text: /*
  	Jonathan Dummer
  	2007-07-26-10.36
  
  	Simple OpenGL Image Library
  
  	Public Domain
  	using Sean Barret's stb_image as a base
  
  	Thanks to:
  	* Sean Barret - for the awesome stb_image
  	* Dan Venkitachalam - for finding some non-compliant DDS files, and patching some explicit casts
  	* everybody at gamedev.net
  */
  
  #define SOIL_CHECK_FOR_GL_ERRORS 0
  
  #ifdef WIN32
  	#define WIN32_LEAN_AND_MEAN
  	#include <windows.h>
  	#include <wingdi.h>
  	#include <GL/gl.h>
  #elif defined(__APPLE__) || defined(__APPLE_CC__)
  	/*	I can't test this Apple stuff!	*/
  	#include <OpenGL/gl.h>
  	#include <Carbon/Carbon.h>
  	#define APIENTRY
  #else
  	#include <GL/gl.h>
  	#include <GL/glx.h>
  #endif
  
  #include "SOIL.h"
  #include "stb_image_aug.h"
  #include "image_helper.h"
  #include "image_DXT.h"
  
  #include <stdlib.h>
  #include <string.h>
  
  /*	error reporting	*/
  char *result_string_pointer = "SOIL initialized";
  
  /*	for loading cube maps	*/
  enum{
  	SOIL_CAPABILITY_UNKNOWN = -1,
  	SOIL_CAPABILITY_NONE = 0,
  	SOIL_CAPABILITY_PRESENT = 1
  };
  static int has_cubemap_capability = SOIL_CAPABILITY_UNKNOWN;
  int query_cubemap_capability( void );
  #define SOIL_TEXTURE_WRAP_R					0x8072
  #define SOIL_CLAMP_TO_EDGE					0x812F
  #define SOIL_NORMAL_MAP						0x8511
  #define SOIL_REFLECTION_MAP					0x8512
  #define SOIL_TEXTURE_CUBE_MAP				0x8513
  #define SOIL_TEXTURE_BINDING_CUBE_MAP		0x8514
  #define SOIL_TEXTURE_CUBE_MAP_POSITIVE_X	0x8515
  #define SOIL_TEXTURE_CUBE_MAP_NEGATIVE_X	0x8516
  #define SOIL_TEXTURE_CUBE_MAP_POSITIVE_Y	0x8517
  #define SOIL_TEXTURE_CUBE_MAP_NEGATIVE_Y	0x8518
  #define SOIL_TEXTURE_CUBE_MAP_POSITIVE_Z	0x8519
  #define SOIL_TEXTURE_CUBE_MAP_NEGATIVE_Z	0x851A
  #define SOIL_PROXY_TEXTURE_CUBE_MAP			0x851B
  #define SOIL_MAX_CUBE_MAP_TEXTURE_SIZE		0x851C
  /*	for non-power-of-two texture	*/
  static int has_NPOT_capability = SOIL_CAPABILITY_UNKNOWN;
  int query_NPOT_capability( void );
  /*	for texture rectangles	*/
  static int has_tex_rectangle_capability = SOIL_CAPABILITY_UNKNOWN;
  int query_tex_rectangle_capability( void );
  #define SOIL_TEXTURE_RECTANGLE_ARB				0x84F5
  #define SOIL_MAX_RECTANGLE_TEXTURE_SIZE_ARB		0x84F8
  /*	for using DXT compression	*/
  static int has_DXT_capability = SOIL_CAPABILITY_UNKNOWN;
  int query_DXT_capability( void );
  #define SOIL_RGB_S3TC_DXT1		0x83F0
  #define SOIL_RGBA_S3TC_DXT1		0x83F1
  #define SOIL_RGBA_S3TC_DXT3		0x83F2
  #define SOIL_RGBA_S3TC_DXT5		0x83F3
  typedef void (APIENTRY * P_SOIL_GLCOMPRESSEDTEXIMAGE2DPROC) (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const GLvoid * data);
  P_SOIL_GLCOMPRESSEDTEXIMAGE2DPROC soilGlCompressedTexImage2D = NULL;
  unsigned int SOIL_direct_load_DDS(
  		const char *filename,
  		unsigned int reuse_texture_ID,
  		int flags,
  		int loading_as_cubemap );
  unsigned int SOIL_direct_load_DDS_from_memory(
  		const unsigned char *const buffer,
  		int buffer_length,
  		unsigned int reuse_texture_ID,
  		int flags,
  		int loading_as_cubemap );
  /*	other functions	*/
  unsigned int
  	SOIL_internal_create_OGL_texture
  	(
  		const unsigned char *const data,
  		int width, int height, int channels,
  		unsigned int reuse_texture_ID,
  		unsigned int flags,
  		unsigned int opengl_texture_type,
  		unsigned int opengl_texture_target,
  		unsigned int texture_check_size_enum
  	);
  
  /*	and the code magic begins here [8^)	*/
  unsigned int
  	SOIL_load_OGL_texture
  	(
  		const char *filename,
  		int force_channels,
  		unsigned int reuse_texture_ID,
  		unsigned int flags
  	)
  {
  	/*	variables	*/
  	unsigned char* img;
  	int width, height, channels;
  	unsigned int tex_id;
  	/*	does the user want direct uploading of the image as a DDS file?	*/
  	if( flags & SOIL_FLAG_DDS_LOAD_DIRECT )
  	{
  		/*	1st try direct loading of the image as a DDS file
  			note: direct uploading will only load what is in the
  			DDS file, no MIPmaps will be generated, the image will
  			not be flipped, etc.	*/
  		tex_id = SOIL_direct_load_DDS( filename, reuse_texture_ID, flags, 0 );
  		if( tex_id )
  		{
  			/*	hey, it worked!!	*/
  			return tex_id;
  		}
  	}
  	/*	try to load the image	*/
  	img = SOIL_load_image( filename, &width, &height, &channels, force_channels );
  	/*	channels holds the original number of channels, which may have been forced	*/
  	if( (force_channels >= 1) && (force_channels <= 4) )
  	{
  		channels = force_channels;
  	}
  	if( NULL == img )
  	{
  		/*	image loading failed	*/
  		result_string_pointer = stbi_failure_reason();
  		return 0;
  	}
  	/*	OK, make it a texture!	*/
  	tex_id = SOIL_internal_create_OGL_texture(
  			img, width, height, channels,
  			reuse_texture_ID, flags,
  			GL_TEXTURE_2D, GL_TEXTURE_2D,
  			GL_MAX_TEXTURE_SIZE );
  	/*	and nuke the image data	*/
  	SOIL_free_image_data( img );
  	/*	and return the handle, such as it is	*/
  	return tex_id;
  }
  
  unsigned int
  	SOIL_load_OGL_HDR_texture
  	(
  		const char *filename,
  		int fake_HDR_format,
  		int rescale_to_max,
  		unsigned int reuse_texture_ID,
  		unsigned int flags
  	)
  {
  	/*	variables	*/
  	unsigned char* img;
  	int width, height, channels;
  	unsigned int tex_id;
  	/*	no direct uploading of the image as a DDS file	*/
  	/* error check */
  	if( (fake_HDR_format != SOIL_HDR_RGBE) &&
  		(fake_HDR_format != SOIL_HDR_RGBdivA) &&
  		(fake_HDR_format != SOIL_HDR_RGBdivA2) )
  	{
  		result_string_pointer = "Invalid fake HDR format specified";
  		return 0;
  	}
  	/*	try to load the image (only the HDR type) */
  	img = stbi_hdr_load_rgbe( filename, &width, &height, &channels, 4 );
  	/*	channels holds the original number of channels, which may have been forced	*/
  	if( NULL == img )
  	{
  		/*	image loading failed	*/
  		result_string_pointer = stbi_failure_reason();
  		return 0;
  	}
  	/* the load worked, do I need to convert it? */
  	if( fake_HDR_format == SOIL_HDR_RGBdivA )
  	{
  		RGBE_to_RGBdivA( img, width, height, rescale_to_max );
  	} else if( fake_HDR_format == SOIL_HDR_RGBdivA2 )
  	{
  		RGBE_to_RGBdivA2( img, width, height, rescale_to_max );
  	}
  	/*	OK, make it a texture!	*/
  	tex_id = SOIL_internal_create_OGL_texture(
  			img, width, height, channels,
  			reuse_texture_ID, flags,
  			GL_TEXTURE_2D, GL_TEXTURE_2D,
  			GL_MAX_TEXTURE_SIZE );
  	/*	and nuke the image data	*/
  	SOIL_free_image_data( img );
  	/*	and return the handle, such as it is	*/
  	return tex_id;
  }
  
