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OpenSubdiv/examples/limitEval/main.cpp
David G Yu 7d16bffccb Continued cleanup of OpenGL dependencies
2013-06-26 00:52:57 -07:00

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//
// Copyright (C) Pixar. All rights reserved.
//
// This license governs use of the accompanying software. If you
// use the software, you accept this license. If you do not accept
// the license, do not use the software.
//
// 1. Definitions
// The terms "reproduce," "reproduction," "derivative works," and
// "distribution" have the same meaning here as under U.S.
// copyright law. A "contribution" is the original software, or
// any additions or changes to the software.
// A "contributor" is any person or entity that distributes its
// contribution under this license.
// "Licensed patents" are a contributor's patent claims that read
// directly on its contribution.
//
// 2. Grant of Rights
// (A) Copyright Grant- Subject to the terms of this license,
// including the license conditions and limitations in section 3,
// each contributor grants you a non-exclusive, worldwide,
// royalty-free copyright license to reproduce its contribution,
// prepare derivative works of its contribution, and distribute
// its contribution or any derivative works that you create.
// (B) Patent Grant- Subject to the terms of this license,
// including the license conditions and limitations in section 3,
// each contributor grants you a non-exclusive, worldwide,
// royalty-free license under its licensed patents to make, have
// made, use, sell, offer for sale, import, and/or otherwise
// dispose of its contribution in the software or derivative works
// of the contribution in the software.
//
// 3. Conditions and Limitations
// (A) No Trademark License- This license does not grant you
// rights to use any contributor's name, logo, or trademarks.
// (B) If you bring a patent claim against any contributor over
// patents that you claim are infringed by the software, your
// patent license from such contributor to the software ends
// automatically.
// (C) If you distribute any portion of the software, you must
// retain all copyright, patent, trademark, and attribution
// notices that are present in the software.
// (D) If you distribute any portion of the software in source
// code form, you may do so only under this license by including a
// complete copy of this license with your distribution. If you
// distribute any portion of the software in compiled or object
// code form, you may only do so under a license that complies
// with this license.
// (E) The software is licensed "as-is." You bear the risk of
// using it. The contributors give no express warranties,
// guarantees or conditions. You may have additional consumer
// rights under your local laws which this license cannot change.
// To the extent permitted under your local laws, the contributors
// exclude the implied warranties of merchantability, fitness for
// a particular purpose and non-infringement.
//
#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
#if defined(GLFW_VERSION_3)
#include <GLFW/glfw3.h>
GLFWwindow* g_window=0;
GLFWmonitor* g_primary=0;
#else
#include <GL/glfw.h>
#endif
#include <osd/cpuComputeContext.h>
#include <osd/cpuComputeController.h>
#include <osd/cpuEvalLimitContext.h>
#include <osd/cpuEvalLimitController.h>
#include <osd/cpuVertexBuffer.h>
#include <osd/cpuGLVertexBuffer.h>
#include <osd/error.h>
#include <osd/drawContext.h>
#include <osd/mesh.h>
#include <osd/vertex.h>
#include <common/shape_utils.h>
#include "../common/stopwatch.h"
#include "../common/simple_math.h"
#include "../common/gl_hud.h"
#include <cfloat>
#include <vector>
#include <fstream>
#include <sstream>
#include <stdlib.h>
#ifdef OPENSUBDIV_HAS_OPENMP
#include <omp.h>
#endif
using namespace OpenSubdiv;
//------------------------------------------------------------------------------
typedef HbrMesh<OsdVertex> OsdHbrMesh;
typedef HbrVertex<OsdVertex> OsdHbrVertex;
typedef HbrFace<OsdVertex> OsdHbrFace;
typedef HbrHalfedge<OsdVertex> OsdHbrHalfedge;
