private void CreateGraphicsPipeline()
{
byte[] vertShaderCode = File.ReadAllBytes("Shaders/vert.spv");
byte[] fragShaderCode = File.ReadAllBytes("Shaders/frag.spv");
VkShaderModule vertShaderModule = this.CreateShaderModule(vertShaderCode);
VkShaderModule fragShaderModule = this.CreateShaderModule(fragShaderCode);
VkPipelineShaderStageCreateInfo vertShaderStageInfo = new VkPipelineShaderStageCreateInfo()
{
sType = VkStructureType.VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
stage = VkShaderStageFlags.VK_SHADER_STAGE_VERTEX_BIT,
module = vertShaderModule,
pName = "main".ToPointer(),
};
VkPipelineShaderStageCreateInfo fragShaderStageInfo = new VkPipelineShaderStageCreateInfo()
{
sType = VkStructureType.VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
stage = VkShaderStageFlags.VK_SHADER_STAGE_FRAGMENT_BIT,
module = fragShaderModule,
pName = "main".ToPointer(),
};
VkPipelineShaderStageCreateInfo *shaderStages = stackalloc VkPipelineShaderStageCreateInfo[] { vertShaderStageInfo, fragShaderStageInfo };
// Vertex Input
VkPipelineVertexInputStateCreateInfo vertexInputInfo = new VkPipelineVertexInputStateCreateInfo()
{
sType = VkStructureType.VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO,
vertexBindingDescriptionCount = 0,
pVertexBindingDescriptions = null, // Optional
vertexAttributeDescriptionCount = 0,
pVertexAttributeDescriptions = null, // Optional
};
// Input assembly
VkPipelineInputAssemblyStateCreateInfo inputAssembly = new VkPipelineInputAssemblyStateCreateInfo()
{
sType = VkStructureType.VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO,
topology = VkPrimitiveTopology.VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST,
primitiveRestartEnable = false,
};
// Viewports and scissors
VkViewport viewport = new VkViewport()
{
x = 0.0f,
y = 0.0f,
width = (float)swapChainExtent.width,
height = (float)swapChainExtent.height,
minDepth = 0.0f,
maxDepth = 1.0f,
};
VkRect2D scissor = new VkRect2D()
{
offset = new VkOffset2D(0, 0),
extent = swapChainExtent,
};
VkPipelineViewportStateCreateInfo viewportState = new VkPipelineViewportStateCreateInfo()
{
sType = VkStructureType.VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO,
viewportCount = 1,
pViewports = &viewport,
scissorCount = 1,
pScissors = &scissor,
};
// Rasterizer
VkPipelineRasterizationStateCreateInfo rasterizer = new VkPipelineRasterizationStateCreateInfo()
{
sType = VkStructureType.VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO,
depthClampEnable = false,
rasterizerDiscardEnable = false,
polygonMode = VkPolygonMode.VK_POLYGON_MODE_FILL,
lineWidth = 1.0f,
cullMode = VkCullModeFlags.VK_CULL_MODE_BACK_BIT,
frontFace = VkFrontFace.VK_FRONT_FACE_CLOCKWISE,
depthBiasEnable = false,
depthBiasConstantFactor = 0.0f, // Optional
depthBiasClamp = 0.0f, // Optional
depthBiasSlopeFactor = 0.0f, // Optional
};
VkPipelineMultisampleStateCreateInfo multisampling = new VkPipelineMultisampleStateCreateInfo()
{
sType = VkStructureType.VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO,
sampleShadingEnable = false,
rasterizationSamples = VkSampleCountFlags.VK_SAMPLE_COUNT_1_BIT,
minSampleShading = 1.0f, // Optional
pSampleMask = null, // Optional
alphaToCoverageEnable = false, // Optional
alphaToOneEnable = false, // Optional
};
// Depth and Stencil testing
//VkPipelineDepthStencilStateCreateInfo
