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use windows::Win32::Graphics::{Direct3D12, Dxgi};
use crate::auxil;
pub(super) struct ViewDescriptor {
dimension: wgt::TextureViewDimension,
pub aspects: crate::FormatAspects,
pub rtv_dsv_format: Dxgi::Common::DXGI_FORMAT,
srv_uav_format: Option<Dxgi::Common::DXGI_FORMAT>,
multisampled: bool,
array_layer_base: u32,
array_layer_count: u32,
mip_level_base: u32,
mip_level_count: u32,
}
impl crate::TextureViewDescriptor<'_> {
pub(super) fn to_internal(&self, texture: &super::Texture) -> ViewDescriptor {
let aspects = crate::FormatAspects::new(texture.format, self.range.aspect);
ViewDescriptor {
dimension: self.dimension,
aspects,
rtv_dsv_format: auxil::dxgi::conv::map_texture_format(self.format),
srv_uav_format: auxil::dxgi::conv::map_texture_format_for_srv_uav(self.format, aspects),
multisampled: texture.sample_count > 1,
mip_level_base: self.range.base_mip_level,
mip_level_count: self.range.mip_level_count.unwrap_or(!0),
array_layer_base: self.range.base_array_layer,
array_layer_count: self.range.array_layer_count.unwrap_or(!0),
}
}
}
fn aspects_to_plane(aspects: crate::FormatAspects) -> u32 {
match aspects {
crate::FormatAspects::STENCIL => 1,
crate::FormatAspects::PLANE_1 => 1,
crate::FormatAspects::PLANE_2 => 2,
_ => 0,
}
}
impl ViewDescriptor {
pub(crate) unsafe fn to_srv(&self) -> Option<Direct3D12::D3D12_SHADER_RESOURCE_VIEW_DESC> {
let mut desc = Direct3D12::D3D12_SHADER_RESOURCE_VIEW_DESC {
Format: self.srv_uav_format?,
ViewDimension: Direct3D12::D3D12_SRV_DIMENSION_UNKNOWN,
Shader4ComponentMapping: Direct3D12::D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING,
Anonymous: Default::default(),
};
match self.dimension {
wgt::TextureViewDimension::D1 => {
desc.ViewDimension = Direct3D12::D3D12_SRV_DIMENSION_TEXTURE1D;
desc.Anonymous.Texture1D = Direct3D12::D3D12_TEX1D_SRV {
MostDetailedMip: self.mip_level_base,
MipLevels: self.mip_level_count,
ResourceMinLODClamp: 0.0,
}
}
/*
wgt::TextureViewDimension::D1Array => {
desc.ViewDimension = Direct3D12::D3D12_SRV_DIMENSION_TEXTURE1DARRAY;
desc.Anonymous.Texture1DArray = Direct3D12::D3D12_TEX1D_ARRAY_SRV {
MostDetailedMip: self.mip_level_base,
MipLevels: self.mip_level_count,
FirstArraySlice: self.array_layer_base,
ArraySize: self.array_layer_count,
ResourceMinLODClamp: 0.0,
}
}
*/
wgt::TextureViewDimension::D2 if self.multisampled && self.array_layer_base == 0 => {
desc.ViewDimension = Direct3D12::D3D12_SRV_DIMENSION_TEXTURE2DMS;
desc.Anonymous.Texture2DMS = Direct3D12::D3D12_TEX2DMS_SRV {
UnusedField_NothingToDefine: 0,
}
}
wgt::TextureViewDimension::D2 if self.array_layer_base == 0 => {
desc.ViewDimension = Direct3D12::D3D12_SRV_DIMENSION_TEXTURE2D;
desc.Anonymous.Texture2D = Direct3D12::D3D12_TEX2D_SRV {
