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POSdl_image cannot find my jpg image; Won't load
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copied!<p>I am currently using the Code::Blocks IDE, c++, opengl and SDL to make a game- and I have hit a severe block in road, if you will. I am using SDL_image to load these jpg images for the textures, but they just will not load. Currently, I have tried placing them in every folder in the project, even places where it would supposedly make no difference. I have tried running both the debug and release versions from the IDE, by double-clicking the executable, and by running the executable from the command line. They all produce the same error: Could not load image: "the path to my image". I have tried using full paths, I have tried using relative paths, I have tried just about everything. I have tried various image formats, to no success. Other useful information may be: I am using ubuntu 11.04, I am using GIMP to create the images, and this is my code in complete (I'm sure most of it is irrelevant, but I am just putting it all down just-in-case):</p> <pre><code>#include <GL/gl.h> #include <GL/glu.h> #include <SDL/SDL.h> #include <SDL/SDL_image.h> #include <Cg/cg.h>// NEW: Cg Header #include <Cg/cgGL.h>// NEW: Cg OpenGL Specific Header #include <iostream> #include <math.h> #include <string> #include "../include/Camera.h" #define WINDOW_WIDTH 640 #define WINDOW_HEIGHT 480 // Keydown booleans bool key[321]; Uint8 *keystate; float fogDensity = 0.02f; static float fog_color[] = { 0.8f, 0.8f, 0.8f, 1.0f }; // Process pending events bool events() { SDL_Event event; if( !SDL_PollEvent(&event) ){ return true; } switch( event.type ) { case SDL_KEYDOWN : key[ event.key.keysym.sym ]=true; break; case SDL_KEYUP : key[ event.key.keysym.sym ]=false; break; case SDL_QUIT : return false; break; //one-per-keypress } keystate = SDL_GetKeyState(NULL); //continuous return true; } // Initialze OpenGL perspective matrix void setup(int width, int height) { glViewport( 0, 0, width, height ); glMatrixMode( GL_PROJECTION ); glEnable( GL_DEPTH_TEST ); gluPerspective( 45, (float)width/height, 0.1, 100 ); glMatrixMode( GL_MODELVIEW ); } Camera* cam = new Camera(); GLuint rocktexture; // This is a handle to our texture object GLuint earthtexture; //add some default materials here const GLfloat light_ambient[] = { 0.0f, 0.0f, 0.0f, 1.0f }; const GLfloat light_diffuse[] = { 1.0f, 1.0f, 1.0f, 1.0f }; const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f }; const GLfloat light_position[] = { 0.0f, 1.0f, 0.0f, 0.0f }; const GLfloat mat_ambient[] = { 0.7f, 0.7f, 0.7f, 1.0f }; const GLfloat mat_diffuse[] = { 0.8f, 0.8f, 0.8f, 1.0f }; const GLfloat mat_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f }; const GLfloat high_shininess[] = { 100.0f }; void MouseUpdate() { int x, y; SDL_GetMouseState(&x,&y); SDL_WarpMouse(WINDOW_WIDTH/2,WINDOW_HEIGHT/2); cam->yaw+=(x-WINDOW_WIDTH/2)*0.2; cam->pitch+=(y-WINDOW_HEIGHT/2)*0.2; if(cam->pitch<-90) { cam->pitch=-90; } if(cam->pitch>90) { cam->pitch=90; } } static void display(void) { while(events()) { MouseUpdate(); glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glLoadIdentity(); glRotatef(cam->pitch,1.0,0.0,0.0); //rotate our camera on the x-axis (left and right) glRotatef(cam->yaw,0.0,1.0,0.0); //rotate our camera on the y-axis (up and down) glTranslated(cam->camx,cam->camy,cam->camz); //translate the screen to the position of our camera glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient); glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse); glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular); glLightfv(GL_LIGHT0, GL_POSITION, light_position); glLightf(GL_LIGHT0, GL_QUADRATIC_ATTENUATION, 0); //glColor4f(1,1,1,0.5); glPushMatrix(); glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient); glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse); glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular); glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess); //glDisable(GL_CULL_FACE); glBindTexture(GL_TEXTURE_2D, rocktexture); glBegin(GL_TRIANGLE_FAN); glTexCoord2i(0,0);glVertex3f(-32,0,32); glTexCoord2i(1,0);glVertex3f(32,0,32); glTexCoord2i(1,1);glVertex3f(32,0,-32); glTexCoord2i(0,1);glVertex3f(-32,0,-32); glEnd(); //glEnable(GL_CULL_FACE); glPopMatrix(); /*glPushMatrix(); GLUquadric* earth = gluNewQuadric(); gluQuadricTexture(earth, true); gluQuadricDrawStyle(earth, GLU_FILL); gluQuadricNormals(earth, GLU_SMOOTH); gluQuadricOrientation(earth, GLU_OUTSIDE); gluSphere(earth, 1, 16, 16); gluDeleteQuadric(earth); glPopMatrix();*/ glFlush(); SDL_GL_SwapBuffers(); if (key[SDLK_ESCAPE] || key[SDLK_q]) { std::cout<<"Game Ended."