cmake: add ENABLE_EGL_ASYNC_BUFFER_SWAPPING option (#362)

This change adds ENABLE_EGL_ASYNC_BUFFER_SWAPPING not to sync compositor redraw (vblank). Related issue #220 Signed-off-by: Hidenori Matsubayashi <[email protected]>
sony · Aug 7, 2023 · e5646da · e5646da
1 parent 83d9b6f
commit e5646da
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diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -15,6 +15,7 @@ option(USE_DIRTY_REGION_MANAGEMENT "Use Flutter dirty region management" ON)
 option(USE_GLES3 "Use OpenGL ES3 (default is OpenGL ES2)" OFF)
 option(ENABLE_EGL_ALPHA_COMPONENT_OF_COLOR_BUFFER "Enable alpha component of the EGL color buffer" ON)
 option(ENABLE_VSYNC "Enable embedder vsync" ON)
+option(ENABLE_EGL_ASYNC_BUFFER_SWAPPING "Do not sync to compositor redraw (eglSwapInterval 0)" OFF)
 option(BUILD_ELINUX_SO "Build .so file of elinux embedder" OFF)
 option(ENABLE_ELINUX_EMBEDDER_LOG "Enable logger of eLinux embedder" ON)
 option(FLUTTER_RELEASE "Build Flutter Engine with release mode" OFF)

diff --git a/cmake/build.cmake b/cmake/build.cmake
@@ -118,6 +118,13 @@ if(ENABLE_VSYNC)
  )
 endif()
 
+# Do not sync to compositor redraw (eglSwapInterval 0).
+if(ENABLE_EGL_ASYNC_BUFFER_SWAPPING)
+ add_definitions(
+ -DENABLE_EGL_ASYNC_BUFFER_SWAPPING
+ )
+endif()
+
 # Enable alpha component of the egl color buffer.
 if(ENABLE_EGL_ALPHA_COMPONENT_OF_COLOR_BUFFER)
  add_definitions(