为什么这个颜色混合状态无效（Vulkan）
Why is this color blend state invalid (Vulkan)
我正在尝试使用动态渲染制作管道，为此我有这个功能：
vk::UniquePipeline CreateGraphicsPipeline(
vk::Device& device,
Renderer::ShaderProgram& program)
{
const auto& modules = program.GetShaderModules();
const auto& stage_flags = program.GetShaderStageFlags();
const auto& binding_descriptions = program.GetBindingDescriptions();
const auto& attribute_descriptions = program.GetAttributeDescriptions();
const auto& shader_config = program.GetShaderConfig();
Assert(modules.size() == stage_flags.size(), "");
const uint shader_stage_count = stage_flags.size();
Assert(shader_stage_count <= MAXIMUM_SHADER_STAGE_COUNT, "");
std::array<vk::PipelineShaderStageCreateInfo, MAXIMUM_SHADER_STAGE_COUNT> shader_infos;
for(uint i=0; i < shader_stage_count; i++)
{
shader_infos[i].stage = stage_flags[i];
shader_infos[i].module = *modules[i];
shader_infos[i].pName = "main";
}
vk::PipelineVertexInputStateCreateInfo vertexInputInfo{};
vertexInputInfo.vertexAttributeDescriptionCount =
static_cast<uint32_t>(attribute_descriptions.size());
vertexInputInfo.pVertexAttributeDescriptions = attribute_descriptions.data();
vertexInputInfo.vertexBindingDescriptionCount = binding_descriptions.size();
vertexInputInfo.pVertexBindingDescriptions = binding_descriptions.data();
// Select rasterization algorithm and indexed drawing.
vk::PipelineInputAssemblyStateCreateInfo inputAssembly{};
inputAssembly.topology = shader_config.topology;
inputAssembly.primitiveRestartEnable = VK_FALSE;
// Setup rasterization details.
vk::PipelineRasterizationStateCreateInfo rasterizer = {};
rasterizer.depthClampEnable = VK_FALSE;
rasterizer.rasterizerDiscardEnable = VK_TRUE;
rasterizer.polygonMode = shader_config.polygon_mode;
rasterizer.cullMode = shader_config.cull_mode;
rasterizer.frontFace = shader_config.front_face;
rasterizer.depthBiasEnable = VK_FALSE;
rasterizer.depthBiasConstantFactor = 0.0;
rasterizer.depthBiasClamp = 0.0;
rasterizer.depthBiasSlopeFactor = 0.0;
rasterizer.lineWidth = shader_config.line_width;
vk::PipelineMultisampleStateCreateInfo multisampling{};
multisampling.sampleShadingEnable = VK_FALSE;
multisampling.rasterizationSamples = vk::SampleCountFlagBits::e1;
vk::PipelineColorBlendAttachmentState color_blend_attachment{};
color_blend_attachment.colorWriteMask =
vk::ColorComponentFlagBits::eR |
vk::ColorComponentFlagBits::eG |
vk::ColorComponentFlagBits::eB |
vk::ColorComponentFlagBits::eA;
color_blend_attachment.blendEnable = VK_FALSE;
vk::PipelineColorBlendStateCreateInfo color_blending{};
color_blending.logicOpEnable = VK_FALSE;
color_blending.logicOp = vk::LogicOp::eCopy;
color_blending.attachmentCount = 1;
color_blending.pAttachments = &color_blend_attachment;
color_blending.blendConstants[0] = 0.0f;
color_blending.blendConstants[1] = 0.0f;
color_blending.blendConstants[2] = 0.0f;
color_blending.blendConstants[3] = 0.0f;
vk::PipelineLayoutCreateInfo pipelineLayoutInfo{};
pipelineLayoutInfo.setLayoutCount = 0;
pipelineLayoutInfo.pushConstantRangeCount = 0;
auto [result, pipelineLayout] = device.createPipelineLayout(pipelineLayoutInfo);
Assert(result == vk::Result::eSuccess, "");
const std::array<vk::DynamicState, 3> dynamic_state_enables =
{
vk::DynamicState::eViewport,
vk::DynamicState::eScissor,
vk::DynamicState::eLineWidth
};
vk::PipelineDynamicStateCreateInfo dynamic_state = {};
dynamic_state.dynamicStateCount = dynamic_state_enables.size();
dynamic_state.pDynamicStates = dynamic_state_enables.data();
vk::PipelineDepthStencilStateCreateInfo depth_stencil{};
depth_stencil.depthTestEnable = false;
depth_stencil.depthWriteEnable = true;
depth_stencil.depthCompareOp = vk::CompareOp::eAlways;
depth_stencil.depthBoundsTestEnable = false;
depth_stencil.stencilTestEnable = false;
depth_stencil.minDepthBounds = 0.0f;
depth_stencil.maxDepthBounds = 1.0f;
vk::GraphicsPipelineCreateInfo pipelineInfo{};
pipelineInfo.stageCount = shader_stage_count;
pipelineInfo.pStages = shader_infos.data();
pipelineInfo.pVertexInputState = &vertexInputInfo;
pipelineInfo.pInputAssemblyState = &inputAssembly;
pipelineInfo.pViewportState = nullptr; // Handled via dynamic rendering.
