The Tor Browser: gfx/layers/d3d11/CompositorD3D11.fx@129ffea94266 (annotated)

gfx/layers/d3d11/CompositorD3D11.fx@129ffea94266 (annotated)

gfx/layers/d3d11/CompositorD3D11.fx

Sat, 03 Jan 2015 20:18:00 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Sat, 03 Jan 2015 20:18:00 +0100
branch: TOR_BUG_3246
changeset 7: 129ffea94266
permissions: -rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 typedef float4 rect;
 float4x4 mLayerTransform : register(vs, c0);
 float4x4 mProjection : register(vs, c4);
 float4 vRenderTargetOffset : register(vs, c8);
 rect vTextureCoords : register(vs, c9);
 rect vLayerQuad : register(vs, c10);
 rect vMaskQuad : register(vs, c11);
 float4 fLayerColor : register(ps, c0);
 float fLayerOpacity : register(ps, c1);
 sampler sSampler : register(ps, s0);
 Texture2D tRGB;
 Texture2D tY;
 Texture2D tCb;
 Texture2D tCr;
 Texture2D tRGBWhite;
 // Always bind this to slot 3 since this is always available!
 Texture2D tMask : register(ps, t3);
 struct VS_INPUT {
   float2 vPosition : POSITION;
 };
 struct VS_OUTPUT {
   float4 vPosition : SV_Position;
   float2 vTexCoords : TEXCOORD0;
 };
 struct VS_MASK_OUTPUT {
   float4 vPosition : SV_Position;
   float2 vTexCoords : TEXCOORD0;
   float2 vMaskCoords : TEXCOORD1;
 };
 struct VS_MASK_3D_OUTPUT {
   float4 vPosition : SV_Position;
   float2 vTexCoords : TEXCOORD0;
   float3 vMaskCoords : TEXCOORD1;
 };
 struct PS_OUTPUT {
   float4 vSrc;
   float4 vAlpha;
 };
 float2 TexCoords(const float2 aPosition)
 {
   float2 result;
   const float2 size = vTextureCoords.zw;
   result.x = vTextureCoords.x + aPosition.x * size.x;
   result.y = vTextureCoords.y + aPosition.y * size.y;
   return result;
 }
 SamplerState LayerTextureSamplerLinear
 {
     Filter = MIN_MAG_MIP_LINEAR;
     AddressU = Clamp;
     AddressV = Clamp;
 };
 float4 TransformedPosition(float2 aInPosition)
 {
   // the current vertex's position on the quad
   float4 position = float4(0, 0, 0, 1);
   // We use 4 component floats to uniquely describe a rectangle, by the structure
   // of x, y, width, height. This allows us to easily generate the 4 corners
   // of any rectangle from the 4 corners of the 0,0-1,1 quad that we use as the
   // stream source for our LayerQuad vertex shader. We do this by doing:
   // Xout = x + Xin * width
   // Yout = y + Yin * height
   float2 size = vLayerQuad.zw;
   position.x = vLayerQuad.x + aInPosition.x * size.x;
   position.y = vLayerQuad.y + aInPosition.y * size.y;
   position = mul(mLayerTransform, position);
   return position;
 }
 float4 VertexPosition(float4 aTransformedPosition)
 {
   float4 result;
   result.w = aTransformedPosition.w;
   result.xyz = aTransformedPosition.xyz / aTransformedPosition.w;
   result -= vRenderTargetOffset;
   result.xyz *= result.w;
   result = mul(mProjection, result);
   return result;
 }
 VS_OUTPUT LayerQuadVS(const VS_INPUT aVertex)
 {
   VS_OUTPUT outp;
   float4 position = TransformedPosition(aVertex.vPosition);
   outp.vPosition = VertexPosition(position);
   outp.vTexCoords = TexCoords(aVertex.vPosition.xy);
   return outp;
 }
 VS_MASK_OUTPUT LayerQuadMaskVS(const VS_INPUT aVertex)
 {
   VS_MASK_OUTPUT outp;
   float4 position = TransformedPosition(aVertex.vPosition);
   outp.vPosition = VertexPosition(position);
   // calculate the position on the mask texture
   outp.vMaskCoords.x = (position.x - vMaskQuad.x) / vMaskQuad.z;
   outp.vMaskCoords.y = (position.y - vMaskQuad.y) / vMaskQuad.w;
   outp.vTexCoords = TexCoords(aVertex.vPosition.xy);
   return outp;
 }
 VS_MASK_3D_OUTPUT LayerQuadMask3DVS(const VS_INPUT aVertex)
 {
   VS_MASK_3D_OUTPUT outp;
   float4 position = TransformedPosition(aVertex.vPosition);
   outp.vPosition = VertexPosition(position);
   // calculate the position on the mask texture
   position.xyz /= position.w;
   outp.vMaskCoords.x = (position.x - vMaskQuad.x) / vMaskQuad.z;
   outp.vMaskCoords.y = (position.y - vMaskQuad.y) / vMaskQuad.w;
   // We use the w coord to do non-perspective correct interpolation:
