| 1 | /////////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: src/osx/iphone/glcanvas.mm |
| 3 | // Purpose: wxGLCanvas, for using OpenGL with wxWidgets under iPhone |
| 4 | // Author: Stefan Csomor |
| 5 | // Modified by: |
| 6 | // Created: 1998-01-01 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) Stefan Csomor |
| 9 | // Licence: wxWindows licence |
| 10 | /////////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | // ============================================================================ |
| 13 | // declarations |
| 14 | // ============================================================================ |
| 15 | |
| 16 | // ---------------------------------------------------------------------------- |
| 17 | // headers |
| 18 | // ---------------------------------------------------------------------------- |
| 19 | |
| 20 | #include "wx/wxprec.h" |
| 21 | |
| 22 | #if defined(__BORLANDC__) |
| 23 | #pragma hdrstop |
| 24 | #endif |
| 25 | |
| 26 | #if wxUSE_GLCANVAS |
| 27 | |
| 28 | #include "wx/glcanvas.h" |
| 29 | |
| 30 | #ifndef WX_PRECOMP |
| 31 | #include "wx/frame.h" |
| 32 | #include "wx/log.h" |
| 33 | #include "wx/settings.h" |
| 34 | #endif |
| 35 | |
| 36 | #include "wx/osx/private.h" |
| 37 | |
| 38 | #import <OpenGLES/EAGL.h> |
| 39 | #import <OpenGLES/EAGLDrawable.h> |
| 40 | #import <QuartzCore/QuartzCore.h> |
| 41 | |
| 42 | // a lot of the code is from the OpenGL ES Template |
| 43 | |
| 44 | // can be turned on for ES 2.0 only |
| 45 | #define USE_DEPTH_BUFFER 0 |
| 46 | |
| 47 | @interface wxUICustomOpenGLView : UIView |
| 48 | { |
| 49 | CGRect oldRect; |
| 50 | EAGLContext* context; |
| 51 | |
| 52 | /* The pixel dimensions of the backbuffer */ |
| 53 | GLint backingWidth; |
| 54 | GLint backingHeight; |
| 55 | |
| 56 | /* OpenGL names for the renderbuffer and framebuffers used to render to this view */ |
| 57 | GLuint viewRenderbuffer, viewFramebuffer; |
| 58 | |
| 59 | /* OpenGL name for the depth buffer that is attached to viewFramebuffer, if it exists (0 if it does not exist) */ |
| 60 | GLuint depthRenderbuffer; |
| 61 | } |
| 62 | |
| 63 | - (BOOL) createFramebuffer; |
| 64 | - (void) destroyFramebuffer; |
| 65 | - (id) initWithFrame:(CGRect) rect; |
| 66 | |
| 67 | @end |
| 68 | |
| 69 | @implementation wxUICustomOpenGLView |
| 70 | |
| 71 | + (Class)layerClass { |
| 72 | return [CAEAGLLayer class]; |
| 73 | } |
| 74 | |
| 75 | + (void)initialize |
| 76 | { |
| 77 | static BOOL initialized = NO; |
| 78 | if (!initialized) |
| 79 | { |
| 80 | initialized = YES; |
| 81 | wxOSXIPhoneClassAddWXMethods( self ); |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | - (id) initWithFrame:(CGRect)rect |
| 86 | { |
| 87 | if ( !(self=[super initWithFrame:rect]) ) |
| 88 | return nil; |
| 89 | |
| 90 | oldRect = rect; |
| 91 | return self; |
| 92 | } |
| 93 | |
| 94 | - (BOOL)isOpaque |
| 95 | { |
| 96 | return YES; |
| 97 | } |
| 98 | |
| 99 | - (BOOL)createFramebuffer { |
| 100 | |
| 101 | glGenFramebuffersOES(1, &viewFramebuffer); |
| 102 | glGenRenderbuffersOES(1, &viewRenderbuffer); |
| 103 | glEnable(GL_CULL_FACE); |
| 104 | |
| 105 | glBindFramebufferOES(GL_FRAMEBUFFER_OES, viewFramebuffer); |
| 106 | glBindRenderbufferOES(GL_RENDERBUFFER_OES, viewRenderbuffer); |
| 107 | [context renderbufferStorage:GL_RENDERBUFFER_OES fromDrawable:(CAEAGLLayer*)self.layer]; |
