| // This file is part of Eigen, a lightweight C++ template library |
| // for linear algebra. |
| // |
| // Copyright (C) 2010 Gael Guennebaud <gael.guennebaud@inria.fr> |
| // |
| // This Source Code Form is subject to the terms of the Mozilla |
| // Public License v. 2.0. If a copy of the MPL was not distributed |
| // with this file, You can obtain one at http://mozilla.org/MPL/2.0/. |
| |
| #include <main.h> |
| #include <iostream> |
| #include <string> |
| |
| #if defined(__APPLE_CC__) |
| // Prevent deprecation warnings caused by GLEW on MacOS. |
| #define GL_SILENCE_DEPRECATION 1 |
| #endif |
| #include <GL/glew.h> |
| #include <Eigen/OpenGLSupport> |
| #if defined(__APPLE_CC__) |
| #include <GLUT/glut.h> |
| #else |
| #include <GL/freeglut.h> |
| #endif |
| |
| using namespace Eigen; |
| |
| #define VERIFY_MATRIX(CODE,REF) { \ |
| glMatrixMode(GL_MODELVIEW); \ |
| glLoadIdentity(); \ |
| CODE; \ |
| Matrix<float,4,4,ColMajor> m; m.setZero(); \ |
| glGet(GL_MODELVIEW_MATRIX, m); \ |
| if(!(REF).cast<float>().isApprox(m)) { \ |
| std::cerr << "Expected:\n" << ((REF).cast<float>()) << "\n" << "got\n" << m << "\n\n"; \ |
| } \ |
| VERIFY_IS_APPROX((REF).cast<float>(), m); \ |
| } |
| |
| #define VERIFY_UNIFORM(SUFFIX,NAME,TYPE) { \ |
| TYPE value; value.setRandom(); \ |
| TYPE data; \ |
| int loc = glGetUniformLocation(prg_id, #NAME); \ |
| VERIFY((loc!=-1) && "uniform not found"); \ |
| glUniform(loc,value); \ |
| EIGEN_CAT(glGetUniform,SUFFIX)(prg_id,loc,data.data()); \ |
| if(!value.isApprox(data)) { \ |
| std::cerr << "Expected:\n" << value << "\n" << "got\n" << data << "\n\n"; \ |
| } \ |
| VERIFY_IS_APPROX(value, data); \ |
| } |
| |
| #define VERIFY_UNIFORMi(NAME,TYPE) { \ |
| TYPE value = TYPE::Random().eval().cast<float>().cast<TYPE::Scalar>(); \ |
| TYPE data; \ |
| int loc = glGetUniformLocation(prg_id, #NAME); \ |
| VERIFY((loc!=-1) && "uniform not found"); \ |
| glUniform(loc,value); \ |
| glGetUniformiv(prg_id,loc,(GLint*)data.data()); \ |
| if(!value.isApprox(data)) { \ |
| std::cerr << "Expected:\n" << value << "\n" << "got\n" << data << "\n\n"; \ |
| } \ |
| VERIFY_IS_APPROX(value, data); \ |
| } |
| |
| void printProgramInfoLog(GLuint objectID) |
| { |
| int infologLength, charsWritten; |
| GLchar *infoLog; |
| glGetProgramiv(objectID, GL_INFO_LOG_LENGTH, &infologLength); |
| if(infologLength > 0) |
| { |
| infoLog = new GLchar[infologLength]; |
| glGetProgramInfoLog(objectID, infologLength, &charsWritten, infoLog); |
| if (charsWritten > 0) |
| std::cerr << "Program info : \n" << infoLog << std::endl; |
| delete[] infoLog; |
| } |
| } |
| |
| void printShaderInfoLog(GLuint objectID) |
| { |
| int infologLength, charsWritten; |
| GLchar *infoLog; |
| glGetShaderiv(objectID, GL_INFO_LOG_LENGTH, &infologLength); |
| if(infologLength > 0) |
| { |
| infoLog = new GLchar[infologLength]; |
| glGetShaderInfoLog(objectID, infologLength, &charsWritten, infoLog); |
| if (charsWritten > 0) |
| std::cerr << "Shader info : \n" << infoLog << std::endl; |
| delete[] infoLog; |
| } |
| } |
| |
| GLint createProgram(const char* vtx, const char* frg, bool print_errors = true) |
