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Got rid of the thread hopping in order to redraw the GL view. Which appears to help significantly with total application cost.

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This commit is contained in:
Thomas Harte 2015-08-13 22:01:25 +01:00
parent 92c7d56cc3
commit cbe76ea5d5
2 changed files with 32 additions and 22 deletions
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10
OSBindings/Mac/Clock Signal/CSAtari2600.mm
View File

@ -43,14 +43,10 @@ struct Atari2600CRTDelegate: public Outputs::CRT::CRTDelegate {
_failedVSyncCount = MAX(_failedVSyncCount - 1, 0);
}
dispatch_async(dispatch_get_main_queue(), ^{
BOOL hasReturn = [self.view pushFrame:frame];
BOOL hasReturn = [self.view pushFrame:frame];
if(hasReturn)
dispatch_async(_serialDispatchQueue, ^{
_atari2600.get_crt()->return_frame();
});
});
if(hasReturn)
_atari2600.get_crt()->return_frame();
}
- (void)runForNumberOfCycles:(int)cycles {

44
OSBindings/Mac/Clock Signal/CSCathodeRayView.m
View File

@ -91,9 +91,13 @@ static CVReturn DisplayLinkCallback(CVDisplayLinkRef displayLink, const CVTimeSt
[super reshape];
[self.openGLContext makeCurrentContext];
CGLLockContext([[self openGLContext] CGLContextObj]);
NSPoint backingSize = {.x = self.bounds.size.width, .y = self.bounds.size.height};
NSPoint viewSize = [self convertPointToBacking:backingSize];
glViewport(0, 0, viewSize.x, viewSize.y);
CGLUnlockContext([[self openGLContext] CGLContextObj]);
}
- (void) awakeFromNib
@ -138,26 +142,27 @@ static CVReturn DisplayLinkCallback(CVDisplayLinkRef displayLink, const CVTimeSt
- (BOOL)pushFrame:(CRTFrame * __nonnull)crtFrame
{
[[self openGLContext] makeCurrentContext];
CGLLockContext([[self openGLContext] CGLContextObj]);
BOOL hadFrame = _crtFrame ? YES : NO;
_crtFrame = crtFrame;
[self setNeedsDisplay:YES];
if(crtFrame)
glBufferData(GL_ARRAY_BUFFER, _crtFrame->number_of_runs * kCRTSizeOfVertex * 6, _crtFrame->runs, GL_DYNAMIC_DRAW);
glBindTexture(GL_TEXTURE_2D, _textureName);
if(_textureSize.width != _crtFrame->size.width || _textureSize.height != _crtFrame->size.height)
{
[self.openGLContext makeCurrentContext];
glBufferData(GL_ARRAY_BUFFER, _crtFrame->number_of_runs * kCRTSizeOfVertex * 6, _crtFrame->runs, GL_DYNAMIC_DRAW);
glBindTexture(GL_TEXTURE_2D, _textureName);
if(_textureSize.width != _crtFrame->size.width || _textureSize.height != _crtFrame->size.height)
{
GLint format = [self formatForDepth:_crtFrame->buffers[0].depth];
glTexImage2D(GL_TEXTURE_2D, 0, format, _crtFrame->size.width, _crtFrame->size.height, 0, format, GL_UNSIGNED_BYTE, _crtFrame->buffers[0].data);
_textureSize = _crtFrame->size;
}
else
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, _crtFrame->size.width, _crtFrame->dirty_size.height, [self formatForDepth:_crtFrame->buffers[0].depth], GL_UNSIGNED_BYTE, _crtFrame->buffers[0].data);
GLint format = [self formatForDepth:_crtFrame->buffers[0].depth];
glTexImage2D(GL_TEXTURE_2D, 0, format, _crtFrame->size.width, _crtFrame->size.height, 0, format, GL_UNSIGNED_BYTE, _crtFrame->buffers[0].data);
_textureSize = _crtFrame->size;
}
else
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, _crtFrame->size.width, _crtFrame->dirty_size.height, [self formatForDepth:_crtFrame->buffers[0].depth], GL_UNSIGNED_BYTE, _crtFrame->buffers[0].data);
[self drawView];
CGLUnlockContext([[self openGLContext] CGLContextObj]);
return hadFrame;
}
@ -275,8 +280,14 @@ const char *fragmentShader =
}
- (void)drawRect:(NSRect)dirtyRect
{
[self drawView];
}
- (void)drawView
{
[self.openGLContext makeCurrentContext];
CGLLockContext([[self openGLContext] CGLContextObj]);
glClear(GL_COLOR_BUFFER_BIT);
@ -287,6 +298,9 @@ const char *fragmentShader =
}
glSwapAPPLE();
CGLFlushDrawable([[self openGLContext] CGLContextObj]);
CGLUnlockContext([[self openGLContext] CGLContextObj]);
}
@end