| 108 | glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, viewRenderbuffer); |
| 109 | |
| 110 | glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_WIDTH_OES, &backingWidth); |
| 111 | glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_HEIGHT_OES, &backingHeight); |
| 112 | |
| 113 | if (USE_DEPTH_BUFFER) { |
| 114 | glGenRenderbuffersOES(1, &depthRenderbuffer); |
| 115 | glBindRenderbufferOES(GL_RENDERBUFFER_OES, depthRenderbuffer); |
| 116 | glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_DEPTH_COMPONENT16_OES, backingWidth, backingHeight); |
| 117 | glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, GL_DEPTH_ATTACHMENT_OES, GL_RENDERBUFFER_OES, depthRenderbuffer); |
| 118 | } |
| 119 | |
| 120 | if(glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES) != GL_FRAMEBUFFER_COMPLETE_OES) { |
| 121 | NSLog(@"failed to make complete framebuffer object %x", glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES)); |
| 122 | return NO; |
| 123 | } |
| 124 | |
| 125 | return YES; |
| 126 | } |
| 127 | |
| 128 | |
| 129 | - (void)destroyFramebuffer { |
| 130 | |
| 131 | glDeleteFramebuffersOES(1, &viewFramebuffer); |
| 132 | viewFramebuffer = 0; |
| 133 | glDeleteRenderbuffersOES(1, &viewRenderbuffer); |
| 134 | viewRenderbuffer = 0; |
| 135 | |
| 136 | if(depthRenderbuffer) { |
| 137 | glDeleteRenderbuffersOES(1, &depthRenderbuffer); |
| 138 | depthRenderbuffer = 0; |
| 139 | } |
| 140 | } |
| 141 | |
| 142 | - (void) setContext:(EAGLContext*) ctx { |
| 143 | context = ctx; |
| 144 | [EAGLContext setCurrentContext:ctx]; |
| 145 | |
| 146 | if ( viewFramebuffer == 0 ) |
| 147 | { |
| 148 | [self destroyFramebuffer]; |
| 149 | [self createFramebuffer]; |
| 150 | } |
| 151 | |
| 152 | glBindFramebufferOES(GL_FRAMEBUFFER_OES, viewFramebuffer); |
| 153 | } |
| 154 | |
| 155 | - (void) swapBuffers { |
| 156 | glBindRenderbufferOES(GL_RENDERBUFFER_OES, viewRenderbuffer); |
| 157 | [context presentRenderbuffer:GL_RENDERBUFFER_OES]; |
| 158 | } |
| 159 | |
| 160 | - (void)layoutSubviews { |
| 161 | [EAGLContext setCurrentContext:context]; |
| 162 | [self destroyFramebuffer]; |
| 163 | [self createFramebuffer]; |
| 164 | } |
| 165 | |
| 166 | @end |
| 167 | |
| 168 | |
| 169 | WXGLContext WXGLCreateContext( WXGLPixelFormat pixelFormat, WXGLContext shareContext ) |
| 170 | { |
| 171 | WXGLContext context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES1]; |
| 172 | |
| 173 | // [[EAGLContext alloc] initWithFormat:pixelFormat shareContext: shareContext]; |
| 174 | if ( !context ) |
| 175 | wxFAIL_MSG("NSOpenGLContext creation failed"); |
| 176 | return context ; |
| 177 | } |
| 178 | |
| 179 | void WXGLDestroyContext( WXGLContext context ) |
| 180 | { |
| 181 | if ( context ) |
| 182 | { |
| 183 | [context release]; |
| 184 | } |
| 185 | } |
| 186 | |
| 187 | WXGLContext WXGLGetCurrentContext() |
| 188 | { |
| 189 | return [EAGLContext currentContext]; |
| 190 | } |
| 191 | |
| 192 | bool WXGLSetCurrentContext(WXGLContext context) |
| 193 | { |
| 194 | [EAGLContext setCurrentContext:context]; |
| 195 | return true; |
| 196 | } |
| 197 | |
| 198 | void WXGLDestroyPixelFormat( WXGLPixelFormat pixelFormat ) |
| 199 | { |
| 200 | /* |
| 201 | if ( pixelFormat ) |
| 202 | { |
| 203 | [pixelFormat release]; |
| 204 | } |
| 205 | */ |
| 206 | } |
| 207 | |
| 208 | |