  unsigned int
  	SOIL_load_OGL_texture_from_memory
  	(
  		const unsigned char *const buffer,
  		int buffer_length,
  		int force_channels,
  		unsigned int reuse_texture_ID,
  		unsigned int flags
  	)
  {
  	/*	variables	*/
  	unsigned char* img;
  	int width, height, channels;
  	unsigned int tex_id;
  	/*	does the user want direct uploading of the image as a DDS file?	*/
  	if( flags & SOIL_FLAG_DDS_LOAD_DIRECT )
  	{
  		/*	1st try direct loading of the image as a DDS file
  			note: direct uploading will only load what is in the
  			DDS file, no MIPmaps will be generated, the image will
  			not be flipped, etc.	*/
  		tex_id = SOIL_direct_load_DDS_from_memory(
  				buffer, buffer_length,
  				reuse_texture_ID, flags, 0 );
  		if( tex_id )
  		{
  			/*	hey, it worked!!	*/
  			return tex_id;
  		}
  	}
  	/*	try to load the image	*/
  	img = SOIL_load_image_from_memory(
  					buffer, buffer_length,
  					&width, &height, &channels,
  					force_channels );
  	/*	channels holds the original number of channels, which may have been forced	*/
  	if( (force_channels >= 1) && (force_channels <= 4) )
  	{
  		channels = force_channels;
  	}
  	if( NULL == img )
  	{
  		/*	image loading failed	*/
  		result_string_pointer = stbi_failure_reason();
  		return 0;
  	}
  	/*	OK, make it a texture!	*/
  	tex_id = SOIL_internal_create_OGL_texture(
  			img, width, height, channels,
  			reuse_texture_ID, flags,
  			GL_TEXTURE_2D, GL_TEXTURE_2D,
  			GL_MAX_TEXTURE_SIZE );
  	/*	and nuke the image data	*/
  	SOIL_free_image_data( img );
  	/*	and return the handle, such as it is	*/
  	return tex_id;
  }
  
  unsigned int
  	SOIL_load_OGL_cubemap
  	(
  		const char *x_pos_file,
  		const char *x_neg_file,
  		const char *y_pos_file,
  		const char *y_neg_file,
  		const char *z_pos_file,
  		const char *z_neg_file,
  		int force_channels,
  		unsigned int reuse_texture_ID,
  		unsigned int flags
  	)
  {
  	/*	variables	*/
  	unsigned char* img;
  	int width, height, channels;
  	unsigned int tex_id;
  	/*	error checking	*/
  	if( (x_pos_file == NULL) ||
  		(x_neg_file == NULL) ||
  		(y_pos_file == NULL) ||
  		(y_neg_file == NULL) ||
  		(z_pos_file == NULL) ||
  		(z_neg_file == NULL) )
  	{
  		result_string_pointer = "Invalid cube map files list";
  		return 0;
  	}
  	/*	capability checking	*/
  	if( query_cubemap_capability() != SOIL_CAPABILITY_PRESENT )
  	{
  		result_string_pointer = "No cube map capability present";
  		return 0;
  	}
  	/*	1st face: try to load the image	*/
  	img = SOIL_load_image( x_pos_file, &width, &height, &channels, force_channels );
  	/*	channels holds the original number of channels, which may have been forced	*/
  	if( (force_channels >= 1) && (force_channels <= 4) )
  	{
  		channels = force_channels;
  	}
  	if( NULL == img )
  	{
  		/*	image loading failed	*/
  		result_string_pointer = stbi_failure_reason();
  		return 0;
  	}
  	/*	upload the texture, and create a texture ID if necessary	*/
  	tex_id = SOIL_internal_create_OGL_texture(
  			img, width, height, channels,
  			reuse_texture_ID, flags,
  			SOIL_TEXTURE_CUBE_MAP, SOIL_TEXTURE_CUBE_MAP_POSITIVE_X,
  			SOIL_MAX_CUBE_MAP_TEXTURE_SIZE );
  	/*	and nuke the image data	*/
  	SOIL_free_image_data( img );
  	/*	continue?	*/
  	if( tex_id != 0 )
  	{
  		/*	1st face: try to load the image	*/
  		img = SOIL_load_image( x_neg_file, &width, &height, &channels, force_channels );
  		/*	channels holds the original number of channels, which may have been forced	*/
  		if( (force_channels >= 1) && (force_channels <= 4) )
  		{
  			channels = force_channels;
  		}
  		if( NULL == img )
  		{
  			/*	image loading failed	*/
  			result_string_pointer = stbi_failure_reason();
  			return 0;
  		}
  		/*	upload the texture, but reuse the assigned texture ID	*/
  		tex_id = SOIL_internal_create_OGL_texture(
  				img, width, height, channels,
  				tex_id, flags,
  				SOIL_TEXTURE_CUBE_MAP, SOIL_TEXTURE_CUBE_MAP_NEGATIVE_X,
  				SOIL_MAX_CUBE_MAP_TEXTURE_SIZE );
  		/*	and nuke the image data	*/
  		SOIL_free_image_data( img );
  	}
  	/*	continue?	*/
  	if( tex_id != 0 )
  	{
  		/*	1st face: try to load the image	*/
  		img = SOIL_load_image( y_pos_file, &width, &height, &channels, force_channels );
  		/*	channels holds the original number of channels, which may have been forced	*/
  		if( (force_channels >= 1) && (force_channels <= 4) )
  		{
  			channels = force_channels;
  		}
  		if( NULL == img )
  		{
  			/*	image loading failed	*/
  			result_string_pointer = stbi_failure_reason();
  			return 0;
  		}
  		/*	upload the texture, but reuse the assigned texture ID	*/
  		tex_id = SOIL_internal_create_OGL_texture(
  				img, width, height, channels,
  				tex_id, flags,
  				SOIL_TEXTURE_CUBE_MAP, SOIL_TEXTURE_CUBE_MAP_POSITIVE_Y,
  				SOIL_MAX_CUBE_MAP_TEXTURE_SIZE );
  		/*	and nuke the image data	*/
  		SOIL_free_image_data( img );
  	}
  	/*	continue?	*/
  	if( tex_id != 0 )
  	{
  		/*	1st face: try to load the image	*/
  		img = SOIL_load_image( y_neg_file, &width, &height, &channels, force_channels );
  		/*	channels holds the original number of channels, which may have been forced	*/
  		if( (force_channels >= 1) && (force_channels <= 4) )
  		{
  			channels = force_channels;
  		}
  		if( NULL == img )
  		{
  			/*	image loading failed	*/
  			result_string_pointer = stbi_failure_reason();
  			return 0;
  		}
  		/*	upload the texture, but reuse the assigned texture ID	*/
  		tex_id = SOIL_internal_create_OGL_texture(
  				img, width, height, channels,
  				tex_id, flags,
  				SOIL_TEXTURE_CUBE_MAP, SOIL_TEXTURE_CUBE_MAP_NEGATIVE_Y,
  				SOIL_MAX_CUBE_MAP_TEXTURE_SIZE );
  		/*	and nuke the image data	*/
  		SOIL_free_image_data( img );
  	}
  	/*	continue?	*/
  	if( tex_id != 0 )
  	{
  		/*	1st face: try to load the image	*/
  		img = SOIL_load_image( z_pos_file, &width, &height, &channels, force_channels );
  		/*	channels holds the original number of channels, which may have been forced	*/
  		if( (force_channels >= 1) && (force_channels <= 4) )
  		{
  			channels = force_channels;
  		}
  		if( NULL == img )
  		{
  			/*	image loading failed	*/
  			result_string_pointer = stbi_failure_reason();
  			return 0;
  		}
  		/*	upload the texture, but reuse the assigned texture ID	*/
  		tex_id = SOIL_internal_create_OGL_texture(
  				img, width, height, channels,
  				tex_id, flags,
  				SOIL_TEXTURE_CUBE_MAP, SOIL_TEXTURE_CUBE_MAP_POSITIVE_Z,
  				SOIL_MAX_CUBE_MAP_TEXTURE_SIZE );
  		/*	and nuke the image data	*/
  		SOIL_free_image_data( img );
  	}
  	/*	continue?	*/
  	if( tex_id != 0 )
  	{
  		/*	1st face: try to load the image	*/
  		img = SOIL_load_image( z_neg_file, &width, &height, &channels, force_channels );
  		/*	channels holds the original number of channels, which may have been forced	*/
  		if( (force_channels >= 1) && (force_channels <= 4) )
  		{
  			channels = force_channels;
  		}
  		if( NULL == img )
  		{
  			/*	image loading failed	*/
  			result_string_pointer = stbi_failure_reason();
  			return 0;
  		}
  		/*	upload the texture, but reuse the assigned texture ID	*/
  		tex_id = SOIL_internal_create_OGL_texture(
  				img, width, height, channels,
  				tex_id, flags,
  				SOIL_TEXTURE_CUBE_MAP, SOIL_TEXTURE_CUBE_MAP_NEGATIVE_Z,
  				SOIL_MAX_CUBE_MAP_TEXTURE_SIZE );
  		/*	and nuke the image data	*/
  		SOIL_free_image_data( img );
  	}
  	/*	and return the handle, such as it is	*/
  	return tex_id;
  }
  