typedef FarMesh<OsdVertex> OsdFarMesh;
typedef FarMeshFactory<OsdVertex> OsdFarMeshFactory;
typedef FarSubdivisionTables<OsdVertex> OsdFarMeshSubdivision;
//------------------------------------------------------------------------------
struct SimpleShape {
std::string name;
Scheme scheme;
std::string data;
SimpleShape() { }
SimpleShape( std::string const & idata, char const * iname, Scheme ischeme )
: name(iname), scheme(ischeme), data(idata) { }
};
std::vector<SimpleShape> g_defaultShapes;
std::vector<float> g_orgPositions,
g_positions,
g_varyingColors;
int g_currentShape = 0,
g_level = 3,
g_numElements = 3;
std::vector<int> g_coarseEdges;
std::vector<float> g_coarseEdgeSharpness;
std::vector<float> g_coarseVertexSharpness;
enum DrawMode { kUV=0,
kVARYING=1,
kFACEVARYING=2 };
int g_running = 1,
g_width = 1024,
g_height = 1024,
g_fullscreen = 0,
g_drawCageEdges = 1,
g_drawCageVertices = 1,
g_drawMode = kUV,
g_prev_x = 0,
g_prev_y = 0,
g_mbutton[3] = {0, 0, 0},
g_frame=0,
g_freeze=0,
g_repeatCount;
float g_rotate[2] = {0, 0},
g_dolly = 5,
g_pan[2] = {0, 0},
g_center[3] = {0, 0, 0},
g_size = 0,
g_moveScale = 0.0f;
GLuint g_transformUB = 0,
g_transformBinding = 0;
struct Transform {
float ModelViewMatrix[16];
float ProjectionMatrix[16];
float ModelViewProjectionMatrix[16];
} g_transformData;
// performance
float g_evalTime = 0;
float g_computeTime = 0;
Stopwatch g_fpsTimer;
//------------------------------------------------------------------------------
static void
initializeShapes( ) {
#include <shapes/catmark_cube_corner0.h>
g_defaultShapes.push_back(SimpleShape(catmark_cube_corner0, "catmark_cube_corner0", kCatmark));
#include <shapes/catmark_cube_corner1.h>
g_defaultShapes.push_back(SimpleShape(catmark_cube_corner1, "catmark_cube_corner1", kCatmark));
#include <shapes/catmark_cube_corner2.h>
g_defaultShapes.push_back(SimpleShape(catmark_cube_corner2, "catmark_cube_corner2", kCatmark));
#include <shapes/catmark_cube_corner3.h>
g_defaultShapes.push_back(SimpleShape(catmark_cube_corner3, "catmark_cube_corner3", kCatmark));
#include <shapes/catmark_cube_corner4.h>
g_defaultShapes.push_back(SimpleShape(catmark_cube_corner4, "catmark_cube_corner4", kCatmark));
#include <shapes/catmark_cube_creases0.h>
g_defaultShapes.push_back(SimpleShape(catmark_cube_creases0, "catmark_cube_creases0", kCatmark));
#include <shapes/catmark_cube_creases1.h>
g_defaultShapes.push_back(SimpleShape(catmark_cube_creases1, "catmark_cube_creases1", kCatmark));
#include <shapes/catmark_cube.h>
g_defaultShapes.push_back(SimpleShape(catmark_cube, "catmark_cube", kCatmark));
#include <shapes/catmark_dart_edgecorner.h>
g_defaultShapes.push_back(SimpleShape(catmark_dart_edgecorner, "catmark_dart_edgecorner", kCatmark));
#include <shapes/catmark_dart_edgeonly.h>
g_defaultShapes.push_back(SimpleShape(catmark_dart_edgeonly, "catmark_dart_edgeonly", kCatmark));
#include <shapes/catmark_edgecorner.h>
g_defaultShapes.push_back(SimpleShape(catmark_edgecorner ,"catmark_edgecorner", kCatmark));
#include <shapes/catmark_edgeonly.h>
g_defaultShapes.push_back(SimpleShape(catmark_edgeonly, "catmark_edgeonly", kCatmark));
#include <shapes/catmark_gregory_test1.h>
g_defaultShapes.push_back(SimpleShape(catmark_gregory_test1, "catmark_gregory_test1", kCatmark));
#include <shapes/catmark_gregory_test2.h>
g_defaultShapes.push_back(SimpleShape(catmark_gregory_test2, "catmark_gregory_test2", kCatmark));
#include <shapes/catmark_gregory_test3.h>
g_defaultShapes.push_back(SimpleShape(catmark_gregory_test3, "catmark_gregory_test3", kCatmark));
#include <shapes/catmark_gregory_test4.h>
g_defaultShapes.push_back(SimpleShape(catmark_gregory_test4, "catmark_gregory_test4", kCatmark));
#include <shapes/catmark_hole_test1.h>
g_defaultShapes.push_back(SimpleShape(catmark_hole_test1, "catmark_hole_test1", kCatmark));
#include <shapes/catmark_hole_test2.h>
g_defaultShapes.push_back(SimpleShape(catmark_hole_test2, "catmark_hole_test2", kCatmark));
#include <shapes/catmark_pyramid_creases0.h>
g_defaultShapes.push_back(SimpleShape(catmark_pyramid_creases0, "catmark_pyramid_creases0", kCatmark));
