-
Fixes regressions in Android CtsVerifier.apk on Intel Chrome OS devices due to incorrect error handling in eglMakeCurrent. See below on how to confirm the regression is fixed. This partially reverts commit 23c86c74 Author: Chad Versace <chadversary@chromium.org> Subject: egl: Emit error when EGLSurface is lost The problem with commit 23c86c74 is that, once an EGLSurface became lost, the app could never unbind the bad surface. Each attempt to unbind the bad surface with eglMakeCurrent failed with EGL_BAD_CURRENT_SURFACE. Specificaly, the bad commit added the error handling below. #2 and #3 were right, but #1 was wrong. 1. eglMakeCurrent emits EGL_BAD_CURRENT_SURFACE if the calling thread has unflushed commands and either previous surface is no longer valid. 2. eglMakeCurrent emits EGL_BAD_NATIVE_WINDOW if either new surface is no longer valid. 3. eglSwapBuffers emits EGL_BAD_NATIVE_WINDOW if the swapped surface is no longer valid. Whe I wrote the bad commit, I misunderstood the EGL spec language for #1. The correct behavior is, if I understand correctly now, is below. This patch doesn't implement the correct behavior, though, it just reverts the broken behavior. - Assume a bound EGLSurface is no longer valid. - Assume the bound EGLContext has unflushed commands. - The app calls eglMakeCurrent. The spec requires eglMakeCurrent to implicitly flush. After flushing, eglMakeCurrent emits EGL_BAD_CURRENT_SURFACE and does *not* alter the thread's current bindings. - If the app calls eglMakeCurrent again, and the app inserts no commands into the GL command stream between the two eglMakeCurrent calls, then this second eglMakeCurrent succeeds without emitting an error. How to confirm this fixes the regression: Download android-cts-verifier-7.1_r5-linux_x86-x86.zip from source.android.com, unpack, and `adb install CtsVerifier.apk`. Run test "Projection Cube". Click the Pass button (a green checkmark). Then run test "Projection Widget". Confirm that widgets are visible and that logcat does not complain about eglMakeCurrent failure. Then confirm there are no regressions in the cts-traded module that commit 263243b1 fixed: cts-tf > run cts --skip-preconditions --skip-device-info \ -m CtsCameraTestCases \ -t android.hardware.camera2.cts.RobustnessTest Tested with Chrome OS board "reef". Fixes: 23c86c74 (egl: Emit error when EGLSurface is lost) Acked-by: Tapani Pälli <tapani.palli@intel.com> Cc: "17.1" <mesa-stable@lists.freedesktop.org> Cc: Tomasz Figa <tfiga@chromium.org> Cc: Nicolas Boichat <drinkcat@chromium.org> Cc: Emil Velikov <emil.velikov@collabora.com> (cherry picked from commit 8f62d21b)
b6ad01c7