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OpenSubdiv/examples/glViewer/viewer.cpp
David G Yu a07ad19559 Fixed examples to run correctly on high DPI displays with GLFW 3 
The example code now uses the new glfw*FramebufferSize methods
to determine the size of the windows's framebuffer for rendering
and glfw*WindowSize method for user interaction

Fixes #263
2014-02-21 19:25:00 -08:00

1949 lines
65 KiB
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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
#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/error.h>
#include <osd/vertex.h>
#include <osd/glDrawContext.h>
#include <osd/glDrawRegistry.h>
#include <osd/cpuGLVertexBuffer.h>
#include <osd/cpuComputeContext.h>
#include <osd/cpuComputeController.h>
OpenSubdiv::OsdCpuComputeController *g_cpuComputeController = NULL;
#ifdef OPENSUBDIV_HAS_OPENMP
#include <osd/ompComputeController.h>
OpenSubdiv::OsdOmpComputeController *g_ompComputeController = NULL;
#endif
#ifdef OPENSUBDIV_HAS_TBB
#include <osd/tbbComputeController.h>
OpenSubdiv::OsdTbbComputeController *g_tbbComputeController = NULL;
#endif
#ifdef OPENSUBDIV_HAS_GCD
#include <osd/gcdComputeController.h>
OpenSubdiv::OsdGcdComputeController *g_gcdComputeController = NULL;
#endif
#ifdef OPENSUBDIV_HAS_OPENCL
#include <osd/clGLVertexBuffer.h>
#include <osd/clComputeContext.h>
#include <osd/clComputeController.h>
#include "../common/clInit.h"
cl_context g_clContext;
cl_command_queue g_clQueue;
OpenSubdiv::OsdCLComputeController *g_clComputeController = NULL;
#endif
#ifdef OPENSUBDIV_HAS_CUDA
#include <osd/cudaGLVertexBuffer.h>
#include <osd/cudaComputeContext.h>
#include <osd/cudaComputeController.h>
#include <cuda_runtime_api.h>
#include <cuda_gl_interop.h>
#include "../common/cudaInit.h"
bool g_cudaInitialized = false;
OpenSubdiv::OsdCudaComputeController *g_cudaComputeController = NULL;
#endif
#ifdef OPENSUBDIV_HAS_GLSL_TRANSFORM_FEEDBACK
#include <osd/glslTransformFeedbackComputeContext.h>
#include <osd/glslTransformFeedbackComputeController.h>
#include <osd/glVertexBuffer.h>
OpenSubdiv::OsdGLSLTransformFeedbackComputeController *g_glslTransformFeedbackComputeController = NULL;
#endif
#ifdef OPENSUBDIV_HAS_GLSL_COMPUTE
#include <osd/glslComputeContext.h>
#include <osd/glslComputeController.h>
#include <osd/glVertexBuffer.h>
OpenSubdiv::OsdGLSLComputeController *g_glslComputeController = NULL;
#endif
#include <osd/glMesh.h>
OpenSubdiv::OsdGLMeshInterface *g_mesh;
#include <common/shape_utils.h>
#include "../common/stopwatch.h"
#include "../common/simple_math.h"
#include "../common/gl_hud.h"
#include "../common/patchColors.h"
static const char *shaderSource =
#if defined(GL_ARB_tessellation_shader) || defined(GL_VERSION_4_0)
#include "shader.gen.h"
#else
#include "shader_gl3.gen.h"
#endif
;
#include <cfloat>
#include <vector>
#include <fstream>
#include <sstream>
typedef OpenSubdiv::HbrMesh<OpenSubdiv::OsdVertex> OsdHbrMesh;
typedef OpenSubdiv::HbrVertex<OpenSubdiv::OsdVertex> OsdHbrVertex;
typedef OpenSubdiv::HbrFace<OpenSubdiv::OsdVertex> OsdHbrFace;
typedef OpenSubdiv::HbrHalfedge<OpenSubdiv::OsdVertex> OsdHbrHalfedge;
enum KernelType { kCPU = 0,
kOPENMP = 1,
kTBB = 2,
kGCD = 3,
kCUDA = 4,
kCL = 5,
kGLSL = 6,
kGLSLCompute = 7 };
enum DisplayStyle { kWire = 0,
kShaded,
kWireShaded,
kVaryingColor,
kFaceVaryingColor };
enum HudCheckBox { kHUD_CB_DISPLAY_CAGE_EDGES,
kHUD_CB_DISPLAY_CAGE_VERTS,
kHUD_CB_ANIMATE_VERTICES,
kHUD_CB_DISPLAY_PATCH_COLOR,
kHUD_CB_VIEW_LOD,
kHUD_CB_FRACTIONAL_SPACING,
kHUD_CB_PATCH_CULL,
kHUD_CB_FREEZE };
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;
int g_currentShape = 0;
int g_frame = 0,
g_repeatCount = 0;
// GUI variables
int g_fullscreen = 0,
g_freeze = 0,
g_displayStyle = kWireShaded,
g_adaptive = 0,
g_drawCageEdges = 1,
g_drawCageVertices = 0,
g_mbutton[3] = {0, 0, 0},
g_running = 1;
int g_displayPatchColor = 1,
g_screenSpaceTess = 0,
g_fractionalSpacing = 0,
g_patchCull = 0;
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;
// performance
float g_cpuTime = 0;
float g_gpuTime = 0;
Stopwatch g_fpsTimer;
// geometry
std::vector<float> g_orgPositions,
g_positions;
Scheme g_scheme;
int g_level = 2;
int g_tessLevel = 1;
int g_tessLevelMin = 1;
int g_kernel = kCPU;
float g_moveScale = 0.0f;
GLuint g_transformUB = 0,
g_transformBinding = 0,
g_tessellationUB = 0,
g_tessellationBinding = 0,
g_lightingUB = 0,
g_lightingBinding = 0;
struct Transform {
float ModelViewMatrix[16];
float ProjectionMatrix[16];
float ModelViewProjectionMatrix[16];
} g_transformData;
GLuint g_primQuery = 0;
GLuint g_vao = 0;
GLuint g_cageEdgeVAO = 0,
g_cageEdgeVBO = 0,
g_cageVertexVAO = 0,
g_cageVertexVBO = 0;
std::vector<int> g_coarseEdges;
std::vector<float> g_coarseEdgeSharpness;
std::vector<float> g_coarseVertexSharpness;
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);
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 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_chaikin0.h>
g_defaultShapes.push_back(SimpleShape(catmark_chaikin0, "catmark_chaikin0", kCatmark));
#include <shapes/catmark_chaikin1.h>
g_defaultShapes.push_back(SimpleShape(catmark_chaikin1, "catmark_chaikin1", kCatmark));