MostDetailedMip: self.mip_level_base,
MipLevels: self.mip_level_count,
PlaneSlice: aspects_to_plane(self.aspects),
ResourceMinLODClamp: 0.0,
}
}
wgt::TextureViewDimension::D2 | wgt::TextureViewDimension::D2Array
if self.multisampled =>
{
desc.ViewDimension = Direct3D12::D3D12_SRV_DIMENSION_TEXTURE2DMSARRAY;
desc.Anonymous.Texture2DMSArray = Direct3D12::D3D12_TEX2DMS_ARRAY_SRV {
FirstArraySlice: self.array_layer_base,
ArraySize: self.array_layer_count,
}
}
wgt::TextureViewDimension::D2 | wgt::TextureViewDimension::D2Array => {
desc.ViewDimension = Direct3D12::D3D12_SRV_DIMENSION_TEXTURE2DARRAY;
desc.Anonymous.Texture2DArray = Direct3D12::D3D12_TEX2D_ARRAY_SRV {
MostDetailedMip: self.mip_level_base,
MipLevels: self.mip_level_count,
FirstArraySlice: self.array_layer_base,
ArraySize: self.array_layer_count,
PlaneSlice: aspects_to_plane(self.aspects),
ResourceMinLODClamp: 0.0,
}
}
wgt::TextureViewDimension::D3 => {
desc.ViewDimension = Direct3D12::D3D12_SRV_DIMENSION_TEXTURE3D;
desc.Anonymous.Texture3D = Direct3D12::D3D12_TEX3D_SRV {
MostDetailedMip: self.mip_level_base,
MipLevels: self.mip_level_count,
ResourceMinLODClamp: 0.0,
}
}
wgt::TextureViewDimension::Cube if self.array_layer_base == 0 => {
desc.ViewDimension = Direct3D12::D3D12_SRV_DIMENSION_TEXTURECUBE;
desc.Anonymous.TextureCube = Direct3D12::D3D12_TEXCUBE_SRV {
MostDetailedMip: self.mip_level_base,
MipLevels: self.mip_level_count,
ResourceMinLODClamp: 0.0,
}
}
wgt::TextureViewDimension::Cube | wgt::TextureViewDimension::CubeArray => {
desc.ViewDimension = Direct3D12::D3D12_SRV_DIMENSION_TEXTURECUBEARRAY;
desc.Anonymous.TextureCubeArray = Direct3D12::D3D12_TEXCUBE_ARRAY_SRV {
MostDetailedMip: self.mip_level_base,
MipLevels: self.mip_level_count,
First2DArrayFace: self.array_layer_base,
NumCubes: if self.array_layer_count == !0 {
!0
} else {
self.array_layer_count / 6
},
ResourceMinLODClamp: 0.0,
}
}
}
Some(desc)
}
pub(crate) unsafe fn to_uav(&self) -> Option<Direct3D12::D3D12_UNORDERED_ACCESS_VIEW_DESC> {
let mut desc = Direct3D12::D3D12_UNORDERED_ACCESS_VIEW_DESC {
Format: self.srv_uav_format?,
ViewDimension: Direct3D12::D3D12_UAV_DIMENSION_UNKNOWN,
Anonymous: Default::default(),
};
match self.dimension {
wgt::TextureViewDimension::D1 => {
desc.ViewDimension = Direct3D12::D3D12_UAV_DIMENSION_TEXTURE1D;
desc.Anonymous.Texture1D = Direct3D12::D3D12_TEX1D_UAV {
MipSlice: self.mip_level_base,
}
}
/*
wgt::TextureViewDimension::D1Array => {
desc.ViewDimension = Direct3D12::D3D12_UAV_DIMENSION_TEXTURE1DARRAY;
desc.Anonymous.Texture1DArray = Direct3D12::D3D12_TEX1D_ARRAY_UAV {
MipSlice: self.mip_level_base,
FirstArraySlice: self.array_layer_base,
ArraySize,
}
}*/
wgt::TextureViewDimension::D2 if self.array_layer_base == 0 => {
desc.ViewDimension = Direct3D12::D3D12_UAV_DIMENSION_TEXTURE2D;
