📄 处理流水线1.cpp
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#include<windows.h>
#include<stdio.h>
#include<String.h>
#include<stdlib.h>
#include<GL\glaux.h>
#pragma comment(lib,"opengl32")
#pragma comment(lib,"glu32")
#pragma comment(lib,"glaux")
#define PIXEL_CENTER(x)((long)(x)+0.5)
#define GAP 10
#define ROWS 3
#define COLS 4
#define OPENGL_WIDTH 48
#define OPENGL_HEIGHT 13
static void Init(void);
static void CALLBACK Resize(int width,int height);
static void RotateColorMask(void);
static void CALLBACK KeyPress1(void);
static void CALLBACK KeyPress2(void);
static void CALLBACK KeyPress3(void);
static void Viewport(GLint row,GLint column);
static void Point(void);
static void Lines(void);
static void LineStrip(void);
static void LineLoop(void);
static void Bitmap(void);
static void Triangles(void);
static void TriangleStrip(void);
static void TriangleFan(void);
static void Rect(void);
static void xPolygon(void);
static void Quads(void);
static void QuadStrip(void);
static void CALLBACK Paint(void);
static GLenum Args(int argc,char **argv);
GLenum rgb,doubleBuffer,windType;
GLint windW,windH;
GLenum mode1,mode2;
GLint boxW,boxH;
GLubyte OpenGL_bits[]={
0x00,0x03,0x00,0x00,0x00,0x00,
0x7f,0xfb,0xff,0xff,0xff,0x01,
0x7f,0xfb,0xff,0xff,0xff,0x01,
0x00,0x03,0x00,0x00,0x00,0x00,
0x3e,0x8f,0xb7,0xf9,0xfc,0x01,
0x63,0xdb,0xb0,0x8b,0x0d,0x00,
0x63,0xdb,0xb7,0x8b,0x0d,0x00,
0x63,0xdb,0xb6,0x8b,0x0d,0x00,
0x63,0x8f,0xf3,0xcc,0x0d,0x00,
0x63,0x00,0x00,0x0c,0x4c,0x0a,
0x63,0x00,0x00,0x0c,0x4c,0x0e,
0x63,0x00,0x00,0x8c,0xed,0x0e,
0x3e,0x00,0x00,0xf8,0x0c,0x00,
};
/////////////////////////////////////////////////////////////////////
static void Init(void)
{
mode1=GL_TRUE;
mode2=GL_TRUE;
}
/////////////////////////////////////////////////////////////////////
static void CALLBACK Resize(int width,int height)
{
windW=(GLint)width;
windH=(GLint)height;
}
/////////////////////////////////////////////////////////////////////
static void RotateColorMask(void)
{
static GLint rotation=0;
rotation=(rotation+1)&0x3;
switch(rotation)
{
case 0:
glColorMask(GL_TRUE,GL_TRUE,GL_TRUE,GL_TRUE);
glIndexMask(0xff);
break;
case 1:
glColorMask(GL_TRUE,GL_TRUE,GL_TRUE,GL_TRUE);
glIndexMask(0xFE);
break;
case 2:
glColorMask(GL_TRUE,GL_TRUE,GL_TRUE,GL_TRUE);
glIndexMask(0xfd);
break;
case 3:
glColorMask(GL_TRUE,GL_TRUE,GL_TRUE,GL_TRUE);
glIndexMask(0xfb);
break;
}
}
/////////////////////////////////////////////////////////////////////
static void CALLBACK KeyPress1(void)
{
mode1=!mode1;
}
/////////////////////////////////////////////////////////////////////
static void CALLBACK KeyPress2(void)
{
mode2=!mode2;
}
/////////////////////////////////////////////////////////////////////
static void CALLBACK KeyPress3(void)
{
RotateColorMask();
}
/////////////////////////////////////////////////////////////////////
static void Viewport(GLint row,GLint column)
{
GLint x,y;
boxW=(windW-(COLS+1)*GAP)/COLS;
boxH=(windH-(ROWS+1)*GAP)/ROWS;
x=GAP+column*(boxW+GAP);
y=GAP+row*(boxH+GAP);