#include <shapes/catmark_fan.h>
g_defaultShapes.push_back(SimpleShape(catmark_fan, "catmark_fan", 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));
#include <shapes/catmark_bishop.h>
g_defaultShapes.push_back(SimpleShape(catmark_bishop, "catmark_bishop", kCatmark));
#include <shapes/catmark_car.h>
g_defaultShapes.push_back(SimpleShape(catmark_car, "catmark_car", kCatmark));
#include <shapes/catmark_helmet.h>
g_defaultShapes.push_back(SimpleShape(catmark_helmet, "catmark_helmet", kCatmark));
#include <shapes/catmark_pawn.h>
g_defaultShapes.push_back(SimpleShape(catmark_pawn, "catmark_pawn", kCatmark));
#include <shapes/catmark_rook.h>
g_defaultShapes.push_back(SimpleShape(catmark_rook, "catmark_rook", kCatmark));
#include <shapes/bilinear_cube.h>
g_defaultShapes.push_back(SimpleShape(bilinear_cube, "bilinear_cube", kBilinear));
#include <shapes/loop_cube_creases0.h>
g_defaultShapes.push_back(SimpleShape(loop_cube_creases0, "loop_cube_creases0", kLoop));
#include <shapes/loop_cube_creases1.h>
g_defaultShapes.push_back(SimpleShape(loop_cube_creases1, "loop_cube_creases1", kLoop));
#include <shapes/loop_cube.h>
g_defaultShapes.push_back(SimpleShape(loop_cube, "loop_cube", kLoop));
#include <shapes/loop_icosahedron.h>
g_defaultShapes.push_back(SimpleShape(loop_icosahedron, "loop_icosahedron", kLoop));
#include <shapes/loop_saddle_edgecorner.h>
g_defaultShapes.push_back(SimpleShape(loop_saddle_edgecorner, "loop_saddle_edgecorner", kLoop));
#include <shapes/loop_saddle_edgeonly.h>
g_defaultShapes.push_back(SimpleShape(loop_saddle_edgeonly, "loop_saddle_edgeonly", kLoop));
#include <shapes/loop_triangle_edgecorner.h>
g_defaultShapes.push_back(SimpleShape(loop_triangle_edgecorner, "loop_triangle_edgecorner", kLoop));
#include <shapes/loop_triangle_edgeonly.h>
g_defaultShapes.push_back(SimpleShape(loop_triangle_edgeonly, "loop_triangle_edgeonly", kLoop));
#include <shapes/loop_chaikin0.h>
g_defaultShapes.push_back(SimpleShape(loop_chaikin0, "loop_chaikin0", kLoop));
#include <shapes/loop_chaikin1.h>
g_defaultShapes.push_back(SimpleShape(loop_chaikin1, "loop_chaikin1", kLoop));
}
//------------------------------------------------------------------------------
#ifdef calcNormals
static void
calcNormals(OsdHbrMesh * mesh, std::vector<float> const & pos, std::vector<float> & result ) {
// calc normal vectors
int nverts = (int)pos.size()/3;
int nfaces = mesh->GetNumCoarseFaces();
for (int i = 0; i < nfaces; ++i) {
OsdHbrFace * f = mesh->GetFace(i);
float const * p0 = &pos[f->GetVertex(0)->GetID()*3],
* p1 = &pos[f->GetVertex(1)->GetID()*3],
* p2 = &pos[f->GetVertex(2)->GetID()*3];
float n[3];
cross( n, p0, p1, p2 );
for (int j = 0; j < f->GetNumVertices(); j++) {
int idx = f->GetVertex(j)->GetID() * 3;
result[idx ] += n[0];
result[idx+1] += n[1];
result[idx+2] += n[2];
}
}
for (int i = 0; i < nverts; ++i)
normalize( &result[i*3] );
}
#endif
//------------------------------------------------------------------------------
static void
updateGeom() {
int nverts = (int)g_orgPositions.size() / 3;
std::vector<float> vertex, varying;
vertex.reserve(nverts*3);
if (g_displayStyle == kVaryingColor)
varying.reserve(nverts*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;
}
p = &g_orgPositions[0];
const float *pp = &g_positions[0];
for (int i = 0; i < nverts; ++i) {
vertex.push_back(pp[0]);
vertex.push_back(pp[1]);
vertex.push_back(pp[2]);
if (g_displayStyle == kVaryingColor) {
varying.push_back(p[2]);
varying.push_back(p[1]);
varying.push_back(p[0]);
p += 3;
}
pp += 3;
}
g_mesh->UpdateVertexBuffer(&vertex[0], 0, nverts);
if (g_displayStyle == kVaryingColor)
g_mesh->UpdateVaryingBuffer(&varying[0], 0, nverts);
Stopwatch s;
s.Start();
g_mesh->Refine();
s.Stop();
g_cpuTime = float(s.GetElapsed() * 1000.0f);
s.Start();
g_mesh->Synchronize();
s.Stop();
g_gpuTime = float(s.GetElapsed() * 1000.0f);
}
//------------------------------------------------------------------------------
static const char *
getKernelName(int kernel) {
if (kernel == kCPU)
return "CPU";
else if (kernel == kOPENMP)
return "OpenMP";
else if (kernel == kTBB)
return "TBB";
else if (kernel == kGCD)
return "GCD";
else if (kernel == kCUDA)
return "Cuda";
else if (kernel == kGLSL)
return "GLSL TransformFeedback";
else if (kernel == kGLSLCompute)
return "GLSL Compute";
else if (kernel == kCL)
return "OpenCL";
return "Unknown";
}
//------------------------------------------------------------------------------
static void
createOsdMesh( const std::string &shape, int level, int kernel, Scheme scheme=kCatmark ) {
checkGLErrors("create osd enter");
// generate Hbr representation from "obj" description
OsdHbrMesh * hmesh = simpleHbr<OpenSubdiv::OsdVertex>(shape.c_str(), scheme, g_orgPositions,
g_displayStyle == kFaceVaryingColor);
g_positions.resize(g_orgPositions.size(),0.0f);
// save coarse topology (used for coarse mesh drawing)
g_coarseEdges.clear();
g_coarseEdgeSharpness.clear();
g_coarseVertexSharpness.clear();
int nf = hmesh->GetNumFaces();
for(int i=0; i<nf; ++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());
}
delete g_mesh;
g_mesh = NULL;
g_scheme = scheme;
// Adaptive refinement currently supported only for catmull-clark scheme
