Mercurial > sdl-ios-xcode
view src/video/uikit/SDL_uikitopenglview.h @ 3466:a288892cd24c
SDL_RenderReadPixels() needs to flush asynchronous operations before it reads.
The semantics are that it reads the back buffer, and those pixels may not be available once SDL_RenderPresent() has happened.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sat, 21 Nov 2009 05:05:19 +0000 |
parents | 99210400e8b9 |
children | f7b03b6838cb |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2009 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Sam Lantinga slouken@libsdl.org */ #import <UIKit/UIKit.h> #import <OpenGLES/EAGL.h> #import <OpenGLES/ES1/gl.h> #import <OpenGLES/ES1/glext.h> #import "SDL_uikitview.h" /* This class wraps the CAEAGLLayer from CoreAnimation into a convenient UIView subclass. The view content is basically an EAGL surface you render your OpenGL scene into. Note that setting the view non-opaque will only work if the EAGL surface has an alpha channel. */ /* *INDENT-OFF* */ @interface SDL_uikitopenglview : SDL_uikitview { @private /* The pixel dimensions of the backbuffer */ GLint backingWidth; GLint backingHeight; EAGLContext *context; /* OpenGL names for the renderbuffer and framebuffers used to render to this view */ GLuint viewRenderbuffer, viewFramebuffer; /* OpenGL name for the depth buffer that is attached to viewFramebuffer, if it exists (0 if it does not exist) */ GLuint depthRenderbuffer; } @property (nonatomic, retain, readonly) EAGLContext *context; - (void)swapBuffers; - (void)setCurrentContext; - (id)initWithFrame:(CGRect)frame retainBacking:(BOOL)retained \ rBits:(int)rBits \ gBits:(int)gBits \ bBits:(int)bBits \ aBits:(int)aBits \ depthBits:(int)depthBits; @end /* *INDENT-ON* */