public void Build(int deviceIndex)
{
if (!locked)
{
unsafe
{
//create pipeline shader stages
var shaderStages = new VkPipelineShaderStageCreateInfo[Shaders.Length];
var shaderSpecializations = new ManagedPtr <VkSpecializationInfo> [Shaders.Length];
var shaderSpecializationBufferPtrs = new MemoryHandle[Shaders.Length];
for (int i = 0; i < shaderStages.Length; i++)
{
if (SpecializationData != null)
{
shaderSpecializationBufferPtrs[i] = SpecializationData[i].Pin();
shaderSpecializations[i] = new VkSpecializationInfo()
{
mapEntryCount = (uint)SpecializationData[i].Length,
pMapEntries = Shaders[i].Specialize(),
dataSize = (uint)SpecializationData[i].Length * sizeof(int),
pData = (IntPtr)shaderSpecializationBufferPtrs[i].Pointer
}.Pointer();
}
shaderStages[i].sType = VkStructureType.StructureTypePipelineShaderStageCreateInfo;
shaderStages[i].stage = (VkShaderStageFlags)Shaders[i].ShaderType;
shaderStages[i].module = Shaders[i].ids[deviceIndex];
shaderStages[i].pName = "main";
shaderStages[i].pSpecializationInfo = shaderSpecializations[i] != null ? shaderSpecializations[i] : IntPtr.Zero;
}
var shaderStages_ptr = shaderStages.Pointer();
//VkPipelineVertexInputStateCreateInfo - dummy, engine doesn't support fix function vertex input
var vertexInputInfo = new VkPipelineVertexInputStateCreateInfo()
{
sType = VkStructureType.StructureTypePipelineVertexInputStateCreateInfo,
vertexBindingDescriptionCount = 0,
vertexAttributeDescriptionCount = 0,
};
var vertexInputInfo_ptr = vertexInputInfo.Pointer();
//VkPipelineInputAssemblyStateCreateInfo - state
var inputAssembly = new VkPipelineInputAssemblyStateCreateInfo()
{
sType = VkStructureType.StructureTypePipelineInputAssemblyStateCreateInfo,
topology = (VkPrimitiveTopology)Topology,
primitiveRestartEnable = false,
};
var inputAssembly_ptr = inputAssembly.Pointer();
//VkPipelineViewportStateCreateInfo - dynamic state, no scissor
var viewport = new VkViewport()
{
x = ViewportX,
y = ViewportY,
width = ViewportWidth,
height = ViewportHeight,
minDepth = ViewportMinDepth,
maxDepth = ViewportMaxDepth,
};
var scissor = new VkRect2D()
{
offset = new VkOffset2D()
{
x = (int)ViewportX,
y = (int)ViewportY
},
extent = new VkExtent2D()
{
width = ViewportWidth,
height = ViewportHeight
}
};
var viewport_ptr = viewport.Pointer();
var scissor_ptr = scissor.Pointer();
var viewportCreateInfo = new VkPipelineViewportStateCreateInfo()
{
sType = VkStructureType.StructureTypePipelineViewportStateCreateInfo,
viewportCount = 1,
pViewports = viewport_ptr,
scissorCount = 1,
pScissors = scissor_ptr
};
var viewportCreateInfo_ptr = viewportCreateInfo.Pointer();
//VkPipelineRasterizationStateCreateInfo - state
var rasterizer = new VkPipelineRasterizationStateCreateInfo()
{
sType = VkStructureType.StructureTypePipelineRasterizationStateCreateInfo,
depthClampEnable = DepthClamp,
rasterizerDiscardEnable = RasterizerDiscard,
polygonMode = (VkPolygonMode)Fill,
lineWidth = LineWidth,
cullMode = (VkCullModeFlags)CullMode,
frontFace = VkFrontFace.FrontFaceCounterClockwise, //OpenGL default
depthBiasEnable = false,
depthBiasConstantFactor = 0,
depthBiasClamp = 0,
depthBiasSlopeFactor = 0,
};
var rasterizer_ptr = rasterizer.Pointer();
//VkPipelineMultisampleStateCreateInfo - don't support for now
var multisampling = new VkPipelineMultisampleStateCreateInfo()
{
sType = VkStructureType.StructureTypePipelineMultisampleStateCreateInfo,
sampleShadingEnable = false,
