private void createCommandBuffers(VkContext context)
{
var allocInfo = new Vk.CommandBufferAllocateInfo();
allocInfo.CommandPool = context.GraphicsCommandPool;
allocInfo.Level = Vk.CommandBufferLevel.Primary;
allocInfo.CommandBufferCount = this.wrapper.ImageCapacity;
try {
this.wrapper.CommandBuffers = context.Device.AllocateCommandBuffers(allocInfo);
} catch (Vk.ResultException result) {
throw new VkException("An error occurred while creating the command buffers.", result);
}
for (int i = 0; i < this.wrapper.ImageCapacity; i++)
{
Vk.CommandBuffer buffer = this.wrapper.CommandBuffers[i];
var beginInfo = new Vk.CommandBufferBeginInfo();
beginInfo.Flags = Vk.CommandBufferUsageFlags.SimultaneousUse;
try {
buffer.Begin(beginInfo);
} catch (Vk.ResultException result) {
throw new VkException($"An error occurred while beginning recording for command buffer {i}.", result);
}
var renderPassInfo = new Vk.RenderPassBeginInfo();
renderPassInfo.RenderPass = this.wrapper.RenderPass;
renderPassInfo.Framebuffer = this.wrapper.Framebuffers[i];
var clearColour = new Vk.ClearValue();
var renderArea = new Vk.Rect2D();
clearColour.Color = new Vk.ClearColorValue(new float[] { 0.0F, 0.0F, 0.0F, 1.0F });
renderArea.Extent.Width = this.wrapper.Extent.Width;
renderArea.Extent.Height = this.wrapper.Extent.Height;
renderArea.Offset.X = 0;
renderArea.Offset.Y = 0;
var clearDepth = new Vk.ClearValue();
var depth = new Vk.ClearDepthStencilValue();
depth.Depth = 1;
clearDepth.DepthStencil = depth;
renderPassInfo.RenderArea = renderArea;
renderPassInfo.ClearValueCount = 2;
renderPassInfo.ClearValues = new Vk.ClearValue[] {
clearColour,
clearDepth
};
buffer.CmdBeginRenderPass(renderPassInfo, Vk.SubpassContents.Inline);
buffer.CmdBindPipeline(Vk.PipelineBindPoint.Graphics, this.wrapper.Pipeline);
buffer.CmdBindDescriptorSet(Vk.PipelineBindPoint.Graphics,
this.wrapper.PipelineLayout, 0, this.wrapper.DescriptorSets[i], null);
this.renderPassCallback.Invoke(buffer);
buffer.CmdEndRenderPass();
try {
buffer.End();
} catch (Vk.ResultException result) {
throw new VkException($"An error occurred while recording for command buffer {i}.", result);
}
}
}
private void createGraphicsPipeline(VkContext context)
{
var vertShaderStageInfo = new Vk.PipelineShaderStageCreateInfo();
vertShaderStageInfo.Stage = Vk.ShaderStageFlags.Vertex;
vertShaderStageInfo.Module = this.vertexShader;
vertShaderStageInfo.Name = "main";
var fragShaderStageInfo = new Vk.PipelineShaderStageCreateInfo();
fragShaderStageInfo.Stage = Vk.ShaderStageFlags.Fragment;
fragShaderStageInfo.Module = this.fragmentShader;
fragShaderStageInfo.Name = "main";
var shaderStageInfos = new Vk.PipelineShaderStageCreateInfo[] {
vertShaderStageInfo,
fragShaderStageInfo
};
var attributes = Vertex.AttributeDescriptions;
var bindings = new Vk.VertexInputBindingDescription[] {
Vertex.BindingDescription
};
var vertexInputInfo = new Vk.PipelineVertexInputStateCreateInfo();
vertexInputInfo.VertexBindingDescriptionCount = (uint)bindings.Length;
vertexInputInfo.VertexBindingDescriptions = bindings;
vertexInputInfo.VertexAttributeDescriptionCount = (uint)attributes.Length;
vertexInputInfo.VertexAttributeDescriptions = attributes;
var inputAssemblyInfo = new Vk.PipelineInputAssemblyStateCreateInfo();
inputAssemblyInfo.Topology = Vk.PrimitiveTopology.TriangleList;
inputAssemblyInfo.PrimitiveRestartEnable = false;
Vk.Viewport viewport = new Vk.Viewport();
viewport.X = 0.0F;
viewport.Y = 0.0F;
viewport.Width = (float)this.wrapper.Extent.Width;
viewport.Height = (float)this.wrapper.Extent.Height;
viewport.MinDepth = 0.0F;
viewport.MaxDepth = 1.0F;
Vk.Rect2D scissorRect = new Vk.Rect2D();
scissorRect.Offset.X = 0;
