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563ad18f4e
1. Use atomics and return exact cursor positions from egl_cursor_render to avoid race conditions between cursor render and update. 2. Instead of messing with lastCursorValid in various overlays, simply use the hasOverlay/hadOverlay logic for cursor damage. This simplifies the logic greatly. As a result, I believe all cursor-related artifacts are fixed. Note to reviewer: as atomic_init and atomic_store are implemented as macros, it is currently not possible to pass structs as compound literals due to the comma being interpreted as an argument separator by the preprocessor.
51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
/**
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* Looking Glass
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* Copyright (C) 2017-2021 The Looking Glass Authors
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* https://looking-glass.io
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc., 59
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* Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#pragma once
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#include <stdbool.h>
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#include "interface/renderer.h"
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typedef struct EGL_Cursor EGL_Cursor;
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struct CursorState {
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bool visible;
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struct Rect rect;
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};
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bool egl_cursor_init(EGL_Cursor ** cursor);
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void egl_cursor_free(EGL_Cursor ** cursor);
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bool egl_cursor_set_shape(
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EGL_Cursor * cursor,
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const LG_RendererCursor type,
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const int width,
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const int height,
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const int stride,
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const uint8_t * data);
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void egl_cursor_set_size(EGL_Cursor * cursor, const float x, const float y);
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void egl_cursor_set_state(EGL_Cursor * cursor, const bool visible,
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const float x, const float y);
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struct CursorState egl_cursor_render(EGL_Cursor * cursor, LG_RendererRotate rotate,
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int width, int height);
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