pipelineInfo.pRasterizationState = &rasterizer;
pipelineInfo.pMultisampleState = &multisampling;
pipelineInfo.pColorBlendState = &color_blending;
pipelineInfo.layout = pipelineLayout;
pipelineInfo.pDynamicState = &dynamic_state;
pipelineInfo.pDepthStencilState = &depth_stencil;
pipelineInfo.basePipelineHandle = nullptr;
vk::Format format = vk::Format::eR8G8B8A8Unorm;
vk::PipelineRenderingCreateInfo pipeline_rendering_create_info{};
pipeline_rendering_create_info.colorAttachmentCount = 1;
pipeline_rendering_create_info.pColorAttachmentFormats = &format;
pipeline_rendering_create_info.depthAttachmentFormat = vk::Format::eUndefined;
pipeline_rendering_create_info.stencilAttachmentFormat = vk::Format::eUndefined;
pipelineInfo.pNext = &pipeline_rendering_create_info;
auto [result_tmp, graphics_pipeline] =
device.createGraphicsPipelineUnique({}, pipelineInfo);
return std::move(graphics_pipeline);
}
特别是这两个结构：
vk::PipelineColorBlendAttachmentState color_blend_attachment{};
color_blend_attachment.colorWriteMask =
vk::ColorComponentFlagBits::eR |
vk::ColorComponentFlagBits::eG |
vk::ColorComponentFlagBits::eB |
vk::ColorComponentFlagBits::eA;
color_blend_attachment.blendEnable = VK_FALSE;
vk::PipelineColorBlendStateCreateInfo color_blending{};
color_blending.logicOpEnable = VK_FALSE;
color_blending.logicOp = vk::LogicOp::eCopy;
color_blending.attachmentCount = 1;
color_blending.pAttachments = &color_blend_attachment;
color_blending.blendConstants[0] = 0.0f;
color_blending.blendConstants[1] = 0.0f;
color_blending.blendConstants[2] = 0.0f;
color_blending.blendConstants[3] = 0.0f;
我的验证层报告如下：
Message ID name: VUID-VkGraphicsPipelineCreateInfo-renderPass-06054
Message: Validation Error: [ VUID-VkGraphicsPipelineCreateInfo-renderPass-06054 ] Object 0: handle = 0x1f8e280, name = Logical device: NVIDIA GeForce GTX 1070, type = VK_OBJECT_TYPE_DEVICE; | MessageID = 0x6882ec30 | vkCreateGraphicsPipelines(): Pipeline 0 has VkPipelineRenderingCreateInfoKHR::colorAttachmentCount (1) and an invalid pColorBlendState structure The Vulkan spec states: If renderPass is VK_NULL_HANDLE, the pipeline is being created with fragment output interface state, and VkPipelineRenderingCreateInfo::colorAttachmentCount is not equal to 0, pColorBlendState must be a valid pointer to a valid VkPipelineColorBlendStateCreateInfo structure (https://vulkan.lunarg.com/doc/view/1.3.204.1/linux/1.3-extensions/vkspec.html#VUID-VkGraphicsPipelineCreateInfo-renderPass-06054)
Severity: VK_DEBUG_UTILS_MESSAGE_SEVERITY_ERROR_BIT_EXT
这对我来说很奇怪，当我进行非动态渲染时，这些混合状态很好。
使用图层VK_LAYER_LUNARG_api_dump
我将此视为我的管道的创建信息：
vkCreateGraphicsPipelines(device, pipelineCache, createInfoCount, pCreateInfos, pAllocator, pPipelines) returns VkResult VK_SUCCESS (0):
device: VkDevice = 0x128be90 [Logical device: NVIDIA GeForce GTX 1070]
pipelineCache: VkPipelineCache = 0
createInfoCount: uint32_t = 1
pCreateInfos: const VkGraphicsPipelineCreateInfo* = 0x7ffe0575b958
pCreateInfos[0]: const VkGraphicsPipelineCreateInfo = 0x7ffe0575b958:
sType: VkStructureType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO (28)
pNext: const void* = VkPipelineRenderingCreateInfo
flags: VkPipelineCreateFlags = 0
stageCount: uint32_t = 2
pStages: const VkPipelineShaderStageCreateInfo* = 0x7ffe0575bd80
pStages[0]: const VkPipelineShaderStageCreateInfo = 0x7ffe0575bd80:
sType: VkStructureType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO (18)
pNext: const void* = NULL
flags: VkPipelineShaderStageCreateFlags = 0
stage: VkShaderStageFlagBits = 1 (VK_SHADER_STAGE_VERTEX_BIT)
module: VkShaderModule = 0x16bd340
pName: const char* = "main"
