void VulkanQueryPool::endOcclusionQuery(VulkanQuery* query, VulkanCmdBuffer* cb)
	{
		Lock(mMutex);

		VkCommandBuffer vkCmdBuf = cb->getHandle();
		vkCmdEndQuery(vkCmdBuf, query->mPool, query->mQueryIdx);
	}
Exemplo n.º 2
0
void PerfQuery::DisableQuery(PerfQueryGroup type)
{
  if (type == PQG_ZCOMP_ZCOMPLOC || type == PQG_ZCOMP)
  {
    // DisableQuery should be called for each EnableQuery, so subtract one to get the previous one.
    u32 index = (m_query_read_pos + m_query_count - 1) % PERF_QUERY_BUFFER_SIZE;
    vkCmdEndQuery(g_command_buffer_mgr->GetCurrentCommandBuffer(), m_query_pool, index);
  }
}
Exemplo n.º 3
0
void PerfQuery::DisableQuery(PerfQueryGroup type)
{
  if (type == PQG_ZCOMP_ZCOMPLOC || type == PQG_ZCOMP)
  {
    vkCmdEndQuery(g_command_buffer_mgr->GetCurrentCommandBuffer(), m_query_pool, m_query_next_pos);
    m_query_next_pos = (m_query_next_pos + 1) % PERF_QUERY_BUFFER_SIZE;
    m_query_count++;
  }
}
Exemplo n.º 4
0
void PerfQuery::DisableQuery(PerfQueryGroup type)
{
  if (type == PQG_ZCOMP_ZCOMPLOC || type == PQG_ZCOMP)
  {
    // DisableQuery should be called for each EnableQuery, so subtract one to get the previous one.
    u32 index = (m_query_read_pos + m_query_count - 1) % PERF_QUERY_BUFFER_SIZE;
    vkCmdEndQuery(g_command_buffer_mgr->GetCurrentCommandBuffer(), m_query_pool, index);
    StateTracker::GetInstance()->SetBackgroundCommandBufferExecution(true);
    DEBUG_LOG(VIDEO, "end query %u", index);
  }
}
Exemplo n.º 5
0
int main(int argc, char *argv[]) {
    VkResult U_ASSERT_ONLY res;
    bool U_ASSERT_ONLY pass;
    struct sample_info info = {};
    char sample_title[] = "Draw Cube";

    process_command_line_args(info, argc, argv);
    init_global_layer_properties(info);
    info.instance_extension_names.push_back(VK_KHR_SURFACE_EXTENSION_NAME);
#ifdef _WIN32
    info.instance_extension_names.push_back(
        VK_KHR_WIN32_SURFACE_EXTENSION_NAME);
#else
    info.instance_extension_names.push_back(VK_KHR_XCB_SURFACE_EXTENSION_NAME);
#endif
    info.device_extension_names.push_back(VK_KHR_SWAPCHAIN_EXTENSION_NAME);
    init_instance(info, sample_title);
    init_enumerate_device(info);
    init_window_size(info, 500, 500);
    init_connection(info);
    init_window(info);
    init_swapchain_extension(info);
    init_device(info);
    init_command_pool(info);
    init_command_buffer(info);
    execute_begin_command_buffer(info);
    init_device_queue(info);
    init_swap_chain(info);
    init_depth_buffer(info);
    init_uniform_buffer(info);
    init_descriptor_and_pipeline_layouts(info, false);
    init_renderpass(info, DEPTH_PRESENT);
    init_shaders(info, vertShaderText, fragShaderText);
    init_framebuffers(info, DEPTH_PRESENT);
    init_vertex_buffer(info, g_vb_solid_face_colors_Data,
                       sizeof(g_vb_solid_face_colors_Data),
                       sizeof(g_vb_solid_face_colors_Data[0]), false);
    init_descriptor_pool(info, false);
    init_descriptor_set(info, false);
    init_pipeline_cache(info);
    init_pipeline(info, DEPTH_PRESENT);

    /* VULKAN_KEY_START */

    VkClearValue clear_values[2];
    clear_values[0].color.float32[0] = 0.2f;
    clear_values[0].color.float32[1] = 0.2f;
    clear_values[0].color.float32[2] = 0.2f;
    clear_values[0].color.float32[3] = 0.2f;
    clear_values[1].depthStencil.depth = 1.0f;
    clear_values[1].depthStencil.stencil = 0;

