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https://github.com/mpv-player/mpv
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4b177bd5c2
Semi-important, because --hwdec=dxva2 outputs NV12, and we really don't want people to end up with the "old" StretchRect method. Unfortunately, I couldn't actually get it to work. It seems most D3D drivers (including the wine D3D implementation) reject D3DFMT_A8L8, and I could not find any other 2-channel 8 bit Direct3D 9 format. It seems newer D3D APIs have DXGI_FORMAT_R8G8_UNORM, but there's no way to get it in D3D9. Still pushing this; maybe it actually works on some drivers.
33 lines
982 B
HLSL
33 lines
982 B
HLSL
// Compile with:
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// fxc.exe /Tps_2_0 -DUSE_420P=1 /Fhd3d_shader_420p.h d3d_shader_yuv.hlsl /Vnd3d_shader_420p
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// fxc.exe /Tps_2_0 -DUSE_NV12=1 /Fhd3d_shader_nv12.h d3d_shader_yuv.hlsl /Vnd3d_shader_nv12
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// Be careful with this shader. You can't use constant slots, since we don't
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// load the shader with D3DX. All uniform variables are mapped to hardcoded
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// constant slots.
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sampler2D tex0 : register(s0);
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sampler2D tex1 : register(s1);
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sampler2D tex2 : register(s2);
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uniform float4x4 colormatrix : register(c0);
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float4 main(float2 t0 : TEXCOORD0,
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float2 t1 : TEXCOORD1,
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float2 t2 : TEXCOORD2)
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: COLOR
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{
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#ifdef USE_420P
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float4 c = float4(tex2D(tex0, t0).x,
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tex2D(tex1, t1).x,
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tex2D(tex2, t2).x,
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1);
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#endif
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#ifdef USE_NV12
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float4 c = float4(tex2D(tex0, t0).x,
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tex2D(tex1, t1).xz,
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1);
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#endif
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return mul(c, colormatrix);
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}
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