pSpecializationInfo: const VkSpecializationInfo* = NULL
pStages[1]: const VkPipelineShaderStageCreateInfo = 0x7ffe0575bdb0:
sType: VkStructureType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO (18)
pNext: const void* = NULL
flags: VkPipelineShaderStageCreateFlags = 0
stage: VkShaderStageFlagBits = 16 (VK_SHADER_STAGE_FRAGMENT_BIT)
module: VkShaderModule = 0x16bdb10
pName: const char* = "main"
pSpecializationInfo: const VkSpecializationInfo* = NULL
pVertexInputState: const VkPipelineVertexInputStateCreateInfo* = 0x7ffe0575bd48:
sType: VkStructureType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO (19)
pNext: const void* = NULL
flags: VkPipelineVertexInputStateCreateFlags = 0
vertexBindingDescriptionCount: uint32_t = 1
pVertexBindingDescriptions: const VkVertexInputBindingDescription* = 0x16bcd90
pVertexBindingDescriptions[0]: const VkVertexInputBindingDescription = 0x16bcd90:
binding: uint32_t = 0
stride: uint32_t = 20
inputRate: VkVertexInputRate = VK_VERTEX_INPUT_RATE_VERTEX (0)
vertexAttributeDescriptionCount: uint32_t = 2
pVertexAttributeDescriptions: const VkVertexInputAttributeDescription* = 0x16b9a30
pVertexAttributeDescriptions[0]: const VkVertexInputAttributeDescription = 0x16b9a30:
location: uint32_t = 0
binding: uint32_t = 0
format: VkFormat = VK_FORMAT_R32G32_SFLOAT (103)
offset: uint32_t = 0
pVertexAttributeDescriptions[1]: const VkVertexInputAttributeDescription = 0x16b9a40:
location: uint32_t = 1
binding: uint32_t = 0
format: VkFormat = VK_FORMAT_R32G32B32_SFLOAT (106)
offset: uint32_t = 8
pInputAssemblyState: const VkPipelineInputAssemblyStateCreateInfo* = 0x7ffe0575bd20:
sType: VkStructureType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO (20)
pNext: const void* = NULL
flags: VkPipelineInputAssemblyStateCreateFlags = 0
topology: VkPrimitiveTopology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST (3)
primitiveRestartEnable: VkBool32 = 0
pTessellationState: const VkPipelineTessellationStateCreateInfo* = NULL
pViewportState: const VkPipelineViewportStateCreateInfo* = NULL
pRasterizationState: const VkPipelineRasterizationStateCreateInfo* = 0x7ffe0575bcd8:
sType: VkStructureType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO (23)
pNext: const void* = NULL
flags: VkPipelineRasterizationStateCreateFlags = 0
depthClampEnable: VkBool32 = 0
rasterizerDiscardEnable: VkBool32 = 1
polygonMode: VkPolygonMode = VK_POLYGON_MODE_FILL (0)
cullMode: VkCullModeFlags = 2 (VK_CULL_MODE_BACK_BIT)
frontFace: VkFrontFace = VK_FRONT_FACE_CLOCKWISE (1)
depthBiasEnable: VkBool32 = 0
depthBiasConstantFactor: float = 0
depthBiasClamp: float = 0
depthBiasSlopeFactor: float = 0
lineWidth: float = 3
pMultisampleState: const VkPipelineMultisampleStateCreateInfo* = 0x7ffe0575bc90:
sType: VkStructureType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO (24)
pNext: const void* = NULL
flags: VkPipelineMultisampleStateCreateFlags = 0
rasterizationSamples: VkSampleCountFlagBits = 1 (VK_SAMPLE_COUNT_1_BIT)
sampleShadingEnable: VkBool32 = 0
minSampleShading: float = 0
pSampleMask: const VkSampleMask* = NULL
alphaToCoverageEnable: VkBool32 = 0
alphaToOneEnable: VkBool32 = 0
pDepthStencilState: const VkPipelineDepthStencilStateCreateInfo* = 0x7ffe0575ba30:
sType: VkStructureType = VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO (25)
pNext: const void* = NULL
flags: VkPipelineDepthStencilStateCreateFlags = 0
depthTestEnable: VkBool32 = 0
depthWriteEnable: VkBool32 = 1
depthCompareOp: VkCompareOp = VK_COMPARE_OP_ALWAYS (7)
depthBoundsTestEnable: VkBool32 = 0
stencilTestEnable: VkBool32 = 0
front: VkStencilOpState = 0x7ffe0575ba58:
