public VkResourceLayout(VkGraphicsDevice gd, ref ResourceLayoutDescription description)
{
_gd = gd;
VkDescriptorSetLayoutCreateInfo dslCI = VkDescriptorSetLayoutCreateInfo.New();
ResourceLayoutElementDescription[] elements = description.Elements;
_descriptorTypes = new VkDescriptorType[elements.Length];
VkDescriptorSetLayoutBinding *bindings = stackalloc VkDescriptorSetLayoutBinding[elements.Length];
for (uint i = 0; i < elements.Length; i++)
{
bindings[i].binding = i;
bindings[i].descriptorCount = 1;
VkDescriptorType descriptorType = VkFormats.VdToVkDescriptorType(elements[i].Kind);
bindings[i].descriptorType = descriptorType;
bindings[i].stageFlags = VkFormats.VdToVkShaderStages(elements[i].Stages);
_descriptorTypes[i] = descriptorType;
}
dslCI.bindingCount = (uint)elements.Length;
dslCI.pBindings = bindings;
VkResult result = vkCreateDescriptorSetLayout(_gd.Device, ref dslCI, null, out _dsl);
CheckResult(result);
}
public VkResourceLayout(VkGraphicsDevice gd, ref ResourceLayoutDescription description)
: base(ref description)
{
_gd = gd;
VkDescriptorSetLayoutCreateInfo dslCI = VkDescriptorSetLayoutCreateInfo.New();
ResourceLayoutElementDescription[] elements = description.Elements;
_descriptorTypes = new VkDescriptorType[elements.Length];
VkDescriptorSetLayoutBinding *bindings = stackalloc VkDescriptorSetLayoutBinding[elements.Length];
uint uniformBufferCount = 0;
uint sampledImageCount = 0;
uint samplerCount = 0;
uint storageBufferCount = 0;
uint storageImageCount = 0;
for (uint i = 0; i < elements.Length; i++)
{
bindings[i].binding = i;
bindings[i].descriptorCount = 1;
VkDescriptorType descriptorType = VkFormats.VdToVkDescriptorType(elements[i].Kind, elements[i].Options);
bindings[i].descriptorType = descriptorType;
bindings[i].stageFlags = VkFormats.VdToVkShaderStages(elements[i].Stages);
if ((elements[i].Options & ResourceLayoutElementOptions.DynamicBinding) != 0)
{
DynamicBufferCount += 1;
}
_descriptorTypes[i] = descriptorType;
switch (descriptorType)
{
case VkDescriptorType.Sampler:
samplerCount += 1;
break;
case VkDescriptorType.SampledImage:
sampledImageCount += 1;
break;
case VkDescriptorType.StorageImage:
storageImageCount += 1;
break;
case VkDescriptorType.UniformBuffer:
uniformBufferCount += 1;
break;
case VkDescriptorType.StorageBuffer:
storageBufferCount += 1;
break;
}
}
DescriptorResourceCounts = new DescriptorResourceCounts(
uniformBufferCount,
sampledImageCount,
samplerCount,
storageBufferCount,
storageImageCount);
dslCI.bindingCount = (uint)elements.Length;
dslCI.pBindings = bindings;
VkResult result = vkCreateDescriptorSetLayout(_gd.Device, ref dslCI, null, out _dsl);
CheckResult(result);
}