  unsigned int
  	SOIL_load_OGL_cubemap_from_memory
  	(
  		const unsigned char *const x_pos_buffer,
  		int x_pos_buffer_length,
  		const unsigned char *const x_neg_buffer,
  		int x_neg_buffer_length,
  		const unsigned char *const y_pos_buffer,
  		int y_pos_buffer_length,
  		const unsigned char *const y_neg_buffer,
  		int y_neg_buffer_length,
  		const unsigned char *const z_pos_buffer,
  		int z_pos_buffer_length,
  		const unsigned char *const z_neg_buffer,
  		int z_neg_buffer_length,
  		int force_channels,
  		unsigned int reuse_texture_ID,
  		unsigned int flags
  	)
  {
  	/*	variables	*/
  	unsigned char* img;
  	int width, height, channels;
  	unsigned int tex_id;
  	/*	error checking	*/
  	if( (x_pos_buffer == NULL) ||
  		(x_neg_buffer == NULL) ||
  		(y_pos_buffer == NULL) ||
  		(y_neg_buffer == NULL) ||
  		(z_pos_buffer == NULL) ||
  		(z_neg_buffer == NULL) )
  	{
  		result_string_pointer = "Invalid cube map buffers list";
  		return 0;
  	}
  	/*	capability checking	*/
  	if( query_cubemap_capability() != SOIL_CAPABILITY_PRESENT )
  	{
  		result_string_pointer = "No cube map capability present";
  		return 0;
  	}
  	/*	1st face: try to load the image	*/
  	img = SOIL_load_image_from_memory(
  			x_pos_buffer, x_pos_buffer_length,
  			&width, &height, &channels, force_channels );
  	/*	channels holds the original number of channels, which may have been forced	*/
  	if( (force_channels >= 1) && (force_channels <= 4) )
  	{
  		channels = force_channels;
  	}
  	if( NULL == img )
  	{
  		/*	image loading failed	*/
  		result_string_pointer = stbi_failure_reason();
  		return 0;
  	}
  	/*	upload the texture, and create a texture ID if necessary	*/
  	tex_id = SOIL_internal_create_OGL_texture(
  			img, width, height, channels,
  			reuse_texture_ID, flags,
  			SOIL_TEXTURE_CUBE_MAP, SOIL_TEXTURE_CUBE_MAP_POSITIVE_X,
  			SOIL_MAX_CUBE_MAP_TEXTURE_SIZE );
  	/*	and nuke the image data	*/
  	SOIL_free_image_data( img );
  	/*	continue?	*/
  	if( tex_id != 0 )
  	{
  		/*	1st face: try to load the image	*/
  		img = SOIL_load_image_from_memory(
  				x_neg_buffer, x_neg_buffer_length,
  				&width, &height, &channels, force_channels );
  		/*	channels holds the original number of channels, which may have been forced	*/
  		if( (force_channels >= 1) && (force_channels <= 4) )
  		{
  			channels = force_channels;
  		}
  		if( NULL == img )
  		{
  			/*	image loading failed	*/
  			result_string_pointer = stbi_failure_reason();
  			return 0;
  		}
  		/*	upload the texture, but reuse the assigned texture ID	*/
  		tex_id = SOIL_internal_create_OGL_texture(
  				img, width, height, channels,
  				tex_id, flags,
  				SOIL_TEXTURE_CUBE_MAP, SOIL_TEXTURE_CUBE_MAP_NEGATIVE_X,
  				SOIL_MAX_CUBE_MAP_TEXTURE_SIZE );
  		/*	and nuke the image data	*/
  		SOIL_free_image_data( img );
  	}
  	/*	continue?	*/
  	if( tex_id != 0 )
  	{
  		/*	1st face: try to load the image	*/
  		img = SOIL_load_image_from_memory(
  				y_pos_buffer, y_pos_buffer_length,
  				&width, &height, &channels, force_channels );
  		/*	channels holds the original number of channels, which may have been forced	*/
  		if( (force_channels >= 1) && (force_channels <= 4) )
  		{
  			channels = force_channels;
  		}
  		if( NULL == img )
  		{
  			/*	image loading failed	*/
  			result_string_pointer = stbi_failure_reason();
  			return 0;
  		}
  		/*	upload the texture, but reuse the assigned texture ID	*/
  		tex_id = SOIL_internal_create_OGL_texture(
  				img, width, height, channels,
  				tex_id, flags,
  				SOIL_TEXTURE_CUBE_MAP, SOIL_TEXTURE_CUBE_MAP_POSITIVE_Y,
  				SOIL_MAX_CUBE_MAP_TEXTURE_SIZE );
  		/*	and nuke the image data	*/
  		SOIL_free_image_data( img );
  	}
  	/*	continue?	*/
  	if( tex_id != 0 )
  	{
  		/*	1st face: try to load the image	*/
  		img = SOIL_load_image_from_memory(
  				y_neg_buffer, y_neg_buffer_length,
  				&width, &height, &channels, force_channels );
  		/*	channels holds the original number of channels, which may have been forced	*/
  		if( (force_channels >= 1) && (force_channels <= 4) )
  		{
  			channels = force_channels;
  		}
  		if( NULL == img )
  		{
  			/*	image loading failed	*/
  			result_string_pointer = stbi_failure_reason();
  			return 0;
  		}
  		/*	upload the texture, but reuse the assigned texture ID	*/
  		tex_id = SOIL_internal_create_OGL_texture(
  				img, width, height, channels,
  				tex_id, flags,
  				SOIL_TEXTURE_CUBE_MAP, SOIL_TEXTURE_CUBE_MAP_NEGATIVE_Y,
  				SOIL_MAX_CUBE_MAP_TEXTURE_SIZE );
  		/*	and nuke the image data	*/
  		SOIL_free_image_data( img );
  	}
  	/*	continue?	*/
  	if( tex_id != 0 )
  	{
  		/*	1st face: try to load the image	*/
  		img = SOIL_load_image_from_memory(
  				z_pos_buffer, z_pos_buffer_length,
  				&width, &height, &channels, force_channels );
  		/*	channels holds the original number of channels, which may have been forced	*/
  		if( (force_channels >= 1) && (force_channels <= 4) )
  		{
  			channels = force_channels;
  		}
  		if( NULL == img )
  		{
  			/*	image loading failed	*/
  			result_string_pointer = stbi_failure_reason();
  			return 0;
  		}
  		/*	upload the texture, but reuse the assigned texture ID	*/
  		tex_id = SOIL_internal_create_OGL_texture(
  				img, width, height, channels,
  				tex_id, flags,
  				SOIL_TEXTURE_CUBE_MAP, SOIL_TEXTURE_CUBE_MAP_POSITIVE_Z,
  				SOIL_MAX_CUBE_MAP_TEXTURE_SIZE );
  		/*	and nuke the image data	*/
  		SOIL_free_image_data( img );
  	}
  	/*	continue?	*/
  	if( tex_id != 0 )
  	{
  		/*	1st face: try to load the image	*/
  		img = SOIL_load_image_from_memory(
  				z_neg_buffer, z_neg_buffer_length,
  				&width, &height, &channels, force_channels );
  		/*	channels holds the original number of channels, which may have been forced	*/
  		if( (force_channels >= 1) && (force_channels <= 4) )
  		{
  			channels = force_channels;
  		}
  		if( NULL == img )
  		{
  			/*	image loading failed	*/
  			result_string_pointer = stbi_failure_reason();
  			return 0;
  		}
  		/*	upload the texture, but reuse the assigned texture ID	*/
  		tex_id = SOIL_internal_create_OGL_texture(
  				img, width, height, channels,
  				tex_id, flags,
  				SOIL_TEXTURE_CUBE_MAP, SOIL_TEXTURE_CUBE_MAP_NEGATIVE_Z,
  				SOIL_MAX_CUBE_MAP_TEXTURE_SIZE );
  		/*	and nuke the image data	*/
  		SOIL_free_image_data( img );
  	}
  	/*	and return the handle, such as it is	*/
  	return tex_id;
  }
  
  unsigned int
  	SOIL_load_OGL_single_cubemap
  	(
  		const char *filename,
  		const char face_order[6],
  		int force_channels,
  		unsigned int reuse_texture_ID,
  		unsigned int flags
  	)
  {
  	/*	variables	*/
  	unsigned char* img;
  	int width, height, channels, i;
  	unsigned int tex_id = 0;
  	/*	error checking	*/
  	if( filename == NULL )
  	{
  		result_string_pointer = "Invalid single cube map file name";
  		return 0;
  	}
  	/*	does the user want direct uploading of the image as a DDS file?	*/
  	if( flags & SOIL_FLAG_DDS_LOAD_DIRECT )
  	{
  		/*	1st try direct loading of the image as a DDS file
  			note: direct uploading will only load what is in the
  			DDS file, no MIPmaps will be generated, the image will
  			not be flipped, etc.	*/
  		tex_id = SOIL_direct_load_DDS( filename, reuse_texture_ID, flags, 1 );
  		if( tex_id )
  		{
  			/*	hey, it worked!!	*/
  			return tex_id;
  		}
  	}
  	/*	face order checking	*/
  	for( i = 0; i < 6; ++i )
  	{
  		if( (face_order[i] != 'N') &&
  			(face_order[i] != 'S') &&
  			(face_order[i] != 'W') &&
  			(face_order[i] != 'E') &&
  			(face_order[i] != 'U') &&
  			(face_order[i] != 'D') )
  		{
  			result_string_pointer = "Invalid single cube map face order";
  			return 0;
  		};
  	}
  	/*	capability checking	*/
  	if( query_cubemap_capability() != SOIL_CAPABILITY_PRESENT )
  	{
  		result_string_pointer = "No cube map capability present";
  		return 0;
  	}
  	/*	1st off, try to load the full image	*/
  	img = SOIL_load_image( filename, &width, &height, &channels, force_channels );
  	/*	channels holds the original number of channels, which may have been forced	*/
  	if( (force_channels >= 1) && (force_channels <= 4) )
  	{
  		channels = force_channels;
  	}
  	if( NULL == img )
  	{
  		/*	image loading failed	*/
  		result_string_pointer = stbi_failure_reason();
  		return 0;
  	}
  	/*	now, does this image have the right dimensions?	*/
  	if( (width != 6*height) &&
  		(6*width != height) )
  	{
  		SOIL_free_image_data( img );
  		result_string_pointer = "Single cubemap image must have a 6:1 ratio";
  		return 0;
  	}
  	/*	try the image split and create	*/
  	tex_id = SOIL_create_OGL_single_cubemap(
  			img, width, height, channels,
  			face_order, reuse_texture_ID, flags
  			);
  	/*	nuke the temporary image data and return the texture handle	*/
  	SOIL_free_image_data( img );
  	return tex_id;
  }
  
