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Thread: Trouble loading textures with glimg

  1. #1
    Junior Member Newbie
    Join Date
    Apr 2013
    Posts
    18

    Trouble loading textures with glimg

    I've been trying to use the Unofficial OpenGL SDK, but when I attempt to use the image loading library, I keep getting errors. Here is my code:

    Code :
    1 #include <stdlib.h>
    2 #include <stdio.h>
    3 #include <memory>
    4 #include <glload/gl_all.h>
    5 #include <glload/gll.hpp>
    6 #include <glimg/glimg.h>
    7 #include <GL/glfw.h>
    8  
    9 using namespace glimg;
    10  
    11 int main()
    12 {
    13     int     width, height;
    14     int     frame = 0;
    15     bool    running = true;
    16  
    17     glfwInit();
    18  
    19     if( !glfwOpenWindow( 1600, 900, 0, 0, 0, 0, 0, 0, GLFW_FULLSCREEN ) )
    20     {
    21         glfwTerminate();
    22         return 0;
    23     }
    24  
    25     glfwSetWindowTitle("GLFW Application");
    26  
    27 //////////////////////////////////////////////////////////////////////////////////
    28     if(glload::LoadFunctions() == glload::LS_LOAD_FAILED)
    29     {
    30         running = false;
    31         return 0;
    32     }
    33  
    34     GLuint theTexture = 0;
    35  
    36     try
    37     {
    38         std::auto_ptr<glimg::ImageSet> pImgSet(glimg::loaders::stb::LoadFromFile("TestImage.png"));
    39         theTexture = glimg::CreateTexture(pImgSet.get(), 0);
    40     }
    41     catch(glimg::loaders::stb::StbLoaderException &e)
    42     {
    43         printf("Image file loading failed.");
    44     }
    45     catch(glimg::TextureGenerationException &e)
    46     {
    47         printf("Texture creation failed.");
    48     }
    49 /////////////////////////////////////////////////////////////////////////////////
    50  
    51     while(running)
    52     {
    53         frame++;
    54  
    55         glfwGetWindowSize( &width, &height );
    56         height = height > 0 ? height : 1;
    57  
    58         glViewport( 0, 0, width, height );
    59  
    60         glClearColor( 0.0f, 0.0f, 0.0f, 0.0f );
    61         glClear( GL_COLOR_BUFFER_BIT );
    62  
    63         glMatrixMode(GL_PROJECTION);
    64         glLoadIdentity();
    65         glOrtho(0.0,width,height,0.0,-1.0,1.0);
    66  
    67         glfwSwapBuffers();
    68  
    69         // exit if ESC was pressed or window was closed
    70         running = !glfwGetKey(GLFW_KEY_ESC) && glfwGetWindowParam( GLFW_OPENED);
    71     }
    72  
    73     glfwTerminate();
    74  
    75     return 0;
    76 }

    Here are the errors that I cant seem to fix:

    Code :
    C:\Users\Colin\Documents\CompDev\C++\TextureTest\main.cpp||In function 'int main()':|
    C:\Users\Colin\Documents\CompDev\C++\TextureTest\main.cpp|45|error: expected type-specifier|
    C:\Users\Colin\Documents\CompDev\C++\TextureTest\main.cpp|45|error: expected unqualified-id before '&' token|
    C:\Users\Colin\Documents\CompDev\C++\TextureTest\main.cpp|45|error: expected ')' before '&' token|
    C:\Users\Colin\Documents\CompDev\C++\TextureTest\main.cpp|45|error: expected '{' before '&' token|
    C:\Users\Colin\Documents\CompDev\C++\TextureTest\main.cpp|45|error: 'e' was not declared in this scope|
    C:\Users\Colin\Documents\CompDev\C++\TextureTest\main.cpp|45|error: expected ';' before ')' token|
    ||=== Build finished: 6 errors, 0 warnings (0 minutes, 1 seconds) ===|

    I've tried commenting out the offending catch(), but the program always crashes before it can get to the main loop, and never due to failed image file loading.

  2. #2
    Senior Member OpenGL Guru
    Join Date
    May 2009
    Posts
    4,948
    It seems I forgot to have `glimg/TextureGenerator.h` #include `glimg/TextureGeneratorExceptions.h`. So you'll have to include that manually for the time being, until a new version with the fix comes out.

  3. #3
    Junior Member Newbie
    Join Date
    Apr 2013
    Posts
    18
    I included the header file, and the program now builds, but when I try to run it it crashes on line 63 where I call glMatrixMode(). The console returns this after closing the application:

    Code :
    Process returned -1073741819 (0xC0000005)   execution time : 4.285 s
    Press any key to continue.

    I changed lines 63 to 65 and added some stuff which doesn't seem to have fixed this issue. This is the revised version:

    Code :
            glMatrixMode(GL_PROJECTION);
            glLoadIdentity();
            glOrtho(0.0,width,height,0.0,-1.0,1.0);
            glMatrixMode(GL_MODELVIEW);
            glLoadIdentity();

  4. #4
    Junior Member Newbie
    Join Date
    Apr 2013
    Posts
    18
    *bump* Can someone help me with this?

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