+++ /dev/null
-/*
- * (C) Copyright IBM Corporation 2005
- * 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 crossbar.c
- *
- * Simple test of GL_ARB_texture_env_crossbar functionality. Several squares
- * are drawn with different texture combine 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 <string.h>
-#include <GL/glew.h>
-#include <GL/glut.h>
-
-static const GLint tests[][8] = {
- { 1, GL_REPLACE, GL_PRIMARY_COLOR, GL_PRIMARY_COLOR,
- 2, GL_REPLACE, GL_TEXTURE, GL_PRIMARY_COLOR },
- { 3, GL_REPLACE, GL_PRIMARY_COLOR, GL_PRIMARY_COLOR,
- 2, GL_SUBTRACT, GL_TEXTURE0, GL_TEXTURE1 },
- { 2, GL_REPLACE, GL_PRIMARY_COLOR, GL_PRIMARY_COLOR,
- 2, GL_REPLACE, GL_TEXTURE0, GL_TEXTURE0 },
- { 2, GL_REPLACE, GL_PRIMARY_COLOR, GL_PRIMARY_COLOR,
- 1, GL_SUBTRACT, GL_TEXTURE0, GL_TEXTURE1 },
- { 3, GL_ADD, GL_TEXTURE1, GL_TEXTURE1,
- 2, GL_MODULATE, GL_TEXTURE1, GL_PREVIOUS },
- { 3, GL_ADD, GL_TEXTURE1, GL_TEXTURE1,
- 4, GL_MODULATE, GL_TEXTURE0, GL_PREVIOUS },
-};
-
-#define NUM_TESTS (sizeof(tests) / sizeof(tests[0]))
-
-static int Width = 100 * (NUM_TESTS + 1);
-static int Height = 200;
-static const GLfloat Near = 5.0, Far = 25.0;
-
-
-static void Display( void )
-{
- unsigned i;
-
-
- glClearColor(0.2, 0.2, 0.8, 0);
- glClear( GL_COLOR_BUFFER_BIT );
-
- glPushMatrix();
-
- /* This is the "reference" square.
- */
-
- glActiveTexture( GL_TEXTURE0 );
- glDisable( GL_TEXTURE_2D );
- glActiveTexture( GL_TEXTURE1 );
- glDisable( GL_TEXTURE_2D );
-
- glTranslatef(-(NUM_TESTS * 1.5), 0, 0);
- glBegin(GL_QUADS);
- glColor3f( 0.5, 0.5, 0.5 );
- glVertex2f(-1, -1);
- glVertex2f( 1, -1);
- glVertex2f( 1, 1);
- glVertex2f(-1, 1);
- glEnd();
-
- for ( i = 0 ; i < NUM_TESTS ; i++ ) {
- glActiveTexture( GL_TEXTURE0 );
- glEnable( GL_TEXTURE_2D );
- glBindTexture( GL_TEXTURE_2D, tests[i][0] );
- glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE );
- glTexEnvi( GL_TEXTURE_ENV, GL_COMBINE_RGB, tests[i][1] );
- glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE0_RGB, tests[i][2] );
- glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE1_RGB, tests[i][3] );
-
- glActiveTexture( GL_TEXTURE1 );
- glEnable( GL_TEXTURE_2D );
- glBindTexture( GL_TEXTURE_2D, tests[i][4] );
- glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE );
- glTexEnvi( GL_TEXTURE_ENV, GL_COMBINE_RGB, tests[i][5] );
- glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE0_RGB, tests[i][6] );
- glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE1_RGB, tests[i][7] );
-
- glCallList(1);
- }
-
- 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 *)
- glGetString( GL_VERSION );
- float ver = strtod( ver_string, NULL );
- GLint tex_units;
- GLint temp[ 256 ];
-
-
- printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
- printf("GL_VERSION = %s\n", ver_string);
-
- if ( (!glutExtensionSupported("GL_ARB_multitexture")
- && (ver < 1.3))
- || (!glutExtensionSupported("GL_ARB_texture_env_combine")
- && !glutExtensionSupported("GL_EXT_texture_env_combine")
- && (ver < 1.3))
- || (!glutExtensionSupported("GL_ARB_texture_env_crossbar")
- && !glutExtensionSupported("GL_NV_texture_env_combine4")
- && (ver < 1.4)) ) {
- printf("\nSorry, this program requires GL_ARB_multitexture and either\n"
- "GL_ARB_texture_env_combine or GL_EXT_texture_env_combine (or OpenGL 1.3).\n"
- "Either GL_ARB_texture_env_crossbar or GL_NV_texture_env_combine4 (or\n"
- "OpenGL 1.4) are also required.\n");
- exit(1);
- }
-
- glGetIntegerv( GL_MAX_TEXTURE_UNITS, & tex_units );
- if ( tex_units < 2 ) {
- printf("\nSorry, this program requires at least 2 texture units.\n");
- exit(1);
- }
-
- printf("\nAll %lu squares should be the same color.\n", (unsigned long) NUM_TESTS + 1);
-
- (void) memset( temp, 0x00, sizeof( temp ) );
- glBindTexture( GL_TEXTURE_2D, 1 );
- glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
- glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
- glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA, 8, 8, 0,
- GL_RGBA, GL_UNSIGNED_BYTE, temp );
-
- (void) memset( temp, 0x7f, sizeof( temp ) );
- glBindTexture( GL_TEXTURE_2D, 2 );
- glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
- glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
- glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA, 8, 8, 0,
- GL_RGBA, GL_UNSIGNED_BYTE, temp );
-
- (void) memset( temp, 0xff, sizeof( temp ) );
- glBindTexture( GL_TEXTURE_2D, 3 );
- glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
- glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
- glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA, 8, 8, 0,
- GL_RGBA, GL_UNSIGNED_BYTE, temp );
-
- (void) memset( temp, 0x3f, sizeof( temp ) );
- glBindTexture( GL_TEXTURE_2D, 4 );
- glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
- glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
- glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA, 8, 8, 0,
- GL_RGBA, GL_UNSIGNED_BYTE, temp );
-
-
- glNewList( 1, GL_COMPILE );
- glTranslatef(3.0, 0, 0);
- glBegin(GL_QUADS);
- glColor3f( 0.9, 0.0, 0.0 );
- glMultiTexCoord2f( GL_TEXTURE0, 0.5, 0.5 );
- glMultiTexCoord2f( GL_TEXTURE1, 0.5, 0.5 );
- glVertex2f(-1, -1);
- glVertex2f( 1, -1);
- glVertex2f( 1, 1);
- glVertex2f(-1, 1);
- glEnd();
- glEndList();
-}
-
-
-int main( int argc, char *argv[] )
-{
- glutInit( &argc, argv );
- glutInitWindowPosition( 0, 0 );
- glutInitWindowSize( Width, Height );
- glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE );
- glutCreateWindow( "GL_ARB_texture_env_crossbar test" );
- glewInit();
- glutReshapeFunc( Reshape );
- glutKeyboardFunc( Key );
- glutDisplayFunc( Display );
- Init();
- glutMainLoop();
- return 0;
-}
projects / mesa.git / blobdiff