зеркало из https://github.com/mozilla/gecko-dev.git
75 строки
2.3 KiB
HLSL
75 строки
2.3 KiB
HLSL
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* These constants should match mozilla:gfx::VRDistortionConstants */
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float4 VREyeToSource : register(vs, c0);
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float4 VRDestinationScaleAndOffset : register(vs, c1);
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/* This is the input undistorted texture */
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Texture2D Texture : register(ps, t0);
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/* This maps to mozilla::gfx::VRDistortionVertex in gfxVR.h.
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* It's shared amongst all of the different rendering types;
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* some might not be in use for a particular distortion effect.
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*/
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struct VS_VR_INPUT {
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float2 vPosition : POSITION;
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float2 vTexCoord0 : TEXCOORD0;
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float2 vTexCoord1 : TEXCOORD1;
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float2 vTexCoord2 : TEXCOORD2;
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float4 vGenericAttribs : COLOR0;
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};
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struct VS_VR_OUTPUT {
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float4 vPosition : SV_Position;
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float3 vTexCoord0 : TEXCOORD0;
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float3 vTexCoord1 : TEXCOORD1;
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float3 vTexCoord2 : TEXCOORD2;
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float4 vGenericAttribs : COLOR;
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};
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SamplerState Linear
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{
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Filter = MIN_MAG_MIP_LINEAR;
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AddressU = Clamp;
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AddressV = Clamp;
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};
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/*
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* Oculus050 basic distortion, with chroma aberration correction
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*/
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VS_VR_OUTPUT Oculus050VRDistortionVS(const VS_VR_INPUT aVertex)
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{
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VS_VR_OUTPUT res;
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float2 tc0 = aVertex.vTexCoord0 * VREyeToSource.zw + VREyeToSource.xy;
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float2 tc1 = aVertex.vTexCoord1 * VREyeToSource.zw + VREyeToSource.xy;
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float2 tc2 = aVertex.vTexCoord2 * VREyeToSource.zw + VREyeToSource.xy;
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//res.vPosition.xy = aVertex.vPosition.xy;
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res.vPosition.xy = aVertex.vPosition.xy * VRDestinationScaleAndOffset.zw + VRDestinationScaleAndOffset.xy;
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res.vPosition.zw = float2(0.5, 1.0);
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res.vTexCoord0 = float3(tc0, 1);
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res.vTexCoord1 = float3(tc1, 1);
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res.vTexCoord2 = float3(tc2, 1);
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res.vGenericAttribs = aVertex.vGenericAttribs;
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return res;
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}
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float4 Oculus050VRDistortionPS(const VS_VR_OUTPUT aVertex) : SV_Target
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{
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float resR = Texture.Sample(Linear, aVertex.vTexCoord0.xy).r;
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float resG = Texture.Sample(Linear, aVertex.vTexCoord1.xy).g;
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float resB = Texture.Sample(Linear, aVertex.vTexCoord2.xy).b;
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return float4(resR * aVertex.vGenericAttribs.r,
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resG * aVertex.vGenericAttribs.r,
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resB * aVertex.vGenericAttribs.r,
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1.0);
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}
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