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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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4
client/src/app.c
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@@ -448,9 +448,9 @@ EGLNativeWindowType app_getEGLNativeWindow(void)
return g_state.ds->getEGLNativeWindow();
}
void app_eglSwapBuffers(EGLDisplay display, EGLSurface surface)
void app_eglSwapBuffers(EGLDisplay display, EGLSurface surface, const struct Rect * damage, int count)
{
g_state.ds->eglSwapBuffers(display, surface);
g_state.ds->eglSwapBuffers(display, surface, damage, count);
}
#endif

4
client/src/egl_dynprocs.c
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@@ -31,6 +31,10 @@ void egl_dynProcsInit(void)
eglGetProcAddress("eglGetPlatformDisplayEXT");
g_egl_dynProcs.glEGLImageTargetTexture2DOES = (glEGLImageTargetTexture2DOES_t)
eglGetProcAddress("glEGLImageTargetTexture2DOES");
g_egl_dynProcs.eglSwapBuffersWithDamageKHR = (eglSwapBuffersWithDamageKHR_t)
eglGetProcAddress("eglSwapBuffersWithDamageKHR");
g_egl_dynProcs.eglSwapBuffersWithDamageEXT = (eglSwapBuffersWithDamageKHR_t)
eglGetProcAddress("eglSwapBuffersWithDamageEXT");
};
#endif