  unsigned int
  	SOIL_load_OGL_single_cubemap_from_memory
  	(
  		const unsigned char *const buffer,
  		int buffer_length,
  		const char face_order[6],
  		int force_channels,
  		unsigned int reuse_texture_ID,
  		unsigned int flags
  	)
  {
  	/*	variables	*/
  	unsigned char* img;
  	int width, height, channels, i;
  	unsigned int tex_id = 0;
  	/*	error checking	*/
  	if( buffer == NULL )
  	{
  		result_string_pointer = "Invalid single cube map buffer";
  		return 0;
  	}
  	/*	does the user want direct uploading of the image as a DDS file?	*/
  	if( flags & SOIL_FLAG_DDS_LOAD_DIRECT )
  	{
  		/*	1st try direct loading of the image as a DDS file
  			note: direct uploading will only load what is in the
  			DDS file, no MIPmaps will be generated, the image will
  			not be flipped, etc.	*/
  		tex_id = SOIL_direct_load_DDS_from_memory(
  				buffer, buffer_length,
  				reuse_texture_ID, flags, 1 );
  		if( tex_id )
  		{
  			/*	hey, it worked!!	*/
  			return tex_id;
  		}
  	}
  	/*	face order checking	*/
  	for( i = 0; i < 6; ++i )
  	{
  		if( (face_order[i] != 'N') &&
  			(face_order[i] != 'S') &&
  			(face_order[i] != 'W') &&
  			(face_order[i] != 'E') &&
  			(face_order[i] != 'U') &&
  			(face_order[i] != 'D') )
  		{
  			result_string_pointer = "Invalid single cube map face order";
  			return 0;
  		};
  	}
  	/*	capability checking	*/
  	if( query_cubemap_capability() != SOIL_CAPABILITY_PRESENT )
  	{
  		result_string_pointer = "No cube map capability present";
  		return 0;
  	}
  	/*	1st off, try to load the full image	*/
  	img = SOIL_load_image_from_memory(
  			buffer, buffer_length,
  			&width, &height, &channels,
  			force_channels );
  	/*	channels holds the original number of channels, which may have been forced	*/
  	if( (force_channels >= 1) && (force_channels <= 4) )
  	{
  		channels = force_channels;
  	}
  	if( NULL == img )
  	{
  		/*	image loading failed	*/
  		result_string_pointer = stbi_failure_reason();
  		return 0;
  	}
  	/*	now, does this image have the right dimensions?	*/
  	if( (width != 6*height) &&
  		(6*width != height) )
  	{
  		SOIL_free_image_data( img );
  		result_string_pointer = "Single cubemap image must have a 6:1 ratio";
  		return 0;
  	}
  	/*	try the image split and create	*/
  	tex_id = SOIL_create_OGL_single_cubemap(
  			img, width, height, channels,
  			face_order, reuse_texture_ID, flags
  			);
  	/*	nuke the temporary image data and return the texture handle	*/
  	SOIL_free_image_data( img );
  	return tex_id;
  }
  
  unsigned int
  	SOIL_create_OGL_single_cubemap
  	(
  		const unsigned char *const data,
  		int width, int height, int channels,
  		const char face_order[6],
  		unsigned int reuse_texture_ID,
  		unsigned int flags
  	)
  {
  	/*	variables	*/
  	unsigned char* sub_img;
  	int dw, dh, sz, i;
  	unsigned int tex_id;
  	/*	error checking	*/
  	if( data == NULL )
  	{
  		result_string_pointer = "Invalid single cube map image data";
  		return 0;
  	}
  	/*	face order checking	*/
  	for( i = 0; i < 6; ++i )
  	{
  		if( (face_order[i] != 'N') &&
  			(face_order[i] != 'S') &&
  			(face_order[i] != 'W') &&
  			(face_order[i] != 'E') &&
  			(face_order[i] != 'U') &&
  			(face_order[i] != 'D') )
  		{
  			result_string_pointer = "Invalid single cube map face order";
  			return 0;
  		};
  	}
  	/*	capability checking	*/
  	if( query_cubemap_capability() != SOIL_CAPABILITY_PRESENT )
  	{
  		result_string_pointer = "No cube map capability present";
  		return 0;
  	}
  	/*	now, does this image have the right dimensions?	*/
  	if( (width != 6*height) &&
  		(6*width != height) )
  	{
  		result_string_pointer = "Single cubemap image must have a 6:1 ratio";
  		return 0;
  	}
  	/*	which way am I stepping?	*/
  	if( width > height )
  	{
  		dw = height;
  		dh = 0;
  	} else
  	{
  		dw = 0;
  		dh = width;
  	}
  	sz = dw+dh;
  	sub_img = (unsigned char *)malloc( sz*sz*channels );
  	/*	do the splitting and uploading	*/
  	tex_id = reuse_texture_ID;
  	for( i = 0; i < 6; ++i )
  	{
  		int x, y, idx = 0;
  		unsigned int cubemap_target = 0;
  		/*	copy in the sub-image	*/
  		for( y = i*dh; y < i*dh+sz; ++y )
  		{
  			for( x = i*dw*channels; x < (i*dw+sz)*channels; ++x )
  			{
  				sub_img[idx++] = data[y*width*channels+x];
  			}
  		}
  		/*	what is my texture target?
  			remember, this coordinate system is
  			LHS if viewed from inside the cube!	*/
  		switch( face_order[i] )
  		{
  		case 'N':
  			cubemap_target = SOIL_TEXTURE_CUBE_MAP_POSITIVE_Z;
  			break;
  		case 'S':
  			cubemap_target = SOIL_TEXTURE_CUBE_MAP_NEGATIVE_Z;
  			break;
  		case 'W':
  			cubemap_target = SOIL_TEXTURE_CUBE_MAP_NEGATIVE_X;
  			break;
  		case 'E':
  			cubemap_target = SOIL_TEXTURE_CUBE_MAP_POSITIVE_X;
  			break;
  		case 'U':
  			cubemap_target = SOIL_TEXTURE_CUBE_MAP_POSITIVE_Y;
  			break;
  		case 'D':
  			cubemap_target = SOIL_TEXTURE_CUBE_MAP_NEGATIVE_Y;
  			break;
  		}
  		/*	upload it as a texture	*/
  		tex_id = SOIL_internal_create_OGL_texture(
  				sub_img, sz, sz, channels,
  				tex_id, flags,
  				SOIL_TEXTURE_CUBE_MAP,
  				cubemap_target,
  				SOIL_MAX_CUBE_MAP_TEXTURE_SIZE );
  	}
  	/*	and nuke the image and sub-image data	*/
  	SOIL_free_image_data( sub_img );
  	/*	and return the handle, such as it is	*/
  	return tex_id;
  }
  
  unsigned int
  	SOIL_create_OGL_texture
  	(
  		const unsigned char *const data,
  		int width, int height, int channels,
  		unsigned int reuse_texture_ID,
  		unsigned int flags
  	)
  {
  	/*	wrapper function for 2D textures	*/
  	return SOIL_internal_create_OGL_texture(
  				data, width, height, channels,
  				reuse_texture_ID, flags,
  				GL_TEXTURE_2D, GL_TEXTURE_2D,
  				GL_MAX_TEXTURE_SIZE );
  }
  
  #if SOIL_CHECK_FOR_GL_ERRORS
  void check_for_GL_errors( const char *calling_location )
  {
  	/*	check for errors	*/
  	GLenum err_code = glGetError();
  	while( GL_NO_ERROR != err_code )
  	{
  		printf( "OpenGL Error @ %s: %i", calling_location, err_code );
  		err_code = glGetError();
  	}
  }
  #else
  void check_for_GL_errors( const char *calling_location )
  {
  	/*	no check for errors	*/
  }
  #endif
  
  unsigned int
  	SOIL_internal_create_OGL_texture
  	(
  		const unsigned char *const data,
  		int width, int height, int channels,
  		unsigned int reuse_texture_ID,
  		unsigned int flags,
  		unsigned int opengl_texture_type,
  		unsigned int opengl_texture_target,
  		unsigned int texture_check_size_enum
  	)
  {
  	/*	variables	*/
  	unsigned char* img;
  	unsigned int tex_id;
  	unsigned int internal_texture_format = 0, original_texture_format = 0;
  	int DXT_mode = SOIL_CAPABILITY_UNKNOWN;
  	int max_supported_size;
  	/*	If the user wants to use the texture rectangle I kill a few flags	*/
  	if( flags & SOIL_FLAG_TEXTURE_RECTANGLE )
  	{
  		/*	well, the user asked for it, can we do that?	*/
  		if( query_tex_rectangle_capability() == SOIL_CAPABILITY_PRESENT )
  		{
  			/*	only allow this if the user in _NOT_ trying to do a cubemap!	*/
  			if( opengl_texture_type == GL_TEXTURE_2D )
  			{
  				/*	clean out the flags that cannot be used with texture rectangles	*/
  				flags &= ~(
  						SOIL_FLAG_POWER_OF_TWO | SOIL_FLAG_MIPMAPS |
  						SOIL_FLAG_TEXTURE_REPEATS
  					);
  				/*	and change my target	*/
  				opengl_texture_target = SOIL_TEXTURE_RECTANGLE_ARB;
  				opengl_texture_type = SOIL_TEXTURE_RECTANGLE_ARB;
  			} else
  			{
  				/*	not allowed for any other uses (yes, I'm looking at you, cubemaps!)	*/
  				flags &= ~SOIL_FLAG_TEXTURE_RECTANGLE;
  			}
  
