Move some things into renderercommon

6 files changed, 3753 insertions, 0 deletions

diff --git a/src/renderercommon/tr_image_bmp.c b/src/renderercommon/tr_image_bmp.c
new file mode 100644
index 00000000..f9314015
--- /dev/null
+++ b/src/renderercommon/tr_image_bmp.c
@@ -0,0 +1,240 @@
+/*
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+Copyright (C) 2000-2009 Darklegion Development
+
+This file is part of Tremulous.
+
+Tremulous is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Tremulous is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Tremulous; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+#include "../renderergl1/tr_local.h"
+
+typedef struct
+{
+	char id[2];
+	unsigned fileSize;
+	unsigned reserved0;
+	unsigned bitmapDataOffset;
+	unsigned bitmapHeaderSize;
+	unsigned width;
+	unsigned height;
+	unsigned short planes;
+	unsigned short bitsPerPixel;
+	unsigned compression;
+	unsigned bitmapDataSize;
+	unsigned hRes;
+	unsigned vRes;
+	unsigned colors;
+	unsigned importantColors;
+	unsigned char palette[256][4];
+} BMPHeader_t;
+
+void R_LoadBMP( const char *name, byte **pic, int *width, int *height )
+{
+	int		columns, rows;
+	unsigned	numPixels;
+	byte	*pixbuf;
+	int		row, column;
+	byte	*buf_p;
+	byte	*end;
+	union {
+		byte *b;
+		void *v;
+	} buffer;
+	int		length;
+	BMPHeader_t bmpHeader;
+	byte		*bmpRGBA;
+
+	*pic = NULL;
+
+	if(width)
+		*width = 0;
+
+	if(height)
+		*height = 0;
+
+	//
+	// load the file
+	//
+	length = ri.FS_ReadFile( ( char * ) name, &buffer.v);
+	if (!buffer.b || length < 0) {
+		return;
+	}
+
+	if (length < 54)
+	{
+		ri.Error( ERR_DROP, "LoadBMP: header too short (%s)", name );
+	}
+
+	buf_p = buffer.b;
+	end = buffer.b + length;
+
+	bmpHeader.id[0] = *buf_p++;
+	bmpHeader.id[1] = *buf_p++;
+	bmpHeader.fileSize = LittleLong( * ( int * ) buf_p );
+	buf_p += 4;
+	bmpHeader.reserved0 = LittleLong( * ( int * ) buf_p );
+	buf_p += 4;
+	bmpHeader.bitmapDataOffset = LittleLong( * ( int * ) buf_p );
+	buf_p += 4;
+	bmpHeader.bitmapHeaderSize = LittleLong( * ( int * ) buf_p );
+	buf_p += 4;
+	bmpHeader.width = LittleLong( * ( int * ) buf_p );
+	buf_p += 4;
+	bmpHeader.height = LittleLong( * ( int * ) buf_p );
+	buf_p += 4;
+	bmpHeader.planes = LittleShort( * ( short * ) buf_p );
+	buf_p += 2;
+	bmpHeader.bitsPerPixel = LittleShort( * ( short * ) buf_p );
+	buf_p += 2;
+	bmpHeader.compression = LittleLong( * ( int * ) buf_p );
+	buf_p += 4;
+	bmpHeader.bitmapDataSize = LittleLong( * ( int * ) buf_p );
+	buf_p += 4;
+	bmpHeader.hRes = LittleLong( * ( int * ) buf_p );
+	buf_p += 4;
+	bmpHeader.vRes = LittleLong( * ( int * ) buf_p );
+	buf_p += 4;
+	bmpHeader.colors = LittleLong( * ( int * ) buf_p );
+	buf_p += 4;
+	bmpHeader.importantColors = LittleLong( * ( int * ) buf_p );
+	buf_p += 4;
+
+	if ( bmpHeader.bitsPerPixel == 8 )
+	{
+		if (buf_p + sizeof(bmpHeader.palette) > end)
+			ri.Error( ERR_DROP, "LoadBMP: header too short (%s)", name );
+
+		Com_Memcpy( bmpHeader.palette, buf_p, sizeof( bmpHeader.palette ) );
+		buf_p += sizeof(bmpHeader.palette);
+	}
+
+	if (buffer.b + bmpHeader.bitmapDataOffset > end)
+	{
+		ri.Error( ERR_DROP, "LoadBMP: invalid offset value in header (%s)", name );
+	}
+
+	buf_p = buffer.b + bmpHeader.bitmapDataOffset;
+
+	if ( bmpHeader.id[0] != 'B' && bmpHeader.id[1] != 'M' ) 
+	{
+		ri.Error( ERR_DROP, "LoadBMP: only Windows-style BMP files supported (%s)", name );
+	}
+	if ( bmpHeader.fileSize != length )
+	{
+		ri.Error( ERR_DROP, "LoadBMP: header size does not match file size (%u vs. %u) (%s)", bmpHeader.fileSize, length, name );
+	}
+	if ( bmpHeader.compression != 0 )
+	{
+		ri.Error( ERR_DROP, "LoadBMP: only uncompressed BMP files supported (%s)", name );
+	}
+	if ( bmpHeader.bitsPerPixel < 8 )
+	{
+		ri.Error( ERR_DROP, "LoadBMP: monochrome and 4-bit BMP files not supported (%s)", name );
+	}
+
+	switch ( bmpHeader.bitsPerPixel )
+	{
+		case 8:
+		case 16:
+		case 24:
+		case 32:
+			break;
+		default:
+			ri.Error( ERR_DROP, "LoadBMP: illegal pixel_size '%hu' in file '%s'", bmpHeader.bitsPerPixel, name );
+			break;
+	}
+
+	columns = bmpHeader.width;
+	rows = bmpHeader.height;
+	if ( rows < 0 )
+		rows = -rows;
+	numPixels = columns * rows;
+
+	if(columns <= 0 || !rows || numPixels > 0x1FFFFFFF // 4*1FFFFFFF == 0x7FFFFFFC < 0x7FFFFFFF
+	    || ((numPixels * 4) / columns) / 4 != rows)
+	{
+	  ri.Error (ERR_DROP, "LoadBMP: %s has an invalid image size", name);
+	}
+	if(buf_p + numPixels*bmpHeader.bitsPerPixel/8 > end)
+	{
+	  ri.Error (ERR_DROP, "LoadBMP: file truncated (%s)", name);
+	}
+
+	if ( width ) 
+		*width = columns;
+	if ( height )
+		*height = rows;
+
+	bmpRGBA = ri.Malloc( numPixels * 4 );
+	*pic = bmpRGBA;
+
+
+	for ( row = rows-1; row >= 0; row-- )
+	{
+		pixbuf = bmpRGBA + row*columns*4;
+
+		for ( column = 0; column < columns; column++ )
+		{
+			unsigned char red, green, blue, alpha;
+			int palIndex;
+			unsigned short shortPixel;
+
+			switch ( bmpHeader.bitsPerPixel )
+			{
+			case 8:
+				palIndex = *buf_p++;
+				*pixbuf++ = bmpHeader.palette[palIndex][2];
+				*pixbuf++ = bmpHeader.palette[palIndex][1];
+				*pixbuf++ = bmpHeader.palette[palIndex][0];
+				*pixbuf++ = 0xff;
+				break;
+			case 16:
+				shortPixel = * ( unsigned short * ) pixbuf;
+				pixbuf += 2;
+				*pixbuf++ = ( shortPixel & ( 31 << 10 ) ) >> 7;
+				*pixbuf++ = ( shortPixel & ( 31 << 5 ) ) >> 2;
+				*pixbuf++ = ( shortPixel & ( 31 ) ) << 3;
+				*pixbuf++ = 0xff;
+				break;
+
+			case 24:
+				blue = *buf_p++;
+				green = *buf_p++;
+				red = *buf_p++;
+				*pixbuf++ = red;
+				*pixbuf++ = green;
+				*pixbuf++ = blue;
+				*pixbuf++ = 255;
+				break;
+			case 32:
+				blue = *buf_p++;
+				green = *buf_p++;
+				red = *buf_p++;
+				alpha = *buf_p++;
+				*pixbuf++ = red;
+				*pixbuf++ = green;
+				*pixbuf++ = blue;
+				*pixbuf++ = alpha;
+				break;
+			}
+		}
+	}
+
+	ri.FS_FreeFile( buffer.v );
+
+}
diff --git a/src/renderercommon/tr_image_jpg.c b/src/renderercommon/tr_image_jpg.c
new file mode 100644
index 00000000..ae4a0ba3
--- /dev/null
+++ b/src/renderercommon/tr_image_jpg.c
@@ -0,0 +1,438 @@
+/*
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+Copyright (C) 2000-2009 Darklegion Development
+
+This file is part of Tremulous.
+
+Tremulous is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Tremulous is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Tremulous; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+#include "../renderergl1/tr_local.h"
+
+/*
+ * Include file for users of JPEG library.
+ * You will need to have included system headers that define at least
+ * the typedefs FILE and size_t before you can include jpeglib.h.
+ * (stdio.h is sufficient on ANSI-conforming systems.)
+ * You may also wish to include "jerror.h".
+ */
+
+#ifdef USE_INTERNAL_JPEG
+#  define JPEG_INTERNALS
+#endif
+
+#include <jpeglib.h>
+
+#ifndef USE_INTERNAL_JPEG
+#  if JPEG_LIB_VERSION < 80
+#    error Need system libjpeg >= 80
+#  endif
+#endif
+
+static void R_JPGErrorExit(j_common_ptr cinfo)
+{
+  char buffer[JMSG_LENGTH_MAX];
+  
+  (*cinfo->err->format_message) (cinfo, buffer);
+  
+  /* Let the memory manager delete any temp files before we die */
+  jpeg_destroy(cinfo);
+  
+  ri.Error(ERR_FATAL, "%s", buffer);
+}
+
+static void R_JPGOutputMessage(j_common_ptr cinfo)
+{
+  char buffer[JMSG_LENGTH_MAX];
+  
+  /* Create the message */
+  (*cinfo->err->format_message) (cinfo, buffer);
+  
+  /* Send it to stderr, adding a newline */
+  ri.Printf(PRINT_ALL, "%s\n", buffer);
+}
+
+void R_LoadJPG(const char *filename, unsigned char **pic, int *width, int *height)
+{
+  /* This struct contains the JPEG decompression parameters and pointers to
+   * working space (which is allocated as needed by the JPEG library).
+   */
+  struct jpeg_decompress_struct cinfo = {NULL};
+  /* We use our private extension JPEG error handler.
+   * Note that this struct must live as long as the main JPEG parameter
+   * struct, to avoid dangling-pointer problems.
+   */
+  /* This struct represents a JPEG error handler.  It is declared separately
+   * because applications often want to supply a specialized error handler
+   * (see the second half of this file for an example).  But here we just
+   * take the easy way out and use the standard error handler, which will
+   * print a message on stderr and call exit() if compression fails.
+   * Note that this struct must live as long as the main JPEG parameter
+   * struct, to avoid dangling-pointer problems.
+   */
+  struct jpeg_error_mgr jerr;
+  /* More stuff */
+  JSAMPARRAY buffer;		/* Output row buffer */
+  unsigned int row_stride;	/* physical row width in output buffer */
+  unsigned int pixelcount, memcount;
+  unsigned int sindex, dindex;
+  byte *out;
+  int len;
+	union {
+		byte *b;
+		void *v;
+	} fbuffer;
+  byte  *buf;
+
+  /* In this example we want to open the input file before doing anything else,
+   * so that the setjmp() error recovery below can assume the file is open.
+   * VERY IMPORTANT: use "b" option to fopen() if you are on a machine that
+   * requires it in order to read binary files.
+   */
+
+  len = ri.FS_ReadFile ( ( char * ) filename, &fbuffer.v);
+  if (!fbuffer.b || len < 0) {
+	return;
+  }
+
+  /* Step 1: allocate and initialize JPEG decompression object */
+
+  /* We have to set up the error handler first, in case the initialization
+   * step fails.  (Unlikely, but it could happen if you are out of memory.)
+   * This routine fills in the contents of struct jerr, and returns jerr's
+   * address which we place into the link field in cinfo.
+   */
+  cinfo.err = jpeg_std_error(&jerr);
+  cinfo.err->error_exit = R_JPGErrorExit;
+  cinfo.err->output_message = R_JPGOutputMessage;
+
+  /* Now we can initialize the JPEG decompression object. */
+  jpeg_create_decompress(&cinfo);
+
+  /* Step 2: specify data source (eg, a file) */
+
+  jpeg_mem_src(&cinfo, fbuffer.b, len);
+
+  /* Step 3: read file parameters with jpeg_read_header() */
+
+  (void) jpeg_read_header(&cinfo, TRUE);
+  /* We can ignore the return value from jpeg_read_header since
+   *   (a) suspension is not possible with the stdio data source, and
+   *   (b) we passed TRUE to reject a tables-only JPEG file as an error.
+   * See libjpeg.doc for more info.