bool doAdaptive = (g_adaptive!=0 and g_scheme==kCatmark);
OpenSubdiv::OsdMeshBitset bits;
bits.set(OpenSubdiv::MeshAdaptive, doAdaptive);
bits.set(OpenSubdiv::MeshFVarData, 1);
int numVertexElements = 3;
int numVaryingElements = (g_displayStyle == kVaryingColor) ? 3 : 0;
if (kernel == kCPU) {
if (not g_cpuComputeController) {
g_cpuComputeController = new OpenSubdiv::OsdCpuComputeController();
}
g_mesh = new OpenSubdiv::OsdMesh<OpenSubdiv::OsdCpuGLVertexBuffer,
OpenSubdiv::OsdCpuComputeController,
OpenSubdiv::OsdGLDrawContext>(
g_cpuComputeController,
hmesh,
numVertexElements,
numVaryingElements,
level, bits);
#ifdef OPENSUBDIV_HAS_OPENMP
} else if (kernel == kOPENMP) {
if (not g_ompComputeController) {
g_ompComputeController = new OpenSubdiv::OsdOmpComputeController();
}
g_mesh = new OpenSubdiv::OsdMesh<OpenSubdiv::OsdCpuGLVertexBuffer,
OpenSubdiv::OsdOmpComputeController,
OpenSubdiv::OsdGLDrawContext>(
g_ompComputeController,
hmesh,
numVertexElements,
numVaryingElements,
level, bits);
#endif
#ifdef OPENSUBDIV_HAS_TBB
} else if (kernel == kTBB) {
if (not g_tbbComputeController) {
g_tbbComputeController = new OpenSubdiv::OsdTbbComputeController();
}
g_mesh = new OpenSubdiv::OsdMesh<OpenSubdiv::OsdCpuGLVertexBuffer,
OpenSubdiv::OsdTbbComputeController,
OpenSubdiv::OsdGLDrawContext>(
g_tbbComputeController,
hmesh,
numVertexElements,
numVaryingElements,
level, bits);
#endif
#ifdef OPENSUBDIV_HAS_GCD
} else if (kernel == kGCD) {
if (not g_gcdComputeController) {
g_gcdComputeController = new OpenSubdiv::OsdGcdComputeController();
}
g_mesh = new OpenSubdiv::OsdMesh<OpenSubdiv::OsdCpuGLVertexBuffer,
OpenSubdiv::OsdGcdComputeController,
OpenSubdiv::OsdGLDrawContext>(
g_gcdComputeController,
hmesh,
numVertexElements,
numVaryingElements,
level, bits);
#endif
#ifdef OPENSUBDIV_HAS_OPENCL
} else if(kernel == kCL) {
if (not g_clComputeController) {
g_clComputeController = new OpenSubdiv::OsdCLComputeController(g_clContext, g_clQueue);
}
g_mesh = new OpenSubdiv::OsdMesh<OpenSubdiv::OsdCLGLVertexBuffer,
OpenSubdiv::OsdCLComputeController,
OpenSubdiv::OsdGLDrawContext>(
g_clComputeController,
hmesh,
numVertexElements,
numVaryingElements,
level, bits, g_clContext, g_clQueue);
#endif
#ifdef OPENSUBDIV_HAS_CUDA
} else if(kernel == kCUDA) {
if (not g_cudaComputeController) {
g_cudaComputeController = new OpenSubdiv::OsdCudaComputeController();
}
g_mesh = new OpenSubdiv::OsdMesh<OpenSubdiv::OsdCudaGLVertexBuffer,
OpenSubdiv::OsdCudaComputeController,
OpenSubdiv::OsdGLDrawContext>(
g_cudaComputeController,
hmesh,
numVertexElements,
numVaryingElements,
level, bits);
#endif
#ifdef OPENSUBDIV_HAS_GLSL_TRANSFORM_FEEDBACK
} else if(kernel == kGLSL) {
if (not g_glslTransformFeedbackComputeController) {
g_glslTransformFeedbackComputeController = new OpenSubdiv::OsdGLSLTransformFeedbackComputeController();
}
g_mesh = new OpenSubdiv::OsdMesh<OpenSubdiv::OsdGLVertexBuffer,
OpenSubdiv::OsdGLSLTransformFeedbackComputeController,
OpenSubdiv::OsdGLDrawContext>(
g_glslTransformFeedbackComputeController,
hmesh,
numVertexElements,
numVaryingElements,
level, bits);
#endif
#ifdef OPENSUBDIV_HAS_GLSL_COMPUTE
} else if(kernel == kGLSLCompute) {
if (not g_glslComputeController) {
g_glslComputeController = new OpenSubdiv::OsdGLSLComputeController();
}
g_mesh = new OpenSubdiv::OsdMesh<OpenSubdiv::OsdGLVertexBuffer,
OpenSubdiv::OsdGLSLComputeController,
OpenSubdiv::OsdGLDrawContext>(
g_glslComputeController,
hmesh,
numVertexElements,
numVaryingElements,
level, bits);
#endif
} else {
printf("Unsupported kernel %s\n", getKernelName(kernel));
}
// Hbr mesh can be deleted
delete hmesh;
// compute model bounding
float min[3] = { FLT_MAX, FLT_MAX, FLT_MAX};
float max[3] = {-FLT_MAX, -FLT_MAX, -FLT_MAX};
for (size_t i=0; i <g_orgPositions.size()/3; ++i) {
for(int j=0; j<3; ++j) {
float v = g_orgPositions[i*3+j];
min[j] = std::min(min[j], v);
max[j] = std::max(max[j], v);
}
}
for (int j=0; j<3; ++j) {
g_center[j] = (min[j] + max[j]) * 0.5f;
g_size += (max[j]-min[j])*(max[j]-min[j]);
}
g_size = sqrtf(g_size);
g_tessLevelMin = 1;
g_tessLevel = std::max(g_tessLevel,g_tessLevelMin);
updateGeom();
// -------- VAO
glBindVertexArray(g_vao);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_mesh->GetDrawContext()->GetPatchIndexBuffer());
glBindBuffer(GL_ARRAY_BUFFER, g_mesh->BindVertexBuffer());
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof (GLfloat) * 3, 0);
if (g_displayStyle == kVaryingColor) {
glBindBuffer(GL_ARRAY_BUFFER, g_mesh->BindVaryingBuffer());
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, sizeof (GLfloat) * 3, 0);
} else {
glDisableVertexAttribArray(1);
}
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindVertexArray(0);
}
//------------------------------------------------------------------------------
static void
fitFrame() {
g_pan[0] = g_pan[1] = 0;
g_dolly = g_size;
}
//------------------------------------------------------------------------------
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) {
setSharpnessColor(g_coarseVertexSharpness[i], &r, &g, &b);
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);
}
//------------------------------------------------------------------------------