// Color blending
VkPipelineColorBlendAttachmentState colorBlendAttachment = new VkPipelineColorBlendAttachmentState()
{
colorWriteMask = VkColorComponentFlags.VK_COLOR_COMPONENT_R_BIT |
VkColorComponentFlags.VK_COLOR_COMPONENT_G_BIT |
VkColorComponentFlags.VK_COLOR_COMPONENT_B_BIT |
VkColorComponentFlags.VK_COLOR_COMPONENT_A_BIT,
blendEnable = false,
srcColorBlendFactor = VkBlendFactor.VK_BLEND_FACTOR_ONE, // Optional
dstColorBlendFactor = VkBlendFactor.VK_BLEND_FACTOR_ZERO, // Optional
colorBlendOp = VkBlendOp.VK_BLEND_OP_ADD, // Optional
srcAlphaBlendFactor = VkBlendFactor.VK_BLEND_FACTOR_ONE, // Optional
dstAlphaBlendFactor = VkBlendFactor.VK_BLEND_FACTOR_ZERO, // Optional
alphaBlendOp = VkBlendOp.VK_BLEND_OP_ADD, // Optional
};
VkPipelineColorBlendStateCreateInfo colorBlending = new VkPipelineColorBlendStateCreateInfo()
{
sType = VkStructureType.VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO,
logicOpEnable = false,
logicOp = VkLogicOp.VK_LOGIC_OP_COPY, // Optional
attachmentCount = 1,
pAttachments = &colorBlendAttachment,
blendConstants_0 = 0.0f, // Optional
blendConstants_1 = 0.0f, // Optional
blendConstants_2 = 0.0f, // Optional
blendConstants_3 = 0.0f, // Optional
};
VkPipelineLayoutCreateInfo pipelineLayoutInfo = new VkPipelineLayoutCreateInfo()
{
sType = VkStructureType.VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO,
setLayoutCount = 0, // Optional
pSetLayouts = null, // Optional
pushConstantRangeCount = 0, // Optional
pPushConstantRanges = null, // Optional
};
fixed(VkPipelineLayout *pipelineLayoutPtr = &pipelineLayout)
{
Helpers.CheckErrors(VulkanNative.vkCreatePipelineLayout(device, &pipelineLayoutInfo, null, pipelineLayoutPtr));
}
VkGraphicsPipelineCreateInfo pipelineInfo = new VkGraphicsPipelineCreateInfo()
{
sType = VkStructureType.VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO,
stageCount = 2,
pStages = shaderStages,
pVertexInputState = &vertexInputInfo,
pInputAssemblyState = &inputAssembly,
pViewportState = &viewportState,
pRasterizationState = &rasterizer,
pMultisampleState = &multisampling,
pDepthStencilState = null, // Optional
pColorBlendState = &colorBlending,
pDynamicState = null, // Optional
layout = this.pipelineLayout,
renderPass = this.renderPass,
subpass = 0,
basePipelineHandle = 0, // Optional
basePipelineIndex = -1, // Optional
};
fixed(VkPipeline *graphicsPipelinePtr = &this.graphicsPipeline)
{
Helpers.CheckErrors(VulkanNative.vkCreateGraphicsPipelines(this.device, 0, 1, &pipelineInfo, null, graphicsPipelinePtr));
}
VulkanNative.vkDestroyShaderModule(device, fragShaderModule, null);
VulkanNative.vkDestroyShaderModule(device, vertShaderModule, null);
}
private void CreateGraphicsPipeline()
{
// Shader stages
var vertShaderCode = System.IO.File.ReadAllBytes("Shaders/vert.spv");
var fragShaderCode = System.IO.File.ReadAllBytes("Shaders/frag.spv");
var vertShaderModule = CreateShaderModule(vertShaderCode);
var fragShaderModule = CreateShaderModule(fragShaderCode);
string name = "main";
int byteCount = System.Text.Encoding.UTF8.GetByteCount(name);
byte * utf8Ptr = stackalloc byte[byteCount];
fixed(char *namePtr = name)
{
System.Text.Encoding.UTF8.GetBytes(namePtr, name.Length, utf8Ptr, byteCount);
}
var vertShaderStageInfo = new VkPipelineShaderStageCreateInfo()
{
sType = VkStructureType.VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