+   */
+
+  /* Step 4: set parameters for decompression */
+
+  /*
+   * Make sure it always converts images to RGB color space. This will
+   * automatically convert 8-bit greyscale images to RGB as well.
+   */
+  cinfo.out_color_space = JCS_RGB;
+
+  /* Step 5: Start decompressor */
+
+  (void) jpeg_start_decompress(&cinfo);
+  /* We can ignore the return value since suspension is not possible
+   * with the stdio data source.
+   */
+
+  /* We may need to do some setup of our own at this point before reading
+   * the data.  After jpeg_start_decompress() we have the correct scaled
+   * output image dimensions available, as well as the output colormap
+   * if we asked for color quantization.
+   * In this example, we need to make an output work buffer of the right size.
+   */ 
+  /* JSAMPLEs per row in output buffer */
+
+  pixelcount = cinfo.output_width * cinfo.output_height;
+
+  if(!cinfo.output_width || !cinfo.output_height
+      || ((pixelcount * 4) / cinfo.output_width) / 4 != cinfo.output_height
+      || pixelcount > 0x1FFFFFFF || cinfo.output_components != 3
+    )
+  {
+    // Free the memory to make sure we don't leak memory
+    ri.FS_FreeFile (fbuffer.v);
+    jpeg_destroy_decompress(&cinfo);
+  
+    ri.Error(ERR_DROP, "LoadJPG: %s has an invalid image format: %dx%d*4=%d, components: %d", filename,
+		    cinfo.output_width, cinfo.output_height, pixelcount * 4, cinfo.output_components);
+  }
+
+  memcount = pixelcount * 4;
+  row_stride = cinfo.output_width * cinfo.output_components;
+
+  out = ri.Malloc(memcount);
+
+  *width = cinfo.output_width;
+  *height = cinfo.output_height;
+
+  /* Step 6: while (scan lines remain to be read) */
+  /*           jpeg_read_scanlines(...); */
+
+  /* Here we use the library's state variable cinfo.output_scanline as the
+   * loop counter, so that we don't have to keep track ourselves.
+   */
+  while (cinfo.output_scanline < cinfo.output_height) {
+    /* jpeg_read_scanlines expects an array of pointers to scanlines.
+     * Here the array is only one element long, but you could ask for
+     * more than one scanline at a time if that's more convenient.
+     */
+	buf = ((out+(row_stride*cinfo.output_scanline)));
+	buffer = &buf;
+    (void) jpeg_read_scanlines(&cinfo, buffer, 1);
+  }
+  
+  buf = out;
+
+  // Expand from RGB to RGBA
+  sindex = pixelcount * cinfo.output_components;
+  dindex = memcount;
+
+  do
+  {	
+    buf[--dindex] = 255;
+    buf[--dindex] = buf[--sindex];
+    buf[--dindex] = buf[--sindex];
+    buf[--dindex] = buf[--sindex];
+  } while(sindex);
+
+  *pic = out;
+
+  /* Step 7: Finish decompression */
+
+  jpeg_finish_decompress(&cinfo);
+  /* We can ignore the return value since suspension is not possible
+   * with the stdio data source.
+   */
+
+  /* Step 8: Release JPEG decompression object */
+
+  /* This is an important step since it will release a good deal of memory. */
+  jpeg_destroy_decompress(&cinfo);
+
+  /* After finish_decompress, we can close the input file.
+   * Here we postpone it until after no more JPEG errors are possible,
+   * so as to simplify the setjmp error logic above.  (Actually, I don't
+   * think that jpeg_destroy can do an error exit, but why assume anything...)
+   */
+  ri.FS_FreeFile (fbuffer.v);
+
+  /* At this point you may want to check to see whether any corrupt-data
+   * warnings occurred (test whether jerr.pub.num_warnings is nonzero).
+   */
+
+  /* And we're done! */
+}
+
+
+/* Expanded data destination object for stdio output */
+
+typedef struct {
+  struct jpeg_destination_mgr pub; /* public fields */
+
+  byte* outfile;		/* target stream */
+  int	size;
+} my_destination_mgr;
+
+typedef my_destination_mgr * my_dest_ptr;
+
+
+/*
+ * Initialize destination --- called by jpeg_start_compress
+ * before any data is actually written.
+ */
+
+static void
+init_destination (j_compress_ptr cinfo)
+{
+  my_dest_ptr dest = (my_dest_ptr) cinfo->dest;
+
+  dest->pub.next_output_byte = dest->outfile;
+  dest->pub.free_in_buffer = dest->size;
+}
+
+
+/*
+ * Empty the output buffer --- called whenever buffer fills up.
+ *
+ * In typical applications, this should write the entire output buffer
+ * (ignoring the current state of next_output_byte & free_in_buffer),
+ * reset the pointer & count to the start of the buffer, and return TRUE
+ * indicating that the buffer has been dumped.
+ *
+ * In applications that need to be able to suspend compression due to output
+ * overrun, a FALSE return indicates that the buffer cannot be emptied now.
+ * In this situation, the compressor will return to its caller (possibly with
+ * an indication that it has not accepted all the supplied scanlines).  The
+ * application should resume compression after it has made more room in the
+ * output buffer.  Note that there are substantial restrictions on the use of
+ * suspension --- see the documentation.
+ *
+ * When suspending, the compressor will back up to a convenient restart point
+ * (typically the start of the current MCU). next_output_byte & free_in_buffer
+ * indicate where the restart point will be if the current call returns FALSE.
+ * Data beyond this point will be regenerated after resumption, so do not
+ * write it out when emptying the buffer externally.
+ */
+
+static boolean
+empty_output_buffer (j_compress_ptr cinfo)
+{
+  my_dest_ptr dest = (my_dest_ptr) cinfo->dest;
+  
+  jpeg_destroy_compress(cinfo);
+  
+  // Make crash fatal or we would probably leak memory.
+  ri.Error(ERR_FATAL, "Output buffer for encoded JPEG image has insufficient size of %d bytes",
+           dest->size);
+
+  return FALSE;
+}
+
+/*
+ * Terminate destination --- called by jpeg_finish_compress
+ * after all data has been written.  Usually needs to flush buffer.
+ *
+ * NB: *not* called by jpeg_abort or jpeg_destroy; surrounding
+ * application must deal with any cleanup that should happen even
+ * for error exit.
+ */
+
+static void term_destination(j_compress_ptr cinfo)
+{
+}
+
+
+/*
+ * Prepare for output to a stdio stream.
+ * The caller must have already opened the stream, and is responsible
+ * for closing it after finishing compression.
+ */
+
+static void
+jpegDest (j_compress_ptr cinfo, byte* outfile, int size)
+{
+  my_dest_ptr dest;
+
+  /* The destination object is made permanent so that multiple JPEG images
+   * can be written to the same file without re-executing jpeg_stdio_dest.
+   * This makes it dangerous to use this manager and a different destination
+   * manager serially with the same JPEG object, because their private object
+   * sizes may be different.  Caveat programmer.
+   */
+  if (cinfo->dest == NULL) {	/* first time for this JPEG object? */
+    cinfo->dest = (struct jpeg_destination_mgr *)
+      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
+				  sizeof(my_destination_mgr));
+  }
+
+  dest = (my_dest_ptr) cinfo->dest;
+  dest->pub.init_destination = init_destination;
+  dest->pub.empty_output_buffer = empty_output_buffer;
+  dest->pub.term_destination = term_destination;
+  dest->outfile = outfile;
+  dest->size = size;
+}
+
+/*
+=================
+SaveJPGToBuffer
+
+Encodes JPEG from image in image_buffer and writes to buffer.
+Expects RGB input data
+=================
+*/
+size_t RE_SaveJPGToBuffer(byte *buffer, size_t bufSize, int quality,
+    int image_width, int image_height, byte *image_buffer, int padding)
+{
+  struct jpeg_compress_struct cinfo;
+  struct jpeg_error_mgr jerr;
+  JSAMPROW row_pointer[1];	/* pointer to JSAMPLE row[s] */
+  my_dest_ptr dest;
+  int row_stride;		/* physical row width in image buffer */
+  size_t outcount;
+
+  /* Step 1: allocate and initialize JPEG compression object */
+  cinfo.err = jpeg_std_error(&jerr);
+  cinfo.err->error_exit = R_JPGErrorExit;
+  cinfo.err->output_message = R_JPGOutputMessage;
+
+  /* Now we can initialize the JPEG compression object. */
+  jpeg_create_compress(&cinfo);
+
+  /* Step 2: specify data destination (eg, a file) */
+  /* Note: steps 2 and 3 can be done in either order. */
+  jpegDest(&cinfo, buffer, bufSize);
+
+  /* Step 3: set parameters for compression */
+  cinfo.image_width = image_width; 	/* image width and height, in pixels */
+  cinfo.image_height = image_height;
+  cinfo.input_components = 3;		/* # of color components per pixel */
+  cinfo.in_color_space = JCS_RGB; 	/* colorspace of input image */
+
+  jpeg_set_defaults(&cinfo);
+  jpeg_set_quality(&cinfo, quality, TRUE /* limit to baseline-JPEG values */);
+  /* If quality is set high, disable chroma subsampling */
+  if (quality >= 85) {
+    cinfo.comp_info[0].h_samp_factor = 1;
+    cinfo.comp_info[0].v_samp_factor = 1;
+  }
+
+  /* Step 4: Start compressor */
+  jpeg_start_compress(&cinfo, TRUE);
+
+  /* Step 5: while (scan lines remain to be written) */
+  /*           jpeg_write_scanlines(...); */
+  row_stride = image_width * cinfo.input_components + padding; /* JSAMPLEs per row in image_buffer */
+  
+  while (cinfo.next_scanline < cinfo.image_height) {
+    /* jpeg_write_scanlines expects an array of pointers to scanlines.
+     * Here the array is only one element long, but you could pass
+     * more than one scanline at a time if that's more convenient.
+     */
+    row_pointer[0] = &image_buffer[((cinfo.image_height-1)*row_stride)-cinfo.next_scanline * row_stride];
+    (void) jpeg_write_scanlines(&cinfo, row_pointer, 1);
+  }
+
+  /* Step 6: Finish compression */
+  jpeg_finish_compress(&cinfo);
+  
+  dest = (my_dest_ptr) cinfo.dest;
+  outcount = dest->size - dest->pub.free_in_buffer;
+ 
+  /* Step 7: release JPEG compression object */
+  jpeg_destroy_compress(&cinfo);
+
+  /* And we're done! */
+  return outcount;
+}
+
+void RE_SaveJPG(char * filename, int quality, int image_width, int image_height, byte *image_buffer, int padding)
+{
+  byte *out;
+  size_t bufSize;
+
+  bufSize = image_width * image_height * 3;
+  out = ri.Hunk_AllocateTempMemory(bufSize);
+
+  bufSize = RE_SaveJPGToBuffer(out, bufSize, quality, image_width, image_height, image_buffer, padding);
+  ri.FS_WriteFile(filename, out, bufSize);
+
+  ri.Hunk_FreeTempMemory(out);
+}
diff --git a/src/renderercommon/tr_image_pcx.c b/src/renderercommon/tr_image_pcx.c
new file mode 100644
index 00000000..198af7ed
--- /dev/null
+++ b/src/renderercommon/tr_image_pcx.c
@@ -0,0 +1,176 @@
+/*
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+              2008 Ludwig Nussel
+Copyright (C) 2000-2009 Darklegion Development
+
+This file is part of Tremulous.
