diff --git a/opengl/libs/EGL/eglApi.cpp b/opengl/libs/EGL/eglApi.cpp index a1bd82dff..8bfa16d06 100644 --- a/opengl/libs/EGL/eglApi.cpp +++ b/opengl/libs/EGL/eglApi.cpp @@ -30,6 +30,7 @@ #include #include +#include #include #include @@ -732,6 +733,17 @@ EGLBoolean eglSwapBuffers(EGLDisplay dpy, EGLSurface draw) #endif egl_surface_t const * const s = get_surface(draw); + + if (CC_UNLIKELY(dp->finishOnSwap)) { + uint32_t pixel; + egl_context_t * const c = get_context( egl_tls_t::getContext() ); + if (c) { + // glReadPixels() ensures that the frame is complete + s->cnx->hooks[c->version]->gl.glReadPixels(0,0,1,1, + GL_RGBA,GL_UNSIGNED_BYTE,&pixel); + } + } + return s->cnx->egl.eglSwapBuffers(dp->disp.dpy, s->surface); } diff --git a/opengl/libs/EGL/egl_display.cpp b/opengl/libs/EGL/egl_display.cpp index f1e493d1b..b80afd6c4 100644 --- a/opengl/libs/EGL/egl_display.cpp +++ b/opengl/libs/EGL/egl_display.cpp @@ -22,6 +22,7 @@ #include "egl_tls.h" #include "egl_impl.h" #include "Loader.h" +#include // ---------------------------------------------------------------------------- namespace android { @@ -66,7 +67,7 @@ extern void setGLHooksThreadSpecific(gl_hooks_t const *value); egl_display_t egl_display_t::sDisplay[NUM_DISPLAYS]; egl_display_t::egl_display_t() : - magic('_dpy'), refs(0) { + magic('_dpy'), finishOnSwap(false), refs(0) { } egl_display_t::~egl_display_t() { @@ -232,6 +233,12 @@ EGLBoolean egl_display_t::initialize(EGLint *major, EGLint *minor) { egl_cache_t::get()->initialize(this); + char value[PROPERTY_VALUE_MAX]; + property_get("debug.egl.finish", value, "0"); + if (atoi(value)) { + finishOnSwap = true; + } + refs++; if (major != NULL) *major = VERSION_MAJOR; diff --git a/opengl/libs/EGL/egl_display.h b/opengl/libs/EGL/egl_display.h index 63482284f..43738eac5 100644 --- a/opengl/libs/EGL/egl_display.h +++ b/opengl/libs/EGL/egl_display.h @@ -107,6 +107,7 @@ private: public: DisplayImpl disp; + bool finishOnSwap; private: uint32_t refs;