diff options
Diffstat (limited to 'src/TGALoader.cpp')
-rw-r--r-- | src/TGALoader.cpp | 80 |
1 files changed, 0 insertions, 80 deletions
diff --git a/src/TGALoader.cpp b/src/TGALoader.cpp deleted file mode 100644 index 8862573..0000000 --- a/src/TGALoader.cpp +++ /dev/null @@ -1,80 +0,0 @@ -/**> HEADER FILES <**/ -#include "TGALoader.h" - -/********************> LoadTGA() <*****/ -TGAImageRec* LoadTGA( char *filename ) -{ - GLubyte TGAheader[12]={0,0,2,0,0,0,0,0,0,0,0,0}; // Uncompressed TGA Header - GLubyte TGAcompare[12]; // Used To Compare TGA Header - GLubyte header[6]; // First 6 Useful Bytes From The Header - GLuint bytesPerPixel; // Holds Number Of Bytes Per Pixel Used In The TGA File - GLuint imageSize; // Used To Store The Image Size When Setting Aside Ram - GLuint temp; // Temporary Variable - TGAImageRec *texture; - FILE *file; - - // Open The TGA File - file = cfh_fopen( filename, "rb" ); - - if( ( file == NULL ) || // Does File Even Exist? - ( fread( TGAcompare, 1, sizeof( TGAcompare ), file ) != sizeof( TGAcompare ) ) || // Are There 12 Bytes To Read? - ( memcmp( TGAheader, TGAcompare, sizeof( TGAheader ) ) != 0 ) || // Does The Header Match What We Want? - ( fread( header, 1, sizeof( header ), file ) != sizeof( header ) ) )// If So Read Next 6 Header Bytes - { - // If anything failed then close the file and return false - fclose( file ); - return NULL; - } - - // Create a new RGBAImageRec - texture = ( TGAImageRec* )malloc( sizeof( TGAImageRec ) ); - - // Determine the TGA width (highbyte*256+lowbyte) and height (highbyte*256+lowbyte) - texture->sizeX = header[1] * 256 + header[0]; - texture->sizeY = header[3] * 256 + header[2]; - - // Make sure the height, width, and bit depth are valid - if( ( texture->sizeX <= 0 ) || ( texture->sizeY <= 0 ) || ( ( header[4] != 24 ) && ( header[4] != 32 ) ) ) - { - // If anything failed then close the file, free up memory for the image, and return NULL - fclose( file ); - free( texture ); - return NULL; - } - - // Grab The TGA's Bits Per Pixel (24 or 32) - texture->bpp = header[4]; - bytesPerPixel = texture->bpp/8; // Divide By 8 To Get The Bytes Per Pixel - - // Calculate The Memory Required For The TGA Data - imageSize = texture->sizeX * texture->sizeY * bytesPerPixel; - - // Reserve Memory To Hold The TGA Data - texture->data = ( GLubyte* )malloc( imageSize ); - - // Make sure the right amount of memory was allocated - if( ( texture->data == NULL ) || ( fread( texture->data, 1, imageSize, file ) != imageSize ) ) - { - // Free up the image data if there was any - if( texture->data != NULL ) - free( texture->data ); - - // If anything failed then close the file, free up memory for the image, and return NULL - fclose( file ); - free( texture ); - return NULL; - } - - // Loop Through The Image Data - for (GLuint i = 0; i < imageSize; i += bytesPerPixel) { - // Swaps The 1st And 3rd Bytes ('R'ed and 'B'lue) - temp = texture->data[i]; // Temporarily Store The Value At Image Data 'i' - texture->data[i] = texture->data[i + 2]; // Set The 1st Byte To The Value Of The 3rd Byte - texture->data[i + 2] = temp; // Set The 3rd Byte To The Value In 'temp' (1st Byte Value) - } - - // Close The File - fclose( file ); - - return texture; -} |