+
+Tremulous is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Tremulous is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Tremulous; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+#include "../renderergl1/tr_local.h"
+
+/*
+========================================================================
+
+PCX files are used for 8 bit images
+
+========================================================================
+*/
+
+typedef struct {
+	char	manufacturer;
+	char	version;
+	char	encoding;
+	char	bits_per_pixel;
+	unsigned short	xmin,ymin,xmax,ymax;
+	unsigned short	hres,vres;
+	unsigned char	palette[48];
+	char	reserved;
+	char	color_planes;
+	unsigned short	bytes_per_line;
+	unsigned short	palette_type;
+	unsigned short	hscreensize, vscreensize;
+	char	filler[54];
+	unsigned char	data[];
+} pcx_t;
+
+void R_LoadPCX ( const char *filename, byte **pic, int *width, int *height)
+{
+	union {
+		byte *b;
+		void *v;
+	} raw;
+	byte	*end;
+	pcx_t	*pcx;
+	int		len;
+	unsigned char	dataByte = 0, runLength = 0;
+	byte	*out, *pix;
+	unsigned short w, h;
+	byte	*pic8;
+	byte	*palette;
+	int	i;
+	unsigned size = 0;
+
+	if (width)
+		*width = 0;
+	if (height)
+		*height = 0;
+	*pic = NULL;
+
+	//
+	// load the file
+	//
+	len = ri.FS_ReadFile( ( char * ) filename, &raw.v);
+	if (!raw.b || len < 0) {
+		return;
+	}
+
+	if((unsigned)len < sizeof(pcx_t))
+	{
+		ri.Printf (PRINT_ALL, "PCX truncated: %s\n", filename);
+		ri.FS_FreeFile (raw.v);
+		return;
+	}
+
+	//
+	// parse the PCX file
+	//
+	pcx = (pcx_t *)raw.b;
+	end = raw.b+len;
+
+	w = LittleShort(pcx->xmax)+1;
+	h = LittleShort(pcx->ymax)+1;
+	size = w*h;
+
+	if (pcx->manufacturer != 0x0a
+		|| pcx->version != 5
+		|| pcx->encoding != 1
+		|| pcx->color_planes != 1
+		|| pcx->bits_per_pixel != 8
+		|| w >= 1024
+		|| h >= 1024)
+	{
+		ri.Printf (PRINT_ALL, "Bad or unsupported pcx file %s (%dx%d@%d)\n", filename, w, h, pcx->bits_per_pixel);
+		return;
+	}
+
+	pix = pic8 = ri.Malloc ( size );
+
+	raw.b = pcx->data;
+	// FIXME: should use bytes_per_line but original q3 didn't do that either
+	while(pix < pic8+size)
+	{
+		if(runLength > 0) {
+			*pix++ = dataByte;
+			--runLength;
+			continue;
+		}
+
+		if(raw.b+1 > end)
+			break;
+		dataByte = *raw.b++;
+
+		if((dataByte & 0xC0) == 0xC0)
+		{
+			if(raw.b+1 > end)
+				break;
+			runLength = dataByte & 0x3F;
+			dataByte = *raw.b++;
+		}
+		else
+			runLength = 1;
+	}
+
+	if(pix < pic8+size)
+	{
+		ri.Printf (PRINT_ALL, "PCX file truncated: %s\n", filename);
+		ri.FS_FreeFile (pcx);
+		ri.Free (pic8);
+	}
+
+	if (raw.b-(byte*)pcx >= end - (byte*)769 || end[-769] != 0x0c)
+	{
+		ri.Printf (PRINT_ALL, "PCX missing palette: %s\n", filename);
+		ri.FS_FreeFile (pcx);
+		ri.Free (pic8);
+		return;
+	}
+
+	palette = end-768;
+
+	pix = out = ri.Malloc(4 * size );
+	for (i = 0 ; i < size ; i++)
+	{
+		unsigned char p = pic8[i];
+		pix[0] = palette[p*3];
+		pix[1] = palette[p*3 + 1];
+		pix[2] = palette[p*3 + 2];
+		pix[3] = 255;
+		pix += 4;
+	}
+
+	if (width)
+		*width = w;
+	if (height)
+		*height = h;
+
+	*pic = out;
+
+	ri.FS_FreeFile (pcx);
+	ri.Free (pic8);
+}
diff --git a/src/renderercommon/tr_image_png.c b/src/renderercommon/tr_image_png.c
new file mode 100644
index 00000000..48b65a83
--- /dev/null
+++ b/src/renderercommon/tr_image_png.c
@@ -0,0 +1,2486 @@
+/*
+===========================================================================
+ioquake3 png decoder
+Copyright (C) 2007,2008 Joerg Dietrich
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+===========================================================================
+*/
+
+#include "../renderergl1/tr_local.h"
+
+#include "../qcommon/puff.h"
+
+// we could limit the png size to a lower value here
+#ifndef INT_MAX
+#define INT_MAX 0x1fffffff
+#endif
+
+/*
+=================
+PNG LOADING
+=================
+*/
+
+/*
+ *  Quake 3 image format : RGBA
+ */
+
+#define Q3IMAGE_BYTESPERPIXEL (4)
+
+/*
+ *  PNG specifications
+ */
+
+/*
+ *  The first 8 Bytes of every PNG-File are a fixed signature
+ *  to identify the file as a PNG.
+ */
+
+#define PNG_Signature "\x89\x50\x4E\x47\xD\xA\x1A\xA"
+#define PNG_Signature_Size (8)
+
+/*
+ *  After the signature diverse chunks follow.
+ *  A chunk consists of a header and if Length
+ *  is bigger than 0 a body and a CRC of the body follow.
+ */
+
+struct PNG_ChunkHeader
+{
+	uint32_t Length;
+	uint32_t Type;
+};
+
+#define PNG_ChunkHeader_Size (8)
+
+typedef uint32_t PNG_ChunkCRC;
+
+#define PNG_ChunkCRC_Size (4)
+
+/*
+ *  We use the following ChunkTypes.
+ *  All others are ignored.
+ */
+
+#define MAKE_CHUNKTYPE(a,b,c,d) (((a) << 24) | ((b) << 16) | ((c) << 8) | ((d)))
+
+#define PNG_ChunkType_IHDR MAKE_CHUNKTYPE('I', 'H', 'D', 'R')
+#define PNG_ChunkType_PLTE MAKE_CHUNKTYPE('P', 'L', 'T', 'E')
+#define PNG_ChunkType_IDAT MAKE_CHUNKTYPE('I', 'D', 'A', 'T')
+#define PNG_ChunkType_IEND MAKE_CHUNKTYPE('I', 'E', 'N', 'D')
+#define PNG_ChunkType_tRNS MAKE_CHUNKTYPE('t', 'R', 'N', 'S')
+
+/*
+ *  Per specification the first chunk after the signature SHALL be IHDR.
+ */
+
+struct PNG_Chunk_IHDR
+{
+	uint32_t Width;
+	uint32_t Height;
+	uint8_t  BitDepth;
+	uint8_t  ColourType;
+	uint8_t  CompressionMethod;
+	uint8_t  FilterMethod;
+	uint8_t  InterlaceMethod;
+};
+
+#define PNG_Chunk_IHDR_Size (13)
+
+/*
+ *  ColourTypes
+ */
+
+#define PNG_ColourType_Grey      (0)
+#define PNG_ColourType_True      (2)
+#define PNG_ColourType_Indexed   (3)
+#define PNG_ColourType_GreyAlpha (4)
+#define PNG_ColourType_TrueAlpha (6)
+
+/*
+ *  number of colour components
+ *
+ *  Grey      : 1 grey
+ *  True      : 1 R, 1 G, 1 B
+ *  Indexed   : 1 index
+ *  GreyAlpha : 1 grey, 1 alpha
+ *  TrueAlpha : 1 R, 1 G, 1 B, 1 alpha
+ */
+
+#define PNG_NumColourComponents_Grey      (1)
+#define PNG_NumColourComponents_True      (3)
+#define PNG_NumColourComponents_Indexed   (1)
+#define PNG_NumColourComponents_GreyAlpha (2)
+#define PNG_NumColourComponents_TrueAlpha (4)
+
+/*
+ *  For the different ColourTypes
+ *  different BitDepths are specified.
+ */
+
+#define PNG_BitDepth_1  ( 1)
+#define PNG_BitDepth_2  ( 2)
+#define PNG_BitDepth_4  ( 4)
+#define PNG_BitDepth_8  ( 8)
+#define PNG_BitDepth_16 (16)
+
+/*
+ *  Only one valid CompressionMethod is standardized.
+ */
+
+#define PNG_CompressionMethod_0 (0)
+
+/*
+ *  Only one valid FilterMethod is currently standardized.
+ */
+
+#define PNG_FilterMethod_0 (0)
+
+/*
+ *  This FilterMethod defines 5 FilterTypes
+ */
+
+#define PNG_FilterType_None    (0)
+#define PNG_FilterType_Sub     (1)
+#define PNG_FilterType_Up      (2)
+#define PNG_FilterType_Average (3)
+#define PNG_FilterType_Paeth   (4)
+
+/*
+ *  Two InterlaceMethods are standardized :
+ *  0 - NonInterlaced
+ *  1 - Interlaced
+ */
+
+#define PNG_InterlaceMethod_NonInterlaced (0)
+#define PNG_InterlaceMethod_Interlaced    (1)
+
+/*
+ *  The Adam7 interlace method uses 7 passes.
+ */
+
+#define PNG_Adam7_NumPasses (7)
+
+/*
+ *  The compressed data starts with a header ...
+ */
+
+struct PNG_ZlibHeader
+{
+	uint8_t CompressionMethod;
+	uint8_t Flags;
+};
+
+#define PNG_ZlibHeader_Size (2)
+
+/*
+ *  ... and is followed by a check value
+ */
+
+#define PNG_ZlibCheckValue_Size (4)
+
+/*
+ *  Some support functions for buffered files follow.
+ */
+
+/*
+ *  buffered file representation
+ */
+
+struct BufferedFile
+{
+	byte *Buffer;
+	int   Length;
+	byte *Ptr;
+	int   BytesLeft;
+};
+
+/*
+ *  Read a file into a buffer.
+ */
+
+static struct BufferedFile *ReadBufferedFile(const char *name)
+{
+	struct BufferedFile *BF;
+	union {
+		byte *b;
+		void *v;
+	} buffer;
+
+	/*
+	 *  input verification
+	 */
+
+	if(!name)
+	{
+		return(NULL);
+	}
+
+	/*
+	 *  Allocate control struct.
+	 */
+
+	BF = ri.Malloc(sizeof(struct BufferedFile));
+	if(!BF)
+	{
+		return(NULL);
+	}
+
+	/*
+	 *  Initialize the structs components.
+	 */
+
+	BF->Length    = 0;
+	BF->Buffer    = NULL;
+	BF->Ptr       = NULL;
+	BF->BytesLeft = 0;
+
+	/*
+	 *  Read the file.
+	 */
+
+	BF->Length = ri.FS_ReadFile((char *) name, &buffer.v);
+	BF->Buffer = buffer.b;
+
+	/*
+	 *  Did we get it? Is it big enough?
+	 */
+
+	if(!(BF->Buffer && (BF->Length > 0)))
+	{
+		ri.Free(BF);
+
+		return(NULL);
+	}
+
+	/*
+	 *  Set the pointers and counters.
+	 */
+
+	BF->Ptr       = BF->Buffer;
+	BF->BytesLeft = BF->Length;
+
+	return(BF);
+}
+
+/*
+ *  Close a buffered file.
+ */
+
+static void CloseBufferedFile(struct BufferedFile *BF)
+{
+	if(BF)
+	{
+		if(BF->Buffer)
+		{
+			ri.FS_FreeFile(BF->Buffer);
+		}
+
+		ri.Free(BF);
+	}
+}
+
+/*
+ *  Get a pointer to the requested bytes.
+ */
+
+static void *BufferedFileRead(struct BufferedFile *BF, unsigned Length)
+{
+	void *RetVal;
+
+	/*
+	 *  input verification
+	 */
+
+	if(!(BF && Length))
+	{
+		return(NULL);
+	}
+
+	/*
+	 *  not enough bytes left
+	 */
+
+	if(Length > BF->BytesLeft)
+	{
+		return(NULL);
+	}
+
+	/*
+	 *  the pointer to the requested data
+	 */
+
+	RetVal = BF->Ptr;
+
+	/*
+	 *  Raise the pointer and counter.
+	 */
+
+	BF->Ptr       += Length;
+	BF->BytesLeft -= Length;
+
+	return(RetVal);
+}
+
+/*
+ *  Rewind the buffer.
+ */
+
+static qboolean BufferedFileRewind(struct BufferedFile *BF, unsigned Offset)
+{
+	unsigned BytesRead; 
+
+	/*
+	 *  input verification
+	 */
+
+	if(!BF)
+	{
+		return(qfalse);
+	}
+
+	/*
+	 *  special trick to rewind to the beginning of the buffer
+	 */
+
+	if(Offset == (unsigned)-1)
+	{
+		BF->Ptr       = BF->Buffer;
+		BF->BytesLeft = BF->Length;
+
+		return(qtrue);
+	}
+
+	/*
+	 *  How many bytes do we have already read?
+	 */
+
+	BytesRead = BF->Ptr - BF->Buffer;
+
+	/*
+	 *  We can only rewind to the beginning of the BufferedFile.
+	 */
+
+	if(Offset > BytesRead)
+	{
+		return(qfalse);
+	}
+
+	/*
+	 *  lower the pointer and counter.
+	 */
+
+	BF->Ptr       -= Offset;
+	BF->BytesLeft += Offset;
+
+	return(qtrue);
+}
+
+/*
+ *  Skip some bytes.
+ */
+
+static qboolean BufferedFileSkip(struct BufferedFile *BF, unsigned Offset)
+{
+	/*
+	 *  input verification
+	 */
+
+	if(!BF)
+	{
+		return(qfalse);
+	}
+
+	/*
+	 *  We can only skip to the end of the BufferedFile.
+	 */
+
+	if(Offset > BF->BytesLeft)
+	{
+		return(qfalse);
+	}
+
+	/*
+	 *  lower the pointer and counter.
+	 */
+
+	BF->Ptr       += Offset;
+	BF->BytesLeft -= Offset;
+
+	return(qtrue);
+}
+
+/*
+ *  Find a chunk
+ */
+
+static qboolean FindChunk(struct BufferedFile *BF, uint32_t ChunkType)
+{
+	struct PNG_ChunkHeader *CH;
+
+	uint32_t Length;
+	uint32_t Type;
+
+	/*
+	 *  input verification
+	 */
+
+	if(!BF)
+	{
+		return(qfalse);
+	}
+
+	/*
+	 *  cycle trough the chunks
+	 */
+
+	while(qtrue)
+	{
+		/*
+		 *  Read the chunk-header.