  		} else
  		{
  			/*	can't do it, and that is a breakable offense (uv coords use pixels instead of [0,1]!)	*/
  			result_string_pointer = "Texture Rectangle extension unsupported";
  			return 0;
  		}
  	}
  	/*	create a copy the image data	*/
  	img = (unsigned char*)malloc( width*height*channels );
  	memcpy( img, data, width*height*channels );
  	/*	does the user want me to invert the image?	*/
  	if( flags & SOIL_FLAG_INVERT_Y )
  	{
  		int i, j;
  		for( j = 0; j*2 < height; ++j )
  		{
  			int index1 = j * width * channels;
  			int index2 = (height - 1 - j) * width * channels;
  			for( i = width * channels; i > 0; --i )
  			{
  				unsigned char temp = img[index1];
  				img[index1] = img[index2];
  				img[index2] = temp;
  				++index1;
  				++index2;
  			}
  		}
  	}
  	/*	does the user want me to scale the colors into the NTSC safe RGB range?	*/
  	if( flags & SOIL_FLAG_NTSC_SAFE_RGB )
  	{
  		scale_image_RGB_to_NTSC_safe( img, width, height, channels );
  	}
  	/*	does the user want me to convert from straight to pre-multiplied alpha?
  		(and do we even _have_ alpha?)	*/
  	if( flags & SOIL_FLAG_MULTIPLY_ALPHA )
  	{
  		int i;
  		switch( channels )
  		{
  		case 2:
  			for( i = 0; i < 2*width*height; i += 2 )
  			{
  				img[i] = (img[i] * img[i+1] + 128) >> 8;
  			}
  			break;
  		case 4:
  			for( i = 0; i < 4*width*height; i += 4 )
  			{
  				img[i+0] = (img[i+0] * img[i+3] + 128) >> 8;
  				img[i+1] = (img[i+1] * img[i+3] + 128) >> 8;
  				img[i+2] = (img[i+2] * img[i+3] + 128) >> 8;
  			}
  			break;
  		default:
  			/*	no other number of channels contains alpha data	*/
  			break;
  		}
  	}
  	/*	if the user can't support NPOT textures, make sure we force the POT option	*/
  	if( (query_NPOT_capability() == SOIL_CAPABILITY_NONE) &&
  		!(flags & SOIL_FLAG_TEXTURE_RECTANGLE) )
  	{
  		/*	add in the POT flag */
  		flags |= SOIL_FLAG_POWER_OF_TWO;
  	}
  	/*	how large of a texture can this OpenGL implementation handle?	*/
  	/*	texture_check_size_enum will be GL_MAX_TEXTURE_SIZE or SOIL_MAX_CUBE_MAP_TEXTURE_SIZE	*/
  	glGetIntegerv( texture_check_size_enum, &max_supported_size );
  	/*	do I need to make it a power of 2?	*/
  	if(
  		(flags & SOIL_FLAG_POWER_OF_TWO) ||	/*	user asked for it	*/
  		(flags & SOIL_FLAG_MIPMAPS) ||		/*	need it for the MIP-maps	*/
  		(width > max_supported_size) ||		/*	it's too big, (make sure it's	*/
  		(height > max_supported_size) )		/*	2^n for later down-sampling)	*/
  	{
  		int new_width = 1;
  		int new_height = 1;
  		while( new_width < width )
  		{
  			new_width *= 2;
  		}
  		while( new_height < height )
  		{
  			new_height *= 2;
  		}
  		/*	still?	*/
  		if( (new_width != width) || (new_height != height) )
  		{
  			/*	yep, resize	*/
  			unsigned char *resampled = (unsigned char*)malloc( channels*new_width*new_height );
  			up_scale_image(
  					img, width, height, channels,
  					resampled, new_width, new_height );
  			/*	OJO	this is for debug only!	*/
  			/*
  			SOIL_save_image( "\\showme.bmp", SOIL_SAVE_TYPE_BMP,
  							new_width, new_height, channels,
  							resampled );
  			*/
  			/*	nuke the old guy, then point it at the new guy	*/
  			SOIL_free_image_data( img );
  			img = resampled;
  			width = new_width;
  			height = new_height;
  		}
  	}
  	/*	now, if it is too large...	*/
  	if( (width > max_supported_size) || (height > max_supported_size) )
  	{
  		/*	I've already made it a power of two, so simply use the MIPmapping
  			code to reduce its size to the allowable maximum.	*/
  		unsigned char *resampled;
  		int reduce_block_x = 1, reduce_block_y = 1;
  		int new_width, new_height;
  		if( width > max_supported_size )
  		{
  			reduce_block_x = width / max_supported_size;
  		}
  		if( height > max_supported_size )
  		{
  			reduce_block_y = height / max_supported_size;
  		}
  		new_width = width / reduce_block_x;
  		new_height = height / reduce_block_y;
  		resampled = (unsigned char*)malloc( channels*new_width*new_height );
  		/*	perform the actual reduction	*/
  		mipmap_image(	img, width, height, channels,
  						resampled, reduce_block_x, reduce_block_y );
  		/*	nuke the old guy, then point it at the new guy	*/
  		SOIL_free_image_data( img );
  		img = resampled;
  		width = new_width;
  		height = new_height;
  	}
  	/*	does the user want us to use YCoCg color space?	*/
  	if( flags & SOIL_FLAG_CoCg_Y )
  	{
  		/*	this will only work with RGB and RGBA images */
  		convert_RGB_to_YCoCg( img, width, height, channels );
  		/*
  		save_image_as_DDS( "CoCg_Y.dds", width, height, channels, img );
  		*/
  	}
  	/*	create the OpenGL texture ID handle
      	(note: allowing a forced texture ID lets me reload a texture)	*/
      tex_id = reuse_texture_ID;
      if( tex_id == 0 )
      {
  		glGenTextures( 1, &tex_id );
      }
  	check_for_GL_errors( "glGenTextures" );
  	/* Note: sometimes glGenTextures fails (usually no OpenGL context)	*/
  	if( tex_id )
  	{
  		/*	and what type am I using as the internal texture format?	*/
  		switch( channels )
  		{
  		case 1:
  			original_texture_format = GL_LUMINANCE;
  			break;
  		case 2:
  			original_texture_format = GL_LUMINANCE_ALPHA;
  			break;
  		case 3:
  			original_texture_format = GL_RGB;
  			break;
  		case 4:
  			original_texture_format = GL_RGBA;
  			break;
  		}
  		internal_texture_format = original_texture_format;
  		/*	does the user want me to, and can I, save as DXT?	*/
  		if( flags & SOIL_FLAG_COMPRESS_TO_DXT )
  		{
  			DXT_mode = query_DXT_capability();
  			if( DXT_mode == SOIL_CAPABILITY_PRESENT )
  			{
  				/*	I can use DXT, whether I compress it or OpenGL does	*/
  				if( (channels & 1) == 1 )
  				{
  					/*	1 or 3 channels = DXT1	*/
  					internal_texture_format = SOIL_RGB_S3TC_DXT1;
  				} else
  				{
  					/*	2 or 4 channels = DXT5	*/
  					internal_texture_format = SOIL_RGBA_S3TC_DXT5;
  				}
  			}
  		}
  		/*  bind an OpenGL texture ID	*/
  		glBindTexture( opengl_texture_type, tex_id );
  		check_for_GL_errors( "glBindTexture" );
  		/*  upload the main image	*/
  		if( DXT_mode == SOIL_CAPABILITY_PRESENT )
  		{
  			/*	user wants me to do the DXT conversion!	*/
  			int DDS_size;
  			unsigned char *DDS_data = NULL;
  			if( (channels & 1) == 1 )
  			{
  				/*	RGB, use DXT1	*/
  				DDS_data = convert_image_to_DXT1( img, width, height, channels, &DDS_size );
  			} else
  			{
  				/*	RGBA, use DXT5	*/
  				DDS_data = convert_image_to_DXT5( img, width, height, channels, &DDS_size );
  			}
  			if( DDS_data )
  			{
  				soilGlCompressedTexImage2D(
  					opengl_texture_target, 0,
  					internal_texture_format, width, height, 0,
  					DDS_size, DDS_data );
  				check_for_GL_errors( "glCompressedTexImage2D" );
  				SOIL_free_image_data( DDS_data );
  				/*	printf( "Internal DXT compressor\n" );	*/
  			} else
  			{
  				/*	my compression failed, try the OpenGL driver's version	*/
  				glTexImage2D(
  					opengl_texture_target, 0,
  					internal_texture_format, width, height, 0,
  					original_texture_format, GL_UNSIGNED_BYTE, img );
  				check_for_GL_errors( "glTexImage2D" );
  				/*	printf( "OpenGL DXT compressor\n" );	*/
  			}
  		} else
  		{
  			/*	user want OpenGL to do all the work!	*/
  			glTexImage2D(
  				opengl_texture_target, 0,
  				internal_texture_format, width, height, 0,
  				original_texture_format, GL_UNSIGNED_BYTE, img );
  			check_for_GL_errors( "glTexImage2D" );
  			/*printf( "OpenGL DXT compressor\n" );	*/
  		}
  		/*	are any MIPmaps desired?	*/
  		if( flags & SOIL_FLAG_MIPMAPS )
  		{
  			int MIPlevel = 1;
  			int MIPwidth = (width+1) / 2;
  			int MIPheight = (height+1) / 2;
  			unsigned char *resampled = (unsigned char*)malloc( channels*MIPwidth*MIPheight );
  			while( ((1<<MIPlevel) <= width) || ((1<<MIPlevel) <= height) )
  			{
  				/*	do this MIPmap level	*/
  				mipmap_image(
  						img, width, height, channels,
  						resampled,
  						(1 << MIPlevel), (1 << MIPlevel) );
  				/*  upload the MIPmaps	*/
  				if( DXT_mode == SOIL_CAPABILITY_PRESENT )
  				{
  					/*	user wants me to do the DXT conversion!	*/
  					int DDS_size;
  					unsigned char *DDS_data = NULL;
  					if( (channels & 1) == 1 )
  					{
  						/*	RGB, use DXT1	*/
  						DDS_data = convert_image_to_DXT1(
  								resampled, MIPwidth, MIPheight, channels, &DDS_size );
  					} else
  					{
  						/*	RGBA, use DXT5	*/
  						DDS_data = convert_image_to_DXT5(
  								resampled, MIPwidth, MIPheight, channels, &DDS_size );
  					}
  					if( DDS_data )
  					{
  						soilGlCompressedTexImage2D(
  							opengl_texture_target, MIPlevel,
  							internal_texture_format, MIPwidth, MIPheight, 0,
  							DDS_size, DDS_data );
  						check_for_GL_errors( "glCompressedTexImage2D" );
  						SOIL_free_image_data( DDS_data );
  					} else
  					{
  						/*	my compression failed, try the OpenGL driver's version	*/
  						glTexImage2D(
  							opengl_texture_target, MIPlevel,
  							internal_texture_format, MIPwidth, MIPheight, 0,
  							original_texture_format, GL_UNSIGNED_BYTE, resampled );
  						check_for_GL_errors( "glTexImage2D" );
  					}
  				} else
  				{
  					/*	user want OpenGL to do all the work!	*/
  					glTexImage2D(
  						opengl_texture_target, MIPlevel,
  						internal_texture_format, MIPwidth, MIPheight, 0,
  						original_texture_format, GL_UNSIGNED_BYTE, resampled );
  					check_for_GL_errors( "glTexImage2D" );
  				}
  				/*	prep for the next level	*/
  				++MIPlevel;
  				MIPwidth = (MIPwidth + 1) / 2;
  				MIPheight = (MIPheight + 1) / 2;
  			}
  			SOIL_free_image_data( resampled );
  			/*	instruct OpenGL to use the MIPmaps	*/
  			glTexParameteri( opengl_texture_type, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
  			glTexParameteri( opengl_texture_type, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR );
  			check_for_GL_errors( "GL_TEXTURE_MIN/MAG_FILTER" );
  		} else
  		{
  			/*	instruct OpenGL _NOT_ to use the MIPmaps	*/
  			glTexParameteri( opengl_texture_type, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
  			glTexParameteri( opengl_texture_type, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
  			check_for_GL_errors( "GL_TEXTURE_MIN/MAG_FILTER" );
  		}
  		/*	does the user want clamping, or wrapping?	*/
  		if( flags & SOIL_FLAG_TEXTURE_REPEATS )
  		{
  			glTexParameteri( opengl_texture_type, GL_TEXTURE_WRAP_S, GL_REPEAT );
  			glTexParameteri( opengl_texture_type, GL_TEXTURE_WRAP_T, GL_REPEAT );
  			if( opengl_texture_type == SOIL_TEXTURE_CUBE_MAP )
  			{
  				/*	SOIL_TEXTURE_WRAP_R is invalid if cubemaps aren't supported	*/
  				glTexParameteri( opengl_texture_type, SOIL_TEXTURE_WRAP_R, GL_REPEAT );
  			}
  			check_for_GL_errors( "GL_TEXTURE_WRAP_*" );
  		} else
  		{
  			/*	unsigned int clamp_mode = SOIL_CLAMP_TO_EDGE;	*/
  			unsigned int clamp_mode = GL_CLAMP;
  			glTexParameteri( opengl_texture_type, GL_TEXTURE_WRAP_S, clamp_mode );
  			glTexParameteri( opengl_texture_type, GL_TEXTURE_WRAP_T, clamp_mode );
  			if( opengl_texture_type == SOIL_TEXTURE_CUBE_MAP )
  			{
  				/*	SOIL_TEXTURE_WRAP_R is invalid if cubemaps aren't supported	*/
  				glTexParameteri( opengl_texture_type, SOIL_TEXTURE_WRAP_R, clamp_mode );
  			}
  			check_for_GL_errors( "GL_TEXTURE_WRAP_*" );
  		}
  		/*	done	*/
  		result_string_pointer = "Image loaded as an OpenGL texture";
  	} else
  	{
  		/*	failed	*/
  		result_string_pointer = "Failed to generate an OpenGL texture name; missing OpenGL context?";
  	}
  	SOIL_free_image_data( img );
  	return tex_id;
  }
  