stage = VkShaderStageFlagBits.VK_SHADER_STAGE_VERTEX_BIT,
module = vertShaderModule,
pName = utf8Ptr,
};
var fragShaderStageInfo = new VkPipelineShaderStageCreateInfo()
{
sType = VkStructureType.VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
stage = VkShaderStageFlagBits.VK_SHADER_STAGE_FRAGMENT_BIT,
module = fragShaderModule,
pName = utf8Ptr,
};
var shaderStages = stackalloc VkPipelineShaderStageCreateInfo[] { vertShaderStageInfo, fragShaderStageInfo };
// VertexInput
var vertexInputInfo = new VkPipelineVertexInputStateCreateInfo()
{
sType = VkStructureType.VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO,
vertexBindingDescriptionCount = 0,
pVertexBindingDescriptions = null,
vertexAttributeDescriptionCount = 0,
pVertexAttributeDescriptions = null,
};
var inputAssembly = new VkPipelineInputAssemblyStateCreateInfo()
{
sType = VkStructureType.VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO,
topology = VkPrimitiveTopology.VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST,
primitiveRestartEnable = false,
};
var viewport = new VkViewport()
{
x = 0f,
y = 0f,
width = (float)vkSwapChainExtent.width,
height = (float)vkSwapChainExtent.height,
minDepth = 0f,
maxDepth = 1f,
};
var scissor = new VkRect2D()
{
offset = new VkOffset2D()
{
x = 0, y = 0
},
extent = vkSwapChainExtent,
};
var viewportState = new VkPipelineViewportStateCreateInfo()
{
sType = VkStructureType.VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO,
viewportCount = 1,
pViewports = &viewport,
scissorCount = 1,
pScissors = &scissor,
};
var rasterizer = new VkPipelineRasterizationStateCreateInfo()
{
sType = VkStructureType.VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO,
depthClampEnable = false,
rasterizerDiscardEnable = false,
polygonMode = VkPolygonMode.VK_POLYGON_MODE_FILL,
lineWidth = 1f,
cullMode = VkCullModeFlagBits.VK_CULL_MODE_BACK_BIT,
frontFace = VkFrontFace.VK_FRONT_FACE_CLOCKWISE,
depthBiasEnable = false,
depthBiasConstantFactor = 0f,
depthBiasClamp = 0f,
depthBiasSlopeFactor = 0f,
};
var multisampling = new VkPipelineMultisampleStateCreateInfo()
{
sType = VkStructureType.VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO,
sampleShadingEnable = false,
rasterizationSamples = VkSampleCountFlagBits.VK_SAMPLE_COUNT_1_BIT,
minSampleShading = 1f,
pSampleMask = null,
alphaToCoverageEnable = false,
alphaToOneEnable = false,
};
var colorBlendAttachment = new VkPipelineColorBlendAttachmentState()
{
colorWriteMask = VkColorComponentFlagBits.VK_COLOR_COMPONENT_R_BIT | VkColorComponentFlagBits.VK_COLOR_COMPONENT_G_BIT | VkColorComponentFlagBits.VK_COLOR_COMPONENT_B_BIT | VkColorComponentFlagBits.VK_COLOR_COMPONENT_A_BIT,
blendEnable = false,
};
var colorBlending = new VkPipelineColorBlendStateCreateInfo()
{
sType = VkStructureType.VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO,
logicOpEnable = false,
logicOp = VkLogicOp.VK_LOGIC_OP_COPY,
pAttachments = &colorBlendAttachment,
attachmentCount = 1,
blendConstants_0 = 0f,
blendConstants_1 = 0f,
blendConstants_2 = 0f,
blendConstants_3 = 0f,
};
var pipelineLayoutInfo = new VkPipelineLayoutCreateInfo()
{
sType = VkStructureType.VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO,
setLayoutCount = 0,
pushConstantRangeCount = 0,
};
VkPipelineLayout newPipelineLayout;
