public DescriptorSetLayoutCreateInfo
(
StructureType?sType = StructureType.DescriptorSetLayoutCreateInfo,
void *pNext = null,
DescriptorSetLayoutCreateFlags?flags = null,
uint?bindingCount = null,
DescriptorSetLayoutBinding *pBindings = null
) : this()
{
if (sType is not null)
{
SType = sType.Value;
}
if (pNext is not null)
{
PNext = pNext;
}
if (flags is not null)
{
Flags = flags.Value;
}
if (bindingCount is not null)
{
BindingCount = bindingCount.Value;
}
if (pBindings is not null)
{
PBindings = pBindings;
}
}
public unsafe void CreateLayout()
{
Device device = _renderer.Params.Device;
AllocationCallbacks *allocator = (AllocationCallbacks *)_renderer.Params.AllocationCallbacks.ToPointer();
Vk vk = _renderer.Vk;
DescriptorSetLayoutBinding *descriptorSetLayoutBindings = stackalloc DescriptorSetLayoutBinding[]
{
new DescriptorSetLayoutBinding() // vertex binding
{
Binding = 0,
DescriptorCount = 1,
DescriptorType = DescriptorType.UniformBuffer,
PImmutableSamplers = null,
StageFlags = ShaderStageFlags.ShaderStageVertexBit
},
new DescriptorSetLayoutBinding() // fragment binding
{
Binding = 1,
DescriptorCount = 1,
DescriptorType = DescriptorType.UniformBuffer,
PImmutableSamplers = null,
StageFlags = ShaderStageFlags.ShaderStageFragmentBit
},
new DescriptorSetLayoutBinding() // image sampler(2D)
{
Binding = 2,
DescriptorCount = 1,
DescriptorType = DescriptorType.CombinedImageSampler,
PImmutableSamplers = null,
StageFlags = ShaderStageFlags.ShaderStageFragmentBit
}
};
DescriptorSetLayoutCreateInfo descriptorSetLayoutCreateInfo = new()
{
SType = StructureType.DescriptorSetLayoutCreateInfo,
BindingCount = 3, // FIXME: 3 - vertex, fragment and image
PBindings = descriptorSetLayoutBindings
};
_renderer.AssertVulkan(vk.CreateDescriptorSetLayout(device, descriptorSetLayoutCreateInfo, allocator, out _descriptorSetLayout));
PipelineLayoutCreateInfo pipelineLayoutCreateInfo = new()
{
SType = StructureType.PipelineLayoutCreateInfo,
PushConstantRangeCount = 0,
PPushConstantRanges = null,
SetLayoutCount = 1,
};
fixed(DescriptorSetLayout *ptr = &_descriptorSetLayout)
{
pipelineLayoutCreateInfo.PSetLayouts = ptr;
}
_renderer.AssertVulkan(vk.CreatePipelineLayout(device, pipelineLayoutCreateInfo, allocator, out _pipelineLayout));
}
protected override unsafe DescriptorSetLayout[] CreateDescriptorSetLayouts(VulkanGraphicsDevice gd, Device device, out PipelineLayout layout)
{
DescriptorSetLayoutBinding *uLayoutBindings = stackalloc DescriptorSetLayoutBinding[Constants.MaxUniformBufferBindings];
DescriptorSetLayoutBinding *sLayoutBindings = stackalloc DescriptorSetLayoutBinding[Constants.MaxStorageBufferBindings];
DescriptorSetLayoutBinding *tLayoutBindings = stackalloc DescriptorSetLayoutBinding[Constants.MaxTextureBindings];
DescriptorSetLayoutBinding *iLayoutBindings = stackalloc DescriptorSetLayoutBinding[Constants.MaxImageBindings];
DescriptorSetLayoutBinding *bTLayoutBindings = stackalloc DescriptorSetLayoutBinding[Constants.MaxTextureBindings];
DescriptorSetLayoutBinding *bILayoutBindings = stackalloc DescriptorSetLayoutBinding[Constants.MaxImageBindings];
DescriptorBindingFlags *pUBindingsFlags = stackalloc DescriptorBindingFlags[Constants.MaxUniformBufferBindings];
DescriptorBindingFlags *pSBindingsFlags = stackalloc DescriptorBindingFlags[Constants.MaxStorageBufferBindings];
