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evas: use a shared OpenGL context in gl_cocoa backend. 

Evas GL backend uses a global OpenGL context for all windows inside
an application. Each window has its own texture to render its
content. We use a singleton NSOpenGLContext shared between all
NSOpenGLView, it solves rendering issues for multiple windows.

Signed-off-by: Cedric BAIL <cedric@osg.samsung.com>
This commit is contained in:
Romain Perier 2015-01-22 10:26:55 +01:00 committed by Cedric BAIL
parent 422178b216
commit c80d7adbc2
1 changed files with 13 additions and 1 deletions
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14
src/modules/evas/engines/gl_cocoa/evas_gl_cocoa_main.m
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@ -4,6 +4,7 @@
#include "evas_engine.h"
static Evas_GL_Cocoa_Window *_evas_gl_cocoa_window = NULL;
static NSOpenGLContext *_evas_gl_cocoa_shared_context = NULL;
@interface EvasGLView : NSOpenGLView
{
@ -43,6 +44,18 @@ static Evas_GL_Cocoa_Window *_evas_gl_cocoa_window = NULL;
{
NSOpenGLPixelFormat * pf = [EvasGLView basicPixelFormat];
self = [super initWithFrame: frameRect pixelFormat: pf];
NSOpenGLContext *ctx;
if (!_evas_gl_cocoa_shared_context) {
_evas_gl_cocoa_shared_context = [[NSOpenGLContext alloc] initWithFormat: [EvasGLView basicPixelFormat] shareContext: nil];
ctx = _evas_gl_cocoa_shared_context;
} else {
ctx = [[NSOpenGLContext alloc] initWithFormat: [EvasGLView basicPixelFormat] shareContext: _evas_gl_cocoa_shared_context];
}
[self setOpenGLContext: ctx];
[ctx setView: self];
return self;
}
@ -127,4 +140,3 @@ eng_window_resize(Evas_GL_Cocoa_Window *gw, int width, int height)
[(EvasGLView*)gw->view setFrame:view_frame];
[[(NSOpenGLView*)gw->view openGLContext] flushBuffer];
}