| 209 | WXGLPixelFormat WXGLChoosePixelFormat(const int *attribList) |
| 210 | { |
| 211 | #if 0 |
| 212 | NSOpenGLPixelFormatAttribute data[512]; |
| 213 | const NSOpenGLPixelFormatAttribute defaultAttribs[] = |
| 214 | { |
| 215 | NSOpenGLPFADoubleBuffer, |
| 216 | NSOpenGLPFAMinimumPolicy, |
| 217 | NSOpenGLPFAColorSize,(NSOpenGLPixelFormatAttribute)8, |
| 218 | NSOpenGLPFAAlphaSize,(NSOpenGLPixelFormatAttribute)0, |
| 219 | NSOpenGLPFADepthSize,(NSOpenGLPixelFormatAttribute)8, |
| 220 | (NSOpenGLPixelFormatAttribute)nil |
| 221 | }; |
| 222 | |
| 223 | const NSOpenGLPixelFormatAttribute *attribs; |
| 224 | if ( !attribList ) |
| 225 | { |
| 226 | attribs = defaultAttribs; |
| 227 | } |
| 228 | else |
| 229 | { |
| 230 | unsigned p = 0; |
| 231 | data[p++] = NSOpenGLPFAMinimumPolicy; // make _SIZE tags behave more like GLX |
| 232 | |
| 233 | for ( unsigned arg = 0; attribList[arg] !=0 && p < WXSIZEOF(data); ) |
| 234 | { |
| 235 | switch ( attribList[arg++] ) |
| 236 | { |
| 237 | case WX_GL_RGBA: |
| 238 | //data[p++] = AGL_RGBA; |
| 239 | break; |
| 240 | |
| 241 | case WX_GL_BUFFER_SIZE: |
| 242 | //data[p++] = AGL_BUFFER_SIZE; |
| 243 | //data[p++] = attribList[arg++]; |
| 244 | break; |
| 245 | |
| 246 | case WX_GL_LEVEL: |
| 247 | //data[p++]=AGL_LEVEL; |
| 248 | //data[p++]=attribList[arg++]; |
| 249 | break; |
| 250 | |
| 251 | case WX_GL_DOUBLEBUFFER: |
| 252 | data[p++] = NSOpenGLPFADoubleBuffer; |
| 253 | break; |
| 254 | |
| 255 | case WX_GL_STEREO: |
| 256 | data[p++] = NSOpenGLPFAStereo; |
| 257 | break; |
| 258 | |
| 259 | case WX_GL_AUX_BUFFERS: |
| 260 | data[p++] = NSOpenGLPFAAuxBuffers; |
| 261 | data[p++] = (NSOpenGLPixelFormatAttribute) attribList[arg++]; |
| 262 | break; |
| 263 | |
| 264 | case WX_GL_MIN_RED: |
| 265 | data[p++] = NSOpenGLPFAColorSize; |
| 266 | data[p++] = (NSOpenGLPixelFormatAttribute) attribList[arg++]; |
| 267 | break; |
| 268 | |
| 269 | case WX_GL_MIN_GREEN: |
| 270 | //data[p++] = AGL_GREEN_SIZE; |
| 271 | //data[p++] = attribList[arg++]; |
| 272 | break; |
| 273 | |
| 274 | case WX_GL_MIN_BLUE: |
| 275 | //data[p++] = AGL_BLUE_SIZE; |
| 276 | //data[p++] = attribList[arg++]; |
| 277 | break; |
| 278 | |
| 279 | case WX_GL_MIN_ALPHA: |
| 280 | data[p++] = NSOpenGLPFAAlphaSize; |
| 281 | data[p++] = (NSOpenGLPixelFormatAttribute) attribList[arg++]; |
| 282 | break; |
| 283 | |
| 284 | case WX_GL_DEPTH_SIZE: |
| 285 | data[p++] = NSOpenGLPFADepthSize; |
| 286 | data[p++] = (NSOpenGLPixelFormatAttribute) attribList[arg++]; |
| 287 | break; |
| 288 | |
| 289 | case WX_GL_STENCIL_SIZE: |
| 290 | data[p++] = NSOpenGLPFAStencilSize; |
| 291 | data[p++] = (NSOpenGLPixelFormatAttribute) attribList[arg++]; |
| 292 | break; |
| 293 | |
| 294 | case WX_GL_MIN_ACCUM_RED: |
| 295 | data[p++] = NSOpenGLPFAAccumSize; |
| 296 | data[p++] = (NSOpenGLPixelFormatAttribute) attribList[arg++]; |
| 297 | break; |
| 298 | |
| 299 | case WX_GL_MIN_ACCUM_GREEN: |
| 300 | //data[p++] = AGL_ACCUM_GREEN_SIZE; |
| 301 | //data[p++] = attribList[arg++]; |
| 302 | break; |
| 303 | |
| 304 | case WX_GL_MIN_ACCUM_BLUE: |
| 305 | //data[p++] = AGL_ACCUM_BLUE_SIZE; |
| 306 | //data[p++] = attribList[arg++]; |
| 307 | break; |
| 308 | |
| 309 | case WX_GL_MIN_ACCUM_ALPHA: |
| 310 | //data[p++] = AGL_ACCUM_ALPHA_SIZE; |
| 311 | //data[p++] = attribList[arg++]; |
| 312 | break; |