failOp: VkStencilOp = VK_STENCIL_OP_KEEP (0)
passOp: VkStencilOp = VK_STENCIL_OP_KEEP (0)
depthFailOp: VkStencilOp = VK_STENCIL_OP_KEEP (0)
compareOp: VkCompareOp = VK_COMPARE_OP_NEVER (0)
compareMask: uint32_t = 0
writeMask: uint32_t = 0
reference: uint32_t = 0
back: VkStencilOpState = 0x7ffe0575ba74:
failOp: VkStencilOp = VK_STENCIL_OP_KEEP (0)
passOp: VkStencilOp = VK_STENCIL_OP_KEEP (0)
depthFailOp: VkStencilOp = VK_STENCIL_OP_KEEP (0)
compareOp: VkCompareOp = VK_COMPARE_OP_NEVER (0)
compareMask: uint32_t = 0
writeMask: uint32_t = 0
reference: uint32_t = 0
minDepthBounds: float = 0
maxDepthBounds: float = 1
pColorBlendState: const VkPipelineColorBlendStateCreateInfo* = 0x7ffe0575bc00:
sType: VkStructureType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO (26)
pNext: const void* = NULL
flags: VkPipelineColorBlendStateCreateFlags = 0
logicOpEnable: VkBool32 = 0
logicOp: VkLogicOp = VK_LOGIC_OP_COPY (3)
attachmentCount: uint32_t = 1
pAttachments: const VkPipelineColorBlendAttachmentState* = 0x7ffe0575bc68
pAttachments[0]: const VkPipelineColorBlendAttachmentState = 0x7ffe0575bc68:
blendEnable: VkBool32 = 0
srcColorBlendFactor: VkBlendFactor = VK_BLEND_FACTOR_ZERO (0)
dstColorBlendFactor: VkBlendFactor = VK_BLEND_FACTOR_ZERO (0)
colorBlendOp: VkBlendOp = VK_BLEND_OP_ADD (0)
srcAlphaBlendFactor: VkBlendFactor = VK_BLEND_FACTOR_ZERO (0)
dstAlphaBlendFactor: VkBlendFactor = VK_BLEND_FACTOR_ZERO (0)
alphaBlendOp: VkBlendOp = VK_BLEND_OP_ADD (0)
colorWriteMask: VkColorComponentFlags = 15 (VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT)
blendConstants: float[4] = 0x7ffe0575bc28
blendConstants[0]: float = 0
blendConstants[1]: float = 0
blendConstants[2]: float = 0
blendConstants[3]: float = 0
pDynamicState: const VkPipelineDynamicStateCreateInfo* = 0x7ffe0575baa0:
sType: VkStructureType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO (27)
pNext: const void* = NULL
flags: VkPipelineDynamicStateCreateFlags = 0
dynamicStateCount: uint32_t = 3
pDynamicStates: const VkDynamicState* = 0x7ffe0575bac0
pDynamicStates[0]: const VkDynamicState = VK_DYNAMIC_STATE_VIEWPORT (0)
pDynamicStates[1]: const VkDynamicState = VK_DYNAMIC_STATE_SCISSOR (1)
pDynamicStates[2]: const VkDynamicState = VK_DYNAMIC_STATE_LINE_WIDTH (2)
layout: VkPipelineLayout = 0x16bf960
renderPass: VkRenderPass = 0
subpass: uint32_t = 0
basePipelineHandle: VkPipeline = 0
basePipelineIndex: int32_t = 0
pNext: VkPipelineRenderingCreateInfo = 0x7ffe0575b908:
sType: VkStructureType = VK_STRUCTURE_TYPE_PIPELINE_RENDERING_CREATE_INFO (1000044002)
pNext: const void* = NULL
viewMask: uint32_t = 0
colorAttachmentCount: uint32_t = 1
pColorAttachmentFormats: const VkFormat* = 0x7ffe0575b934
pColorAttachmentFormats[0]: const VkFormat = VK_FORMAT_R8G8B8A8_UNORM (37)
depthAttachmentFormat: VkFormat = VK_FORMAT_UNDEFINED (0)
stencilAttachmentFormat: VkFormat = VK_FORMAT_UNDEFINED (0)
pAllocator: const VkAllocationCallbacks* = NULL
pPipelines: VkPipeline* = 0x7ffe0575c138
pPipelines[0]: VkPipeline = 0x16be210
据我所知，从 gdb 可以看出指针 pColorBlendState 没问题。
它正在层中得到修复，因此希望它会在 Vulkan SDK 的某些后续版本中得到修复。
同时我认为删除片段着色器或 rasterizerDiscardEnable = VK_FALSE 应该消除错误。
我正在尝试使用动态渲染制作管道，为此我有这个功能：
vk::UniquePipeline CreateGraphicsPipeline(
vk::Device& device,
Renderer::ShaderProgram& program)
{
const auto& modules = program.GetShaderModules();
const auto& stage_flags = program.GetShaderStageFlags();
const auto& binding_descriptions = program.GetBindingDescriptions();
const auto& attribute_descriptions = program.GetAttributeDescriptions();
const auto& shader_config = program.GetShaderConfig();
Assert(modules.size() == stage_flags.size(), "");