    VkSemaphore presentCompleteSemaphore;
    VkSemaphoreCreateInfo presentCompleteSemaphoreCreateInfo;
    presentCompleteSemaphoreCreateInfo.sType =
        VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
    presentCompleteSemaphoreCreateInfo.pNext = NULL;
    presentCompleteSemaphoreCreateInfo.flags = VK_FENCE_CREATE_SIGNALED_BIT;

    res = vkCreateSemaphore(info.device, &presentCompleteSemaphoreCreateInfo,
                            NULL, &presentCompleteSemaphore);
    assert(res == VK_SUCCESS);

    // Get the index of the next available swapchain image:
    res = vkAcquireNextImageKHR(info.device, info.swap_chain, UINT64_MAX,
                                presentCompleteSemaphore, NULL,
                                &info.current_buffer);
    // TODO: Deal with the VK_SUBOPTIMAL_KHR and VK_ERROR_OUT_OF_DATE_KHR
    // return codes
    assert(res == VK_SUCCESS);

    /* Allocate a uniform buffer that will take query results. */
    VkBuffer query_result_buf;
    VkDeviceMemory query_result_mem;
    VkBufferCreateInfo buf_info = {};
    buf_info.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
    buf_info.pNext = NULL;
    buf_info.usage =
        VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT;
    buf_info.size = 4 * sizeof(uint64_t);
    buf_info.queueFamilyIndexCount = 0;
    buf_info.pQueueFamilyIndices = NULL;
    buf_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
    buf_info.flags = 0;
    res = vkCreateBuffer(info.device, &buf_info, NULL, &query_result_buf);
    assert(res == VK_SUCCESS);

    VkMemoryRequirements mem_reqs;
    vkGetBufferMemoryRequirements(info.device, query_result_buf, &mem_reqs);

    VkMemoryAllocateInfo alloc_info = {};
    alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
    alloc_info.pNext = NULL;
    alloc_info.memoryTypeIndex = 0;
    alloc_info.allocationSize = mem_reqs.size;
    pass = memory_type_from_properties(info, mem_reqs.memoryTypeBits,
                                       VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT,
                                       &alloc_info.memoryTypeIndex);
    assert(pass);

    res = vkAllocateMemory(info.device, &alloc_info, NULL, &query_result_mem);
    assert(res == VK_SUCCESS);

    res =
        vkBindBufferMemory(info.device, query_result_buf, query_result_mem, 0);
    assert(res == VK_SUCCESS);

    VkQueryPool query_pool;
    VkQueryPoolCreateInfo query_pool_info;
    query_pool_info.sType = VK_STRUCTURE_TYPE_QUERY_POOL_CREATE_INFO;
    query_pool_info.pNext = NULL;
    query_pool_info.queryType = VK_QUERY_TYPE_OCCLUSION;
    query_pool_info.flags = 0;
    query_pool_info.queryCount = 2;
    query_pool_info.pipelineStatistics = 0;

    res = vkCreateQueryPool(info.device, &query_pool_info, NULL, &query_pool);
    assert(res == VK_SUCCESS);

    vkCmdResetQueryPool(info.cmd, query_pool, 0 /*startQuery*/,
                        2 /*queryCount*/);

    VkRenderPassBeginInfo rp_begin;
    rp_begin.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
    rp_begin.pNext = NULL;
    rp_begin.renderPass = info.render_pass;
    rp_begin.framebuffer = info.framebuffers[info.current_buffer];
    rp_begin.renderArea.offset.x = 0;
    rp_begin.renderArea.offset.y = 0;
    rp_begin.renderArea.extent.width = info.width;
    rp_begin.renderArea.extent.height = info.height;
    rp_begin.clearValueCount = 2;
    rp_begin.pClearValues = clear_values;

    vkCmdBeginRenderPass(info.cmd, &rp_begin, VK_SUBPASS_CONTENTS_INLINE);

    vkCmdBindPipeline(info.cmd, VK_PIPELINE_BIND_POINT_GRAPHICS, info.pipeline);
    vkCmdBindDescriptorSets(info.cmd, VK_PIPELINE_BIND_POINT_GRAPHICS,
                            info.pipeline_layout, 0, NUM_DESCRIPTOR_SETS,
                            info.desc_set.data(), 0, NULL);

    const VkDeviceSize offsets[1] = {0};
    vkCmdBindVertexBuffers(info.cmd, 0, 1, &info.vertex_buffer.buf, offsets);

