#include?
#include?
#include?
#include?
#include?

#ifdef?__APPLE__
#include???????????//?OS?X?version?of?GLUT
#else
#define?FREEGLUT_STATIC
#include?????????????//?Windows?FreeGlut?equivalent
#endif

#include?
using?namespace?std;

const?float?PI?=?3.14159265358979323846;

/************************************************************************************/
void?ChangeSize（int?w?int?h）
{
????glViewport（0?0?w?h）;
}

/************************************************************************************/
#include?
#include?
#define?MAX_SHADER_LENGTH?8192
#define?MAX_TARGET_NUM??10

GLchar?shaderText[MAX_SHADER_LENGTH];

void?gltLoadShaderSrc（const?char?*szShaderSrc?GLuint?shader）
{
????GLchar?*fsStringPtr[1];

????fsStringPtr[0]?=?（GLchar?*）szShaderSrc;
????glShaderSource（shader?1?（const?GLchar?**）fsStringPtr?NULL）;
}

bool?gltLoadShaderFile（const?char?*szFile?GLuint?shader）
{
????GLint?shaderLength?=?0;
????FILE?*fp;

????//?Open?the?shader?file
????fp?=?fopen（szFile?“r“）;
????if（fp?!=?NULL）
????{
????????//?See?how?long?the?file?is
????????while?（fgetc（fp）?!=?EOF）
????????????shaderLength++;

????????//?Allocate?a?block?of?memory?to?send?in?the?shader
????????assert（shaderLength?????????if（shaderLength?>?MAX_SHADER_LENGTH）
????????{
????????????fclose（fp）;
????????????return?false;
????????}

????????//?Go?back?to?beginning?of?file
????????rewind（fp）;

????????//?Read?the?whole?file?in
????????if?（shaderText?!=?NULL）
????????????fread（shaderText?1?shaderLength?fp）;

????????//?Make?sure?it?is?null?terminated?and?close?the?file
????????shaderText[shaderLength]?=?‘\0‘;
????????fclose（fp）;
????}
????else
????????return?false;

????//?Load?the?string
????gltLoadShaderSrc（（const?char?*）shaderText?shader）;

????return?true;
}

GLuint?vao;
GLuint?vertex_bufferindex_buffer;
GLuint?vert_shader?frag_shader;
GLuint?program;


GLfloat?vVerts[12]?=?{?-500.0f?-500.0f?-800.0f
????????????????????????????????????????500.0f?-500.0f?-800.0f
????????????????????????????????????????????0.0f???500.0f?-800.0f
????????????????????????????????????????????0.0f???????0.0f?-300.0f?};

GLuint?element_index[]?=?{??0?1?2
???????????????????????????????????????????????0?1?3
???????????????????????????????????????????????0?3?2
???????????????????????????????????????????????1?2?3??};

GLfloat?modelMatrix[16]?=?{1.0?0.0?0.0?0.0
????????????????????????????????????????????????0.0?1.0?0.0?0.0
????????????????????????????????????????????????0.0?0.0?1.0?0.0
????????????????????????????????????????????????0.0?0.0?0.0?1.0};

GLfloat?viewMatrix[16]?=??{1.0?0.0?0.0?0.0
???????????????????????????????????????????????0.0?1.0?0.0?0.0
???????????????????????????????????????????????0.0?0.0?1.0?0.0
???????????????????????????????????????????????0.0?0.0?0.0?1.0};

GLfloat?projectionMat

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-04-14?13:16??SetPerspective\
?????文件?????????202??2016-09-23?10:56??SetPerspective\Identity.fp
?????文件?????????310??2016-09-23?14:11??SetPerspective\Identity.vp
?????文件????????6878??2016-10-10?13:13??SetPerspective\main.cpp
?????文件?????????322??2016-10-09?15:52??SetPerspective\Triangle.pro