DescriptorBindingFlags *pTBindingsFlags = stackalloc DescriptorBindingFlags[Constants.MaxTextureBindings];
DescriptorBindingFlags *pIBindingsFlags = stackalloc DescriptorBindingFlags[Constants.MaxImageBindings];
DescriptorBindingFlags *pBTBindingsFlags = stackalloc DescriptorBindingFlags[Constants.MaxTextureBindings];
DescriptorBindingFlags *pBIBindingsFlags = stackalloc DescriptorBindingFlags[Constants.MaxImageBindings];
public DescriptorSetLayoutCreateInfo
(
StructureType sType = StructureType.DescriptorSetLayoutCreateInfo,
void *pNext = default,
DescriptorSetLayoutCreateFlags flags = default,
uint bindingCount = default,
DescriptorSetLayoutBinding *pBindings = default
)
{
SType = sType;
PNext = pNext;
Flags = flags;
BindingCount = bindingCount;
PBindings = pBindings;
}
public static unsafe DescriptorSetLayout[] Create(VulkanGraphicsDevice gd, Device device, uint stages, out PipelineLayout layout)
{
int stagesCount = BitOperations.PopCount(stages);
int uCount = Constants.MaxUniformBuffersPerStage * stagesCount + 1;
int tCount = Constants.MaxTexturesPerStage * stagesCount;
int iCount = Constants.MaxImagesPerStage * stagesCount;
int bTCount = tCount;
int bICount = iCount;
DescriptorSetLayoutBinding *uLayoutBindings = stackalloc DescriptorSetLayoutBinding[uCount];
DescriptorSetLayoutBinding *sLayoutBindings = stackalloc DescriptorSetLayoutBinding[stagesCount];
DescriptorSetLayoutBinding *tLayoutBindings = stackalloc DescriptorSetLayoutBinding[tCount];
DescriptorSetLayoutBinding *iLayoutBindings = stackalloc DescriptorSetLayoutBinding[iCount];
DescriptorSetLayoutBinding *bTLayoutBindings = stackalloc DescriptorSetLayoutBinding[bTCount];
DescriptorSetLayoutBinding *bILayoutBindings = stackalloc DescriptorSetLayoutBinding[bICount];
uLayoutBindings[0] = new DescriptorSetLayoutBinding
{
Binding = 0,
DescriptorType = DescriptorType.UniformBuffer,
DescriptorCount = 1,
StageFlags = ShaderStageFlags.ShaderStageFragmentBit | ShaderStageFlags.ShaderStageComputeBit
};
int iter = 0;
while (stages != 0)
{
int stage = BitOperations.TrailingZeroCount(stages);
stages &= ~(1u << stage);
var stageFlags = stage switch
{
1 => ShaderStageFlags.ShaderStageFragmentBit,
2 => ShaderStageFlags.ShaderStageGeometryBit,
3 => ShaderStageFlags.ShaderStageTessellationControlBit,
4 => ShaderStageFlags.ShaderStageTessellationEvaluationBit,
_ => ShaderStageFlags.ShaderStageVertexBit | ShaderStageFlags.ShaderStageComputeBit
};
void Set(DescriptorSetLayoutBinding *bindings, int maxPerStage, DescriptorType type, int start = 0)
{
for (int i = 0; i < maxPerStage; i++)
{
bindings[start + iter * maxPerStage + i] = new DescriptorSetLayoutBinding
{
Binding = (uint)(start + stage * maxPerStage + i),
DescriptorType = type,
DescriptorCount = 1,
StageFlags = stageFlags
};
}
}
void SetStorage(DescriptorSetLayoutBinding *bindings, int maxPerStage, int start = 0)
{
bindings[start + iter] = new DescriptorSetLayoutBinding
{
Binding = (uint)(start + stage * maxPerStage),
DescriptorType = DescriptorType.StorageBuffer,
DescriptorCount = (uint)maxPerStage,
StageFlags = stageFlags
};
}
Set(uLayoutBindings, Constants.MaxUniformBuffersPerStage, DescriptorType.UniformBuffer, 1);
SetStorage(sLayoutBindings, Constants.MaxStorageBuffersPerStage);
