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https://github.com/Relintai/sdl2_frt.git
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3672409c51
Previously, SDL would always expose display modes and window dimensions in terms of pixels, and would add an extra 'fake' display mode on retina screens which would contain the non-retina resolution. Calling SDL_CreateWindow with the dimensions of that fake display mode would not work. Now, SDL only exposes display modes and window dimensions in terms of points rather than pixels. If the SDL_WINDOW_ALLOW_HIGHDPI flag is passed into SDL_CreateWindow, then any OpenGL contexts created from that window will be sized in pixels rather than points (retrievable with SDL_GL_GetDrawableSize.) Window dimensions and mouse coordinates are still in terms of points rather than pixels even with that flag. This matches the behavior of SDL in OS X more closely, and lets users choose whether to make use of retina displays and lets them handle it properly.
91 lines
2.8 KiB
Objective-C
91 lines
2.8 KiB
Objective-C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#import <UIKit/UIKit.h>
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#import <OpenGLES/EAGL.h>
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#import <OpenGLES/ES1/gl.h>
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#import <OpenGLES/ES1/glext.h>
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#import "SDL_uikitview.h"
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/*
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This class wraps the CAEAGLLayer from CoreAnimation into a convenient UIView subclass.
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The view content is basically an EAGL surface you render your OpenGL scene into.
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Note that setting the view non-opaque will only work if the EAGL surface has an alpha channel.
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*/
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@interface SDL_uikitopenglview : SDL_uikitview {
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@private
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/* The pixel dimensions of the backbuffer */
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GLint backingWidth;
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GLint backingHeight;
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EAGLContext *context;
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/* OpenGL names for the renderbuffer and framebuffers used to render to this view */
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GLuint viewRenderbuffer, viewFramebuffer;
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/* OpenGL name for the depth buffer that is attached to viewFramebuffer, if it exists (0 if it does not exist) */
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GLuint depthRenderbuffer;
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/* format of depthRenderbuffer */
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GLenum depthBufferFormat;
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id displayLink;
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int animationInterval;
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void (*animationCallback)(void*);
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void *animationCallbackParam;
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}
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@property (nonatomic, retain, readonly) EAGLContext *context;
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/* The width and height of the drawable in pixels (as opposed to points.) */
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@property (nonatomic, readonly) int backingWidth;
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@property (nonatomic, readonly) int backingHeight;
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- (void)swapBuffers;
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- (void)setCurrentContext;
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- (id)initWithFrame:(CGRect)frame
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scale:(CGFloat)scale
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retainBacking:(BOOL)retained
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rBits:(int)rBits
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gBits:(int)gBits
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bBits:(int)bBits
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aBits:(int)aBits
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depthBits:(int)depthBits
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stencilBits:(int)stencilBits
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majorVersion:(int)majorVersion
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shareGroup:(EAGLSharegroup*)shareGroup;
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- (void)updateFrame;
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- (void)setAnimationCallback:(int)interval
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callback:(void (*)(void*))callback
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callbackParam:(void*)callbackParam;
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- (void)startAnimation;
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- (void)stopAnimation;
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- (void)doLoop:(CADisplayLink*)sender;
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@end
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/* vi: set ts=4 sw=4 expandtab: */
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