Add method to sk_gpu_test::TestContext to automatically restore the previous context.

The motivation for this is to allow a GM to create a GL context, do some some work in it, and then return to the context that was set when it was invoked.

Change-Id: Ie8496072a10f8f3ff36a08889e593a6ca961b61a
Reviewed-on: https://skia-review.googlesource.com/70720
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/tools/gpu/TestContext.cpp b/tools/gpu/TestContext.cpp
index c80c4ea4df..f760cc7738 100644
--- a/tools/gpu/TestContext.cpp
+++ b/tools/gpu/TestContext.cpp
@@ -37,8 +37,15 @@ sk_sp<GrContext> TestContext::makeGrContext(const GrContextOptions&) {
 
 void TestContext::makeCurrent() const { this->onPlatformMakeCurrent(); }
 
+SkScopeExit TestContext::makeCurrentAndAutoRestore() const {
+    auto asr = SkScopeExit(this->onPlatformGetAutoContextRestore());
+    this->makeCurrent();
+    return asr;
+}
+
 void TestContext::swapBuffers() { this->onPlatformSwapBuffers(); }
 
+
 void TestContext::waitOnSyncOrSwap() {
     if (!fFenceSync) {
         // Fallback on the platform SwapBuffers method for synchronization. This may have no effect.