+		 */
+
+		CH = BufferedFileRead(BF, PNG_ChunkHeader_Size);
+		if(!CH)
+		{
+			return(qfalse);
+		}
+
+		/*
+		 *  Do not swap the original types
+		 *  they might be needed later.
+		 */
+
+		Length = BigLong(CH->Length);
+		Type   = BigLong(CH->Type);
+
+		/*
+		 *  We found it!
+		 */
+
+		if(Type == ChunkType)
+		{
+			/*
+			 *  Rewind to the start of the chunk.
+			 */
+
+			BufferedFileRewind(BF, PNG_ChunkHeader_Size);
+
+			break;
+		}
+		else
+		{
+			/*
+			 *  Skip the rest of the chunk.
+			 */
+
+			if(Length)
+			{
+				if(!BufferedFileSkip(BF, Length + PNG_ChunkCRC_Size))
+				{
+					return(qfalse);
+				}  
+			}
+		}
+	}
+
+	return(qtrue);
+}
+
+/*
+ *  Decompress all IDATs
+ */
+
+static uint32_t DecompressIDATs(struct BufferedFile *BF, uint8_t **Buffer)
+{
+	uint8_t  *DecompressedData;
+	uint32_t  DecompressedDataLength;
+
+	uint8_t  *CompressedData;
+	uint8_t  *CompressedDataPtr;
+	uint32_t  CompressedDataLength;
+
+	struct PNG_ChunkHeader *CH;
+
+	uint32_t Length;
+	uint32_t Type;
+
+	int BytesToRewind;
+
+	int32_t   puffResult;
+	uint8_t  *puffDest;
+	uint32_t  puffDestLen;
+	uint8_t  *puffSrc;
+	uint32_t  puffSrcLen;
+
+	/*
+	 *  input verification
+	 */
+
+	if(!(BF && Buffer))
+	{
+		return(-1);
+	}
+
+	/*
+	 *  some zeroing
+	 */
+
+	DecompressedData = NULL;
+	DecompressedDataLength = 0;
+	*Buffer = DecompressedData;
+
+	CompressedData = NULL;
+	CompressedDataLength = 0;
+
+	BytesToRewind = 0;
+
+	/*
+	 *  Find the first IDAT chunk.
+	 */
+
+	if(!FindChunk(BF, PNG_ChunkType_IDAT))
+	{
+		return(-1);
+	}
+
+	/*
+	 *  Count the size of the uncompressed data
+	 */
+
+	while(qtrue)
+	{
+		/*
+		 *  Read chunk header
+		 */
+
+		CH = BufferedFileRead(BF, PNG_ChunkHeader_Size);
+		if(!CH)
+		{
+			/*
+			 *  Rewind to the start of this adventure
+			 *  and return unsuccessfull
+			 */
+
+			BufferedFileRewind(BF, BytesToRewind);
+
+			return(-1);
+		}
+
+		/*
+		 *  Length and Type of chunk
+		 */
+
+		Length = BigLong(CH->Length);
+		Type   = BigLong(CH->Type);
+
+		/*
+		 *  We have reached the end of the IDAT chunks
+		 */
+
+		if(!(Type == PNG_ChunkType_IDAT))
+		{
+			BufferedFileRewind(BF, PNG_ChunkHeader_Size); 
+
+			break;
+		}
+
+		/*
+		 *  Add chunk header to count.
+		 */
+
+		BytesToRewind += PNG_ChunkHeader_Size;
+
+		/*
+		 *  Skip to next chunk
+		 */
+
+		if(Length)
+		{
+			if(!BufferedFileSkip(BF, Length + PNG_ChunkCRC_Size))
+			{
+				BufferedFileRewind(BF, BytesToRewind);
+
+				return(-1);
+			}
+
+			BytesToRewind += Length + PNG_ChunkCRC_Size;
+			CompressedDataLength += Length;
+		} 
+	}
+
+	BufferedFileRewind(BF, BytesToRewind);
+
+	CompressedData = ri.Malloc(CompressedDataLength);
+	if(!CompressedData)
+	{
+		return(-1);
+	}
+
+	CompressedDataPtr = CompressedData;
+
+	/*
+	 *  Collect the compressed Data
+	 */
+
+	while(qtrue)
+	{
+		/*
+		 *  Read chunk header
+		 */
+
+		CH = BufferedFileRead(BF, PNG_ChunkHeader_Size);
+		if(!CH)
+		{
+			ri.Free(CompressedData); 
+
+			return(-1);
+		}
+
+		/*
+		 *  Length and Type of chunk
+		 */
+
+		Length = BigLong(CH->Length);
+		Type   = BigLong(CH->Type);
+
+		/*
+		 *  We have reached the end of the IDAT chunks
+		 */
+
+		if(!(Type == PNG_ChunkType_IDAT))
+		{
+			BufferedFileRewind(BF, PNG_ChunkHeader_Size); 
+
+			break;
+		}
+
+		/*
+		 *  Copy the Data
+		 */
+
+		if(Length)
+		{
+			uint8_t *OrigCompressedData;
+
+			OrigCompressedData = BufferedFileRead(BF, Length);
+			if(!OrigCompressedData)
+			{
+				ri.Free(CompressedData); 
+
+				return(-1);
+			}
+
+			if(!BufferedFileSkip(BF, PNG_ChunkCRC_Size))
+			{
+				ri.Free(CompressedData); 
+
+				return(-1);
+			}
+
+			memcpy(CompressedDataPtr, OrigCompressedData, Length);
+			CompressedDataPtr += Length;
+		} 
+	}
+
+	/*
+	 *  Let puff() calculate the decompressed data length.
+	 */
+
+	puffDest    = NULL;
+	puffDestLen = 0;
+
+	/*
+	 *  The zlib header and checkvalue don't belong to the compressed data.
+	 */
+
+	puffSrc    = CompressedData + PNG_ZlibHeader_Size;
+	puffSrcLen = CompressedDataLength - PNG_ZlibHeader_Size - PNG_ZlibCheckValue_Size;
+
+	/*
+	 *  first puff() to calculate the size of the uncompressed data
+	 */
+
+	puffResult = puff(puffDest, &puffDestLen, puffSrc, &puffSrcLen);
+	if(!((puffResult == 0) && (puffDestLen > 0)))
+	{
+		ri.Free(CompressedData);
+
+		return(-1);
+	}
+
+	/*
+	 *  Allocate the buffer for the uncompressed data.
+	 */
+
+	DecompressedData = ri.Malloc(puffDestLen);
+	if(!DecompressedData)
+	{
+		ri.Free(CompressedData);
+
+		return(-1);
+	}
+
+	/*
+	 *  Set the input again in case something was changed by the last puff() .
+	 */
+
+	puffDest   = DecompressedData;
+	puffSrc    = CompressedData + PNG_ZlibHeader_Size;
+	puffSrcLen = CompressedDataLength - PNG_ZlibHeader_Size - PNG_ZlibCheckValue_Size;
+
+	/*
+	 *  decompression puff()
+	 */
+
+	puffResult = puff(puffDest, &puffDestLen, puffSrc, &puffSrcLen);
+
+	/*
+	 *  The compressed data is not needed anymore.
+	 */
+
+	ri.Free(CompressedData);
+
+	/*
+	 *  Check if the last puff() was successfull.
+	 */
+
+	if(!((puffResult == 0) && (puffDestLen > 0)))
+	{
+		ri.Free(DecompressedData);
+
+		return(-1);
+	}
+
+	/*
+	 *  Set the output of this function.
+	 */
+
+	DecompressedDataLength = puffDestLen;
+	*Buffer = DecompressedData;
+
+	return(DecompressedDataLength);
+}
+
+/*
+ *  the Paeth predictor
+ */
+
+static uint8_t PredictPaeth(uint8_t a, uint8_t b, uint8_t c)
+{
+	/*
+	 *  a == Left
+	 *  b == Up
+	 *  c == UpLeft
+	 */
+
+	uint8_t Pr;
+	int p;
+	int pa, pb, pc;
+
+	p  = ((int) a) + ((int) b) - ((int) c);
+	pa = abs(p - ((int) a));
+	pb = abs(p - ((int) b));
+	pc = abs(p - ((int) c));
+
+	if((pa <= pb) && (pa <= pc))
+	{
+		Pr = a;
+	}
+	else if(pb <= pc)
+	{
+		Pr = b;
+	}
+	else
+	{
+		Pr = c;
+	}
+
+	return(Pr);
+
+}
+
+/*
+ *  Reverse the filters.
+ */
+
+static qboolean UnfilterImage(uint8_t  *DecompressedData, 
+		uint32_t  ImageHeight,
+		uint32_t  BytesPerScanline, 
+		uint32_t  BytesPerPixel)
+{
+	uint8_t   *DecompPtr;
+	uint8_t   FilterType;
+	uint8_t  *PixelLeft, *PixelUp, *PixelUpLeft;
+	uint32_t  w, h, p;
+
+	/*
+	 *  some zeros for the filters
+	 */
+
+	uint8_t Zeros[8] = {0, 0, 0, 0, 0, 0, 0, 0};
+
+	/*
+	 *  input verification
+	 */
+
+	if(!(DecompressedData && BytesPerPixel))
+	{
+		return(qfalse);
+	}
+
+	/*
+	 *  ImageHeight and BytesPerScanline can be zero in small interlaced images.
+	 */
+
+	if((!ImageHeight) || (!BytesPerScanline))
+	{
+		return(qtrue);
+	}
+
+	/*
+	 *  Set the pointer to the start of the decompressed Data.
+	 */
+
+	DecompPtr = DecompressedData;
+
+	/*
+	 *  Un-filtering is done in place.
+	 */
+
+	/*
+	 *  Go trough all scanlines.
+	 */
+
+	for(h = 0; h < ImageHeight; h++)
+	{
+		/*
+		 *  Every scanline starts with a FilterType byte.
+		 */
+
+		FilterType = *DecompPtr;
+		DecompPtr++;
+
+		/*
+		 *  Left pixel of the first byte in a scanline is zero.
+		 */
+
+		PixelLeft = Zeros;
+
+		/*
+		 *  Set PixelUp to previous line only if we are on the second line or above.
+		 *
+		 *  Plus one byte for the FilterType
+		 */
+
+		if(h > 0)
+		{
+			PixelUp = DecompPtr - (BytesPerScanline + 1);
+		}
+		else
+		{
+			PixelUp = Zeros;
+		}
+
+		/*
+		 * The pixel left to the first pixel of the previous scanline is zero too.
+		 */
+
+		PixelUpLeft = Zeros;
+
+		/*
+		 *  Cycle trough all pixels of the scanline.
+		 */
+
+		for(w = 0; w < (BytesPerScanline / BytesPerPixel); w++)
+		{
+			/*
+			 *  Cycle trough the bytes of the pixel.
+			 */
+
+			for(p = 0; p < BytesPerPixel; p++)
+			{
+				switch(FilterType)
+				{ 
+					case PNG_FilterType_None :
+					{
+						/*
+						 *  The byte is unfiltered.
+						 */
+
+						break;
+					}
+
+					case PNG_FilterType_Sub :
+					{
+						DecompPtr[p] += PixelLeft[p];
+
+						break;
+					}
+
+					case PNG_FilterType_Up :
+					{
+						DecompPtr[p] += PixelUp[p];
+
+						break;
+					}
+
+					case PNG_FilterType_Average :
+					{
+						DecompPtr[p] += ((uint8_t) ((((uint16_t) PixelLeft[p]) + ((uint16_t) PixelUp[p])) / 2));
+
+						break;
+					}
+
+					case PNG_FilterType_Paeth :
+					{
+						DecompPtr[p] += PredictPaeth(PixelLeft[p], PixelUp[p], PixelUpLeft[p]);
+
+						break;
+					}
+
+					default :
+					{
+						return(qfalse);
+					}
+				}
+			}
+
+			PixelLeft = DecompPtr;
+
+			/*
+			 *  We only have an upleft pixel if we are on the second line or above.
+			 */
+
+			if(h > 0)
+			{
+				PixelUpLeft = DecompPtr - (BytesPerScanline + 1);
+			}
+
+			/*
+			 *  Skip to the next pixel.
+			 */
+
+			DecompPtr += BytesPerPixel;
+
+			/*
+			 *  We only have a previous line if we are on the second line and above.
+			 */
+
+			if(h > 0)
+			{
+				PixelUp = DecompPtr - (BytesPerScanline + 1);
+			}
+		}
+	}
+
+	return(qtrue);
+}
+
+/*
+ *  Convert a raw input pixel to Quake 3 RGA format.
