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Fixed problem with synchronization of uniform data updates.

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This commit is contained in:
Pawel Lapinski 2018-04-13 11:40:59 +02:00
parent bfb4b7607a
commit 4a1e77a3d0
1 changed files with 22 additions and 6 deletions
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28
examples/raytracing/raytracing.cpp
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@ -283,6 +283,22 @@ public:
VK_CHECK_RESULT(vkBeginCommandBuffer(compute.commandBuffer, &cmdBufInfo)); VK_CHECK_RESULT(vkBeginCommandBuffer(compute.commandBuffer, &cmdBufInfo));
VkBufferMemoryBarrier bufferMemoryBarrier = {};
bufferMemoryBarrier.sType = VK_STRUCTURE_TYPE_BUFFER_MEMORY_BARRIER;
bufferMemoryBarrier.srcAccessMask = VK_ACCESS_HOST_WRITE_BIT;
bufferMemoryBarrier.dstAccessMask = VK_ACCESS_UNIFORM_READ_BIT;
bufferMemoryBarrier.buffer = compute.uniformBuffer.buffer;
bufferMemoryBarrier.offset = 0;
bufferMemoryBarrier.size = VK_WHOLE_SIZE;
vkCmdPipelineBarrier(
compute.commandBuffer,
VK_PIPELINE_STAGE_HOST_BIT,
VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT,
VK_FLAGS_NONE,
0, nullptr,
1, &bufferMemoryBarrier,
0, nullptr );
vkCmdBindPipeline(compute.commandBuffer, VK_PIPELINE_BIND_POINT_COMPUTE, compute.pipeline); vkCmdBindPipeline(compute.commandBuffer, VK_PIPELINE_BIND_POINT_COMPUTE, compute.pipeline);
vkCmdBindDescriptorSets(compute.commandBuffer, VK_PIPELINE_BIND_POINT_COMPUTE, compute.pipelineLayout, 0, 1, &compute.descriptorSet, 0, 0); vkCmdBindDescriptorSets(compute.commandBuffer, VK_PIPELINE_BIND_POINT_COMPUTE, compute.pipelineLayout, 0, 1, &compute.descriptorSet, 0, 0);
@ -685,6 +701,12 @@ public:
void draw() void draw()
{ {
VkSubmitInfo computeSubmitInfo = vks::initializers::submitInfo();
computeSubmitInfo.commandBufferCount = 1;
computeSubmitInfo.pCommandBuffers = &compute.commandBuffer;
VK_CHECK_RESULT( vkQueueSubmit( compute.queue, 1, &computeSubmitInfo, compute.fence ) );
VulkanExampleBase::prepareFrame(); VulkanExampleBase::prepareFrame();
// Command buffer to be sumitted to the queue // Command buffer to be sumitted to the queue
@ -698,12 +720,6 @@ public:
// Use a fence to ensure that compute command buffer has finished executing before using it again // Use a fence to ensure that compute command buffer has finished executing before using it again
vkWaitForFences(device, 1, &compute.fence, VK_TRUE, UINT64_MAX); vkWaitForFences(device, 1, &compute.fence, VK_TRUE, UINT64_MAX);
vkResetFences(device, 1, &compute.fence); vkResetFences(device, 1, &compute.fence);
VkSubmitInfo computeSubmitInfo = vks::initializers::submitInfo();
computeSubmitInfo.commandBufferCount = 1;
computeSubmitInfo.pCommandBuffers = &compute.commandBuffer;
VK_CHECK_RESULT(vkQueueSubmit(compute.queue, 1, &computeSubmitInfo, compute.fence));
} }
void prepare() void prepare()