Set(tLayoutBindings, Constants.MaxTexturesPerStage, DescriptorType.CombinedImageSampler);
Set(iLayoutBindings, Constants.MaxImagesPerStage, DescriptorType.StorageImage);
Set(bTLayoutBindings, Constants.MaxTexturesPerStage, DescriptorType.UniformTexelBuffer);
Set(bILayoutBindings, Constants.MaxImagesPerStage, DescriptorType.StorageTexelBuffer);
iter++;
}
DescriptorSetLayout[] layouts = new DescriptorSetLayout[PipelineFull.DescriptorSetLayouts];
var uDescriptorSetLayoutCreateInfo = new DescriptorSetLayoutCreateInfo()
{
SType = StructureType.DescriptorSetLayoutCreateInfo,
PBindings = uLayoutBindings,
BindingCount = (uint)uCount
};
var sDescriptorSetLayoutCreateInfo = new DescriptorSetLayoutCreateInfo()
{
SType = StructureType.DescriptorSetLayoutCreateInfo,
PBindings = sLayoutBindings,
BindingCount = (uint)stagesCount
};
var tDescriptorSetLayoutCreateInfo = new DescriptorSetLayoutCreateInfo()
{
SType = StructureType.DescriptorSetLayoutCreateInfo,
PBindings = tLayoutBindings,
BindingCount = (uint)tCount
};
var iDescriptorSetLayoutCreateInfo = new DescriptorSetLayoutCreateInfo()
{
SType = StructureType.DescriptorSetLayoutCreateInfo,
PBindings = iLayoutBindings,
BindingCount = (uint)iCount
};
var bTDescriptorSetLayoutCreateInfo = new DescriptorSetLayoutCreateInfo()
{
SType = StructureType.DescriptorSetLayoutCreateInfo,
PBindings = bTLayoutBindings,
BindingCount = (uint)bTCount
};
var bIDescriptorSetLayoutCreateInfo = new DescriptorSetLayoutCreateInfo()
{
SType = StructureType.DescriptorSetLayoutCreateInfo,
PBindings = bILayoutBindings,
BindingCount = (uint)bICount
};
gd.Api.CreateDescriptorSetLayout(device, uDescriptorSetLayoutCreateInfo, null, out layouts[PipelineFull.UniformSetIndex]).ThrowOnError();
gd.Api.CreateDescriptorSetLayout(device, sDescriptorSetLayoutCreateInfo, null, out layouts[PipelineFull.StorageSetIndex]).ThrowOnError();
gd.Api.CreateDescriptorSetLayout(device, tDescriptorSetLayoutCreateInfo, null, out layouts[PipelineFull.TextureSetIndex]).ThrowOnError();
gd.Api.CreateDescriptorSetLayout(device, iDescriptorSetLayoutCreateInfo, null, out layouts[PipelineFull.ImageSetIndex]).ThrowOnError();
gd.Api.CreateDescriptorSetLayout(device, bTDescriptorSetLayoutCreateInfo, null, out layouts[PipelineFull.BufferTextureSetIndex]).ThrowOnError();
gd.Api.CreateDescriptorSetLayout(device, bIDescriptorSetLayoutCreateInfo, null, out layouts[PipelineFull.BufferImageSetIndex]).ThrowOnError();
fixed(DescriptorSetLayout *pLayouts = layouts)
{
var pipelineLayoutCreateInfo = new PipelineLayoutCreateInfo()
{
SType = StructureType.PipelineLayoutCreateInfo,
PSetLayouts = pLayouts,
SetLayoutCount = PipelineFull.DescriptorSetLayouts
};
gd.Api.CreatePipelineLayout(device, &pipelineLayoutCreateInfo, null, out layout).ThrowOnError();
}
return(layouts);
}
}
public static unsafe DescriptorSetLayout[] CreateMinimal(VulkanRenderer gd, Device device, ShaderSource[] shaders, out PipelineLayout layout)
{
int stagesCount = shaders.Length;
int uCount = 0;
int tCount = 0;
int iCount = 0;
foreach (var shader in shaders)
{
uCount += shader.Bindings.UniformBufferBindings.Count;
tCount += shader.Bindings.TextureBindings.Count;
iCount += shader.Bindings.ImageBindings.Count;
}
DescriptorSetLayoutBinding *uLayoutBindings = stackalloc DescriptorSetLayoutBinding[uCount];
