mirror of https://github.com/xemu-project/xemu.git
86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
/*
|
|
* Offscreen OpenGL abstraction layer - CGL (Apple) specific
|
|
*
|
|
* Copyright (c) 2013 Wayo
|
|
*
|
|
* 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
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS 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 <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <dlfcn.h>
|
|
|
|
#include "gloffscreen.h"
|
|
|
|
#include <OpenGL/CGLTypes.h>
|
|
#include <OpenGL/CGLCurrent.h>
|
|
|
|
struct _GloContext {
|
|
CGLContextObj cglContext;
|
|
};
|
|
|
|
/* Create an OpenGL context for a certain pixel format. formatflags are from
|
|
* the GLO_ constants */
|
|
GloContext *glo_context_create(void)
|
|
{
|
|
CGLError err;
|
|
|
|
GloContext *context = (GloContext *)malloc(sizeof(GloContext));
|
|
|
|
/* pixel format attributes */
|
|
CGLPixelFormatAttribute attributes[] = {
|
|
kCGLPFAAccelerated,
|
|
kCGLPFAOpenGLProfile,
|
|
(CGLPixelFormatAttribute)kCGLOGLPVersion_GL3_Core,
|
|
(CGLPixelFormatAttribute)0
|
|
};
|
|
|
|
CGLPixelFormatObj pix;
|
|
GLint num;
|
|
err = CGLChoosePixelFormat(attributes, &pix, &num);
|
|
if (err) return NULL;
|
|
|
|
err = CGLCreateContext(pix, NULL, &context->cglContext);
|
|
if (err) return NULL;
|
|
|
|
CGLDestroyPixelFormat(pix);
|
|
|
|
glo_set_current(context);
|
|
|
|
return context;
|
|
}
|
|
|
|
/* Set current context */
|
|
void glo_set_current(GloContext *context)
|
|
{
|
|
if (context == NULL) {
|
|
CGLSetCurrentContext(NULL);
|
|
} else {
|
|
CGLSetCurrentContext(context->cglContext);
|
|
}
|
|
}
|
|
|
|
/* Destroy a previously created OpenGL context */
|
|
void glo_context_destroy(GloContext *context)
|
|
{
|
|
if (!context) return;
|
|
glo_set_current(NULL);
|
|
CGLDestroyContext(context->cglContext);
|
|
}
|