var result = VulkanNative.vkCreatePipelineLayout(vkDevice, &pipelineLayoutInfo, null, &newPipelineLayout);
vkPipelineLayout = newPipelineLayout;
Helpers.CheckErrors(result);
var pipelineInfo = new VkGraphicsPipelineCreateInfo()
{
sType = VkStructureType.VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO,
stageCount = 2,
pStages = shaderStages,
pVertexInputState = &vertexInputInfo,
pInputAssemblyState = &inputAssembly,
pViewportState = &viewportState,
pRasterizationState = &rasterizer,
pMultisampleState = &multisampling,
pDepthStencilState = null,
pColorBlendState = &colorBlending,
pDynamicState = null,
layout = vkPipelineLayout,
renderPass = vkRenderPass,
subpass = 0,
basePipelineHandle = 0,
basePipelineIndex = -1,
};
VkPipeline newPipeline;
result = VulkanNative.vkCreateGraphicsPipelines(vkDevice, 0, 1, &pipelineInfo, null, &newPipeline);
vkGraphicsPipeline = newPipeline;
Helpers.CheckErrors(result);
VulkanNative.vkDestroyShaderModule(vkDevice, vertShaderModule, null);
VulkanNative.vkDestroyShaderModule(vkDevice, fragShaderModule, null);
}
public unsafe GraphicsPipeline(
Device device,
RenderPass renderPass,
List <DescriptorLayout> layouts,
List <ShaderModule> shaders,
PipelineInputBuilder pipelineInputBuilder,
uint subPass = 0,
PipelineOptions options = null
) : base(device, renderPass, VkPipelineLayout.Null, VkPipeline.Null)
{
if (options == null)
{
options = PipelineOptions.Default;
}
#region Pipeline Layout
var setLayout = new NativeList <VkDescriptorSetLayout>();
foreach (var layout in layouts)
{
setLayout.Add(layout.Handle);
}
var pipelineLayoutInfo = new VkPipelineLayoutCreateInfo
{
sType = VkStructureType.PipelineLayoutCreateInfo,
setLayoutCount = setLayout.Count,
pSetLayouts = (VkDescriptorSetLayout *)setLayout.Data.ToPointer()
};
VkPipelineLayout pipelineLayout;
if (VulkanNative.vkCreatePipelineLayout(
device.Handle,
&pipelineLayoutInfo,
null,
&pipelineLayout
) != VkResult.Success)
{
throw new Exception("failed to create pipeline layout");
}
_layout = pipelineLayout;
#endregion
var bindingDescriptions = pipelineInputBuilder.BindingDescriptions;
var attributeDescriptions = pipelineInputBuilder.AttributeDescriptions;
var vertexInputInfo = new VkPipelineVertexInputStateCreateInfo
{
sType = VkStructureType.PipelineVertexInputStateCreateInfo,
vertexBindingDescriptionCount = bindingDescriptions.Count,
pVertexBindingDescriptions = (VkVertexInputBindingDescription *)bindingDescriptions.Data.ToPointer(),
vertexAttributeDescriptionCount = attributeDescriptions.Count,
pVertexAttributeDescriptions = (VkVertexInputAttributeDescription *)attributeDescriptions.Data.ToPointer()
};
var inputAssemble = new VkPipelineInputAssemblyStateCreateInfo
{
sType = VkStructureType.PipelineInputAssemblyStateCreateInfo,
topology = options.Topology,
primitiveRestartEnable = VkBool32.False
};
var viewport = new VkViewport(); //dynamic (ignored)
var scissor = new VkRect2D(); //dynamic (ignored)
var viewportState = new VkPipelineViewportStateCreateInfo
{
sType = VkStructureType.PipelineViewportStateCreateInfo,
viewportCount = 1,
pViewports = &viewport,
scissorCount = 1,
pScissors = &scissor
};
var rasterizer = new VkPipelineRasterizationStateCreateInfo
{
sType = VkStructureType.PipelineRasterizationStateCreateInfo,
depthClampEnable = false,
rasterizerDiscardEnable = VkBool32.False,
polygonMode = options.PolygonMode,
