summaryrefslogtreecommitdiff
path: root/progs/tests
diff options
context:
space:
mode:
authorBrian Paul <brian.paul@tungstengraphics.com>2000-09-30 18:48:33 +0000
committerBrian Paul <brian.paul@tungstengraphics.com>2000-09-30 18:48:33 +0000
commit22f1ca0131fef434473b95b1dc3a2bec43376992 (patch)
tree0d1871dae4456a6afbb99b840969325889f1e917 /progs/tests
parent9c05c0494d06dcf429d8489107be49e339305690 (diff)
textured line test
Diffstat (limited to 'progs/tests')
-rw-r--r--progs/tests/texline.c196
1 files changed, 196 insertions, 0 deletions
diff --git a/progs/tests/texline.c b/progs/tests/texline.c
new file mode 100644
index 0000000000..1f5cd3f31f
--- /dev/null
+++ b/progs/tests/texline.c
@@ -0,0 +1,196 @@
+/* $Id: texline.c,v 1.1 2000/09/30 18:48:33 brianp Exp $ */
+
+/*
+ * Test textured lines.
+ *
+ * Brian Paul
+ * September 2000
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.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_TRUE;
+static GLboolean Texture = GL_TRUE;
+static GLfloat LineWidth = 1.0;
+
+static GLfloat Xrot = -60.0, Yrot = 0.0, Zrot = 0.0;
+static GLfloat DYrot = 1.0;
+
+
+static void Idle( void )
+{
+ if (Animate) {
+ Zrot += DYrot;
+ glutPostRedisplay();
+ }
+}
+
+
+static void Display( void )
+{
+ GLfloat x, 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);
+
+ glColor3f(1, 1, 1);
+ glBegin(GL_LINES);
+ for (t = 0.0; t <= 1.0; t += 0.0125) {
+ x = t * 2.0 - 1.0;
+ glTexCoord2f(t, 0.0); glVertex2f(x, -1.0);
+ glTexCoord2f(t, 1.0); 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_BLEND);
+ glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+ }
+ else {
+ glDisable(GL_LINE_SMOOTH);
+ glDisable(GL_BLEND);
+ }
+ break;
+ case 't':
+ Texture = !Texture;
+ if (Texture)
+ glEnable(GL_TEXTURE_2D);
+ else
+ glDisable(GL_TEXTURE_2D);
+ break;
+ case 'w':
+ LineWidth -= 0.25;
+ if (LineWidth < 0.25)
+ LineWidth = 0.25;
+ glLineWidth(LineWidth);
+ break;
+ case 'W':
+ LineWidth += 0.25;
+ if (LineWidth > 8.0)
+ LineWidth = 8.0;
+ glLineWidth(LineWidth);
+ break;
+ case ' ':
+ Animate = !Animate;
+ if (Animate)
+ glutIdleFunc(Idle);
+ else
+ glutIdleFunc(NULL);
+ break;
+ case 27:
+ exit(0);
+ break;
+ }
+ printf("Width %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[] )
+{
+ 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);
+
+ glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+
+ glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+ if (!LoadRGBMipmaps(TEXTURE_FILE, GL_RGB)) {
+ printf("Error: couldn't load texture image\n");
+ exit(1);
+ }
+
+ 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));
+ }
+}
+
+
+int main( int argc, char *argv[] )
+{
+ glutInit( &argc, argv );
+ glutInitWindowSize( 400, 300 );
+
+ glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE );
+
+ glutCreateWindow(argv[0] );
+
+ Init(argc, argv);
+
+ glutReshapeFunc( Reshape );
+ glutKeyboardFunc( Key );
+ glutSpecialFunc( SpecialKey );
+ glutDisplayFunc( Display );
+ glutIdleFunc( Idle );
+
+ glutMainLoop();
+ return 0;
+}