Initial commitHEADmain

1 files changed, 47 insertions, 0 deletions

diff --git a/SDL-3.2.8/src/render/direct3d/D3D9_PixelShader_YUV.hlsl b/SDL-3.2.8/src/render/direct3d/D3D9_PixelShader_YUV.hlsl
new file mode 100644
index 0000000..8804848
--- /dev/null
+++ b/SDL-3.2.8/src/render/direct3d/D3D9_PixelShader_YUV.hlsl
@@ -0,0 +1,47 @@
+
+Texture2D theTextureY : register(t0);
+Texture2D theTextureU : register(t1);
+Texture2D theTextureV : register(t2);
+
+SamplerState theSampler = sampler_state
+{
+    addressU = Clamp;
+    addressV = Clamp;
+    mipfilter = NONE;
+    minfilter = LINEAR;
+    magfilter = LINEAR;
+};
+
+struct PixelShaderInput
+{
+    float4 pos : SV_POSITION;
+    float2 tex : TEXCOORD0;
+    float4 color : COLOR0;
+};
+
+cbuffer Constants : register(b0)
+{
+    float4 Yoffset;
+    float4 Rcoeff;
+    float4 Gcoeff;
+    float4 Bcoeff;
+};
+
+
+float4 main(PixelShaderInput input) : SV_TARGET
+{
+    float4 Output;
+
+    float3 yuv;
+    yuv.x = theTextureY.Sample(theSampler, input.tex).r;
+    yuv.y = theTextureU.Sample(theSampler, input.tex).r;
+    yuv.z = theTextureV.Sample(theSampler, input.tex).r;
+
+    yuv += Yoffset.xyz;
+    Output.r = dot(yuv, Rcoeff.xyz);
+    Output.g = dot(yuv, Gcoeff.xyz);
+    Output.b = dot(yuv, Bcoeff.xyz);
+    Output.a = 1.0f;
+
+    return Output * input.color;
+}