const uint shader_stage_count = stage_flags.size();
Assert(shader_stage_count <= MAXIMUM_SHADER_STAGE_COUNT, "");
std::array<vk::PipelineShaderStageCreateInfo, MAXIMUM_SHADER_STAGE_COUNT> shader_infos;
for(uint i=0; i < shader_stage_count; i++)
{
shader_infos[i].stage = stage_flags[i];
shader_infos[i].module = *modules[i];
shader_infos[i].pName = "main";
}
vk::PipelineVertexInputStateCreateInfo vertexInputInfo{};
vertexInputInfo.vertexAttributeDescriptionCount =
static_cast<uint32_t>(attribute_descriptions.size());
vertexInputInfo.pVertexAttributeDescriptions = attribute_descriptions.data();
vertexInputInfo.vertexBindingDescriptionCount = binding_descriptions.size();
vertexInputInfo.pVertexBindingDescriptions = binding_descriptions.data();
// Select rasterization algorithm and indexed drawing.
vk::PipelineInputAssemblyStateCreateInfo inputAssembly{};
inputAssembly.topology = shader_config.topology;
inputAssembly.primitiveRestartEnable = VK_FALSE;
// Setup rasterization details.
vk::PipelineRasterizationStateCreateInfo rasterizer = {};
rasterizer.depthClampEnable = VK_FALSE;
rasterizer.rasterizerDiscardEnable = VK_TRUE;
rasterizer.polygonMode = shader_config.polygon_mode;
rasterizer.cullMode = shader_config.cull_mode;
rasterizer.frontFace = shader_config.front_face;
rasterizer.depthBiasEnable = VK_FALSE;
rasterizer.depthBiasConstantFactor = 0.0;
rasterizer.depthBiasClamp = 0.0;
rasterizer.depthBiasSlopeFactor = 0.0;
rasterizer.lineWidth = shader_config.line_width;
vk::PipelineMultisampleStateCreateInfo multisampling{};
multisampling.sampleShadingEnable = VK_FALSE;
multisampling.rasterizationSamples = vk::SampleCountFlagBits::e1;
vk::PipelineColorBlendAttachmentState color_blend_attachment{};
color_blend_attachment.colorWriteMask =
vk::ColorComponentFlagBits::eR |
vk::ColorComponentFlagBits::eG |
vk::ColorComponentFlagBits::eB |
vk::ColorComponentFlagBits::eA;
color_blend_attachment.blendEnable = VK_FALSE;
vk::PipelineColorBlendStateCreateInfo color_blending{};
color_blending.logicOpEnable = VK_FALSE;
color_blending.logicOp = vk::LogicOp::eCopy;
color_blending.attachmentCount = 1;
color_blending.pAttachments = &color_blend_attachment;
color_blending.blendConstants[0] = 0.0f;
color_blending.blendConstants[1] = 0.0f;
color_blending.blendConstants[2] = 0.0f;
color_blending.blendConstants[3] = 0.0f;
vk::PipelineLayoutCreateInfo pipelineLayoutInfo{};
pipelineLayoutInfo.setLayoutCount = 0;
pipelineLayoutInfo.pushConstantRangeCount = 0;
auto [result, pipelineLayout] = device.createPipelineLayout(pipelineLayoutInfo);
Assert(result == vk::Result::eSuccess, "");
const std::array<vk::DynamicState, 3> dynamic_state_enables =
{
vk::DynamicState::eViewport,
vk::DynamicState::eScissor,
vk::DynamicState::eLineWidth
};
vk::PipelineDynamicStateCreateInfo dynamic_state = {};
dynamic_state.dynamicStateCount = dynamic_state_enables.size();
dynamic_state.pDynamicStates = dynamic_state_enables.data();
vk::PipelineDepthStencilStateCreateInfo depth_stencil{};
depth_stencil.depthTestEnable = false;
depth_stencil.depthWriteEnable = true;
depth_stencil.depthCompareOp = vk::CompareOp::eAlways;
depth_stencil.depthBoundsTestEnable = false;
depth_stencil.stencilTestEnable = false;
depth_stencil.minDepthBounds = 0.0f;
depth_stencil.maxDepthBounds = 1.0f;
vk::GraphicsPipelineCreateInfo pipelineInfo{};
pipelineInfo.stageCount = shader_stage_count;
pipelineInfo.pStages = shader_infos.data();
pipelineInfo.pVertexInputState = &vertexInputInfo;
pipelineInfo.pInputAssemblyState = &inputAssembly;
pipelineInfo.pViewportState = nullptr; // Handled via dynamic rendering.