union Effect {
Effect(int displayStyle_, int screenSpaceTess_, int fractionalSpacing_, int patchCull_) : value(0) {
displayStyle = displayStyle_;
screenSpaceTess = screenSpaceTess_;
fractionalSpacing = fractionalSpacing_;
patchCull = patchCull_;
}
struct {
unsigned int displayStyle:3;
unsigned int screenSpaceTess:1;
unsigned int fractionalSpacing:1;
unsigned int patchCull:1;
};
int value;
bool operator < (const Effect &e) const {
return value < e.value;
}
};
typedef std::pair<OpenSubdiv::OsdDrawContext::PatchDescriptor, Effect> EffectDesc;
class EffectDrawRegistry : public OpenSubdiv::OsdGLDrawRegistry<EffectDesc> {
protected:
virtual ConfigType *
_CreateDrawConfig(DescType const & desc, SourceConfigType const * sconfig);
virtual SourceConfigType *
_CreateDrawSourceConfig(DescType const & desc);
};
EffectDrawRegistry::SourceConfigType *
EffectDrawRegistry::_CreateDrawSourceConfig(DescType const & desc)
{
Effect effect = desc.second;
SourceConfigType * sconfig =
BaseRegistry::_CreateDrawSourceConfig(desc.first);
assert(sconfig);
#if defined(GL_ARB_tessellation_shader) || defined(GL_VERSION_4_0)
const char *glslVersion = "#version 400\n";
#else
const char *glslVersion = "#version 330\n";
#endif
if (desc.first.GetType() == OpenSubdiv::FarPatchTables::QUADS or
desc.first.GetType() == OpenSubdiv::FarPatchTables::TRIANGLES) {
sconfig->vertexShader.source = shaderSource;
sconfig->vertexShader.version = glslVersion;
sconfig->vertexShader.AddDefine("VERTEX_SHADER");
} else {
sconfig->geometryShader.AddDefine("SMOOTH_NORMALS");
}
sconfig->geometryShader.source = shaderSource;
sconfig->geometryShader.version = glslVersion;
sconfig->geometryShader.AddDefine("GEOMETRY_SHADER");
sconfig->fragmentShader.source = shaderSource;
sconfig->fragmentShader.version = glslVersion;
sconfig->fragmentShader.AddDefine("FRAGMENT_SHADER");
if (desc.first.GetType() == OpenSubdiv::FarPatchTables::QUADS) {
// uniform catmark, bilinear
sconfig->geometryShader.AddDefine("PRIM_QUAD");
sconfig->fragmentShader.AddDefine("PRIM_QUAD");
sconfig->commonShader.AddDefine("UNIFORM_SUBDIVISION");
} else if (desc.first.GetType() == OpenSubdiv::FarPatchTables::TRIANGLES) {
// uniform loop
sconfig->geometryShader.AddDefine("PRIM_TRI");
sconfig->fragmentShader.AddDefine("PRIM_TRI");
sconfig->commonShader.AddDefine("LOOP");
sconfig->commonShader.AddDefine("UNIFORM_SUBDIVISION");
} else {
// adaptive
sconfig->vertexShader.source = shaderSource + sconfig->vertexShader.source;
sconfig->tessControlShader.source = shaderSource + sconfig->tessControlShader.source;
sconfig->tessEvalShader.source = shaderSource + sconfig->tessEvalShader.source;
sconfig->geometryShader.AddDefine("PRIM_TRI");
sconfig->fragmentShader.AddDefine("PRIM_TRI");
}
if (effect.screenSpaceTess) {
sconfig->commonShader.AddDefine("OSD_ENABLE_SCREENSPACE_TESSELLATION");
}
if (effect.fractionalSpacing) {
sconfig->commonShader.AddDefine("OSD_FRACTIONAL_ODD_SPACING");
}
if (effect.patchCull) {
sconfig->commonShader.AddDefine("OSD_ENABLE_PATCH_CULL");
}
switch (effect.displayStyle) {
case kWire:
sconfig->commonShader.AddDefine("GEOMETRY_OUT_WIRE");
break;
case kWireShaded:
sconfig->commonShader.AddDefine("GEOMETRY_OUT_LINE");
break;
case kShaded:
sconfig->commonShader.AddDefine("GEOMETRY_OUT_FILL");
break;
case kVaryingColor:
sconfig->commonShader.AddDefine("VARYING_COLOR");
sconfig->commonShader.AddDefine("GEOMETRY_OUT_FILL");
break;
case kFaceVaryingColor:
sconfig->commonShader.AddDefine("OSD_FVAR_WIDTH", "2");
sconfig->commonShader.AddDefine("FACEVARYING_COLOR");
sconfig->commonShader.AddDefine("GEOMETRY_OUT_FILL");
break;
}
return sconfig;
}
EffectDrawRegistry::ConfigType *
EffectDrawRegistry::_CreateDrawConfig(
DescType const & desc,
SourceConfigType const * sconfig)
{
ConfigType * config = BaseRegistry::_CreateDrawConfig(desc.first, sconfig);
assert(config);
GLuint uboIndex;
// XXXdyu can use layout(binding=) with GLSL 4.20 and beyond
g_transformBinding = 0;
uboIndex = glGetUniformBlockIndex(config->program, "Transform");
if (uboIndex != GL_INVALID_INDEX)
glUniformBlockBinding(config->program, uboIndex, g_transformBinding);
g_tessellationBinding = 1;
uboIndex = glGetUniformBlockIndex(config->program, "Tessellation");
if (uboIndex != GL_INVALID_INDEX)
glUniformBlockBinding(config->program, uboIndex, g_tessellationBinding);
g_lightingBinding = 2;
uboIndex = glGetUniformBlockIndex(config->program, "Lighting");
if (uboIndex != GL_INVALID_INDEX)
glUniformBlockBinding(config->program, uboIndex, g_lightingBinding);
GLint loc;
#if not defined(GL_ARB_separate_shader_objects) || defined(GL_VERSION_4_1)
glUseProgram(config->program);
if ((loc = glGetUniformLocation(config->program, "OsdVertexBuffer")) != -1) {
glUniform1i(loc, 0); // GL_TEXTURE0
}
if ((loc = glGetUniformLocation(config->program, "OsdValenceBuffer")) != -1) {
glUniform1i(loc, 1); // GL_TEXTURE1
}
if ((loc = glGetUniformLocation(config->program, "OsdQuadOffsetBuffer")) != -1) {
glUniform1i(loc, 2); // GL_TEXTURE2
}
if ((loc = glGetUniformLocation(config->program, "OsdPatchParamBuffer")) != -1) {
glUniform1i(loc, 3); // GL_TEXTURE3
}
if ((loc = glGetUniformLocation(config->program, "OsdFVarDataBuffer")) != -1) {
