The Tor Browser: gfx/angle/src/libGLESv2/renderer/generatemip.h@129ffea94266 (annotated)

gfx/angle/src/libGLESv2/renderer/generatemip.h@129ffea94266 (annotated)

gfx/angle/src/libGLESv2/renderer/generatemip.h

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.

 //
 // Copyright (c) 2002-2012 The ANGLE Project Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // generatemip.h: Defines the GenerateMip function, templated on the format
 // type of the image for which mip levels are being generated.
 #ifndef LIBGLESV2_RENDERER_GENERATEMIP_H_
 #define LIBGLESV2_RENDERER_GENERATEMIP_H_
 #include "libGLESv2/mathutil.h"
 namespace rx
 {
 struct L8
 {
     unsigned char L;
     static void average(L8 *dst, const L8 *src1, const L8 *src2)
     {
         dst->L = ((src1->L ^ src2->L) >> 1) + (src1->L & src2->L);
     }
 };
 typedef L8 R8; // R8 type is functionally equivalent for mip purposes
 typedef L8 A8; // A8 type is functionally equivalent for mip purposes
 struct A8L8
 {
     unsigned char L;
     unsigned char A;
     static void average(A8L8 *dst, const A8L8 *src1, const A8L8 *src2)
     {
         *(unsigned short*)dst = (((*(unsigned short*)src1 ^ *(unsigned short*)src2) & 0xFEFE) >> 1) + (*(unsigned short*)src1 & *(unsigned short*)src2);
     }
 };
 typedef A8L8 R8G8; // R8G8 type is functionally equivalent for mip purposes
 struct A8R8G8B8
 {
     unsigned char B;
     unsigned char G;
     unsigned char R;
     unsigned char A;
     static void average(A8R8G8B8 *dst, const A8R8G8B8 *src1, const A8R8G8B8 *src2)
     {
         *(unsigned int*)dst = (((*(unsigned int*)src1 ^ *(unsigned int*)src2) & 0xFEFEFEFE) >> 1) + (*(unsigned int*)src1 & *(unsigned int*)src2);
     }
 };
 typedef A8R8G8B8 R8G8B8A8; // R8G8B8A8 type is functionally equivalent for mip purposes
 struct A16B16G16R16F
 {
     unsigned short R;
     unsigned short G;
     unsigned short B;
     unsigned short A;
     static void average(A16B16G16R16F *dst, const A16B16G16R16F *src1, const A16B16G16R16F *src2)
     {
         dst->R = gl::float32ToFloat16((gl::float16ToFloat32(src1->R) + gl::float16ToFloat32(src2->R)) * 0.5f);
         dst->G = gl::float32ToFloat16((gl::float16ToFloat32(src1->G) + gl::float16ToFloat32(src2->G)) * 0.5f);
         dst->B = gl::float32ToFloat16((gl::float16ToFloat32(src1->B) + gl::float16ToFloat32(src2->B)) * 0.5f);
         dst->A = gl::float32ToFloat16((gl::float16ToFloat32(src1->A) + gl::float16ToFloat32(src2->A)) * 0.5f);
     }
 };
 struct R16F
 {
     unsigned short R;
     static void average(R16F *dst, const R16F *src1, const R16F *src2)
     {
         dst->R = gl::float32ToFloat16((gl::float16ToFloat32(src1->R) + gl::float16ToFloat32(src2->R)) * 0.5f);
     }
 };
 struct R16G16F
 {
     unsigned short R;
     unsigned short G;
     static void average(R16G16F *dst, const R16G16F *src1, const R16G16F *src2)
     {
         dst->R = gl::float32ToFloat16((gl::float16ToFloat32(src1->R) + gl::float16ToFloat32(src2->R)) * 0.5f);
         dst->G = gl::float32ToFloat16((gl::float16ToFloat32(src1->G) + gl::float16ToFloat32(src2->G)) * 0.5f);
     }
 };
 struct A32B32G32R32F
 {
     float R;
     float G;
     float B;
     float A;
     static void average(A32B32G32R32F *dst, const A32B32G32R32F *src1, const A32B32G32R32F *src2)
     {
         dst->R = (src1->R + src2->R) * 0.5f;
         dst->G = (src1->G + src2->G) * 0.5f;
         dst->B = (src1->B + src2->B) * 0.5f;
         dst->A = (src1->A + src2->A) * 0.5f;
     }
 };
 struct R32F
 {
     float R;
     static void average(R32F *dst, const R32F *src1, const R32F *src2)
     {
         dst->R = (src1->R + src2->R) * 0.5f;
     }
 };
 struct R32G32F
 {
     float R;
     float G;
     static void average(R32G32F *dst, const R32G32F *src1, const R32G32F *src2)
     {
         dst->R = (src1->R + src2->R) * 0.5f;
         dst->G = (src1->G + src2->G) * 0.5f;
     }
 };
 struct R32G32B32F
 {
     float R;
     float G;
     float B;
     static void average(R32G32B32F *dst, const R32G32B32F *src1, const R32G32B32F *src2)
     {
         dst->R = (src1->R + src2->R) * 0.5f;
         dst->G = (src1->G + src2->G) * 0.5f;
         dst->B = (src1->B + src2->B) * 0.5f;
     }
 };
 template <typename T>
 static void GenerateMip(unsigned int sourceWidth, unsigned int sourceHeight,
                         const unsigned char *sourceData, int sourcePitch,
                         unsigned char *destData, int destPitch)
 {
     unsigned int mipWidth = std::max(1U, sourceWidth >> 1);
     unsigned int mipHeight = std::max(1U, sourceHeight >> 1);
     if (sourceHeight == 1)
     {
         ASSERT(sourceWidth != 1);
         const T *src = (const T*)sourceData;
         T *dst = (T*)destData;
         for (unsigned int x = 0; x < mipWidth; x++)
         {
             T::average(&dst[x], &src[x * 2], &src[x * 2 + 1]);
         }
     }
     else if (sourceWidth == 1)
     {
         ASSERT(sourceHeight != 1);
         for (unsigned int y = 0; y < mipHeight; y++)
         {
             const T *src0 = (const T*)(sourceData + y * 2 * sourcePitch);
             const T *src1 = (const T*)(sourceData + y * 2 * sourcePitch + sourcePitch);
             T *dst = (T*)(destData + y * destPitch);
             T::average(dst, src0, src1);
         }
     }
     else
     {
         for (unsigned int y = 0; y < mipHeight; y++)
         {
             const T *src0 = (const T*)(sourceData + y * 2 * sourcePitch);
             const T *src1 = (const T*)(sourceData + y * 2 * sourcePitch + sourcePitch);
             T *dst = (T*)(destData + y * destPitch);
             for (unsigned int x = 0; x < mipWidth; x++)
             {
                 T tmp0;
                 T tmp1;
                 T::average(&tmp0, &src0[x * 2], &src0[x * 2 + 1]);
                 T::average(&tmp1, &src1[x * 2], &src1[x * 2 + 1]);
                 T::average(&dst[x], &tmp0, &tmp1);
             }
         }
     }
 }
 }
 #endif // LIBGLESV2_RENDERER_GENERATEMIP_H_

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gfx/angle/src/libGLESv2/renderer/generatemip.h@129ffea94266 (annotated)

gfx/angle/src/libGLESv2/renderer/generatemip.h