pipelineInfo.pRasterizationState = &rasterizer;
pipelineInfo.pMultisampleState = &multisampling;
pipelineInfo.pColorBlendState = &color_blending;
pipelineInfo.layout = pipelineLayout;
pipelineInfo.pDynamicState = &dynamic_state;
pipelineInfo.pDepthStencilState = &depth_stencil;
pipelineInfo.basePipelineHandle = nullptr;
vk::Format format = vk::Format::eR8G8B8A8Unorm;
vk::PipelineRenderingCreateInfo pipeline_rendering_create_info{};
pipeline_rendering_create_info.colorAttachmentCount = 1;
pipeline_rendering_create_info.pColorAttachmentFormats = &format;
pipeline_rendering_create_info.depthAttachmentFormat = vk::Format::eUndefined;
pipeline_rendering_create_info.stencilAttachmentFormat = vk::Format::eUndefined;
pipelineInfo.pNext = &pipeline_rendering_create_info;
auto [result_tmp, graphics_pipeline] =
device.createGraphicsPipelineUnique({}, pipelineInfo);
return std::move(graphics_pipeline);
}
特别是这两个结构：
vk::PipelineColorBlendAttachmentState color_blend_attachment{};
color_blend_attachment.colorWriteMask =
vk::ColorComponentFlagBits::eR |
vk::ColorComponentFlagBits::eG |
vk::ColorComponentFlagBits::eB |
vk::ColorComponentFlagBits::eA;
color_blend_attachment.blendEnable = VK_FALSE;
vk::PipelineColorBlendStateCreateInfo color_blending{};
color_blending.logicOpEnable = VK_FALSE;
color_blending.logicOp = vk::LogicOp::eCopy;
color_blending.attachmentCount = 1;
color_blending.pAttachments = &color_blend_attachment;
color_blending.blendConstants[0] = 0.0f;
color_blending.blendConstants[1] = 0.0f;
color_blending.blendConstants[2] = 0.0f;
color_blending.blendConstants[3] = 0.0f;
我的验证层报告如下：
Message ID name: VUID-VkGraphicsPipelineCreateInfo-renderPass-06054
Message: Validation Error: [ VUID-VkGraphicsPipelineCreateInfo-renderPass-06054 ] Object 0: handle = 0x1f8e280, name = Logical device: NVIDIA GeForce GTX 1070, type = VK_OBJECT_TYPE_DEVICE; | MessageID = 0x6882ec30 | vkCreateGraphicsPipelines(): Pipeline 0 has VkPipelineRenderingCreateInfoKHR::colorAttachmentCount (1) and an invalid pColorBlendState structure The Vulkan spec states: If renderPass is VK_NULL_HANDLE, the pipeline is being created with fragment output interface state, and VkPipelineRenderingCreateInfo::colorAttachmentCount is not equal to 0, pColorBlendState must be a valid pointer to a valid VkPipelineColorBlendStateCreateInfo structure (https://vulkan.lunarg.com/doc/view/1.3.204.1/linux/1.3-extensions/vkspec.html#VUID-VkGraphicsPipelineCreateInfo-renderPass-06054)
Severity: VK_DEBUG_UTILS_MESSAGE_SEVERITY_ERROR_BIT_EXT
这对我来说很奇怪，当我进行非动态渲染时，这些混合状态很好。
使用图层VK_LAYER_LUNARG_api_dump
我将此视为我的管道的创建信息：
vkCreateGraphicsPipelines(device, pipelineCache, createInfoCount, pCreateInfos, pAllocator, pPipelines) returns VkResult VK_SUCCESS (0):
device: VkDevice = 0x128be90 [Logical device: NVIDIA GeForce GTX 1070]
pipelineCache: VkPipelineCache = 0
createInfoCount: uint32_t = 1
pCreateInfos: const VkGraphicsPipelineCreateInfo* = 0x7ffe0575b958
pCreateInfos[0]: const VkGraphicsPipelineCreateInfo = 0x7ffe0575b958:
sType: VkStructureType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO (28)
pNext: const void* = VkPipelineRenderingCreateInfo
flags: VkPipelineCreateFlags = 0
stageCount: uint32_t = 2
pStages: const VkPipelineShaderStageCreateInfo* = 0x7ffe0575bd80
pStages[0]: const VkPipelineShaderStageCreateInfo = 0x7ffe0575bd80:
sType: VkStructureType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO (18)
pNext: const void* = NULL
flags: VkPipelineShaderStageCreateFlags = 0