glUniform1i(loc, 4); // GL_TEXTURE4
}
#else
if ((loc = glGetUniformLocation(config->program, "OsdVertexBuffer")) != -1) {
glProgramUniform1i(config->program, loc, 0); // GL_TEXTURE0
}
if ((loc = glGetUniformLocation(config->program, "OsdValenceBuffer")) != -1) {
glProgramUniform1i(config->program, loc, 1); // GL_TEXTURE1
}
if ((loc = glGetUniformLocation(config->program, "OsdQuadOffsetBuffer")) != -1) {
glProgramUniform1i(config->program, loc, 2); // GL_TEXTURE2
}
if ((loc = glGetUniformLocation(config->program, "OsdPatchParamBuffer")) != -1) {
glProgramUniform1i(config->program, loc, 3); // GL_TEXTURE3
}
if ((loc = glGetUniformLocation(config->program, "OsdFVarDataBuffer")) != -1) {
glProgramUniform1i(config->program, loc, 4); // GL_TEXTURE4
}
#endif
return config;
}
EffectDrawRegistry effectRegistry;
static Effect
GetEffect()
{
return Effect(g_displayStyle, g_screenSpaceTess, g_fractionalSpacing, g_patchCull);
}
//------------------------------------------------------------------------------
static GLuint
bindProgram(Effect effect, OpenSubdiv::OsdDrawContext::PatchArray const & patch)
{
EffectDesc effectDesc(patch.GetDescriptor(), effect);
EffectDrawRegistry::ConfigType *
config = effectRegistry.GetDrawConfig(effectDesc);
GLuint program = config->program;
glUseProgram(program);
if (! g_transformUB) {
glGenBuffers(1, &g_transformUB);
glBindBuffer(GL_UNIFORM_BUFFER, g_transformUB);
glBufferData(GL_UNIFORM_BUFFER,
sizeof(g_transformData), NULL, GL_STATIC_DRAW);
};
glBindBuffer(GL_UNIFORM_BUFFER, g_transformUB);
glBufferSubData(GL_UNIFORM_BUFFER,
0, sizeof(g_transformData), &g_transformData);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
glBindBufferBase(GL_UNIFORM_BUFFER, g_transformBinding, g_transformUB);
// Update and bind tessellation state
struct Tessellation {
float TessLevel;
} tessellationData;
tessellationData.TessLevel = static_cast<float>(1 << g_tessLevel);
if (! g_tessellationUB) {
glGenBuffers(1, &g_tessellationUB);
glBindBuffer(GL_UNIFORM_BUFFER, g_tessellationUB);
glBufferData(GL_UNIFORM_BUFFER,
sizeof(tessellationData), NULL, GL_STATIC_DRAW);
};
glBindBuffer(GL_UNIFORM_BUFFER, g_tessellationUB);
glBufferSubData(GL_UNIFORM_BUFFER,
0, sizeof(tessellationData), &tessellationData);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
glBindBufferBase(GL_UNIFORM_BUFFER, g_tessellationBinding, g_tessellationUB);
// Update and bind lighting state
struct Lighting {
struct Light {
float position[4];
float ambient[4];
float diffuse[4];
float specular[4];
} lightSource[2];
} lightingData = {
{{ { 0.5, 0.2f, 1.0f, 0.0f },
{ 0.1f, 0.1f, 0.1f, 1.0f },
{ 0.7f, 0.7f, 0.7f, 1.0f },
{ 0.8f, 0.8f, 0.8f, 1.0f } },
{ { -0.8f, 0.4f, -1.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 1.0f },
{ 0.5f, 0.5f, 0.5f, 1.0f },
{ 0.8f, 0.8f, 0.8f, 1.0f } }}
};
if (! g_lightingUB) {
glGenBuffers(1, &g_lightingUB);
glBindBuffer(GL_UNIFORM_BUFFER, g_lightingUB);
glBufferData(GL_UNIFORM_BUFFER,
sizeof(lightingData), NULL, GL_STATIC_DRAW);
};
glBindBuffer(GL_UNIFORM_BUFFER, g_lightingUB);
glBufferSubData(GL_UNIFORM_BUFFER,
0, sizeof(lightingData), &lightingData);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
glBindBufferBase(GL_UNIFORM_BUFFER, g_lightingBinding, g_lightingUB);
if (g_mesh->GetDrawContext()->GetVertexTextureBuffer()) {
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_BUFFER,
g_mesh->GetDrawContext()->GetVertexTextureBuffer());
}
if (g_mesh->GetDrawContext()->GetVertexValenceTextureBuffer()) {
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_BUFFER,
g_mesh->GetDrawContext()->GetVertexValenceTextureBuffer());
}
if (g_mesh->GetDrawContext()->GetQuadOffsetsTextureBuffer()) {
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_BUFFER,
g_mesh->GetDrawContext()->GetQuadOffsetsTextureBuffer());
}
if (g_mesh->GetDrawContext()->GetPatchParamTextureBuffer()) {
glActiveTexture(GL_TEXTURE3);
glBindTexture(GL_TEXTURE_BUFFER,
g_mesh->GetDrawContext()->GetPatchParamTextureBuffer());
}
if (g_mesh->GetDrawContext()->GetFvarDataTextureBuffer()) {
glActiveTexture(GL_TEXTURE4);
glBindTexture(GL_TEXTURE_BUFFER,
g_mesh->GetDrawContext()->GetFvarDataTextureBuffer());
}
glActiveTexture(GL_TEXTURE0);
return program;
}
//------------------------------------------------------------------------------
static void
display() {
Stopwatch s;
s.Start();
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glViewport(0, 0, g_width, g_height);
// prepare view matrix
double aspect = g_width/(double)g_height;
identity(g_transformData.ModelViewMatrix);
translate(g_transformData.ModelViewMatrix, -g_pan[0], -g_pan[1], -g_dolly);
rotate(g_transformData.ModelViewMatrix, g_rotate[1], 1, 0, 0);
rotate(g_transformData.ModelViewMatrix, g_rotate[0], 0, 1, 0);
rotate(g_transformData.ModelViewMatrix, -90, 1, 0, 0);
translate(g_transformData.ModelViewMatrix,
-g_center[0], -g_center[1], -g_center[2]);
perspective(g_transformData.ProjectionMatrix,
45.0f, (float)aspect, 0.01f, 500.0f);
multMatrix(g_transformData.ModelViewProjectionMatrix,
g_transformData.ModelViewMatrix,
g_transformData.ProjectionMatrix);
// make sure that the vertex buffer is interoped back as a GL resources.
