public static InnerResourceView Create(Resource resource, ShaderResourceViewDescription description)
{
switch (description.Dimension)
{
case ShaderResourceViewDimension.Texture1D:
throw new NotImplementedException();
case ShaderResourceViewDimension.Texture1DArray:
throw new NotImplementedException();
case ShaderResourceViewDimension.Texture2D:
return(new Texture2DView((Texture2D)resource, description.Texture2D));
case ShaderResourceViewDimension.Texture2DArray:
return(new Texture2DArrayView((Texture2D)resource, description.Texture2DArray));
case ShaderResourceViewDimension.Texture2DMultisampled:
throw new NotImplementedException();
case ShaderResourceViewDimension.Texture2DMultisampledArray:
throw new NotImplementedException();
case ShaderResourceViewDimension.Texture3D:
throw new NotImplementedException();
case ShaderResourceViewDimension.TextureCube:
throw new NotImplementedException();
case ShaderResourceViewDimension.TextureCubeArray:
throw new NotImplementedException();
default:
throw new ArgumentOutOfRangeException();
}
}
public static InnerResourceView Create(Resource resource, ShaderResourceViewDescription description)
{
switch (description.Dimension)
{
case ShaderResourceViewDimension.Texture1D:
throw new NotImplementedException();
case ShaderResourceViewDimension.Texture1DArray:
throw new NotImplementedException();
case ShaderResourceViewDimension.Texture2D:
return new Texture2DView((Texture2D) resource, description.Texture2D);
case ShaderResourceViewDimension.Texture2DArray:
return new Texture2DArrayView((Texture2D) resource, description.Texture2DArray);
case ShaderResourceViewDimension.Texture2DMultisampled:
throw new NotImplementedException();
case ShaderResourceViewDimension.Texture2DMultisampledArray:
throw new NotImplementedException();
case ShaderResourceViewDimension.Texture3D:
throw new NotImplementedException();
case ShaderResourceViewDimension.TextureCube:
throw new NotImplementedException();
case ShaderResourceViewDimension.TextureCubeArray:
throw new NotImplementedException();
default:
throw new ArgumentOutOfRangeException();
}
}
internal static ShaderResourceViewDescription CreateDefault(Resource resource)
{
var result = new ShaderResourceViewDescription();
switch (resource.ResourceType)
{
case ResourceType.Texture1D:
{
var texture = (Texture1D)resource;
if (texture.Description.ArraySize > 1)
{
result.Dimension = ShaderResourceViewDimension.Texture1DArray;
result.Texture1DArray.ArraySize = texture.Description.ArraySize;
result.Texture1DArray.FirstArraySlice = 0;
result.Texture1DArray.MostDetailedMip = 0;
result.Texture1DArray.MipLevels = texture.Description.MipLevels;
}
else
{
result.Dimension = ShaderResourceViewDimension.Texture1D;
result.Texture1D.MostDetailedMip = 0;
result.Texture1D.MipLevels = texture.Description.MipLevels;
}
break;
}
case ResourceType.Texture2D:
{
var texture = (Texture2D)resource;
if (texture.Description.ArraySize > 1)
{
result.Dimension = ShaderResourceViewDimension.Texture2DArray;
result.Texture2DArray.ArraySize = texture.Description.ArraySize;
result.Texture2DArray.FirstArraySlice = 0;
result.Texture2DArray.MostDetailedMip = 0;
result.Texture2DArray.MipLevels = texture.Description.MipLevels;
}
else
{
result.Dimension = ShaderResourceViewDimension.Texture2D;
result.Texture2D.MostDetailedMip = 0;
result.Texture2D.MipLevels = texture.Description.MipLevels;
}
break;
}
case ResourceType.Texture3D:
result.Dimension = ShaderResourceViewDimension.Texture3D;
break;
default:
throw new ArgumentOutOfRangeException();
}
return(result);
}
public Texture2DArrayView(Texture2D resource, ShaderResourceViewDescription.Texture2DArrayResource description)
{
_mipMapCount = description.MipLevels;
_arraySize = description.ArraySize;
_subresources = new Texture2D.Texture2DSubresource[description.MipLevels * description.ArraySize];
int counter = 0;
for (int i = description.FirstArraySlice; i < description.FirstArraySlice + description.ArraySize; i++)
for (int j = description.MostDetailedMip; j < description.MostDetailedMip + description.MipLevels; j++)
_subresources[counter++] = resource.GetSubresource(i, j);
}
internal static ShaderResourceViewDescription CreateDefault(Resource resource)
{
var result = new ShaderResourceViewDescription();
switch (resource.ResourceType)
{
case ResourceType.Texture1D:
{
var texture = (Texture1D) resource;
if (texture.Description.ArraySize > 1)
{
result.Dimension = ShaderResourceViewDimension.Texture1DArray;
result.Texture1DArray.ArraySize = texture.Description.ArraySize;
result.Texture1DArray.FirstArraySlice = 0;
result.Texture1DArray.MostDetailedMip = 0;
result.Texture1DArray.MipLevels = texture.Description.MipLevels;
}
else
{
result.Dimension = ShaderResourceViewDimension.Texture1D;
result.Texture1D.MostDetailedMip = 0;
result.Texture1D.MipLevels = texture.Description.MipLevels;
}
break;
}
case ResourceType.Texture2D:
{
var texture = (Texture2D) resource;
if (texture.Description.ArraySize > 1)
{
result.Dimension = ShaderResourceViewDimension.Texture2DArray;
result.Texture2DArray.ArraySize = texture.Description.ArraySize;
result.Texture2DArray.FirstArraySlice = 0;
result.Texture2DArray.MostDetailedMip = 0;
result.Texture2DArray.MipLevels = texture.Description.MipLevels;
}
else
{
result.Dimension = ShaderResourceViewDimension.Texture2D;
result.Texture2D.MostDetailedMip = 0;
result.Texture2D.MipLevels = texture.Description.MipLevels;
}
break;
}
case ResourceType.Texture3D:
result.Dimension = ShaderResourceViewDimension.Texture3D;
break;
default:
throw new ArgumentOutOfRangeException();
}
return result;
}
internal ShaderResourceView(Device device, Resource resource, ShaderResourceViewDescription? description)
: base(device, resource)
{
_description = description.GetValueOrDefault(ShaderResourceViewDescription.CreateDefault(resource));
_innerView = InnerResourceView.Create(resource, _description);
}
public Texture2DView(Texture2D resource, ShaderResourceViewDescription.Texture2DResource description)
{
_subresources = new Texture2D.Texture2DSubresource[description.MipLevels];
for (int i = description.MostDetailedMip; i < description.MostDetailedMip + description.MipLevels; i++)
_subresources[i] = resource.GetSubresource(0, i);
}
internal ShaderResourceView(Device device, Resource resource, ShaderResourceViewDescription?description)
: base(device, resource)
{
_description = description.GetValueOrDefault(ShaderResourceViewDescription.CreateDefault(resource));
_innerView = InnerResourceView.Create(resource, _description);
}