#include <shapes/catmark_pyramid_creases1.h>
g_defaultShapes.push_back(SimpleShape(catmark_pyramid_creases1, "catmark_pyramid_creases1", kCatmark));
#include <shapes/catmark_pyramid.h>
g_defaultShapes.push_back(SimpleShape(catmark_pyramid, "catmark_pyramid", kCatmark));
#include <shapes/catmark_tent_creases0.h>
g_defaultShapes.push_back(SimpleShape(catmark_tent_creases0, "catmark_tent_creases0", kCatmark));
#include <shapes/catmark_tent_creases1.h>
g_defaultShapes.push_back(SimpleShape(catmark_tent_creases1, "catmark_tent_creases1", kCatmark));
#include <shapes/catmark_tent.h>
g_defaultShapes.push_back(SimpleShape(catmark_tent, "catmark_tent", kCatmark));
#include <shapes/catmark_torus.h>
g_defaultShapes.push_back(SimpleShape(catmark_torus, "catmark_torus", kCatmark));
#include <shapes/catmark_torus_creases0.h>
g_defaultShapes.push_back(SimpleShape(catmark_torus_creases0, "catmark_torus_creases0", kCatmark));
#include <shapes/catmark_square_hedit0.h>
g_defaultShapes.push_back(SimpleShape(catmark_square_hedit0, "catmark_square_hedit0", kCatmark));
#include <shapes/catmark_square_hedit1.h>
g_defaultShapes.push_back(SimpleShape(catmark_square_hedit1, "catmark_square_hedit1", kCatmark));
#include <shapes/catmark_square_hedit2.h>
g_defaultShapes.push_back(SimpleShape(catmark_square_hedit2, "catmark_square_hedit2", kCatmark));
#include <shapes/catmark_square_hedit3.h>
g_defaultShapes.push_back(SimpleShape(catmark_square_hedit3, "catmark_square_hedit3", kCatmark));
#include <shapes/catmark_square_hedit4.h>
g_defaultShapes.push_back(SimpleShape(catmark_square_hedit4, "catmark_square_hedit4", kCatmark));
}
//------------------------------------------------------------------------------
int g_nsamples=1000,
g_nsamplesFound=0;
GLuint g_cageEdgeVAO = 0,
g_cageEdgeVBO = 0,
g_cageVertexVAO = 0,
g_cageVertexVBO = 0,
g_samplesVAO=0;
GLhud g_hud;
//------------------------------------------------------------------------------
static int
createRandomSamples( int nfaces, int nsamples, std::vector<OsdEvalCoords> & coords ) {
coords.resize(nfaces * nsamples);
OsdEvalCoords * coord = &coords[0];
// large Pell prime number
srand( static_cast<int>(2147483647) );
for (int i=0; i<nfaces; ++i) {
for (int j=0; j<nsamples; ++j) {
coord->face = i;
coord->u = (float)rand()/(float)RAND_MAX;
coord->v = (float)rand()/(float)RAND_MAX;
++coord;
}
}
return (int)coords.size();
}
//------------------------------------------------------------------------------
static int
createRandomVaryingColors( int nverts, std::vector<float> & colors ) {
colors.resize( nverts * 3 );
// large Pell prime number
srand( static_cast<int>(2147483647) );
for (int i=0; i<nverts; ++i) {
colors[i*3+0] = (float)rand()/(float)RAND_MAX;
colors[i*3+1] = (float)rand()/(float)RAND_MAX;
colors[i*3+2] = (float)rand()/(float)RAND_MAX;
}
return (int)colors.size();
}
//------------------------------------------------------------------------------
static void
createCoarseMesh( OsdHbrMesh * const hmesh, int nfaces ) {
// save coarse topology (used for coarse mesh drawing)
g_coarseEdges.clear();
g_coarseEdgeSharpness.clear();
g_coarseVertexSharpness.clear();
for(int i=0; i<nfaces; ++i) {
OsdHbrFace *face = hmesh->GetFace(i);
int nv = face->GetNumVertices();
for(int j=0; j<nv; ++j) {
g_coarseEdges.push_back(face->GetVertex(j)->GetID());
g_coarseEdges.push_back(face->GetVertex((j+1)%nv)->GetID());
g_coarseEdgeSharpness.push_back(face->GetEdge(j)->GetSharpness());
}
}
int nv = hmesh->GetNumVertices();
for(int i=0; i<nv; ++i) {
g_coarseVertexSharpness.push_back(hmesh->GetVertex(i)->GetSharpness());
}
// assign a randomly generated color for each vertex ofthe mesh
createRandomVaryingColors(nv, g_varyingColors);
}
//------------------------------------------------------------------------------
static int
getNumPtexFaces( OsdHbrMesh const * hmesh, int nfaces ) {
OsdHbrFace * lastface = hmesh->GetFace( nfaces-1 );
assert(lastface);
int result = lastface->GetPtexIndex();
result += (hmesh->GetSubdivision()->FaceIsExtraordinary(hmesh, lastface) ?