| { |
| GLint prg_id = glCreateProgram(); |
| GLint vtx_id = glCreateShader(GL_VERTEX_SHADER); |
| GLint frg_id = glCreateShader(GL_FRAGMENT_SHADER); |
| GLint ok; |
| |
| glShaderSource(vtx_id, 1, &vtx, 0); |
| glCompileShader(vtx_id); |
| glGetShaderiv(vtx_id, GL_COMPILE_STATUS, &ok); |
| if(!ok) |
| { |
| if (print_errors) |
| { |
| std::cerr << "vtx compilation failed\n"; |
| std::cerr << "Source:\n" << vtx << "\n"; |
| printShaderInfoLog(vtx_id); |
| } |
| glDeleteShader(vtx_id); |
| return GL_ZERO; |
| } |
| |
| glShaderSource(frg_id, 1, &frg, 0); |
| glCompileShader(frg_id); |
| glGetShaderiv(frg_id, GL_COMPILE_STATUS, &ok); |
| if(!ok) |
| { |
| if (print_errors) |
| { |
| std::cerr << "frg compilation failed.\n"; |
| std::cerr << "Source:\n" << frg << "\n"; |
| printShaderInfoLog(frg_id); |
| } |
| glDeleteShader(vtx_id); |
| glDeleteShader(frg_id); |
| return GL_ZERO; |
| } |
| |
| glAttachShader(prg_id, vtx_id); |
| glAttachShader(prg_id, frg_id); |
| glLinkProgram(prg_id); |
| |
| // Delete shaders once linked. |
| glDeleteShader(vtx_id); |
| glDeleteShader(frg_id); |
| glGetProgramiv(prg_id, GL_LINK_STATUS, &ok); |
| if(!ok) |
| { |
| if (print_errors) |
| { |
| std::cerr << "linking failed.\n"; |
| printProgramInfoLog(prg_id); |
| } |
| glDeleteProgram(prg_id); |
| return GL_ZERO; |
| } |
| |
| glUseProgram(prg_id); |
| return prg_id; |
| } |
| |
| GLint createProgram(const std::string& vtx, const std::string& frg, bool print_errors = true) |
| { |
| return createProgram(vtx.c_str(), frg.c_str(), print_errors); |
| } |
| |
| std::string getGlslVersionString(int gl_major_version, int gl_minor_version) |
| { |
| switch (gl_major_version) |
| { |
| case 2: |
| switch (gl_minor_version) |
| { |
| case 0: |
| return "#version 110"; |
| case 1: |
| return "#version 120"; |
| } |
| break; |
| case 3: |
| switch (gl_minor_version) |
| { |
| case 0: |
| return "#version 130"; |
| case 1: |
| return "#version 140"; |
| case 2: |
| return "#version 150"; |
| case 3: |
| return "#version 330"; |
| } |
| break; |
| case 4: |
| switch (gl_minor_version) |
| { |
| case 0: |
| return "#version 400"; |
| case 1: |
| return "#version 410"; |
| case 2: |
| return "#version 420"; |
| case 3: |
| return "#version 430"; |
| case 4: |
| return "#version 440"; |
| case 5: |
| return "#version 450"; |
| case 6: |
| return "#version 460"; |
| } |
| break; |
| } |
| return ""; |
| } |
| |
| void find_and_replace( |
| std::string& str, |
| const std::string& find, |
| const std::string& replace) |
| { |
| size_t loc = 0; |
| size_t flen = find.length(); |
| size_t rlen = replace.length(); |
| while ( (loc = str.find(find, loc)) != std::string::npos) { |
| str.replace(loc, flen, replace); |
| loc += rlen; |
| } |
| } |
| |
| // Finds and replaces a set of substrings in a string. |
| std::string format( |
| const std::string& str, |
| const std::vector<std::string>& find, |
| const std::vector<std::string>& replace) |
| { |
| std::string out = str; |
| for (std::size_t i=0; i<find.size(); ++i) { |
| find_and_replace(out, find[i], replace[i]); |