+ */
+
+static qboolean ConvertPixel(struct PNG_Chunk_IHDR *IHDR,
+		byte                  *OutPtr,
+		uint8_t               *DecompPtr,
+		qboolean               HasTransparentColour,
+		uint8_t               *TransparentColour,
+		uint8_t               *OutPal)
+{
+	/*
+	 *  input verification
+	 */
+
+	if(!(IHDR && OutPtr && DecompPtr && TransparentColour && OutPal))
+	{
+		return(qfalse);
+	}
+
+	switch(IHDR->ColourType)
+	{
+		case PNG_ColourType_Grey :
+		{
+			switch(IHDR->BitDepth)
+			{
+				case PNG_BitDepth_1 :
+				case PNG_BitDepth_2 :
+				case PNG_BitDepth_4 :
+				{
+					uint8_t Step;
+					uint8_t GreyValue;
+
+					Step = 0xFF / ((1 << IHDR->BitDepth) - 1);
+
+					GreyValue = DecompPtr[0] * Step;
+
+					OutPtr[0] = GreyValue;
+					OutPtr[1] = GreyValue;
+					OutPtr[2] = GreyValue;
+					OutPtr[3] = 0xFF;
+
+					/*
+					 *  Grey supports full transparency for one specified colour
+					 */
+
+					if(HasTransparentColour)
+					{
+						if(TransparentColour[1] == DecompPtr[0])
+						{
+							OutPtr[3] = 0x00;
+						}
+					}
+
+
+					break;
+				}
+
+				case PNG_BitDepth_8 :
+				case PNG_BitDepth_16 :
+				{
+					OutPtr[0] = DecompPtr[0];
+					OutPtr[1] = DecompPtr[0];
+					OutPtr[2] = DecompPtr[0];
+					OutPtr[3] = 0xFF;
+
+					/*
+					 *  Grey supports full transparency for one specified colour
+					 */
+
+					if(HasTransparentColour)
+					{
+						if(IHDR->BitDepth == PNG_BitDepth_8)
+						{
+							if(TransparentColour[1] == DecompPtr[0])
+							{
+								OutPtr[3] = 0x00;
+							}
+						}
+						else
+						{
+							if((TransparentColour[0] == DecompPtr[0]) && (TransparentColour[1] == DecompPtr[1]))
+							{
+								OutPtr[3] = 0x00;
+							}
+						}
+					}
+
+					break;
+				}
+
+				default :
+				{
+					return(qfalse);
+				}
+			}
+
+			break;
+		}
+
+		case PNG_ColourType_True :
+		{
+			switch(IHDR->BitDepth)
+			{
+				case PNG_BitDepth_8 :
+				{
+					OutPtr[0] = DecompPtr[0];
+					OutPtr[1] = DecompPtr[1];
+					OutPtr[2] = DecompPtr[2];
+					OutPtr[3] = 0xFF;
+
+					/*
+					 *  True supports full transparency for one specified colour
+					 */
+
+					if(HasTransparentColour)
+					{
+						if((TransparentColour[1] == DecompPtr[0]) &&
+								(TransparentColour[3] == DecompPtr[1]) &&
+								(TransparentColour[5] == DecompPtr[2]))
+						{
+							OutPtr[3] = 0x00;
+						}
+					}
+
+					break;
+				}
+
+				case PNG_BitDepth_16 :
+				{
+					/*
+					 *  We use only the upper byte.
+					 */
+
+					OutPtr[0] = DecompPtr[0];
+					OutPtr[1] = DecompPtr[2];
+					OutPtr[2] = DecompPtr[4];
+					OutPtr[3] = 0xFF;
+
+					/*
+					 *  True supports full transparency for one specified colour
+					 */
+
+					if(HasTransparentColour)
+					{
+						if((TransparentColour[0] == DecompPtr[0]) && (TransparentColour[1] == DecompPtr[1]) &&
+								(TransparentColour[2] == DecompPtr[2]) && (TransparentColour[3] == DecompPtr[3]) &&
+								(TransparentColour[4] == DecompPtr[4]) && (TransparentColour[5] == DecompPtr[5]))
+						{
+							OutPtr[3] = 0x00;
+						}
+					}
+
+					break;
+				}
+
+				default :
+				{
+					return(qfalse);
+				}
+			}
+
+			break;
+		}
+
+		case PNG_ColourType_Indexed :
+		{
+			OutPtr[0] = OutPal[DecompPtr[0] * Q3IMAGE_BYTESPERPIXEL + 0];
+			OutPtr[1] = OutPal[DecompPtr[0] * Q3IMAGE_BYTESPERPIXEL + 1];
+			OutPtr[2] = OutPal[DecompPtr[0] * Q3IMAGE_BYTESPERPIXEL + 2];
+			OutPtr[3] = OutPal[DecompPtr[0] * Q3IMAGE_BYTESPERPIXEL + 3];
+
+			break;
+		}
+
+		case PNG_ColourType_GreyAlpha :
+		{
+			switch(IHDR->BitDepth)
+			{
+				case PNG_BitDepth_8 :
+				{
+					OutPtr[0] = DecompPtr[0];
+					OutPtr[1] = DecompPtr[0];
+					OutPtr[2] = DecompPtr[0];
+					OutPtr[3] = DecompPtr[1];
+
+					break;
+				}
+
+				case PNG_BitDepth_16 :
+				{
+					/*
+					 *  We use only the upper byte.
+					 */
+
+					OutPtr[0] = DecompPtr[0];
+					OutPtr[1] = DecompPtr[0];
+					OutPtr[2] = DecompPtr[0];
+					OutPtr[3] = DecompPtr[2];
+
+					break;
+				}
+
+				default :
+				{
+					return(qfalse);
+				}
+			}
+
+			break;
+		}
+
+		case PNG_ColourType_TrueAlpha :
+		{
+			switch(IHDR->BitDepth)
+			{
+				case PNG_BitDepth_8 :
+				{
+					OutPtr[0] = DecompPtr[0];
+					OutPtr[1] = DecompPtr[1];
+					OutPtr[2] = DecompPtr[2];
+					OutPtr[3] = DecompPtr[3];
+
+					break;
+				}
+
+				case PNG_BitDepth_16 :
+				{
+					/*
+					 *  We use only the upper byte.
+					 */
+
+					OutPtr[0] = DecompPtr[0];
+					OutPtr[1] = DecompPtr[2];
+					OutPtr[2] = DecompPtr[4];
+					OutPtr[3] = DecompPtr[6];
+
+					break;
+				}
+
+				default :
+				{
+					return(qfalse);
+				}
+			}
+
+			break;
+		}
+
+		default :
+		{
+			return(qfalse);
+		}
+	}
+
+	return(qtrue);
+}
+
+
+/*
+ *  Decode a non-interlaced image.
+ */
+
+static qboolean DecodeImageNonInterlaced(struct PNG_Chunk_IHDR *IHDR,
+		byte                  *OutBuffer, 
+		uint8_t               *DecompressedData,
+		uint32_t               DecompressedDataLength,
+		qboolean               HasTransparentColour,
+		uint8_t               *TransparentColour,
+		uint8_t               *OutPal)
+{
+	uint32_t IHDR_Width;
+	uint32_t IHDR_Height;
+	uint32_t BytesPerScanline, BytesPerPixel, PixelsPerByte;
+	uint32_t  w, h, p;
+	byte *OutPtr;
+	uint8_t *DecompPtr;
+
+	/*
+	 *  input verification
+	 */
+
+	if(!(IHDR && OutBuffer && DecompressedData && DecompressedDataLength && TransparentColour && OutPal))
+	{
+		return(qfalse);
+	}
+
+	/*
+	 *  byte swapping
+	 */
+
+	IHDR_Width  = BigLong(IHDR->Width);
+	IHDR_Height = BigLong(IHDR->Height);
+
+	/*
+	 *  information for un-filtering
+	 */
+
+	switch(IHDR->ColourType)
+	{
+		case PNG_ColourType_Grey :
+		{
+			switch(IHDR->BitDepth)
+			{
+				case PNG_BitDepth_1 :
+				case PNG_BitDepth_2 :
+				case PNG_BitDepth_4 :
+				{
+					BytesPerPixel    = 1;
+					PixelsPerByte    = 8 / IHDR->BitDepth;
+
+					break;
+				}
+
+				case PNG_BitDepth_8  :
+				case PNG_BitDepth_16 :
+				{
+					BytesPerPixel    = (IHDR->BitDepth / 8) * PNG_NumColourComponents_Grey;
+					PixelsPerByte    = 1;
+
+					break;
+				}
+
+				default :
+				{
+					return(qfalse);
+				}
+			}
+
+			break;
+		}
+
+		case PNG_ColourType_True :
+		{
+			switch(IHDR->BitDepth)
+			{
+				case PNG_BitDepth_8  :
+				case PNG_BitDepth_16 :
+				{
+					BytesPerPixel    = (IHDR->BitDepth / 8) * PNG_NumColourComponents_True;
+					PixelsPerByte    = 1;
+
+					break;
+				}
+
+				default :
+				{
+					return(qfalse);
+				}
+			}
+
+			break;
+		}
+
+		case PNG_ColourType_Indexed :
+		{
+			switch(IHDR->BitDepth)
+			{
+				case PNG_BitDepth_1 :
+				case PNG_BitDepth_2 :
+				case PNG_BitDepth_4 :
+				{
+					BytesPerPixel    = 1;
+					PixelsPerByte    = 8 / IHDR->BitDepth;
+
+					break;
+				}
+
+				case PNG_BitDepth_8 :
+				{
+					BytesPerPixel    = PNG_NumColourComponents_Indexed;
+					PixelsPerByte    = 1;
+
+					break;
+				}
+
+				default :
+				{
+					return(qfalse);
+				}
+			}
+
+			break;
+		}
+
+		case PNG_ColourType_GreyAlpha :
+		{
+			switch(IHDR->BitDepth)
+			{
+				case PNG_BitDepth_8 :
+				case PNG_BitDepth_16 :
+				{
+					BytesPerPixel    = (IHDR->BitDepth / 8) * PNG_NumColourComponents_GreyAlpha;
+					PixelsPerByte    = 1;
+
+					break;
+				}
+
+				default :
+				{
+					return(qfalse);
+				}
+			}
+
+			break;
+		}
+
+		case PNG_ColourType_TrueAlpha :
+		{
+			switch(IHDR->BitDepth)
+			{
+				case PNG_BitDepth_8 :
+				case PNG_BitDepth_16 :
+				{
+					BytesPerPixel    = (IHDR->BitDepth / 8) * PNG_NumColourComponents_TrueAlpha;
+					PixelsPerByte    = 1;
+
+					break;
+				}
+
+				default :
+				{
+					return(qfalse);
+				}
+			}
+
+			break;
+		}
+
+		default :
+		{
+			return(qfalse);
+		}
+	}
+
+	/*
+	 *  Calculate the size of one scanline
+	 */
+
+	BytesPerScanline = (IHDR_Width * BytesPerPixel + (PixelsPerByte - 1)) / PixelsPerByte;
+
+	/*
+	 *  Check if we have enough data for the whole image.
+	 */
+
+	if(!(DecompressedDataLength == ((BytesPerScanline + 1) * IHDR_Height)))
+	{
+		return(qfalse);
+	}
+
+	/*
+	 *  Unfilter the image.
+	 */
+
+	if(!UnfilterImage(DecompressedData, IHDR_Height, BytesPerScanline, BytesPerPixel))
+	{
+		return(qfalse);
+	}
+
+	/*
+	 *  Set the working pointers to the beginning of the buffers.
+	 */
+
+	OutPtr = OutBuffer;
+	DecompPtr = DecompressedData;
+
+	/*
+	 *  Create the output image.
+	 */
+
+	for(h = 0; h < IHDR_Height; h++)
+	{
+		/*
+		 *  Count the pixels on the scanline for those multipixel bytes
+		 */
+
+		uint32_t CurrPixel;
+
+		/*
+		 *  skip FilterType
+		 */
+
+		DecompPtr++;
+
+		/*
+		 *  Reset the pixel count.
+		 */
+
+		CurrPixel = 0;
+
+		for(w = 0; w < (BytesPerScanline / BytesPerPixel); w++)
+		{
+			if(PixelsPerByte > 1)
+			{
+				uint8_t  Mask;
+				uint32_t Shift;
+				uint8_t  SinglePixel;
+
+				for(p = 0; p < PixelsPerByte; p++)
+				{
+					if(CurrPixel < IHDR_Width)
+					{
+						Mask  = (1 << IHDR->BitDepth) - 1;
+						Shift = (PixelsPerByte - 1 - p) * IHDR->BitDepth;
+
+						SinglePixel = ((DecompPtr[0] & (Mask << Shift)) >> Shift);
+
+						if(!ConvertPixel(IHDR, OutPtr, &SinglePixel, HasTransparentColour, TransparentColour, OutPal))
+						{
+							return(qfalse);
+						}
+
+						OutPtr += Q3IMAGE_BYTESPERPIXEL;
+						CurrPixel++;
+					}
+				}
+
+			}
+			else
+			{
+				if(!ConvertPixel(IHDR, OutPtr, DecompPtr, HasTransparentColour, TransparentColour, OutPal))
+				{
+					return(qfalse);
+				}
+
+
+				OutPtr += Q3IMAGE_BYTESPERPIXEL;
+			}
+
+			DecompPtr += BytesPerPixel;
+		}
+	}
+
+	return(qtrue);
+}
+
+/*
+ *  Decode an interlaced image.
