The Tor Browser: gfx/skia/trunk/src/opts/SkBitmapProcState_matrixProcs

gfx/skia/trunk/src/opts/SkBitmapProcState_matrixProcs_neon.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/opts/SkBitmapProcState_matrixProcs_neon.cpp

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.

 /* NEON optimized code (C) COPYRIGHT 2009 Motorola
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SkBitmapProcState.h"
 #include "SkPerspIter.h"
 #include "SkShader.h"
 #include "SkUtilsArm.h"
 #include "SkBitmapProcState_utils.h"
 #include <arm_neon.h>
 extern const SkBitmapProcState::MatrixProc ClampX_ClampY_Procs_neon[];
 extern const SkBitmapProcState::MatrixProc RepeatX_RepeatY_Procs_neon[];
 static void decal_nofilter_scale_neon(uint32_t dst[], SkFixed fx, SkFixed dx, int count);
 static void decal_filter_scale_neon(uint32_t dst[], SkFixed fx, SkFixed dx, int count);
 // TILEX_PROCF(fx, max)    SkClampMax((fx) >> 16, max)
 static inline int16x8_t sbpsm_clamp_tile8(int32x4_t low, int32x4_t high, unsigned max) {
     int16x8_t res;
     // get the hi 16s of all those 32s
     res = vuzpq_s16(vreinterpretq_s16_s32(low), vreinterpretq_s16_s32(high)).val[1];
     // clamp
     res = vmaxq_s16(res, vdupq_n_s16(0));
     res = vminq_s16(res, vdupq_n_s16(max));
     return res;
 }
 // TILEX_PROCF(fx, max)    SkClampMax((fx) >> 16, max)
 static inline int32x4_t sbpsm_clamp_tile4(int32x4_t f, unsigned max) {
     int32x4_t res;
     // get the hi 16s of all those 32s
     res = vshrq_n_s32(f, 16);
     // clamp
     res = vmaxq_s32(res, vdupq_n_s32(0));
     res = vminq_s32(res, vdupq_n_s32(max));
     return res;
 }
 // TILEY_LOW_BITS(fy, max)         (((fy) >> 12) & 0xF)
 static inline int32x4_t sbpsm_clamp_tile4_low_bits(int32x4_t fx) {
     int32x4_t ret;
     ret = vshrq_n_s32(fx, 12);
     /* We don't need the mask below because the caller will
      * overwrite the non-masked bits
      */
     //ret = vandq_s32(ret, vdupq_n_s32(0xF));
     return ret;
 }
 // TILEX_PROCF(fx, max) (((fx)&0xFFFF)*((max)+1)>> 16)
 static inline int16x8_t sbpsm_repeat_tile8(int32x4_t low, int32x4_t high, unsigned max) {
     uint16x8_t res;
     uint32x4_t tmpl, tmph;
     // get the lower 16 bits
     res = vuzpq_u16(vreinterpretq_u16_s32(low), vreinterpretq_u16_s32(high)).val[0];
     // bare multiplication, not SkFixedMul
     tmpl = vmull_u16(vget_low_u16(res), vdup_n_u16(max+1));
     tmph = vmull_u16(vget_high_u16(res), vdup_n_u16(max+1));
     // extraction of the 16 upper bits
     res = vuzpq_u16(vreinterpretq_u16_u32(tmpl), vreinterpretq_u16_u32(tmph)).val[1];
     return vreinterpretq_s16_u16(res);
 }
 // TILEX_PROCF(fx, max) (((fx)&0xFFFF)*((max)+1)>> 16)
 static inline int32x4_t sbpsm_repeat_tile4(int32x4_t f, unsigned max) {
     uint16x4_t res;
     uint32x4_t tmp;
     // get the lower 16 bits
     res = vmovn_u32(vreinterpretq_u32_s32(f));
     // bare multiplication, not SkFixedMul
     tmp = vmull_u16(res, vdup_n_u16(max+1));
     // extraction of the 16 upper bits
     tmp = vshrq_n_u32(tmp, 16);
     return vreinterpretq_s32_u32(tmp);
 }
 // TILEX_LOW_BITS(fx, max)         ((((fx) & 0xFFFF) * ((max) + 1) >> 12) & 0xF)
 static inline int32x4_t sbpsm_repeat_tile4_low_bits(int32x4_t fx, unsigned max) {
     uint16x4_t res;
     uint32x4_t tmp;
     int32x4_t ret;
     // get the lower 16 bits
     res = vmovn_u32(vreinterpretq_u32_s32(fx));
     // bare multiplication, not SkFixedMul
     tmp = vmull_u16(res, vdup_n_u16(max + 1));
     // shift and mask
     ret = vshrq_n_s32(vreinterpretq_s32_u32(tmp), 12);
     /* We don't need the mask below because the caller will
      * overwrite the non-masked bits
      */
     //ret = vandq_s32(ret, vdupq_n_s32(0xF));
     return ret;
 }
 #define MAKENAME(suffix)                ClampX_ClampY ## suffix ## _neon
 #define TILEX_PROCF(fx, max)            SkClampMax((fx) >> 16, max)
 #define TILEY_PROCF(fy, max)            SkClampMax((fy) >> 16, max)
 #define TILEX_PROCF_NEON8(l, h, max)    sbpsm_clamp_tile8(l, h, max)
 #define TILEY_PROCF_NEON8(l, h, max)    sbpsm_clamp_tile8(l, h, max)
 #define TILEX_PROCF_NEON4(fx, max)      sbpsm_clamp_tile4(fx, max)