    VkViewport viewport;
    viewport.height = (float)info.height;
    viewport.width = (float)info.width;
    viewport.minDepth = (float)0.0f;
    viewport.maxDepth = (float)1.0f;
    viewport.x = 0;
    viewport.y = 0;
    vkCmdSetViewport(info.cmd, 0, NUM_VIEWPORTS, &viewport);

    VkRect2D scissor;
    scissor.extent.width = info.width;
    scissor.extent.height = info.height;
    scissor.offset.x = 0;
    scissor.offset.y = 0;
    vkCmdSetScissor(info.cmd, 0, NUM_SCISSORS, &scissor);

    vkCmdBeginQuery(info.cmd, query_pool, 0 /*slot*/, 0 /*flags*/);
    vkCmdEndQuery(info.cmd, query_pool, 0 /*slot*/);

    vkCmdBeginQuery(info.cmd, query_pool, 1 /*slot*/, 0 /*flags*/);

    vkCmdDraw(info.cmd, 12 * 3, 1, 0, 0);
    vkCmdEndRenderPass(info.cmd);

    vkCmdEndQuery(info.cmd, query_pool, 1 /*slot*/);

    vkCmdCopyQueryPoolResults(
        info.cmd, query_pool, 0 /*firstQuery*/, 2 /*queryCount*/,
        query_result_buf, 0 /*dstOffset*/, sizeof(uint64_t) /*stride*/,
        VK_QUERY_RESULT_64_BIT | VK_QUERY_RESULT_WAIT_BIT);

    VkImageMemoryBarrier prePresentBarrier = {};
    prePresentBarrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
    prePresentBarrier.pNext = NULL;
    prePresentBarrier.srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
    prePresentBarrier.dstAccessMask = 0;
    prePresentBarrier.oldLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
    prePresentBarrier.newLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
    prePresentBarrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
    prePresentBarrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
    prePresentBarrier.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
    prePresentBarrier.subresourceRange.baseMipLevel = 0;
    prePresentBarrier.subresourceRange.levelCount = 1;
    prePresentBarrier.subresourceRange.baseArrayLayer = 0;
    prePresentBarrier.subresourceRange.layerCount = 1;
    prePresentBarrier.image = info.buffers[info.current_buffer].image;
    vkCmdPipelineBarrier(info.cmd, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT,
                         VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, 0, 0, NULL, 0, NULL,
                         1, &prePresentBarrier);

    res = vkEndCommandBuffer(info.cmd);
    const VkCommandBuffer cmd_bufs[] = {info.cmd};
    VkFenceCreateInfo fenceInfo;
    VkFence drawFence;
    fenceInfo.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO;
    fenceInfo.pNext = NULL;
    fenceInfo.flags = 0;
    vkCreateFence(info.device, &fenceInfo, NULL, &drawFence);

    VkPipelineStageFlags pipe_stage_flags =
        VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT;
    VkSubmitInfo submit_info[1] = {};
    submit_info[0].pNext = NULL;
    submit_info[0].sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
    submit_info[0].waitSemaphoreCount = 1;
    submit_info[0].pWaitSemaphores = &presentCompleteSemaphore;
    submit_info[0].pWaitDstStageMask = &pipe_stage_flags;
    submit_info[0].commandBufferCount = 1;
    submit_info[0].pCommandBuffers = cmd_bufs;
    submit_info[0].signalSemaphoreCount = 0;
    submit_info[0].pSignalSemaphores = NULL;

