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* Rewrite of R_LoadImage to make it more generic and data driven

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This commit is contained in:
Tim Angus 2007-08-26 21:27:46 +00:00
parent 6993861080
commit 034e6e8f20
6 changed files with 117 additions and 44 deletions
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111
code/renderer/tr_image.c
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@ -4376,6 +4376,27 @@ static void LoadPNG(const char *name, byte **pic, int *width, int *height)
//===================================================================
typedef struct
{
char *ext;
void (*ImageLoader)( const char *, unsigned char **, int *, int * );
} imageExtToLoaderMap_t;
// Note that the ordering indicates the order of preference used
// when there are multiple images of different formats available
static imageExtToLoaderMap_t imageLoaders[ ] =
{
{ "tga", LoadTGA },
{ "jpg", LoadJPG },
{ "jpeg", LoadJPG },
{ "png", LoadPNG },
{ "pcx", LoadPCX32 },
{ "bmp", LoadBMP }
};
static int numImageLoaders = sizeof( imageLoaders ) /
sizeof( imageLoaders[ 0 ] );
/*
=================
R_LoadImage
@ -4384,53 +4405,71 @@ Loads any of the supported image types into a cannonical
32 bit format.
=================
*/
void R_LoadImage( const char *name, byte **pic, int *width, int *height ) {
int len;
void R_LoadImage( const char *name, byte **pic, int *width, int *height )
{
qboolean orgNameFailed = qfalse;
int i;
char localName[ MAX_QPATH ];
const char *ext;
*pic = NULL;
*width = 0;
*height = 0;
len = strlen(name);
if (len<5) {
return;
}
Q_strncpyz( localName, name, MAX_QPATH );
if ( !Q_stricmp( name+len-4, ".tga" ) ) {
LoadTGA( name, pic, width, height );
ext = COM_GetExtension( localName );
// This is a hack to get around the fact that some
// baseq3 shaders refer to tga files where the images
// are actually jpgs
if (!*pic) {
// try jpg in place of tga
char altname[MAX_QPATH];
if( *ext )
{
// Look for the correct loader and use it
for( i = 0; i < numImageLoaders; i++ )
{
if( !Q_stricmp( ext, imageLoaders[ i ].ext ) )
{
// Load
imageLoaders[ i ].ImageLoader( localName, pic, width, height );
break;
}
}
strcpy( altname, name );
len = strlen( altname );
altname[len-3] = 'j';
altname[len-2] = 'p';
altname[len-1] = 'g';
ri.Printf( PRINT_DEVELOPER, "WARNING: %s failed, trying %s\n", name, altname );
LoadJPG( altname, pic, width, height );
// A loader was found
if( i < numImageLoaders )
{
if( *pic == NULL )
{
// Loader failed, most likely because the file isn't there;
// try again without the extension
orgNameFailed = qtrue;
COM_StripExtension( name, localName, MAX_QPATH );
}
else
{
// Something loaded
return;
}
}
}
else if ( !Q_stricmp(name+len-4, ".pcx") )
// Try and find a suitable match using all
// the image formats supported
for( i = 0; i < numImageLoaders; i++ )
{
LoadPCX32( name, pic, width, height );
}
else if ( !Q_stricmp( name+len-4, ".bmp" ) )
{
LoadBMP( name, pic, width, height );
}
else if ( !Q_stricmp( name+len-4, ".jpg" ) )
{
LoadJPG( name, pic, width, height );
}
else if ( !Q_stricmp( name+len-4, ".png" ) )
{
LoadPNG( name, pic, width, height );
char *altName = va( "%s.%s", localName, imageLoaders[ i ].ext );
// Load
imageLoaders[ i ].ImageLoader( altName, pic, width, height );
if( *pic )
{
if( orgNameFailed )
{
ri.Printf( PRINT_DEVELOPER, "WARNING: %s not present, using %s instead\n",
name, altName );
}
break;
}
}
}