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nuclear@39
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1 /* SimplyGL window system module for iOS */
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nuclear@39
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2 /* mac-framework: -framework UIKit */
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3
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nuclear@39
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4 #include "config.h"
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5
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6 #ifdef USE_WSYS_MODULE_IOS
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7
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nuclear@36
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8 #include <assert.h>
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nuclear@36
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9 #import <UIKit/UIKit.h>
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10 #import <QuartzCore/QuartzCore.h>
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11 #include <OpenGLES/ES2/gl.h>
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12 #include <OpenGLES/ES2/glext.h>
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13
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14 @interface SGLView : UIView {
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15 @private
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16 BOOL active;
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17 BOOL use_disp_link;
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18 NSInteger frame_interval;
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19 id disp_link;
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20 NSTimer *anim_timer;
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21 EAGLContext *ctx;
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22 unsigned int fbo, rbuf_color, rbuf_depth;
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23 }
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24
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25 @property (readonly, nonatomic, getter=isAnimating) BOOL active;
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26 @property (nonatomic) NSInteger frame_interval;
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27
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28 -(void)start_anim;
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29 -(void)stop_anim;
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30 -(void)drawView: (id)sender;
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31 @end
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32
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33 @interface SGLDelegate : NSObject <UIApplicationDelegate> {
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34 UIWindow *win;
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35 SGLView *view;
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36 }
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37
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38 @property (nonatomic, retain) IBOutlet UIWindow *win;
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39 @property (nonatomic, retain) IBOutlet SGLView *view;
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40 @end
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41
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42
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43
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44 static int init(void);
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45 static void shutdown(void);
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46
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47 /* video mode switching */
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48 static int set_vidmode(int xsz, int ysz);
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49 static int get_vidmode(int *xsz, int *ysz);
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50
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51 /* create/destroy windows */
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52 static int create_window(int xsz, int ysz, unsigned int flags);
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53 static void close_window(int wid);
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54
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55 /* window management */
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56 static int set_active(int wid);
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57 static int set_title(const char *str);
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58 static void redisplay(void);
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59 static void swap_buffers(void);
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60
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61 static int get_modifiers(void);
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62
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63 /* event handling and friends */
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64 static void set_event(int idx, int enable);
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65 static int process_events(void);
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66
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67
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68 static struct wsys_module ws = {
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69 "ios", 0,
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70 init,
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71 shutdown,
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72 set_vidmode,
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73 get_vidmode,
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74 create_window,
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75 close_window,
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76 set_active,
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77 set_title,
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78 redisplay,
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79 swap_buffers,
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80 get_modifiers,
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81 set_event,
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82 process_events,
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83 0
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84 };
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85
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86
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87 void sgl_register_ios(void)
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88 {
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89 sgl_register_module(&ws);
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90 }
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91
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92
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93 @implementation SGLView
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94
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95 @synthesize active;
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96 @dynamic frame_interval;
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97
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98 +(Class)layerClass
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99 {
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100 return [CAEAGLLayer class];
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101 }
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102
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103 /*The EAGL view is stored in the nib file. When it's unarchived it's sent -initWithCoder: */
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104 -(id)initWithCoder: (NSCoder*)coder
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105 {
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106 if((self = [super initWithCoder: coder])) {
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nuclear@39
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107 /* Get the layer */
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108 CAEAGLLayer *layer = (CAEAGLLayer*)self.layer;
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109
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110 /*self.contentScaleFactor = 2.0; */
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111
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112 layer.opaque = TRUE;
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113 layer.drawableProperties = [NSDictionary dictionaryWithObjectsAndKeys:
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114 [NSNumber numberWithBool: FALSE],
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115 kEAGLDrawablePropertyRetainedBacking, kEAGLColorFormatRGBA8,
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116 kEAGLDrawablePropertyColorFormat,
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117 nil];
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118
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119 ctx = [[EAGLContext alloc] initWithAPI: kEAGLRenderingAPIOpenGLES2];
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120 if(!ctx || ![EAGLContext setCurrentContext: ctx]) {
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121 [self release];
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122 return nil;
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123 }
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124
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125 /* initialize fbos etc... */
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126 glGenFramebuffers(1, &fbo);
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127 glBindFramebuffer(GL_FRAMEBUFFER, fbo);
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128
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129 glGenRenderbuffers(1, &rbuf_color);
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130 glBindRenderbuffer(GL_RENDERBUFFER, rbuf_color);
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131 glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, rbuf_color);
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132
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133 glGenRenderbuffers(1, &rbuf_depth);
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134 glBindRenderbuffer(GL_RENDERBUFFER, rbuf_depth);
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135 glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, rbuf_depth);
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136 assert(glGetError() == GL_NO_ERROR);
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137
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138 active = FALSE;
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139 use_disp_link = FALSE;
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140 frame_interval = 1;
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141 disp_link = nil;
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142 anim_timer = nil;
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143
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144 /* A system version of 3.1 or greater is required to use CADisplayLink. The NSTimer */
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145 /* class is used as fallback when it isn't available. */
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146 NSString *req_ver = @"3.1";
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147 NSString *cur_ver = [[UIDevice currentDevice] systemVersion];
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148 if([cur_ver compare: req_ver options: NSNumericSearch] != NSOrderedAscending) {
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149 use_disp_link = TRUE;
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150 }
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151
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152 /*self.multipleTouchEnabled = 1; */
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153
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154 /* TODO call user init ? */
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155 }
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156
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157 return self;
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158 }
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159
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160 -(void)drawView: (id)sender
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161 {
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162 /* TODO call display */
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163 }
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164
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165 -(void)layoutSubviews
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166 {
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167 /* TODO call reshape */
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168 /* XXX originally call to renderer resizeFromLayer */
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169 /* XXX originally call to [self drawView: nil] */
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170 }
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171
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172 -(void)setAnimationFrameInterval: (NSInteger)interval
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173 {
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174 /* Frame interval defines how many display frames must pass
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175 * between each time the display link fires. The display
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176 * link will only fire 30 times a second when the frame
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177 * internal is two on a display that refreshes 60 times a
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178 * second. The default frame interval setting of one will
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179 * fire 60 times a second when the display refreshes at 60
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180 * times a second. A frame interval setting of less than
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181 * one results in undefined behavior.