g_mesh->BindVertexBuffer();
if (g_displayStyle == kVaryingColor)
g_mesh->BindVaryingBuffer();
glBindVertexArray(g_vao);
OpenSubdiv::OsdDrawContext::PatchArrayVector const & patches = g_mesh->GetDrawContext()->patchArrays;
// patch drawing
int patchCount[11][6][4]; // [Type][Pattern][Rotation] (see far/patchTables.h)
memset(patchCount, 0, sizeof(patchCount));
// primitive counting
glBeginQuery(GL_PRIMITIVES_GENERATED, g_primQuery);
for (int i=0; i<(int)patches.size(); ++i) {
OpenSubdiv::OsdDrawContext::PatchArray const & patch = patches[i];
OpenSubdiv::OsdDrawContext::PatchDescriptor desc = patch.GetDescriptor();
OpenSubdiv::FarPatchTables::Type patchType = desc.GetType();
int patchPattern = desc.GetPattern();
int patchRotation = desc.GetRotation();
int subPatch = desc.GetSubPatch();
if (subPatch == 0) {
patchCount[patchType][patchPattern][patchRotation] += patch.GetNumPatches();
}
GLenum primType;
switch(patchType) {
case OpenSubdiv::FarPatchTables::QUADS:
primType = GL_LINES_ADJACENCY;
break;
case OpenSubdiv::FarPatchTables::TRIANGLES:
primType = GL_TRIANGLES;
break;
default:
#if defined(GL_ARB_tessellation_shader) || defined(GL_VERSION_4_0)
primType = GL_PATCHES;
glPatchParameteri(GL_PATCH_VERTICES, desc.GetNumControlVertices());
#else
primType = GL_POINTS;
#endif
}
#if defined(GL_ARB_tessellation_shader) || defined(GL_VERSION_4_0)
GLuint program = bindProgram(GetEffect(), patch);
GLuint diffuseColor = glGetUniformLocation(program, "diffuseColor");
if (g_displayPatchColor and primType == GL_PATCHES) {
float const * color = getAdaptivePatchColor( desc );
glProgramUniform4f(program, diffuseColor, color[0], color[1], color[2], color[3]);
} else {
glProgramUniform4f(program, diffuseColor, 0.4f, 0.4f, 0.8f, 1);
}
GLuint uniformGregoryQuadOffsetBase =
glGetUniformLocation(program, "GregoryQuadOffsetBase");
GLuint uniformPrimitiveIdBase =
glGetUniformLocation(program, "PrimitiveIdBase");
glProgramUniform1i(program, uniformGregoryQuadOffsetBase,
patch.GetQuadOffsetIndex());
glProgramUniform1i(program, uniformPrimitiveIdBase,
patch.GetPatchIndex());
#else
GLuint program = bindProgram(GetEffect(), patch);
GLint uniformPrimitiveIdBase =
glGetUniformLocation(program, "PrimitiveIdBase");
if (uniformPrimitiveIdBase != -1)
glUniform1i(uniformPrimitiveIdBase, patch.GetPatchIndex());
#endif
if (g_displayStyle == kWire) {
glDisable(GL_CULL_FACE);
}
glDrawElements(primType, patch.GetNumIndices(), GL_UNSIGNED_INT,
(void *)(patch.GetVertIndex() * sizeof(unsigned int)));
if (g_displayStyle == kWire) {
glEnable(GL_CULL_FACE);
}
}
glEndQuery(GL_PRIMITIVES_GENERATED);
GLuint numPrimsGenerated = 0;
glGetQueryObjectuiv(g_primQuery, GL_QUERY_RESULT, &numPrimsGenerated);
glBindVertexArray(0);
glUseProgram(0);
if (g_drawCageEdges)
drawCageEdges();
if (g_drawCageVertices)
drawCageVertices();
s.Stop();
float drawCpuTime = float(s.GetElapsed() * 1000.0f);
s.Start();
glFinish();
s.Stop();
float drawGpuTime = float(s.GetElapsed() * 1000.0f);
if (g_hud.IsVisible()) {
g_fpsTimer.Stop();
double fps = 1.0/g_fpsTimer.GetElapsed();
g_fpsTimer.Start();
int x = -280;
g_hud.DrawString(x, -360, "NonPatch : %d",
patchCount[OpenSubdiv::FarPatchTables::QUADS][0][0]);
g_hud.DrawString(x, -340, "Regular : %d",
patchCount[OpenSubdiv::FarPatchTables::REGULAR][0][0]);
g_hud.DrawString(x, -320, "Boundary : %d",
patchCount[OpenSubdiv::FarPatchTables::BOUNDARY][0][0]);
g_hud.DrawString(x, -300, "Corner : %d",
patchCount[OpenSubdiv::FarPatchTables::CORNER][0][0]);
g_hud.DrawString(x, -280, "Gregory : %d",
patchCount[OpenSubdiv::FarPatchTables::GREGORY][0][0]);
g_hud.DrawString(x, -260, "Boundary Gregory : %d",
patchCount[OpenSubdiv::FarPatchTables::GREGORY_BOUNDARY][0][0]);
g_hud.DrawString(x, -240, "Trans. Regular : %d %d %d %d %d",
patchCount[OpenSubdiv::FarPatchTables::REGULAR][OpenSubdiv::FarPatchTables::PATTERN0][0],
patchCount[OpenSubdiv::FarPatchTables::REGULAR][OpenSubdiv::FarPatchTables::PATTERN1][0],
patchCount[OpenSubdiv::FarPatchTables::REGULAR][OpenSubdiv::FarPatchTables::PATTERN2][0],
patchCount[OpenSubdiv::FarPatchTables::REGULAR][OpenSubdiv::FarPatchTables::PATTERN3][0],
patchCount[OpenSubdiv::FarPatchTables::REGULAR][OpenSubdiv::FarPatchTables::PATTERN4][0]);
for (int i=0; i < 5; i++)
g_hud.DrawString(x, -220+i*20, "Trans. Boundary%d : %d %d %d %d", i,
patchCount[OpenSubdiv::FarPatchTables::BOUNDARY][i+1][0],
patchCount[OpenSubdiv::FarPatchTables::BOUNDARY][i+1][1],
patchCount[OpenSubdiv::FarPatchTables::BOUNDARY][i+1][2],
patchCount[OpenSubdiv::FarPatchTables::BOUNDARY][i+1][3]);
for (int i=0; i < 5; i++)
g_hud.DrawString(x, -100+i*20, "Trans. Corner%d : %d %d %d %d", i,
patchCount[OpenSubdiv::FarPatchTables::CORNER][i+1][0],
patchCount[OpenSubdiv::FarPatchTables::CORNER][i+1][1],
patchCount[OpenSubdiv::FarPatchTables::CORNER][i+1][2],
patchCount[OpenSubdiv::FarPatchTables::CORNER][i+1][3]);
g_hud.DrawString(10, -180, "Tess level : %d", g_tessLevel);
g_hud.DrawString(10, -160, "Primitives : %d", numPrimsGenerated);
g_hud.DrawString(10, -140, "Vertices : %d", g_mesh->GetNumVertices());
g_hud.DrawString(10, -120, "Scheme : %s", g_scheme==kBilinear ? "BILINEAR" : (g_scheme == kLoop ? "LOOP" : "CATMARK"));
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
#if GLFW_VERSION_MAJOR>=3
motion(GLFWwindow *, double dx, double dy) {
int x=(int)dx, y=(int)dy;
#else
motion(int x, int y) {
#endif
if (g_mbutton[0] && !g_mbutton[1] && !g_mbutton[2]) {
// orbit
g_rotate[0] += x - g_prev_x;
g_rotate[1] += y - g_prev_y;
} else if (!g_mbutton[0] && !g_mbutton[1] && g_mbutton[2]) {
// pan
g_pan[0] -= g_dolly*(x - g_prev_x)/g_width;
g_pan[1] += g_dolly*(y - g_prev_y)/g_height;
