+++ /dev/null
-
-/*
- * Test textured lines.
- *
- * Brian Paul
- * September 2000
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <math.h>
-#include <GL/glew.h>
-#include <GL/glut.h>
-#include "../util/readtex.c" /* I know, this is a hack. */
-
-#define TEXTURE_FILE "../images/girl.rgb"
-
-static GLboolean Antialias = GL_FALSE;
-static GLboolean Animate = GL_FALSE;
-static GLint Texture = 1;
-static GLboolean Stipple = GL_FALSE;
-static GLfloat LineWidth = 1.0;
-
-static GLfloat Xrot = -60.0, Yrot = 0.0, Zrot = 0.0;
-static GLfloat DYrot = 1.0;
-static GLboolean Points = GL_FALSE;
-static GLfloat Scale = 1.0;
-
-static void Idle( void )
-{
- if (Animate) {
- Zrot += DYrot;
- glutPostRedisplay();
- }
-}
-
-
-static void Display( void )
-{
- GLfloat x, y, s, t;
-
- glClear( GL_COLOR_BUFFER_BIT );
-
- glPushMatrix();
- glRotatef(Xrot, 1.0, 0.0, 0.0);
- glRotatef(Yrot, 0.0, 1.0, 0.0);
- glRotatef(Zrot, 0.0, 0.0, 1.0);
- glScalef(Scale, Scale, Scale);
-
- if (Texture)
- glColor3f(1, 1, 1);
-
- if (Points) {
- glBegin(GL_POINTS);
- for (t = 0.0; t <= 1.0; t += 0.025) {
- for (s = 0.0; s <= 1.0; s += 0.025) {
- x = s * 2.0 - 1.0;
- y = t * 2.0 - 1.0;
- if (!Texture)
- glColor3f(1, 0, 1);
- glMultiTexCoord2fARB(GL_TEXTURE1_ARB, t, s);
- glTexCoord2f(s, t);
- glVertex2f(x, y);
- }
- }
- glEnd();
- }
- else {
- glBegin(GL_LINES);
- for (t = 0.0; t <= 1.0; t += 0.025) {
- x = t * 2.0 - 1.0;
- if (!Texture)
- glColor3f(1, 0, 1);
- glTexCoord2f(t, 0.0);
- glMultiTexCoord2fARB(GL_TEXTURE1_ARB, 0.0, t);
- glVertex2f(x, -1.0);
- if (!Texture)
- glColor3f(0, 1, 0);
- glTexCoord2f(t, 1.0);
- glMultiTexCoord2fARB(GL_TEXTURE1_ARB, 1.0, t);
- glVertex2f(x, 1.0);
- }
- glEnd();
- }
-
- glPopMatrix();
-
- glutSwapBuffers();
-}
-
-
-static void Reshape( int width, int height )
-{
- GLfloat ar = (float) width / height;
- glViewport( 0, 0, width, height );
- glMatrixMode( GL_PROJECTION );
- glLoadIdentity();
- glFrustum( -ar, ar, -1.0, 1.0, 10.0, 100.0 );
- glMatrixMode( GL_MODELVIEW );
- glLoadIdentity();
- glTranslatef( 0.0, 0.0, -12.0 );
-}
-
-
-static void Key( unsigned char key, int x, int y )
-{
- (void) x;
- (void) y;
- switch (key) {
- case 'a':
- Antialias = !Antialias;
- if (Antialias) {
- glEnable(GL_LINE_SMOOTH);
- glEnable(GL_POINT_SMOOTH);
- glEnable(GL_BLEND);
- glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
- }
- else {
- glDisable(GL_LINE_SMOOTH);
- glDisable(GL_POINT_SMOOTH);
- glDisable(GL_BLEND);
- }
- break;
- case 't':
- Texture++;
- if (Texture > 2)
- Texture = 0;
- if (Texture == 0) {
- glActiveTextureARB(GL_TEXTURE0_ARB);
- glDisable(GL_TEXTURE_2D);
- glActiveTextureARB(GL_TEXTURE1_ARB);
- glDisable(GL_TEXTURE_2D);
- }
- else if (Texture == 1) {
- glActiveTextureARB(GL_TEXTURE0_ARB);
- glEnable(GL_TEXTURE_2D);
- glActiveTextureARB(GL_TEXTURE1_ARB);
- glDisable(GL_TEXTURE_2D);
- }
- else {
- glActiveTextureARB(GL_TEXTURE0_ARB);
- glEnable(GL_TEXTURE_2D);