scissorRect.Offset.Y = 0;
scissorRect.Extent = this.wrapper.Extent;
var viewportStateInfo = new Vk.PipelineViewportStateCreateInfo();
viewportStateInfo.ViewportCount = 1;
viewportStateInfo.Viewports = new Vk.Viewport[] { viewport };
viewportStateInfo.ScissorCount = 1;
viewportStateInfo.Scissors = new Vk.Rect2D[] { scissorRect };
var rasteriserInfo = new Vk.PipelineRasterizationStateCreateInfo();
rasteriserInfo.DepthClampEnable = false;
rasteriserInfo.RasterizerDiscardEnable = false;
rasteriserInfo.PolygonMode = Vk.PolygonMode.Fill;
rasteriserInfo.LineWidth = 1.0F;
rasteriserInfo.CullMode = Vk.CullModeFlags.Back;
rasteriserInfo.FrontFace = Vk.FrontFace.Clockwise;
rasteriserInfo.DepthBiasEnable = false;
var multisamplingInfo = new Vk.PipelineMultisampleStateCreateInfo();
multisamplingInfo.SampleShadingEnable = false;
multisamplingInfo.RasterizationSamples = Vk.SampleCountFlags.Count1;
var colourBlendAttachmentInfo = new Vk.PipelineColorBlendAttachmentState();
colourBlendAttachmentInfo.ColorWriteMask =
Vk.ColorComponentFlags.R |
Vk.ColorComponentFlags.G |
Vk.ColorComponentFlags.B |
Vk.ColorComponentFlags.A;
colourBlendAttachmentInfo.BlendEnable = true;
colourBlendAttachmentInfo.SrcColorBlendFactor = Vk.BlendFactor.SrcAlpha;
colourBlendAttachmentInfo.DstColorBlendFactor = Vk.BlendFactor.OneMinusSrcAlpha;
colourBlendAttachmentInfo.ColorBlendOp = Vk.BlendOp.Add;
colourBlendAttachmentInfo.SrcAlphaBlendFactor = Vk.BlendFactor.One;
colourBlendAttachmentInfo.DstAlphaBlendFactor = Vk.BlendFactor.Zero;
colourBlendAttachmentInfo.AlphaBlendOp = Vk.BlendOp.Add;
var colourBlendAttachmentInfos = new Vk.PipelineColorBlendAttachmentState[] {
colourBlendAttachmentInfo
};
var colourBlendStateInfo = new Vk.PipelineColorBlendStateCreateInfo();
colourBlendStateInfo.LogicOpEnable = false;
colourBlendStateInfo.LogicOp = Vk.LogicOp.Copy;
colourBlendStateInfo.AttachmentCount = 1;
colourBlendStateInfo.Attachments = colourBlendAttachmentInfos;
var pipelineLayoutInfo = new Vk.PipelineLayoutCreateInfo();
pipelineLayoutInfo.SetLayoutCount = 1;
pipelineLayoutInfo.SetLayouts = new Vk.DescriptorSetLayout[] {
this.descriptorSetLayout
};
try {
this.wrapper.PipelineLayout = context.Device.CreatePipelineLayout(pipelineLayoutInfo);
} catch (Vk.ResultException result) {
throw new VkException("An error occurred while creating the pipeline layout.", result);
}
var depthStencil = new Vk.PipelineDepthStencilStateCreateInfo();
depthStencil.DepthTestEnable = true;
depthStencil.DepthWriteEnable = true;
depthStencil.DepthCompareOp = Vk.CompareOp.Less;
depthStencil.DepthBoundsTestEnable = false;
depthStencil.StencilTestEnable = false;
var pipelineInfo = new Vk.GraphicsPipelineCreateInfo();
pipelineInfo.StageCount = 2;
pipelineInfo.Stages = shaderStageInfos;
pipelineInfo.VertexInputState = vertexInputInfo;
pipelineInfo.InputAssemblyState = inputAssemblyInfo;
pipelineInfo.ViewportState = viewportStateInfo;
pipelineInfo.RasterizationState = rasteriserInfo;
pipelineInfo.MultisampleState = multisamplingInfo;
pipelineInfo.DepthStencilState = depthStencil;
pipelineInfo.ColorBlendState = colourBlendStateInfo;
pipelineInfo.DynamicState = null;
pipelineInfo.Layout = this.wrapper.PipelineLayout;
pipelineInfo.RenderPass = this.wrapper.RenderPass;
pipelineInfo.Subpass = 0;
pipelineInfo.BasePipelineHandle = null;
pipelineInfo.BasePipelineIndex = -1;
var pipelineInfos = new Vk.GraphicsPipelineCreateInfo[] {
pipelineInfo
};
try {
this.wrapper.Pipeline = context.Device.CreateGraphicsPipelines(null, pipelineInfos)[0];
} catch (Vk.ResultException result) {
throw new VkException("An error occurred while creating the graphics pipeline.", result);
}
}