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/*
* (c) Copyright 1993, Silicon Graphics, Inc. * ALL RIGHTS RESERVED * Permission to use, copy, modify, and distribute this software for * any purpose and without fee is hereby granted, provided that the above * copyright notice appear in all copies and that both the copyright notice * and this permission notice appear in supporting documentation, and that * the name of Silicon Graphics, Inc. not be used in advertising * or publicity pertaining to distribution of the software without specific, * written prior permission. * * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS" * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE, * INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR * FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON * GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT, * SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY * KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION, * LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF * THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC. HAS BEEN * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE. * * US Government Users Restricted Rights * Use, duplication, or disclosure by the Government is subject to * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph * (c)(1)(ii) of the Rights in Technical Data and Computer Software * clause at DFARS 252.227-7013 and/or in similar or successor * clauses in the FAR or the DOD or NASA FAR Supplement. * Unpublished-- rights reserved under the copyright laws of the * United States. Contractor/manufacturer is Silicon Graphics, * Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311. * * OpenGL(TM) is a trademark of Silicon Graphics, Inc. */#include <stdio.h>
#include <string.h>
//#include <unistd.h>
#include <stdlib.h>
#include "tk.h"
#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
GLenum rgb, doubleBuffer, directRender, 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, 0x8d, 0x0d, 0x00, 0x63, 0xdb, 0xb7, 0x8d, 0x0d, 0x00, 0x63, 0xdb, 0xb6, 0x8d, 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 Reshape(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_FALSE, GL_TRUE, GL_TRUE, GL_TRUE); glIndexMask(0xFE); break; case 2: glColorMask(GL_TRUE, GL_FALSE, GL_TRUE, GL_TRUE); glIndexMask(0xFD); break; case 3: glColorMask(GL_TRUE, GL_TRUE, GL_FALSE, GL_TRUE); glIndexMask(0xEF); break; }}
static GLenum Key(int key, GLenum mask){
switch (key) { case TK_ESCAPE: tkQuit(); case TK_1: mode1 = !mode1; break; case TK_2: mode2 = !mode2; break; case TK_3: RotateColorMask(); break; default: return GL_FALSE; } return GL_TRUE;}
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); TK_SETCOLOR(windType, TK_WHITE); glVertex2i(0, 0); for (i = 1; i < 8; i++) { GLint j = i * 2; TK_SETCOLOR(windType, i + TK_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++) { TK_SETCOLOR(windType, i + TK_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); TK_SETCOLOR(windType, TK_RED); glVertex2f(PIXEL_CENTER(-boxW/4), PIXEL_CENTER(-boxH/4)); TK_SETCOLOR(windType, TK_GREEN); glVertex2f(PIXEL_CENTER(-boxW/4), PIXEL_CENTER(boxH/4)); TK_SETCOLOR(windType, TK_BLUE); glVertex2f(PIXEL_CENTER(boxW/4), PIXEL_CENTER(boxH/4)); TK_SETCOLOR(windType, TK_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); TK_SETCOLOR(windType, TK_RED); glVertex2f(PIXEL_CENTER(-boxW/4), PIXEL_CENTER(-boxH/4)); TK_SETCOLOR(windType, TK_GREEN); glVertex2f(PIXEL_CENTER(-boxW/4), PIXEL_CENTER(boxH/4)); TK_SETCOLOR(windType, TK_BLUE); glVertex2f(PIXEL_CENTER(boxW/4), PIXEL_CENTER(boxH/4)); TK_SETCOLOR(windType, TK_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);
TK_SETCOLOR(windType, TK_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);
TK_SETCOLOR(windType, TK_GREEN); glBegin(GL_POINTS); glVertex2i(0, 0); glEnd();
glBegin(GL_LINE_LOOP); glVertex2i(0, 0); glEnd();}