} else if ((g_mbutton[0] && !g_mbutton[1] && g_mbutton[2]) or
(!g_mbutton[0] && g_mbutton[1] && !g_mbutton[2])) {
// dolly
g_dolly -= g_dolly*0.01f*(x - g_prev_x);
if(g_dolly <= 0.01) g_dolly = 0.01f;
}
g_prev_x = x;
g_prev_y = y;
}
//------------------------------------------------------------------------------
static void
#if GLFW_VERSION_MAJOR>=3
mouse(GLFWwindow *, int button, int state, int mods) {
#else
mouse(int button, int state) {
#endif
if (button == 0 && state == GLFW_PRESS && g_hud.MouseClick(g_prev_x, g_prev_y))
return;
if (button < 3) {
g_mbutton[button] = (state == GLFW_PRESS);
}
}
//------------------------------------------------------------------------------
static void
uninitGL() {
glDeleteQueries(1, &g_primQuery);
glDeleteBuffers(1, &g_cageVertexVBO);
glDeleteBuffers(1, &g_cageEdgeVBO);
glDeleteVertexArrays(1, &g_vao);
glDeleteVertexArrays(1, &g_cageVertexVAO);
glDeleteVertexArrays(1, &g_cageEdgeVAO);
if (g_mesh)
delete g_mesh;
delete g_cpuComputeController;
#ifdef OPENSUBDIV_HAS_OPENMP
delete g_ompComputeController;
#endif
#ifdef OPENSUBDIV_HAS_TBB
delete g_tbbComputeController;
#endif
#ifdef OPENSUBDIV_HAS_GCD
delete g_gcdComputeController;
#endif
#ifdef OPENSUBDIV_HAS_OPENCL
delete g_clComputeController;
uninitCL(g_clContext, g_clQueue);
#endif
#ifdef OPENSUBDIV_HAS_CUDA
delete g_cudaComputeController;
cudaDeviceReset();
#endif
#ifdef OPENSUBDIV_HAS_GLSL_TRANSFORM_FEEDBACK
delete g_glslTransformFeedbackComputeController;
#endif
#ifdef OPENSUBDIV_HAS_GLSL_COMPUTE
delete g_glslComputeController;
#endif
}
//------------------------------------------------------------------------------
static void
#if GLFW_VERSION_MAJOR>=3
reshape(GLFWwindow *, int width, int height) {
#else
reshape(int width, int height) {
#endif
g_width = width;
g_height = height;
int windowWidth = g_width, windowHeight = g_height;
#if GLFW_VERSION_MAJOR>=3
// window size might not match framebuffer size on a high DPI display
glfwGetWindowSize(g_window, &windowWidth, &windowHeight);
#endif
g_hud.Rebuild(windowWidth, windowHeight);
}
//------------------------------------------------------------------------------
#if GLFW_VERSION_MAJOR>=3
void windowClose(GLFWwindow*) {
g_running = false;
}
#else
int windowClose() {
g_running = false;
return GL_TRUE;
}
#endif
//------------------------------------------------------------------------------
static void
toggleFullScreen() {
// XXXX manuelk : to re-implement from glut
}
//------------------------------------------------------------------------------
static void
#if GLFW_VERSION_MAJOR>=3
keyboard(GLFWwindow *, int key, int scancode, int event, int mods) {
#else
#define GLFW_KEY_ESCAPE GLFW_KEY_ESC
keyboard(int key, int event) {
#endif
if (event == GLFW_RELEASE) return;
if (g_hud.KeyDown(tolower(key))) return;
switch (key) {
case 'Q': g_running = 0; break;
case 'F': fitFrame(); break;
case GLFW_KEY_TAB: toggleFullScreen(); break;
case '+':
case '=': g_tessLevel++; break;
case '-': g_tessLevel = std::max(g_tessLevelMin, g_tessLevel-1); break;
case GLFW_KEY_ESCAPE: g_hud.SetVisible(!g_hud.IsVisible()); break;
}
}
//------------------------------------------------------------------------------
static void
rebuildOsdMesh()
{
createOsdMesh( g_defaultShapes[ g_currentShape ].data, g_level, g_kernel, g_defaultShapes[ g_currentShape ].scheme );
}
static void
callbackDisplayStyle(int b)
{
if (g_displayStyle == kVaryingColor or b == kVaryingColor or
g_displayStyle == kFaceVaryingColor or b == kFaceVaryingColor) {
// need to rebuild for varying reconstruct
g_displayStyle = b;
rebuildOsdMesh();
return;
}
g_displayStyle = b;
}
static void
callbackKernel(int k)
{
g_kernel = k;
#ifdef OPENSUBDIV_HAS_OPENCL
if (g_kernel == kCL and g_clContext == NULL) {
if (initCL(&g_clContext, &g_clQueue) == false) {
printf("Error in initializing OpenCL\n");
exit(1);
}
}
#endif
#ifdef OPENSUBDIV_HAS_CUDA
if (g_kernel == kCUDA and g_cudaInitialized == false) {
g_cudaInitialized = true;
cudaGLSetGLDevice( cutGetMaxGflopsDeviceId() );
}
#endif
rebuildOsdMesh();
}
static void
callbackLevel(int l)
{
g_level = l;
rebuildOsdMesh();
}
static void
callbackModel(int m)
{
if (m < 0)
m = 0;
if (m >= (int)g_defaultShapes.size())
m = (int)g_defaultShapes.size() - 1;
g_currentShape = m;
rebuildOsdMesh();
}
static void
callbackAdaptive(bool checked, int a)
{
if (OpenSubdiv::OsdGLDrawContext::SupportsAdaptiveTessellation()) {
g_adaptive = checked;
rebuildOsdMesh();
}
}
static void
callbackCheckBox(bool checked, int button)
{
switch (button) {
case kHUD_CB_DISPLAY_CAGE_EDGES:
g_drawCageEdges = checked;
break;
case kHUD_CB_DISPLAY_CAGE_VERTS:
g_drawCageVertices = checked;
break;
case kHUD_CB_ANIMATE_VERTICES:
g_moveScale = checked;
break;
case kHUD_CB_DISPLAY_PATCH_COLOR:
g_displayPatchColor = checked;
break;
case kHUD_CB_VIEW_LOD:
g_screenSpaceTess = checked;
break;
case kHUD_CB_FRACTIONAL_SPACING:
g_fractionalSpacing = checked;
break;
case kHUD_CB_PATCH_CULL:
g_patchCull = checked;
break;
case kHUD_CB_FREEZE:
g_freeze = checked;
break;
}
}
static void
initHUD()
{
int windowWidth = g_width, windowHeight = g_height;
#if GLFW_VERSION_MAJOR>=3
// window size might not match framebuffer size on a high DPI display
glfwGetWindowSize(g_window, &windowWidth, &windowHeight);
#endif
g_hud.Init(windowWidth, windowHeight);
g_hud.AddRadioButton(0, "CPU (K)", true, 10, 10, callbackKernel, kCPU, 'k');
#ifdef OPENSUBDIV_HAS_OPENMP
g_hud.AddRadioButton(0, "OPENMP", false, 10, 30, callbackKernel, kOPENMP, 'k');
#endif
#ifdef OPENSUBDIV_HAS_TBB
g_hud.AddRadioButton(0, "TBB", false, 10, 50, callbackKernel, kTBB, 'k');
#endif
#ifdef OPENSUBDIV_HAS_GCD