    /* Queue the command buffer for execution */
    res = vkQueueSubmit(info.queue, 1, submit_info, drawFence);
    assert(res == VK_SUCCESS);

    res = vkQueueWaitIdle(info.queue);
    assert(res == VK_SUCCESS);

    uint64_t samples_passed[4];

    samples_passed[0] = 0;
    samples_passed[1] = 0;
    res = vkGetQueryPoolResults(
        info.device, query_pool, 0 /*firstQuery*/, 2 /*queryCount*/,
        sizeof(samples_passed) /*dataSize*/, samples_passed,
        sizeof(uint64_t) /*stride*/,
        VK_QUERY_RESULT_64_BIT | VK_QUERY_RESULT_WAIT_BIT);
    assert(res == VK_SUCCESS);

    std::cout << "vkGetQueryPoolResults data"
              << "\n";
    std::cout << "samples_passed[0] = " << samples_passed[0] << "\n";
    std::cout << "samples_passed[1] = " << samples_passed[1] << "\n";

    /* Read back query result from buffer */
    uint64_t *samples_passed_ptr;
    res = vkMapMemory(info.device, query_result_mem, 0, mem_reqs.size, 0,
                      (void **)&samples_passed_ptr);
    assert(res == VK_SUCCESS);

    std::cout << "vkCmdCopyQueryPoolResults data"
              << "\n";
    std::cout << "samples_passed[0] = " << samples_passed_ptr[0] << "\n";
    std::cout << "samples_passed[1] = " << samples_passed_ptr[1] << "\n";

    vkUnmapMemory(info.device, query_result_mem);

    /* Now present the image in the window */

    VkPresentInfoKHR present;
    present.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
    present.pNext = NULL;
    present.swapchainCount = 1;
    present.pSwapchains = &info.swap_chain;
    present.pImageIndices = &info.current_buffer;
    present.pWaitSemaphores = NULL;
    present.waitSemaphoreCount = 0;
    present.pResults = NULL;

    /* Make sure command buffer is finished before presenting */
    do {
        res =
            vkWaitForFences(info.device, 1, &drawFence, VK_TRUE, FENCE_TIMEOUT);
    } while (res == VK_TIMEOUT);

    assert(res == VK_SUCCESS);
    res = vkQueuePresentKHR(info.queue, &present);
    assert(res == VK_SUCCESS);

    wait_seconds(1);
    /* VULKAN_KEY_END */
    if (info.save_images)
        write_ppm(info, "occlusion_query");

    vkDestroyBuffer(info.device, query_result_buf, NULL);
    vkFreeMemory(info.device, query_result_mem, NULL);
    vkDestroySemaphore(info.device, presentCompleteSemaphore, NULL);
    vkDestroyQueryPool(info.device, query_pool, NULL);
    vkDestroyFence(info.device, drawFence, NULL);
    destroy_pipeline(info);
    destroy_pipeline_cache(info);
    destroy_descriptor_pool(info);
    destroy_vertex_buffer(info);
    destroy_framebuffers(info);
    destroy_shaders(info);
    destroy_renderpass(info);
    destroy_descriptor_and_pipeline_layouts(info);
    destroy_uniform_buffer(info);
    destroy_depth_buffer(info);
    destroy_swap_chain(info);
    destroy_command_buffer(info);
    destroy_command_pool(info);
    destroy_device(info);
    destroy_window(info);
    destroy_instance(info);
    return 0;
}
Exemplo n.º 6
0
	void buildCommandBuffers()
	{
		VkCommandBufferBeginInfo cmdBufInfo = vks::initializers::commandBufferBeginInfo();

		VkClearValue clearValues[2];
		clearValues[0].color = defaultClearColor;
		clearValues[1].depthStencil = { 1.0f, 0 };

		VkRenderPassBeginInfo renderPassBeginInfo = vks::initializers::renderPassBeginInfo();
		renderPassBeginInfo.renderPass = renderPass;
		renderPassBeginInfo.renderArea.offset.x = 0;
		renderPassBeginInfo.renderArea.offset.y = 0;
		renderPassBeginInfo.renderArea.extent.width = width;
		renderPassBeginInfo.renderArea.extent.height = height;
		renderPassBeginInfo.clearValueCount = 2;
		renderPassBeginInfo.pClearValues = clearValues;

		for (int32_t i = 0; i < drawCmdBuffers.size(); ++i) {
			renderPassBeginInfo.framebuffer = frameBuffers[i];

			VK_CHECK_RESULT(vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo));