+ */
+
+static qboolean DecodeImageInterlaced(struct PNG_Chunk_IHDR *IHDR,
+		byte                  *OutBuffer, 
+		uint8_t               *DecompressedData,
+		uint32_t               DecompressedDataLength,
+		qboolean               HasTransparentColour,
+		uint8_t               *TransparentColour,
+		uint8_t               *OutPal)
+{
+	uint32_t IHDR_Width;
+	uint32_t IHDR_Height;
+	uint32_t BytesPerScanline[PNG_Adam7_NumPasses], BytesPerPixel, PixelsPerByte;
+	uint32_t PassWidth[PNG_Adam7_NumPasses], PassHeight[PNG_Adam7_NumPasses];
+	uint32_t WSkip[PNG_Adam7_NumPasses], WOffset[PNG_Adam7_NumPasses], HSkip[PNG_Adam7_NumPasses], HOffset[PNG_Adam7_NumPasses];
+	uint32_t w, h, p, a;
+	byte *OutPtr;
+	uint8_t *DecompPtr;
+	uint32_t TargetLength;
+
+	/*
+	 *  input verification
+	 */
+
+	if(!(IHDR && OutBuffer && DecompressedData && DecompressedDataLength && TransparentColour && OutPal))
+	{
+		return(qfalse);
+	}
+
+	/*
+	 *  byte swapping
+	 */
+
+	IHDR_Width  = BigLong(IHDR->Width);
+	IHDR_Height = BigLong(IHDR->Height);
+
+	/*
+	 *  Skip and Offset for the passes.
+	 */
+
+	WSkip[0]   = 8;
+	WOffset[0] = 0;
+	HSkip[0]   = 8;
+	HOffset[0] = 0;
+
+	WSkip[1]   = 8;
+	WOffset[1] = 4;
+	HSkip[1]   = 8;
+	HOffset[1] = 0;
+
+	WSkip[2]   = 4;
+	WOffset[2] = 0;
+	HSkip[2]   = 8;
+	HOffset[2] = 4;
+
+	WSkip[3]   = 4;
+	WOffset[3] = 2;
+	HSkip[3]   = 4;
+	HOffset[3] = 0;
+
+	WSkip[4]   = 2;
+	WOffset[4] = 0;
+	HSkip[4]   = 4;
+	HOffset[4] = 2;
+
+	WSkip[5]   = 2;
+	WOffset[5] = 1;
+	HSkip[5]   = 2;
+	HOffset[5] = 0;
+
+	WSkip[6]   = 1;
+	WOffset[6] = 0;
+	HSkip[6]   = 2;
+	HOffset[6] = 1;
+
+	/*
+	 *  Calculate the sizes of the passes.
+	 */
+
+	PassWidth[0]  = (IHDR_Width  + 7) / 8;
+	PassHeight[0] = (IHDR_Height + 7) / 8;
+
+	PassWidth[1]  = (IHDR_Width  + 3) / 8;
+	PassHeight[1] = (IHDR_Height + 7) / 8;
+
+	PassWidth[2]  = (IHDR_Width  + 3) / 4;
+	PassHeight[2] = (IHDR_Height + 3) / 8;
+
+	PassWidth[3]  = (IHDR_Width  + 1) / 4;
+	PassHeight[3] = (IHDR_Height + 3) / 4;
+
+	PassWidth[4]  = (IHDR_Width  + 1) / 2;
+	PassHeight[4] = (IHDR_Height + 1) / 4;
+
+	PassWidth[5]  = (IHDR_Width  + 0) / 2;
+	PassHeight[5] = (IHDR_Height + 1) / 2;
+
+	PassWidth[6]  = (IHDR_Width  + 0) / 1;
+	PassHeight[6] = (IHDR_Height + 0) / 2;
+
+	/*
+	 *  information for un-filtering
+	 */
+
+	switch(IHDR->ColourType)
+	{
+		case PNG_ColourType_Grey :
+		{
+			switch(IHDR->BitDepth)
+			{
+				case PNG_BitDepth_1 :
+				case PNG_BitDepth_2 :
+				case PNG_BitDepth_4 :
+				{
+					BytesPerPixel    = 1;
+					PixelsPerByte    = 8 / IHDR->BitDepth;
+
+					break;
+				}
+
+				case PNG_BitDepth_8  :
+				case PNG_BitDepth_16 :
+				{
+					BytesPerPixel    = (IHDR->BitDepth / 8) * PNG_NumColourComponents_Grey;
+					PixelsPerByte    = 1;
+
+					break;
+				}
+
+				default :
+				{
+					return(qfalse);
+				}
+			}
+
+			break;
+		}
+
+		case PNG_ColourType_True :
+		{
+			switch(IHDR->BitDepth)
+			{
+				case PNG_BitDepth_8  :
+				case PNG_BitDepth_16 :
+				{
+					BytesPerPixel    = (IHDR->BitDepth / 8) * PNG_NumColourComponents_True;
+					PixelsPerByte    = 1;
+
+					break;
+				}
+
+				default :
+				{
+					return(qfalse);
+				}
+			}
+
+			break;
+		}
+
+		case PNG_ColourType_Indexed :
+		{
+			switch(IHDR->BitDepth)
+			{
+				case PNG_BitDepth_1 :
+				case PNG_BitDepth_2 :
+				case PNG_BitDepth_4 :
+				{
+					BytesPerPixel    = 1;
+					PixelsPerByte    = 8 / IHDR->BitDepth;
+
+					break;
+				}
+
+				case PNG_BitDepth_8 :
+				{
+					BytesPerPixel    = PNG_NumColourComponents_Indexed;
+					PixelsPerByte    = 1;
+
+					break;
+				}
+
+				default :
+				{
+					return(qfalse);
+				}
+			}
+
+			break;
+		}
+
+		case PNG_ColourType_GreyAlpha :
+		{
+			switch(IHDR->BitDepth)
+			{
+				case PNG_BitDepth_8 :
+				case PNG_BitDepth_16 :
+				{
+					BytesPerPixel    = (IHDR->BitDepth / 8) * PNG_NumColourComponents_GreyAlpha;
+					PixelsPerByte    = 1;
+
+					break;
+				}
+
+				default :
+				{
+					return(qfalse);
+				}
+			}
+
+			break;
+		}
+
+		case PNG_ColourType_TrueAlpha :
+		{
+			switch(IHDR->BitDepth)
+			{
+				case PNG_BitDepth_8 :
+				case PNG_BitDepth_16 :
+				{
+					BytesPerPixel    = (IHDR->BitDepth / 8) * PNG_NumColourComponents_TrueAlpha;
+					PixelsPerByte    = 1;
+
+					break;
+				}
+
+				default :
+				{
+					return(qfalse);
+				}
+			}
+
+			break;
+		}
+
+		default :
+		{
+			return(qfalse);
+		}
+	}
+
+	/*
+	 *  Calculate the size of the scanlines per pass
+	 */
+
+	for(a = 0; a < PNG_Adam7_NumPasses; a++)
+	{
+		BytesPerScanline[a] = (PassWidth[a] * BytesPerPixel + (PixelsPerByte - 1)) / PixelsPerByte;
+	}
+
+	/*
+	 *  Calculate the size of all passes
+	 */
+
+	TargetLength = 0;
+
+	for(a = 0; a < PNG_Adam7_NumPasses; a++)
+	{
+		TargetLength += ((BytesPerScanline[a] + (BytesPerScanline[a] ? 1 : 0)) * PassHeight[a]);
+	}
+
+	/*
+	 *  Check if we have enough data for the whole image.
+	 */
+
+	if(!(DecompressedDataLength == TargetLength))
+	{
+		return(qfalse);
+	}
+
+	/*
+	 *  Unfilter the image.
+	 */
+
+	DecompPtr = DecompressedData;
+
+	for(a = 0; a < PNG_Adam7_NumPasses; a++)
+	{
+		if(!UnfilterImage(DecompPtr, PassHeight[a], BytesPerScanline[a], BytesPerPixel))
+		{
+			return(qfalse);
+		}
+
+		DecompPtr += ((BytesPerScanline[a] + (BytesPerScanline[a] ? 1 : 0)) * PassHeight[a]);
+	}
+
+	/*
+	 *  Set the working pointers to the beginning of the buffers.
+	 */
+
+	DecompPtr = DecompressedData;
+
+	/*
+	 *  Create the output image.
+	 */
+
+	for(a = 0; a < PNG_Adam7_NumPasses; a++)
+	{
+		for(h = 0; h < PassHeight[a]; h++)
+		{
+			/*
+			 *  Count the pixels on the scanline for those multipixel bytes
+			 */
+
+			uint32_t CurrPixel;
+
+			/*
+			 *  skip FilterType
+			 *  but only when the pass has a width bigger than zero
+			 */
+
+			if(BytesPerScanline[a])
+			{
+				DecompPtr++;
+			}
+
+			/*
+			 *  Reset the pixel count.
+			 */
+
+			CurrPixel = 0;
+
+			for(w = 0; w < (BytesPerScanline[a] / BytesPerPixel); w++)
+			{
+				if(PixelsPerByte > 1)
+				{
+					uint8_t  Mask;
+					uint32_t Shift;
+					uint8_t  SinglePixel;
+
+					for(p = 0; p < PixelsPerByte; p++)
+					{
+						if(CurrPixel < PassWidth[a])
+						{
+							Mask  = (1 << IHDR->BitDepth) - 1;
+							Shift = (PixelsPerByte - 1 - p) * IHDR->BitDepth;
+
+							SinglePixel = ((DecompPtr[0] & (Mask << Shift)) >> Shift);
+
+							OutPtr = OutBuffer + (((((h * HSkip[a]) + HOffset[a]) * IHDR_Width) + ((CurrPixel * WSkip[a]) + WOffset[a])) * Q3IMAGE_BYTESPERPIXEL);
+
+							if(!ConvertPixel(IHDR, OutPtr, &SinglePixel, HasTransparentColour, TransparentColour, OutPal))
+							{
+								return(qfalse);
+							}
+
+							CurrPixel++;
+						}
+					}
+
+				}
+				else
+				{
+					OutPtr = OutBuffer + (((((h * HSkip[a]) + HOffset[a]) * IHDR_Width) + ((w * WSkip[a]) + WOffset[a])) * Q3IMAGE_BYTESPERPIXEL);
+
+					if(!ConvertPixel(IHDR, OutPtr, DecompPtr, HasTransparentColour, TransparentColour, OutPal))
+					{
+						return(qfalse);
+					}
+				}
+
+				DecompPtr += BytesPerPixel;
+			}
+		}
+	}
+
+	return(qtrue);
+}
+
+/*
+ *  The PNG loader
+ */
+
+void R_LoadPNG(const char *name, byte **pic, int *width, int *height)
+{
+	struct BufferedFile *ThePNG;
+	byte *OutBuffer;
+	uint8_t *Signature;
+	struct PNG_ChunkHeader *CH;
+	uint32_t ChunkHeaderLength;
+	uint32_t ChunkHeaderType;
+	struct PNG_Chunk_IHDR *IHDR;
+	uint32_t IHDR_Width;
+	uint32_t IHDR_Height;
+	PNG_ChunkCRC *CRC;
+	uint8_t *InPal;
+	uint8_t *DecompressedData;
+	uint32_t DecompressedDataLength;
+	uint32_t i;
+
+	/*
+	 *  palette with 256 RGBA entries
+	 */
+
+	uint8_t OutPal[1024];
+
+	/*
+	 *  transparent colour from the tRNS chunk
+	 */
+
+	qboolean HasTransparentColour = qfalse;
+	uint8_t TransparentColour[6] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
+
+	/*
+	 *  input verification
+	 */
+
+	if(!(name && pic))
+	{
+		return;
+	}
+
+	/*
+	 *  Zero out return values.
+	 */
+
+	*pic = NULL;
+
+	if(width)
+	{
+		*width = 0;
+	}
+
+	if(height)
+	{
+		*height = 0;
+	}
+
+	/*
+	 *  Read the file.
+	 */
+
+	ThePNG = ReadBufferedFile(name);
+	if(!ThePNG)
+	{
+		return;
+	}           
+
+	/*
+	 *  Read the siganture of the file.
+	 */
+
+	Signature = BufferedFileRead(ThePNG, PNG_Signature_Size);
+	if(!Signature)
+	{
+		CloseBufferedFile(ThePNG);
+
+		return;
+	}
+
+	/*
+	 *  Is it a PNG?
+	 */
+
+	if(memcmp(Signature, PNG_Signature, PNG_Signature_Size))
+	{
+		CloseBufferedFile(ThePNG);
+
+		return; 
+	}
+
+	/*
+	 *  Read the first chunk-header.