rasterizationSamples = VkSampleCountFlags.SampleCount1Bit,
minSampleShading = 1,
pSampleMask = null,
alphaToCoverageEnable = false,
alphaToOneEnable = false
};
var multisampling_ptr = multisampling.Pointer();
//VkPipelineDepthStencilStateCreateInfo - state
var depthStencil = new VkPipelineDepthStencilStateCreateInfo()
{
sType = VkStructureType.StructureTypePipelineDepthStencilStateCreateInfo,
depthTestEnable = true,
depthCompareOp = (VkCompareOp)DepthTest,
depthWriteEnable = DepthWrite,
depthBoundsTestEnable = false,
stencilTestEnable = false,
maxDepthBounds = ViewportMaxDepth,
minDepthBounds = ViewportMinDepth,
};
var depthStencil_ptr = depthStencil.Pointer();
//VkPipelineColorBlendStateCreateInfo - state
var colorBlendStates = new VkPipelineColorBlendAttachmentState[RenderPass.ColorAttachments == null ? 0 : RenderPass.ColorAttachments.Length];
for (int i = 0; i < colorBlendStates.Length; i++)
{
colorBlendStates[i] = new VkPipelineColorBlendAttachmentState()
{
colorWriteMask = VkColorComponentFlags.ColorComponentRBit | VkColorComponentFlags.ColorComponentGBit | VkColorComponentFlags.ColorComponentBBit | VkColorComponentFlags.ColorComponentABit,
blendEnable = false,
};
}
var colorBlendStates_ptr = colorBlendStates.Pointer();
var colorBlend = new VkPipelineColorBlendStateCreateInfo()
{
sType = VkStructureType.StructureTypePipelineColorBlendStateCreateInfo,
logicOpEnable = false,
logicOp = VkLogicOp.LogicOpCopy,
attachmentCount = (uint)colorBlendStates.Length,
pAttachments = colorBlendStates_ptr,
};
colorBlend.blendConstants[0] = 0;
colorBlend.blendConstants[1] = 0;
colorBlend.blendConstants[2] = 0;
colorBlend.blendConstants[3] = 0;
var colorBlend_ptr = colorBlend.Pointer();
var dynamicStates = stackalloc VkDynamicState[]
{
VkDynamicState.DynamicStateViewport
};
var dynamicState = new VkPipelineDynamicStateCreateInfo()
{
sType = VkStructureType.StructureTypePipelineDynamicStateCreateInfo,
dynamicStateCount = ViewportDynamic ? 1u : 0u,
pDynamicStates = dynamicStates
};
var dynamicState_ptr = dynamicState.Pointer();
//Setup graphics pipeline
var pipelineInfo = new VkGraphicsPipelineCreateInfo()
{
sType = VkStructureType.StructureTypeGraphicsPipelineCreateInfo,
stageCount = (uint)shaderStages.Length,
pStages = shaderStages_ptr,
pVertexInputState = vertexInputInfo_ptr,
pInputAssemblyState = inputAssembly_ptr,
pViewportState = viewportCreateInfo_ptr,
pRasterizationState = rasterizer_ptr,
pMultisampleState = multisampling_ptr,
pDepthStencilState = depthStencil_ptr,
pColorBlendState = colorBlend_ptr,
pDynamicState = dynamicState_ptr,
layout = PipelineLayout.hndl,
renderPass = RenderPass.hndl,
subpass = 0,
basePipelineHandle = IntPtr.Zero,
basePipelineIndex = -1,
};
IntPtr pipeline_l = IntPtr.Zero;
if (vkCreateGraphicsPipelines(GraphicsDevice.GetDeviceInfo(deviceIndex).Device, IntPtr.Zero, 1, pipelineInfo.Pointer(), null, &pipeline_l) != VkResult.Success)
{
throw new Exception("Failed to create graphics pipeline.");
}
hndl = pipeline_l;
if (GraphicsDevice.EnableValidation)
{
var objName = new VkDebugUtilsObjectNameInfoEXT()
{
sType = VkStructureType.StructureTypeDebugUtilsObjectNameInfoExt,
pObjectName = Name,
objectType = VkObjectType.ObjectTypePipeline,
objectHandle = (ulong)hndl
};
GraphicsDevice.SetDebugUtilsObjectNameEXT(GraphicsDevice.GetDeviceInfo(deviceIndex).Device, objName.Pointer());
}
devID = deviceIndex;
locked = true;
}
}
else
{
throw new Exception("Pipeline is locked.");
}
}
