Use wait and signal semaphores, renamed main for android triangle example

android/triangle/triangle.NativeActivity/triangle.NativeActivity.vcxproj

@@ -149,7 +149,7 @@
       <CompileAs>CompileAsCpp</CompileAs>
       <PreprocessorDefinitions>VK_NO_PROTOTYPES;VK_USE_PLATFORM_ANDROID_KHR;__STDINT_LIMITS</PreprocessorDefinitions>
       <CppLanguageStandard>c++11</CppLanguageStandard>
-      <AdditionalIncludeDirectories>../../../external;../../../base;../../../external/glm;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>../../../external;../../../base;../../../external/glm;../../base;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <LibraryDependencies>%(LibraryDependencies);GLESv1_CM;EGL;</LibraryDependencies>
@@ -215,7 +215,7 @@
     <ClCompile Include="..\..\..\base\vulkanandroid.cpp" />
     <ClCompile Include="..\..\..\base\vulkantools.cpp" />
     <ClCompile Include="android_native_app_glue.c" />
-    <ClCompile Include="main.cpp" />
+    <ClCompile Include="triangle.cpp" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">

android/triangle/triangle.NativeActivity/triangle.NativeActivity.vcxproj.filters

@@ -7,8 +7,8 @@
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="android_native_app_glue.c" />
-    <ClCompile Include="main.cpp" />
     <ClCompile Include="..\..\..\base\vulkanandroid.cpp" />
     <ClCompile Include="..\..\..\base\vulkantools.cpp" />
+    <ClCompile Include="triangle.cpp" />
   </ItemGroup>
 </Project>

android/triangle/triangle.NativeActivity/triangle.cpp

@@ -17,7 +17,7 @@
 #include <android/asset_manager.h>
 
 #define GLM_FORCE_RADIANS
-#define GLM_DEPTH_ZERO_TO_ONE
+#define GLM_FORCE_DEPTH_ZERO_TO_ONE
 #include "glm/glm.hpp"
 #include "glm/gtc/matrix_transform.hpp"
 
@@ -59,6 +59,11 @@ struct VulkanExample
 	VkPhysicalDeviceMemoryProperties deviceMemoryProperties;
 	std::vector<VkShaderModule> shaderModules;
 
+	struct {
+		VkSemaphore presentComplete;
+		VkSemaphore submitSignal;
+	} semaphores;
+
 	struct {
 		VkBuffer buf;
 		VkDeviceMemory mem;
@@ -251,6 +256,15 @@ struct VulkanExample
 		VkResult err = vkCreatePipelineCache(device, &pipelineCacheCreateInfo, nullptr, &pipelineCache);
 		assert(!err);
 
+		// Create semaphores for synchronization
+		VkSemaphoreCreateInfo semaphoreCreateInfo = {};
+		semaphoreCreateInfo.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
+
+		err = vkCreateSemaphore(device, &semaphoreCreateInfo, nullptr, &semaphores.presentComplete);
+		assert(!err);
+		err = vkCreateSemaphore(device, &semaphoreCreateInfo, nullptr, &semaphores.submitSignal);
+		assert(!err);
+
 		createSetupCommandBuffer();
 		startSetupCommandBuffer();
 
@@ -318,6 +332,9 @@ struct VulkanExample
 		vkDestroyImage(device, depthStencil.image, nullptr);
 		vkFreeMemory(device, depthStencil.mem, nullptr);
 
+		vkDestroySemaphore(device, semaphores.presentComplete, nullptr);
+		vkDestroySemaphore(device, semaphores.submitSignal, nullptr);
+
 		vkDestroyPipelineCache(device, pipelineCache, nullptr);
 		vkDestroyDevice(device, nullptr);
 		vkDestroyInstance(instance, nullptr);
@@ -983,27 +1000,24 @@ struct VulkanExample
 	void draw()
 	{
 		VkResult err;
-		VkSemaphore presentCompleteSemaphore;
-		VkSemaphoreCreateInfo presentCompleteSemaphoreCreateInfo = {};
-		presentCompleteSemaphoreCreateInfo.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
-		presentCompleteSemaphoreCreateInfo.pNext = NULL;
-
-		err = vkCreateSemaphore(device, &presentCompleteSemaphoreCreateInfo, nullptr, &presentCompleteSemaphore);
-		assert(!err);
 
 		// Get next image in the swap chain (back/front buffer)
-		err = swapChain.acquireNextImage(presentCompleteSemaphore, &currentBuffer);
+		err = swapChain.acquireNextImage(semaphores.presentComplete, &currentBuffer);
 		assert(!err);
 
 		// The submit infor strcuture contains a list of
 		// command buffers and semaphores to be submitted to a queue
 		// If you want to submit multiple command buffers, pass an array
+		VkPipelineStageFlags pipelineStages = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT;
 		VkSubmitInfo submitInfo = {};
 		submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
 		submitInfo.waitSemaphoreCount = 1;
-		submitInfo.pWaitSemaphores = &presentCompleteSemaphore;
+		submitInfo.pWaitSemaphores = &semaphores.presentComplete;
 		submitInfo.commandBufferCount = 1;
 		submitInfo.pCommandBuffers = &drawCmdBuffers[currentBuffer];
+		submitInfo.pWaitDstStageMask = &pipelineStages;
+		submitInfo.signalSemaphoreCount = 1;
+		submitInfo.pSignalSemaphores = &semaphores.submitSignal;
 
 		// Submit to the graphics queue
 		err = vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE);
@@ -1011,11 +1025,9 @@ struct VulkanExample
 
 		// Present the current buffer to the swap chain
 		// This will display the image
-		err = swapChain.queuePresent(queue, currentBuffer);
+		err = swapChain.queuePresent(queue, currentBuffer, semaphores.submitSignal);
 		assert(!err);
 
-		vkDestroySemaphore(device, presentCompleteSemaphore, nullptr);
-
 		// Add a post present image memory barrier
 		// This will transform the frame buffer color attachment back
 		// to it's initial layout after it has been presented to the