This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
/
SDL_uikitopengles.m
executable file
·160 lines (136 loc) · 5.13 KB
/
SDL_uikitopengles.m
OlderNewer
1
2
/*
Simple DirectMedia Layer
3
Copyright (C) 1997-2012 Sam Lantinga <slouken@libsdl.org>
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
21
22
23
#include "SDL_config.h"
#if SDL_VIDEO_DRIVER_UIKIT
24
25
26
27
28
29
#include "SDL_uikitopengles.h"
#include "SDL_uikitopenglview.h"
#include "SDL_uikitappdelegate.h"
#include "SDL_uikitwindow.h"
#include "jumphack.h"
30
#include "../SDL_sysvideo.h"
31
32
#include "../../events/SDL_keyboard_c.h"
#include "../../events/SDL_mouse_c.h"
33
#include "../../power/uikit/SDL_syspower.h"
34
35
36
37
38
39
40
#include "SDL_loadso.h"
#include <dlfcn.h>
static int UIKit_GL_Initialize(_THIS);
void *
UIKit_GL_GetProcAddress(_THIS, const char *proc)
41
{
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
/* Look through all SO's for the proc symbol. Here's why:
-Looking for the path to the OpenGL Library seems not to work in the iPhone Simulator.
-We don't know that the path won't change in the future.
*/
return dlsym(RTLD_DEFAULT, proc);
}
/*
note that SDL_GL_Delete context makes it current without passing the window
*/
int UIKit_GL_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context)
{
if (context) {
SDL_WindowData *data = (SDL_WindowData *)window->driverdata;
[data->view setCurrentContext];
}
else {
[EAGLContext setCurrentContext: nil];
}
61
62
63
64
65
66
67
return 0;
}
int
UIKit_GL_LoadLibrary(_THIS, const char *path)
{
68
69
/*
shouldn't be passing a path into this function
70
71
72
73
74
75
76
77
78
79
80
81
why? Because we've already loaded the library
and because the SDK forbids loading an external SO
*/
if (path != NULL) {
SDL_SetError("iPhone GL Load Library just here for compatibility");
return -1;
}
return 0;
}
void UIKit_GL_SwapWindow(_THIS, SDL_Window * window)
{
82
#if SDL_POWER_UIKIT
83
84
// Check once a frame to see if we should turn off the battery monitor.
SDL_UIKit_UpdateBatteryMonitoring();
85
#endif
86
87
SDL_WindowData *data = (SDL_WindowData *)window->driverdata;
88
89
90
91
92
93
94
95
96
97
98
99
100
101
if (nil == data->view) {
return;
}
[data->view swapBuffers];
/* we need to let the event cycle run, or the OS won't update the OpenGL view! */
SDL_PumpEvents();
}
SDL_GLContext UIKit_GL_CreateContext(_THIS, SDL_Window * window)
{
SDL_uikitopenglview *view;
SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
102
103
104
SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
SDL_DisplayData *displaydata = display->driverdata;
SDL_DisplayModeData *displaymodedata = display->current_mode.driverdata;
105
106
107
UIWindow *uiwindow = data->uiwindow;
/* construct our view, passing in SDL's OpenGL configuration data */
108
view = [[SDL_uikitopenglview alloc] initWithFrame: [uiwindow bounds]
109
scale: displaymodedata->scale
110
111
112
113
114
115
retainBacking: _this->gl_config.retained_backing
rBits: _this->gl_config.red_size
gBits: _this->gl_config.green_size
bBits: _this->gl_config.blue_size
aBits: _this->gl_config.alpha_size
depthBits: _this->gl_config.depth_size
116
stencilBits: _this->gl_config.stencil_size
117
majorVersion: _this->gl_config.major_version];
118
119
120
if (!view) {
return NULL;
}
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
data->view = view;
view->viewcontroller = data->viewcontroller;
if (view->viewcontroller != nil) {
[view->viewcontroller setView:view];
[view->viewcontroller retain];
}
/* add the view to our window */
[uiwindow addSubview: view ];
if ( UIKit_GL_MakeCurrent(_this, window, view) < 0 ) {
UIKit_GL_DeleteContext(_this, view);
return NULL;
}
/* Make this window the current mouse focus for touch input */
138
139
140
141
if (displaydata->uiscreen == [UIScreen mainScreen]) {
SDL_SetMouseFocus(window);
SDL_SetKeyboardFocus(window);
}
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
return view;
}
void UIKit_GL_DeleteContext(_THIS, SDL_GLContext context)
{
/* the delegate has retained the view, this will release him */
SDL_uikitopenglview *view = (SDL_uikitopenglview *)context;
if (view->viewcontroller) {
[view->viewcontroller setView:nil];
[view->viewcontroller release];
}
[view removeFromSuperview];
[view release];
}
158
159
#endif /* SDL_VIDEO_DRIVER_UIKIT */
160
/* vi: set ts=4 sw=4 expandtab: */