DescriptorSetLayoutBinding *sLayoutBindings = stackalloc DescriptorSetLayoutBinding[stagesCount];
DescriptorSetLayoutBinding *tLayoutBindings = stackalloc DescriptorSetLayoutBinding[tCount];
DescriptorSetLayoutBinding *iLayoutBindings = stackalloc DescriptorSetLayoutBinding[iCount];
int uIndex = 0;
int sIndex = 0;
int tIndex = 0;
int iIndex = 0;
foreach (var shader in shaders)
{
var stageFlags = shader.Stage.Convert();
void Set(DescriptorSetLayoutBinding *bindings, DescriptorType type, ref int start, IEnumerable <int> bds)
{
foreach (var b in bds)
{
bindings[start++] = new DescriptorSetLayoutBinding
{
Binding = (uint)b,
DescriptorType = type,
DescriptorCount = 1,
StageFlags = stageFlags
};
}
}
void SetStorage(DescriptorSetLayoutBinding *bindings, ref int start, int count)
{
bindings[start++] = new DescriptorSetLayoutBinding
{
Binding = (uint)start,
DescriptorType = DescriptorType.StorageBuffer,
DescriptorCount = (uint)count,
StageFlags = stageFlags
};
}
// TODO: Support buffer textures and images here.
// This is only used for the helper shaders on the backend, and we don't use buffer textures on them
// so far, so it's not really necessary right now.
Set(uLayoutBindings, DescriptorType.UniformBuffer, ref uIndex, shader.Bindings.UniformBufferBindings);
SetStorage(sLayoutBindings, ref sIndex, shader.Bindings.StorageBufferBindings.Count);
Set(tLayoutBindings, DescriptorType.CombinedImageSampler, ref tIndex, shader.Bindings.TextureBindings);
Set(iLayoutBindings, DescriptorType.StorageImage, ref iIndex, shader.Bindings.ImageBindings);
}
DescriptorSetLayout[] layouts = new DescriptorSetLayout[PipelineFull.DescriptorSetLayouts];
var uDescriptorSetLayoutCreateInfo = new DescriptorSetLayoutCreateInfo()
{
SType = StructureType.DescriptorSetLayoutCreateInfo,
PBindings = uLayoutBindings,
BindingCount = (uint)uCount
};
var sDescriptorSetLayoutCreateInfo = new DescriptorSetLayoutCreateInfo()
{
SType = StructureType.DescriptorSetLayoutCreateInfo,
PBindings = sLayoutBindings,
BindingCount = (uint)stagesCount
};
var tDescriptorSetLayoutCreateInfo = new DescriptorSetLayoutCreateInfo()
{
SType = StructureType.DescriptorSetLayoutCreateInfo,
PBindings = tLayoutBindings,
BindingCount = (uint)tCount
};
var iDescriptorSetLayoutCreateInfo = new DescriptorSetLayoutCreateInfo()
{
SType = StructureType.DescriptorSetLayoutCreateInfo,
PBindings = iLayoutBindings,
BindingCount = (uint)iCount
};
gd.Api.CreateDescriptorSetLayout(device, uDescriptorSetLayoutCreateInfo, null, out layouts[PipelineFull.UniformSetIndex]).ThrowOnError();
gd.Api.CreateDescriptorSetLayout(device, sDescriptorSetLayoutCreateInfo, null, out layouts[PipelineFull.StorageSetIndex]).ThrowOnError();
gd.Api.CreateDescriptorSetLayout(device, tDescriptorSetLayoutCreateInfo, null, out layouts[PipelineFull.TextureSetIndex]).ThrowOnError();
gd.Api.CreateDescriptorSetLayout(device, iDescriptorSetLayoutCreateInfo, null, out layouts[PipelineFull.ImageSetIndex]).ThrowOnError();
fixed(DescriptorSetLayout *pLayouts = layouts)
{
var pipelineLayoutCreateInfo = new PipelineLayoutCreateInfo()
{
SType = StructureType.PipelineLayoutCreateInfo,
PSetLayouts = pLayouts,
SetLayoutCount = PipelineFull.DescriptorSetLayouts
};
gd.Api.CreatePipelineLayout(device, &pipelineLayoutCreateInfo, null, out layout).ThrowOnError();
}
return(layouts);
}
