96 lines
2.5 KiB
C++
96 lines
2.5 KiB
C++
|
/*
|
||
|
|
* Shader.cpp
|
||
|
|
*
|
||
|
|
* Copyright (C) 2009 Matthias Schiffer <matthias@gamezock.de>
|
||
|
|
*
|
||
|
|
* This program is free software: you can redistribute it and/or modify it
|
||
|
|
* under the terms of the GNU Lesser General Public License as published by the
|
||
|
|
* Free Software Foundation, either version 3 of the License, or
|
||
|
|
* (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful, but
|
||
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
||
|
|
* See the GNU Lesser General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU Lesser General Public License along
|
||
|
|
* with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "Shader.h"
|
||
|
|
#include <iostream>
|
||
|
|
#include <fstream>
|
||
|
|
#include <vector>
|
||
|
|
#include <boost/scoped_array.hpp>
|
||
|
|
|
||
|
|
namespace Zoom {
|
||
|
|
|
||
|
|
bool Shader::loadProgram(const std::string &vertexShader, const std::string &fragmentShader) {
|
||
|
|
GLhandleARB program, vs = 0, fs = 0;
|
||
|
|
|
||
|
|
if(!vertexShader.empty())
|
||
|
|
vs = loadShader(vertexShader, GL_VERTEX_SHADER_ARB);
|
||
|
|
|
||
|
|
if(!fragmentShader.empty())
|
||
|
|
fs = loadShader(fragmentShader, GL_FRAGMENT_SHADER_ARB);
|
||
|
|
|
||
|
|
program = glCreateProgramObjectARB();
|
||
|
|
|
||
|
|
if(vs)
|
||
|
|
glAttachObjectARB(program, vs);
|
||
|
|
|
||
|
|
if(fs)
|
||
|
|
glAttachObjectARB(program, fs);
|
||
|
|
|
||
|
|
glLinkProgramARB(program);
|
||
|
|
printInfoLog(program);
|
||
|
|
|
||
|
|
glUseProgramObjectARB(program);
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
GLhandleARB Shader::loadShader(const std::string &name, GLenum type) {
|
||
|
|
std::vector<std::string> lines;
|
||
|
|
std::ifstream file(("shader/" + name).c_str(), std::ios_base::in);
|
||
|
|
if(!file.good())
|
||
|
|
throw std::ios::failure("Can't read file '" + name + "'");
|
||
|
|
|
||
|
|
while(file.good() && !file.eof()) {
|
||
|
|
std::string line;
|
||
|
|
std::getline(file, line);
|
||
|
|
|
||
|
|
if(!line.empty())
|
||
|
|
lines.push_back(line);
|
||
|
|
}
|
||
|
|
|
||
|
|
boost::scoped_array<const char *> strings(new const char*[lines.size()]);
|
||
|
|
for(std::size_t i = 0; i < lines.size(); ++i) {
|
||
|
|
strings[i] = lines[i].c_str();
|
||
|
|
}
|
||
|
|
|
||
|
|
GLhandleARB shader = glCreateShaderObjectARB(type);
|
||
|
|
glShaderSourceARB(shader, lines.size(), strings.get(), 0);
|
||
|
|
glCompileShaderARB(shader);
|
||
|
|
printInfoLog(shader);
|
||
|
|
|
||
|
|
return shader;
|
||
|
|
}
|
||
|
|
|
||
|
|
void Shader::printInfoLog(GLhandleARB obj) {
|
||
|
|
int length = 0;
|
||
|
|
|
||
|
|
glGetObjectParameterivARB(obj, GL_OBJECT_INFO_LOG_LENGTH_ARB, &length);
|
||
|
|
|
||
|
|
if(length > 0) {
|
||
|
|
boost::scoped_array<char> log(new char[length]);
|
||
|
|
|
||
|
|
int foo;
|
||
|
|
glGetInfoLogARB(obj, length, &foo, log.get());
|
||
|
|
std::cerr << log.get() << std::endl;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
}
|