			// Reset timestamp query pool
			vkCmdResetQueryPool(drawCmdBuffers[i], queryPool, 0, static_cast<uint32_t>(pipelineStats.size()));

			vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);

			VkViewport viewport = vks::initializers::viewport((float)width,	(float)height, 0.0f, 1.0f);
			vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);

			VkRect2D scissor = vks::initializers::rect2D(width, height, 0, 0);
			vkCmdSetScissor(drawCmdBuffers[i], 0, 1, &scissor);

			VkDeviceSize offsets[1] = { 0 };

			// Start capture of pipeline statistics
			vkCmdBeginQuery(drawCmdBuffers[i], queryPool, 0, VK_QUERY_CONTROL_PRECISE_BIT);

			vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline);
			vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSet, 0, NULL);
			vkCmdBindVertexBuffers(drawCmdBuffers[i], 0, 1, &models.objects[models.objectIndex].vertices.buffer, offsets);
			vkCmdBindIndexBuffer(drawCmdBuffers[i], models.objects[models.objectIndex].indices.buffer, 0, VK_INDEX_TYPE_UINT32);

			for (int32_t y = 0; y < gridSize; y++) {
				for (int32_t x = 0; x < gridSize; x++) {
					glm::vec3 pos = glm::vec3(float(x - (gridSize / 2.0f)) * 2.5f, 0.0f, float(y - (gridSize / 2.0f)) * 2.5f);
					vkCmdPushConstants(drawCmdBuffers[i], pipelineLayout, VK_SHADER_STAGE_VERTEX_BIT, 0, sizeof(glm::vec3), &pos);
					vkCmdDrawIndexed(drawCmdBuffers[i], models.objects[models.objectIndex].indexCount, 1, 0, 0, 0);
				}
			}

			// End capture of pipeline statistics
			vkCmdEndQuery(drawCmdBuffers[i], queryPool, 0);

			drawUI(drawCmdBuffers[i]);

			vkCmdEndRenderPass(drawCmdBuffers[i]);

			VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i]));
		}
	}
Exemplo n.º 7
0
	void buildCommandBuffers()
	{
		VkCommandBufferBeginInfo cmdBufInfo = vks::initializers::commandBufferBeginInfo();

		VkClearValue clearValues[2];
		clearValues[0].color = defaultClearColor;
		clearValues[1].depthStencil = { 1.0f, 0 };

		VkRenderPassBeginInfo renderPassBeginInfo = vks::initializers::renderPassBeginInfo();
		renderPassBeginInfo.renderPass = renderPass;
		renderPassBeginInfo.renderArea.offset.x = 0;
		renderPassBeginInfo.renderArea.offset.y = 0;
		renderPassBeginInfo.renderArea.extent.width = width;
		renderPassBeginInfo.renderArea.extent.height = height;
		renderPassBeginInfo.clearValueCount = 2;
		renderPassBeginInfo.pClearValues = clearValues;

		for (int32_t i = 0; i < drawCmdBuffers.size(); ++i)
		{
			renderPassBeginInfo.framebuffer = frameBuffers[i];

			VK_CHECK_RESULT(vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo));

			if (deviceFeatures.pipelineStatisticsQuery) {
				vkCmdResetQueryPool(drawCmdBuffers[i], queryPool, 0, 2);
			}

			vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);

			VkViewport viewport = vks::initializers::viewport((float)width, (float)height, 0.0f, 1.0f);
			vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);

			VkRect2D scissor = vks::initializers::rect2D(width, height, 0, 0);
			vkCmdSetScissor(drawCmdBuffers[i], 0, 1, &scissor);

			vkCmdSetLineWidth(drawCmdBuffers[i], 1.0f);

			VkDeviceSize offsets[1] = { 0 };

			// Skysphere
			vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.skysphere);
			vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayouts.skysphere, 0, 1, &descriptorSets.skysphere, 0, NULL);
			vkCmdBindVertexBuffers(drawCmdBuffers[i], VERTEX_BUFFER_BIND_ID, 1, &models.skysphere.vertices.buffer, offsets);
			vkCmdBindIndexBuffer(drawCmdBuffers[i], models.skysphere.indices.buffer, 0, VK_INDEX_TYPE_UINT32);
			vkCmdDrawIndexed(drawCmdBuffers[i], models.skysphere.indexCount, 1, 0, 0, 0);