| } |
| return out; |
| } |
| |
| // GLUT display function that runs test. Must be run within the display loop |
| // in order to properly destroy resources. |
| void openglsupport_test_loop() |
| { |
| // Get context info. |
| const GLubyte* gl_version_string = glGetString(GL_VERSION); |
| std::cerr << "GL version: " << gl_version_string << std::endl; |
| std::cerr << "GLSL version: " << glGetString(GL_SHADING_LANGUAGE_VERSION) << std::endl; |
| // Parse version from string since GL_MAJOR_VERSION is only supported in GL 3.0+. |
| // Version string guaranteed to be <major>.<minor><vender extension>. |
| GLint gl_major_version = gl_version_string[0] - '0'; |
| GLint gl_minor_version = gl_version_string[2] - '0'; |
| bool legacy_gl = gl_major_version < 3 || (gl_major_version == 3 && gl_minor_version < 2); |
| |
| // Fixed-function pipeline removed in OpenGL 3.2. |
| if (legacy_gl) |
| { |
| // Draw a basic triangle. |
| Vector3f v3f; |
| Matrix3f rot; |
| glBegin(GL_POINTS); |
| { |
| glVertex(v3f); |
| glVertex(2*v3f+v3f); |
| glVertex(rot*v3f); |
| } |
| glEnd(); |
| |
| // 4x4 matrices |
| Matrix4f mf44; mf44.setRandom(); |
| VERIFY_MATRIX(glLoadMatrix(mf44), mf44); |
| VERIFY_MATRIX(glMultMatrix(mf44), mf44); |
| Matrix4d md44; md44.setRandom(); |
| VERIFY_MATRIX(glLoadMatrix(md44), md44); |
| VERIFY_MATRIX(glMultMatrix(md44), md44); |
| |
| // Quaternion |
| Quaterniond qd(AngleAxisd(internal::random<double>(), Vector3d::Random())); |
| VERIFY_MATRIX(glRotate(qd), Projective3d(qd).matrix()); |
| |
| Quaternionf qf(AngleAxisf(internal::random<double>(), Vector3f::Random())); |
| VERIFY_MATRIX(glRotate(qf), Projective3f(qf).matrix()); |
| |
| // 3D Transform |
| Transform<float,3,AffineCompact> acf3; acf3.matrix().setRandom(); |
| VERIFY_MATRIX(glLoadMatrix(acf3), Projective3f(acf3).matrix()); |
| VERIFY_MATRIX(glMultMatrix(acf3), Projective3f(acf3).matrix()); |
| |
| Transform<float,3,Affine> af3(acf3); |
| VERIFY_MATRIX(glLoadMatrix(af3), Projective3f(af3).matrix()); |
| VERIFY_MATRIX(glMultMatrix(af3), Projective3f(af3).matrix()); |
| |
| Transform<float,3,Projective> pf3; pf3.matrix().setRandom(); |
| VERIFY_MATRIX(glLoadMatrix(pf3), Projective3f(pf3).matrix()); |
| VERIFY_MATRIX(glMultMatrix(pf3), Projective3f(pf3).matrix()); |
| |
| Transform<double,3,AffineCompact> acd3; acd3.matrix().setRandom(); |
| VERIFY_MATRIX(glLoadMatrix(acd3), Projective3d(acd3).matrix()); |
| VERIFY_MATRIX(glMultMatrix(acd3), Projective3d(acd3).matrix()); |
| |
| Transform<double,3,Affine> ad3(acd3); |
| VERIFY_MATRIX(glLoadMatrix(ad3), Projective3d(ad3).matrix()); |
| VERIFY_MATRIX(glMultMatrix(ad3), Projective3d(ad3).matrix()); |
| |
| Transform<double,3,Projective> pd3; pd3.matrix().setRandom(); |
| VERIFY_MATRIX(glLoadMatrix(pd3), Projective3d(pd3).matrix()); |
| VERIFY_MATRIX(glMultMatrix(pd3), Projective3d(pd3).matrix()); |
| |
| // translations (2D and 3D) |
| { |
| Vector2f vf2; vf2.setRandom(); Vector3f vf23; vf23 << vf2, 0; |
| VERIFY_MATRIX(glTranslate(vf2), Projective3f(Translation3f(vf23)).matrix()); |
| Vector2d vd2; vd2.setRandom(); Vector3d vd23; vd23 << vd2, 0; |
