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0f543c6c83
OpenSubdiv/examples/glEvalLimit/glEvalLimit.cpp
George ElKoura 88cae52f85 Fixing invalid memory read error in glEvalLimit. 
We were erroneously using the number of vertices of the refined mesh to copy
data only allocated for the coarse mesh's number of vertices.
2015-04-15 13:38:59 -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/cpuComputeContext.h>
#include <osd/cpuComputeController.h>
#include <osd/cpuEvalLimitContext.h>
#include <osd/cpuEvalLimitController.h>
#include <osd/cpuVertexBuffer.h>
#include <osd/cpuGLVertexBuffer.h>
#include <osd/drawContext.h>
#include <osd/mesh.h>
#include <osd/vertex.h>
#include <far/error.h>
#include <common/vtr_utils.h>
#include "../common/stopwatch.h"
#include "../common/simple_math.h"
#include "../common/gl_hud.h"
#include "init_shapes.h"
#include "particles.h"
#include <cfloat>
#include <vector>
#include <iostream>
#include <fstream>
#include <sstream>
#include <stdlib.h>
#ifdef OPENSUBDIV_HAS_OPENMP
#include <omp.h>
#endif
using namespace OpenSubdiv;
//------------------------------------------------------------------------------
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 { kRANDOM=0,
kUV=1,
kVARYING=2,
kFACEVARYING=3 };
int g_running = 1,
g_width = 1024,
g_height = 1024,
g_fullscreen = 0,
g_drawCageEdges = 1,
g_drawCageVertices = 1,
g_drawMode = kVARYING,
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;
//------------------------------------------------------------------------------
int g_nparticles=0,
g_nsamples=101,
g_nsamplesFound=0;
bool g_randomStart=true;
GLuint g_cageEdgeVAO = 0,
g_cageEdgeVBO = 0,
g_cageVertexVAO = 0,
g_cageVertexVBO = 0,
g_samplesVAO=0;
GLhud g_hud;
//------------------------------------------------------------------------------
static void
createRandomColors(int nverts, int stride, float * colors) {
// large Pell prime number
srand( static_cast<int>(2147483647) );
for (int i=0; i<nverts; ++i) {
colors[i*stride+0] = (float)rand()/(float)RAND_MAX;
colors[i*stride+1] = (float)rand()/(float)RAND_MAX;
colors[i*stride+2] = (float)rand()/(float)RAND_MAX;
}
}
//------------------------------------------------------------------------------
static void
createCoarseMesh(OpenSubdiv::Far::TopologyRefiner const & refiner) {
typedef OpenSubdiv::Far::ConstIndexArray IndexArray;
// save coarse topology (used for coarse mesh drawing)
int nedges = refiner.GetNumEdges(0),
nverts = refiner.GetNumVertices(0);
g_coarseEdges.resize(nedges*2);
g_coarseEdgeSharpness.resize(nedges);
g_coarseVertexSharpness.resize(nverts);
for(int i=0; i<nedges; ++i) {
IndexArray verts = refiner.GetEdgeVertices(0, i);
g_coarseEdges[i*2 ]=verts[0];
g_coarseEdges[i*2+1]=verts[1];
g_coarseEdgeSharpness[i]=refiner.GetEdgeSharpness(0, i);
}
for(int i=0; i<nverts; ++i) {
g_coarseVertexSharpness[i]=refiner.GetVertexSharpness(0, i);
}
// assign a randomly generated color for each vertex ofthe mesh
g_varyingColors.resize(nverts*3);
createRandomColors(nverts, 3, &g_varyingColors[0]);
}
//------------------------------------------------------------------------------
Far::TopologyRefiner * g_topologyRefiner = 0;
Osd::CpuVertexBuffer * g_vertexData = 0,
* g_varyingData = 0;
Osd::CpuComputeContext * g_computeCtx = 0;
Osd::CpuComputeController g_computeCtrl;
Osd::CpuEvalLimitContext * g_evalCtx = 0;
Osd::CpuEvalLimitController g_evalCtrl;
Osd::VertexBufferDescriptor 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 );
Osd::CpuGLVertexBuffer * g_Q=0,
* g_dQs=0,
* g_dQt=0;
STParticles * g_particles=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.Compute(g_computeCtx, g_vertexData, g_varyingData);
s.Stop();
g_computeTime = float(s.GetElapsed() * 1000.0f);
// Run Eval pass to get the samples locations ------------------------------
s.Start();
// 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_evalCtrl.BindVaryingBuffers( g_idesc, g_varyingData, g_vdesc, g_Q ); break;
case kFACEVARYING : //g_evalCtrl.BindFacevaryingBuffers( g_fvidesc, g_fvodesc, g_Q ); break;
case kRANDOM :
case kUV :
default : g_evalCtrl.Unbind(); break;
}
// Bind/Unbind of the vertex buffers to the context needs to happen
// outside of the parallel loop
g_evalCtrl.BindVertexBuffers( g_idesc, g_vertexData, g_odesc, g_Q, g_dQs, g_dQt );
// Apply 'dynamics' update
assert(g_particles);
g_particles->Update(g_evalTime); // XXXX g_evalTime is not really elapsed time...