| 313 | |
| 314 | case WX_GL_SAMPLE_BUFFERS: |
| 315 | if ( !wxGLCanvas::IsAGLMultiSampleAvailable() ) |
| 316 | { |
| 317 | if ( !attribList[arg++] ) |
| 318 | break; |
| 319 | |
| 320 | return false; |
| 321 | } |
| 322 | |
| 323 | data[p++] = NSOpenGLPFASampleBuffers; |
| 324 | if ( (data[p++] = (NSOpenGLPixelFormatAttribute) attribList[arg++]) == true ) |
| 325 | { |
| 326 | // don't use software fallback |
| 327 | data[p++] = NSOpenGLPFANoRecovery; |
| 328 | } |
| 329 | break; |
| 330 | |
| 331 | case WX_GL_SAMPLES: |
| 332 | if ( !wxGLCanvas::IsAGLMultiSampleAvailable() ) |
| 333 | { |
| 334 | if ( !attribList[arg++] ) |
| 335 | break; |
| 336 | |
| 337 | return false; |
| 338 | } |
| 339 | |
| 340 | data[p++] = NSOpenGLPFASamples; |
| 341 | data[p++] = (NSOpenGLPixelFormatAttribute) attribList[arg++]; |
| 342 | break; |
| 343 | } |
| 344 | } |
| 345 | |
| 346 | data[p] = (NSOpenGLPixelFormatAttribute)nil; |
| 347 | |
| 348 | attribs = data; |
| 349 | } |
| 350 | |
| 351 | return [[NSOpenGLPixelFormat alloc] initWithAttributes:(NSOpenGLPixelFormatAttribute*) attribs]; |
| 352 | #endif |
| 353 | return NULL; |
| 354 | } |
| 355 | |
| 356 | bool wxGLContext::SetCurrent(const wxGLCanvas& win) const |
| 357 | { |
| 358 | if ( !m_glContext ) |
| 359 | return false; |
| 360 | |
| 361 | wxUICustomOpenGLView* v = (wxUICustomOpenGLView*) win.GetPeer()->GetWXWidget(); |
| 362 | [v setContext:m_glContext]; |
| 363 | return true; |
| 364 | } |
| 365 | |
| 366 | #define USE_SEPARATE_VIEW 1 |
| 367 | |
| 368 | bool wxGLCanvas::Create(wxWindow *parent, |
| 369 | wxWindowID id, |
| 370 | const wxPoint& pos, |
| 371 | const wxSize& size, |
| 372 | long style, |
| 373 | const wxString& name, |
| 374 | const int *attribList, |
| 375 | const wxPalette& WXUNUSED(palette)) |
| 376 | { |
| 377 | /* |
| 378 | m_glFormat = WXGLChoosePixelFormat(attribList); |
| 379 | if ( !m_glFormat ) |
| 380 | return false; |
| 381 | */ |
| 382 | #if USE_SEPARATE_VIEW |
| 383 | DontCreatePeer(); |
| 384 | #endif |
| 385 | |
| 386 | if ( !wxWindow::Create(parent, id, pos, size, style, name) ) |
| 387 | return false; |
| 388 | |
| 389 | #if USE_SEPARATE_VIEW |
| 390 | CGRect r = wxOSXGetFrameForControl( this, pos , size ) ; |
| 391 | wxUICustomOpenGLView* v = [[wxUICustomOpenGLView alloc] initWithFrame:r]; |
| 392 | CAEAGLLayer* eaglLayer = (CAEAGLLayer*) v.layer; |
| 393 | eaglLayer.opaque = YES; |
| 394 | eaglLayer.drawableProperties = [NSDictionary dictionaryWithObjectsAndKeys: |
| 395 | [NSNumber numberWithBool:NO], kEAGLDrawablePropertyRetainedBacking, |
| 396 | kEAGLColorFormatRGBA8, kEAGLDrawablePropertyColorFormat, nil]; |
| 397 | |
| 398 | SetPeer(new wxWidgetIPhoneImpl( this, v )); |
| 399 | |
| 400 | MacPostControlCreate(pos, size) ; |
| 401 | #endif |
| 402 | return true; |
| 403 | } |
| 404 | |
| 405 | wxGLCanvas::~wxGLCanvas() |
| 406 | { |
| 407 | if ( m_glFormat ) |
| 408 | WXGLDestroyPixelFormat(m_glFormat); |
| 409 | } |
| 410 | |
| 411 | bool wxGLCanvas::SwapBuffers() |
| 412 | { |
| 413 | WXGLContext context = WXGLGetCurrentContext(); |
| 414 | wxCHECK_MSG(context, false, wxT("should have current context")); |
| 415 | |
| 416 | wxUICustomOpenGLView* v = (wxUICustomOpenGLView*) GetPeer()->GetWXWidget(); |
| 417 | [v swapBuffers]; |
| 418 | return true; |
| 419 | } |
| 420 | |
| 421 | |
| 422 | #endif // wxUSE_GLCANVAS |