glViewport(x,y,boxW,boxH);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(-boxW/2,boxW/2,-boxH/2,boxH/2,0.0,1.0);
glMatrixMode(GL_MODELVIEW);
glEnable(GL_SCISSOR_TEST);
glScissor(x,y,boxW,boxH);
}
/////////////////////////////////////////////////////////////////////
static void Point(void)
{
GLint i;
glBegin(GL_POINTS);
AUX_SETCOLOR(windType,AUX_WHITE);
glVertex2i(0,0);
for(i=1;i<8;i++)
{
GLint j=i*2;
AUX_SETCOLOR(windType,i+AUX_RED-1);
glVertex2i(-j,-j);
glVertex2i(-j,0);
glVertex2i(-j,j);
glVertex2i(0,j);
glVertex2i(j,j);
glVertex2i(j,0);
glVertex2i(j,-j);
glVertex2i(0,-j);
}
glEnd();
}
/////////////////////////////////////////////////////////////////////
static void Lines(void)
{
GLint i;
glPushMatrix();
glTranslatef(-12,0,0);
for(i=1;i<8;i++)
{
AUX_SETCOLOR(windType,i+AUX_RED-1);
glBegin(GL_LINES);
glVertex2i(-boxW/4,-boxH/4);
glVertex2i(boxW/4,boxH/4);
glEnd();
glTranslatef(4,0,0);
}
glPopMatrix();
glBegin(GL_LINES);
glVertex2i(0,0);
glEnd();
}
/////////////////////////////////////////////////////////////////////
static void LineStrip(void)
{
glBegin(GL_LINE_STRIP);
AUX_SETCOLOR(windType,AUX_RED);
glVertex2f(PIXEL_CENTER(-boxW/4),PIXEL_CENTER(-boxH/4));
AUX_SETCOLOR(windType,AUX_GREEN);
glVertex2f(PIXEL_CENTER(-boxW/4),PIXEL_CENTER(boxH/4));
AUX_SETCOLOR(windType,AUX_BLUE);
glVertex2f(PIXEL_CENTER(boxW/4),PIXEL_CENTER(boxH/4));
AUX_SETCOLOR(windType,AUX_WHITE);
glVertex2f(PIXEL_CENTER(boxW/4),PIXEL_CENTER(-boxH/4));
glEnd();
glBegin(GL_LINE_STRIP);
glVertex2i(0,0);
glEnd();
}
/////////////////////////////////////////////////////////////////////
static void LineLoop(void)
{
glBegin(GL_LINE_LOOP);
AUX_SETCOLOR(windType,AUX_RED);
glVertex2f(PIXEL_CENTER(-boxW/4),PIXEL_CENTER(-boxH/4));
AUX_SETCOLOR(windType,AUX_GREEN);
glVertex2f(PIXEL_CENTER(-boxW/4),PIXEL_CENTER(boxH/4));
AUX_SETCOLOR(windType,AUX_BLUE);
glVertex2f(PIXEL_CENTER(boxW/4),PIXEL_CENTER(boxH/4));
AUX_SETCOLOR(windType,AUX_WHITE);
glVertex2f(PIXEL_CENTER(boxW/4),PIXEL_CENTER(-boxH/4));
glEnd();
glEnable(GL_LOGIC_OP);
glLogicOp(GL_XOR);
glEnable(GL_BLEND);
glBlendFunc(GL_ONE,GL_ONE);
AUX_SETCOLOR(windType,AUX_MAGENTA);
glBegin(GL_LINE_LOOP);
glVertex2f(PIXEL_CENTER(-boxW/8),PIXEL_CENTER(-boxH/8));
glVertex2f(PIXEL_CENTER(-boxW/8),PIXEL_CENTER(boxH/8));
glEnd();
glBegin(GL_LINE_LOOP);
glVertex2f(PIXEL_CENTER(-boxW/8),PIXEL_CENTER(boxH/8+5));
glVertex2f(PIXEL_CENTER(boxW/8),PIXEL_CENTER(boxH/8+5));
glEnd();
glDisable(GL_LOGIC_OP);
glDisable(GL_BLEND);
AUX_SETCOLOR(windType,AUX_GREEN);
glBegin(GL_POINTS);
glVertex2i(0,0);
glEnd();
glBegin(GL_LINE_LOOP);
glVertex2i(0,0);
glEnd();
}
/////////////////////////////////////////////////////////////////////
static void Bitmap(void)
{
glBegin(GL_LINES);
AUX_SETCOLOR(windType,AUX_GREEN);
glVertex2i(-boxW/2,0);
glVertex2i(boxW/2,0);
glVertex2i(0,-boxH/2);
glVertex2i(0,boxH/2);
AUX_SETCOLOR(windType,AUX_RED);
glVertex2i(0,-3);
glVertex2i(0,-3+OPENGL_HEIGHT);
AUX_SETCOLOR(windType,AUX_BLUE);
glVertex2i(0,-3);
glVertex2i(OPENGL_WIDTH,-3);
glEnd();
AUX_SETCOLOR(windType,AUX_GREEN);