  int
  	SOIL_save_screenshot
  	(
  		const char *filename,
  		int image_type,
  		int x, int y,
  		int width, int height
  	)
  {
  	unsigned char *pixel_data;
  	int i, j;
  	int save_result;
  
  	/*	error checks	*/
  	if( (width < 1) || (height < 1) )
  	{
  		result_string_pointer = "Invalid screenshot dimensions";
  		return 0;
  	}
  	if( (x < 0) || (y < 0) )
  	{
  		result_string_pointer = "Invalid screenshot location";
  		return 0;
  	}
  	if( filename == NULL )
  	{
  		result_string_pointer = "Invalid screenshot filename";
  		return 0;
  	}
  
      /*  Get the data from OpenGL	*/
      pixel_data = (unsigned char*)malloc( 3*width*height );
      glReadPixels (x, y, width, height, GL_RGB, GL_UNSIGNED_BYTE, pixel_data);
  
      /*	invert the image	*/
      for( j = 0; j*2 < height; ++j )
  	{
  		int index1 = j * width * 3;
  		int index2 = (height - 1 - j) * width * 3;
  		for( i = width * 3; i > 0; --i )
  		{
  			unsigned char temp = pixel_data[index1];
  			pixel_data[index1] = pixel_data[index2];
  			pixel_data[index2] = temp;
  			++index1;
  			++index2;
  		}
  	}
  
      /*	save the image	*/
      save_result = SOIL_save_image( filename, image_type, width, height, 3, pixel_data);
  
      /*  And free the memory	*/
      SOIL_free_image_data( pixel_data );
  	return save_result;
  }
  
  unsigned char*
  	SOIL_load_image
  	(
  		const char *filename,
  		int *width, int *height, int *channels,
  		int force_channels
  	)
  {
  	unsigned char *result = stbi_load( filename,
  			width, height, channels, force_channels );
  	if( result == NULL )
  	{
  		result_string_pointer = stbi_failure_reason();
  	} else
  	{
  		result_string_pointer = "Image loaded";
  	}
  	return result;
  }
  
  unsigned char*
  	SOIL_load_image_from_memory
  	(
  		const unsigned char *const buffer,
  		int buffer_length,
  		int *width, int *height, int *channels,
  		int force_channels
  	)
  {
  	unsigned char *result = stbi_load_from_memory(
  				buffer, buffer_length,
  				width, height, channels,
  				force_channels );
  	if( result == NULL )
  	{
  		result_string_pointer = stbi_failure_reason();
  	} else
  	{
  		result_string_pointer = "Image loaded from memory";
  	}
  	return result;
  }
  
  int
  	SOIL_save_image
  	(
  		const char *filename,
  		int image_type,
  		int width, int height, int channels,
  		const unsigned char *const data
  	)
  {
  	int save_result;
  
  	/*	error check	*/
  	if( (width < 1) || (height < 1) ||
  		(channels < 1) || (channels > 4) ||
  		(data == NULL) ||
  		(filename == NULL) )
  	{
  		return 0;
  	}
  	if( image_type == SOIL_SAVE_TYPE_BMP )
  	{
  		save_result = stbi_write_bmp( filename,
  				width, height, channels, (void*)data );
  	} else
  	if( image_type == SOIL_SAVE_TYPE_TGA )
  	{
  		save_result = stbi_write_tga( filename,
  				width, height, channels, (void*)data );
  	} else
  	if( image_type == SOIL_SAVE_TYPE_DDS )
  	{
  		save_result = save_image_as_DDS( filename,
  				width, height, channels, (const unsigned char *const)data );
  	} else
  	{
  		save_result = 0;
  	}
  	if( save_result == 0 )
  	{
  		result_string_pointer = "Saving the image failed";
  	} else
  	{
  		result_string_pointer = "Image saved";
  	}
  	return save_result;
  }
  
  void
  	SOIL_free_image_data
  	(
  		unsigned char *img_data
  	)
  {
  	free( (void*)img_data );
  }
  
  const char*
  	SOIL_last_result
  	(
  		void
  	)
  {
  	return result_string_pointer;
  }
  