lastface->GetNumVertices() : 1);
return result;
}
//------------------------------------------------------------------------------
OsdCpuVertexBuffer * g_vertexData=0,
* g_varyingData=0;
OsdCpuComputeContext * g_computeCtx = 0;
OsdCpuComputeController g_computeCtrl;
OsdCpuEvalLimitContext * g_evalCtx = 0;
OsdCpuEvalLimitController g_evalCtrl;
OsdVertexBufferDescriptor g_idesc( /*offset*/ 0, /*legnth*/ 3, /*stride*/ 3 ),
g_odesc( /*offset*/ 0, /*legnth*/ 3, /*stride*/ 6 ),
g_vdesc( /*offset*/ 3, /*legnth*/ 3, /*stride*/ 6 ),
g_fvidesc( /*offset*/ 0, /*legnth*/ 2, /*stride*/ 2 ),
g_fvodesc( /*offset*/ 3, /*legnth*/ 2, /*stride*/ 6 );
std::vector<OsdEvalCoords> g_coords;
OsdCpuGLVertexBuffer * g_Q=0,
* g_dQu=0,
* g_dQv=0;
OsdFarMesh * g_fmesh=0;
//------------------------------------------------------------------------------
static void
updateGeom() {
int nverts = (int)g_orgPositions.size() / 3;
const float *p = &g_orgPositions[0];
float r = sin(g_frame*0.001f) * g_moveScale;
for (int i = 0; i < nverts; ++i) {
//float move = 0.05f*cosf(p[0]*20+g_frame*0.01f);
float ct = cos(p[2] * r);
float st = sin(p[2] * r);
g_positions[i*3+0] = p[0]*ct + p[1]*st;
g_positions[i*3+1] = -p[0]*st + p[1]*ct;
g_positions[i*3+2] = p[2];
p+=3;
}
// Run Compute pass to pose the control vertices ---------------------------
Stopwatch s;
s.Start();
g_vertexData->UpdateData( &g_positions[0], 0, nverts);
g_computeCtrl.Refine( g_computeCtx, g_fmesh->GetKernelBatches(), g_vertexData, g_varyingData );
s.Stop();
g_computeTime = float(s.GetElapsed() * 1000.0f);
// Run Eval pass to get the samples locations ------------------------------
s.Start();
// Reset the output buffer
g_nsamplesFound=0;
// Bind/Unbind of the vertex buffers to the context needs to happen
// outside of the parallel loop
g_evalCtx->GetVertexData().Bind( g_idesc, g_vertexData, g_odesc, g_Q, g_dQu, g_dQv );
// The varying data ends-up interleaved in the same g_Q output buffer because
// g_Q has a stride of 6 and g_vdesc sets the offset to 3, while g_odesc sets
// the offset to 0
switch (g_drawMode) {
case kVARYING : g_evalCtx->GetVaryingData().Bind( g_idesc, g_varyingData, g_vdesc, g_Q ); break;
case kFACEVARYING : g_evalCtx->GetFaceVaryingData().Bind( g_fvidesc, g_fvodesc, g_Q );
case kUV :
default : g_evalCtx->GetVaryingData().Unbind(); break;
}
#define USE_OPENMP
#if defined(OPENSUBDIV_HAS_OPENMP) and defined(USE_OPENMP)
#pragma omp parallel for
#endif
for (int i=0; i<(int)g_coords.size(); ++i) {
int n = g_evalCtrl.EvalLimitSample<OsdCpuVertexBuffer,OsdCpuGLVertexBuffer>( g_coords[i], g_evalCtx, i );
if (n) {
// point colors
switch (g_drawMode) {
case kUV : { float * color = g_Q->BindCpuBuffer() + i*g_Q->GetNumElements() + 3;
color[0] = g_coords[i].u;
color[1] = 0.0f;
color[2] = g_coords[i].v; } break;
case kVARYING : break;
case kFACEVARYING : break;
default : break;
}
#if defined(OPENSUBDIV_HAS_OPENMP) and defined(USE_OPENMP)
#pragma omp atomic
#endif
g_nsamplesFound += n;
} else {
// "hide" unfound samples (hole tags...) as a black dot at the origin
float * sample = g_Q->BindCpuBuffer() + i*g_Q->GetNumElements();
memset(sample, 0, g_Q->GetNumElements() * sizeof(float));
}
}
g_evalCtx->GetVertexData().Unbind();
switch (g_drawMode) {
case kVARYING : g_evalCtx->GetVaryingData().Unbind(); break;
case kFACEVARYING : g_evalCtx->GetFaceVaryingData().Unbind(); break;
default : break;
}
g_Q->BindVBO();
s.Stop();
g_evalTime = float(s.GetElapsed() * 1000.0f);
}
//------------------------------------------------------------------------------
static void
createOsdMesh( const std::string &shape, int level, Scheme scheme=kCatmark ) {
// Create HBR mesh
OsdHbrMesh * hmesh = simpleHbr<OsdVertex>(shape.c_str(), scheme, g_orgPositions, true);
g_positions.resize(g_orgPositions.size(),0.0f);
int nfaces = hmesh->GetNumFaces(),
nptexfaces = getNumPtexFaces(hmesh, nfaces);
// Generate sample locations
int nsamples = createRandomSamples( nptexfaces, g_nsamples, g_coords );
