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/*
OSMesa LDG linker, misc functions
Copyright (C) 2004 Patrice Mandin
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*--- Includes ---*/
#include <stdlib.h>
#include <string.h>
#include <mint/osbind.h>
#include "lib-osmesa.h"
#include "lib-oldmesa.h"
#include "nfosmesa_nfapi.h"
/*--- Defines ---*/
#define GL_VENDOR 0x1F00
#define GL_RENDERER 0x1F01
#define GL_VERSION 0x1F02
#define GL_EXTENSIONS 0x1F03
#define GL_SHADING_LANGUAGE_VERSION 0x8B8C
/*--- Variables ---*/
static const GLubyte empty_str[1];
/*--- Functions ---*/
const GLubyte* APIENTRY internal_glGetString( gl_private *private, GLenum name )
{
int i;
size_t len;
unsigned int c = CTX_TO_IDX(private->cur_context);
if (c == 0)
return empty_str;
switch(name) {
case GL_VERSION:
i=1;
break;
case GL_RENDERER:
i=2;
break;
case GL_VENDOR:
i=3;
break;
case GL_EXTENSIONS:
i=4;
break;
default:
return empty_str;
}
if (private->contexts[c].gl_strings[i]==NULL) {
unsigned long params[3];
params[0] = (unsigned long) private->cur_context;
params[1] = (unsigned long) name;
len = (*HostCall_p)(NFOSMESA_LENGLGETSTRING, private->cur_context, params);
private->contexts[c].gl_strings[i] = (GLubyte *)private->pub.m_alloc(len+1);
if (private->contexts[c].gl_strings[i]) {
params[0] = (unsigned long) private->cur_context;
params[1] = (unsigned long) name;
params[2] = (unsigned long) private->contexts[c].gl_strings[i];
(*HostCall_p)(NFOSMESA_PUTGLGETSTRING, private->cur_context, params);
} else {
return empty_str;
}
}
return private->contexts[c].gl_strings[i];
}
const GLubyte* APIENTRY internal_glGetStringi(gl_private *private, GLenum name, GLuint index )
{
int i;
size_t len;
unsigned int c = CTX_TO_IDX(private->cur_context);
if (c == 0)
return empty_str;
switch(name) {
case GL_EXTENSIONS:
i=5;
break;
case GL_SHADING_LANGUAGE_VERSION:
i=6;
break;
default:
return empty_str;
}
if (private->contexts[c].gl_strings[i]!=NULL) {
private->pub.m_free(private->contexts[c].gl_strings[i]);
private->contexts[c].gl_strings[i] = NULL;
}
{
unsigned long params[4];
params[0] = (unsigned long) private->cur_context;
params[1] = (unsigned long) name;
params[2] = (unsigned long) index;
len = (*HostCall_p)(NFOSMESA_LENGLGETSTRINGI, private->cur_context, params);
if (len < 0)
return NULL;
private->contexts[c].gl_strings[i] = (GLubyte *)private->pub.m_alloc(len+1);
if (private->contexts[c].gl_strings[i]) {
params[0] = (unsigned long) private->cur_context;
params[1] = (unsigned long) name;
params[2] = (unsigned long) index;
params[3] = (unsigned long) private->contexts[c].gl_strings[i];
(*HostCall_p)(NFOSMESA_PUTGLGETSTRINGI, private->cur_context, params);
} else {
return empty_str;
}
}
return private->contexts[c].gl_strings[i];
}
void freeglGetString(gl_private *private, OSMesaContext ctx)
{
int i;
unsigned int c = CTX_TO_IDX(ctx);
for (i=1;i<7;i++) {
if (private->contexts[c].gl_strings[i]) {
private->pub.m_free(private->contexts[c].gl_strings[i]);
private->contexts[c].gl_strings[i]=NULL;
}
}
}
void APIENTRY internal_tinyglswapbuffer(gl_private *private, void *buf)
{
(*HostCall_p)(NFOSMESA_TINYGLSWAPBUFFER, private->cur_context, &buf);
}
void APIENTRY internal_tinyglexception_error(gl_private *private, void CALLBACK (*exception)(GLenum param))
{
private->gl_exception = exception;
}
int gl_exception_error(gl_private *private, GLenum exception)
{
if (private->gl_exception)
{
(*private->gl_exception)(exception);
return 1;
}
return 0;
}
void gl_fatal_error(gl_private *private, GLenum error, long except, const char *format)
{
if (!gl_exception_error(private, except))
{
static char const err[] = "TinyGL: fatal error: ";
(void) Fwrite(2, sizeof(err) - 1, err);
(void) Fwrite(2, strlen(format), format);
(void) Fwrite(2, 2, "\r\n");
}
}
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