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/*
* Copyright (c) 2009 VMware, Inc.
* 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.
*/
/**
* Simple test for testing ATI_envmap_bumpmap support.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <GL/glut.h>
#include "readtex.h"
static PFNGLGETTEXBUMPPARAMETERFVATIPROC glGetTexBumpParameterfvATI_func = NULL;
static PFNGLGETTEXBUMPPARAMETERIVATIPROC glGetTexBumpParameterivATI_func = NULL;
static PFNGLTEXBUMPPARAMETERFVATIPROC glTexBumpParameterfvATI_func = NULL;
static const char *TexFile = "../images/arch.rgb";
static const GLfloat Near = 5.0, Far = 25.0;
static void Display( void )
{
/* together with the construction of dudv map, do fixed translation
in y direction (up), some cosine deformation in x and more
deformation in y dir */
GLfloat bumpMatrix[4] = {0.1, 0.0, 0.2, 0.1};
glClearColor(0.2, 0.2, 0.8, 0);
glClear( GL_COLOR_BUFFER_BIT );
glPushMatrix();
/* this is the base map */
glActiveTexture( GL_TEXTURE0 );
glEnable( GL_TEXTURE_2D );
glBindTexture( GL_TEXTURE_2D, 1 );
glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE );
glTexEnvf( GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_REPLACE );
glTexEnvf( GL_TEXTURE_ENV, GL_SOURCE0_RGB, GL_TEXTURE );
/* bump map */
glActiveTexture( GL_TEXTURE1 );
glEnable( GL_TEXTURE_2D );
glBindTexture( GL_TEXTURE_2D, 2 );
glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE );
glTexEnvf( GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_BUMP_ENVMAP_ATI );
glTexEnvf( GL_TEXTURE_ENV, GL_BUMP_TARGET_ATI, GL_TEXTURE0);
glTexBumpParameterfvATI_func(GL_BUMP_ROT_MATRIX_ATI, bumpMatrix);
glCallList(1);
glPopMatrix();
glutSwapBuffers();
}
static void Reshape( int width, int height )
{
GLfloat ar = (float) width / (float) 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, -6.0 );
}
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 );
GLfloat temp[16][16][2];
GLubyte *image = NULL;
GLint imgWidth, imgHeight;
GLenum imgFormat;
GLint i,j;
GLint param, paramArray[16];
GLfloat paramMat[4];
printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
printf("GL_VERSION = %s\n", ver_string);
if ( !glutExtensionSupported("GL_ATI_envmap_bumpmap")) {
printf("\nSorry, this program requires GL_ATI_envmap_bumpmap\n");
exit(1);
}
glGetTexBumpParameterfvATI_func = glutGetProcAddress("glGetTexBumpParameterfvATI");
glGetTexBumpParameterivATI_func = glutGetProcAddress("glGetTexBumpParameterivATI");
glTexBumpParameterfvATI_func = glutGetProcAddress("glTexBumpParameterfvATI");
glGetTexBumpParameterivATI_func(GL_BUMP_ROT_MATRIX_SIZE_ATI, ¶m);
printf("BUMP_ROT_MATRIX_SIZE_ATI = %d\n", param);
glGetTexBumpParameterivATI_func(GL_BUMP_NUM_TEX_UNITS_ATI, ¶m);
printf("BUMP_NUM_TEX_UNITS_ATI = %d\n", param);
glGetTexBumpParameterfvATI_func(GL_BUMP_ROT_MATRIX_ATI, paramMat);
printf("initial rot matrix %f %f %f %f\n", paramMat[0], paramMat[1], paramMat[2], paramMat[3]);
glGetTexBumpParameterivATI_func(GL_BUMP_TEX_UNITS_ATI, paramArray);
printf("units supporting bump mapping: ");
for (i = 0; i < param; i++)
printf("%d ", paramArray[i] - GL_TEXTURE0);
printf("\n");
image = LoadRGBImage(TexFile, &imgWidth, &imgHeight, &imgFormat);
if (!image) {
printf("Couldn't read %s\n", TexFile);
exit(0);
}
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 );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
glTexImage2D( GL_TEXTURE_2D, 0, imgFormat, imgWidth, imgHeight, 0,
imgFormat, GL_UNSIGNED_BYTE, image );
for (j = 0; j < 16; j++) {
for (i = 0; i < 16; i++) {
temp[j][i][0] = cos((float)(i) * 3.1415 / 16.0);
temp[j][i][1] = -0.5;
}
}
glBindTexture( GL_TEXTURE_2D, 2 );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
glTexImage2D( GL_TEXTURE_2D, 0, GL_DU8DV8_ATI, 16, 16, 0,
GL_DUDV_ATI, GL_FLOAT, temp );
glNewList( 1, GL_COMPILE );
glBegin(GL_QUADS);
glColor3f( 0.9, 0.0, 0.0 );
glMultiTexCoord2f( GL_TEXTURE0, 0.0, 0.0 );
glMultiTexCoord2f( GL_TEXTURE1, 0.0, 0.0 );
glVertex2f(-1, -1);
glMultiTexCoord2f( GL_TEXTURE0, 1.0, 0.0 );
glMultiTexCoord2f( GL_TEXTURE1, 1.0, 0.0 );
glVertex2f( 1, -1);
glMultiTexCoord2f( GL_TEXTURE0, 1.0, 1.0 );
glMultiTexCoord2f( GL_TEXTURE1, 1.0, 1.0 );
glVertex2f( 1, 1);
glMultiTexCoord2f( GL_TEXTURE0, 0.0, 1.0 );
glMultiTexCoord2f( GL_TEXTURE1, 0.0, 1.0 );
glVertex2f(-1, 1);
glEnd();
glEndList();
}
int main( int argc, char *argv[] )
{
glutInit( &argc, argv );
glutInitWindowPosition( 0, 0 );
glutInitWindowSize( 400, 400 );
glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE );
glutCreateWindow( "GL_ATI_envmap_bumpmap test" );
glutReshapeFunc( Reshape );
glutKeyboardFunc( Key );
glutDisplayFunc( Display );
Init();
glutMainLoop();
return 0;
}
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