   // the quad might be transformed in 3D, in which case it will have some
   // perspective. The graphics card will do perspective-correct interpolation
   // of the texture, but our mask is already transformed and so we require
   // linear interpolation. Therefore, we must correct the interpolation
   // ourselves, we do this by multiplying all coords by w here, and dividing by
   // w in the pixel shader (post-interpolation), we pass w in outp.vMaskCoords.z.
   // See http://en.wikipedia.org/wiki/Texture_mapping#Perspective_correctness
   outp.vMaskCoords.z = 1;
   outp.vMaskCoords *= position.w;
   outp.vTexCoords = TexCoords(aVertex.vPosition.xy);
   return outp;
 }
 float4 RGBAShaderMask(const VS_MASK_OUTPUT aVertex) : SV_Target
 {
   float2 maskCoords = aVertex.vMaskCoords;
   float mask = tMask.Sample(sSampler, maskCoords).a;
   return tRGB.Sample(sSampler, aVertex.vTexCoords) * fLayerOpacity * mask;
 }
 float4 RGBAShaderMask3D(const VS_MASK_3D_OUTPUT aVertex) : SV_Target
 {
   float2 maskCoords = aVertex.vMaskCoords.xy / aVertex.vMaskCoords.z;
   float mask = tMask.Sample(LayerTextureSamplerLinear, maskCoords).a;
   return tRGB.Sample(sSampler, aVertex.vTexCoords) * fLayerOpacity * mask;
 }
 float4 RGBShaderMask(const VS_MASK_OUTPUT aVertex) : SV_Target
 {
   float4 result;
   result = tRGB.Sample(sSampler, aVertex.vTexCoords) * fLayerOpacity;
   result.a = fLayerOpacity;
   float2 maskCoords = aVertex.vMaskCoords;
   float mask = tMask.Sample(sSampler, maskCoords).a;
   return result * mask;
 }
 float4 CalculateYCbCrColor(const float2 aTexCoords)
 {
   float4 yuv;
   float4 color;
   yuv.r = tCr.Sample(sSampler, aTexCoords).a - 0.5;
   yuv.g = tY.Sample(sSampler, aTexCoords).a - 0.0625;
   yuv.b = tCb.Sample(sSampler, aTexCoords).a - 0.5;
   color.r = yuv.g * 1.164 + yuv.r * 1.596;
   color.g = yuv.g * 1.164 - 0.813 * yuv.r - 0.391 * yuv.b;
   color.b = yuv.g * 1.164 + yuv.b * 2.018;
   color.a = 1.0f;
   return color;
 }
 float4 YCbCrShaderMask(const VS_MASK_OUTPUT aVertex) : SV_Target
 {
   float2 maskCoords = aVertex.vMaskCoords;
   float mask = tMask.Sample(sSampler, maskCoords).a;
   return CalculateYCbCrColor(aVertex.vTexCoords) * fLayerOpacity * mask;
 }
 PS_OUTPUT ComponentAlphaShaderMask(const VS_MASK_OUTPUT aVertex) : SV_Target
 {
   PS_OUTPUT result;
   result.vSrc = tRGB.Sample(sSampler, aVertex.vTexCoords);
   result.vAlpha = 1.0 - tRGBWhite.Sample(sSampler, aVertex.vTexCoords) + result.vSrc;
   result.vSrc.a = result.vAlpha.g;
   float2 maskCoords = aVertex.vMaskCoords;
   float mask = tMask.Sample(sSampler, maskCoords).a;
   result.vSrc *= fLayerOpacity * mask;
   result.vAlpha *= fLayerOpacity * mask;
   return result;
 }
 float4 SolidColorShaderMask(const VS_MASK_OUTPUT aVertex) : SV_Target
 {
   float2 maskCoords = aVertex.vMaskCoords;
   float mask = tMask.Sample(sSampler, maskCoords).a;
   return fLayerColor * mask;
 }
 /*
  *  Un-masked versions
  *************************************************************
  */
 float4 RGBAShader(const VS_OUTPUT aVertex) : SV_Target
 {
   return tRGB.Sample(sSampler, aVertex.vTexCoords) * fLayerOpacity;
 }
 float4 RGBShader(const VS_OUTPUT aVertex) : SV_Target
 {
   float4 result;
   result = tRGB.Sample(sSampler, aVertex.vTexCoords) * fLayerOpacity;
   result.a = fLayerOpacity;
   return result;
 }
 float4 YCbCrShader(const VS_OUTPUT aVertex) : SV_Target
 {
   return CalculateYCbCrColor(aVertex.vTexCoords) * fLayerOpacity;
 }
 PS_OUTPUT ComponentAlphaShader(const VS_OUTPUT aVertex) : SV_Target
 {
   PS_OUTPUT result;
   result.vSrc = tRGB.Sample(sSampler, aVertex.vTexCoords);
   result.vAlpha = 1.0 - tRGBWhite.Sample(sSampler, aVertex.vTexCoords) + result.vSrc;
   result.vSrc.a = result.vAlpha.g;
   result.vSrc *= fLayerOpacity;
   result.vAlpha *= fLayerOpacity;
   return result;
 }
 float4 SolidColorShader(const VS_OUTPUT aVertex) : SV_Target
 {
   return fLayerColor;
 }

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gfx/layers/d3d11/CompositorD3D11.fx@129ffea94266 (annotated)

gfx/layers/d3d11/CompositorD3D11.fx