| VERIFY_MATRIX(glTranslate(vd2), Projective3d(Translation3d(vd23)).matrix()); |
| |
| Vector3f vf3; vf3.setRandom(); |
| VERIFY_MATRIX(glTranslate(vf3), Projective3f(Translation3f(vf3)).matrix()); |
| Vector3d vd3; vd3.setRandom(); |
| VERIFY_MATRIX(glTranslate(vd3), Projective3d(Translation3d(vd3)).matrix()); |
| |
| Translation<float,3> tf3; tf3.vector().setRandom(); |
| VERIFY_MATRIX(glTranslate(tf3), Projective3f(tf3).matrix()); |
| |
| Translation<double,3> td3; td3.vector().setRandom(); |
| VERIFY_MATRIX(glTranslate(td3), Projective3d(td3).matrix()); |
| } |
| |
| // scaling (2D and 3D) |
| { |
| Vector2f vf2; vf2.setRandom(); Vector3f vf23; vf23 << vf2, 1; |
| VERIFY_MATRIX(glScale(vf2), Projective3f(Scaling(vf23)).matrix()); |
| Vector2d vd2; vd2.setRandom(); Vector3d vd23; vd23 << vd2, 1; |
| VERIFY_MATRIX(glScale(vd2), Projective3d(Scaling(vd23)).matrix()); |
| |
| Vector3f vf3; vf3.setRandom(); |
| VERIFY_MATRIX(glScale(vf3), Projective3f(Scaling(vf3)).matrix()); |
| Vector3d vd3; vd3.setRandom(); |
| VERIFY_MATRIX(glScale(vd3), Projective3d(Scaling(vd3)).matrix()); |
| |
| UniformScaling<float> usf(internal::random<float>()); |
| VERIFY_MATRIX(glScale(usf), Projective3f(usf).matrix()); |
| |
| UniformScaling<double> usd(internal::random<double>()); |
| VERIFY_MATRIX(glScale(usd), Projective3d(usd).matrix()); |
| } |
| } else { |
| std::cerr << "Warning: fixed-function pipeline was not tested.\n"; |
| } |
| |
| // Dynamic shader substitution variables. |
| // Modern shaders require a version string, and newer runtimes fail to |
| // compile old GLSL versions. Thus, we dynamically set the GLSL version |
| // string based on runtime. Also, pre OpenGL 3.0, the output gl_FragColor was |
| // built-in. This was deprecated in OpenGL 3.0, requiring us to explicitly |
| // define the output variable. |
| std::vector<std::string> glsl_vars; |
| glsl_vars.push_back("${GLSL_VERSION}"); |
| glsl_vars.push_back("${FRAG_OUTPUT_DECLARATION}"); |
| glsl_vars.push_back("${FRAG_OUTPUT_VARIABLE}"); |
| |
| std::vector<std::string> glsl_vals; |
| glsl_vals.push_back(getGlslVersionString(gl_major_version, gl_minor_version)); |
| if (gl_major_version >= 3) { |
| glsl_vals.push_back("out vec4 fragColor;"); |
| glsl_vals.push_back("fragColor"); |
| } else { |
| glsl_vals.push_back(""); |
| glsl_vals.push_back("gl_FragColor"); |
| } |
| |
| // uniform |
| { |
| // vertex shader. |
| std::string vtx = format( |
| "${GLSL_VERSION}\n" |
| "void main(void) {\n" |
| " gl_Position = vec4(0,0,0,1);\n" |
| "}\n", |
| glsl_vars, glsl_vals); |
| |
| #ifdef GL_VERSION_2_0 |
| if(GLEW_VERSION_2_0 && GL_VERSION_2_0) |
| { |
| std::string frg = format( |
| "${GLSL_VERSION}\n" |
| "uniform vec2 v2f;\n" |
| "uniform vec3 v3f;\n" |
| "uniform vec4 v4f;\n" |
| "uniform ivec2 v2i;\n" |
| "uniform ivec3 v3i;\n" |
| "uniform ivec4 v4i;\n" |
| "uniform mat2 m2f;\n" |
| "uniform mat3 m3f;\n" |
| "uniform mat4 m4f;\n" |
| "${FRAG_OUTPUT_DECLARATION}\n" |
| "void main(void) { \n" |
| " ${FRAG_OUTPUT_VARIABLE} = vec4(v2f[0]+v3f[0]+v4f[0])+vec4(v2i[0]+v3i[0]+v4i[0])+vec4(m2f[0][0]+m3f[0][0]+m4f[0][0]);\n" |