+	 */
+
+	CH = BufferedFileRead(ThePNG, PNG_ChunkHeader_Size);
+	if(!CH)
+	{
+		CloseBufferedFile(ThePNG);
+
+		return; 
+	}
+
+	/*
+	 *  PNG multi-byte types are in Big Endian
+	 */
+
+	ChunkHeaderLength = BigLong(CH->Length);
+	ChunkHeaderType   = BigLong(CH->Type);
+
+	/*
+	 *  Check if the first chunk is an IHDR.
+	 */
+
+	if(!((ChunkHeaderType == PNG_ChunkType_IHDR) && (ChunkHeaderLength == PNG_Chunk_IHDR_Size)))
+	{
+		CloseBufferedFile(ThePNG);
+
+		return; 
+	}
+
+	/*
+	 *  Read the IHDR.
+	 */ 
+
+	IHDR = BufferedFileRead(ThePNG, PNG_Chunk_IHDR_Size);
+	if(!IHDR)
+	{
+		CloseBufferedFile(ThePNG);
+
+		return; 
+	}
+
+	/*
+	 *  Read the CRC for IHDR
+	 */
+
+	CRC = BufferedFileRead(ThePNG, PNG_ChunkCRC_Size);
+	if(!CRC)
+	{
+		CloseBufferedFile(ThePNG);
+
+		return; 
+	}
+
+	/*
+	 *  Here we could check the CRC if we wanted to.
+	 */
+
+	/*
+	 *  multi-byte type swapping
+	 */
+
+	IHDR_Width  = BigLong(IHDR->Width);
+	IHDR_Height = BigLong(IHDR->Height);
+
+	/*
+	 *  Check if Width and Height are valid.
+	 */
+
+	if(!((IHDR_Width > 0) && (IHDR_Height > 0))
+	|| IHDR_Width > INT_MAX / Q3IMAGE_BYTESPERPIXEL / IHDR_Height)
+	{
+		CloseBufferedFile(ThePNG);
+
+		ri.Printf( PRINT_WARNING, "%s: invalid image size\n", name );
+
+		return; 
+	}
+
+	/*
+	 *  Do we need to check if the dimensions of the image are valid for Quake3?
+	 */
+
+	/*
+	 *  Check if CompressionMethod and FilterMethod are valid.
+	 */
+
+	if(!((IHDR->CompressionMethod == PNG_CompressionMethod_0) && (IHDR->FilterMethod == PNG_FilterMethod_0)))
+	{
+		CloseBufferedFile(ThePNG);
+
+		return; 
+	}
+
+	/*
+	 *  Check if InterlaceMethod is valid.
+	 */
+
+	if(!((IHDR->InterlaceMethod == PNG_InterlaceMethod_NonInterlaced)  || (IHDR->InterlaceMethod == PNG_InterlaceMethod_Interlaced)))
+	{
+		CloseBufferedFile(ThePNG);
+
+		return;
+	}
+
+	/*
+	 *  Read palette for an indexed image.
+	 */
+
+	if(IHDR->ColourType == PNG_ColourType_Indexed)
+	{
+		/*
+		 *  We need the palette first.
+		 */
+
+		if(!FindChunk(ThePNG, PNG_ChunkType_PLTE))
+		{
+			CloseBufferedFile(ThePNG);
+
+			return;
+		}
+
+		/*
+		 *  Read the chunk-header.
+		 */
+
+		CH = BufferedFileRead(ThePNG, PNG_ChunkHeader_Size);
+		if(!CH)
+		{
+			CloseBufferedFile(ThePNG);
+
+			return; 
+		}
+
+		/*
+		 *  PNG multi-byte types are in Big Endian
+		 */
+
+		ChunkHeaderLength = BigLong(CH->Length);
+		ChunkHeaderType   = BigLong(CH->Type);
+
+		/*
+		 *  Check if the chunk is a PLTE.
+		 */
+
+		if(!(ChunkHeaderType == PNG_ChunkType_PLTE))
+		{
+			CloseBufferedFile(ThePNG);
+
+			return; 
+		}
+
+		/*
+		 *  Check if Length is divisible by 3
+		 */
+
+		if(ChunkHeaderLength % 3)
+		{
+			CloseBufferedFile(ThePNG);
+
+			return;   
+		}
+
+		/*
+		 *  Read the raw palette data
+		 */
+
+		InPal = BufferedFileRead(ThePNG, ChunkHeaderLength);
+		if(!InPal)
+		{
+			CloseBufferedFile(ThePNG);
+
+			return; 
+		}
+
+		/*
+		 *  Read the CRC for the palette
+		 */
+
+		CRC = BufferedFileRead(ThePNG, PNG_ChunkCRC_Size);
+		if(!CRC)
+		{
+			CloseBufferedFile(ThePNG);
+
+			return; 
+		}
+
+		/*
+		 *  Set some default values.
+		 */
+
+		for(i = 0; i < 256; i++)
+		{
+			OutPal[i * Q3IMAGE_BYTESPERPIXEL + 0] = 0x00;
+			OutPal[i * Q3IMAGE_BYTESPERPIXEL + 1] = 0x00;
+			OutPal[i * Q3IMAGE_BYTESPERPIXEL + 2] = 0x00;
+			OutPal[i * Q3IMAGE_BYTESPERPIXEL + 3] = 0xFF;  
+		}
+
+		/*
+		 *  Convert to the Quake3 RGBA-format.
+		 */
+
+		for(i = 0; i < (ChunkHeaderLength / 3); i++)
+		{
+			OutPal[i * Q3IMAGE_BYTESPERPIXEL + 0] = InPal[i*3+0];
+			OutPal[i * Q3IMAGE_BYTESPERPIXEL + 1] = InPal[i*3+1];
+			OutPal[i * Q3IMAGE_BYTESPERPIXEL + 2] = InPal[i*3+2];
+			OutPal[i * Q3IMAGE_BYTESPERPIXEL + 3] = 0xFF;
+		}
+	}
+
+	/*
+	 *  transparency information is sometimes stored in a tRNS chunk
+	 */
+
+	/*
+	 *  Let's see if there is a tRNS chunk
+	 */
+
+	if(FindChunk(ThePNG, PNG_ChunkType_tRNS))
+	{
+		uint8_t *Trans;
+
+		/*
+		 *  Read the chunk-header.
+		 */
+
+		CH = BufferedFileRead(ThePNG, PNG_ChunkHeader_Size);
+		if(!CH)
+		{
+			CloseBufferedFile(ThePNG);
+
+			return; 
+		}
+
+		/*
+		 *  PNG multi-byte types are in Big Endian
+		 */
+
+		ChunkHeaderLength = BigLong(CH->Length);
+		ChunkHeaderType   = BigLong(CH->Type);
+
+		/*
+		 *  Check if the chunk is a tRNS.
+		 */
+
+		if(!(ChunkHeaderType == PNG_ChunkType_tRNS))
+		{
+			CloseBufferedFile(ThePNG);
+
+			return; 
+		}
+
+		/*
+		 *  Read the transparency information.
+		 */
+
+		Trans = BufferedFileRead(ThePNG, ChunkHeaderLength);
+		if(!Trans)
+		{
+			CloseBufferedFile(ThePNG);
+
+			return;  
+		}
+
+		/*
+		 *  Read the CRC.
+		 */
+
+		CRC = BufferedFileRead(ThePNG, PNG_ChunkCRC_Size);
+		if(!CRC)
+		{
+			CloseBufferedFile(ThePNG);
+
+			return; 
+		}
+
+		/*
+		 *  Only for Grey, True and Indexed ColourType should tRNS exist.
+		 */
+
+		switch(IHDR->ColourType)
+		{
+			case PNG_ColourType_Grey :
+			{
+				if(!ChunkHeaderLength == 2)
+				{
+					CloseBufferedFile(ThePNG);
+
+					return;    
+				}
+
+				HasTransparentColour = qtrue;
+
+				/*
+				 *  Grey can have one colour which is completely transparent.
+				 *  This colour is always stored in 16 bits.
+				 */
+
+				TransparentColour[0] = Trans[0];
+				TransparentColour[1] = Trans[1];
+
+				break;
+			}
+
+			case PNG_ColourType_True :
+			{
+				if(!ChunkHeaderLength == 6)
+				{
+					CloseBufferedFile(ThePNG);
+
+					return;    
+				}
+
+				HasTransparentColour = qtrue;
+
+				/*
+				 *  True can have one colour which is completely transparent.
+				 *  This colour is always stored in 16 bits.
+				 */
+
+				TransparentColour[0] = Trans[0];
+				TransparentColour[1] = Trans[1];
+				TransparentColour[2] = Trans[2];
+				TransparentColour[3] = Trans[3];
+				TransparentColour[4] = Trans[4];
+				TransparentColour[5] = Trans[5];
+
+				break;
+			}
+
+			case PNG_ColourType_Indexed :
+			{
+				/*
+				 *  Maximum of 256 one byte transparency entries.
+				 */
+
+				if(ChunkHeaderLength > 256)
+				{
+					CloseBufferedFile(ThePNG);
+
+					return;    
+				}
+
+				HasTransparentColour = qtrue;
+
+				/*
+				 *  alpha values for palette entries
+				 */
+
+				for(i = 0; i < ChunkHeaderLength; i++)
+				{
+					OutPal[i * Q3IMAGE_BYTESPERPIXEL + 3] = Trans[i];
+				}
+
+				break;
+			}
+
+			/*
+			 *  All other ColourTypes should not have tRNS chunks
+			 */
+
+			default :
+			{
+				CloseBufferedFile(ThePNG);
+
+				return;
+			}
+		} 
+	}
+
+	/*
+	 *  Rewind to the start of the file.
+	 */
+
+	if(!BufferedFileRewind(ThePNG, -1))
+	{
+		CloseBufferedFile(ThePNG);
+
+		return; 
+	}
+
+	/*
+	 *  Skip the signature
+	 */
+
+	if(!BufferedFileSkip(ThePNG, PNG_Signature_Size))
+	{
+		CloseBufferedFile(ThePNG);
+
+		return; 
+	}
+
+	/*
+	 *  Decompress all IDAT chunks
+	 */
+
+	DecompressedDataLength = DecompressIDATs(ThePNG, &DecompressedData);
+	if(!(DecompressedDataLength && DecompressedData))
+	{
+		CloseBufferedFile(ThePNG);
+
+		return;
+	}
+
+	/*
+	 *  Allocate output buffer.
+	 */
+
+	OutBuffer = ri.Malloc(IHDR_Width * IHDR_Height * Q3IMAGE_BYTESPERPIXEL); 
+	if(!OutBuffer)
+	{
+		ri.Free(DecompressedData); 
+		CloseBufferedFile(ThePNG);
+
+		return;  
+	}
+
+	/*
+	 *  Interlaced and Non-interlaced images need to be handled differently.
+	 */
+
+	switch(IHDR->InterlaceMethod)
+	{
+		case PNG_InterlaceMethod_NonInterlaced :
+		{
+			if(!DecodeImageNonInterlaced(IHDR, OutBuffer, DecompressedData, DecompressedDataLength, HasTransparentColour, TransparentColour, OutPal))
+			{
+				ri.Free(OutBuffer); 
+				ri.Free(DecompressedData); 
+				CloseBufferedFile(ThePNG);
+
+				return;
+			}
+
+			break;
+		}
+
+		case PNG_InterlaceMethod_Interlaced :
+		{
+			if(!DecodeImageInterlaced(IHDR, OutBuffer, DecompressedData, DecompressedDataLength, HasTransparentColour, TransparentColour, OutPal))
+			{
+				ri.Free(OutBuffer); 
+				ri.Free(DecompressedData); 
+				CloseBufferedFile(ThePNG);
+
+				return;
+			}
+
+			break;
+		}
+
+		default :
+		{
+			ri.Free(OutBuffer); 
+			ri.Free(DecompressedData); 
+			CloseBufferedFile(ThePNG);
+
+			return;
+		}
+	}
+
+	/*
+	 *  update the pointer to the image data
+	 */
+
+	*pic = OutBuffer;
+
+	/*
+	 *  Fill width and height.
+	 */
+
+	if(width)
+	{
+		*width = IHDR_Width;
+	}
+
+	if(height)
+	{
+		*height = IHDR_Height;
+	}
+
+	/*
+	 *  DecompressedData is not needed anymore.
+	 */
+
+	ri.Free(DecompressedData); 
+
+	/*
+	 *  We have all data, so close the file.
+	 */
+
+	CloseBufferedFile(ThePNG);
+}
diff --git a/src/renderercommon/tr_image_tga.c b/src/renderercommon/tr_image_tga.c
new file mode 100644
index 00000000..58951513
--- /dev/null
+++ b/src/renderercommon/tr_image_tga.c
@@ -0,0 +1,321 @@
+/*
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+Copyright (C) 2000-2009 Darklegion Development
+
+This file is part of Tremulous.
