diff options
Diffstat (limited to 'LibOVR/Src/CAPI/D3D1X/Shaders/DistortionTimewarpChroma_vs.vsh')
| -rw-r--r-- | LibOVR/Src/CAPI/D3D1X/Shaders/DistortionTimewarpChroma_vs.vsh | 70 |
1 files changed, 54 insertions, 16 deletions
diff --git a/LibOVR/Src/CAPI/D3D1X/Shaders/DistortionTimewarpChroma_vs.vsh b/LibOVR/Src/CAPI/D3D1X/Shaders/DistortionTimewarpChroma_vs.vsh index 7e5512b..1f62785 100644 --- a/LibOVR/Src/CAPI/D3D1X/Shaders/DistortionTimewarpChroma_vs.vsh +++ b/LibOVR/Src/CAPI/D3D1X/Shaders/DistortionTimewarpChroma_vs.vsh @@ -1,8 +1,8 @@ /************************************************************************************
-Filename : DistortionTimewarpChroma_vs.vsh
+Filename : DistortionPositionTimewarpChroma_vs.vsh
-Copyright : Copyright 2014 Oculus VR, LLC All Rights reserved.
+Copyright : Copyright 2014 Oculus VR, LLC All Rights reserved.
Licensed under the Oculus VR Rift SDK License Version 3.2 (the "License");
you may not use the Oculus VR Rift SDK except in compliance with the License,
@@ -21,46 +21,84 @@ limitations under the License. ************************************************************************************/
+Texture2DMS<float,1> DepthTexture1x : register(t0);
+Texture2DMS<float,2> DepthTexture2x : register(t1);
+Texture2DMS<float,4> DepthTexture4x : register(t2);
+
+float depthMsaaSamples = -1.0; // -1 means it's disabled
+
float2 EyeToSourceUVScale;
float2 EyeToSourceUVOffset;
float4x4 EyeRotationStart;
float4x4 EyeRotationEnd;
+// DepthProjector values can also be calculated as:
+// float DepthProjectorX = FarClip / (FarClip - NearClip);
+// float DepthProjectorY = (-FarClip * NearClip) / (FarClip - NearClip);
+float2 DepthProjector;
+float2 DepthDimSize;
+
+float4 PositionFromDepth(float2 inTexCoord)
+{
+ float2 eyeToSourceTexCoord = inTexCoord * EyeToSourceUVScale + EyeToSourceUVOffset;
+ float linearDepth = 1.0;
+
+ if(depthMsaaSamples > 0.0)
+ {
+ float depth;
+ if(depthMsaaSamples <= 1.5)
+ depth = DepthTexture1x.Load(int2(eyeToSourceTexCoord * DepthDimSize), 0).x;
+ else if(depthMsaaSamples <= 2.5)
+ depth = DepthTexture2x.Load(int2(eyeToSourceTexCoord * DepthDimSize), 0).x;
+ else
+ depth = DepthTexture4x.Load(int2(eyeToSourceTexCoord * DepthDimSize), 0).x;
+
+ linearDepth = DepthProjector.y / (depth - DepthProjector.x);
+ }
+
+ float4 retVal = float4(inTexCoord, 1, 1);
+ retVal.xyz *= linearDepth;
+ return retVal;
+}
+
float2 TimewarpTexCoordToWarpedPos(float2 inTexCoord, float4x4 rotMat)
{
// Vertex inputs are in TanEyeAngle space for the R,G,B channels (i.e. after chromatic aberration and distortion).
// These are now "real world" vectors in direction (x,y,1) relative to the eye of the HMD.
// Apply the 3x3 timewarp rotation to these vectors.
- float3 transformed = float3( mul ( rotMat, float4(inTexCoord.xy, 1, 1) ).xyz);
+ float4 inputPos = PositionFromDepth(inTexCoord);
+ float3 transformed = float3( mul ( rotMat, inputPos ).xyz);
+
// Project them back onto the Z=1 plane of the rendered images.
float2 flattened = transformed.xy / transformed.z;
+
// Scale them into ([0,0.5],[0,1]) or ([0.5,0],[0,1]) UV lookup space (depending on eye)
return flattened * EyeToSourceUVScale + EyeToSourceUVOffset;
}
-void main(in float2 Position : POSITION,
- in float4 Color : COLOR0,
- in float2 TexCoord0 : TEXCOORD0,
- in float2 TexCoord1 : TEXCOORD1,
- in float2 TexCoord2 : TEXCOORD2,
- out float4 oPosition : SV_Position,
- out float1 oColor : COLOR,
- out float2 oTexCoord0 : TEXCOORD0,
- out float2 oTexCoord1 : TEXCOORD1,
- out float2 oTexCoord2 : TEXCOORD2)
+void main( in float2 Position : POSITION,
+ in float4 Color : COLOR0,
+ in float2 TexCoord0 : TEXCOORD0,
+ in float2 TexCoord1 : TEXCOORD1,
+ in float2 TexCoord2 : TEXCOORD2,
+ out float4 oPosition : SV_Position,
+ out float1 oColor : COLOR,
+ out float2 oTexCoord0 : TEXCOORD0,
+ out float2 oTexCoord1 : TEXCOORD1,
+ out float2 oTexCoord2 : TEXCOORD2)
{
oPosition.x = Position.x;
oPosition.y = Position.y;
oPosition.z = 0.5;
oPosition.w = 1.0;
-
+
float timewarpLerpFactor = Color.a;
float4x4 lerpedEyeRot = lerp(EyeRotationStart, EyeRotationEnd, timewarpLerpFactor);
// warped positions are a bit more involved, hence a separate function
- oTexCoord0 = TimewarpTexCoordToWarpedPos(TexCoord0, lerpedEyeRot);
+ oTexCoord0 = TimewarpTexCoordToWarpedPos(TexCoord0, lerpedEyeRot);
oTexCoord1 = TimewarpTexCoordToWarpedPos(TexCoord1, lerpedEyeRot);
oTexCoord2 = TimewarpTexCoordToWarpedPos(TexCoord2, lerpedEyeRot);
- oColor = Color.r; // Used for vignette fade.
+ oColor = Color.r; // Used for vignette fade.
}
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