatchTess = (int)value;
rebuildOsdMeshes();
}
static void
callbackFVarInterpolation(int b) {
switch (b) {
case SdcOptions::FVAR_LINEAR_NONE :
g_fvarInterpolation = SdcOptions::FVAR_LINEAR_NONE; break;
case SdcOptions::FVAR_LINEAR_CORNERS_ONLY :
g_fvarInterpolation = SdcOptions::FVAR_LINEAR_CORNERS_ONLY; break;
case SdcOptions::FVAR_LINEAR_CORNERS_PLUS1 :
g_fvarInterpolation = SdcOptions::FVAR_LINEAR_CORNERS_PLUS1; break;
case SdcOptions::FVAR_LINEAR_CORNERS_PLUS2 :
g_fvarInterpolation = SdcOptions::FVAR_LINEAR_CORNERS_PLUS2; break;
case SdcOptions::FVAR_LINEAR_BOUNDARIES :
g_fvarInterpolation = SdcOptions::FVAR_LINEAR_BOUNDARIES; break;
case SdcOptions::FVAR_LINEAR_ALL :
g_fvarInterpolation = SdcOptions::FVAR_LINEAR_ALL; break;
}
rebuildOsdMeshes();
}
//------------------------------------------------------------------------------
static void
initHUD() {
int windowWidth = g_width, windowHeight = g_height;
int frameBufferWidth = g_width, frameBufferHeight = g_height;
// window size might not match framebuffer size on a high DPI display
glfwGetWindowSize(g_window, &windowWidth, &windowHeight);
glfwGetFramebufferSize(g_window, &frameBufferWidth, &frameBufferHeight);
g_hud.Init(windowWidth, windowHeight, frameBufferWidth, frameBufferHeight);
g_hud.AddCheckBox("Control edges (H)", g_controlMeshDisplay.GetEdgesDisplay(),
10, 10, callbackCheckBox, kHUD_CB_DISPLAY_CONTROL_MESH_EDGES, 'h');
g_hud.AddCheckBox("Control vertices (J)", g_controlMeshDisplay.GetVerticesDisplay(),
10, 30, callbackCheckBox, kHUD_CB_DISPLAY_CONTROL_MESH_VERTS, 'j');
int pulldown = g_hud.AddPullDown("Far Draw Mode (W)", 10, 195, 250, callbackFarDrawMode, 'w');
g_hud.AddPullDownButton(pulldown, "Vertices", 0, g_FarDrawMode==kDRAW_VERTICES);
g_hud.AddPullDownButton(pulldown, "Wireframe", 1, g_FarDrawMode==kDRAW_WIREFRAME);
g_hud.AddPullDownButton(pulldown, "Faces", 2, g_FarDrawMode==kDRAW_FACES);
g_hud.AddCheckBox("Vert IDs", g_FarDrawVertIDs!=0, 10, 215, callbackDrawIDs, 0);
g_hud.AddCheckBox("Edge IDs", g_FarDrawEdgeIDs!=0, 10, 235, callbackDrawIDs, 1);
g_hud.AddCheckBox("Face IDs", g_FarDrawFaceIDs!=0, 10, 255, callbackDrawIDs, 2);
g_hud.AddCheckBox("Ptex IDs", g_FarDrawPtexIDs!=0, 10, 275, callbackDrawIDs, 3);
g_hud.AddCheckBox("Edge Sharp", g_FarDrawEdgeSharpness!=0, 10, 295, callbackDrawIDs, 4);
g_hud.AddCheckBox("Gregory Basis", g_FarDrawGregogyBasis!=0, 10, 315, callbackDrawIDs, 5);
g_hud.AddCheckBox("Use Stencils (S)", g_useStencils!=0, 10, 350, callbackUseStencils, 0, 's');
g_hud.AddCheckBox("Adaptive (`)", g_Adaptive!=0, 10, 370, callbackAdaptive, 0, '`');
g_hud.AddSlider("Font Scale", 0.0f, 0.1f, 0.01f,
-900, -50, 100, false, callbackScale, 0);
for (int i = 1; i < 11; ++i) {
char level[16];
sprintf(level, "Lv. %d", i);
g_hud.AddRadioButton(3, level, i==g_level, 10, 380+i*20, callbackLevel, i, '0'+(i%10));
}
int shapes_pulldown = g_hud.AddPullDown("Shape (N)", -300, 10, 300, callbackModel, 'n');
for (int i = 0; i < (int)g_shapes.size(); ++i) {
g_hud.AddPullDownButton(shapes_pulldown, g_shapes[i].name.c_str(),i, (g_currentShape==i));
}
g_hud.AddCheckBox("FVar Verts", g_FarDrawFVarVerts!=0, 300, 10, callbackDrawIDs, 10);
g_hud.AddCheckBox("FVar Patches", g_FarDrawFVarPatches!=0, 300, 30, callbackDrawIDs, 11);
g_hud.AddSlider("FVar Tess", 1.0f, 10.0f, (float)g_FarDrawFVarPatchTess,
300, 50, 25, true, callbackFVarTess, 0);
