diff options
Diffstat (limited to 'progs/tests/antialias.c')
-rw-r--r-- | progs/tests/antialias.c | 237 |
1 files changed, 0 insertions, 237 deletions
diff --git a/progs/tests/antialias.c b/progs/tests/antialias.c deleted file mode 100644 index c389bbea3a..0000000000 --- a/progs/tests/antialias.c +++ /dev/null @@ -1,237 +0,0 @@ -/* $Id: antialias.c,v 1.2 2003/03/29 16:42:57 brianp Exp $ */ - -/* - * Test multisampling and polygon smoothing. - * - * Brian Paul - * 4 November 2002 - */ - -#include <stdio.h> -#include <stdlib.h> -#include <math.h> -#include <GL/glut.h> - - -static GLfloat Zrot = 0; -static GLboolean Anim = GL_TRUE; -static GLboolean HaveMultisample = GL_TRUE; -static GLboolean DoMultisample = GL_TRUE; - - -static void -PrintString(const char *s) -{ - while (*s) { - glutBitmapCharacter(GLUT_BITMAP_8_BY_13, (int) *s); - s++; - } -} - - -static void -Polygon( GLint verts, GLfloat radius, GLfloat z ) -{ - int i; - for (i = 0; i < verts; i++) { - float a = (i * 2.0 * 3.14159) / verts; - float x = radius * cos(a); - float y = radius * sin(a); - glVertex3f(x, y, z); - } -} - - -static void -DrawObject( void ) -{ - glLineWidth(3.0); - glColor3f(1, 1, 1); - glBegin(GL_LINE_LOOP); - Polygon(12, 1.2, 0); - glEnd(); - - glLineWidth(1.0); - glColor3f(1, 1, 1); - glBegin(GL_LINE_LOOP); - Polygon(12, 1.1, 0); - glEnd(); - - glColor3f(1, 0, 0); - glBegin(GL_POLYGON); - Polygon(12, 0.4, 0.3); - glEnd(); - - glColor3f(0, 1, 0); - glBegin(GL_POLYGON); - Polygon(12, 0.6, 0.2); - glEnd(); - - glColor3f(0, 0, 1); - glBegin(GL_POLYGON); - Polygon(12, 0.8, 0.1); - glEnd(); - - glColor3f(1, 1, 1); - glBegin(GL_POLYGON); - Polygon(12, 1.0, 0); - glEnd(); -} - - -static void -Display( void ) -{ - glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); - - glColor3f(1, 1, 1); - if (HaveMultisample) { - glRasterPos2f(-3.1, -1.6); - if (DoMultisample) - PrintString("MULTISAMPLE"); - else - PrintString("MULTISAMPLE (off)"); - } - glRasterPos2f(-0.8, -1.6); - PrintString("No antialiasing"); - glRasterPos2f(1.6, -1.6); - PrintString("GL_POLYGON_SMOOTH"); - - /* multisample */ - if (HaveMultisample) { - glEnable(GL_DEPTH_TEST); - if (DoMultisample) - glEnable(GL_MULTISAMPLE_ARB); - glPushMatrix(); - glTranslatef(-2.5, 0, 0); - glPushMatrix(); - glRotatef(Zrot, 0, 0, 1); - DrawObject(); - glPopMatrix(); - glPopMatrix(); - glDisable(GL_MULTISAMPLE_ARB); - glDisable(GL_DEPTH_TEST); - } - - /* non-aa */ - glEnable(GL_DEPTH_TEST); - glPushMatrix(); - glTranslatef(0, 0, 0); - glPushMatrix(); - glRotatef(Zrot, 0, 0, 1); - DrawObject(); - glPopMatrix(); - glPopMatrix(); - glDisable(GL_DEPTH_TEST); - - /* polygon smooth */ - glEnable(GL_POLYGON_SMOOTH); - glEnable(GL_LINE_SMOOTH); - glEnable(GL_BLEND); - glPushMatrix(); - glTranslatef(2.5, 0, 0); - glPushMatrix(); - glRotatef(Zrot, 0, 0, 1); - DrawObject(); - glPopMatrix(); - glPopMatrix(); - glDisable(GL_LINE_SMOOTH); - glDisable(GL_POLYGON_SMOOTH); - glDisable(GL_BLEND); - - glutSwapBuffers(); -} - - -static void -Reshape( int width, int height ) -{ - GLfloat ar = (float) width / (float) height; - glViewport( 0, 0, width, height ); - glMatrixMode( GL_PROJECTION ); - glLoadIdentity(); - glOrtho(-2.0*ar, 2.0*ar, -2.0, 2.0, -1.0, 1.0); - glMatrixMode( GL_MODELVIEW ); - glLoadIdentity(); -} - - -static void -Idle( void ) -{ - Zrot = 0.01 * glutGet(GLUT_ELAPSED_TIME); - glutPostRedisplay(); -} - - -static void -Key( unsigned char key, int x, int y ) -{ - const GLfloat step = 1.0; - (void) x; - (void) y; - switch (key) { - case 'a': - Anim = !Anim; - if (Anim) - glutIdleFunc(Idle); - else - glutIdleFunc(NULL); - break; - case 'm': - DoMultisample = !DoMultisample; - break; - case 'z': - Zrot = (int) (Zrot - step); - break; - case 'Z': - Zrot = (int) (Zrot + step); - break; - case 27: - exit(0); - break; - } - glutPostRedisplay(); -} - - -static void -Init( void ) -{ - /* GLUT imposes the four samples/pixel requirement */ - int s; - glGetIntegerv(GL_SAMPLES_ARB, &s); - if (!glutExtensionSupported("GL_ARB_multisample") || s < 1) { - printf("Warning: multisample antialiasing not supported.\n"); - HaveMultisample = GL_FALSE; - } - printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER)); - printf("GL_SAMPLES_ARB = %d\n", s); - - glBlendFunc(GL_SRC_ALPHA, GL_ONE); - glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); - glBlendFunc(GL_SRC_ALPHA_SATURATE, GL_ONE); - - glGetIntegerv(GL_MULTISAMPLE_ARB, &s); - printf("GL_MULTISAMPLE_ARB = %d\n", s); -} - - -int -main( int argc, char *argv[] ) -{ - glutInit( &argc, argv ); - glutInitWindowPosition( 0, 0 ); - glutInitWindowSize( 600, 300 ); - glutInitDisplayMode( GLUT_RGB | GLUT_ALPHA | GLUT_DOUBLE | - GLUT_DEPTH | GLUT_MULTISAMPLE ); - glutCreateWindow(argv[0]); - glutReshapeFunc( Reshape ); - glutKeyboardFunc( Key ); - glutDisplayFunc( Display ); - if (Anim) - glutIdleFunc( Idle ); - Init(); - glutMainLoop(); - return 0; -} |