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|
use crate::auxil;
use std::mem;
use winapi::um::d3d12 as d3d12_ty;
pub(crate) const D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING: u32 = 0x1688;
pub(super) struct ViewDescriptor {
dimension: wgt::TextureViewDimension,
pub aspects: crate::FormatAspects,
pub rtv_dsv_format: d3d12::Format,
srv_uav_format: Option<d3d12::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(self.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),
}
}
}
impl ViewDescriptor {
pub(crate) unsafe fn to_srv(&self) -> Option<d3d12_ty::D3D12_SHADER_RESOURCE_VIEW_DESC> {
let mut desc = d3d12_ty::D3D12_SHADER_RESOURCE_VIEW_DESC {
Format: self.srv_uav_format?,
ViewDimension: 0,
Shader4ComponentMapping: D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING,
u: unsafe { mem::zeroed() },
};
match self.dimension {
wgt::TextureViewDimension::D1 => {
desc.ViewDimension = d3d12_ty::D3D12_SRV_DIMENSION_TEXTURE1D;
unsafe {
*desc.u.Texture1D_mut() = d3d12_ty::D3D12_TEX1D_SRV {
MostDetailedMip: self.mip_level_base,
MipLevels: self.mip_level_count,
ResourceMinLODClamp: 0.0,
}
}
}
/*
wgt::TextureViewDimension::D1Array => {
desc.ViewDimension = d3d12_ty::D3D12_SRV_DIMENSION_TEXTURE1DARRAY;
*desc.u.Texture1DArray_mut() = d3d12_ty::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 = d3d12_ty::D3D12_SRV_DIMENSION_TEXTURE2DMS;
unsafe {
*desc.u.Texture2DMS_mut() = d3d12_ty::D3D12_TEX2DMS_SRV {
UnusedField_NothingToDefine: 0,
}
}
}
wgt::TextureViewDimension::D2 if self.array_layer_base == 0 => {
desc.ViewDimension = d3d12_ty::D3D12_SRV_DIMENSION_TEXTURE2D;
unsafe {
*desc.u.Texture2D_mut() = d3d12_ty::D3D12_TEX2D_SRV {
MostDetailedMip: self.mip_level_base,
MipLevels: self.mip_level_count,
PlaneSlice: 0,
ResourceMinLODClamp: 0.0,
}
}
}
wgt::TextureViewDimension::D2 | wgt::TextureViewDimension::D2Array
if self.multisampled =>
{
desc.ViewDimension = d3d12_ty::D3D12_SRV_DIMENSION_TEXTURE2DMSARRAY;
unsafe {
*desc.u.Texture2DMSArray_mut() = d3d12_ty::D3D12_TEX2DMS_ARRAY_SRV {
FirstArraySlice: self.array_layer_base,
ArraySize: self.array_layer_count,
}
}
}
wgt::TextureViewDimension::D2 | wgt::TextureViewDimension::D2Array => {
desc.ViewDimension = d3d12_ty::D3D12_SRV_DIMENSION_TEXTURE2DARRAY;
unsafe {
*desc.u.Texture2DArray_mut() = d3d12_ty::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: 0,
ResourceMinLODClamp: 0.0,
}
}
}
wgt::TextureViewDimension::D3 => {
desc.ViewDimension = d3d12_ty::D3D12_SRV_DIMENSION_TEXTURE3D;
unsafe {
*desc.u.Texture3D_mut() = d3d12_ty::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 = d3d12_ty::D3D12_SRV_DIMENSION_TEXTURECUBE;
unsafe {
*desc.u.TextureCube_mut() = d3d12_ty::D3D12_TEXCUBE_SRV {