int fvar_pulldown = g_hud.AddPullDown("FVar Interpolation (i)", 300, 90, 250, callbackFVarInterpolation, 'i');
g_hud.AddPullDownButton(fvar_pulldown, "FVAR_LINEAR_NONE",
SdcOptions::FVAR_LINEAR_NONE, g_fvarInterpolation==SdcOptions::FVAR_LINEAR_NONE);
g_hud.AddPullDownButton(fvar_pulldown, "FVAR_LINEAR_CORNERS_ONLY",
SdcOptions::FVAR_LINEAR_CORNERS_ONLY, g_fvarInterpolation==SdcOptions::FVAR_LINEAR_CORNERS_ONLY);
g_hud.AddPullDownButton(fvar_pulldown, "FVAR_LINEAR_CORNERS_PLUS1",
SdcOptions::FVAR_LINEAR_CORNERS_PLUS1, g_fvarInterpolation==SdcOptions::FVAR_LINEAR_CORNERS_PLUS1);
g_hud.AddPullDownButton(fvar_pulldown, "FVAR_LINEAR_CORNERS_PLUS2",
SdcOptions::FVAR_LINEAR_CORNERS_PLUS2, g_fvarInterpolation==SdcOptions::FVAR_LINEAR_CORNERS_PLUS2);
g_hud.AddPullDownButton(fvar_pulldown, "FVAR_LINEAR_BOUNDARIES",
SdcOptions::FVAR_LINEAR_BOUNDARIES, g_fvarInterpolation==SdcOptions::FVAR_LINEAR_BOUNDARIES);
g_hud.AddPullDownButton(fvar_pulldown, "FVAR_LINEAR_ALL",
SdcOptions::FVAR_LINEAR_ALL, g_fvarInterpolation==SdcOptions::FVAR_LINEAR_ALL);
if (! g_font) {
g_font = new GLFont( g_hud.GetFontTexture() );
}
}
//------------------------------------------------------------------------------
static void
initGL() {
glClearColor(0.1f, 0.1f, 0.1f, 0.0f);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
glCullFace(GL_BACK);
glEnable(GL_CULL_FACE);
glGenQueries(2, g_queries);
}
//------------------------------------------------------------------------------
static void
uninitGL() {
glDeleteQueries(2, g_queries);
}
//------------------------------------------------------------------------------
static void
idle() {
if (g_repeatCount != 0 && g_frame >= g_repeatCount)
g_running = 0;
}
//------------------------------------------------------------------------------
int main(int argc, char ** argv)
{
bool fullscreen = false;
std::string str;
for (int i = 1; i < argc; ++i) {
if (!strcmp(argv[i], "-d"))
g_level = atoi(argv[++i]);
else if (!strcmp(argv[i], "-c"))
g_repeatCount = atoi(argv[++i]);
else if (!strcmp(argv[i], "-f"))
fullscreen = true;
else {
std::ifstream ifs(argv[1]);
if (ifs) {
std::stringstream ss;
ss << ifs.rdbuf();
ifs.close();
str = ss.str();
g_shapes.push_back(ShapeDesc(argv[1], str.c_str(), kCatmark));
}
}
}
initShapes();
if (! glfwInit()) {
printf("Failed to initialize GLFW\n");
return 1;
}
static const char windowTitle[] = "OpenSubdiv farViewer";
GLUtils::SetMinimumGLVersion();
if (fullscreen) {
g_primary = glfwGetPrimaryMonitor();
// apparently glfwGetPrimaryMonitor fails under linux : if no primary,
// settle for the first one in the list
if (! g_primary) {
int count=0;
GLFWmonitor ** monitors = glfwGetMonitors(&count);
if (count)
g_primary = monitors[0];
}
if (g_primary) {
GLFWvidmode const * vidmode = glfwGetVideoMode(g_primary);
g_width = vidmode->width;
g_height = vidmode->height;
}
}
if (! (g_window=glfwCreateWindow(g_width, g_height, windowTitle,
fullscreen && g_primary ? g_primary : 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);
GLUtils::PrintGLVersion();
#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
initGL();
glfwSwapInterval(0);
initHUD();
rebuildOsdMeshes();
GLUtils::CheckGLErrors("before loop");
while (g_running) {
idle();
display();
glfwPollEvents();
glfwSwapBuffers(g_window);
glFinish();
}
uninitGL();
glfwTerminate();
}
//------------------------------------------------------------------------------
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