// Evaluate the positions of the samples on the limit surface
g_nsamplesFound=0;
#define USE_OPENMP
#if defined(OPENSUBDIV_HAS_OPENMP) and defined(USE_OPENMP)
#pragma omp parallel for
#endif
for (int i=0; i<g_nparticles; ++i) {
Osd::LimitLocation & coord = g_particles->GetPositions()[i];
int n = g_evalCtrl.EvalLimitSample( coord, g_evalCtx, i );
if (n) {
// point colors
switch (g_drawMode) {
case kUV : { float * color = g_Q->BindCpuBuffer() + i*g_Q->GetNumElements() + 3;
color[0] = coord.s;
color[1] = 0.0f;
color[2] = coord.t; } break;
case kRANDOM : // no update needed
case kVARYING :
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_evalCtrl.Unbind();
g_Q->BindVBO();
s.Stop();
g_evalTime = float(s.GetElapsed());
}
//------------------------------------------------------------------------------
static void
createOsdMesh(ShapeDesc const & shapeDesc, int level) {
Shape * shape = Shape::parseObj(shapeDesc.data.c_str(), shapeDesc.scheme);
// create Vtr mesh (topology)
OpenSubdiv::Sdc::SchemeType sdctype = GetSdcType(*shape);
OpenSubdiv::Sdc::Options sdcoptions = GetSdcOptions(*shape);
delete g_topologyRefiner;
OpenSubdiv::Far::TopologyRefiner * g_topologyRefiner =
OpenSubdiv::Far::TopologyRefinerFactory<Shape>::Create(*shape,
OpenSubdiv::Far::TopologyRefinerFactory<Shape>::Options(sdctype, sdcoptions));
g_orgPositions=shape->verts;
g_positions.resize(g_orgPositions.size(), 0.0f);
delete shape;
float speed = g_particles ? g_particles->GetSpeed() : 0.2f;
// Create the 'uv particles' manager - this class manages the limit
// location samples (ptex face index, (s,t) and updates them between frames.
// Note: the number of limit locations can be entirely arbitrary
delete g_particles;
g_particles = new STParticles(*g_topologyRefiner, g_nsamples, g_randomStart);
g_nparticles = g_particles->GetNumParticles();
g_particles->SetSpeed(speed);
createCoarseMesh(*g_topologyRefiner);
int nverts=0;
{
// Apply feature adaptive refinement to the mesh so that we can use the
// limit evaluation API features.
