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annotate src/video/uikit/SDL_uikitopenglview.h @ 3454:77366fae0094

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Adjust the vertices to be over the texel center.
author Sam Lantinga <slouken@libsdl.org>
date Thu, 19 Nov 2009 04:33:35 +0000
parents 99210400e8b9
children f7b03b6838cb
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 #import <UIKit/UIKit.h>
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24 #import <OpenGLES/EAGL.h>
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25 #import <OpenGLES/ES1/gl.h>
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26 #import <OpenGLES/ES1/glext.h>
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27 #import "SDL_uikitview.h"
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28 /*
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29 This class wraps the CAEAGLLayer from CoreAnimation into a convenient UIView subclass.
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30 The view content is basically an EAGL surface you render your OpenGL scene into.
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31 Note that setting the view non-opaque will only work if the EAGL surface has an alpha channel.
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32 */
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33 /* *INDENT-OFF* */
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34 @interface SDL_uikitopenglview : SDL_uikitview {
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35
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36 @private
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37 /* The pixel dimensions of the backbuffer */
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38 GLint backingWidth;
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39 GLint backingHeight;
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40
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41 EAGLContext *context;
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42
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43 /* OpenGL names for the renderbuffer and framebuffers used to render to this view */
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44 GLuint viewRenderbuffer, viewFramebuffer;
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45
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46 /* OpenGL name for the depth buffer that is attached to viewFramebuffer, if it exists (0 if it does not exist) */
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47 GLuint depthRenderbuffer;
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48
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49 }
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50
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51 @property (nonatomic, retain, readonly) EAGLContext *context;
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52
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53 - (void)swapBuffers;
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54 - (void)setCurrentContext;
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56 - (id)initWithFrame:(CGRect)frame
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57 retainBacking:(BOOL)retained \
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58 rBits:(int)rBits \
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59 gBits:(int)gBits \
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60 bBits:(int)bBits \
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61 aBits:(int)aBits \
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62 depthBits:(int)depthBits;
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63
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64 @end
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65 /* *INDENT-ON* */