cpp/openttd-patchpack/source Changeset - r25017:3c0a0f14110e

Changeset - r25017:3c0a0f14110e

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Michael Lutz - 4 years ago 2021-03-08 20:16:41
michi@icosahedron.de

Fix #8825: [OpenGL] Don't clear cursor cache from the game loop thread.

2 files changed with 19 insertions and 8 deletions:

src/video/opengl.cpp

src/video/opengl.h

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src/video/opengl.cpp

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@@ @@ -1051,6 +1051,19 @@ void OpenGLBackend::DrawMouseCursor() @@
 void OpenGLBackend::PopulateCursorCache()
+{
 	if (this->clear_cursor_cache) {
 		/* We have a pending cursor cache clear to do first. */
 		this->clear_cursor_cache = false;
 		this->last_sprite_pal = (PaletteID)-1;
 		Sprite *sp;
 		while ((sp = this->cursor_cache.Pop()) != nullptr) {
 			OpenGLSprite *sprite = (OpenGLSprite *)sp->data;
 			sprite->~OpenGLSprite();
 			free(sp);
+		}
+	}
 	for (uint i = 0; i < _cursor.sprite_count; ++i) {
 		SpriteID sprite = _cursor.sprite_seq[i].sprite;
@@ @@ -1070,14 +1083,11 @@ void OpenGLBackend::PopulateCursorCache( @@
  */
 void OpenGLBackend::ClearCursorCache()
+{
 	this->last_sprite_pal = (PaletteID)-1;
 	Sprite *sp;
 	while ((sp = this->cursor_cache.Pop()) != nullptr) {
 		OpenGLSprite *sprite = (OpenGLSprite *)sp->data;
 		sprite->~OpenGLSprite();
 		free(sp);
+	}
 	/* If the game loop is threaded, this function might be called
 	 * from the game thread. As we can call OpenGL functions only
 	 * on the main thread, just set a flag that is handled the next
 	 * time we prepare the cursor cache for drawing. */
 	this->clear_cursor_cache = true;
+}
 /**

src/video/opengl.h

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@@ @@ -63,6 +63,7 @@ private: @@
 	LRUCache<SpriteID, Sprite> cursor_cache;   ///< Cache of encoded cursor sprites.
 	PaletteID last_sprite_pal = (PaletteID)-1; ///< Last uploaded remap palette.
 	bool clear_cursor_cache = false;           ///< A clear of the cursor cache is pending.
 	OpenGLBackend();
 	~OpenGLBackend();

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