| "}\n", |
| glsl_vars, glsl_vals); |
| |
| GLint prg_id = createProgram(vtx, frg); |
| VERIFY(prg_id > 0 && "Failed to create program."); |
| VERIFY_UNIFORM(fv, v2f, Vector2f); |
| VERIFY_UNIFORM(fv, v3f, Vector3f); |
| VERIFY_UNIFORM(fv, v4f, Vector4f); |
| VERIFY_UNIFORMi(v2i, Vector2i); |
| VERIFY_UNIFORMi(v3i, Vector3i); |
| VERIFY_UNIFORMi(v4i, Vector4i); |
| VERIFY_UNIFORM(fv, m2f, Matrix2f); |
| VERIFY_UNIFORM(fv, m3f, Matrix3f); |
| VERIFY_UNIFORM(fv, m4f, Matrix4f); |
| glDeleteProgram(prg_id); |
| } |
| else |
| #endif |
| std::cerr << "Warning: opengl 2.0 was not tested.\n"; |
| |
| #ifdef GL_VERSION_2_1 |
| if(GLEW_VERSION_2_1 && GL_VERSION_2_1 && |
| (gl_major_version > 2 || (gl_major_version == 2 && gl_minor_version >= 1))) |
| { |
| std::string frg = format( |
| "${GLSL_VERSION}\n" |
| "uniform mat2x3 m23f;\n" |
| "uniform mat3x2 m32f;\n" |
| "uniform mat2x4 m24f;\n" |
| "uniform mat4x2 m42f;\n" |
| "uniform mat3x4 m34f;\n" |
| "uniform mat4x3 m43f;\n" |
| "${FRAG_OUTPUT_DECLARATION}\n" |
| "void main(void) {\n" |
| " ${FRAG_OUTPUT_VARIABLE} = vec4(m23f[0][0]+m32f[0][0]+m24f[0][0]+m42f[0][0]+m34f[0][0]+m43f[0][0]);\n" |
| "}\n", |
| glsl_vars, glsl_vals); |
| |
| GLint prg_id = createProgram(vtx, frg); |
| VERIFY(prg_id > 0 && "Failed to create program."); |
| typedef Matrix<float,2,3> Matrix23f; |
| typedef Matrix<float,3,2> Matrix32f; |
| typedef Matrix<float,2,4> Matrix24f; |
| typedef Matrix<float,4,2> Matrix42f; |
| typedef Matrix<float,3,4> Matrix34f; |
| typedef Matrix<float,4,3> Matrix43f; |
| |
| VERIFY_UNIFORM(fv, m23f, Matrix23f); |
| VERIFY_UNIFORM(fv, m32f, Matrix32f); |
| VERIFY_UNIFORM(fv, m24f, Matrix24f); |
| VERIFY_UNIFORM(fv, m42f, Matrix42f); |
| VERIFY_UNIFORM(fv, m34f, Matrix34f); |
| VERIFY_UNIFORM(fv, m43f, Matrix43f); |
| glDeleteProgram(prg_id); |
| } |
| else |
| #endif |
| std::cerr << "Warning: opengl 2.1 was not tested.\n"; |
| |
| #ifdef GL_VERSION_3_0 |
| if(GLEW_VERSION_3_0 && GL_VERSION_3_0 && gl_major_version >= 3) |
| { |
| std::string frg = format( |
| "${GLSL_VERSION}\n" |
| "uniform uvec2 v2ui;\n" |
| "uniform uvec3 v3ui;\n" |
| "uniform uvec4 v4ui;\n" |
| "${FRAG_OUTPUT_DECLARATION}\n" |
| "void main(void) {\n" |
| " ${FRAG_OUTPUT_VARIABLE} = vec4(v2ui[0]+v3ui[0]+v4ui[0]);\n" |
| "}\n", |
| glsl_vars, glsl_vals); |
| |
| GLint prg_id = createProgram(vtx, frg); |
| VERIFY(prg_id > 0 && "Failed to create program."); |
| typedef Matrix<unsigned int,2,1> Vector2ui; |
| typedef Matrix<unsigned int,3,1> Vector3ui; |
| typedef Matrix<unsigned int,4,1> Vector4ui; |
| |
| VERIFY_UNIFORMi(v2ui, Vector2ui); |
| VERIFY_UNIFORMi(v3ui, Vector3ui); |
| VERIFY_UNIFORMi(v4ui, Vector4ui); |
| glDeleteProgram(prg_id); |
| } |
| else |
| #endif |
| std::cerr << "Warning: opengl 3.0 was not tested.\n"; |
| |
| // dvecn supported if >= 4.1 or ARB_vertex_attrib_64bit |
| bool has_fp64_native = (gl_major_version == 4 && gl_minor_version >= 1); |
| bool has_fp64_extension = false; |
| #ifdef GLEW_ARB_gpu_shader_fp64 |
| if(GLEW_ARB_gpu_shader_fp64) |
| { |
| // Check that extension can actually be compiled. |
