//***********************************************************************//
//																		?//
//		-?“Talk?to?me?like?I‘m?a?3?year?old!“?Programming?Lessons?-		?//
//???????????????????????????????????????????????????????????????????????//
//		$Author:		DigiBen		digiben@gametutorials.com			?//
//																		?//
//		$Program:		RenderToTexture									?//
//																		?//
//		$Description:	Demonstrates?how?to?render?screen?to?a?texture	?//
//																		?//
//		$Date:			2/27/02											?//
//																		?//
//***********************************************************************//


#include?“main.h“


/////////////////////////////////?CREATE?TEXTURE?\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*
/////
/////	This?creates?a?texture?in?OpenGL?that?we?can?texture?map
/////
/////////////////////////////////?CREATE?TEXTURE?\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*

void?CreateTexture（UINT?textureArray[]?LPSTR?strFileName?int?textureID）
{
	AUX_RGBImageRec?*pBitmap?=?NULL;
	
	if（!strFileName）									//?Return?from?the?function?if?no?file?name?was?passed?in
		return;
	
	//?We?need?to?load?the?texture?data?so?we?use?a?cool?API?that?the?glaux.lib?offers.
	
	pBitmap?=?auxDIBImageLoad（strFileName）;				//?Load?the?bitmap?and?store?the?data
	
	if（pBitmap?==?NULL）									//?If?we?can‘t?load?the?file?quit!
		exit（0）;

	//?Generate?a?texture?with?the?associative?texture?ID?stored?in?the?array
	glGenTextures（1?&textureArray[textureID]）;

	//?Bind?the?texture?to?the?texture?arrays?index?and?init?the?texture
	glBindTexture（GL_TEXTURE_2D?textureArray[textureID]）;

	//?Build?Mipmaps?（builds?different?versions?of?the?picture?for?distances?-?looks?better）
	gluBuild2DMipmaps（GL_TEXTURE_2D?3?pBitmap->sizeX?pBitmap->sizeY?GL_RGB?GL_UNSIGNED_BYTE?pBitmap->data）;

	//?Lastly?we?need?to?tell?OpenGL?the?quality?of?our?texture?map.??GL_LINEAR_MIPMAP_LINEAR
	//?is?the?smoothest.??GL_LINEAR_MIPMAP_NEAREST?is?faster?than?GL_LINEAR_MIPMAP_LINEAR?
	//?but?looks?blochy?and?pixilated.??Good?for?slower?computers?though.??
		
	glTexParameteri（GL_TEXTURE_2DGL_TEXTURE_MIN_FILTERGL_LINEAR_MIPMAP_NEAREST）;
	glTexParameteri（GL_TEXTURE_2DGL_TEXTURE_MAG_FILTERGL_LINEAR）;

	//?Now?we?need?to?free?the?bitmap?data?that?we?loaded?since?openGL?stored?it?as?a?texture

	if?（pBitmap）										//?If?we?loaded?the?bitmap
	{
		if?（pBitmap->data）								//?If?there?is?texture?data
		{
			free（pBitmap->data）;						//?Free?the?texture?data?we?don‘t?need?it?anymore
		}

		free（pBitmap）;									//?Free?the?bitmap?structure
	}
}


/////////////////////////////////?CHANGE?TO?FULL?SCREEN?\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*
/////
/////	This?changes?the?screen?to?FULL?SCREEN
/////
/////////////////////////////////?CHANGE?TO?FULL?SCREEN?\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*

void?ChangeToFullScreen（）
{
	DEVMODE?dmSettings;									//?Device?Mode?variable

	memset（&dmSettings0sizeof（dmSettings））;			//?Makes?Sure

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????4410??2005-01-09?23:45??Render?to?a?Texture\RenderToTexture.vcproj

?????文件??????19377??2003-11-20?00:36??Render?to?a?Texture\Main.cpp

?????文件????????919??2005-01-09?23:45??Render?to?a?Texture\RenderToTexture.sln

?????文件??????12795??2003-11-20?00:37??Render?to?a?Texture\Init.cpp

?????文件?????196662??2002-02-28?01:59??Render?to?a?Texture\Brick.bmp

?????文件???????3096??2002-02-28?01:56??Render?to?a?Texture\main.h

?????文件??????49152??2003-11-20?00:37??Render?to?a?Texture\RenderToTexture.exe

?????文件???????2108??2003-04-20?17:51??Render?to?a?Texture\ReadMe?-?RenderToTexture.txt

?????目錄??????????0??2008-05-01?01:47??Render?to?a?Texture

-----------?---------??----------?-----??----

???????????????288737????????????????????10