lineWidth = 1.0f,
cullMode = options.CullMode,
frontFace = options.FrontFace,
depthBiasEnable = VkBool32.False
};
var multisampling = new VkPipelineMultisampleStateCreateInfo
{
sType = VkStructureType.PipelineMultisampleStateCreateInfo,
sampleShadingEnable = VkBool32.False,
rasterizationSamples = VkSampleCountFlags.Count1,
minSampleShading = 1.0f,
pSampleMask = null,
alphaToCoverageEnable = VkBool32.False,
alphaToOneEnable = VkBool32.False
};
bool hasDepthAttachment = false;
var colorBlendAttachments = new NativeList <VkPipelineColorBlendAttachmentState>();
foreach (var attachment in renderPass.Attachments)
{
if ((attachment.ImageUsageFlags & VkImageUsageFlags.DepthStencilAttachment) != 0)
{
hasDepthAttachment = true;
continue;
}
colorBlendAttachments.Add(new VkPipelineColorBlendAttachmentState
{
colorWriteMask = (
VkColorComponentFlags.R |
VkColorComponentFlags.G |
VkColorComponentFlags.B |
VkColorComponentFlags.A
),
blendEnable = VkBool32.False,
});
}
var depthStencil = new VkPipelineDepthStencilStateCreateInfo
{
sType = VkStructureType.PipelineDepthStencilStateCreateInfo,
depthTestEnable = VkBool32.True,
depthWriteEnable = VkBool32.True,
depthCompareOp = VkCompareOp.Less,
depthBoundsTestEnable = VkBool32.False,
stencilTestEnable = VkBool32.False,
};
var colorBlending = new VkPipelineColorBlendStateCreateInfo
{
sType = VkStructureType.PipelineColorBlendStateCreateInfo,
logicOpEnable = VkBool32.False,
logicOp = VkLogicOp.Copy,
attachmentCount = colorBlendAttachments.Count,
pAttachments = (VkPipelineColorBlendAttachmentState *)colorBlendAttachments.Data.ToPointer(),
blendConstants_0 = 0.0f,
blendConstants_1 = 0.0f,
blendConstants_2 = 0.0f,
blendConstants_3 = 0.0f
};
var dynamicStates = new NativeList <VkDynamicState>();
dynamicStates.Add(VkDynamicState.Viewport);
dynamicStates.Add(VkDynamicState.Scissor);
dynamicStates.Add(VkDynamicState.LineWidth);
var dynamicStateInfo = new VkPipelineDynamicStateCreateInfo
{
sType = VkStructureType.PipelineDynamicStateCreateInfo,
dynamicStateCount = dynamicStates.Count,
pDynamicStates = (VkDynamicState *)dynamicStates.Data.ToPointer()
};
var shaderInfo = new NativeList <VkPipelineShaderStageCreateInfo>();
foreach (var shader in shaders)
{
shaderInfo.Add(new VkPipelineShaderStageCreateInfo
{
sType = VkStructureType.PipelineShaderStageCreateInfo,
module = shader.Handle,
stage = (VkShaderStageFlags)shader.Type,
pName = GraphicsApiConstants.MAIN
});
}
var pipelineInfo = new VkGraphicsPipelineCreateInfo
{
sType = VkStructureType.GraphicsPipelineCreateInfo,
stageCount = shaderInfo.Count,
pStages = (VkPipelineShaderStageCreateInfo *)shaderInfo.Data.ToPointer(),
pVertexInputState = &vertexInputInfo,
pInputAssemblyState = &inputAssemble,
pViewportState = &viewportState,
pRasterizationState = &rasterizer,
pMultisampleState = &multisampling,
pDepthStencilState = hasDepthAttachment ? &depthStencil : null,
pColorBlendState = &colorBlending,
pDynamicState = &dynamicStateInfo,
layout = _layout,
renderPass = _renderPass.Handle,
subpass = subPass,
basePipelineHandle = VkPipeline.Null,
basePipelineIndex = -1
};
VkPipeline pipeline;
if (VulkanNative.vkCreateGraphicsPipelines(
_device.Handle,
VkPipelineCache.Null,
1,
&pipelineInfo,
null,
&pipeline
) != VkResult.Success)
{
throw new Exception("faield to create graphics pipeline");
}
_handle = pipeline;
}
