110 lines
4.6 KiB
C++
110 lines
4.6 KiB
C++
/*************************************************************************************
|
|
* Copyright (c) 2016, Miguel Angel Astor Romero *
|
|
* All rights reserved. *
|
|
* *
|
|
* Redistribution and use in source and binary forms, with or without *
|
|
* modification, are permitted provided that the following conditions are met: *
|
|
* *
|
|
* 1. Redistributions of source code must retain the above copyright notice, this *
|
|
* list of conditions and the following disclaimer. *
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice, *
|
|
* this list of conditions and the following disclaimer in the documentation *
|
|
* and/or other materials provided with the distribution. *
|
|
* *
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND *
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED *
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE *
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR *
|
|
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES *
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; *
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND *
|
|
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT *
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS *
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
|
|
*************************************************************************************/
|
|
|
|
#include <iostream>
|
|
#include <GL/glew.h>
|
|
#include <glm/glm.hpp>
|
|
#include <glm/gtc/matrix_transform.hpp>
|
|
#include <glm/gtc/type_ptr.hpp>
|
|
|
|
#include "ogl.hpp"
|
|
#include "GLSLProgram.hpp"
|
|
|
|
#define BUFFER_OFFSET(i) ((char *)NULL + (i))
|
|
|
|
namespace ogl
|
|
{
|
|
// Variables
|
|
static CGLSLProgram m_program;
|
|
static PheromoneMap * m_phero_map = NULL;
|
|
static GLuint m_textureHandle;
|
|
static GLuint m_gradientHandle;
|
|
|
|
// Quad definition
|
|
static glm::vec4 vec_points[6];
|
|
static glm::vec2 vec_tex_coords[6];
|
|
|
|
static void quad() {
|
|
vec_tex_coords[0] = glm::vec2( 0.0f, 1.0f); vec_points[0] = glm::vec4( -0.5f, -0.5f, 0.0f, 1.0f );
|
|
vec_tex_coords[1] = glm::vec2( 0.0f, 0.0f); vec_points[1] = glm::vec4( -0.5f, 0.5f, 0.0f, 1.0f );
|
|
vec_tex_coords[2] = glm::vec2( 1.0f, 1.0f); vec_points[2] = glm::vec4( 0.5f, -0.5f, 0.0f, 1.0f );
|
|
vec_tex_coords[3] = glm::vec2( 1.0f, 1.0f); vec_points[3] = glm::vec4( 0.5f, -0.5f, 0.0f, 1.0f );
|
|
vec_tex_coords[4] = glm::vec2( 0.0f, 0.0f); vec_points[4] = glm::vec4( -0.5f, 0.5f, 0.0f, 1.0f );
|
|
vec_tex_coords[5] = glm::vec2( 1.0f, 0.0f); vec_points[5] = glm::vec4( 0.5f, 0.5f, 0.0f, 1.0f );
|
|
}
|
|
|
|
void initialize(PheromoneMap * phero_map) {
|
|
glEnable(GL_TEXTURE_2D);
|
|
|
|
glewInit();
|
|
|
|
quad();
|
|
m_phero_map = phero_map;
|
|
|
|
m_program.loadShader("shaders/basic.vert", CGLSLProgram::VERTEX);
|
|
m_program.loadShader("shaders/basic.frag", CGLSLProgram::FRAGMENT);
|
|
m_program.create_link();
|
|
m_program.enable();
|
|
m_program.addUniform("sTexture");
|
|
m_program.disable();
|
|
|
|
std::cout << "OpenGL Version: " << (char*)glGetString(GL_VERSION) << std::endl;
|
|
std::cout << "OpenGL Vendor: " << (char*)glGetString(GL_VENDOR) << std::endl;
|
|
}
|
|
|
|
void display() {
|
|
glClear(GL_COLOR_BUFFER_BIT);
|
|
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
|
|
|
|
if(m_phero_map != NULL)
|
|
m_textureHandle = m_phero_map->s_build_texture(); // Good grief!
|
|
|
|
m_program.enable();
|
|
glActiveTexture(GL_TEXTURE0);
|
|
glBindTexture(GL_TEXTURE_2D, m_textureHandle);
|
|
glUniform1i(m_program.getLocation("sTexture"), GL_TEXTURE0);
|
|
|
|
glBegin(GL_TRIANGLES); {
|
|
for(int i = 0; i < 6; i++) {
|
|
glTexCoord2f(vec_tex_coords[i].s, vec_tex_coords[i].t);
|
|
glVertex4f(vec_points[i].x, vec_points[i].y, vec_points[i].z, vec_points[i].w);
|
|
}
|
|
} glEnd();
|
|
|
|
m_program.disable();
|
|
}
|
|
|
|
void reshape(int w, int h) {
|
|
if(h == 0)
|
|
h = 1;
|
|
glViewport(0, 0, w, h);
|
|
glMatrixMode(GL_PROJECTION);
|
|
glLoadIdentity();
|
|
gluOrtho2D(-0.5, 0.5, -0.5, 0.5);
|
|
glMatrixMode(GL_MODELVIEW);
|
|
glLoadIdentity();
|
|
}
|
|
}
|