- glActiveTextureARB(GL_TEXTURE1_ARB);
- glEnable(GL_TEXTURE_2D);
- }
- break;
- case 'w':
- LineWidth -= 0.25;
- if (LineWidth < 0.25)
- LineWidth = 0.25;
- glLineWidth(LineWidth);
- glPointSize(LineWidth);
- break;
- case 'W':
- LineWidth += 0.25;
- if (LineWidth > 8.0)
- LineWidth = 8.0;
- glLineWidth(LineWidth);
- glPointSize(LineWidth);
- break;
- case 'p':
- Points = !Points;
- break;
- case 's':
- Stipple = !Stipple;
- if (Stipple)
- glEnable(GL_LINE_STIPPLE);
- else
- glDisable(GL_LINE_STIPPLE);
- break;
- case ' ':
- Animate = !Animate;
- if (Animate)
- glutIdleFunc(Idle);
- else
- glutIdleFunc(NULL);
- break;
- case 27:
- exit(0);
- break;
- }
- printf("LineWidth, PointSize = %f\n", LineWidth);
- glutPostRedisplay();
-}
-
-
-static void SpecialKey( int key, int x, int y )
-{
- float step = 3.0;
- (void) x;
- (void) y;
-
- switch (key) {
- case GLUT_KEY_UP:
- Xrot += step;
- break;
- case GLUT_KEY_DOWN:
- Xrot -= step;
- break;
- case GLUT_KEY_LEFT:
- Yrot += step;
- break;
- case GLUT_KEY_RIGHT:
- Yrot -= step;
- break;
- }
- glutPostRedisplay();
-}
-
-
-static void Init( int argc, char *argv[] )
-{
- GLfloat r[2];
- GLuint u;
-
- for (u = 0; u < 2; u++) {
- glActiveTextureARB(GL_TEXTURE0_ARB + u);
- glBindTexture(GL_TEXTURE_2D, 10+u);
- if (u == 0)
- glEnable(GL_TEXTURE_2D);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-
- if (u == 0)
- glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
- else
- glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_ADD);
-
- glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
- if (!LoadRGBMipmaps(TEXTURE_FILE, GL_RGB)) {
- printf("Error: couldn't load texture image\n");
- exit(1);
- }
- }
-
- glLineStipple(1, 0xff);
-
- if (argc > 1 && strcmp(argv[1], "-info")==0) {
- printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
- printf("GL_VERSION = %s\n", (char *) glGetString(GL_VERSION));
- printf("GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR));
- printf("GL_EXTENSIONS = %s\n", (char *) glGetString(GL_EXTENSIONS));
- }
-
- glGetFloatv(GL_ALIASED_POINT_SIZE_RANGE, r);
- printf("Non-smooth point size range: %g .. %g\n", r[0], r[1]);
- glGetFloatv(GL_POINT_SIZE_RANGE, r);
- printf("Smoothed point size range: %g .. %g\n", r[0], r[1]);
- glGetFloatv(GL_ALIASED_LINE_WIDTH_RANGE, r);
- printf("Non-smooth line width range: %g .. %g\n", r[0], r[1]);
- glGetFloatv(GL_LINE_WIDTH_RANGE, r);
- printf("Smoothed line width range: %g .. %g\n", r[0], r[1]);
-}
-
-
-int main( int argc, char *argv[] )
-{
- glutInit( &argc, argv );
- glutInitWindowPosition(0, 0);
- glutInitWindowSize( 400, 300 );
-
- glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE );
-
- glutCreateWindow(argv[0] );
- glewInit();
-
- Init(argc, argv);
-
- glutReshapeFunc( Reshape );
- glutKeyboardFunc( Key );
- glutSpecialFunc( SpecialKey );
- glutDisplayFunc( Display );
- if (Animate)
- glutIdleFunc( Idle );
-
- glutMainLoop();
- return 0;
-}
projects / mesa.git / blobdiff