MostDetailedMip: self.mip_level_base,
MipLevels: self.mip_level_count,
ResourceMinLODClamp: 0.0,
}
}
}
wgt::TextureViewDimension::Cube | wgt::TextureViewDimension::CubeArray => {
desc.ViewDimension = d3d12_ty::D3D12_SRV_DIMENSION_TEXTURECUBEARRAY;
unsafe {
*desc.u.TextureCubeArray_mut() = d3d12_ty::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<d3d12_ty::D3D12_UNORDERED_ACCESS_VIEW_DESC> {
let mut desc = d3d12_ty::D3D12_UNORDERED_ACCESS_VIEW_DESC {
Format: self.srv_uav_format?,
ViewDimension: 0,
u: unsafe { mem::zeroed() },
};
match self.dimension {
wgt::TextureViewDimension::D1 => {
desc.ViewDimension = d3d12_ty::D3D12_UAV_DIMENSION_TEXTURE1D;
unsafe {
*desc.u.Texture1D_mut() = d3d12_ty::D3D12_TEX1D_UAV {
MipSlice: self.mip_level_base,
}
}
}
/*
wgt::TextureViewDimension::D1Array => {
desc.ViewDimension = d3d12_ty::D3D12_UAV_DIMENSION_TEXTURE1DARRAY;
*desc.u.Texture1DArray_mut() = d3d12_ty::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 = d3d12_ty::D3D12_UAV_DIMENSION_TEXTURE2D;
unsafe {
*desc.u.Texture2D_mut() = d3d12_ty::D3D12_TEX2D_UAV {
MipSlice: self.mip_level_base,
PlaneSlice: 0,
}
}
}
wgt::TextureViewDimension::D2 | wgt::TextureViewDimension::D2Array => {
desc.ViewDimension = d3d12_ty::D3D12_UAV_DIMENSION_TEXTURE2DARRAY;
unsafe {
*desc.u.Texture2DArray_mut() = d3d12_ty::D3D12_TEX2D_ARRAY_UAV {
MipSlice: self.mip_level_base,
FirstArraySlice: self.array_layer_base,
ArraySize: self.array_layer_count,
PlaneSlice: 0,
}
}
}
wgt::TextureViewDimension::D3 => {
desc.ViewDimension = d3d12_ty::D3D12_UAV_DIMENSION_TEXTURE3D;
unsafe {
*desc.u.Texture3D_mut() = d3d12_ty::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) -> d3d12_ty::D3D12_RENDER_TARGET_VIEW_DESC {
let mut desc = d3d12_ty::D3D12_RENDER_TARGET_VIEW_DESC {
Format: self.rtv_dsv_format,
ViewDimension: 0,
u: unsafe { mem::zeroed() },
};
match self.dimension {
wgt::TextureViewDimension::D1 => {
desc.ViewDimension = d3d12_ty::D3D12_RTV_DIMENSION_TEXTURE1D;
unsafe {
*desc.u.Texture1D_mut() = d3d12_ty::D3D12_TEX1D_RTV {
MipSlice: self.mip_level_base,
}
}
}
/*
wgt::TextureViewDimension::D1Array => {
desc.ViewDimension = d3d12_ty::D3D12_RTV_DIMENSION_TEXTURE1DARRAY;
*desc.u.Texture1DArray_mut() = d3d12_ty::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 = d3d12_ty::D3D12_RTV_DIMENSION_TEXTURE2DMS;
unsafe {
*desc.u.Texture2DMS_mut() = d3d12_ty::D3D12_TEX2DMS_RTV {
UnusedField_NothingToDefine: 0,
}
}
}
wgt::TextureViewDimension::D2 if self.array_layer_base == 0 => {
desc.ViewDimension = d3d12_ty::D3D12_RTV_DIMENSION_TEXTURE2D;
unsafe {
*desc.u.Texture2D_mut() = d3d12_ty::D3D12_TEX2D_RTV {
MipSlice: self.mip_level_base,
PlaneSlice: 0,
}
}
}