desc.Anonymous.Texture2D = Direct3D12::D3D12_TEX2D_UAV {
MipSlice: self.mip_level_base,
PlaneSlice: aspects_to_plane(self.aspects),
}
}
wgt::TextureViewDimension::D2 | wgt::TextureViewDimension::D2Array => {
desc.ViewDimension = Direct3D12::D3D12_UAV_DIMENSION_TEXTURE2DARRAY;
desc.Anonymous.Texture2DArray = Direct3D12::D3D12_TEX2D_ARRAY_UAV {
MipSlice: self.mip_level_base,
FirstArraySlice: self.array_layer_base,
ArraySize: self.array_layer_count,
PlaneSlice: aspects_to_plane(self.aspects),
}
}
wgt::TextureViewDimension::D3 => {
desc.ViewDimension = Direct3D12::D3D12_UAV_DIMENSION_TEXTURE3D;
desc.Anonymous.Texture3D = Direct3D12::D3D12_TEX3D_UAV {
MipSlice: self.mip_level_base,
FirstWSlice: self.array_layer_base,
WSize: self.array_layer_count,
}
}
wgt::TextureViewDimension::Cube | wgt::TextureViewDimension::CubeArray => {
panic!("Unable to view texture as cube UAV")
}
}
Some(desc)
}
pub(crate) unsafe fn to_rtv(&self) -> Direct3D12::D3D12_RENDER_TARGET_VIEW_DESC {
let mut desc = Direct3D12::D3D12_RENDER_TARGET_VIEW_DESC {
Format: self.rtv_dsv_format,
ViewDimension: Direct3D12::D3D12_RTV_DIMENSION_UNKNOWN,
Anonymous: Default::default(),
};
match self.dimension {
wgt::TextureViewDimension::D1 => {
desc.ViewDimension = Direct3D12::D3D12_RTV_DIMENSION_TEXTURE1D;
desc.Anonymous.Texture1D = Direct3D12::D3D12_TEX1D_RTV {
MipSlice: self.mip_level_base,
}
}
/*
wgt::TextureViewDimension::D1Array => {
desc.ViewDimension = Direct3D12::D3D12_RTV_DIMENSION_TEXTURE1DARRAY;
desc.Anonymous.Texture1DArray = Direct3D12::D3D12_TEX1D_ARRAY_RTV {
MipSlice: self.mip_level_base,
FirstArraySlice: self.array_layer_base,
ArraySize,
}
}*/
wgt::TextureViewDimension::D2 if self.multisampled && self.array_layer_base == 0 => {
desc.ViewDimension = Direct3D12::D3D12_RTV_DIMENSION_TEXTURE2DMS;
desc.Anonymous.Texture2DMS = Direct3D12::D3D12_TEX2DMS_RTV {
UnusedField_NothingToDefine: 0,
}
}
wgt::TextureViewDimension::D2 if self.array_layer_base == 0 => {
desc.ViewDimension = Direct3D12::D3D12_RTV_DIMENSION_TEXTURE2D;
desc.Anonymous.Texture2D = Direct3D12::D3D12_TEX2D_RTV {
MipSlice: self.mip_level_base,
PlaneSlice: aspects_to_plane(self.aspects),
}
}
wgt::TextureViewDimension::D2 | wgt::TextureViewDimension::D2Array
if self.multisampled =>
{
desc.ViewDimension = Direct3D12::D3D12_RTV_DIMENSION_TEXTURE2DMSARRAY;
desc.Anonymous.Texture2DMSArray = Direct3D12::D3D12_TEX2DMS_ARRAY_RTV {
FirstArraySlice: self.array_layer_base,
ArraySize: self.array_layer_count,
}
}
wgt::TextureViewDimension::D2 | wgt::TextureViewDimension::D2Array => {
desc.ViewDimension = Direct3D12::D3D12_RTV_DIMENSION_TEXTURE2DARRAY;
desc.Anonymous.Texture2DArray = Direct3D12::D3D12_TEX2D_ARRAY_RTV {
MipSlice: self.mip_level_base,
FirstArraySlice: self.array_layer_base,
ArraySize: self.array_layer_count,
