But now I'm stuck. Since I'm on a Mac, I've had to write my own function to load a BMP file, and following this advice, I had my function ready and working, at least in tutorial 6. For #7, I've added my own class, that's just a wrapper that contains the information needed for data, width and height, and it's called BMPData.cpp.
Anyway, the problem is that the texture, in the end, appears like this.
Here's my code, I've tried doing anything with it, but have come up with not solution in the past two days, any help is really appriciated
[source lang="cpp"]#include <SFML/Graphics.hpp>
#include <SFML/Audio.hpp>
#include <SFML/Network.hpp>
#include <SFML/Window.hpp>
#include <SFML/OpenGL.hpp>
#include <glm-0.9.3.4/glm/glm.hpp>
#include <fstream.h>
#include "ResourcePath.hpp"
// Include standard headers
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "BMPData.h"
using namespace glm;
GLfloat rtri, rquad;
GLfloat xrot, yrot, zrot, xspeed, yspeed, z = -5.0f;
std::string dataPath = "/Users/umbertosonnino/Documents/XCode/tobedeleted/tobedeleted/data/";
bool lp, fp, light;
GLfloat LightAmbient[] = { 0.5f, 0.5f, 0.5f, 1.0f };
GLfloat LightDiffuse[] = { 1.0f, 1.0f, 1.0f, 1.0f };
GLfloat LightPosition[] = { 0, 0, 2.0f, 1.0f, 1.0f };
GLuint filter = 0, texture[3];
BMPData *image;
BMPData *loadBMP(std::string filename){
FILE* file = NULL;
if(!filename.c_str()){
fprintf(stderr, "File name has not been handed to the program\n");
return NULL;
}
file = fopen(filename.c_str(), "rb");
if(file == NULL){
fprintf(stderr, "Error opening the file %s\n", filename.c_str());
return NULL;
}
unsigned long width = 0;
unsigned long height = 0;
unsigned long size = 0;
fseek(file, 18, SEEK_SET);
fread(&width, 4, 1, file);
fread(&height, 4, 1, file);
fseek(file, 0, SEEK_END);
size = ftell(file) - 54;
unsigned char* data = (unsigned char*) malloc(size);
fseek(file, 54, SEEK_SET);
fread(data, size, 1, file);
image = new BMPData(data, width, height);
fclose(file);
return image;
}
unsigned int loadGLTextures(){
int status = false;
BMPData *bmp;
if( (bmp = loadBMP(dataPath+"Crate.bmp")) ){
status = true;
glGenTextures(3, &texture[0]);
glBindTexture(GL_TEXTURE_2D, texture[0]);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, 3, (GLsizei)bmp->getWidth(), (GLsizei)bmp->getHeight(), 0, GL_BGR_EXT, GL_UNSIGNED_BYTE, bmp->getData());
glBindTexture(GL_TEXTURE_2D, texture[1]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, 3, (GLsizei)bmp->getWidth(), (GLsizei)bmp->getHeight(), 0, GL_BGR_EXT, GL_UNSIGNED_BYTE, bmp->getData());
// Create MipMapped Texture
glBindTexture(GL_TEXTURE_2D, texture[2]);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
gluBuild2DMipmaps(GL_TEXTURE_2D, 3, (GLsizei)bmp->getWidth(), (GLsizei)bmp->getHeight(), GL_BGR_EXT, GL_UNSIGNED_BYTE, bmp->getData());
}
if(bmp){
if(bmp->getData()){
bmp->~BMPData();
}
free(bmp);
}
return status;
}
int draw(){
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear The Screen And The Depth Buffer
glLoadIdentity(); // Reset The View
glTranslatef(0.0f,0.0f,z);
glRotatef(xrot,1.0f,0.0f,0.0f);
glRotatef(yrot,0.0f,1.0f,0.0f);
glBindTexture(GL_TEXTURE_2D, texture[filter]);
glBegin(GL_QUADS);
// Front Face
glNormal3f( 0.0f, 0.0f, 1.0f);
glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f);
glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, 1.0f);
glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, 1.0f);
// Back Face
glNormal3f( 0.0f, 0.0f,-1.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f);
glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f);
glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f);
glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f);
// Top Face
glNormal3f( 0.0f, 1.0f, 0.0f);
glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f);
glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, 1.0f, 1.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, 1.0f, 1.0f);
glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f);
// Bottom Face
glNormal3f( 0.0f,-1.0f, 0.0f);
glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, -1.0f, -1.0f);
glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, -1.0f, -1.0f);
glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f);
// Right face
glNormal3f( 1.0f, 0.0f, 0.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f);
glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f);
glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, 1.0f, 1.0f);
glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f);
// Left Face
glNormal3f(-1.0f, 0.0f, 0.0f);
glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f);
glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, 1.0f, 1.0f);
glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f);
glEnd();
xrot+=xspeed;
yrot+=yspeed;
return true;
}
int initGL(){
//resizeGL function in Nehe
glViewport(0, 0, 800, 600);
glMatrixMode(GL_PROJECTION); // Select The Projection Matrix
glLoadIdentity(); // Reset The Projection Matrix
// Calculate The Aspect Ratio Of The Window
gluPerspective(45.0f,(GLfloat)800/(GLfloat)600,0.1f,100.0f);
glMatrixMode(GL_MODELVIEW); // Select The Modelview Matrix
glLoadIdentity(); // Reset The Modelview Matrix
//end of resize function
if(!loadGLTextures()){
fprintf(stderr, "Error loading the bmp during initialization\n");
return false;
}
glEnable(GL_TEXTURE_2D);
glShadeModel(GL_SMOOTH);
glClearColor(0.0f, 0.0f, 0.3f, 0.5f);
glClearDepth(1.0f);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
glLightfv(GL_LIGHT1, GL_AMBIENT, LightAmbient);
glLightfv(GL_LIGHT1, GL_DIFFUSE, LightDiffuse);
glLightfv(GL_LIGHT1, GL_POSITION, LightPosition);
glEnable(GL_LIGHT1);
return true;
}
int main (int argc, const char * argv[])
{
sf::Window window(sf::VideoMode(800, 600), "Nehe Lighting and Keyboard Tutotorial: Embracing OpenGL");
initGL();
do
{
// Process events
sf::Event event;
while (window.pollEvent(event))
{
if(event.type == sf::Event::Resized){
glViewport(0, 0, event.size.width, event.size.height);
}
// Close window : exit
if (event.type == sf::Event::Closed)
window.close();
// Escape pressed : exit
if (event.type == sf::Event::KeyPressed && event.key.code == sf::Keyboard::Escape)
window.close();
if(event.type == sf::Event::KeyPressed &&
event.key.code == sf::Keyboard::L &&
!lp){
lp = true;
light = !light;
if(!light){
glDisable(GL_LIGHTING);
}
if(light){
glEnable(GL_LIGHTING);
}
}
if(event.type == sf::Event::KeyReleased && event.key.code == sf::Keyboard::L){
lp = false;
}
if(event.type == sf::Event::KeyPressed &&
event.key.code == sf::Keyboard::F &&
!fp){
fp = true;
filter += 1;
if(filter >2) filter = 0;
}
if(event.type == sf::Event::KeyReleased && event.key.code == sf::Keyboard::F){
fp = false;
}
//When pressing up i'm moving the cube farther into distance
if(event.type == sf::Event::KeyPressed &&
event.key.code == sf::Keyboard::U) z += 0.2f;
//When pressing down on the keyboard i'm moving the cuve closer to the screen
if(event.type == sf::Event::KeyPressed &&
event.key.code == sf::Keyboard:
) z-= 0.2f;if(event.type == sf::Event::KeyPressed &&
event.key.code == sf::Keyboard::Up) xspeed -= 0.1f;
if(event.type == sf::Event::KeyPressed &&
event.key.code == sf::Keyboard::Down) xspeed += 0.1f;
if(event.type == sf::Event::KeyPressed &&
event.key.code == sf::Keyboard::Left) yspeed -= 0.1f;
if(event.type == sf::Event::KeyPressed &&
event.key.code == sf::Keyboard::Right) yspeed += 0.1f;
}
draw();
// Update the window
window.display();
}while(window.isOpen());
return EXIT_SUCCESS;
}
[/source]