Far::TopologyRefiner::AdaptiveOptions options(level);
g_topologyRefiner->RefineAdaptive(options);
nverts = g_topologyRefiner->GetNumVerticesTotal();
// Generate stencil tables to update the bi-cubic patches control
// vertices after they have been re-posed (both for vertex & varying
// interpolation)
Far::StencilTablesFactory::Options soptions;
soptions.generateOffsets=true;
soptions.generateIntermediateLevels=true;
Far::StencilTables const * vertexStencils =
Far::StencilTablesFactory::Create(*g_topologyRefiner, soptions);
soptions.interpolationMode = Far::StencilTablesFactory::INTERPOLATE_VARYING;
Far::StencilTables const * varyingStencils =
Far::StencilTablesFactory::Create(*g_topologyRefiner, soptions);
// Generate bi-cubic patch tables for the limit surface
Far::PatchTablesFactory::Options poptions;
// optional : pass the vertex stencils so that the factory can generate gregory basis
// stencils (faster evaluation)
poptions.adaptiveStencilTables = vertexStencils;
poptions.adaptiveVaryingStencilTables = varyingStencils;
Far::PatchTables const * patchTables =
Far::PatchTablesFactory::Create(*g_topologyRefiner, poptions);
Far::StencilTables const *inStencils[] = {
vertexStencils, patchTables->GetEndCapVertexStencilTables()
};
Far::StencilTables const *concatStencils =
Far::StencilTablesFactory::Create(2, inStencils);
// add gregory basis vertices FIXME:
if (patchTables->GetEndCapVertexStencilTables()) {
nverts += patchTables->GetEndCapVertexStencilTables()->GetNumStencils();
}
Far::StencilTables const *concatVaryingStencils = varyingStencils;
if (varyingStencils and patchTables->GetEndCapVaryingStencilTables()) {
Far::StencilTables const *inVaryingStencils[] = {
varyingStencils, patchTables->GetEndCapVaryingStencilTables()
};
concatVaryingStencils =
Far::StencilTablesFactory::Create(2, inVaryingStencils);
}
// Create an Osd Compute context, used to "pose" the vertices with
// the stencils tables
delete g_computeCtx;
g_computeCtx = Osd::CpuComputeContext::Create(concatStencils, concatVaryingStencils);
// Create a limit Eval context with the patch tables
delete g_evalCtx;
g_evalCtx = Osd::CpuEvalLimitContext::Create(*patchTables);
}
{ // Create vertex primvar buffer for the CVs
delete g_vertexData;
g_vertexData = Osd::CpuVertexBuffer::Create(3, nverts);
// Create varying primvar buffer for the CVs with random colors.
// These are immediately interpolated (once) and saved for display.
delete g_varyingData; g_varyingData = 0;
if (g_drawMode==kVARYING) {
g_varyingData = Osd::CpuVertexBuffer::Create(3, nverts);
g_varyingData->UpdateData(
&g_varyingColors[0], 0, g_varyingColors.size()/3 );
}
// Create output buffers for the limit samples (position & tangents)
delete g_Q;
g_Q = Osd::CpuGLVertexBuffer::Create(6, g_nparticles);
memset( g_Q->BindCpuBuffer(), 0, g_nparticles*6*sizeof(float));
if (g_drawMode==kRANDOM) {
createRandomColors(g_nparticles, 6, g_Q->BindCpuBuffer()+3);
}
delete g_dQs;
g_dQs = Osd::CpuGLVertexBuffer::Create(3,g_nparticles);
memset( g_dQs->BindCpuBuffer(), 0, g_nparticles*3*sizeof(float));
delete g_dQt;
g_dQt = Osd::CpuGLVertexBuffer::Create(3,g_nparticles);
memset( g_dQt->BindCpuBuffer(), 0, g_nparticles*3*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(2.0f);
glDrawArrays(GL_POINTS, 0, g_nparticles);
glPointSize(1.0f);
glBindVertexArray(0);
glUseProgram(0);
}
//------------------------------------------------------------------------------
static void
display() {
g_hud.GetFrameBuffer()->Bind();
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);
glEnable(GL_DEPTH_TEST);
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();
g_hud.GetFrameBuffer()->ApplyImageShader();
if (g_hud.IsVisible()) {
g_fpsTimer.Stop();
double fps = 1.0/g_fpsTimer.GetElapsed();
g_fpsTimer.Start();
g_hud.DrawString(10, -150, "Particle Speed ([) (]): %.1f", g_particles->GetSpeed());
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 * 1000.f);
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) {
static char msg[] = "Face-varying interpolation not implemented yet";
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
motion(GLFWwindow *, double dx, double dy) {
int x=(int)dx, y=(int)dy;
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
mouse(GLFWwindow *, int button, int state, int /* mods */) {
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
setSamples(bool add) {
g_nsamples += add ? 50 : -50;
g_nsamples = std::max(0, g_nsamples);
