kolibrios-fun/contrib/sdk/sources/eglut/eglut.c

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/*
* Copyright (C) 2010 LunarG Inc.
*
* 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.
*
* Authors:
* Chia-I Wu <olv@lunarg.com>
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <sys/time.h>
#include "EGL/egl.h"
#include "EGL/eglext.h"
#include "render.h"
#include "eglutint.h"
#include <kos32sys.h>
static struct eglut_state _eglut_state = {
.api_mask = EGLUT_OPENGL_BIT,
.window_width = 300,
.window_height = 300,
.verbose = 0,
.num_windows = 0,
};
struct eglut_state *_eglut = &_eglut_state;
void
_eglutFatal(char *format, ...)
{
va_list args;
va_start(args, format);
fprintf(stderr, "EGLUT: ");
vfprintf(stderr, format, args);
va_end(args);
putc('\n', stderr);
exit(1);
}
/* return current time (in milliseconds) */
int
_eglutNow(void)
{
struct timeval tv;
struct timezone tz;
(void) gettimeofday(&tv, &tz);
return tv.tv_sec * 1000 + tv.tv_usec / 1000;
}
static void
_eglutDestroyWindow(struct eglut_window *win)
{
eglDestroySurface(_eglut->dpy, win->surface);
_eglutNativeFiniWindow(win);
eglDestroyContext(_eglut->dpy, win->context);
}
static EGLConfig
_eglutChooseConfig(void)
{
EGLConfig config;
EGLint config_attribs[32];
EGLint num_configs, i;
i = 0;
config_attribs[i++] = EGL_RED_SIZE;
config_attribs[i++] = 1;
config_attribs[i++] = EGL_GREEN_SIZE;
config_attribs[i++] = 1;
config_attribs[i++] = EGL_BLUE_SIZE;
config_attribs[i++] = 1;
config_attribs[i++] = EGL_DEPTH_SIZE;
config_attribs[i++] = 1;
config_attribs[i++] = EGL_SURFACE_TYPE;
config_attribs[i++] = EGL_WINDOW_BIT;
config_attribs[i++] = EGL_RENDERABLE_TYPE;
config_attribs[i++] = EGL_OPENGL_BIT;
config_attribs[i] = EGL_NONE;
// renderable_type = 0x0;
// if (_eglut->api_mask & EGLUT_OPENGL_BIT)
// renderable_type |= EGL_OPENGL_BIT;
// if (_eglut->api_mask & EGLUT_OPENGL_ES1_BIT)
// renderable_type |= EGL_OPENGL_ES_BIT;
// if (_eglut->api_mask & EGLUT_OPENGL_ES2_BIT)
// renderable_type |= EGL_OPENGL_ES2_BIT;
// if (_eglut->api_mask & EGLUT_OPENVG_BIT)
// renderable_type |= EGL_OPENVG_BIT;
if (!eglChooseConfig(_eglut->dpy,
config_attribs, &config, 1, &num_configs) || !num_configs)
_eglutFatal("failed to choose a config");
return config;
}
static struct eglut_window *
_eglutCreateWindow(const char *title, int x, int y, int w, int h)
{
struct eglut_window *win;
win = calloc(1, sizeof(*win));
if (!win)
_eglutFatal("failed to allocate window");
win->config = _eglutChooseConfig();
eglBindAPI(EGL_OPENGL_API);
win->context = eglCreateContext(_eglut->dpy, win->config, EGL_NO_CONTEXT, NULL);
if (!win->context)
_eglutFatal("failed to create context");
_eglutNativeInitWindow(win, title, x, y, w, h);
switch (_eglut->surface_type) {
case EGL_WINDOW_BIT:
win->surface = eglCreateWindowSurface(_eglut->dpy,
win->config, win->native.u.window, NULL);
break;
default:
break;
}
if (win->surface == EGL_NO_SURFACE)
_eglutFatal("failed to create surface");
return win;
}
void
eglutInitAPIMask(int mask)
{
_eglut->api_mask = mask;