g_hud.AddRadioButton(0, "GCD", false, 10, 70, callbackKernel, kGCD, 'k');
#endif
#ifdef OPENSUBDIV_HAS_CUDA
g_hud.AddRadioButton(0, "CUDA", false, 10, 90, callbackKernel, kCUDA, 'k');
#endif
#ifdef OPENSUBDIV_HAS_OPENCL
g_hud.AddRadioButton(0, "OPENCL", false, 10, 110, callbackKernel, kCL, 'k');
#endif
#ifdef OPENSUBDIV_HAS_GLSL_TRANSFORM_FEEDBACK
g_hud.AddRadioButton(0, "GLSL TransformFeedback", false, 10, 130, callbackKernel, kGLSL, 'k');
#endif
#ifdef OPENSUBDIV_HAS_GLSL_COMPUTE
// Must also check at run time for OpenGL 4.3
if (GLEW_VERSION_4_3) {
g_hud.AddRadioButton(0, "GLSL Compute", false, 10, 150, callbackKernel, kGLSLCompute, 'k');
}
#endif
g_hud.AddRadioButton(1, "Wire (W)", g_displayStyle == kWire, 200, 10, callbackDisplayStyle, 0, 'w');
g_hud.AddRadioButton(1, "Shaded", g_displayStyle == kShaded, 200, 30, callbackDisplayStyle, 1, 'w');
g_hud.AddRadioButton(1, "Wire+Shaded", g_displayStyle == kWireShaded, 200, 50, callbackDisplayStyle, 2, 'w');
g_hud.AddRadioButton(1, "Varying color", g_displayStyle == kVaryingColor, 200, 70, callbackDisplayStyle, 3, 'w');
g_hud.AddRadioButton(1, "FaceVarying color", g_displayStyle == kFaceVaryingColor, 200, 90, callbackDisplayStyle, 4, 'w');
g_hud.AddCheckBox("Cage Edges (H)", g_drawCageEdges != 0,
350, 10, callbackCheckBox, kHUD_CB_DISPLAY_CAGE_EDGES, 'h');
g_hud.AddCheckBox("Cage Verts (J)", g_drawCageVertices != 0,
350, 30, callbackCheckBox, kHUD_CB_DISPLAY_CAGE_VERTS, 'j');
g_hud.AddCheckBox("Animate vertices (M)", g_moveScale != 0,
350, 50, callbackCheckBox, kHUD_CB_ANIMATE_VERTICES, 'm');
g_hud.AddCheckBox("Patch Color (P)", g_displayPatchColor != 0,
350, 70, callbackCheckBox, kHUD_CB_DISPLAY_PATCH_COLOR, 'p');
g_hud.AddCheckBox("Screen space LOD (V)", g_screenSpaceTess != 0,
350, 90, callbackCheckBox, kHUD_CB_VIEW_LOD, 'v');
g_hud.AddCheckBox("Fractional spacing (T)", g_fractionalSpacing != 0,
350, 110, callbackCheckBox, kHUD_CB_FRACTIONAL_SPACING, 't');
g_hud.AddCheckBox("Frustum Patch Culling (B)", g_patchCull != 0,
350, 130, callbackCheckBox, kHUD_CB_PATCH_CULL, 'b');
g_hud.AddCheckBox("Freeze (spc)", g_freeze != 0,
350, 150, callbackCheckBox, kHUD_CB_FREEZE, ' ');
if (OpenSubdiv::OsdGLDrawContext::SupportsAdaptiveTessellation())
g_hud.AddCheckBox("Adaptive (`)", g_adaptive!=0, 10, 190, callbackAdaptive, 0, '`');
for (int i = 1; i < 11; ++i) {
char level[16];
sprintf(level, "Lv. %d", i);
g_hud.AddRadioButton(3, level, i==2, 10, 210+i*20, callbackLevel, i, '0'+(i%10));
}
for (int i = 0; i < (int)g_defaultShapes.size(); ++i) {
g_hud.AddRadioButton(4, g_defaultShapes[i].name.c_str(), i==g_currentShape, -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);
glGenQueries(1, &g_primQuery);
glGenVertexArrays(1, &g_vao);
glGenVertexArrays(1, &g_cageVertexVAO);
glGenVertexArrays(1, &g_cageEdgeVAO);
glGenBuffers(1, &g_cageVertexVBO);
glGenBuffers(1, &g_cageEdgeVBO);
}
//------------------------------------------------------------------------------
static void
idle() {
if (not g_freeze)
g_frame++;
updateGeom();
if (g_repeatCount != 0 and g_frame >= g_repeatCount)
g_running = 0;
}
//------------------------------------------------------------------------------
static void
callbackError(OpenSubdiv::OsdErrorType err, const char *message)
{
printf("OsdError: %d\n", err);
printf("%s", message);
}
//------------------------------------------------------------------------------
static void
setGLCoreProfile()
{
#if GLFW_VERSION_MAJOR>=3
#define glfwOpenWindowHint glfwWindowHint
#define GLFW_OPENGL_VERSION_MAJOR GLFW_CONTEXT_VERSION_MAJOR
#define GLFW_OPENGL_VERSION_MINOR GLFW_CONTEXT_VERSION_MINOR
#endif
glfwOpenWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
#if not defined(__APPLE__)
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MAJOR, 4);
#ifdef OPENSUBDIV_HAS_GLSL_COMPUTE
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MINOR, 3);
#else
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MINOR, 2);
#endif
#else
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MAJOR, 3);
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MINOR, 2);
#endif
glfwOpenWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
}
//------------------------------------------------------------------------------
int main(int argc, char ** argv)
{
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_defaultShapes.push_back(SimpleShape(str.c_str(), argv[1], kCatmark));
}
}
}
initializeShapes();
OsdSetErrorCallback(callbackError);
if (not glfwInit()) {
printf("Failed to initialize GLFW\n");
return 1;
}
static const char windowTitle[] = "OpenSubdiv glViewer";
#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);
// accommocate high DPI displays (e.g. mac retina displays)
glfwGetFramebufferSize(g_window, &g_width, &g_height);
glfwSetFramebufferSizeCallback(g_window, reshape);
glfwSetKeyCallback(g_window, keyboard);
glfwSetCursorPosCallback(g_window, motion);
glfwSetMouseButtonCallback(g_window, mouse);
glfwSetWindowCloseCallback(g_window, windowClose);
#else
if (glfwOpenWindow(g_width, g_height, 8, 8, 8, 8, 24, 8,
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
// activate feature adaptive tessellation if OSD supports it
g_adaptive = OpenSubdiv::OsdGLDrawContext::SupportsAdaptiveTessellation();
initGL();
linkDefaultProgram();
glfwSwapInterval(0);
initHUD();
rebuildOsdMesh();
while (g_running) {
idle();
display();
#if GLFW_VERSION_MAJOR>=3
glfwPollEvents();
glfwSwapBuffers(g_window);
#else
glfwSwapBuffers();
#endif
glFinish();
}
uninitGL();
glfwTerminate();
}
//------------------------------------------------------------------------------
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