createOsdMesh(g_defaultShapes[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 '=': setSamples(true); break;
case '-': setSamples(false); break;
case '[': if (g_particles) {
g_particles->SetSpeed(g_particles->GetSpeed()-0.1f);
} break;
case ']': if (g_particles) {
g_particles->SetSpeed(g_particles->GetSpeed()+0.1f);
} break;
case GLFW_KEY_ESCAPE: g_hud.SetVisible(!g_hud.IsVisible()); break;
}
}
//------------------------------------------------------------------------------
static void
callbackError(OpenSubdiv::Far::ErrorType err, const char *message) {
printf("Error: %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[g_currentShape], g_level);
}
//------------------------------------------------------------------------------
static void
callbackLevel(int l) {
g_level = l;
createOsdMesh(g_defaultShapes[g_currentShape], g_level);
}
//------------------------------------------------------------------------------
static void
callbackAnimate(bool checked, int /* m */) {
g_moveScale = checked * 3.0f;
}
//------------------------------------------------------------------------------
static void
callbackFreeze(bool checked, int /* f */) {
g_freeze = checked;
}
//------------------------------------------------------------------------------
static void
callbackCentered(bool checked, int /* f */) {
g_randomStart = !checked;
createOsdMesh(g_defaultShapes[g_currentShape], g_level);
}
//------------------------------------------------------------------------------
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], g_level);
}
//------------------------------------------------------------------------------
static void
initHUD() {
int windowWidth = g_width, windowHeight = g_height,
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.SetFrameBuffer(new GLFrameBuffer);
g_hud.AddCheckBox("Cage Edges (H)", true, 10, 10, callbackDisplayCageEdges, 0, 'h');
g_hud.AddCheckBox("Cage Verts (J)", true, 10, 30, callbackDisplayCageVertices, 0, 'j');
g_hud.AddCheckBox("Animate vertices (M)", g_moveScale != 0, 10, 50, callbackAnimate, 0, 'm');
g_hud.AddCheckBox("Freeze (spc)", false, 10, 70, callbackFreeze, 0, ' ');
g_hud.AddCheckBox("Random Start", false, 10, 120, callbackCentered, 0);
int shading_pulldown = g_hud.AddPullDown("Shading (W)", 250, 10, 250, callbackDisplayVaryingColors, 'w');
g_hud.AddPullDownButton(shading_pulldown, "Random", kRANDOM, g_drawMode==kRANDOM);
g_hud.AddPullDownButton(shading_pulldown, "(u,v)", kUV, g_drawMode==kUV);
g_hud.AddPullDownButton(shading_pulldown, "Varying", kVARYING, g_drawMode==kVARYING);
g_hud.AddPullDownButton(shading_pulldown, "FaceVarying", kFACEVARYING, g_drawMode==kFACEVARYING);
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));
}
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);
}
g_hud.Rebuild(windowWidth, windowHeight, frameBufferWidth, frameBufferHeight);
}
//------------------------------------------------------------------------------
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);
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
callbackErrorGLFW(int error, const char* description) {
fprintf(stderr, "GLFW Error (%d) : %s\n", error, description);
}
//------------------------------------------------------------------------------
static void
setGLCoreProfile() {
#define glfwOpenWindowHint glfwWindowHint
#define GLFW_OPENGL_VERSION_MAJOR GLFW_CONTEXT_VERSION_MAJOR
#define GLFW_OPENGL_VERSION_MINOR GLFW_CONTEXT_VERSION_MINOR
glfwOpenWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
#if not defined(__APPLE__)
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MAJOR, 4);
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MINOR, 2);
#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) {
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(ShapeDesc(argv[1], str.c_str(), kCatmark));
}
}
}
Far::SetErrorCallback(callbackError);
initShapes();
glfwSetErrorCallback(callbackErrorGLFW);
if (not glfwInit()) {
printf("Failed to initialize GLFW\n");
return 1;
}
static const char windowTitle[] = "OpenSubdiv glEvalLimit " OPENSUBDIV_VERSION_STRING;
#define CORE_PROFILE
#ifdef CORE_PROFILE
setGLCoreProfile();
#endif
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);
// accommodate 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);
#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();
glfwPollEvents();
glfwSwapBuffers(g_window);
glFinish();
}
uninitGL();
glfwTerminate();
}
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