glPixelStorei(GL_UNPACK_LSB_FIRST,GL_TRUE);
glPixelStorei(GL_UNPACK_ALIGNMENT,1);
glRasterPos2i(0,0);
glBitmap(OPENGL_WIDTH,OPENGL_HEIGHT,0,3,0.0,0.0,OpenGL_bits);
}
/////////////////////////////////////////////////////////////////////
static void Triangles(void)
{
glBegin(GL_TRIANGLES);
AUX_SETCOLOR(windType,AUX_GREEN);
glVertex2i(-boxW/4,-boxH/4);
AUX_SETCOLOR(windType,AUX_RED);
glVertex2i(-boxW/8,-boxH/16);
AUX_SETCOLOR(windType,AUX_BLUE);
glVertex2i(boxW/8,-boxH/16);
AUX_SETCOLOR(windType,AUX_GREEN);
glVertex2i(-boxW/4,boxH/4);
AUX_SETCOLOR(windType,AUX_RED);
glVertex2i(-boxW/8,boxH/16);
AUX_SETCOLOR(windType,AUX_BLUE);
glVertex2i(boxW/8,boxH/16);
glEnd();
glBegin(GL_TRIANGLES);
glVertex2i(0,0);
glVertex2i(-100,100);
glEnd();
}
/////////////////////////////////////////////////////////////////////
static void TriangleStrip(void)
{
glBegin(GL_TRIANGLE_STRIP);
AUX_SETCOLOR(windType,AUX_GREEN);
glVertex2i(-boxW/4,-boxH/4);
AUX_SETCOLOR(windType,AUX_RED);
glVertex2i(-boxW/4,boxH/4);
AUX_SETCOLOR(windType,AUX_BLUE);
glVertex2i(0,-boxH/4);
AUX_SETCOLOR(windType,AUX_WHITE);
glVertex2i(0,boxH/4);
AUX_SETCOLOR(windType,AUX_CYAN);
glVertex2i(boxW/4,boxH/4);
AUX_SETCOLOR(windType,AUX_YELLOW);
glVertex2i(boxW/4,boxH/4);
glEnd();
glBegin(GL_TRIANGLE_STRIP);
glVertex2i(0,0);
glVertex2i(-100,100);
glEnd();
}
/////////////////////////////////////////////////////////////////////
static void TriangleFan(void)
{
GLint vx[8][2];
GLint x0,y0,x1,y1,x2,y2,x3,y3;
GLint i;
y0=-boxH/4;
y1=y0+boxH/2/3;
y2=y1+boxH/2/3;
y3=boxH/4;
x0=-boxW/4;
x1=x0+boxW/2/3;
x2=x1+boxW/2/3;
x3=boxW/4;
vx[0][0]=x0;vx[0][1]=y1;
vx[1][0]=x0;vx[1][1]=y2;
vx[2][0]=x1;vx[2][1]=y3;
vx[3][0]=x2;vx[3][1]=y3;
vx[4][0]=x3;vx[4][1]=y2;
vx[5][0]=x3;vx[5][1]=y1;
vx[6][0]=x2;vx[6][1]=y0;
vx[7][0]=x1;vx[7][1]=y0;
glBegin(GL_TRIANGLE_FAN);
AUX_SETCOLOR(windType,AUX_WHITE);
glVertex2i(0,0);
for(i=0;i<8;i++)
{
AUX_SETCOLOR(windType,AUX_WHITE-i);
glVertex2iv(vx[i]);
}
glEnd();
glBegin(GL_TRIANGLE_FAN);
glVertex2i(0,0);
glVertex2i(-100,100);
glEnd();
}
/////////////////////////////////////////////////////////////////////
static void Rect(void)
{
AUX_SETCOLOR(windType,AUX_GREEN);
glRecti(-boxW/4,-boxH/4,boxW/4,boxH/4);
}
/////////////////////////////////////////////////////////////////////
static void xPolygon(void)
{
GLint vx[8][2];
GLint x0,y0,x1,y1,x2,y2,x3,y3;
GLint i;
y0=-boxH/4;
y1=y0+boxH/2/3;
y2=y1+boxH/2/3;
y3=boxH/4;
x0=-boxW/4;
x1=x0+boxW/2/3;
x2=x1+boxW/2/3;
x3=boxW/4;
vx[0][0]=x0;vx[0][1]=y1;
vx[1][0]=x0;vx[1][1]=y2;
vx[2][0]=x1;vx[2][1]=y3;
vx[3][0]=x2;vx[3][1]=y3;
vx[4][0]=x3;vx[4][1]=y2;
vx[5][0]=x3;vx[5][1]=y1;
vx[6][0]=x2;vx[6][1]=y0;
vx[7][0]=x1;vx[7][1]=y0;
glBegin(GL_POLYGON);
for(i=0;i<8;i++)
{
AUX_SETCOLOR(windType,AUX_WHITE-i);
glVertex2iv(vx[i]);
}
glEnd();
glBegin(GL_POLYGON);
glVertex2i(0,0);
glVertex2i(-100,100);
glEnd();
}
/////////////////////////////////////////////////////////////////////
static void Quads(void)
{
glBegin(GL_QUADS);
AUX_SETCOLOR(windType,AUX_GREEN);
glVertex2i(-boxW/4,-boxH/4);
