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[client] egl: use eglSwapBuffersWithDamageKHR for cursor-only updates

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Instead of damaging the entire surface when rendering a cursor move,
we can use the EGL_KHR_swap_buffers_with_damage extension to only
damage the part of the window covered by the cursor. This should
reduce the cursor movement latency on Wayland.
This commit is contained in:
Quantum
2021-05-11 16:49:39 -04:00
committed by Geoffrey McRae
parent f9a9953071
commit e70cfd84fb
14 changed files with 140 additions and 15 deletions
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2
client/include/app.h
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@@ -66,7 +66,7 @@ bool app_getProp(LG_DSProperty prop, void * ret);
#ifdef ENABLE_EGL
EGLDisplay app_getEGLDisplay(void);
EGLNativeWindowType app_getEGLNativeWindow(void);
void app_eglSwapBuffers(EGLDisplay display, EGLSurface surface);
void app_eglSwapBuffers(EGLDisplay display, EGLSurface surface, const struct Rect * damage, int count);
#endif
#ifdef ENABLE_OPENGL

8
client/include/egl_dynprocs.h
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@@ -17,6 +17,8 @@ this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _H_LG_EGL_DYNPROCS_
#define _H_LG_EGL_DYNPROCS_
#ifdef ENABLE_EGL
#include <EGL/egl.h>
@@ -24,6 +26,8 @@ Place, Suite 330, Boston, MA 02111-1307 USA
typedef EGLDisplay (*eglGetPlatformDisplayEXT_t)(EGLenum platform,
void *native_display, const EGLint *attrib_list);
typedef void (*eglSwapBuffersWithDamageKHR_t)(EGLDisplay dpy,
EGLSurface surface, const EGLint *rects, EGLint n_rects);
typedef void (*glEGLImageTargetTexture2DOES_t)(GLenum target,
GLeglImageOES image);
@@ -31,6 +35,8 @@ struct EGLDynProcs
{
eglGetPlatformDisplayEXT_t eglGetPlatformDisplay;
eglGetPlatformDisplayEXT_t eglGetPlatformDisplayEXT;
eglSwapBuffersWithDamageKHR_t eglSwapBuffersWithDamageKHR;
eglSwapBuffersWithDamageKHR_t eglSwapBuffersWithDamageEXT;
glEGLImageTargetTexture2DOES_t glEGLImageTargetTexture2DOES;
};
@@ -41,3 +47,5 @@ void egl_dynProcsInit(void);
#else
#define egl_dynProcsInit(...)
#endif
#endif // _H_LG_EGL_DYNPROCS_

3
client/include/interface/displayserver.h
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@@ -22,6 +22,7 @@ Place, Suite 330, Boston, MA 02111-1307 USA
#include <stdbool.h>
#include <EGL/egl.h>
#include "common/types.h"
typedef enum LG_ClipboardData
{
@@ -115,7 +116,7 @@ struct LG_DisplayServerOps
/* EGL support */
EGLDisplay (*getEGLDisplay)(void);
EGLNativeWindowType (*getEGLNativeWindow)(void);
void (*eglSwapBuffers)(EGLDisplay display, EGLSurface surface);
void (*eglSwapBuffers)(EGLDisplay display, EGLSurface surface, const struct Rect * damage, int count);
#endif
#ifdef ENABLE_OPENGL