OpenGL context sharing
original commit: 0562755be9714940d0e88fe7f1bc53dc3e7e9aa8
This commit is contained in:
Jay Kominek
Matthew Flatt
parent
8a7dcf0638
commit
04c0da4c30
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@ -35,7 +35,7 @@
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(import-class NSView NSGraphicsContext NSScroller NSComboBox NSWindow
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NSImageView NSTextFieldCell
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NSOpenGLView NSOpenGLPixelFormat)
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NSOpenGLView NSOpenGLContext NSOpenGLPixelFormat)
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(import-protocol NSComboBoxDelegate)
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@ -354,12 +354,25 @@
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(tell (tell (if is-combo? RacketComboBox RacketView)
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alloc)
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initWithFrame: #:type _NSRect r)
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(let ([pf (gl-config->pixel-format gl-config)])
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(begin0
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(tell (tell RacketGLView alloc)
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initWithFrame: #:type _NSRect r
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pixelFormat: pf)
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(tellv pf release)))))))
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(let* ([share-context (send gl-config get-share-context)]
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[context-handle (and share-context (send share-context get-handle))]
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[pf (gl-config->pixel-format gl-config)]
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[new-context (and
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context-handle
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(tell (tell NSOpenGLContext alloc)
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initWithFormat: pf
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shareContext: context-handle))]
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[gl-view (tell (tell RacketGLView alloc)
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initWithFrame: #:type _NSRect r
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pixelFormat: pf)])
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(when new-context
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(tellv gl-view setOpenGLContext: new-context)
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;; We're supposed to sync via `setView:' but it fails,
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;; perhaps because the view isn't yet visible:
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;; (tellv new-context setView: gl-view)
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(tellv new-context release))
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(tellv pf release)
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gl-view)))))
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(tell #:type _void cocoa addSubview: content-cocoa)
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(set-ivar! content-cocoa wxb (->wxb this))
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@ -36,6 +36,7 @@
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(let ([gl-ctx (tell (send canvas get-cocoa-content) openGLContext)])
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(or gl
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(let ([g (new (class gl-context%
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(define/override (get-handle) gl-ctx)
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(define/override (do-call-as-current t)
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(dynamic-wind
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(lambda () (tellv gl-ctx makeCurrentContext))
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@ -123,6 +123,8 @@
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(init-field [gl gl]
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[drawable drawable])
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(define/override (get-handle) gl)
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(define/override (draw:do-call-as-current t)
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(dynamic-wind
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(lambda ()
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@ -146,14 +148,17 @@
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(define (prepare-widget-gl-context gtk config)
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(init!)
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(let ([config (config->GdkGLConfig #f ; (gtk_widget_get_screen gtk)
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(let ([share-context (send config get-share-context)]
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[config (config->GdkGLConfig #f ; (gtk_widget_get_screen gtk)
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(or config
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(new gl-config%))
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#t)])
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(when config
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(gtk_widget_set_gl_capability gtk
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config
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#f
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(if share-context
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(send share-context get-handle)
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#f)
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#t
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0))))
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@ -172,7 +177,9 @@
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(define (create-and-install-gl-context bm config)
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(init!)
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(let ([config (config->GdkGLConfig #f config #f)])
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(let* ([share-context (send config get-share-context)]
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[context-handle (if share-context (send share-context get-handle) #f)]
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[config (config->GdkGLConfig #f config #f)])
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(when config
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(let ([gdkpx (send bm get-gdk-pixmap)])
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(let ([glpx (gdk_pixmap_set_gl_capability gdkpx config #f)])
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@ -180,7 +187,7 @@
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(let ([gl
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;; currently uses "indirect" mode --- can we
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;; reliably use direct in some environments?
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(gdk_gl_context_new glpx #f #f GDK_GL_RGBA_TYPE)])
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(gdk_gl_context_new glpx context-handle #f GDK_GL_RGBA_TYPE)])
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(and gl
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(send bm install-gl-context
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(new gl-context%
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@ -71,6 +71,9 @@
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(define tried-multisample? #f)
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(define wglChoosePixelFormatARB #f)
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(define looked-for-createcontextattribs? #f)
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(define wglCreateContextAttribsARB #f)
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;; ----------------------------------------
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(define gl-context%
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@ -78,6 +81,8 @@
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(init-field [hglrc hglrc]
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[hdc hdc])
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(define/override (get-handle) hglrc)
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(define/override (draw:do-call-as-current t)
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(dynamic-wind
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(lambda ()
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@ -119,6 +124,7 @@
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(define (create-gl-context hdc config offscreen?
