GetDefaultView(TEXTURE_VIEW_READ_ONLY_DEPTH_STENCIL) always returns null on Vulkan #764
Description
When creating a texture with BindFlags BIND_SHADER_RESOURCE | BIND_DEPTH_STENCIL, calling GetDefaultView(TEXTURE_VIEW_READ_ONLY_DEPTH_STENCIL) returns a nullpointer because the corresponding default view is invalid. I can however create a view like this manually. Additionally, I'm unable to find a location where this default view would be created, TextureBase.hpp only creates a default view for TEXTURE_VIEW_DEPTH_STENCIL.
The following snippet demonstrates the issue, the ReadOnly DSV is always a nullptr.
void CreateDepthTextureAndViews(Diligent::IRenderDevice* pDevice)
{
using namespace Diligent;
TextureDesc TexDesc;
TexDesc.Name = "MyDepthTex";
TexDesc.Type = RESOURCE_DIM_TEX_2D;
TexDesc.Width = 1024;
TexDesc.Height = 1024;
TexDesc.MipLevels = 1;
TexDesc.Format = TEX_FORMAT_D32_FLOAT;
TexDesc.BindFlags = BIND_DEPTH_STENCIL | BIND_SHADER_RESOURCE;
RefCntAutoPtr<ITexture> pDepthTex;
pDevice->CreateTexture(TexDesc, nullptr, &pDepthTex);
ITextureView* pWritableDSV = pDepthTex->GetDefaultView(TEXTURE_VIEW_DEPTH_STENCIL);
ITextureView* pReadOnlyDSV = pDepthTex->GetDefaultView(TEXTURE_VIEW_READ_ONLY_DEPTH_STENCIL);
printf("Writable DSV: %p\n", pWritableDSV);
printf("ReadOnly DSV: %p\n", pReadOnlyDSV);
TextureViewDesc ViewDesc;
ViewDesc.Name = "Manual_ReadOnly_DSV";
ViewDesc.ViewType = TEXTURE_VIEW_DEPTH_STENCIL;
ViewDesc.TextureDim = RESOURCE_DIM_TEX_2D;
ViewDesc.Format = TexDesc.Format;
ViewDesc.MostDetailedMip = 0;
ViewDesc.NumMipLevels = 1;
ViewDesc.FirstArraySlice = 0;
ViewDesc.NumArraySlices = 1;
RefCntAutoPtr<ITextureView> pManualReadOnlyDSV;
pDepthTex->CreateView(ViewDesc, &pManualReadOnlyDSV);
printf("Manually created read-only DSV: %p\n", pManualReadOnlyDSV.RawPtr());
}