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182 */
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183 if(interval >= 1) {
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184 frame_interval = frame_interval;
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185
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186 if(active)
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187 {
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188 [self stop_anim];
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189 [self start_anim];
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190 }
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191 }
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192 }
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193
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194 -(void)start_anim
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195 {
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196 if(!active) {
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197 if(use_disp_link) {
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198 /* CADisplayLink is API new to iPhone SDK 3.1. Compiling against earlier versions will result in a warning, but can be dismissed
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199 * if the system version runtime check for CADisplayLink exists in -initWithCoder:. The runtime check ensures this code will
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200 * not be called in system versions earlier than 3.1.
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201 */
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202
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203 disp_link = [NSClassFromString(@"CADisplayLink") displayLinkWithTarget: self
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204 selector: @selector(drawView:)];
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205 [disp_link setFrameInterval: frame_interval];
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206 [disp_link addToRunLoop: [NSRunLoop currentRunLoop] forMode: NSDefaultRunLoopMode];
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207 } else {
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208 anim_timer = [NSTimer scheduledTimerWithTimeInterval: (NSTimeInterval)((1.0 / 60.0) * frame_interval)
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209 target: self selector: @selector(drawView:) userInfo: nil
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210 repeats: TRUE];
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211 }
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212
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213 active = TRUE;
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214 }
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215 }
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216
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217 - (void)stop_anim
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218 {
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219 if(active) {
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220 if(use_disp_link) {
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221 [disp_link invalidate];
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222 disp_link = nil;
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223 } else {
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224 [anim_timer invalidate];
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225 anim_timer = nil;
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226 }
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227
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228 active = FALSE;
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229 }
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230 }
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231
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232 -(void)dealloc
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233 {
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234 /* XXX originally [renderer release]; */
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235 [super dealloc];
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236 }
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237 @end
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238
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239 @implementation SGLDelegate
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240
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241 @synthesize win;
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242 @synthesize view;
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243
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244 -(BOOL)application: (UIApplication*)app didFinishLaunchingWithOptions: (NSDictionary*)opt
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245 {
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246 [view start_anim];
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247 return YES;
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248 }
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249
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250 -(void)applicationWillResignActive: (UIApplication*)app
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251 {
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252 [view stop_anim];
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253 }
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254
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255 -(void)applicationDidBecomeActive: (UIApplication*)app
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256 {
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257 [view start_anim];
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258 }
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259
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260 -(void)applicationWillTerminate: (UIApplication*)app
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261 {
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262 [view stop_anim];
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263 }
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264
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265 -(void)dealloc
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266 {
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267 [win release];
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268 [view release];
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269 [super dealloc];
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270 }
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271 @end
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272
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273
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274
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275 static int init(void)
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276 {
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277 return -1;
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278 }
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279
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280 static void shutdown(void)
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281 {
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282 }
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283
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284 /* video mode switching */
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285 static int set_vidmode(int xsz, int ysz)
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286 {
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287 return -1;
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288 }
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289
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290 static int get_vidmode(int *xsz, int *ysz)
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291 {
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292 return -1;
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293 }
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294
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295 /* create/destroy windows */
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296 static int create_window(int xsz, int ysz, unsigned int flags)
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297 {
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298 return -1;
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299 }
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300
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301 static void close_window(int wid)
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302 {
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303 }
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304
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305 /* window management */
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306 static int set_active(int wid)
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307 {
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308 return -1;
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309 }
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310
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311 static int set_title(const char *str)
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312 {
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313 return -1;
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314 }
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315
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316 static void redisplay(void)
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317 {
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318 }
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319
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320 static void swap_buffers(void)
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321 {
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322 }
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323
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324 static int get_modifiers(void)
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325 {
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326 return 0;
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327 }
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328
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329 /* event handling and friends */
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330 static void set_event(int idx, int enable)
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331 {
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332 }
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333
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334 static int process_events(void)
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335 {
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336 return -1;
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337 }
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338
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339
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340
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341
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342
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343 /* only compile the following if we're building in xcode and we
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344 * don't have generated modules.c file
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345 */
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346 #ifdef XCODE_BUILD
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347 @interface sgl : NSObject
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348 /* XXX no need for init yet... */
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349 @end
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350
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351 @implementation sgl
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352
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353 - (id)init
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354 {
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355 self = [super init];
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356 if(self) {
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357 /* XXX Initialization code here. */
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358 }
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359 return self;
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360 }
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361
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362 @end
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363
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364 void sgl_modules_init(void)
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365 {
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366 sgl_register_uikit();
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367 }
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368
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369 #endif /* XCODE_BUILD */
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370
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371
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nuclear@39
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372 #else
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373 int sgl_wsys_ios_silence_the_fucking_empty_file_warnings;
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374 #endif /* USE_WSYS_MODULE_IOS */
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