Method build_command_buffers

samples/api/hdr/hdr.cpp:77–225

}

void HDR::build_command_buffers()
{
	VkCommandBufferBeginInfo command_buffer_begin_info = vkb::initializers::command_buffer_begin_info();

	VkClearValue clear_values[2];
	clear_values[0].color        = {{0.0f, 0.0f, 0.0f, 0.0f}};
	clear_values[1].depthStencil = {0.0f, 0};

	VkRenderPassBeginInfo render_pass_begin_info = vkb::initializers::render_pass_begin_info();
	render_pass_begin_info.renderPass            = render_pass;
	render_pass_begin_info.renderArea.offset.x   = 0;
	render_pass_begin_info.renderArea.offset.y   = 0;
	render_pass_begin_info.clearValueCount       = 2;
	render_pass_begin_info.pClearValues          = clear_values;

	for (int32_t i = 0; i < draw_cmd_buffers.size(); ++i)
	{
		VK_CHECK(vkBeginCommandBuffer(draw_cmd_buffers[i], &command_buffer_begin_info));

		{
			/*
			    First pass: Render scene to offscreen framebuffer
			*/

			std::array<VkClearValue, 3> clear_values;
			clear_values[0].color        = {{0.0f, 0.0f, 0.0f, 0.0f}};
			clear_values[1].color        = {{0.0f, 0.0f, 0.0f, 0.0f}};
			clear_values[2].depthStencil = {0.0f, 0};

			VkRenderPassBeginInfo render_pass_begin_info    = vkb::initializers::render_pass_begin_info();
			render_pass_begin_info.renderPass               = offscreen.render_pass;
			render_pass_begin_info.framebuffer              = offscreen.framebuffer;
			render_pass_begin_info.renderArea.extent.width  = offscreen.width;
			render_pass_begin_info.renderArea.extent.height = offscreen.height;
			render_pass_begin_info.clearValueCount          = 3;
			render_pass_begin_info.pClearValues             = clear_values.data();

			vkCmdBeginRenderPass(draw_cmd_buffers[i], &render_pass_begin_info, VK_SUBPASS_CONTENTS_INLINE);

			VkViewport viewport = vkb::initializers::viewport(static_cast<float>(offscreen.width), static_cast<float>(offscreen.height), 0.0f, 1.0f);
			vkCmdSetViewport(draw_cmd_buffers[i], 0, 1, &viewport);

			VkRect2D scissor = vkb::initializers::rect2D(offscreen.width, offscreen.height, 0, 0);
			vkCmdSetScissor(draw_cmd_buffers[i], 0, 1, &scissor);

			VkDeviceSize offsets[1] = {0};

			// Skybox
			if (display_skybox)
			{
				vkCmdBindPipeline(draw_cmd_buffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.skybox);
				vkCmdBindDescriptorSets(draw_cmd_buffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline_layouts.models, 0, 1, &descriptor_sets.skybox, 0, NULL);

				draw_model(models.skybox, draw_cmd_buffers[i]);
			}

			// 3D object
			vkCmdBindPipeline(draw_cmd_buffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.reflect);