src/main.cpp: render out the presentation queueHEADmaster

The freaking Triangle works now !!!

Signed-off-by: Edward O'Callaghan <funfunctor@folklore1984.net>

1 files changed, 37 insertions, 1 deletions

diff --git a/src/main.cpp b/src/main.cpp
index b62fd6c..1166cfd 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -612,7 +612,43 @@ private:
     }
 
     void drawFrame() {
-	    // XXX workout syncronization
+	    uint32_t imageIndex;
+	    vkAcquireNextImageKHR(device, swapChain, std::numeric_limits<uint64_t>::max(),
+			    imageAvailableSemaphore, VK_NULL_HANDLE, &imageIndex);
+
+	    VkSubmitInfo submitInfo = {};
+	    submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
+
+	    VkSemaphore waitSemaphores[] = {imageAvailableSemaphore};
+	    VkPipelineStageFlags waitStages[] = {VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT};
+
+	    submitInfo.waitSemaphoreCount = 1;
+	    submitInfo.pWaitSemaphores = waitSemaphores;
+	    submitInfo.pWaitDstStageMask = waitStages;
+
+	    submitInfo.commandBufferCount = 1;
+	    submitInfo.pCommandBuffers = &commandBuffers[imageIndex];
+
+	    VkSemaphore signalSemaphores[] = {renderFinishedSemaphore};
+	    submitInfo.signalSemaphoreCount = 1;
+	    submitInfo.pSignalSemaphores = signalSemaphores;
+
+	    if (vkQueueSubmit(graphicsQueue, 1, &submitInfo, VK_NULL_HANDLE) != VK_SUCCESS)
+		    throw std::runtime_error("failed to submit draw command buffer!");
+
+	    VkPresentInfoKHR presentInfo = {};
+	    presentInfo.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
+
+	    presentInfo.waitSemaphoreCount = 1;
+	    presentInfo.pWaitSemaphores = signalSemaphores;
+
+	    VkSwapchainKHR swapChains[] = {swapChain};
+	    presentInfo.swapchainCount =1;
+	    presentInfo.pSwapchains = swapChains;
+
+	    presentInfo.pImageIndices = &imageIndex;
+
+	    vkQueuePresentKHR(presentQueue, &presentInfo);
     }
 
     void createInstance() {