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authorMichael Lutz <michi@icosahedron.de>2021-02-11 00:10:27 +0100
committerMichael Lutz <michi@icosahedron.de>2021-02-22 22:16:07 +0100
commit7f55f0a264aa6070865ac311942c3bbf7f1e1319 (patch)
treee5eb854c8eeb8091ab0c0bc875f0467d8d57f924 /src/video
parent2f25e9bdf8c8c2952ba7f8adb9bd73302fef37c2 (diff)
downloadopenttd-7f55f0a264aa6070865ac311942c3bbf7f1e1319.tar.xz
Codechange: [OSX] Add support for (un)locking the video buffer.
Diffstat (limited to 'src/video')
-rw-r--r--src/video/cocoa/cocoa_v.h15
-rw-r--r--src/video/cocoa/cocoa_v.mm33
2 files changed, 42 insertions, 6 deletions
diff --git a/src/video/cocoa/cocoa_v.h b/src/video/cocoa/cocoa_v.h
index 4d683d622..c1a645245 100644
--- a/src/video/cocoa/cocoa_v.h
+++ b/src/video/cocoa/cocoa_v.h
@@ -51,13 +51,17 @@ public:
void GameLoop();
- virtual void AllocateBackingStore() = 0;
+ virtual void AllocateBackingStore(bool force = false) = 0;
protected:
Rect dirty_rect; ///< Region of the screen that needs redrawing.
+ bool buffer_locked; ///< Video buffer was locked by the main thread.
+
Dimension GetScreenSize() const override;
float GetDPIScale() override;
void InputLoop() override;
+ bool LockVideoBuffer() override;
+ void UnlockVideoBuffer() override;
void GameSizeChanged();
@@ -69,6 +73,11 @@ protected:
virtual NSView* AllocateDrawView() = 0;
+ /** Get a pointer to the video buffer. */
+ virtual void *GetVideoPointer() = 0;
+ /** Hand video buffer back to the drawing backend. */
+ virtual void ReleaseVideoPointer() {}
+
private:
bool PollEvent();
@@ -101,13 +110,15 @@ public:
/** Return driver name */
const char *GetName() const override { return "cocoa"; }
- void AllocateBackingStore() override;
+ void AllocateBackingStore(bool force = false) override;
protected:
void Paint() override;
void CheckPaletteAnim() override;
NSView* AllocateDrawView() override;
+
+ void *GetVideoPointer() override { return this->buffer_depth == 8 ? this->pixel_buffer : this->window_buffer; }
};
class FVideoDriver_CocoaQuartz : public DriverFactoryBase {
diff --git a/src/video/cocoa/cocoa_v.mm b/src/video/cocoa/cocoa_v.mm
index 36ad0cafb..bd8340ec1 100644
--- a/src/video/cocoa/cocoa_v.mm
+++ b/src/video/cocoa/cocoa_v.mm
@@ -85,6 +85,7 @@ static const Dimension _default_resolutions[] = {
VideoDriver_Cocoa::VideoDriver_Cocoa()
{
this->setup = false;
+ this->buffer_locked = false;
this->window = nil;
this->cocoaview = nil;
@@ -238,6 +239,30 @@ float VideoDriver_Cocoa::GetDPIScale()
return this->cocoaview != nil ? [ this->cocoaview getContentsScale ] : 1.0f;
}
+/** Lock video buffer for drawing if it isn't already mapped. */
+bool VideoDriver_Cocoa::LockVideoBuffer()
+{
+ if (this->buffer_locked) return false;
+ this->buffer_locked = true;
+
+ _screen.dst_ptr = this->GetVideoPointer();
+ assert(_screen.dst_ptr != nullptr);
+
+ return true;
+}
+
+/** Unlock video buffer. */
+void VideoDriver_Cocoa::UnlockVideoBuffer()
+{
+ if (_screen.dst_ptr != nullptr) {
+ /* Hand video buffer back to the drawing backend. */
+ this->ReleaseVideoPointer();
+ _screen.dst_ptr = nullptr;
+ }
+
+ this->buffer_locked = false;
+}
+
/**
* Are we in fullscreen mode?
* @return whether fullscreen mode is currently used
@@ -366,8 +391,6 @@ bool VideoDriver_Cocoa::MakeWindow(int width, int height)
this->setup = false;
- this->AllocateBackingStore();
-
return true;
}
@@ -535,6 +558,8 @@ const char *VideoDriver_CocoaQuartz::Start(const StringList &param)
return "Could not create window";
}
+ this->AllocateBackingStore(true);
+
if (fullscreen) this->ToggleFullscreen(fullscreen);
this->GameSizeChanged();
@@ -560,7 +585,7 @@ NSView *VideoDriver_CocoaQuartz::AllocateDrawView()
}
/** Resize the window. */
-void VideoDriver_CocoaQuartz::AllocateBackingStore()
+void VideoDriver_CocoaQuartz::AllocateBackingStore(bool force)
{
if (this->window == nil || this->cocoaview == nil || this->setup) return;
@@ -608,7 +633,7 @@ void VideoDriver_CocoaQuartz::AllocateBackingStore()
_screen.width = this->window_width;
_screen.height = this->window_height;
_screen.pitch = this->buffer_depth == 8 ? this->window_width : this->window_pitch;
- _screen.dst_ptr = this->buffer_depth == 8 ? this->pixel_buffer : this->window_buffer;
+ _screen.dst_ptr = this->GetVideoPointer();
/* Redraw screen */
this->MakeDirty(0, 0, _screen.width, _screen.height);