createCoarseMesh(hmesh, nfaces);
// Create FAR mesh
OsdFarMeshFactory factory( hmesh, level, /*adaptive*/ true);
delete g_fmesh;
g_fmesh = factory.Create(/*fvar*/ true);
int nverts = g_fmesh->GetNumVertices();
// Create v-buffer & populate w/ positions
delete g_vertexData;
g_vertexData = OsdCpuVertexBuffer::Create(3, nverts);
// Create primvar v-buffer & populate w/ colors or (u,v) data
delete g_varyingData; g_varyingData = 0;
if (g_drawMode==kVARYING) {
g_varyingData = OsdCpuVertexBuffer::Create(3, nverts);
g_varyingData->UpdateData( &g_varyingColors[0], 0, nverts);
}
// Create a Compute context, used to "pose" the vertices
delete g_computeCtx;
g_computeCtx = OsdCpuComputeContext::Create(g_fmesh);
g_computeCtrl.Refine( g_computeCtx, g_fmesh->GetKernelBatches(), g_vertexData, g_varyingData );
// Create eval context & data buffers
delete g_evalCtx;
g_evalCtx = OsdCpuEvalLimitContext::Create(g_fmesh, /*requireFVarData*/ true);
delete g_Q;
g_Q = OsdCpuGLVertexBuffer::Create(6,nsamples);
memset( g_Q->BindCpuBuffer(), 0, nsamples*6*sizeof(float));
delete g_dQu;
g_dQu = OsdCpuGLVertexBuffer::Create(6,nsamples);
memset( g_dQu->BindCpuBuffer(), 0, nsamples*6*sizeof(float));
delete g_dQv;
g_dQv = OsdCpuGLVertexBuffer::Create(6,nsamples);
memset( g_dQv->BindCpuBuffer(), 0, nsamples*6*sizeof(float));
updateGeom();
// Bind g_Q as a GL_POINTS VBO
glBindVertexArray(g_samplesVAO);
glBindBuffer(GL_ARRAY_BUFFER, g_Q->BindVBO());
glEnableVertexAttribArray(0);
glEnableVertexAttribArray(1);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof (GLfloat) * 6, 0);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, sizeof (GLfloat) * 6, (float*)12);
glBindVertexArray(0);
}
//------------------------------------------------------------------------------
struct Program
{
GLuint program;
GLuint uniformModelViewProjectionMatrix;
GLuint attrPosition;
GLuint attrColor;
} g_defaultProgram;
//------------------------------------------------------------------------------
static void
checkGLErrors(std::string const & where = "")
{
GLuint err;
while ((err = glGetError()) != GL_NO_ERROR) {
std::cerr << "GL error: "
<< (where.empty() ? "" : where + " ")
<< err << "\n";
}
}
//------------------------------------------------------------------------------
static GLuint
compileShader(GLenum shaderType, const char *source)
{
GLuint shader = glCreateShader(shaderType);
glShaderSource(shader, 1, &source, NULL);
glCompileShader(shader);
checkGLErrors("compileShader");
return shader;
}
//------------------------------------------------------------------------------
static bool
linkDefaultProgram()
{
#if defined(GL_ARB_tessellation_shader) || defined(GL_VERSION_4_0)
#define GLSL_VERSION_DEFINE "#version 400\n"
#else
#define GLSL_VERSION_DEFINE "#version 150\n"
#endif
static const char *vsSrc =
GLSL_VERSION_DEFINE
"in vec3 position;\n"
"in vec3 color;\n"
"out vec4 fragColor;\n"
"uniform mat4 ModelViewProjectionMatrix;\n"
"void main() {\n"
" fragColor = vec4(color, 1);\n"
" gl_Position = ModelViewProjectionMatrix * "
" vec4(position, 1);\n"
"}\n";
static const char *fsSrc =
GLSL_VERSION_DEFINE
"in vec4 fragColor;\n"
"out vec4 color;\n"
"void main() {\n"
" color = fragColor;\n"
"}\n";
GLuint program = glCreateProgram();
GLuint vertexShader = compileShader(GL_VERTEX_SHADER, vsSrc);
GLuint fragmentShader = compileShader(GL_FRAGMENT_SHADER, fsSrc);
glAttachShader(program, vertexShader);
glAttachShader(program, fragmentShader);
glBindAttribLocation(program, 0, "position");
glBindAttribLocation(program, 1, "color");
glBindFragDataLocation(program, 0, "color");
glLinkProgram(program);
GLint status;
glGetProgramiv(program, GL_LINK_STATUS, &status);
if (status == GL_FALSE) {
GLint infoLogLength;
glGetProgramiv(program, GL_INFO_LOG_LENGTH, &infoLogLength);
char *infoLog = new char[infoLogLength];
glGetProgramInfoLog(program, infoLogLength, NULL, infoLog);
printf("%s\n", infoLog);
delete[] infoLog;
exit(1);
}
