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