static void Bitmap(void){
glBegin(GL_LINES); TK_SETCOLOR(windType, TK_GREEN); glVertex2i(-boxW/2, 0); glVertex2i(boxW/2, 0); glVertex2i(0, -boxH/2); glVertex2i(0, boxH/2); TK_SETCOLOR(windType, TK_RED); glVertex2i(0, -3); glVertex2i(0, -3+OPENGL_HEIGHT); TK_SETCOLOR(windType, TK_BLUE); glVertex2i(0, -3); glVertex2i(OPENGL_WIDTH, -3); glEnd();
TK_SETCOLOR(windType, TK_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); TK_SETCOLOR(windType, TK_GREEN); glVertex2i(-boxW/4, -boxH/4); TK_SETCOLOR(windType, TK_RED); glVertex2i(-boxW/8, -boxH/16); TK_SETCOLOR(windType, TK_BLUE); glVertex2i(boxW/8, -boxH/16);
TK_SETCOLOR(windType, TK_GREEN); glVertex2i(-boxW/4, boxH/4); TK_SETCOLOR(windType, TK_RED); glVertex2i(-boxW/8, boxH/16); TK_SETCOLOR(windType, TK_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); TK_SETCOLOR(windType, TK_GREEN); glVertex2i(-boxW/4, -boxH/4); TK_SETCOLOR(windType, TK_RED); glVertex2i(-boxW/4, boxH/4); TK_SETCOLOR(windType, TK_BLUE); glVertex2i(0, -boxH/4); TK_SETCOLOR(windType, TK_WHITE); glVertex2i(0, boxH/4); TK_SETCOLOR(windType, TK_CYAN); glVertex2i(boxW/4, -boxH/4); TK_SETCOLOR(windType, TK_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); TK_SETCOLOR(windType, TK_WHITE); glVertex2i(0, 0); for (i = 0; i < 8; i++) { TK_SETCOLOR(windType, TK_WHITE-i); glVertex2iv(vx[i]); } glEnd();
glBegin(GL_TRIANGLE_FAN); glVertex2i(0, 0); glVertex2i(-100, 100); glEnd();}
static void Rect(void){
TK_SETCOLOR(windType, TK_GREEN); glRecti(-boxW/4, -boxH/4, boxW/4, boxH/4);}
static void tprimPolygon(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++) { TK_SETCOLOR(windType, TK_WHITE-i); glVertex2iv(vx[i]); } glEnd();
glBegin(GL_POLYGON); glVertex2i(0, 0); glVertex2i(100, 100); glEnd();}
static void Quads(void){
glBegin(GL_QUADS); TK_SETCOLOR(windType, TK_GREEN); glVertex2i(-boxW/4, -boxH/4); TK_SETCOLOR(windType, TK_RED); glVertex2i(-boxW/8, -boxH/16); TK_SETCOLOR(windType, TK_BLUE); glVertex2i(boxW/8, -boxH/16); TK_SETCOLOR(windType, TK_WHITE); glVertex2i(boxW/4, -boxH/4);
TK_SETCOLOR(windType, TK_GREEN); glVertex2i(-boxW/4, boxH/4); TK_SETCOLOR(windType, TK_RED); glVertex2i(-boxW/8, boxH/16); TK_SETCOLOR(windType, TK_BLUE); glVertex2i(boxW/8, boxH/16); TK_SETCOLOR(windType, TK_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); TK_SETCOLOR(windType, TK_GREEN); glVertex2i(-boxW/4, -boxH/4); TK_SETCOLOR(windType, TK_RED); glVertex2i(-boxW/4, boxH/4); TK_SETCOLOR(windType, TK_BLUE); glVertex2i(0, -boxH/4); TK_SETCOLOR(windType, TK_WHITE); glVertex2i(0, boxH/4); TK_SETCOLOR(windType, TK_CYAN); glVertex2i(boxW/4, -boxH/4); TK_SETCOLOR(windType, TK_YELLOW); glVertex2i(boxW/4, boxH/4); glEnd();
glBegin(GL_QUAD_STRIP); glVertex2i(0, 0); glVertex2i(100, 100); glVertex2i(-100, 100); glEnd();}
static void Draw(void){
glViewport(0, 0, windW, windH); glDisable(GL_SCISSOR_TEST);
glPushAttrib(GL_COLOR_BUFFER_BIT);
glColorMask(1, 1, 1, 1); glIndexMask(~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); tprimPolygon(); Viewport(2, 2); Quads(); Viewport(2, 3); QuadStrip();
glFlush();
if (doubleBuffer) { tkSwapBuffers(); }}
static GLenum Args(int argc, char **argv){ GLint i;
rgb = GL_TRUE; doubleBuffer = GL_FALSE; directRender = 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 if (strcmp(argv[i], "-dr") == 0) { directRender = GL_TRUE; } else if (strcmp(argv[i], "-ir") == 0) { directRender = GL_FALSE; } 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) { tkQuit(); }
windW = 600; windH = 300; tkInitPosition(0, 0, windW, windH);
windType = TK_ALPHA; windType |= (rgb) ? TK_RGB : TK_INDEX; windType |= (doubleBuffer) ? TK_DOUBLE : TK_SINGLE; windType |= (directRender) ? TK_DIRECT : TK_INDIRECT; tkInitDisplayMode(windType);
if (tkInitWindow("Primitive Test") == GL_FALSE) { tkQuit(); }
Init();
tkExposeFunc(Reshape); tkReshapeFunc(Reshape); tkKeyDownFunc(Key); tkDisplayFunc(Draw); tkExec();}
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