g_defaultProgram.program = program;
g_defaultProgram.uniformModelViewProjectionMatrix =
glGetUniformLocation(program, "ModelViewProjectionMatrix");
g_defaultProgram.attrPosition = glGetAttribLocation(program, "position");
g_defaultProgram.attrColor = glGetAttribLocation(program, "color");
return true;
}
//------------------------------------------------------------------------------
static inline void
setSharpnessColor(float s, float *r, float *g, float *b)
{
// 0.0 2.0 4.0
// green --- yellow --- red
*r = std::min(1.0f, s * 0.5f);
*g = std::min(1.0f, 2.0f - s*0.5f);
*b = 0;
}
//------------------------------------------------------------------------------
static void
drawCageEdges() {
glUseProgram(g_defaultProgram.program);
glUniformMatrix4fv(g_defaultProgram.uniformModelViewProjectionMatrix,
1, GL_FALSE, g_transformData.ModelViewProjectionMatrix);
std::vector<float> vbo;
vbo.reserve(g_coarseEdges.size() * 6);
float r, g, b;
for (int i = 0; i < (int)g_coarseEdges.size(); i+=2) {
setSharpnessColor(g_coarseEdgeSharpness[i/2], &r, &g, &b);
for (int j = 0; j < 2; ++j) {
vbo.push_back(g_positions[g_coarseEdges[i+j]*3]);
vbo.push_back(g_positions[g_coarseEdges[i+j]*3+1]);
vbo.push_back(g_positions[g_coarseEdges[i+j]*3+2]);
vbo.push_back(r);
vbo.push_back(g);
vbo.push_back(b);
}
}
glBindVertexArray(g_cageEdgeVAO);
glBindBuffer(GL_ARRAY_BUFFER, g_cageEdgeVBO);
glBufferData(GL_ARRAY_BUFFER, (int)vbo.size() * sizeof(float), &vbo[0],
GL_STATIC_DRAW);
glEnableVertexAttribArray(g_defaultProgram.attrPosition);
glEnableVertexAttribArray(g_defaultProgram.attrColor);
glVertexAttribPointer(g_defaultProgram.attrPosition,
3, GL_FLOAT, GL_FALSE, sizeof (GLfloat) * 6, 0);
glVertexAttribPointer(g_defaultProgram.attrColor,
3, GL_FLOAT, GL_FALSE, sizeof (GLfloat) * 6, (void*)12);
glDrawArrays(GL_LINES, 0, (int)g_coarseEdges.size());
glBindVertexArray(0);
glUseProgram(0);
}
//------------------------------------------------------------------------------
static void
drawCageVertices() {
glUseProgram(g_defaultProgram.program);
glUniformMatrix4fv(g_defaultProgram.uniformModelViewProjectionMatrix,
1, GL_FALSE, g_transformData.ModelViewProjectionMatrix);
int numPoints = (int)g_positions.size()/3;
std::vector<float> vbo;
vbo.reserve(numPoints*6);
float r, g, b;
for (int i = 0; i < numPoints; ++i) {
switch (g_drawMode) {
case kVARYING : { r=g_varyingColors[i*3+0];
g=g_varyingColors[i*3+1];
b=g_varyingColors[i*3+2];
} break;
case kUV : { setSharpnessColor(g_coarseVertexSharpness[i], &r, &g, &b);
} break;
default : break;
}
vbo.push_back(g_positions[i*3+0]);
vbo.push_back(g_positions[i*3+1]);
vbo.push_back(g_positions[i*3+2]);
vbo.push_back(r);
vbo.push_back(g);
vbo.push_back(b);
}
glBindVertexArray(g_cageVertexVAO);
glBindBuffer(GL_ARRAY_BUFFER, g_cageVertexVBO);
glBufferData(GL_ARRAY_BUFFER, (int)vbo.size() * sizeof(float), &vbo[0],
GL_STATIC_DRAW);
glEnableVertexAttribArray(g_defaultProgram.attrPosition);
glEnableVertexAttribArray(g_defaultProgram.attrColor);
glVertexAttribPointer(g_defaultProgram.attrPosition,
3, GL_FLOAT, GL_FALSE, sizeof (GLfloat) * 6, 0);
glVertexAttribPointer(g_defaultProgram.attrColor,
3, GL_FLOAT, GL_FALSE, sizeof (GLfloat) * 6, (void*)12);
glPointSize(10.0f);
glDrawArrays(GL_POINTS, 0, numPoints);
glPointSize(1.0f);
glBindVertexArray(0);
glUseProgram(0);
}
//------------------------------------------------------------------------------
static void
drawSamples() {
glUseProgram(g_defaultProgram.program);
glUniformMatrix4fv(g_defaultProgram.uniformModelViewProjectionMatrix,
1, GL_FALSE, g_transformData.ModelViewProjectionMatrix);
glBindVertexArray(g_samplesVAO);
glPointSize(1.0f);
glDrawArrays( GL_POINTS, 0, (int)g_coords.size());
glPointSize(1.0f);
glBindVertexArray(0);
glUseProgram(0);
}
//------------------------------------------------------------------------------
static void
display() {
Stopwatch s;
s.Start();
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glViewport(0, 0, g_width, g_height);
