//?LoadTGA.c
//?Loads?a?Targa?file?for?OpenGL
//?Richard?S.?Wright?Jr.
//?OpenGL?SuperBible
//?This?really?only?works?with?24/32/8?bit?targas

#include?“Tool.h“
#include?

//?Define?targa?header.
#pragma?pack（1）
typedef?struct
????{
????GLbyte	identsize;??????????????//?Size?of?ID?field?that?follows?header?（0）
????GLbyte	colorMapType;???????????//?0?=?None?1?=?paletted
????GLbyte	imageType;??????????????//?0?=?none?1?=?indexed?2?=?rgb?3?=?grey?+8=rle
????unsigned?short	colorMapStart;??????????//?First?colour?map?entry
????unsigned?short	colorMapLength;?????????//?Number?of?colors
????unsigned?char?	colorMapBits;???//?bits?per?palette?entry
????unsigned?short	xstart;?????????????????//?image?x?origin
????unsigned?short	ystart;?????????????????//?image?y?origin
????unsigned?short	width;??????????????????//?width?in?pixels
????unsigned?short	height;?????????????????//?height?in?pixels
????GLbyte	bits;???????????????????//?bits?per?pixel?（8?16?24?32）
????GLbyte	descriptor;?????????????//?image?descriptor
????}?TGAHEADER;
#pragma?pack（8）



////////////////////////////////////////////////////////////////////
//?Allocate?memory?and?load?targa?bits.?Returns?pointer?to?new?buffer
//?height?and?width?of?texture?and?the?OpenGL?format?of?data.
//?Call?free（）?on?buffer?when?finished!
//?This?only?works?on?pretty?vanilla?targas...?8?24?or?32?bit?color
//?only?no?palettes?no?RLE?encoding.
GLbyte?*gltLoadTGA（const?char?*szFileName?GLint?*iWidth?GLint?*iHeight?GLint?*iComponents?GLenum?*eFormat）
????{
????FILE?*pFile;			//?File?pointer
????TGAHEADER?tgaHeader;		//?TGA?file?header
????unsigned?long?lImageSize;		//?Size?in?bytes?of?image
????short?sDepth;			//?Pixel?depth;
????GLbyte	*pBits?=?NULL;??????????//?Pointer?to?bits
????
????//?Default/Failed?values
????*iWidth?=?0;
????*iHeight?=?0;
????*eFormat?=?GL_BGR_EXT;
????*iComponents?=?GL_RGB8;
????
????//?Attempt?to?open?the?fil
????pFile?=?fopen（szFileName?“rb“）;
????if（pFile?==?NULL）
????????return?NULL;
????????
????//?Read?in?header?（binary）
????fread（&tgaHeader?18/*?sizeof（TGAHEADER）*/?1?pFile）;
????
????//?Do?byte?swap?for?big?vs?little?endian
#ifdef?__APPLE__
????BYTE_SWAP（tgaHeader.colorMapStart）;
????BYTE_SWAP（tgaHeader.colorMapLength）;
????BYTE_SWAP（tgaHeader.xstart）;
????BYTE_SWAP（tgaHeader.ystart）;
????BYTE_SWAP（tgaHeader.width）;
????BYTE_SWAP（tgaHeader.height）;
#endif
	
	
????//?Get?width?height?and?depth?of?texture
????*iWidth?=?tgaHeader.width;
????*iHeight?=?tgaHeader.height;
????sDepth?=?tgaHeader.bits?/?8;
????
????//?Put?some?validity?checks?here.?Very?simply?I?only?understand
????//?or?care?about?8?24?or?32?bit?targa‘s.
????if（tgaHeader.bits?!=?8?&&?tgaHeader.bits?!=?24?&&?tgaHeader.bits?!=?32）
????????return?NULL;
	
????//?Calculate?size?of?image?buffer
????lImageSize?=?tgaHeader.width?*?tgaHeader.height?*?sDepth;
????
????//?Allocate?memory?and?check?for?success
????pBits

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

?????文件?????165376??2013-02-27?20:20??solar\Debug\glu32.dll

?????文件?????169984??2013-02-27?20:20??solar\Debug\glut.dll

?????文件?????169984??2013-02-27?20:20??solar\Debug\glut32.dll

?????文件???????3646??2013-05-06?18:53??solar\Debug\LoadTGA.obj

?????文件??????52981??2013-05-06?18:53??solar\Debug\LoadTGA.sbr

?????文件????3220480??2013-05-05?20:29??solar\Debug\Solar2.bsc

?????文件?????217168??2013-05-07?22:37??solar\Debug\Solar2.exe

?????文件?????272296??2013-05-07?22:37??solar\Debug\Solar2.ilk

?????文件??????27570??2013-05-07?22:37??solar\Debug\Solar2.obj

????I.A....???2423452??2013-05-06?19:30??solar\Debug\Solar2.pch

?????文件?????541696??2013-05-07?22:37??solar\Debug\Solar2.pdb

?????文件?????629631??2013-05-07?22:37??solar\Debug\Solar2.sbr

?????文件??????58368??2013-05-07?22:37??solar\Debug\vc60.idb

?????文件??????53248??2013-05-07?22:37??solar\Debug\vc60.pdb

?????文件????1572908??2013-05-05?20:28??solar\Earth.tga

?????文件?????302727??2013-05-05?20:24??solar\GLEXT.H

?????文件????3110444??2013-05-05?20:25??solar\Jupiter.tga

?????文件???????3780??2013-05-05?20:24??solar\LoadTGA.c

?????文件????3110444??2013-05-05?20:25??solar\Mars.tga

?????文件????1572908??2013-05-05?20:26??solar\Mercury.tga

?????文件????1572908??2013-05-05?20:28??solar\Moon.tga

?????文件?????777644??2013-05-05?20:24??solar\Neptune.tga

?????文件?????777644??2013-05-05?20:24??solar\Pluto.tga

?????文件?????777644??2013-05-05?20:24??solar\Saturn.tga

?????文件??????13188??2013-05-07?22:37??solar\Solar2.c

?????文件???????3583??2013-05-06?18:54??solar\Solar2.dsp

?????文件????????520??2013-05-05?20:24??solar\Solar2.dsw

?????文件?????107520??2013-05-07?22:37??solar\Solar2.ncb

?????文件??????48640??2013-05-07?22:37??solar\Solar2.opt

?????文件???????1218??2013-05-07?22:37??solar\Solar2.plg

............此處省略9個文件信息