Exemplo n.º 1
0
        void CreateRenderPass()
        {
            var colorAttachment = new VkAttachmentDescription();

            colorAttachment.format         = swapchainImageFormat;
            colorAttachment.samples        = CSGL.Vulkan.VkSampleCountFlags._1_Bit;
            colorAttachment.loadOp         = CSGL.Vulkan.VkAttachmentLoadOp.Clear;
            colorAttachment.storeOp        = CSGL.Vulkan.VkAttachmentStoreOp.Store;
            colorAttachment.stencilLoadOp  = CSGL.Vulkan.VkAttachmentLoadOp.DontCare;
            colorAttachment.stencilStoreOp = CSGL.Vulkan.VkAttachmentStoreOp.DontCare;
            colorAttachment.initialLayout  = CSGL.Vulkan.VkImageLayout.Undefined;
            colorAttachment.finalLayout    = CSGL.Vulkan.VkImageLayout.PresentSrcKhr;

            var colorAttachmentNative = new Native <VkAttachmentDescription>(colorAttachment);

            var colorAttachmentRef = new VkAttachmentReference();

            colorAttachmentRef.attachment = 0;
            colorAttachmentRef.layout     = CSGL.Vulkan.VkImageLayout.ColorAttachmentOptimal;

            var colorAttachmentRefNative = new Native <VkAttachmentReference>(colorAttachmentRef);

            var subpass = new VkSubpassDescription();

            subpass.pipelineBindPoint    = CSGL.Vulkan.VkPipelineBindPoint.Graphics;
            subpass.colorAttachmentCount = 1;
            subpass.pColorAttachments    = colorAttachmentRefNative.Address;

            var subpassNative = new Native <VkSubpassDescription>(subpass);

            var dependency = new VkSubpassDependency();

            dependency.srcSubpass    = uint.MaxValue; //VK_SUBPASS_EXTERNAL
            dependency.dstSubpass    = 0;
            dependency.srcStageMask  = CSGL.Vulkan.VkPipelineStageFlags.BottomOfPipeBit;
            dependency.srcAccessMask = CSGL.Vulkan.VkAccessFlags.MemoryReadBit;
            dependency.dstStageMask  = CSGL.Vulkan.VkPipelineStageFlags.ColorAttachmentOutputBit;
            dependency.dstAccessMask = CSGL.Vulkan.VkAccessFlags.ColorAttachmentReadBit
                                       | CSGL.Vulkan.VkAccessFlags.ColorAttachmentWriteBit;

            var dependencyNative = new Native <VkSubpassDependency>(dependency);

            var info = new VkRenderPassCreateInfo();

            info.sType           = CSGL.Vulkan.VkStructureType.RenderPassCreateInfo;
            info.attachmentCount = 1;
            info.pAttachments    = colorAttachmentNative.Address;
            info.subpassCount    = 1;
            info.pSubpasses      = subpassNative.Address;
            info.dependencyCount = 1;
            info.pDependencies   = dependencyNative.Address;

            if (renderPass != VkRenderPass.Null)
            {
                VK.DestroyRenderPass(device, renderPass, alloc);
            }

            var result = VK.CreateRenderPass(device, ref info, alloc, out renderPass);

            colorAttachmentNative.Dispose();
            colorAttachmentRefNative.Dispose();
            subpassNative.Dispose();
            dependencyNative.Dispose();
        }