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#:try-ms? [try-ms? (not offscreen?)])
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(when try-ms? (unless tried-multisample? (init-multisample! config)))
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(unless looked-for-createcontextattribs? (init-createcontextattribs! config))
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(let* ([config (or config (new gl-config%))]
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[accum (send config get-accum-size)]
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[pfd
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@ -156,7 +162,9 @@
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wglChoosePixelFormatARB
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(or (choose-multisample hdc config offscreen? ms)
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(choose-multisample hdc config offscreen? 2)))
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(ChoosePixelFormat hdc pfd))])
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(ChoosePixelFormat hdc pfd))]
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[share-context (send config get-share-context)]
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[context-handle (if share-context (send share-context get-handle) #f)])
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(and (not (zero? pixelFormat))
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(and (SetPixelFormat hdc pixelFormat pfd)
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(begin
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@ -164,20 +172,18 @@
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(when (not (zero? (bitwise-and (PIXELFORMATDESCRIPTOR-dwFlags pfd)
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PFD_NEED_PALETTE)))
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(log-error "don't know how to create a GL palette, yet"))
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(let ([hglrc (wglCreateContext hdc)])
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(let ([hglrc (if wglCreateContextAttribsARB
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(wglCreateContextAttribsARB hdc context-handle (vector 0))
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(wglCreateContext hdc))])
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(and hglrc
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(new gl-context% [hglrc hglrc] [hdc hdc]))))))))
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(define (init-multisample! config)
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;; To create a multisampled context, we need
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;; wglChoosePixelFormatARB().
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;; To look up wglChoosePixelFormatARB(), we need
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;; an existing gl context.
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(define (with-dummy-context config thunk)
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;; To create a gl context, we need a separate window
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;; (because you can't change a window's pixel format
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;; after it is set).
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;; So, create a dummy window to make a context to
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;; try to get wglChoosePixelFormatARB().
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;; try to do whatever needs doing.
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(let ([hwnd (CreateWindowExW 0
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"PLTFrame"
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""
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@ -194,20 +200,43 @@
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(call-with-context
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(get-field hdc c)
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(get-field hglrc c)
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(lambda ()
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(set! wglChoosePixelFormatARB
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(let ([f (wglGetProcAddress "wglChoosePixelFormatARB")])
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(and f
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(function-ptr f (_wfun _HDC
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(_vector i _int)
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(_vector i _float)
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(_UINT = 1)
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(formats : (_ptr o _int))
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(num-formats : (_ptr o _UINT))
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-> (r : _BOOL)
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-> (and r formats))))))
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(set! tried-multisample? #t)))))
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(ReleaseDC hwnd hdc)))))
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thunk)))
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(ReleaseDC hwnd hdc)))))
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(define (init-createcontextattribs! config)
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;; look for wglCreateContextAttribsARB which is a beefed
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;; up version of wglCreateContext
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(set! looked-for-createcontextattribs? #t)
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(with-dummy-context config
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(lambda ()
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(set! wglCreateContextAttribsARB
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(let ([f (wglGetProcAddress "wglCreateContextAttribsARB")])
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(and f
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((allocator wglDeleteContext)
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(function-ptr f (_wfun _HDC
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_HGLRC
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(_vector i _int)
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-> _HGLRC)))))))))
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(define (init-multisample! config)
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;; To create a multisampled context, we need
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;; wglChoosePixelFormatARB().
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;; To look up wglChoosePixelFormatARB(), we need
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;; an existing gl context.
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(with-dummy-context config
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(lambda ()
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(set! wglChoosePixelFormatARB
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(let ([f (wglGetProcAddress "wglChoosePixelFormatARB")])
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(and f
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(function-ptr f (_wfun _HDC
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(_vector i _int)
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(_vector i _float)
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(_UINT = 1)
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(formats : (_ptr o _int))
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(num-formats : (_ptr o _UINT))
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-> (r : _BOOL)
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-> (and r formats))))))
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(set! tried-multisample? #t))))
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(define GL_TRUE 1)
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(define GL_FALSE 0)
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