4 files changed, 4 insertions, 6 deletions
diff --git a/tools/sk_app/ios/GLWindowContext_ios.cpp b/tools/sk_app/ios/GLWindowContext_ios.cpp
index f4c0d6b3c0..2a57b33e30 100644
--- a/tools/sk_app/ios/GLWindowContext_ios.cpp
+++ b/tools/sk_app/ios/GLWindowContext_ios.cpp
@@ -67,6 +67,7 @@ sk_sp<const GrGLInterface> GLWindowContext_ios::onInitializeContext() {
 
         SDL_GL_GetAttribute(SDL_GL_STENCIL_SIZE, &fStencilBits);
         SDL_GL_GetAttribute(SDL_GL_MULTISAMPLESAMPLES, &fSampleCount);
+        fSampleCount = SkTMax(fSampleCount, 1);
 
         SDL_GL_GetDrawableSize(fWindow, &fWidth, &fHeight);
         glViewport(0, 0, fWidth, fHeight);
diff --git a/tools/sk_app/ios/RasterWindowContext_ios.cpp b/tools/sk_app/ios/RasterWindowContext_ios.cpp
index cae5774c28..53d7c1a372 100644
--- a/tools/sk_app/ios/RasterWindowContext_ios.cpp
+++ b/tools/sk_app/ios/RasterWindowContext_ios.cpp
@@ -79,6 +79,7 @@ sk_sp<const GrGLInterface> RasterWindowContext_ios::onInitializeContext() {
 
         SDL_GL_GetAttribute(SDL_GL_STENCIL_SIZE, &fStencilBits);
         SDL_GL_GetAttribute(SDL_GL_MULTISAMPLESAMPLES, &fSampleCount);
+        fSampleCount = SkTMax(fSampleCount, 1);
 
         SDL_GL_GetDrawableSize(fWindow, &fWidth, &fHeight);
         glViewport(0, 0, fWidth, fHeight);
diff --git a/tools/sk_app/ios/Window_ios.cpp b/tools/sk_app/ios/Window_ios.cpp
index c1bdeae5fc..ac0ad0caa0 100644
--- a/tools/sk_app/ios/Window_ios.cpp
+++ b/tools/sk_app/ios/Window_ios.cpp
@@ -49,7 +49,7 @@ bool Window_ios::initWindow() {
 
     SDL_GL_SetAttribute(SDL_GL_ACCELERATED_VISUAL, 1);
 
-    if (fRequestedDisplayParams.fMSAASampleCount > 0) {
+    if (fRequestedDisplayParams.fMSAASampleCount > 1) {
         SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 1);
         SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, fRequestedDisplayParams.fMSAASampleCount);
     } else {
diff --git a/tools/sk_app/ios/Window_ios.h b/tools/sk_app/ios/Window_ios.h
index 667fa74e82..a0fed90697 100644
--- a/tools/sk_app/ios/Window_ios.h
+++ b/tools/sk_app/ios/Window_ios.h
@@ -18,11 +18,7 @@ namespace sk_app {
 
 class Window_ios : public Window {
 public:
-    Window_ios()
-        : INHERITED()
-        , fWindow(nullptr)
-        , fWindowID(0)
-        , fMSAASampleCount(0) {}
+    Window_ios() : INHERITED(), fWindow(nullptr), fWindowID(0), fMSAASampleCount(1) {}
     ~Window_ios() override { this->closeWindow(); }
 
     bool initWindow();