diff options
| -rw-r--r-- | progs/tests/Makefile | 1 | ||||
| -rw-r--r-- | progs/tests/blendsquare.c | 153 |
2 files changed, 154 insertions, 0 deletions
diff --git a/progs/tests/Makefile b/progs/tests/Makefile index 28f7a50ee64..16640643844 100644 --- a/progs/tests/Makefile +++ b/progs/tests/Makefile @@ -19,6 +19,7 @@ SOURCES = antialias.c \ arbvptest3.c \ arbvptorus.c \ arbvpwarpmesh.c \ + blendsquare.c \ bufferobj.c \ cva.c \ dinoshade.c \ diff --git a/progs/tests/blendsquare.c b/progs/tests/blendsquare.c new file mode 100644 index 00000000000..37ad3845b99 --- /dev/null +++ b/progs/tests/blendsquare.c @@ -0,0 +1,153 @@ +/* + * (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 blendsquare.c + * + * Simple test of GL_NV_blend_square functionality. Three squares are drawn + * with different blending modes, but all should be rendered with the same + * final color. + * + * \author Ian Romanick <[email protected]> + */ + +#include <stdio.h> +#include <stdlib.h> +#include <GL/glut.h> + +static int Width = 300; +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(); + glTranslatef(-3.0, 0, 0); + glBlendFunc( GL_ONE, GL_ZERO ); + glBegin(GL_QUADS); + glColor3f( 0.5 * 0.5, 0.5 * 0.5, 0.5 * 0.5 ); + glVertex2f(-1, -1); + glVertex2f( 1, -1); + glVertex2f( 1, 1); + glVertex2f(-1, 1); + glEnd(); + + glTranslatef(3.0, 0, 0); + glBlendFunc( GL_SRC_COLOR, 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(); + + glTranslatef(3.0, 0, 0); + glBlendFunc( GL_ONE, GL_ZERO ); + glBegin(GL_QUADS); + glVertex2f(-1, -1); + glVertex2f( 1, -1); + glVertex2f( 1, 1); + glVertex2f(-1, 1); + glEnd(); + + glBlendFunc( GL_ZERO, GL_DST_COLOR ); + glBegin(GL_QUADS); + 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 ); + const double version = strtod( ver_string, NULL ); + + printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER)); + printf("GL_VERSION = %s\n", ver_string); + + if ( (version < 1.4) && !glutExtensionSupported("GL_NV_blend_square")) { + printf("Sorry, this program requires either OpenGL 1.4 or GL_NV_blend_square\n"); + exit(1); + } + + printf("All 3 squares should be the same color.\n"); + glEnable( GL_BLEND ); + glBlendEquation( GL_FUNC_ADD ); +} + + +int main( int argc, char *argv[] ) +{ + glutInit( &argc, argv ); + glutInitWindowPosition( 0, 0 ); + glutInitWindowSize( Width, Height ); + glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE ); + glutCreateWindow( "GL_NV_blend_square test" ); + glutReshapeFunc( Reshape ); + glutKeyboardFunc( Key ); + glutDisplayFunc( Display ); + Init(); + glutMainLoop(); + return 0; +} |