}
void
eglutInitWindowSize(int width, int height)
{
_eglut->window_width = width;
_eglut->window_height = height;
}
void
eglutInit(int argc, char **argv)
{
int i;
for (i = 1; i < argc; i++) {
if (strcmp(argv[i], "-display") == 0)
_eglut->display_name = argv[++i];
else if (strcmp(argv[i], "-info") == 0) {
_eglut->verbose = 1;
}
}
_eglutNativeInitDisplay();
_eglut->dpy = eglGetDisplay(_eglut->native_dpy);
if (!eglInitialize(_eglut->dpy, &_eglut->major, &_eglut->minor))
_eglutFatal("failed to initialize EGL display");
_eglut->init_time = _eglutNow();
printf("EGL_VERSION = %s\n", eglQueryString(_eglut->dpy, EGL_VERSION));
if (_eglut->verbose) {
printf("EGL_VENDOR = %s\n", eglQueryString(_eglut->dpy, EGL_VENDOR));
printf("EGL_EXTENSIONS = %s\n",
eglQueryString(_eglut->dpy, EGL_EXTENSIONS));
printf("EGL_CLIENT_APIS = %s\n",
eglQueryString(_eglut->dpy, EGL_CLIENT_APIS));
}
}
int
eglutGet(int state)
{
int val;
switch (state) {
case EGLUT_ELAPSED_TIME:
val = _eglutNow() - _eglut->init_time;
break;
default:
val = -1;
break;
}
return val;
}
void
eglutIdleFunc(EGLUTidleCB func)
{
_eglut->idle_cb = func;
}
void
eglutPostRedisplay(void)
{
_eglut->redisplay = 1;
}
void
eglutMainLoop(void)
{
struct eglut_window *win = _eglut->current;
if (!win)
_eglutFatal("no window is created\n");
if (win->reshape_cb)
win->reshape_cb(win->native.width, win->native.height);
_eglutNativeEventLoop();
}
void
eglutFini(void)
{
eglTerminate(_eglut->dpy);
_eglutNativeFiniDisplay();
}
void
eglutDestroyWindow(int win)
{
eglMakeCurrent(_eglut->dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
_eglutDestroyWindow(_eglut->current);
}
static void
_eglutDefaultKeyboard(unsigned char key)
{
}
int
eglutCreateWindow(const char *title)
{
struct eglut_window *win;
int skinh;
win = _eglutCreateWindow(title, 20, 20,
_eglut->window_width, _eglut->window_height);
win->index = _eglut->num_windows++;
win->reshape_cb = NULL;
win->display_cb = NULL;
win->keyboard_cb = _eglutDefaultKeyboard;
win->special_cb = NULL;
if (!eglMakeCurrent(_eglut->dpy, win->surface, win->surface, win->context))
_eglutFatal("failed to make window current");
_eglut->current = win;
skinh = get_skin_height();
_eglut->render = create_render(_eglut->dpy, win->surface, TYPE_3_BORDER_WIDTH, skinh);
return win->index;
}
int
eglutGetWindowWidth(void)
{
struct eglut_window *win = _eglut->current;
return win->native.width;
}
int
eglutGetWindowHeight(void)
{
struct eglut_window *win = _eglut->current;
return win->native.height;
}
void
eglutDisplayFunc(EGLUTdisplayCB func)
{
struct eglut_window *win = _eglut->current;
win->display_cb = func;
}
void
eglutReshapeFunc(EGLUTreshapeCB func)
{
struct eglut_window *win = _eglut->current;
win->reshape_cb = func;
}
void
eglutKeyboardFunc(EGLUTkeyboardCB func)
{
struct eglut_window *win = _eglut->current;
win->keyboard_cb = func;
}
void
eglutSpecialFunc(EGLUTspecialCB func)
{
struct eglut_window *win = _eglut->current;
win->special_cb = func;
}
int atexit(void (*func)(void))
{
return 0;
};