  unsigned int SOIL_direct_load_DDS_from_memory(
  		const unsigned char *const buffer,
  		int buffer_length,
  		unsigned int reuse_texture_ID,
  		int flags,
  		int loading_as_cubemap )
  {
  	/*	variables	*/
  	DDS_header header;
  	unsigned int buffer_index = 0;
  	unsigned int tex_ID = 0;
  	/*	file reading variables	*/
  	unsigned int S3TC_type = 0;
  	unsigned char *DDS_data;
  	unsigned int DDS_main_size;
  	unsigned int DDS_full_size;
  	unsigned int width, height;
  	int mipmaps, cubemap, uncompressed, block_size = 16;
  	unsigned int flag;
  	unsigned int cf_target, ogl_target_start, ogl_target_end;
  	unsigned int opengl_texture_type;
  	int i;
  	/*	1st off, does the filename even exist?	*/
  	if( NULL == buffer )
  	{
  		/*	we can't do it!	*/
  		result_string_pointer = "NULL buffer";
  		return 0;
  	}
  	if( buffer_length < sizeof( DDS_header ) )
  	{
  		/*	we can't do it!	*/
  		result_string_pointer = "DDS file was too small to contain the DDS header";
  		return 0;
  	}
  	/*	try reading in the header	*/
  	memcpy ( (void*)(&header), (const void *)buffer, sizeof( DDS_header ) );
  	buffer_index = sizeof( DDS_header );
  	/*	guilty until proven innocent	*/
  	result_string_pointer = "Failed to read a known DDS header";
  	/*	validate the header (warning, "goto"'s ahead, shield your eyes!!)	*/
  	flag = ('D'<<0)|('D'<<8)|('S'<<16)|(' '<<24);
  	if( header.dwMagic != flag ) {goto quick_exit;}
  	if( header.dwSize != 124 ) {goto quick_exit;}
  	/*	I need all of these	*/
  	flag = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PIXELFORMAT;
  	if( (header.dwFlags & flag) != flag ) {goto quick_exit;}
  	/*	According to the MSDN spec, the dwFlags should contain
  		DDSD_LINEARSIZE if it's compressed, or DDSD_PITCH if
  		uncompressed.  Some DDS writers do not conform to the
  		spec, so I need to make my reader more tolerant	*/
  	/*	I need one of these	*/
  	flag = DDPF_FOURCC | DDPF_RGB;
  	if( (header.sPixelFormat.dwFlags & flag) == 0 ) {goto quick_exit;}
  	if( header.sPixelFormat.dwSize != 32 ) {goto quick_exit;}
  	if( (header.sCaps.dwCaps1 & DDSCAPS_TEXTURE) == 0 ) {goto quick_exit;}
  	/*	make sure it is a type we can upload	*/
  	if( (header.sPixelFormat.dwFlags & DDPF_FOURCC) &&
  		!(
  		(header.sPixelFormat.dwFourCC == (('D'<<0)|('X'<<8)|('T'<<16)|('1'<<24))) ||
  		(header.sPixelFormat.dwFourCC == (('D'<<0)|('X'<<8)|('T'<<16)|('3'<<24))) ||
  		(header.sPixelFormat.dwFourCC == (('D'<<0)|('X'<<8)|('T'<<16)|('5'<<24)))
  		) )
  	{
  		goto quick_exit;
  	}
  	/*	OK, validated the header, let's load the image data	*/
  	result_string_pointer = "DDS header loaded and validated";
  	width = header.dwWidth;
  	height = header.dwHeight;
  	uncompressed = 1 - (header.sPixelFormat.dwFlags & DDPF_FOURCC) / DDPF_FOURCC;
  	cubemap = (header.sCaps.dwCaps2 & DDSCAPS2_CUBEMAP) / DDSCAPS2_CUBEMAP;
  	if( uncompressed )
  	{
  		S3TC_type = GL_RGB;
  		block_size = 3;
  		if( header.sPixelFormat.dwFlags & DDPF_ALPHAPIXELS )
  		{
  			S3TC_type = GL_RGBA;
  			block_size = 4;
  		}
  		DDS_main_size = width * height * block_size;
  	} else
  	{
  		/*	can we even handle direct uploading to OpenGL DXT compressed images?	*/
  		if( query_DXT_capability() != SOIL_CAPABILITY_PRESENT )
  		{
  			/*	we can't do it!	*/
  			result_string_pointer = "Direct upload of S3TC images not supported by the OpenGL driver";
  			return 0;
  		}
  		/*	well, we know it is DXT1/3/5, because we checked above	*/
  		switch( (header.sPixelFormat.dwFourCC >> 24) - '0' )
  		{
  		case 1:
  			S3TC_type = SOIL_RGBA_S3TC_DXT1;
  			block_size = 8;
  			break;
  		case 3:
  			S3TC_type = SOIL_RGBA_S3TC_DXT3;
  			block_size = 16;
  			break;
  		case 5:
  			S3TC_type = SOIL_RGBA_S3TC_DXT5;
  			block_size = 16;
  			break;
  		}
  		DDS_main_size = ((width+3)>>2)*((height+3)>>2)*block_size;
  	}
  	if( cubemap )
  	{
  		/* does the user want a cubemap?	*/
  		if( !loading_as_cubemap )
  		{
  			/*	we can't do it!	*/
  			result_string_pointer = "DDS image was a cubemap";
  			return 0;
  		}
  		/*	can we even handle cubemaps with the OpenGL driver?	*/
  		if( query_cubemap_capability() != SOIL_CAPABILITY_PRESENT )
  		{
  			/*	we can't do it!	*/
  			result_string_pointer = "Direct upload of cubemap images not supported by the OpenGL driver";
  			return 0;
  		}
  		ogl_target_start = SOIL_TEXTURE_CUBE_MAP_POSITIVE_X;
  		ogl_target_end =   SOIL_TEXTURE_CUBE_MAP_NEGATIVE_Z;
  		opengl_texture_type = SOIL_TEXTURE_CUBE_MAP;
  	} else
  	{
  		/* does the user want a non-cubemap?	*/
  		if( loading_as_cubemap )
  		{
  			/*	we can't do it!	*/
  			result_string_pointer = "DDS image was not a cubemap";
  			return 0;
  		}
  		ogl_target_start = GL_TEXTURE_2D;
  		ogl_target_end =   GL_TEXTURE_2D;
  		opengl_texture_type = GL_TEXTURE_2D;
  	}
  	if( (header.sCaps.dwCaps1 & DDSCAPS_MIPMAP) && (header.dwMipMapCount > 1) )
  	{
  		int shift_offset;
  		mipmaps = header.dwMipMapCount - 1;
  		DDS_full_size = DDS_main_size;
  		if( uncompressed )
  		{
  			/*	uncompressed DDS, simple MIPmap size calculation	*/
  			shift_offset = 0;
  		} else
  		{
  			/*	compressed DDS, MIPmap size calculation is block based	*/
  			shift_offset = 2;
  		}
  		for( i = 1; i <= mipmaps; ++ i )
  		{
  			int w, h;
  			w = width >> (shift_offset + i);
  			h = height >> (shift_offset + i);
  			if( w < 1 )
  			{
  				w = 1;
  			}
  			if( h < 1 )
  			{
  				h = 1;
  			}
  			DDS_full_size += w*h*block_size;
  		}
  	} else
  	{
  		mipmaps = 0;
  		DDS_full_size = DDS_main_size;
  	}
  	DDS_data = (unsigned char*)malloc( DDS_full_size );
  	/*	got the image data RAM, create or use an existing OpenGL texture handle	*/
  	tex_ID = reuse_texture_ID;
  	if( tex_ID == 0 )
  	{
  		glGenTextures( 1, &tex_ID );
  	}
  	/*  bind an OpenGL texture ID	*/
  	glBindTexture( opengl_texture_type, tex_ID );
  	/*	do this for each face of the cubemap!	*/
  	for( cf_target = ogl_target_start; cf_target <= ogl_target_end; ++cf_target )
  	{
  		if( buffer_index + DDS_full_size <= buffer_length )
  		{
  			unsigned int byte_offset = DDS_main_size;
  			memcpy( (void*)DDS_data, (const void*)(&buffer[buffer_index]), DDS_full_size );
  			buffer_index += DDS_full_size;
  			/*	upload the main chunk	*/
  			if( uncompressed )
  			{
  				/*	and remember, DXT uncompressed uses BGR(A),
  					so swap to RGB(A) for ALL MIPmap levels	*/
  				for( i = 0; i < DDS_full_size; i += block_size )
  				{
  					unsigned char temp = DDS_data[i];
  					DDS_data[i] = DDS_data[i+2];
  					DDS_data[i+2] = temp;
  				}
  				glTexImage2D(
  					cf_target, 0,
  					S3TC_type, width, height, 0,
  					S3TC_type, GL_UNSIGNED_BYTE, DDS_data );
  			} else
  			{
  				soilGlCompressedTexImage2D(
  					cf_target, 0,
  					S3TC_type, width, height, 0,
  					DDS_main_size, DDS_data );
  			}
  			/*	upload the mipmaps, if we have them	*/
  			for( i = 1; i <= mipmaps; ++i )
  			{
  				int w, h, mip_size;
  				w = width >> i;
  				h = height >> i;
  				if( w < 1 )
  				{
  					w = 1;
  				}
  				if( h < 1 )
  				{
  					h = 1;
  				}
  				/*	upload this mipmap	*/
  				if( uncompressed )
  				{
  					mip_size = w*h*block_size;
  					glTexImage2D(
  						cf_target, i,
  						S3TC_type, w, h, 0,
  						S3TC_type, GL_UNSIGNED_BYTE, &DDS_data[byte_offset] );
  				} else
  				{
  					mip_size = ((w+3)/4)*((h+3)/4)*block_size;
  					soilGlCompressedTexImage2D(
  						cf_target, i,
  						S3TC_type, w, h, 0,
  						mip_size, &DDS_data[byte_offset] );
  				}
  				/*	and move to the next mipmap	*/
  				byte_offset += mip_size;
  			}
  			/*	it worked!	*/
  			result_string_pointer = "DDS file loaded";
  		} else
  		{
  			glDeleteTextures( 1, & tex_ID );
  			tex_ID = 0;
  			cf_target = ogl_target_end + 1;
  			result_string_pointer = "DDS file was too small for expected image data";
  		}
  	}/* end reading each face */
  	SOIL_free_image_data( DDS_data );
  	if( tex_ID )
  	{
  		/*	did I have MIPmaps?	*/
  		if( mipmaps > 0 )
  		{
  			/*	instruct OpenGL to use the MIPmaps	*/
  			glTexParameteri( opengl_texture_type, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
  			glTexParameteri( opengl_texture_type, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR );
  		} else
  		{
  			/*	instruct OpenGL _NOT_ to use the MIPmaps	*/
  			glTexParameteri( opengl_texture_type, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
  			glTexParameteri( opengl_texture_type, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
  		}
  		/*	does the user want clamping, or wrapping?	*/
  		if( flags & SOIL_FLAG_TEXTURE_REPEATS )
  		{
  			glTexParameteri( opengl_texture_type, GL_TEXTURE_WRAP_S, GL_REPEAT );
  			glTexParameteri( opengl_texture_type, GL_TEXTURE_WRAP_T, GL_REPEAT );
  			glTexParameteri( opengl_texture_type, SOIL_TEXTURE_WRAP_R, GL_REPEAT );
  		} else
  		{
  			/*	unsigned int clamp_mode = SOIL_CLAMP_TO_EDGE;	*/
  			unsigned int clamp_mode = GL_CLAMP;
  			glTexParameteri( opengl_texture_type, GL_TEXTURE_WRAP_S, clamp_mode );
  			glTexParameteri( opengl_texture_type, GL_TEXTURE_WRAP_T, clamp_mode );
  			glTexParameteri( opengl_texture_type, SOIL_TEXTURE_WRAP_R, clamp_mode );
  		}
  	}
  
