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* (C) Copyright IBM Corporation 2006
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* on the rights to use, copy, modify, merge, publish, distribute, sub
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* license, and/or sell copies of the Software, and to permit persons to whom
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* the Software is furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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* \file prog_parameter.c
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* Test various aspects of setting (and getting) low-level program parameters.
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* This is primarilly intended as a test for GL_EXT_gpu_program_parameters,
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* but it turns out that it hits some other functionality along the way.
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* \author Ian Romanick <idr@us.ibm.com>
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#ifndef GL_EXT_gpu_program_parameters
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typedef void (APIENTRYP PFNGLPROGRAMLOCALPARAMETERS4FVEXTPROC)(GLenum,
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GLuint, GLsizei, const GLfloat *);
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typedef void (APIENTRYP PFNGLPROGRAMENVPARAMETERS4FVEXTPROC)(GLenum,
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GLuint, GLsizei, const GLfloat *);
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static PFNGLPROGRAMLOCALPARAMETER4FVARBPROC program_local_parameter4fv = NULL;
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static PFNGLGETPROGRAMLOCALPARAMETERFVARBPROC get_program_local_parameterfv = NULL;
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static PFNGLPROGRAMENVPARAMETER4FVARBPROC program_env_parameter4fv = NULL;
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static PFNGLGETPROGRAMENVPARAMETERFVARBPROC get_program_env_parameterfv = NULL;
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static PFNGLBINDPROGRAMARBPROC bind_program = NULL;
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static PFNGLGETPROGRAMIVARBPROC get_program = NULL;
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static PFNGLPROGRAMLOCALPARAMETERS4FVEXTPROC program_local_parameters4fv = NULL;
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static PFNGLPROGRAMENVPARAMETERS4FVEXTPROC program_env_parameters4fv = NULL;
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static int Width = 400;
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static int Height = 200;
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static const GLfloat Near = 5.0, Far = 25.0;
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static void Display( void )
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static void Idle( void )
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static void Visible( int vis )
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if ( vis == GLUT_VISIBLE ) {
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static void Reshape( int width, int height )
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GLfloat ar = (float) width / (float) height;
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glViewport( 0, 0, width, height );
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glMatrixMode( GL_PROJECTION );
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glFrustum( -ar, ar, -1.0, 1.0, Near, Far );
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static void Key( unsigned char key, int x, int y )
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static int set_parameter_batch( GLsizei count, GLfloat * param,
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PFNGLPROGRAMLOCALPARAMETER4FVARBPROC set_parameter,
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PFNGLPROGRAMLOCALPARAMETERS4FVEXTPROC set_parameters,
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PFNGLGETPROGRAMLOCALPARAMETERFVARBPROC get_parameter
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for ( i = 0 ; i < (4 * count) ; i++ ) {
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param[i] = (GLfloat) random() / (GLfloat) random();
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/* Try using the "classic" interface.
