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Diffstat (limited to 'progs/tests/fog.c')
-rw-r--r-- | progs/tests/fog.c | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/progs/tests/fog.c b/progs/tests/fog.c deleted file mode 100644 index ecd9f533f99..00000000000 --- a/progs/tests/fog.c +++ /dev/null @@ -1,199 +0,0 @@ -/* - * Copyright 2005 Eric Anholt - * All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - * Authors: - * Eric Anholt <[email protected]> - * Brian Paul (fogcoord.c used as a skeleton) - */ - -/* - * Test to exercise fog modes and for comparison with GL_EXT_fog_coord. - */ - -#define GL_GLEXT_PROTOTYPES -#include <stdio.h> -#include <stdlib.h> -#include <math.h> -#include <GL/glut.h> - -static int Width = 600; -static int Height = 600; -static GLfloat Near = 0.0, Far = 1.0; -GLboolean has_fogcoord; - -static void drawString( const char *string ) -{ - glRasterPos2f(0, .5); - while ( *string ) { - glutBitmapCharacter( GLUT_BITMAP_TIMES_ROMAN_10, *string ); - string++; - } -} - -static void Display( void ) -{ - GLint i, depthi; - GLfloat fogcolor[4] = {1, 1, 1, 1}; - - glEnable(GL_FOG); - glFogfv(GL_FOG_COLOR, fogcolor); - - glClearColor(0.2, 0.2, 0.8, 0); - glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); - - glPushMatrix(); - for (i = 0; i < 6; i++) { - if (i >= 3 && !has_fogcoord) - break; - - glPushMatrix(); - for (depthi = 0; depthi < 5; depthi++) { - GLfloat depth = Near + (Far - Near) * depthi / 4; - - switch (i % 3) { - case 0: - glFogi(GL_FOG_MODE, GL_LINEAR); - glFogf(GL_FOG_START, Near); - glFogf(GL_FOG_END, Far); - break; - case 1: - glFogi(GL_FOG_MODE, GL_EXP); - glFogf(GL_FOG_DENSITY, 2); - break; - case 2: - glFogi(GL_FOG_MODE, GL_EXP2); - glFogf(GL_FOG_DENSITY, 2); - break; - } - - glColor4f(0, 0, 0, 0); - if (i < 3) { - if (has_fogcoord) - glFogi(GL_FOG_COORDINATE_SOURCE_EXT, GL_FRAGMENT_DEPTH_EXT); - - glBegin(GL_POLYGON); - glVertex3f(0, 0, depth); - glVertex3f(1, 0, depth); - glVertex3f(1, 1, depth); - glVertex3f(0, 1, depth); - glEnd(); - } else { - glFogi(GL_FOG_COORDINATE_SOURCE_EXT, GL_FOG_COORDINATE_EXT); - glFogCoordfEXT(depth); - - glBegin(GL_POLYGON); - glVertex3f(0, 0, (Near + Far) / 2); - glVertex3f(1, 0, (Near + Far) / 2); - glVertex3f(1, 1, (Near + Far) / 2); - glVertex3f(0, 1, (Near + Far) / 2); - glEnd(); - } - glTranslatef(1.5, 0, 0); - } - - glTranslatef(.1, 0, 0); - switch (i) { - case 0: - drawString("GL_LINEAR"); - break; - case 1: - drawString("GL_EXP"); - break; - case 2: - drawString("GL_EXP2"); - break; - case 3: - drawString("GL_FOGCOORD GL_LINEAR"); - break; - case 4: - drawString("GL_FOGCOORD GL_EXP"); - break; - case 5: - drawString("GL_FOGCOORD GL_EXP2"); - break; - } - - glPopMatrix(); - glTranslatef(0, 1.5, 0); - } - glPopMatrix(); - - glutSwapBuffers(); -} - - -static void Reshape( int width, int height ) -{ - Width = width; - Height = height; - glViewport( 0, 0, width, height ); - - glMatrixMode( GL_PROJECTION ); - glLoadIdentity(); - glOrtho( 0, 11, 9, 0, -Near, -Far ); - - glMatrixMode( GL_MODELVIEW ); - glLoadIdentity(); - glTranslatef(.25, .25, 0); -} - - -static void Key( unsigned char key, int x, int y ) -{ - (void) x; - (void) y; - switch (key) { - case 27: - exit(0); - break; - } - glutPostRedisplay(); -} - - -static void Init( void ) -{ - printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER)); - printf("GL_VERSION = %s\n", (char *) glGetString(GL_VERSION)); - /* setup lighting, etc */ - has_fogcoord = glutExtensionSupported("GL_EXT_fog_coord"); - if (!has_fogcoord) { - printf("Some output of this program requires GL_EXT_fog_coord\n"); - } -} - - -int main( int argc, char *argv[] ) -{ - glutInit( &argc, argv ); - glutInitWindowPosition( 0, 0 ); - glutInitWindowSize( Width, Height ); - glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH ); - glutCreateWindow(argv[0]); - glutReshapeFunc( Reshape ); - glutKeyboardFunc( Key ); - glutDisplayFunc( Display ); - Init(); - glutMainLoop(); - return 0; -} |