Skip to content
Find file
Fetching contributors…
Cannot retrieve contributors at this time
215 lines (189 sloc) 6.36 KB
/*
* freeglut_misc.c
*
* Functions that didn't fit anywhere else...
*
* Copyright (c) 1999-2000 Pawel W. Olszta. All Rights Reserved.
* Written by Pawel W. Olszta, <olszta@sourceforge.net>
* Creation date: Thu Dec 9 1999
*
* 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
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* 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 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 NONINFRINGEMENT. IN NO EVENT SHALL
* PAWEL W. OLSZTA 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.
*/
#include "freeglut.h"
#include "freeglut_internal.h"
/*
* TODO BEFORE THE STABLE RELEASE:
*
* glutSetColor() --
* glutGetColor() --
* glutCopyColormap() --
* glutSetKeyRepeat() -- this is evil and should be removed from API
*/
/* -- INTERFACE FUNCTIONS -------------------------------------------------- */
/*
* This functions checks if an OpenGL extension is supported or not
*
* XXX Wouldn't this be simpler and clearer if we used strtok()?
*/
int FGAPIENTRY glutExtensionSupported( const char* extension )
{
const char *extensions, *start;
const size_t len = strlen( extension );
/* Make sure there is a current window, and thus a current context available */
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutExtensionSupported" );
freeglut_return_val_if_fail( fgStructure.CurrentWindow != NULL, 0 );
if (strchr(extension, ' '))
return 0;
start = extensions = (const char *) glGetString(GL_EXTENSIONS);
/* XXX consider printing a warning to stderr that there's no current
* rendering context.
*/
freeglut_return_val_if_fail( extensions != NULL, 0 );
while (1) {
const char *p = strstr(extensions, extension);
if (!p)
return 0; /* not found */
/* check that the match isn't a super string */
if ((p == start || p[-1] == ' ') && (p[len] == ' ' || p[len] == 0))
return 1;
/* skip the false match and continue */
extensions = p + len;
}
return 0 ;
}
#ifndef GL_INVALID_FRAMEBUFFER_OPERATION
#ifdef GL_INVALID_FRAMEBUFFER_OPERATION_EXT
#define GL_INVALID_FRAMEBUFFER_OPERATION GL_INVALID_FRAMEBUFFER_OPERATION_EXT
#else
#define GL_INVALID_FRAMEBUFFER_OPERATION 0x0506
#endif
#endif
#ifndef GL_TABLE_TOO_LARGE
#ifdef GL_TABLE_TOO_LARGE_EXT
#define GL_TABLE_TOO_LARGE GL_TABLE_TOO_LARGE_EXT
#else
#define GL_TABLE_TOO_LARGE 0x8031
#endif
#endif
#ifndef GL_TEXTURE_TOO_LARGE
#ifdef GL_TEXTURE_TOO_LARGE_EXT
#define GL_TEXTURE_TOO_LARGE GL_TEXTURE_TOO_LARGE_EXT
#else
#define GL_TEXTURE_TOO_LARGE 0x8065
#endif
#endif
/*
* A cut-down local version of gluErrorString to avoid depending on GLU.
*/
static const char* fghErrorString( GLenum error )
{
switch ( error ) {
case GL_INVALID_ENUM: return "invalid enumerant";
case GL_INVALID_VALUE: return "invalid value";
case GL_INVALID_OPERATION: return "invalid operation";
case GL_STACK_OVERFLOW: return "stack overflow";
case GL_STACK_UNDERFLOW: return "stack underflow";
case GL_OUT_OF_MEMORY: return "out of memory";
case GL_TABLE_TOO_LARGE: return "table too large";
case GL_INVALID_FRAMEBUFFER_OPERATION: return "invalid framebuffer operation";
case GL_TEXTURE_TOO_LARGE: return "texture too large";
default: return "unknown GL error";
}
}
/*
* This function reports all the OpenGL errors that happened till now
*/
void FGAPIENTRY glutReportErrors( void )
{
GLenum error;
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutReportErrors" );
while( ( error = glGetError() ) != GL_NO_ERROR )
fgWarning( "GL error: %s", fghErrorString( error ) );
}
/*
* Control the auto-repeat of keystrokes to the current window
*/
void FGAPIENTRY glutIgnoreKeyRepeat( int ignore )
{
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutIgnoreKeyRepeat" );
FREEGLUT_EXIT_IF_NO_WINDOW ( "glutIgnoreKeyRepeat" );
fgStructure.CurrentWindow->State.IgnoreKeyRepeat = ignore ? GL_TRUE : GL_FALSE;
}
/*
* Set global auto-repeat of keystrokes
*
* RepeatMode should be either:
* GLUT_KEY_REPEAT_OFF
* GLUT_KEY_REPEAT_ON
* GLUT_KEY_REPEAT_DEFAULT
*/
void FGAPIENTRY glutSetKeyRepeat( int repeatMode )
{
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSetKeyRepeat" );
switch( repeatMode )
{
case GLUT_KEY_REPEAT_OFF:
case GLUT_KEY_REPEAT_ON:
fgState.KeyRepeat = repeatMode;
break;
case GLUT_KEY_REPEAT_DEFAULT:
fgState.KeyRepeat = GLUT_KEY_REPEAT_ON;
break;
default:
fgError ("Invalid glutSetKeyRepeat mode: %d", repeatMode);
break;
}
}
/*
* Forces the joystick callback to be executed
*/
void FGAPIENTRY glutForceJoystickFunc( void )
{
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutForceJoystickFunc" );
#if !defined(_WIN32_WCE)
freeglut_return_if_fail( fgStructure.CurrentWindow != NULL );
freeglut_return_if_fail( FETCH_WCB( *( fgStructure.CurrentWindow ), Joystick ) );
fgJoystickPollWindow( fgStructure.CurrentWindow );
#endif /* !defined(_WIN32_WCE) */
}
/*
*
*/
void FGAPIENTRY glutSetColor( int nColor, GLfloat red, GLfloat green, GLfloat blue )
{
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSetColor" );
/* We really need to do something here. */
}
/*
*
*/
GLfloat FGAPIENTRY glutGetColor( int color, int component )
{
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutGetColor" );
/* We really need to do something here. */
return( 0.0f );
}
/*
*
*/
void FGAPIENTRY glutCopyColormap( int window )
{
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutCopyColormap" );
/* We really need to do something here. */
}
/*** END OF FILE ***/
Jump to Line
Something went wrong with that request. Please try again.