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Diffstat (limited to 'progs/tests/blendminmax.c')
-rw-r--r-- | progs/tests/blendminmax.c | 209 |
1 files changed, 0 insertions, 209 deletions
diff --git a/progs/tests/blendminmax.c b/progs/tests/blendminmax.c deleted file mode 100644 index 2aab1a39d29..00000000000 --- a/progs/tests/blendminmax.c +++ /dev/null @@ -1,209 +0,0 @@ -/* - * (C) Copyright IBM Corporation 2004 - * 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 - * on the rights to use, copy, modify, merge, publish, distribute, sub - * license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL - * VA LINUX SYSTEM, IBM AND/OR THEIR SUPPLIERS 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. - */ - -/** - * \file blendminmax.c - * - * Simple test of GL_EXT_blend_minmax functionality. Four squares are drawn - * with different blending modes, but all should be rendered with the same - * final color. - * - * \author Ian Romanick <idr@us.ibm.com> - */ - -#include <stdio.h> -#include <stdlib.h> -#include <GL/glut.h> - -static int Width = 400; -static int Height = 200; -static const GLfloat Near = 5.0, Far = 25.0; - - -static void Display( void ) -{ - glClearColor(0.2, 0.2, 0.8, 0); - glClear( GL_COLOR_BUFFER_BIT ); - - glPushMatrix(); - - /* This is the "reference" square. - */ - - glTranslatef(-4.5, 0, 0); - glBlendEquation( GL_FUNC_ADD ); - glBlendFunc( GL_ONE, GL_ZERO ); - glBegin(GL_QUADS); - glColor3f( 0.5, 0.5, 0.5 ); - glVertex2f(-1, -1); - glVertex2f( 1, -1); - glVertex2f( 1, 1); - glVertex2f(-1, 1); - glEnd(); - - - /* GL_MIN and GL_MAX are supposed to ignore the blend function setting. - * To test that, we set the blend function to GL_ZERO for both color and - * alpha each time GL_MIN or GL_MAX is used. - * - * Apple ships an extension called GL_ATI_blend_weighted_minmax (supported - * on Mac OS X 10.2 and later). I believe the difference with that - * extension is that it uses the blend function. However, I have no idea - * what the enums are for it. The extension is listed at Apple's developer - * site, but there is no documentation. - * - * http://developer.apple.com/opengl/extensions.html - */ - - glTranslatef(3.0, 0, 0); - glBlendEquation( GL_FUNC_ADD ); - glBlendFunc( GL_ONE, GL_ZERO ); - glBegin(GL_QUADS); - glColor3f( 0.5, 0.5, 0.5 ); - glVertex2f(-1, -1); - glVertex2f( 1, -1); - glVertex2f( 1, 1); - glVertex2f(-1, 1); - glEnd(); - - glBlendEquation( GL_MAX ); - glBlendFunc( GL_ZERO, GL_ZERO ); - glBegin(GL_QUADS); - glColor3f( 0.2, 0.2, 0.2 ); - glVertex2f(-1, -1); - glVertex2f( 1, -1); - glVertex2f( 1, 1); - glVertex2f(-1, 1); - glEnd(); - - - glTranslatef(3.0, 0, 0); - glBlendEquation( GL_FUNC_ADD ); - glBlendFunc( GL_ONE, GL_ZERO ); - glBegin(GL_QUADS); - glColor3f( 0.5, 0.5, 0.5 ); - glVertex2f(-1, -1); - glVertex2f( 1, -1); - glVertex2f( 1, 1); - glVertex2f(-1, 1); - glEnd(); - - glBlendEquation( GL_MIN ); - glBlendFunc( GL_ZERO, GL_ZERO ); - glBegin(GL_QUADS); - glColor3f( 0.8, 0.8, 0.8 ); - glVertex2f(-1, -1); - glVertex2f( 1, -1); - glVertex2f( 1, 1); - glVertex2f(-1, 1); - glEnd(); - - - glTranslatef(3.0, 0, 0); - glBlendEquation( GL_FUNC_ADD ); - glBlendFunc( GL_ONE, GL_ZERO ); - glBegin(GL_QUADS); - glColor3f( 0.8, 0.8, 0.8 ); - glVertex2f(-1, -1); - glVertex2f( 1, -1); - glVertex2f( 1, 1); - glVertex2f(-1, 1); - glEnd(); - - glBlendEquation( GL_MIN ); - glBlendFunc( GL_ZERO, GL_ZERO ); - glBegin(GL_QUADS); - glColor3f( 0.5, 0.5, 0.5 ); - glVertex2f(-1, -1); - glVertex2f( 1, -1); - glVertex2f( 1, 1); - glVertex2f(-1, 1); - glEnd(); - - glPopMatrix(); - - glutSwapBuffers(); -} - - -static void Reshape( int width, int height ) -{ - GLfloat ar = (float) width / (float) height; - Width = width; - Height = height; - glViewport( 0, 0, width, height ); - glMatrixMode( GL_PROJECTION ); - glLoadIdentity(); - glFrustum( -ar, ar, -1.0, 1.0, Near, Far ); - glMatrixMode( GL_MODELVIEW ); - glLoadIdentity(); - glTranslatef( 0.0, 0.0, -15.0 ); -} - - -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 ) -{ - const char * const ver_string = (const char * const) - glGetString( GL_VERSION ); - - printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER)); - printf("GL_VERSION = %s\n", ver_string); - - if ( !glutExtensionSupported("GL_ARB_imaging") && !glutExtensionSupported("GL_EXT_blend_minmax")) { - printf("Sorry, this program requires either GL_ARB_imaging or GL_EXT_blend_minmax.\n"); - exit(1); - } - - printf("\nAll 4 squares should be the same color.\n"); - glEnable( GL_BLEND ); -} - - -int main( int argc, char *argv[] ) -{ - glutInit( &argc, argv ); - glutInitWindowPosition( 0, 0 ); - glutInitWindowSize( Width, Height ); - glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE ); - glutCreateWindow( "GL_EXT_blend_minmax test" ); - glutReshapeFunc( Reshape ); - glutKeyboardFunc( Key ); - glutDisplayFunc( Display ); - Init(); - glutMainLoop(); - return 0; -} |