public Vk.CommandBuffer BeginSingleTimeCommands(Vk.CommandPool commandPool)
{
var allocInfo = new Vk.CommandBufferAllocateInfo();
allocInfo.Level = Vk.CommandBufferLevel.Primary;
allocInfo.CommandPool = commandPool;
allocInfo.CommandBufferCount = 1;
var buffer = this.Device.AllocateCommandBuffers(allocInfo)[0];
var beginInfo = new Vk.CommandBufferBeginInfo();
beginInfo.Flags = Vk.CommandBufferUsageFlags.OneTimeSubmit;
buffer.Begin(beginInfo);
return(buffer);
}
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);
}
}
}