			// Terrain
			if (deviceFeatures.pipelineStatisticsQuery) {
				// Begin pipeline statistics query		
				vkCmdBeginQuery(drawCmdBuffers[i], queryPool, 0, VK_QUERY_CONTROL_PRECISE_BIT);
			}
			// Render
			vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, wireframe ? pipelines.wireframe : pipelines.terrain);
			vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayouts.terrain, 0, 1, &descriptorSets.terrain, 0, NULL);
			vkCmdBindVertexBuffers(drawCmdBuffers[i], VERTEX_BUFFER_BIND_ID, 1, &models.terrain.vertices.buffer, offsets);
			vkCmdBindIndexBuffer(drawCmdBuffers[i], models.terrain.indices.buffer, 0, VK_INDEX_TYPE_UINT32);
			vkCmdDrawIndexed(drawCmdBuffers[i], models.terrain.indexCount, 1, 0, 0, 0);
			if (deviceFeatures.pipelineStatisticsQuery) {
				// End pipeline statistics query
				vkCmdEndQuery(drawCmdBuffers[i], queryPool, 0);
			}

			drawUI(drawCmdBuffers[i]);

			vkCmdEndRenderPass(drawCmdBuffers[i]);

			VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i]));
		}
	}
Exemplo n.º 8
0
	void buildCommandBuffers()
	{
		VkCommandBufferBeginInfo cmdBufInfo = vkTools::initializers::commandBufferBeginInfo();

		VkClearValue clearValues[2];
		clearValues[0].color = defaultClearColor;
		clearValues[1].depthStencil = { 1.0f, 0 };

		VkRenderPassBeginInfo renderPassBeginInfo = vkTools::initializers::renderPassBeginInfo();
		renderPassBeginInfo.renderPass = renderPass;
		renderPassBeginInfo.renderArea.offset.x = 0;
		renderPassBeginInfo.renderArea.offset.y = 0;
		renderPassBeginInfo.renderArea.extent.width = width;
		renderPassBeginInfo.renderArea.extent.height = height;
		renderPassBeginInfo.clearValueCount = 2;
		renderPassBeginInfo.pClearValues = clearValues;

		VkResult err;

		for (int32_t i = 0; i < drawCmdBuffers.size(); ++i)
		{
			// Set target frame buffer
			renderPassBeginInfo.framebuffer = frameBuffers[i];

			err = vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo);
			assert(!err);

			// Reset query pool
			// Must be done outside of render pass
			vkCmdResetQueryPool(drawCmdBuffers[i], queryPool, 0, 2);

			vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);

			VkViewport viewport = vkTools::initializers::viewport(
				(float)width,
				(float)height,
				0.0f,
				1.0f);
			vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);

			VkRect2D scissor = vkTools::initializers::rect2D(
				width,
				height,
				0,
				0);
			vkCmdSetScissor(drawCmdBuffers[i], 0, 1, &scissor);

			VkDeviceSize offsets[1] = { 0 };

			glm::mat4 modelMatrix = glm::mat4();

			// Occlusion pass
			vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.simple);

			// Occluder first
			vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSet, 0, NULL);
			vkCmdBindVertexBuffers(drawCmdBuffers[i], VERTEX_BUFFER_BIND_ID, 1, &meshes.plane.vertices.buf, offsets);
			vkCmdBindIndexBuffer(drawCmdBuffers[i], meshes.plane.indices.buf, 0, VK_INDEX_TYPE_UINT32);
			vkCmdDrawIndexed(drawCmdBuffers[i], meshes.plane.indexCount, 1, 0, 0, 0);

			// Teapot
			vkCmdBeginQuery(drawCmdBuffers[i], queryPool, 0, VK_FLAGS_NONE);

			vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSets.teapot, 0, NULL);
			vkCmdBindVertexBuffers(drawCmdBuffers[i], VERTEX_BUFFER_BIND_ID, 1, &meshes.teapot.vertices.buf, offsets);
			vkCmdBindIndexBuffer(drawCmdBuffers[i], meshes.teapot.indices.buf, 0, VK_INDEX_TYPE_UINT32);
			vkCmdDrawIndexed(drawCmdBuffers[i], meshes.teapot.indexCount, 1, 0, 0, 0);

			vkCmdEndQuery(drawCmdBuffers[i], queryPool, 0);