 #define TILEY_PROCF_NEON4(fy, max)      sbpsm_clamp_tile4(fy, max)
 #define TILEX_LOW_BITS(fx, max)         (((fx) >> 12) & 0xF)
 #define TILEY_LOW_BITS(fy, max)         (((fy) >> 12) & 0xF)
 #define TILEX_LOW_BITS_NEON4(fx, max)   sbpsm_clamp_tile4_low_bits(fx)
 #define TILEY_LOW_BITS_NEON4(fy, max)   sbpsm_clamp_tile4_low_bits(fy)
 #define CHECK_FOR_DECAL
 #include "SkBitmapProcState_matrix_neon.h"
 #define MAKENAME(suffix)                RepeatX_RepeatY ## suffix ## _neon
 #define TILEX_PROCF(fx, max)            SK_USHIFT16(((fx) & 0xFFFF) * ((max) + 1))
 #define TILEY_PROCF(fy, max)            SK_USHIFT16(((fy) & 0xFFFF) * ((max) + 1))
 #define TILEX_PROCF_NEON8(l, h, max)    sbpsm_repeat_tile8(l, h, max)
 #define TILEY_PROCF_NEON8(l, h, max)    sbpsm_repeat_tile8(l, h, max)
 #define TILEX_PROCF_NEON4(fx, max)      sbpsm_repeat_tile4(fx, max)
 #define TILEY_PROCF_NEON4(fy, max)      sbpsm_repeat_tile4(fy, max)
 #define TILEX_LOW_BITS(fx, max)         ((((fx) & 0xFFFF) * ((max) + 1) >> 12) & 0xF)
 #define TILEY_LOW_BITS(fy, max)         ((((fy) & 0xFFFF) * ((max) + 1) >> 12) & 0xF)
 #define TILEX_LOW_BITS_NEON4(fx, max)   sbpsm_repeat_tile4_low_bits(fx, max)
 #define TILEY_LOW_BITS_NEON4(fy, max)   sbpsm_repeat_tile4_low_bits(fy, max)
 #include "SkBitmapProcState_matrix_neon.h"
 void decal_nofilter_scale_neon(uint32_t dst[], SkFixed fx, SkFixed dx, int count) {
     if (count >= 8) {
         // SkFixed is 16.16 fixed point
         SkFixed dx8 = dx * 8;
         int32x4_t vdx8 = vdupq_n_s32(dx8);
         // setup lbase and hbase
         int32x4_t lbase, hbase;
         lbase = vdupq_n_s32(fx);
         lbase = vsetq_lane_s32(fx + dx, lbase, 1);
         lbase = vsetq_lane_s32(fx + dx + dx, lbase, 2);
         lbase = vsetq_lane_s32(fx + dx + dx + dx, lbase, 3);
         hbase = lbase + vdupq_n_s32(4 * dx);
         do {
             // store the upper 16 bits
             vst1q_u32(dst, vreinterpretq_u32_s16(
                 vuzpq_s16(vreinterpretq_s16_s32(lbase), vreinterpretq_s16_s32(hbase)).val[1]
             ));
             // on to the next group of 8
             lbase += vdx8;
             hbase += vdx8;
             dst += 4; // we did 8 elements but the result is twice smaller
             count -= 8;
             fx += dx8;
         } while (count >= 8);
     }
     uint16_t* xx = (uint16_t*)dst;
     for (int i = count; i > 0; --i) {
         *xx++ = SkToU16(fx >> 16); fx += dx;
     }
 }
 void decal_filter_scale_neon(uint32_t dst[], SkFixed fx, SkFixed dx, int count) {
     if (count >= 8) {
         SkFixed dx8 = dx * 8;
         int32x4_t vdx8 = vdupq_n_s32(dx8);
         int32x4_t wide_fx, wide_fx2;
         wide_fx = vdupq_n_s32(fx);
         wide_fx = vsetq_lane_s32(fx + dx, wide_fx, 1);
         wide_fx = vsetq_lane_s32(fx + dx + dx, wide_fx, 2);
         wide_fx = vsetq_lane_s32(fx + dx + dx + dx, wide_fx, 3);
         wide_fx2 = vaddq_s32(wide_fx, vdupq_n_s32(4 * dx));
         while (count >= 8) {
             int32x4_t wide_out;
             int32x4_t wide_out2;
             wide_out = vshlq_n_s32(vshrq_n_s32(wide_fx, 12), 14);
             wide_out = wide_out | (vshrq_n_s32(wide_fx,16) + vdupq_n_s32(1));
             wide_out2 = vshlq_n_s32(vshrq_n_s32(wide_fx2, 12), 14);
             wide_out2 = wide_out2 | (vshrq_n_s32(wide_fx2,16) + vdupq_n_s32(1));
             vst1q_u32(dst, vreinterpretq_u32_s32(wide_out));
             vst1q_u32(dst+4, vreinterpretq_u32_s32(wide_out2));
             dst += 8;
             fx += dx8;
             wide_fx += vdx8;
             wide_fx2 += vdx8;
             count -= 8;
         }
     }
     if (count & 1)
     {
         SkASSERT((fx >> (16 + 14)) == 0);
         *dst++ = (fx >> 12 << 14) | ((fx >> 16) + 1);
         fx += dx;
     }
     while ((count -= 2) >= 0)
     {
         SkASSERT((fx >> (16 + 14)) == 0);
         *dst++ = (fx >> 12 << 14) | ((fx >> 16) + 1);
         fx += dx;
         *dst++ = (fx >> 12 << 14) | ((fx >> 16) + 1);
         fx += dx;
     }
 }

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gfx/skia/trunk/src/opts/SkBitmapProcState_matrixProcs_neon.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/opts/SkBitmapProcState_matrixProcs_neon.cpp