+
+Tremulous is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Tremulous is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Tremulous; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+#include "../renderergl1/tr_local.h"
+
+/*
+========================================================================
+
+TGA files are used for 24/32 bit images
+
+========================================================================
+*/
+
+typedef struct _TargaHeader {
+	unsigned char 	id_length, colormap_type, image_type;
+	unsigned short	colormap_index, colormap_length;
+	unsigned char	colormap_size;
+	unsigned short	x_origin, y_origin, width, height;
+	unsigned char	pixel_size, attributes;
+} TargaHeader;
+
+void R_LoadTGA ( const char *name, byte **pic, int *width, int *height)
+{
+	unsigned	columns, rows, numPixels;
+	byte	*pixbuf;
+	int		row, column;
+	byte	*buf_p;
+	byte	*end;
+	union {
+		byte *b;
+		void *v;
+	} buffer;
+	TargaHeader	targa_header;
+	byte		*targa_rgba;
+	int length;
+
+	*pic = NULL;
+
+	if(width)
+		*width = 0;
+	if(height)
+		*height = 0;
+
+	//
+	// load the file
+	//
+	length = ri.FS_ReadFile ( ( char * ) name, &buffer.v);
+	if (!buffer.b || length < 0) {
+		return;
+	}
+
+	if(length < 18)
+	{
+		ri.Error( ERR_DROP, "LoadTGA: header too short (%s)", name );
+	}
+
+	buf_p = buffer.b;
+	end = buffer.b + length;
+
+	targa_header.id_length = buf_p[0];
+	targa_header.colormap_type = buf_p[1];
+	targa_header.image_type = buf_p[2];
+	
+	memcpy(&targa_header.colormap_index, &buf_p[3], 2);
+	memcpy(&targa_header.colormap_length, &buf_p[5], 2);
+	targa_header.colormap_size = buf_p[7];
+	memcpy(&targa_header.x_origin, &buf_p[8], 2);
+	memcpy(&targa_header.y_origin, &buf_p[10], 2);
+	memcpy(&targa_header.width, &buf_p[12], 2);
+	memcpy(&targa_header.height, &buf_p[14], 2);
+	targa_header.pixel_size = buf_p[16];
+	targa_header.attributes = buf_p[17];
+
+	targa_header.colormap_index = LittleShort(targa_header.colormap_index);
+	targa_header.colormap_length = LittleShort(targa_header.colormap_length);
+	targa_header.x_origin = LittleShort(targa_header.x_origin);
+	targa_header.y_origin = LittleShort(targa_header.y_origin);
+	targa_header.width = LittleShort(targa_header.width);
+	targa_header.height = LittleShort(targa_header.height);
+
+	buf_p += 18;
+
+	if (targa_header.image_type!=2 
+		&& targa_header.image_type!=10
+		&& targa_header.image_type != 3 ) 
+	{
+		ri.Error (ERR_DROP, "LoadTGA: Only type 2 (RGB), 3 (gray), and 10 (RGB) TGA images supported");
+	}
+
+	if ( targa_header.colormap_type != 0 )
+	{
+		ri.Error( ERR_DROP, "LoadTGA: colormaps not supported" );
+	}
+
+	if ( ( targa_header.pixel_size != 32 && targa_header.pixel_size != 24 ) && targa_header.image_type != 3 )
+	{
+		ri.Error (ERR_DROP, "LoadTGA: Only 32 or 24 bit images supported (no colormaps)");
+	}
+
+	columns = targa_header.width;
+	rows = targa_header.height;
+	numPixels = columns * rows * 4;
+
+	if(!columns || !rows || numPixels > 0x7FFFFFFF || numPixels / columns / 4 != rows)
+	{
+		ri.Error (ERR_DROP, "LoadTGA: %s has an invalid image size", name);
+	}
+
+
+	targa_rgba = ri.Malloc (numPixels);
+
+	if (targa_header.id_length != 0)
+	{
+		if (buf_p + targa_header.id_length > end)
+			ri.Error( ERR_DROP, "LoadTGA: header too short (%s)", name );
+
+		buf_p += targa_header.id_length;  // skip TARGA image comment
+	}
+	
+	if ( targa_header.image_type==2 || targa_header.image_type == 3 )
+	{ 
+		if(buf_p + columns*rows*targa_header.pixel_size/8 > end)
+		{
+			ri.Error (ERR_DROP, "LoadTGA: file truncated (%s)", name);
+		}
+
+		// Uncompressed RGB or gray scale image
+		for(row=rows-1; row>=0; row--) 
+		{
+			pixbuf = targa_rgba + row*columns*4;
+			for(column=0; column<columns; column++) 
+			{
+				unsigned char red,green,blue,alphabyte;
+				switch (targa_header.pixel_size) 
+				{
+					
+				case 8:
+					blue = *buf_p++;
+					green = blue;
+					red = blue;
+					*pixbuf++ = red;
+					*pixbuf++ = green;
+					*pixbuf++ = blue;
+					*pixbuf++ = 255;
+					break;
+
+				case 24:
+					blue = *buf_p++;
+					green = *buf_p++;
+					red = *buf_p++;
+					*pixbuf++ = red;
+					*pixbuf++ = green;
+					*pixbuf++ = blue;
+					*pixbuf++ = 255;
+					break;
+				case 32:
+					blue = *buf_p++;
+					green = *buf_p++;
+					red = *buf_p++;
+					alphabyte = *buf_p++;
+					*pixbuf++ = red;
+					*pixbuf++ = green;
+					*pixbuf++ = blue;
+					*pixbuf++ = alphabyte;
+					break;
+				default:
+					ri.Error( ERR_DROP, "LoadTGA: illegal pixel_size '%d' in file '%s'", targa_header.pixel_size, name );
+					break;
+				}
+			}
+		}
+	}
+	else if (targa_header.image_type==10) {   // Runlength encoded RGB images
+		unsigned char red,green,blue,alphabyte,packetHeader,packetSize,j;
+
+		red = 0;
+		green = 0;
+		blue = 0;
+		alphabyte = 0xff;
+
+		for(row=rows-1; row>=0; row--) {
+			pixbuf = targa_rgba + row*columns*4;
+			for(column=0; column<columns; ) {
+				if(buf_p + 1 > end)
+					ri.Error (ERR_DROP, "LoadTGA: file truncated (%s)", name);
+				packetHeader= *buf_p++;
+				packetSize = 1 + (packetHeader & 0x7f);
+				if (packetHeader & 0x80) {        // run-length packet
+					if(buf_p + targa_header.pixel_size/8 > end)
+						ri.Error (ERR_DROP, "LoadTGA: file truncated (%s)", name);
+					switch (targa_header.pixel_size) {
+						case 24:
+								blue = *buf_p++;
+								green = *buf_p++;
+								red = *buf_p++;
+								alphabyte = 255;
+								break;
+						case 32:
+								blue = *buf_p++;
+								green = *buf_p++;
+								red = *buf_p++;
+								alphabyte = *buf_p++;
+								break;
+						default:
+							ri.Error( ERR_DROP, "LoadTGA: illegal pixel_size '%d' in file '%s'", targa_header.pixel_size, name );
+							break;
+					}
+	
+					for(j=0;j<packetSize;j++) {
+						*pixbuf++=red;
+						*pixbuf++=green;
+						*pixbuf++=blue;
+						*pixbuf++=alphabyte;
+						column++;
+						if (column==columns) { // run spans across rows
+							column=0;
+							if (row>0)
+								row--;
+							else
+								goto breakOut;
+							pixbuf = targa_rgba + row*columns*4;
+						}
+					}
+				}
+				else {                            // non run-length packet
+
+					if(buf_p + targa_header.pixel_size/8*packetSize > end)
+						ri.Error (ERR_DROP, "LoadTGA: file truncated (%s)", name);
+					for(j=0;j<packetSize;j++) {
+						switch (targa_header.pixel_size) {
+							case 24:
+									blue = *buf_p++;
+									green = *buf_p++;
+									red = *buf_p++;
+									*pixbuf++ = red;
+									*pixbuf++ = green;
+									*pixbuf++ = blue;
+									*pixbuf++ = 255;
+									break;
+							case 32:
+									blue = *buf_p++;
+									green = *buf_p++;
+									red = *buf_p++;
+									alphabyte = *buf_p++;
+									*pixbuf++ = red;
+									*pixbuf++ = green;
+									*pixbuf++ = blue;
+									*pixbuf++ = alphabyte;
+									break;
+							default:
+								ri.Error( ERR_DROP, "LoadTGA: illegal pixel_size '%d' in file '%s'", targa_header.pixel_size, name );
+								break;
+						}
+						column++;
+						if (column==columns) { // pixel packet run spans across rows
+							column=0;
+							if (row>0)
+								row--;
+							else
+								goto breakOut;
+							pixbuf = targa_rgba + row*columns*4;
+						}						
+					}
+				}
+			}
+			breakOut:;
+		}
+	}
+
+#if 0 
+  // TTimo: this is the chunk of code to ensure a behavior that meets TGA specs 
+  // bit 5 set => top-down
+  if (targa_header.attributes & 0x20) {
+    unsigned char *flip = (unsigned char*)malloc (columns*4);
+    unsigned char *src, *dst;
+
+    for (row = 0; row < rows/2; row++) {
+      src = targa_rgba + row * 4 * columns;
+      dst = targa_rgba + (rows - row - 1) * 4 * columns;
+
+      memcpy (flip, src, columns*4);
+      memcpy (src, dst, columns*4);
+      memcpy (dst, flip, columns*4);
+    }
+    free (flip);
+  }
+#endif
+  // instead we just print a warning
+  if (targa_header.attributes & 0x20) {
+    ri.Printf( PRINT_WARNING, "WARNING: '%s' TGA file header declares top-down image, ignoring\n", name);
+  }
+
+  if (width)
+	  *width = columns;
+  if (height)
+	  *height = rows;
+
+  *pic = targa_rgba;
+
+  ri.FS_FreeFile (buffer.v);
+}
diff --git a/src/renderercommon/tr_noise.c b/src/renderercommon/tr_noise.c
new file mode 100644
index 00000000..9bd04e91
--- /dev/null
+++ b/src/renderercommon/tr_noise.c
@@ -0,0 +1,92 @@
+/*
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+Copyright (C) 2000-2009 Darklegion Development
+
+This file is part of Tremulous.
+
+Tremulous is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Tremulous is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Tremulous; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+// tr_noise.c
+#include "../renderergl1/tr_local.h"
+
+#define NOISE_SIZE 256
+#define NOISE_MASK ( NOISE_SIZE - 1 )
+
+#define VAL( a ) s_noise_perm[ ( a ) & ( NOISE_MASK )]
+#define INDEX( x, y, z, t ) VAL( x + VAL( y + VAL( z + VAL( t ) ) ) )
+
+static float s_noise_table[NOISE_SIZE];
+static int s_noise_perm[NOISE_SIZE];
+
+static float GetNoiseValue( int x, int y, int z, int t )
+{
+	int index = INDEX( ( int ) x, ( int ) y, ( int ) z, ( int ) t );
+
+	return s_noise_table[index];
+}
+
+void R_NoiseInit( void )
+{
+	int i;
+
+	for ( i = 0; i < NOISE_SIZE; i++ )
+	{
+		s_noise_table[i] = ( float ) ( ( ( rand() / ( float ) RAND_MAX ) * 2.0 - 1.0 ) );
+		s_noise_perm[i] = ( unsigned char ) ( rand() / ( float ) RAND_MAX * 255 );
+	}
+}
+
+float R_NoiseGet4f( float x, float y, float z, float t )
+{
+	int i;
+	int ix, iy, iz, it;
+	float fx, fy, fz, ft;
+	float front[4];
+	float back[4];
+	float fvalue, bvalue, value[2], finalvalue;
+
+	ix = ( int ) floor( x );
+	fx = x - ix;
+	iy = ( int ) floor( y );
+	fy = y - iy;
+	iz = ( int ) floor( z );
+	fz = z - iz;
+	it = ( int ) floor( t );
+	ft = t - it;
+
+	for ( i = 0; i < 2; i++ )
+	{
+		front[0] = GetNoiseValue( ix, iy, iz, it + i );
+		front[1] = GetNoiseValue( ix+1, iy, iz, it + i );
+		front[2] = GetNoiseValue( ix, iy+1, iz, it + i );
+		front[3] = GetNoiseValue( ix+1, iy+1, iz, it + i );
+
+		back[0] = GetNoiseValue( ix, iy, iz + 1, it + i );
+		back[1] = GetNoiseValue( ix+1, iy, iz + 1, it + i );
+		back[2] = GetNoiseValue( ix, iy+1, iz + 1, it + i );
+		back[3] = GetNoiseValue( ix+1, iy+1, iz + 1, it + i );
+
+		fvalue = LERP( LERP( front[0], front[1], fx ), LERP( front[2], front[3], fx ), fy );
+		bvalue = LERP( LERP( back[0], back[1], fx ), LERP( back[2], back[3], fx ), fy );
+
+		value[i] = LERP( fvalue, bvalue, fz );
+	}
+
+	finalvalue = LERP( value[0], value[1], ft );
+
+	return finalvalue;
+}