<<std::endl; exit(0); } if (keystate[SDLK_w]) { cam->camx-=sin(cam->yaw*M_PI/180)/4; cam->camz+=cos(cam->yaw*M_PI/180)/4; } if (keystate[SDLK_s]) { cam->camx+=sin(cam->yaw*M_PI/180)/4; cam->camz-=cos(cam->yaw*M_PI/180)/4; } if (keystate[SDLK_a]) { cam->camx+=cos(cam->yaw*M_PI/180)/4; cam->camz+=sin(cam->yaw*M_PI/180)/4; } if (keystate[SDLK_d]) { cam->camx-=cos(cam->yaw*M_PI/180)/4; cam->camz-=sin(cam->yaw*M_PI/180)/4; } } } // Load the OpenGL texture GLuint loadImage(std::string path, GLuint tx,SDL_Surface* sur) { GLenum texture_format; GLint nOfColors; if ((sur = SDL_LoadBMP(path.c_str()))) { // Check that the image's width is a power of 2 if ((sur->w & (sur->w - 1)) != 0) { printf("warning: image's width is not a power of 2\n"); } // Also check if the height is a power of 2 if ((sur->h & (sur->h - 1)) != 0) { printf("warning: image's height is not a power of 2\n"); } // get the number of channels in the SDL surface nOfColors = sur->format->BytesPerPixel; if (nOfColors == 4) // contains an alpha channel { if (sur->format->Rmask == 0x000000ff) { texture_format = GL_RGBA; } else { texture_format = GL_BGRA; } } else if (nOfColors == 3) // no alpha channel { if (sur->format->Rmask == 0x000000ff) { texture_format = GL_RGB; } else { texture_format = GL_BGR; } } else { printf("warning: the image is not truecolor.. this will probably break\n"); // this error should not go unhandled } // Have OpenGL generate a texture object handle for us glGenTextures( 1, &tx ); // Bind the texture object glBindTexture( GL_TEXTURE_2D, tx ); // Set the texture's stretching properties glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR_MIPMAP_LINEAR); // Edit the texture object's image data using the information SDL_Surface gives us glTexImage2D( GL_TEXTURE_2D, 0, 3, sur->w, sur->h, 0, GL_BGR, GL_UNSIGNED_BYTE, sur->pixels); //build mip-maps gluBuild2DMipmaps(tx, 3, sur->w, sur->h, texture_format, GL_UNSIGNED_BYTE, sur->pixels); } else { printf("SDL could not load image: %s\n", SDL_GetError()); SDL_Quit(); return 1; } // Free the SDL_Surface only if it was successfully created if (sur) { SDL_FreeSurface(sur); } delete &texture_format; delete &nOfColors; return tx; } /* Program entry point */ int main(int argc, char *argv[]) { cam->camz=-5; cam->camy=-1; if ( SDL_Init(SDL_INIT_VIDEO) != 0 ) { std::cout<<"Unable to initialize SDL: %s\n"<<SDL_GetError()<<std::endl; return 1; } const SDL_VideoInfo* info = SDL_GetVideoInfo(); int vidFlags = SDL_OPENGL | SDL_GL_DOUBLEBUFFER; if (info->hw_available) {vidFlags |= SDL_HWSURFACE;} else {vidFlags |= SDL_SWSURFACE;} //int bpp = info->vfmt->BitsPerPixel; SDL_SetVideoMode(WINDOW_WIDTH, WINDOW_HEIGHT, 32, vidFlags); SDL_WM_SetCaption( "Treason", NULL); SDL_WarpMouse(WINDOW_WIDTH/2, WINDOW_HEIGHT/2); gluLookAt(cam->camx,cam->camy,cam->camz,0,0,0,0,1,0); glClearColor(0, 0, 0, 0);//background color white float lmodel_ambient[] = { 0.4f, 0.4f, 0.4f, 1.0f }; float local_view[] = { 0.0f }; glEnable(GL_TEXTURE_2D); glEnable(GL_LIGHTING); glEnable(GL_LIGHT0); glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient); glLightModelfv(GL_LIGHT_MODEL_LOCAL_VIEWER, local_view); glLightModelf(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR); //glEnable(GL_BLEND); //glBlendFunc(GL_SRC_ALPHA, GL_ONE); glEnable(GL_DITHER); //glHint(GL_PHONG_HINT_WIN, GL_NICEST); glShadeModel(GL_SMOOTH);//GL_PHONG_WIN glEnable(GL_DEPTH_TEST); glDepthFunc(GL_LEQUAL); glEnable(GL_CULL_FACE); glCullFace(GL_BACK); /* glEnable(GL_FOG); glHint(GL_FOG_HINT, GL_NICEST); glEnable(GL_FOG); glFogi(GL_FOG_MODE, GL_EXP); glFogf(GL_FOG_DENSITY, fogDensity); glFogfv(GL_FOG_COLOR, fog_color);*/ // glEnable(GL_STENCIL_TEST); //glStencilFunc(GL_KEEP, GL_KEEP, GL_INCR); SDL_Surface *rocktexsur; rocktexture = loadImage("rock.jpg", rocktexture, rocktexsur); SDL_Surface *earthtexsur; earthtexture = loadImage("earth.jpg", earthtexture, earthtexsur); setup(WINDOW_WIDTH, WINDOW_HEIGHT); display(); glDeleteTextures(1, &rocktexture); glDeleteTextures(1, &earthtexture); return 0; } </code></pre> <p>So if you find anything or know any reason why it would return an "SDL could not load image" Error, please respond! I can't continue on my project until this is resolved because it produces a segfault.</p>

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