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Add a toggle to turn off vsync in Dawn

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This commit add a toggle to turn off vsync in Dawn.
When turn off vsync, choose vulkan present mode VK_PRESENT_MODE_IMMEDIATE_KHR
if the mode is available on the system, but if the mode isn't supported,
choose default mode VK_PRESENT_MODE_FIFO_KHR.

BUG=dawn:237

Change-Id: If400262b67cc8051422745e3bed737431183c0b6
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/12100
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Yizhou Jiang <yizhou.jiang@intel.com>
This commit is contained in:
Yizhou Jiang
2019-10-15 07:43:05 +00:00
committed by Commit Bot service account
parent b0cdf95213
commit 1093c4de2c
4 changed files with 48 additions and 4 deletions
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16
src/tests/unittests/validation/ToggleValidationTests.cpp
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@@ -75,4 +75,20 @@ TEST_F(ToggleValidationTest, OverrideToggleUsage) {
ASSERT_EQ(InvalidToggleExists, false);
}
}
TEST_F(ToggleValidationTest, TurnOffVsyncWithToggle) {
const char* kValidToggleName = "turn_off_vsync";
dawn_native::DeviceDescriptor descriptor;
descriptor.forceEnabledToggles.push_back(kValidToggleName);
DawnDevice deviceWithToggle = adapter.CreateDevice(&descriptor);
std::vector<const char*> toggleNames = dawn_native::GetTogglesUsed(deviceWithToggle);
bool validToggleExists = false;
for (const char* toggle : toggleNames) {
if (strcmp(toggle, kValidToggleName) == 0) {
validToggleExists = true;
}
}
ASSERT_EQ(validToggleExists, true);
}
} // anonymous namespace