stage: VkShaderStageFlagBits = 1 (VK_SHADER_STAGE_VERTEX_BIT)
module: VkShaderModule = 0x16bd340
pName: const char* = "main"
pSpecializationInfo: const VkSpecializationInfo* = NULL
pStages[1]: const VkPipelineShaderStageCreateInfo = 0x7ffe0575bdb0:
sType: VkStructureType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO (18)
pNext: const void* = NULL
flags: VkPipelineShaderStageCreateFlags = 0
stage: VkShaderStageFlagBits = 16 (VK_SHADER_STAGE_FRAGMENT_BIT)
module: VkShaderModule = 0x16bdb10
pName: const char* = "main"
pSpecializationInfo: const VkSpecializationInfo* = NULL
pVertexInputState: const VkPipelineVertexInputStateCreateInfo* = 0x7ffe0575bd48:
sType: VkStructureType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO (19)
pNext: const void* = NULL
flags: VkPipelineVertexInputStateCreateFlags = 0
vertexBindingDescriptionCount: uint32_t = 1
pVertexBindingDescriptions: const VkVertexInputBindingDescription* = 0x16bcd90
pVertexBindingDescriptions[0]: const VkVertexInputBindingDescription = 0x16bcd90:
binding: uint32_t = 0
stride: uint32_t = 20
inputRate: VkVertexInputRate = VK_VERTEX_INPUT_RATE_VERTEX (0)
vertexAttributeDescriptionCount: uint32_t = 2
pVertexAttributeDescriptions: const VkVertexInputAttributeDescription* = 0x16b9a30
pVertexAttributeDescriptions[0]: const VkVertexInputAttributeDescription = 0x16b9a30:
location: uint32_t = 0
binding: uint32_t = 0
format: VkFormat = VK_FORMAT_R32G32_SFLOAT (103)
offset: uint32_t = 0
pVertexAttributeDescriptions[1]: const VkVertexInputAttributeDescription = 0x16b9a40:
location: uint32_t = 1
binding: uint32_t = 0
format: VkFormat = VK_FORMAT_R32G32B32_SFLOAT (106)
offset: uint32_t = 8
pInputAssemblyState: const VkPipelineInputAssemblyStateCreateInfo* = 0x7ffe0575bd20:
sType: VkStructureType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO (20)
pNext: const void* = NULL
flags: VkPipelineInputAssemblyStateCreateFlags = 0
topology: VkPrimitiveTopology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST (3)
primitiveRestartEnable: VkBool32 = 0
pTessellationState: const VkPipelineTessellationStateCreateInfo* = NULL
pViewportState: const VkPipelineViewportStateCreateInfo* = NULL
pRasterizationState: const VkPipelineRasterizationStateCreateInfo* = 0x7ffe0575bcd8:
sType: VkStructureType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO (23)
pNext: const void* = NULL
flags: VkPipelineRasterizationStateCreateFlags = 0
depthClampEnable: VkBool32 = 0
rasterizerDiscardEnable: VkBool32 = 1
polygonMode: VkPolygonMode = VK_POLYGON_MODE_FILL (0)
cullMode: VkCullModeFlags = 2 (VK_CULL_MODE_BACK_BIT)
frontFace: VkFrontFace = VK_FRONT_FACE_CLOCKWISE (1)
depthBiasEnable: VkBool32 = 0
depthBiasConstantFactor: float = 0
depthBiasClamp: float = 0
depthBiasSlopeFactor: float = 0
lineWidth: float = 3
pMultisampleState: const VkPipelineMultisampleStateCreateInfo* = 0x7ffe0575bc90:
sType: VkStructureType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO (24)
pNext: const void* = NULL
flags: VkPipelineMultisampleStateCreateFlags = 0
rasterizationSamples: VkSampleCountFlagBits = 1 (VK_SAMPLE_COUNT_1_BIT)
sampleShadingEnable: VkBool32 = 0
minSampleShading: float = 0
pSampleMask: const VkSampleMask* = NULL
alphaToCoverageEnable: VkBool32 = 0
alphaToOneEnable: VkBool32 = 0
pDepthStencilState: const VkPipelineDepthStencilStateCreateInfo* = 0x7ffe0575ba30:
sType: VkStructureType = VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO (25)