			// Sphere
			vkCmdBeginQuery(drawCmdBuffers[i], queryPool, 1, VK_FLAGS_NONE);

			vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSets.sphere, 0, NULL);
			vkCmdBindVertexBuffers(drawCmdBuffers[i], VERTEX_BUFFER_BIND_ID, 1, &meshes.sphere.vertices.buf, offsets);
			vkCmdBindIndexBuffer(drawCmdBuffers[i], meshes.sphere.indices.buf, 0, VK_INDEX_TYPE_UINT32);
			vkCmdDrawIndexed(drawCmdBuffers[i], meshes.sphere.indexCount, 1, 0, 0, 0);

			vkCmdEndQuery(drawCmdBuffers[i], queryPool, 1);

			// Query results
			vkCmdCopyQueryPoolResults(
				drawCmdBuffers[i], 
				queryPool,
				0,
				2,
				queryResult.buffer,
				0,
				sizeof(uint64_t),
				VK_QUERY_RESULT_64_BIT | VK_QUERY_RESULT_WAIT_BIT);

			// Visible pass
			// Clear color and depth attachments
			VkClearAttachment clearAttachments[2] = {};

			clearAttachments[0].aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
			clearAttachments[0].clearValue.color = defaultClearColor;
			clearAttachments[0].colorAttachment = 0;

			clearAttachments[1].aspectMask = VK_IMAGE_ASPECT_DEPTH_BIT;
			clearAttachments[1].clearValue.depthStencil = { 1.0f, 0 };

			VkClearRect clearRect = {};
			clearRect.layerCount = 1;
			clearRect.rect.offset = { 0, 0 };
			clearRect.rect.extent = { width, height };

			vkCmdClearAttachments(
				drawCmdBuffers[i],
				2,
				clearAttachments,
				1,
				&clearRect);

			vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.solid);

			// Teapot
			vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSets.teapot, 0, NULL);
			vkCmdBindVertexBuffers(drawCmdBuffers[i], VERTEX_BUFFER_BIND_ID, 1, &meshes.teapot.vertices.buf, offsets);
			vkCmdBindIndexBuffer(drawCmdBuffers[i], meshes.teapot.indices.buf, 0, VK_INDEX_TYPE_UINT32);
			vkCmdDrawIndexed(drawCmdBuffers[i], meshes.teapot.indexCount, 1, 0, 0, 0);

			// Sphere
			vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSets.sphere, 0, NULL);
			vkCmdBindVertexBuffers(drawCmdBuffers[i], VERTEX_BUFFER_BIND_ID, 1, &meshes.sphere.vertices.buf, offsets);
			vkCmdBindIndexBuffer(drawCmdBuffers[i], meshes.sphere.indices.buf, 0, VK_INDEX_TYPE_UINT32);
			vkCmdDrawIndexed(drawCmdBuffers[i], meshes.sphere.indexCount, 1, 0, 0, 0);

			// Occluder
			vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.occluder);
			vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSet, 0, NULL);
			vkCmdBindVertexBuffers(drawCmdBuffers[i], VERTEX_BUFFER_BIND_ID, 1, &meshes.plane.vertices.buf, offsets);
			vkCmdBindIndexBuffer(drawCmdBuffers[i], meshes.plane.indices.buf, 0, VK_INDEX_TYPE_UINT32);
			vkCmdDrawIndexed(drawCmdBuffers[i], meshes.plane.indexCount, 1, 0, 0, 0);

			vkCmdEndRenderPass(drawCmdBuffers[i]);

			VkImageMemoryBarrier prePresentBarrier = vkTools::prePresentBarrier(swapChain.buffers[i].image);
			vkCmdPipelineBarrier(
				drawCmdBuffers[i],
				VK_PIPELINE_STAGE_ALL_COMMANDS_BIT,
				VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT,
				VK_FLAGS_NONE,
				0, nullptr,
				0, nullptr,
				1, &prePresentBarrier);

			err = vkEndCommandBuffer(drawCmdBuffers[i]);
			assert(!err);
		}
	}