  quick_exit:
  	/*	report success or failure	*/
  	return tex_ID;
  }
  
  unsigned int SOIL_direct_load_DDS(
  		const char *filename,
  		unsigned int reuse_texture_ID,
  		int flags,
  		int loading_as_cubemap )
  {
  	FILE *f;
  	unsigned char *buffer;
  	size_t buffer_length, bytes_read;
  	unsigned int tex_ID = 0;
  	/*	error checks	*/
  	if( NULL == filename )
  	{
  		result_string_pointer = "NULL filename";
  		return 0;
  	}
  	f = fopen( filename, "rb" );
  	if( NULL == f )
  	{
  		/*	the file doesn't seem to exist (or be open-able)	*/
  		result_string_pointer = "Can not find DDS file";
  		return 0;
  	}
  	fseek( f, 0, SEEK_END );
  	buffer_length = ftell( f );
  	fseek( f, 0, SEEK_SET );
  	buffer = (unsigned char *) malloc( buffer_length );
  	if( NULL == buffer )
  	{
  		result_string_pointer = "malloc failed";
  		fclose( f );
  		return 0;
  	}
  	bytes_read = fread( (void*)buffer, 1, buffer_length, f );
  	fclose( f );
  	if( bytes_read < buffer_length )
  	{
  		/*	huh?	*/
  		buffer_length = bytes_read;
  	}
  	/*	now try to do the loading	*/
  	tex_ID = SOIL_direct_load_DDS_from_memory(
  		(const unsigned char *const)buffer, buffer_length,
  		reuse_texture_ID, flags, loading_as_cubemap );
  	SOIL_free_image_data( buffer );
  	return tex_ID;
  }
  
  int query_NPOT_capability( void )
  {
  	/*	check for the capability	*/
  	if( has_NPOT_capability == SOIL_CAPABILITY_UNKNOWN )
  	{
  		/*	we haven't yet checked for the capability, do so	*/
  		if(
  			(NULL == strstr( (char const*)glGetString( GL_EXTENSIONS ),
  				"GL_ARB_texture_non_power_of_two" ) )
  			)
  		{
  			/*	not there, flag the failure	*/
  			has_NPOT_capability = SOIL_CAPABILITY_NONE;
  		} else
  		{
  			/*	it's there!	*/
  			has_NPOT_capability = SOIL_CAPABILITY_PRESENT;
  		}
  	}
  	/*	let the user know if we can do non-power-of-two textures or not	*/
  	return has_NPOT_capability;
  }
  
  int query_tex_rectangle_capability( void )
  {
  	/*	check for the capability	*/
  	if( has_tex_rectangle_capability == SOIL_CAPABILITY_UNKNOWN )
  	{
  		/*	we haven't yet checked for the capability, do so	*/
  		if(
  			(NULL == strstr( (char const*)glGetString( GL_EXTENSIONS ),
  				"GL_ARB_texture_rectangle" ) )
  		&&
  			(NULL == strstr( (char const*)glGetString( GL_EXTENSIONS ),
  				"GL_EXT_texture_rectangle" ) )
  		&&
  			(NULL == strstr( (char const*)glGetString( GL_EXTENSIONS ),
  				"GL_NV_texture_rectangle" ) )
  			)
  		{
  			/*	not there, flag the failure	*/
  			has_tex_rectangle_capability = SOIL_CAPABILITY_NONE;
  		} else
  		{
  			/*	it's there!	*/
  			has_tex_rectangle_capability = SOIL_CAPABILITY_PRESENT;
  		}
  	}
  	/*	let the user know if we can do texture rectangles or not	*/
  	return has_tex_rectangle_capability;
  }
  
  int query_cubemap_capability( void )
  {
  	/*	check for the capability	*/
  	if( has_cubemap_capability == SOIL_CAPABILITY_UNKNOWN )
  	{
  		/*	we haven't yet checked for the capability, do so	*/
  		if(
  			(NULL == strstr( (char const*)glGetString( GL_EXTENSIONS ),
  				"GL_ARB_texture_cube_map" ) )
  		&&
  			(NULL == strstr( (char const*)glGetString( GL_EXTENSIONS ),
  				"GL_EXT_texture_cube_map" ) )
  			)
  		{
  			/*	not there, flag the failure	*/
  			has_cubemap_capability = SOIL_CAPABILITY_NONE;
  		} else
  		{
  			/*	it's there!	*/
  			has_cubemap_capability = SOIL_CAPABILITY_PRESENT;
  		}
  	}
  	/*	let the user know if we can do cubemaps or not	*/
  	return has_cubemap_capability;
  }
  
  int query_DXT_capability( void )
  {
  	/*	check for the capability	*/
  	if( has_DXT_capability == SOIL_CAPABILITY_UNKNOWN )
  	{
  		/*	we haven't yet checked for the capability, do so	*/
  		if( NULL == strstr(
  				(char const*)glGetString( GL_EXTENSIONS ),
  				"GL_EXT_texture_compression_s3tc" ) )
  		{
  			/*	not there, flag the failure	*/
  			has_DXT_capability = SOIL_CAPABILITY_NONE;
  		} else
  		{
  			/*	and find the address of the extension function	*/
  			P_SOIL_GLCOMPRESSEDTEXIMAGE2DPROC ext_addr = NULL;
  			#ifdef WIN32
  				ext_addr = (P_SOIL_GLCOMPRESSEDTEXIMAGE2DPROC)
  						wglGetProcAddress
  						(
  							"glCompressedTexImage2DARB"
  						);
  			#elif defined(__APPLE__) || defined(__APPLE_CC__)
  				/*	I can't test this Apple stuff!	*/
  				CFBundleRef bundle;
  				CFURLRef bundleURL =
  					CFURLCreateWithFileSystemPath(
  						kCFAllocatorDefault,
  						CFSTR("/System/Library/Frameworks/OpenGL.framework"),
  						kCFURLPOSIXPathStyle,
  						true );
  				CFStringRef extensionName =
  					CFStringCreateWithCString(
  						kCFAllocatorDefault,
  						"glCompressedTexImage2DARB",
  						kCFStringEncodingASCII );
  				bundle = CFBundleCreate( kCFAllocatorDefault, bundleURL );
  				assert( bundle != NULL );
  				ext_addr = (P_SOIL_GLCOMPRESSEDTEXIMAGE2DPROC)
  						CFBundleGetFunctionPointerForName
  						(
  							bundle, extensionName
  						);
  				CFRelease( bundleURL );
  				CFRelease( extensionName );
  				CFRelease( bundle );
  			#else
  				ext_addr = (P_SOIL_GLCOMPRESSEDTEXIMAGE2DPROC)
  						glXGetProcAddressARB
  						(
  							(const GLubyte *)"glCompressedTexImage2DARB"
  						);
  			#endif
  			/*	Flag it so no checks needed later	*/
  			if( NULL == ext_addr )
  			{
  				/*	hmm, not good!!  This should not happen, but does on my
  					laptop's VIA chipset.  The GL_EXT_texture_compression_s3tc
  					spec requires that ARB_texture_compression be present too.
  					this means I can upload and have the OpenGL drive do the
  					conversion, but I can't use my own routines or load DDS files
  					from disk and upload them directly [8^(	*/
  				has_DXT_capability = SOIL_CAPABILITY_NONE;
  			} else
  			{
  				/*	all's well!	*/
  				soilGlCompressedTexImage2D = ext_addr;
  				has_DXT_capability = SOIL_CAPABILITY_PRESENT;
  			}
  		}
  	}
  	/*	let the user know if we can do DXT or not	*/
  	return has_DXT_capability;
  }
  