pNext: const void* = NULL
flags: VkPipelineDepthStencilStateCreateFlags = 0
depthTestEnable: VkBool32 = 0
depthWriteEnable: VkBool32 = 1
depthCompareOp: VkCompareOp = VK_COMPARE_OP_ALWAYS (7)
depthBoundsTestEnable: VkBool32 = 0
stencilTestEnable: VkBool32 = 0
front: VkStencilOpState = 0x7ffe0575ba58:
failOp: VkStencilOp = VK_STENCIL_OP_KEEP (0)
passOp: VkStencilOp = VK_STENCIL_OP_KEEP (0)
depthFailOp: VkStencilOp = VK_STENCIL_OP_KEEP (0)
compareOp: VkCompareOp = VK_COMPARE_OP_NEVER (0)
compareMask: uint32_t = 0
writeMask: uint32_t = 0
reference: uint32_t = 0
back: VkStencilOpState = 0x7ffe0575ba74:
failOp: VkStencilOp = VK_STENCIL_OP_KEEP (0)
passOp: VkStencilOp = VK_STENCIL_OP_KEEP (0)
depthFailOp: VkStencilOp = VK_STENCIL_OP_KEEP (0)
compareOp: VkCompareOp = VK_COMPARE_OP_NEVER (0)
compareMask: uint32_t = 0
writeMask: uint32_t = 0
reference: uint32_t = 0
minDepthBounds: float = 0
maxDepthBounds: float = 1
pColorBlendState: const VkPipelineColorBlendStateCreateInfo* = 0x7ffe0575bc00:
sType: VkStructureType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO (26)
pNext: const void* = NULL
flags: VkPipelineColorBlendStateCreateFlags = 0
logicOpEnable: VkBool32 = 0
logicOp: VkLogicOp = VK_LOGIC_OP_COPY (3)
attachmentCount: uint32_t = 1
pAttachments: const VkPipelineColorBlendAttachmentState* = 0x7ffe0575bc68
pAttachments[0]: const VkPipelineColorBlendAttachmentState = 0x7ffe0575bc68:
blendEnable: VkBool32 = 0
srcColorBlendFactor: VkBlendFactor = VK_BLEND_FACTOR_ZERO (0)
dstColorBlendFactor: VkBlendFactor = VK_BLEND_FACTOR_ZERO (0)
colorBlendOp: VkBlendOp = VK_BLEND_OP_ADD (0)
srcAlphaBlendFactor: VkBlendFactor = VK_BLEND_FACTOR_ZERO (0)
dstAlphaBlendFactor: VkBlendFactor = VK_BLEND_FACTOR_ZERO (0)
alphaBlendOp: VkBlendOp = VK_BLEND_OP_ADD (0)
colorWriteMask: VkColorComponentFlags = 15 (VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT)
blendConstants: float[4] = 0x7ffe0575bc28
blendConstants[0]: float = 0
blendConstants[1]: float = 0
blendConstants[2]: float = 0
blendConstants[3]: float = 0
pDynamicState: const VkPipelineDynamicStateCreateInfo* = 0x7ffe0575baa0:
sType: VkStructureType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO (27)
pNext: const void* = NULL
flags: VkPipelineDynamicStateCreateFlags = 0
dynamicStateCount: uint32_t = 3
pDynamicStates: const VkDynamicState* = 0x7ffe0575bac0
pDynamicStates[0]: const VkDynamicState = VK_DYNAMIC_STATE_VIEWPORT (0)
pDynamicStates[1]: const VkDynamicState = VK_DYNAMIC_STATE_SCISSOR (1)
pDynamicStates[2]: const VkDynamicState = VK_DYNAMIC_STATE_LINE_WIDTH (2)
layout: VkPipelineLayout = 0x16bf960
renderPass: VkRenderPass = 0
subpass: uint32_t = 0
basePipelineHandle: VkPipeline = 0
basePipelineIndex: int32_t = 0
pNext: VkPipelineRenderingCreateInfo = 0x7ffe0575b908:
sType: VkStructureType = VK_STRUCTURE_TYPE_PIPELINE_RENDERING_CREATE_INFO (1000044002)
pNext: const void* = NULL
viewMask: uint32_t = 0
colorAttachmentCount: uint32_t = 1
pColorAttachmentFormats: const VkFormat* = 0x7ffe0575b934
pColorAttachmentFormats[0]: const VkFormat = VK_FORMAT_R8G8B8A8_UNORM (37)
depthAttachmentFormat: VkFormat = VK_FORMAT_UNDEFINED (0)
stencilAttachmentFormat: VkFormat = VK_FORMAT_UNDEFINED (0)
pAllocator: const VkAllocationCallbacks* = NULL
pPipelines: VkPipeline* = 0x7ffe0575c138
pPipelines[0]: VkPipeline = 0x16be210
据我所知，从 gdb 可以看出指针 pColorBlendState 没问题。
它正在层中得到修复，因此希望它会在 Vulkan SDK 的某些后续版本中得到修复。
同时我认为删除片段着色器或 rasterizerDiscardEnable = VK_FALSE 应该消除错误。