| if (has_fp64_extension) |
| { |
| std::string frg = format( |
| "${GLSL_VERSION}\n" |
| "#extension GL_ARB_gpu_shader_fp64 : enable\n" |
| "uniform dvec2 dv2;\n" |
| "${FRAG_OUTPUT_DECLARATION}\n" |
| "void main(void) {\n" |
| " ${FRAG_OUTPUT_VARIABLE} = vec4(dv2.x, dv2.y, dv2.x, dv2.y);\n" |
| "}\n", |
| glsl_vars, glsl_vals); |
| GLint prg_id = createProgram(vtx, frg, /*print_errors=*/false); |
| if (prg_id) |
| { |
| has_fp64_extension = true; |
| glDeleteProgram(prg_id); |
| } |
| } |
| } |
| #endif |
| |
| if( has_fp64_native || has_fp64_extension ) |
| { |
| std::vector<std::string> glsl_vars_with_extension = glsl_vars; |
| glsl_vars_with_extension.push_back("${GLSL_EXTENSIONS}"); |
| std::vector<std::string> glsl_vals_with_extension = glsl_vals; |
| if (has_fp64_extension) |
| { |
| glsl_vals_with_extension.push_back("#extension GL_ARB_gpu_shader_fp64 : enable"); |
| } |
| else |
| { |
| glsl_vals_with_extension.push_back(""); |
| } |
| |
| std::string frg = format( |
| "${GLSL_VERSION}\n" |
| "${GLSL_EXTENSIONS}\n" |
| "uniform dvec2 v2d;\n" |
| "uniform dvec3 v3d;\n" |
| "uniform dvec4 v4d;\n" |
| "${FRAG_OUTPUT_DECLARATION}\n" |
| "void main(void) {\n" |
| " ${FRAG_OUTPUT_VARIABLE} = vec4(v2d[0]+v3d[0]+v4d[0]);\n" |
| "}\n", |
| glsl_vars_with_extension, glsl_vals_with_extension); |
| |
| GLint prg_id = createProgram(vtx,frg); |
| VERIFY(prg_id > 0 && "Failed to create program."); |
| VERIFY_UNIFORM(dv, v2d, Vector2d); |
| VERIFY_UNIFORM(dv, v3d, Vector3d); |
| VERIFY_UNIFORM(dv, v4d, Vector4d); |
| glDeleteProgram(prg_id); |
| } |
| else |
| std::cerr << "Warning: dvec (fp64) was not tested.\n"; |
| } |
| |
| // Exit loop - Leaving main loop is supported by freeglut, otherwise we |
| // are forced to exit. |
| #ifdef FREEGLUT |
| glutLeaveMainLoop(); |
| // Trigger another display loop iteration. Otherwise, it just hangs. |
| glutPostRedisplay(); |
| #else |
| exit(0); |
| #endif |
| } |
| |
| EIGEN_DECLARE_TEST(openglsupport) |
| { |
| int argc = 0; |
| glutInit(&argc, 0); |
| |
| GLint glut_display_mode = GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH; |
| |
| #ifndef EIGEN_LEGACY_OPENGL |
| // Initialize 3.2+ OpenGL context. |
| #if defined(__APPLE_CC__) |
| glut_display_mode |= GLUT_3_2_CORE_PROFILE; |
| #elif defined(FREEGLUT) |
| glutInitContextVersion(3, 2); |
| glutInitContextFlags(GLUT_FORWARD_COMPATIBLE); |
| glutInitContextProfile(GLUT_CORE_PROFILE); |
| #endif |
| #endif |
| |
| glutInitDisplayMode(glut_display_mode); |
| glutInitWindowPosition(0, 0); |
| glutInitWindowSize(10, 10); |
| |
| int window = glutCreateWindow("Eigen"); |
| if(window <= 0) |
| { |
| std::cerr << "Error: Unable to create GLUT Window.\n"; |
| exit(1); |
| } |
| |
| glewExperimental = GL_TRUE; |
| if(glewInit() != GLEW_OK) |
| { |
| std::cerr << "Warning: Failed to initialize GLEW.\n"; |
| exit(1); |
| } |
| |
| // Run test in display, otherwise GLUT fails to clean up and leads to memory |
| // access errors on exit. |
| glutDisplayFunc(openglsupport_test_loop); |
| glutMainLoop(); |
| glutDestroyWindow(window); |
| } |
