diff options
Diffstat (limited to 'progs/tests/tex1d.c')
-rw-r--r-- | progs/tests/tex1d.c | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/progs/tests/tex1d.c b/progs/tests/tex1d.c deleted file mode 100644 index 1fab849dd3e..00000000000 --- a/progs/tests/tex1d.c +++ /dev/null @@ -1,139 +0,0 @@ - -/* Exercise 1D textures - */ - -#include <assert.h> -#include <math.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include "GL/glut.h" - -static GLuint Window = 0; -static GLuint TexObj[2]; -static GLfloat Angle = 0.0f; - - -static void draw( void ) -{ - glClear( GL_COLOR_BUFFER_BIT ); - - glColor3f( 1.0, 1.0, 1.0 ); - - /* draw first polygon */ - glPushMatrix(); - glTranslatef( -1.0, 0.0, 0.0 ); - glRotatef( Angle, 0.0, 0.0, 1.0 ); - glBindTexture( GL_TEXTURE_1D, TexObj[0] ); - glBegin( GL_POLYGON ); - glTexCoord1f( 0.0 ); glVertex2f( -1.0, -1.0 ); - glTexCoord1f( 1.0 ); glVertex2f( 1.0, -1.0 ); - glTexCoord1f( 1.0 ); glVertex2f( 1.0, 1.0 ); - glTexCoord1f( 0.0 ); glVertex2f( -1.0, 1.0 ); - glEnd(); - glPopMatrix(); - - glutSwapBuffers(); -} - - - -static void idle( void ) -{ - Angle += 2.0; - glutPostRedisplay(); -} - - - -/* change view Angle, exit upon ESC */ -static void key(unsigned char k, int x, int y) -{ - (void) x; - (void) y; - switch (k) { - case 27: - exit(0); - } -} - - - -/* new window size or exposure */ -static void reshape( int width, int height ) -{ - glViewport(0, 0, (GLint)width, (GLint)height); - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - /* glOrtho( -3.0, 3.0, -3.0, 3.0, -10.0, 10.0 );*/ - glFrustum( -2.0, 2.0, -2.0, 2.0, 6.0, 20.0 ); - glMatrixMode(GL_MODELVIEW); - glLoadIdentity(); - glTranslatef( 0.0, 0.0, -8.0 ); -} - - -static void init( void ) -{ - GLubyte tex[256][3]; - GLint i; - - - glDisable( GL_DITHER ); - - /* Setup texturing */ - glEnable( GL_TEXTURE_1D ); - glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL ); - - - /* generate texture object IDs */ - glGenTextures( 2, TexObj ); - - /* setup first texture object */ - glBindTexture( GL_TEXTURE_1D, TexObj[0] ); - - - for (i = 0; i < 256; i++) { - GLfloat f; - - /* map 0..255 to -PI .. PI */ - f = ((i / 255.0) - .5) * (3.141592 * 2); - - f = sin(f); - - /* map -1..1 to 0..255 */ - tex[i][0] = (f+1.0)/2.0 * 255.0; - tex[i][1] = 0; - tex[i][2] = 0; - } - - glTexImage1D( GL_TEXTURE_1D, 0, 3, 256, 0, GL_RGB, GL_UNSIGNED_BYTE, tex ); - glTexParameteri( GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_NEAREST ); - glTexParameteri( GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_NEAREST ); - glTexParameteri( GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_REPEAT ); - glTexParameteri( GL_TEXTURE_1D, GL_TEXTURE_WRAP_T, GL_REPEAT ); -} - - - -int main( int argc, char *argv[] ) -{ - glutInit(&argc, argv); - glutInitWindowPosition(0, 0); - glutInitWindowSize(300, 300); - glutInitDisplayMode( GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE ); - - Window = glutCreateWindow("Texture Objects"); - if (!Window) { - exit(1); - } - - init(); - - glutReshapeFunc( reshape ); - glutKeyboardFunc( key ); -/* glutIdleFunc( idle ); */ - glutDisplayFunc( draw ); - glutMainLoop(); - return 0; -} |