Re: [Dev-C++] Strange compilation unit errors

[Scott S. <ssi...@sp...>]

Here it is:

TGALOADER.H

#ifndef TGALOADER_H
#define TGALOADER_H

#include <gl/gl.h>
#include <string>
using std::string;

class TGAImage
{
     public:
     bool LoadTGA( TGAImage* texture, string filename, GLuint texType );
     private:
     GLubyte* imageData_;
     GLuint bpp_;
     GLuint width_;
     GLuint height_;
     GLuint texID_;
};

#endif


TGALOADER.CPP

#include "tgaloader.h"
#include <gl/gl.h>
#include <string>
#include <cstdio>
using std::string;

TGAImage::LoadTGA( TGAImage* texture, string filename, GLuint texType )
{
     GLubyte tgaHeader[12] = { 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
     GLubyte imgHeader[12]; //The files header, to be compared with the 
above header
     GLubyte header[6]; //Width, height, and bpp info
     GLuint bpp;
     GLuint imageSize;
     GLuint swap;
     GLuint type = GL_RGBA;

     FILE* image = fopen( filename.c_str(), "rb" );

     if( NULL == image ||
     	fread( imgHeader, 1, sizeof(imgHeader), image ) != 
sizeof(imgHeader) ||
     	memcmp( tgaHeader, imgHeader, sizeof(tgaHeader) ) != 0 ||
     	fread( header, 1, sizeof(header), image ) != sizeof(header) )
    	{
    	    if( NULL == image )
    	    {
    	        return false;
    	    }
         else
         {
             fclose( image );
             return false;
         }
     }

     texture->width_ = header[1] * 256 + header[0];
     texture->height_ = header[3] * 256 + header[2];

     if( texture->width_ <= 0 ||
     	texture->height <= 0 ||
     	( header[4] != 24 && header[4] != 32 ) )
    	{
    	    fclose( image );
    	    return false;
    	}

     texture->bpp_ = header[4];
     bpp = texture->bpp_ / 8; //Get the bytes per pixel from the bits 
per pixel
     imageSize = texture->width_ * texture->height_ * bpp;
     texture->imageData_ = (GLubyte*)malloc( imageSize );

     if( NULL == texture->imageData_  ||
     	fread( texture->imageData_, 1, imageSize, image ) != imageSize )
    	{
    	    if( texture->imageData_ != NULL )
    	    {
    	        free( texture->imageData_ );
    	    }
         fclose( image );
         return false;
     }

     for( int i = 0; i < int(imageSize); i+= bpp )
     {
         swap = texture->imageData_[i];
         texture->imageData_[i] = texture->imageData_[i + 2];
         texture->imageData_[i + 2] = swap;
     }
     fclose( image );

     glGenTextures( 1, &texture[0]->texID_ );
     glBindTexture( GL_TEXTURE_2D, &texture[0]->texID_ );

     if( 0 == texType )
     {
         glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, 
GL_NEAREST );
         glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, 
GL_NEAREST );
     }
     if( 1 == texType )
     {
         glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
         glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
     }


     if( 24 == texture[0].bpp_ )
     {
         type = GL_RGB;
     }

     glTexImage2D( GL_TEXTURE_2D, 0, type, texture[0].width_, 
texture[0]->height_, 0, GL_UNSIGNED_BYTE, texture[0]->imageData_ );

     return true;
}

--Scott Simontis--

Per Westermark wrote:
> It is nice that you have posted your error messages. However, since we
> can't see your code, we can't say what you are doing wrong.
> 
> /Per W
> 
> On Mon, 1 Nov 2004, Scott Simontis wrote:
> 
> 
>>I am working on a TGA file loader for OpenGL. I keep getting lots of
>>errors. It looks like the header file for the TGA loader isn't being
>>seen, so the definition cannot be found. Does anyone know why it isn't
>>working? Its about 130 lines of code or so, and is at
>>http://home.comcast.net/~ageofscott/tgacode.zip
>>compilation errors are below:
>>
>>
>>Compiler: Default compiler
>>Building Makefile: "C:\Code\scifair\Makefile.win"
>>Executing  make...
>>mingw32-make.exe -f "C:\Code\scifair\Makefile.win" all
>>g++.exe -c tgaloader.cpp -o tgaloader.o -I"C:/Dev-Cpp/include/c++/3.3.1"
>>  -I"C:/Dev-Cpp/include/c++/3.3.1/mingw32"
>>-I"C:/Dev-Cpp/include/c++/3.3.1/backward"
>>-I"C:/Dev-Cpp/lib/gcc-lib/mingw32/3.3.1/include"  -I"C:/Dev-Cpp/include"
>>  -I"C:/Dev-Cpp/include/GL"  -I"C:/Dev-Cpp/include/SDL"
>>-I"C:/Dev-Cpp/include/allegro"  -I"C:/Dev-Cpp/allegro/include"
>>-I"C:/wx/include"  -I"C:/Code"
>>
>>tgaloader.cpp:29: error: ISO C++ forbids declaration of `LoadTGA' with
>>no type
>>
>>tgaloader.cpp:29: error: prototype for `int TGAImage::LoadTGA(TGAImage*,
>>std::string, GLuint)' does not match any in class `TGAImage'
>>tgaloader.h:18: error: candidate is: bool TGAImage::LoadTGA(TGAImage*,
>>std::string, GLuint)
>>tgaloader.cpp:29: error: `int TGAImage::LoadTGA(TGAImage*, std::string,
>>GLuint)' and `bool TGAImage::LoadTGA(TGAImage*, std::string, GLuint)'
>>cannot be overloaded
>>
>>tgaloader.cpp: In member function `int TGAImage::LoadTGA(TGAImage*,
>>std::string, GLuint)':
>>tgaloader.cpp:60: error: 'class TGAImage' has no member named 'height'
>>tgaloader.cpp:91: error: base operand of `->' has non-pointer type
>>`TGAImage'
>>tgaloader.cpp:92: error: base operand of `->' has non-pointer type
>>`TGAImage'
>>tgaloader.cpp:111: error: base operand of `->' has non-pointer type
>>`TGAImage'
>>tgaloader.cpp:111: error: base operand of `->' has non-pointer type
>>`TGAImage'
>>
>>mingw32-make.exe: *** [tgaloader.o] Error 1
>>
>>Execution terminated
>>
>>Thanks in advanced for any help.
>>--
>>--Scott Simontis--
>>
>>
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> 
> 
>