X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;ds=inline;f=src%2Ffg_misc.c;fp=src%2Ffg_misc.c;h=5d192bf9f0a459ce28dffbd12290abce165ab47f;hb=1b5ee849ba61b667aeba474a7e03406196478bee;hp=0000000000000000000000000000000000000000;hpb=1ede9f68f98e29ddd07bd466310967e716bfac92;p=freeglut diff --git a/src/fg_misc.c b/src/fg_misc.c new file mode 100644 index 0000000..5d192bf --- /dev/null +++ b/src/fg_misc.c @@ -0,0 +1,203 @@ +/* + * 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, + * 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 +#include "fg_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"; +#ifndef GL_ES_VERSION_2_0 + case GL_STACK_OVERFLOW: return "stack overflow"; + case GL_STACK_UNDERFLOW: return "stack underflow"; +#endif + 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; + } +} + +/* + * + */ +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 ***/