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Transform swap chain image from undefined instead of present (refs #156)

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saschawillems 2016-06-21 22:17:05 +02:00
parent 037804f3b9
commit 2aefecfb9a
1 changed files with 8 additions and 10 deletions
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16
triangle/triangle.cpp
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@ -299,16 +299,14 @@ public:
// Get next image in the swap chain (back/front buffer) // Get next image in the swap chain (back/front buffer)
VK_CHECK_RESULT(swapChain.acquireNextImage(semaphores.presentComplete, &currentBuffer)); VK_CHECK_RESULT(swapChain.acquireNextImage(semaphores.presentComplete, &currentBuffer));
// Add a post present image memory barrier // Insert a post present image barrier to transform the image back to a
// This will transform the frame buffer color attachment back // color attachment that our render pass can write to
// to it's initial layout after it has been presented to the // We always use undefined image layout as the source as it doesn't actually matter
// windowing system // what is done with the previous image contents
VkImageMemoryBarrier postPresentBarrier = {}; VkImageMemoryBarrier postPresentBarrier = vkTools::initializers::imageMemoryBarrier();
postPresentBarrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
postPresentBarrier.pNext = NULL;
postPresentBarrier.srcAccessMask = 0; postPresentBarrier.srcAccessMask = 0;
postPresentBarrier.dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT; postPresentBarrier.dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
postPresentBarrier.oldLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR; postPresentBarrier.oldLayout = VK_IMAGE_LAYOUT_UNDEFINED;
postPresentBarrier.newLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL; postPresentBarrier.newLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
postPresentBarrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; postPresentBarrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
postPresentBarrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; postPresentBarrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
@ -325,7 +323,7 @@ public:
vkCmdPipelineBarrier( vkCmdPipelineBarrier(
postPresentCmdBuffer, postPresentCmdBuffer,
VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT,
VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT,
VK_FLAGS_NONE, VK_FLAGS_NONE,
0, nullptr, 0, nullptr,
0, nullptr, 0, nullptr,