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Add support for rendering for the headless extension

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This commit is contained in:
Per Inge Mathisen 2021-04-27 13:52:27 +02:00
parent a2a604be47
commit 45ba247b55
6 changed files with 68 additions and 5 deletions
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44
base/vulkanexamplebase.cpp
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@ -51,6 +51,8 @@ VkResult VulkanExampleBase::createInstance(bool enableValidation)
instanceExtensions.push_back(VK_MVK_IOS_SURFACE_EXTENSION_NAME);
#elif defined(VK_USE_PLATFORM_MACOS_MVK)
instanceExtensions.push_back(VK_MVK_MACOS_SURFACE_EXTENSION_NAME);
#elif defined(VK_USE_PLATFORM_HEADLESS_EXT)
instanceExtensions.push_back(VK_EXT_HEADLESS_SURFACE_EXTENSION_NAME);
#endif
// Get extensions supported by the instance and store for later use
@ -584,6 +586,40 @@ void VulkanExampleBase::renderLoop()
}
updateOverlay();
}
#elif defined(VK_USE_PLATFORM_HEADLESS_EXT)
while (!quit)
{
auto tStart = std::chrono::high_resolution_clock::now();
if (viewUpdated)
{
viewUpdated = false;
viewChanged();
}
render();
frameCounter++;
auto tEnd = std::chrono::high_resolution_clock::now();
auto tDiff = std::chrono::duration<double, std::milli>(tEnd - tStart).count();
frameTimer = tDiff / 1000.0f;
camera.update(frameTimer);
if (camera.moving())
{
viewUpdated = true;
}
// Convert to clamped timer value
timer += timerSpeed * frameTimer;
if (timer > 1.0)
{
timer -= 1.0f;
}
float fpsTimer = std::chrono::duration<double, std::milli>(tEnd - lastTimestamp).count();
if (fpsTimer > 1000.0f)
{
lastFPS = (float)frameCounter * (1000.0f / fpsTimer);
frameCounter = 0;
lastTimestamp = tEnd;
}
updateOverlay();
}
#elif (defined(VK_USE_PLATFORM_MACOS_MVK) && defined(VK_EXAMPLE_XCODE_GENERATED))
[NSApp run];
#endif
@ -2425,6 +2461,10 @@ void VulkanExampleBase::handleEvent(const xcb_generic_event_t *event)
break;
}
}
#else
void VulkanExampleBase::setupWindow()
{
}
#endif
void VulkanExampleBase::viewChanged() {}
@ -2690,14 +2730,14 @@ void VulkanExampleBase::initSwapchain()
swapChain.initSurface(androidApp->window);
#elif (defined(VK_USE_PLATFORM_IOS_MVK) || defined(VK_USE_PLATFORM_MACOS_MVK))
swapChain.initSurface(view);
#elif defined(_DIRECT2DISPLAY)
swapChain.initSurface(width, height);
#elif defined(VK_USE_PLATFORM_DIRECTFB_EXT)
swapChain.initSurface(dfb, surface);
#elif defined(VK_USE_PLATFORM_WAYLAND_KHR)
swapChain.initSurface(display, surface);
#elif defined(VK_USE_PLATFORM_XCB_KHR)
swapChain.initSurface(connection, window);
#elif (defined(_DIRECT2DISPLAY) || defined(VK_USE_PLATFORM_HEADLESS_EXT))
swapChain.initSurface(width, height);
#endif
}