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printf("Testing glProgram%sParameter4fvARB (count = %u)...\n", name, count);
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for ( i = 0 ; i < count ; i++ ) {
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(*set_parameter)(GL_VERTEX_PROGRAM_ARB, i, & param[i * 4]);
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for ( i = 0 ; i < count ; i++ ) {
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(*get_parameter)(GL_VERTEX_PROGRAM_ARB, i, temp);
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if ( (temp[0] != param[(i * 4) + 0])
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|| (temp[1] != param[(i * 4) + 1])
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|| (temp[2] != param[(i * 4) + 2])
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|| (temp[3] != param[(i * 4) + 3]) ) {
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printf("Mismatch in glProgram%sParameter4fvARB index %u!\n", name, i);
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printf("Got { %f, %f, %f, %f }, expected { %f, %f, %f, %f }!\n",
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param[(i * 4) + 0], param[(i * 4) + 1],
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param[(i * 4) + 2], param[(i * 4) + 3]);
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if ( set_parameters == NULL ) {
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for ( i = 0 ; i < (4 * count) ; i++ ) {
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param[i] = (GLfloat) random() / (GLfloat) random();
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printf("Testing glProgram%sParameters4fvEXT (count = %u)...\n", name, count);
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(*set_parameters)(GL_VERTEX_PROGRAM_ARB, 0, count, param);
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for ( i = 0 ; i < count ; i++ ) {
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(*get_parameter)(GL_VERTEX_PROGRAM_ARB, i, temp);
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if ( (temp[0] != param[(i * 4) + 0])
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|| (temp[1] != param[(i * 4) + 1])
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|| (temp[2] != param[(i * 4) + 2])
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|| (temp[3] != param[(i * 4) + 3]) ) {
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printf("Mismatch in glProgram%sParameters4fvEXT index %u!\n", name, i);
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printf("Got { %f, %f, %f, %f }, expected { %f, %f, %f, %f }!\n",
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param[(i * 4) + 0], param[(i * 4) + 1],
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param[(i * 4) + 2], param[(i * 4) + 3]);
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static void Init( void )
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const char * const ver_string = (const char * const)
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glGetString( GL_VERSION );
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GLint max_program_env_parameters;
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GLint max_program_local_parameters;
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printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
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printf("GL_VERSION = %s\n\n", ver_string);
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if ( !glutExtensionSupported("GL_ARB_vertex_program") ) {
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printf("Sorry, this program requires GL_ARB_vertex_program\n");
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program_local_parameter4fv = glutGetProcAddress( "glProgramLocalParameter4fvARB" );
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program_env_parameter4fv = glutGetProcAddress( "glProgramEnvParameter4fvARB" );
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get_program_local_parameterfv = glutGetProcAddress( "glGetProgramLocalParameterfvARB" );
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get_program_env_parameterfv = glutGetProcAddress( "glGetProgramEnvParameterfvARB" );
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bind_program = glutGetProcAddress( "glBindProgramARB" );
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get_program = glutGetProcAddress( "glGetProgramivARB" );
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if ( glutExtensionSupported("GL_EXT_gpu_program_parameters") ) {
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printf("GL_EXT_gpu_program_parameters available, testing that path.\n");
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program_local_parameters4fv = glutGetProcAddress( "glProgramLocalParameters4fvEXT" );
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program_env_parameters4fv = glutGetProcAddress( "glProgramEnvParameters4fvEXT" );
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printf("GL_EXT_gpu_program_parameters not available.\n");
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program_local_parameters4fv = NULL;
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program_env_parameters4fv = NULL;
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/* Since the test sets program local parameters, a program must be bound.
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* Program source, however, is not needed.
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(*bind_program)(GL_VERTEX_PROGRAM_ARB, 1);
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(*get_program)(GL_VERTEX_PROGRAM_ARB, GL_MAX_PROGRAM_ENV_PARAMETERS_ARB,
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& max_program_env_parameters);
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params = malloc(max_program_env_parameters * 4 * sizeof(GLfloat));
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pass &= set_parameter_batch(max_program_env_parameters, params, "Env",
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program_env_parameter4fv,
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program_env_parameters4fv,
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get_program_env_parameterfv);
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(*get_program)(GL_VERTEX_PROGRAM_ARB, GL_MAX_PROGRAM_LOCAL_PARAMETERS_ARB,
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& max_program_local_parameters);
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if (max_program_local_parameters > max_program_env_parameters) {
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params = realloc(params,
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max_program_local_parameters * 4 * sizeof(GLfloat));
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pass &= set_parameter_batch(max_program_local_parameters, params, "Local",
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program_local_parameter4fv,
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program_local_parameters4fv,
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get_program_local_parameterfv);
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int main( int argc, char *argv[] )
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glutInit( &argc, argv );
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glutInitWindowPosition( 0, 0 );
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glutInitWindowSize( Width, Height );
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glutInitDisplayMode( GLUT_RGB );
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glutCreateWindow( "Program Parameters Test" );
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glutReshapeFunc( Reshape );
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glutKeyboardFunc( Key );
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glutDisplayFunc( Display );
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glutVisibilityFunc( Visible );