PlaneSlice: aspects_to_plane(self.aspects),
}
}
wgt::TextureViewDimension::D3 => {
desc.ViewDimension = Direct3D12::D3D12_RTV_DIMENSION_TEXTURE3D;
desc.Anonymous.Texture3D = Direct3D12::D3D12_TEX3D_RTV {
MipSlice: self.mip_level_base,
FirstWSlice: self.array_layer_base,
WSize: self.array_layer_count,
}
}
wgt::TextureViewDimension::Cube | wgt::TextureViewDimension::CubeArray => {
panic!("Unable to view texture as cube RTV")
}
}
desc
}
pub(crate) unsafe fn to_dsv(
&self,
read_only: bool,
) -> Direct3D12::D3D12_DEPTH_STENCIL_VIEW_DESC {
let mut desc = Direct3D12::D3D12_DEPTH_STENCIL_VIEW_DESC {
Format: self.rtv_dsv_format,
ViewDimension: Direct3D12::D3D12_DSV_DIMENSION_UNKNOWN,
Flags: {
let mut flags = Direct3D12::D3D12_DSV_FLAG_NONE;
if read_only {
if self.aspects.contains(crate::FormatAspects::DEPTH) {
flags |= Direct3D12::D3D12_DSV_FLAG_READ_ONLY_DEPTH;
}
if self.aspects.contains(crate::FormatAspects::STENCIL) {
flags |= Direct3D12::D3D12_DSV_FLAG_READ_ONLY_STENCIL;
}
}
flags
},
Anonymous: Default::default(),
};
match self.dimension {
wgt::TextureViewDimension::D1 => {
desc.ViewDimension = Direct3D12::D3D12_DSV_DIMENSION_TEXTURE1D;
desc.Anonymous.Texture1D = Direct3D12::D3D12_TEX1D_DSV {
MipSlice: self.mip_level_base,
}
}
/*
wgt::TextureViewDimension::D1Array => {
desc.ViewDimension = Direct3D12::D3D12_DSV_DIMENSION_TEXTURE1DARRAY;
desc.Anonymous.Texture1DArray = Direct3D12::D3D12_TEX1D_ARRAY_DSV {
MipSlice: self.mip_level_base,
FirstArraySlice: self.array_layer_base,
ArraySize,
}
}*/
wgt::TextureViewDimension::D2 if self.multisampled && self.array_layer_base == 0 => {
desc.ViewDimension = Direct3D12::D3D12_DSV_DIMENSION_TEXTURE2DMS;
desc.Anonymous.Texture2DMS = Direct3D12::D3D12_TEX2DMS_DSV {
UnusedField_NothingToDefine: 0,
}
}
wgt::TextureViewDimension::D2 if self.array_layer_base == 0 => {
desc.ViewDimension = Direct3D12::D3D12_DSV_DIMENSION_TEXTURE2D;
desc.Anonymous.Texture2D = Direct3D12::D3D12_TEX2D_DSV {
MipSlice: self.mip_level_base,
}
}
wgt::TextureViewDimension::D2 | wgt::TextureViewDimension::D2Array
if self.multisampled =>
{
desc.ViewDimension = Direct3D12::D3D12_DSV_DIMENSION_TEXTURE2DMSARRAY;
desc.Anonymous.Texture2DMSArray = Direct3D12::D3D12_TEX2DMS_ARRAY_DSV {
FirstArraySlice: self.array_layer_base,
ArraySize: self.array_layer_count,
}
}
wgt::TextureViewDimension::D2 | wgt::TextureViewDimension::D2Array => {
desc.ViewDimension = Direct3D12::D3D12_DSV_DIMENSION_TEXTURE2DARRAY;
desc.Anonymous.Texture2DArray = Direct3D12::D3D12_TEX2D_ARRAY_DSV {
MipSlice: self.mip_level_base,
FirstArraySlice: self.array_layer_base,
ArraySize: self.array_layer_count,
}
}
wgt::TextureViewDimension::D3
| wgt::TextureViewDimension::Cube
| wgt::TextureViewDimension::CubeArray => {
panic!("Unable to view texture as cube or 3D RTV")
}
}
desc
}
}