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rt(d3d11): split luts out to own module
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,152 @@ | ||
| use crate::error::assume_d3d11_init; | ||
| use crate::texture::InputTexture; | ||
| use crate::{error, D3D11InputView}; | ||
| use librashader_common::{FilterMode, WrapMode}; | ||
| use librashader_runtime::image::Image; | ||
| use librashader_runtime::scaling::MipmapSize; | ||
| use windows::Win32::Graphics::Direct3D::D3D_SRV_DIMENSION_TEXTURE2D; | ||
| use windows::Win32::Graphics::Direct3D11::{ | ||
| ID3D11Device, ID3D11DeviceContext, ID3D11Texture2D, D3D11_BIND_RENDER_TARGET, | ||
| D3D11_BIND_SHADER_RESOURCE, D3D11_BOX, D3D11_CPU_ACCESS_WRITE, | ||
| D3D11_RESOURCE_MISC_GENERATE_MIPS, D3D11_SHADER_RESOURCE_VIEW_DESC, | ||
| D3D11_SHADER_RESOURCE_VIEW_DESC_0, D3D11_SUBRESOURCE_DATA, D3D11_TEX2D_SRV, | ||
| D3D11_TEXTURE2D_DESC, D3D11_USAGE_DYNAMIC, D3D11_USAGE_STAGING, | ||
| }; | ||
| use windows::Win32::Graphics::Dxgi::Common::DXGI_SAMPLE_DESC; | ||
|
|
||
| #[derive(Debug, Clone)] | ||
| pub(crate) struct LutTexture { | ||
| // The handle to the Texture2D must be kept alive. | ||
| #[allow(dead_code)] | ||
| pub handle: ID3D11Texture2D, | ||
| #[allow(dead_code)] | ||
| pub desc: D3D11_TEXTURE2D_DESC, | ||
| pub image: InputTexture, | ||
| } | ||
|
|
||
| impl AsRef<InputTexture> for LutTexture { | ||
| fn as_ref(&self) -> &InputTexture { | ||
| &self.image | ||
| } | ||
| } | ||
|
|
||
| impl LutTexture { | ||
| pub fn new( | ||
| device: &ID3D11Device, | ||
| context: &ID3D11DeviceContext, | ||
| source: &Image, | ||
| desc: D3D11_TEXTURE2D_DESC, | ||
| filter: FilterMode, | ||
| wrap_mode: WrapMode, | ||
| ) -> error::Result<LutTexture> { | ||
| let mut desc = D3D11_TEXTURE2D_DESC { | ||
| Width: source.size.width, | ||
| Height: source.size.height, | ||
| // todo: set this to 0 | ||
| MipLevels: if (desc.MiscFlags & D3D11_RESOURCE_MISC_GENERATE_MIPS.0 as u32) != 0 { | ||
| 0 | ||
| } else { | ||
| 1 | ||
| }, | ||
| ArraySize: 1, | ||
| SampleDesc: DXGI_SAMPLE_DESC { | ||
| Count: 1, | ||
| Quality: 0, | ||
| }, | ||
| CPUAccessFlags: if desc.Usage == D3D11_USAGE_DYNAMIC { | ||
| D3D11_CPU_ACCESS_WRITE.0 as u32 | ||
| } else { | ||
| 0 | ||
| }, | ||
| ..desc | ||
| }; | ||
| desc.BindFlags |= D3D11_BIND_SHADER_RESOURCE.0 as u32; | ||
|
|
||
| // determine number of mipmaps required | ||
| if (desc.MiscFlags & D3D11_RESOURCE_MISC_GENERATE_MIPS.0 as u32) != 0 { | ||
| desc.BindFlags |= D3D11_BIND_RENDER_TARGET.0 as u32; | ||
| desc.MipLevels = source.size.calculate_miplevels(); | ||
| } | ||
|
|
||
| // Don't need to determine format support because LUTs are always DXGI_FORMAT_R8G8B8A8_UNORM | ||
| // since we load them with the Image module. | ||
|
|
||
| unsafe { | ||
| let mut handle = None; | ||
| device.CreateTexture2D(&desc, None, Some(&mut handle))?; | ||
| assume_d3d11_init!(handle, "CreateTexture2D"); | ||
|
|
||
| // need a staging texture to defer mipmap generation | ||
| let mut staging = None; | ||
| device.CreateTexture2D( | ||
| &D3D11_TEXTURE2D_DESC { | ||
| MipLevels: 1, | ||
| BindFlags: 0, | ||
| MiscFlags: 0, | ||
| Usage: D3D11_USAGE_STAGING, | ||
| CPUAccessFlags: D3D11_CPU_ACCESS_WRITE.0 as u32, | ||
| ..desc | ||
| }, | ||
| Some(&D3D11_SUBRESOURCE_DATA { | ||
| pSysMem: source.bytes.as_ptr().cast(), | ||
| SysMemPitch: source.pitch as u32, | ||
| SysMemSlicePitch: 0, | ||
| }), | ||
| Some(&mut staging), | ||
| )?; | ||
| assume_d3d11_init!(staging, "CreateTexture2D"); | ||
|
|
||
| context.CopySubresourceRegion( | ||
| &handle, | ||
| 0, | ||
| 0, | ||
| 0, | ||
| 0, | ||
| &staging, | ||
| 0, | ||
| Some(&D3D11_BOX { | ||
| left: 0, | ||
| top: 0, | ||
| front: 0, | ||
| right: source.size.width, | ||
| bottom: source.size.height, | ||
| back: 1, | ||
| }), | ||
| ); | ||
|
|
||
| let mut srv = None; | ||
| device.CreateShaderResourceView( | ||
| &handle, | ||
| Some(&D3D11_SHADER_RESOURCE_VIEW_DESC { | ||
| Format: desc.Format, | ||
| ViewDimension: D3D_SRV_DIMENSION_TEXTURE2D, | ||
| Anonymous: D3D11_SHADER_RESOURCE_VIEW_DESC_0 { | ||
| Texture2D: D3D11_TEX2D_SRV { | ||
| MostDetailedMip: 0, | ||
| MipLevels: u32::MAX, | ||
| }, | ||
| }, | ||
| }), | ||
| Some(&mut srv), | ||
| )?; | ||
| assume_d3d11_init!(srv, "CreateShaderResourceView"); | ||
|
|
||
| if (desc.MiscFlags & D3D11_RESOURCE_MISC_GENERATE_MIPS.0 as u32) != 0 { | ||
| context.GenerateMips(&srv) | ||
| } | ||
|
|
||
| Ok(LutTexture { | ||
| handle, | ||
| desc, | ||
| image: InputTexture { | ||
| view: D3D11InputView { | ||
| handle: srv, | ||
| size: source.size, | ||
| }, | ||
| filter, | ||
| wrap_mode, | ||
| }, | ||
| }) | ||
| } | ||
| } | ||
| } |
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