AUX_SETCOLOR(windType,AUX_RED);
glVertex2i(-boxW/8,-boxH/16);
AUX_SETCOLOR(windType,AUX_BLUE);
glVertex2i(boxW/8,-boxH/16);
AUX_SETCOLOR(windType,AUX_WHITE);
glVertex2i(boxW/4,-boxH/4);
AUX_SETCOLOR(windType,AUX_GREEN);
glVertex2i(-boxW/4,boxH/4);
AUX_SETCOLOR(windType,AUX_RED);
glVertex2i(-boxW/8,boxH/16);
AUX_SETCOLOR(windType,AUX_BLUE);
glVertex2i(boxW/8,boxH/16);
AUX_SETCOLOR(windType,AUX_WHITE);
glVertex2i(boxW/4,boxH/4);
glEnd();
glBegin(GL_QUADS);
glVertex2i(0,0);
glVertex2i(100,100);
glVertex2i(-100,100);
glEnd();
}
static void QuadStrip(void)
{
glBegin(GL_QUAD_STRIP);
AUX_SETCOLOR(windType,AUX_GREEN);
glVertex2i(-boxW/4,-boxH/4);
AUX_SETCOLOR(windType,AUX_RED);
glVertex2i(-boxW/4,boxH/4);
AUX_SETCOLOR(windType,AUX_BLUE);
glVertex2i(0,-boxH/4);
AUX_SETCOLOR(windType,AUX_WHITE);
glVertex2i(0,boxH/4);
AUX_SETCOLOR(windType,AUX_CYAN);
glVertex2i(boxW/4,boxH/4);
AUX_SETCOLOR(windType,AUX_YELLOW);
glVertex2i(boxW/4,boxH/4);
glEnd();
glBegin(GL_TRIANGLE_STRIP);
glVertex2i(0,0);
glVertex2i(100,100);
glVertex2i(-100,100);
glEnd();
}
/////////////////////////////////////////////////////////////////////
static void CALLBACK Paint(void)
{
glViewport(0,0,windW,windH);
glDisable(GL_SCISSOR_TEST);
glPushAttrib(GL_COLOR_BUFFER_BIT);
glColorMask(1,1,1,1);
glIndexMask((GLuint)~0);
glClearColor(0.0,0.0,0.0,0.0);
glClear(GL_COLOR_BUFFER_BIT);
glPopAttrib();
if(mode1)glShadeModel(GL_SMOOTH);
else glShadeModel(GL_FLAT);
if(mode2)glPolygonMode(GL_FRONT_AND_BACK,GL_FILL);
else glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
Viewport(0,0); Point();
Viewport(0,1); Lines();
Viewport(0,2); LineStrip();
Viewport(0,3); LineLoop();
Viewport(1,0); Bitmap();
Viewport(1,1); TriangleFan();
Viewport(1,2); Triangles();
Viewport(1,3); TriangleStrip();
Viewport(2,0); Rect();
Viewport(2,1); xPolygon();
Viewport(2,2); Quads();
Viewport(2,3); QuadStrip();
glFlush();
if(doubleBuffer)auxSwapBuffers();
}
static GLenum Args(int argc,char **argv)
{
GLint i;
rgb=GL_TRUE;
doubleBuffer=GL_FALSE;
for(i=1;i<argc;i++)
{
if(strcmp(argv[i],"-ci")==0)rgb==GL_FALSE;
else if(strcmp(argv[i],"-rgb")==0)rgb==GL_TRUE;
else if(strcmp(argv[i],"-sb")==0)doubleBuffer=GL_FALSE;
else if(strcmp(argv[i],"-db")==0)doubleBuffer=GL_TRUE;
else
{
//printf("%s(Bad option).\n",argv[i]);
return GL_FALSE;
}
}
return GL_TRUE;
}
/////////////////////////////////////////////////////////////////////
void main(int argc,char **argv)
{
if(Args(argc,argv)==GL_FALSE)auxQuit();
windW=600;
windH=300;
auxInitPosition(0,0,windW,windH);
windType|=(rgb)?AUX_RGB:AUX_INDEX;
windType|=(doubleBuffer)?AUX_DOUBLE:AUX_SINGLE;
auxInitDisplayMode(windType);
if(auxInitWindow("Primitive Test")==GL_FALSE)auxQuit();
Init();
auxExposeFunc((AUXEXPOSEPROC)Resize);
auxReshapeFunc((AUXRESHAPEPROC)Resize);
auxKeyFunc(AUX_1,KeyPress1);
auxKeyFunc(AUX_2,KeyPress2);
auxKeyFunc(AUX_3,KeyPress3);
auxMainLoop(Paint);
}
/////////////////////////////////////////////////////////////////////⌨️ 快捷键说明
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