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);
s.Stop();
float drawCpuTime = float(s.GetElapsed() * 1000.0f);
s.Start();
glFinish();
s.Stop();
float drawGpuTime = float(s.GetElapsed() * 1000.0f);
drawSamples();
if (g_drawCageEdges)
drawCageEdges();
if (g_drawCageVertices)
drawCageVertices();
if (g_hud.IsVisible()) {
g_fpsTimer.Stop();
double fps = 1.0/g_fpsTimer.GetElapsed();
g_fpsTimer.Start();
g_hud.DrawString(10, -120, "# Samples : (%d/%d)", g_nsamplesFound, g_Q->GetNumVertices());
g_hud.DrawString(10, -100, "Compute : %.3f ms", g_computeTime);
g_hud.DrawString(10, -80, "Eval : %.3f ms", g_evalTime);
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);
if (g_drawMode==kFACEVARYING and g_evalCtx->GetFVarData().empty()) {
static char msg[21] = "No Face-Varying Data";
g_hud.DrawString(g_width/2-20/2*8, g_height/2, msg);
}
g_hud.Flush();
}
glFinish();
checkGLErrors("display leave");
}
//------------------------------------------------------------------------------
static void
idle() {
if (not g_freeze)
g_frame++;
updateGeom();
if (g_repeatCount != 0 and g_frame >= g_repeatCount)
g_running = 0;
}
//------------------------------------------------------------------------------
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
#if GLFW_VERSION_MAJOR>=3
reshape(GLFWwindow *, int width, int height) {
#else
reshape(int width, int height) {
#endif
g_width = width;
g_height = height;
g_hud.Rebuild(width, height);
}
//------------------------------------------------------------------------------
#if GLFW_VERSION_MAJOR>=3
void windowClose(GLFWwindow*) {
g_running = false;
}
#else
int windowClose() {
g_running = false;
return GL_TRUE;
}
#endif
//------------------------------------------------------------------------------
static void
setSamples(bool add)
{
g_nsamples += add ? 1000 : -1000;
g_nsamples = std::max(0, g_nsamples);
createOsdMesh( g_defaultShapes[g_currentShape].data, g_level, g_defaultShapes[ g_currentShape ].scheme );
}
//------------------------------------------------------------------------------
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 '=': setSamples(true); break;
case '-': setSamples(false); break;
case GLFW_KEY_ESCAPE: g_hud.SetVisible(!g_hud.IsVisible()); break;
}
}
//------------------------------------------------------------------------------
static void
callbackError(OpenSubdiv::OsdErrorType err, const char *message)
{
printf("OsdError: %d\n", err);
printf("%s", message);
}
//------------------------------------------------------------------------------
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;
createOsdMesh( g_defaultShapes[m].data, g_level, g_defaultShapes[ g_currentShape ].scheme );
}
//------------------------------------------------------------------------------
static void
callbackLevel(int l)
{
g_level = l;
createOsdMesh( g_defaultShapes[g_currentShape].data, g_level, g_defaultShapes[ g_currentShape ].scheme );
}
//------------------------------------------------------------------------------
static void
callbackAnimate(bool checked, int m)
{
g_moveScale = checked;
}
//------------------------------------------------------------------------------
static void
callbackFreeze(bool checked, int f)
{
g_freeze = checked;
}
//------------------------------------------------------------------------------
static void
callbackDisplayCageVertices(bool checked, int d)
{
g_drawCageVertices = checked;
}
//------------------------------------------------------------------------------
static void
callbackDisplayCageEdges(bool checked, int d)
{
g_drawCageEdges = checked;
}
//------------------------------------------------------------------------------
static void
callbackDisplayVaryingColors(int mode)
{
g_drawMode = mode;
createOsdMesh( g_defaultShapes[g_currentShape].data, g_level, g_defaultShapes[ g_currentShape ].scheme );
}
//------------------------------------------------------------------------------
static void
initHUD()
{