wgt::TextureViewDimension::D2 | wgt::TextureViewDimension::D2Array
if self.multisampled =>
{
desc.ViewDimension = d3d12_ty::D3D12_RTV_DIMENSION_TEXTURE2DMSARRAY;
unsafe {
*desc.u.Texture2DMSArray_mut() = d3d12_ty::D3D12_TEX2DMS_ARRAY_RTV {
FirstArraySlice: self.array_layer_base,
ArraySize: self.array_layer_count,
}
}
}
wgt::TextureViewDimension::D2 | wgt::TextureViewDimension::D2Array => {
desc.ViewDimension = d3d12_ty::D3D12_RTV_DIMENSION_TEXTURE2DARRAY;
unsafe {
*desc.u.Texture2DArray_mut() = d3d12_ty::D3D12_TEX2D_ARRAY_RTV {
MipSlice: self.mip_level_base,
FirstArraySlice: self.array_layer_base,
ArraySize: self.array_layer_count,
PlaneSlice: 0,
}
}
}
wgt::TextureViewDimension::D3 => {
desc.ViewDimension = d3d12_ty::D3D12_RTV_DIMENSION_TEXTURE3D;
unsafe {
*desc.u.Texture3D_mut() = d3d12_ty::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) -> d3d12_ty::D3D12_DEPTH_STENCIL_VIEW_DESC {
let mut desc = d3d12_ty::D3D12_DEPTH_STENCIL_VIEW_DESC {
Format: self.rtv_dsv_format,
ViewDimension: 0,
Flags: {
let mut flags = d3d12_ty::D3D12_DSV_FLAG_NONE;
if read_only {
if self.aspects.contains(crate::FormatAspects::DEPTH) {
flags |= d3d12_ty::D3D12_DSV_FLAG_READ_ONLY_DEPTH;
}
if self.aspects.contains(crate::FormatAspects::STENCIL) {
flags |= d3d12_ty::D3D12_DSV_FLAG_READ_ONLY_STENCIL;
}
}
flags
},
u: unsafe { mem::zeroed() },
};
match self.dimension {
wgt::TextureViewDimension::D1 => {
desc.ViewDimension = d3d12_ty::D3D12_DSV_DIMENSION_TEXTURE1D;
unsafe {
*desc.u.Texture1D_mut() = d3d12_ty::D3D12_TEX1D_DSV {
MipSlice: self.mip_level_base,
}
}
}
/*
wgt::TextureViewDimension::D1Array => {
desc.ViewDimension = d3d12_ty::D3D12_DSV_DIMENSION_TEXTURE1DARRAY;
*desc.u.Texture1DArray_mut() = d3d12_ty::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 = d3d12_ty::D3D12_DSV_DIMENSION_TEXTURE2DMS;
unsafe {
*desc.u.Texture2DMS_mut() = d3d12_ty::D3D12_TEX2DMS_DSV {
UnusedField_NothingToDefine: 0,
}
}
}
wgt::TextureViewDimension::D2 if self.array_layer_base == 0 => {
desc.ViewDimension = d3d12_ty::D3D12_DSV_DIMENSION_TEXTURE2D;
unsafe {
*desc.u.Texture2D_mut() = d3d12_ty::D3D12_TEX2D_DSV {
MipSlice: self.mip_level_base,
}
}
}
wgt::TextureViewDimension::D2 | wgt::TextureViewDimension::D2Array
if self.multisampled =>
{
desc.ViewDimension = d3d12_ty::D3D12_DSV_DIMENSION_TEXTURE2DMSARRAY;
unsafe {
*desc.u.Texture2DMSArray_mut() = d3d12_ty::D3D12_TEX2DMS_ARRAY_DSV {
FirstArraySlice: self.array_layer_base,
ArraySize: self.array_layer_count,
}
}
}
wgt::TextureViewDimension::D2 | wgt::TextureViewDimension::D2Array => {
desc.ViewDimension = d3d12_ty::D3D12_DSV_DIMENSION_TEXTURE2DARRAY;
unsafe {
*desc.u.Texture2DArray_mut() = d3d12_ty::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
}
}
|