g_hud.Init(g_width, g_height);
g_hud.AddCheckBox("Cage Edges (H)", true, 350, 10, callbackDisplayCageEdges, 0, 'h');
g_hud.AddCheckBox("Cage Verts (J)", true, 350, 30, callbackDisplayCageVertices, 0, 'j');
g_hud.AddCheckBox("Animate vertices (M)", g_moveScale != 0, 350, 50, callbackAnimate, 0, 'm');
g_hud.AddCheckBox("Freeze (spc)", false, 350, 70, callbackFreeze, 0, ' ');
g_hud.AddRadioButton(0, "(u,v)", true, 200, 10, callbackDisplayVaryingColors, kUV, 'k');
g_hud.AddRadioButton(0, "varying", false, 200, 30, callbackDisplayVaryingColors, kVARYING, 'k');
g_hud.AddRadioButton(0, "face-varying", false, 200, 50, callbackDisplayVaryingColors, kFACEVARYING, 'k');
for (int i = 1; i < 11; ++i) {
char level[16];
sprintf(level, "Lv. %d", i);
g_hud.AddRadioButton(3, level, i==g_level, 10, 170+i*20, callbackLevel, i, '0'+(i%10));
}
for (int i = 0; i < (int)g_defaultShapes.size(); ++i) {
g_hud.AddRadioButton(4, g_defaultShapes[i].name.c_str(), i==0, -220, 10+i*16, callbackModel, i, 'n');
}
}
//------------------------------------------------------------------------------
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);
glGenVertexArrays(1, &g_cageVertexVAO);
glGenVertexArrays(1, &g_cageEdgeVAO);
glGenVertexArrays(1, &g_samplesVAO);
glGenBuffers(1, &g_cageVertexVBO);
glGenBuffers(1, &g_cageEdgeVBO);
}
//------------------------------------------------------------------------------
static void
uninitGL() {
glDeleteBuffers(1, &g_cageVertexVBO);
glDeleteBuffers(1, &g_cageEdgeVBO);
glDeleteVertexArrays(1, &g_cageVertexVAO);
glDeleteVertexArrays(1, &g_cageEdgeVAO);
glDeleteVertexArrays(1, &g_samplesVAO);
}
//------------------------------------------------------------------------------
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);
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MINOR, 2);
glfwOpenWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
#else
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MAJOR, 3);
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MINOR, 2);
#endif
}
//------------------------------------------------------------------------------
int main(int argc, char **argv) {
bool fullscreen = false;
std::string str;
for (int i = 1; i < argc; ++i) {
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_defaultShapes.push_back(SimpleShape(str.c_str(), argv[1], kCatmark));
}
}
}
OsdSetErrorCallback(callbackError);
initializeShapes();
if (not glfwInit()) {
printf("Failed to initialize GLFW\n");
return 1;
}
static const char windowTitle[] = "OpenSubdiv evalViewer";
#define CORE_PROFILE
#ifdef CORE_PROFILE
setGLCoreProfile();
#endif
#if GLFW_VERSION_MAJOR>=3
if (fullscreen) {
g_primary = glfwGetPrimaryMonitor();
// apparently glfwGetPrimaryMonitor fails under linux : if no primary,
// settle for the first one in the list
if (not 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 (not (g_window=glfwCreateWindow(g_width, g_height, windowTitle,
fullscreen and g_primary ? g_primary : NULL, NULL))) {
printf("Failed to open window.\n");
glfwTerminate();
return 1;
}
glfwMakeContextCurrent(g_window);
glfwSetKeyCallback(g_window, keyboard);
glfwSetCursorPosCallback(g_window, motion);
glfwSetMouseButtonCallback(g_window, mouse);
glfwSetWindowSizeCallback(g_window, reshape);
glfwSetWindowCloseCallback(g_window, windowClose);
#else
if (glfwOpenWindow(g_width, g_height, 8, 8, 8, 8, 24, 8,
fullscreen ? GLFW_FULLSCREEN : 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
//std::string & data = g_defaultShapes[ g_currentShape ].data;
//Scheme scheme = g_defaultShapes[ g_currentShape ].scheme;
//createOsdMesh( data, g_level, scheme );
initGL();
linkDefaultProgram();
glfwSwapInterval(0);
initHUD();
callbackModel(g_currentShape);
while (g_running) {
idle();
display();
#if GLFW_VERSION_MAJOR>=3
glfwPollEvents();
glfwSwapBuffers(g_window);
#else
glfwSwapBuffers();
#endif
glFinish();
}
uninitGL();
glfwTerminate();
}
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