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ARM Skia NEON patches - 19 - Intrinsics version of the Filter32 routines

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BitmapProcState: translate the filtering routines to intrinsics

Signed-off-by: Kévin PETIT <kevin.petit@arm.com>

BUG=
R=djsollen@google.com, mtklein@google.com

Author: kevin.petit.arm@gmail.com

Review URL: https://chromiumcodereview.appspot.com/21915004

git-svn-id: http://skia.googlecode.com/svn/trunk@11246 2bbb7eff-a529-9590-31e7-b0007b416f81
This commit is contained in:
commit-bot@chromium.org 2013-09-13 12:39:09 +00:00
parent 4907b30312
commit 2db4eabb77
1 changed files with 59 additions and 55 deletions
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114
src/opts/SkBitmapProcState_filter_neon.h
View File

@ -7,82 +7,86 @@
*/
#include <arm_neon.h>
#include "SkColorPriv.h"
/*
Filter_32_opaque
There is no hard-n-fast rule that the filtering must produce
exact results for the color components, but if the 4 incoming colors are
all opaque, then the output color must also be opaque. Subsequent parts of
the drawing pipeline may rely on this (e.g. which blitrow proc to use).
* Filter_32_opaque
*
* There is no hard-n-fast rule that the filtering must produce
* exact results for the color components, but if the 4 incoming colors are
* all opaque, then the output color must also be opaque. Subsequent parts of
* the drawing pipeline may rely on this (e.g. which blitrow proc to use).
*/
static inline void Filter_32_opaque_neon(unsigned x, unsigned y,
SkPMColor a00, SkPMColor a01,
SkPMColor a10, SkPMColor a11,
SkPMColor *dst) {
asm volatile(
"vdup.8 d0, %[y] \n\t" // duplicate y into d0
"vmov.u8 d16, #16 \n\t" // set up constant in d16
"vsub.u8 d1, d16, d0 \n\t" // d1 = 16-y
uint8x8_t vy, vconst16_8, v16_y, vres;
uint16x4_t vx, vconst16_16, v16_x, tmp;
uint32x2_t va0, va1;
uint16x8_t tmp1, tmp2;
"vdup.32 d4, %[a00] \n\t" // duplicate a00 into d4
"vdup.32 d5, %[a10] \n\t" // duplicate a10 into d5
"vmov.32 d4[1], %[a01] \n\t" // set top of d4 to a01
"vmov.32 d5[1], %[a11] \n\t" // set top of d5 to a11
vy = vdup_n_u8(y); // duplicate y into vy
vconst16_8 = vmov_n_u8(16); // set up constant in vconst16_8
v16_y = vsub_u8(vconst16_8, vy); // v16_y = 16-y
"vmull.u8 q3, d4, d1 \n\t" // q3 = [a01|a00] * (16-y)
"vmull.u8 q0, d5, d0 \n\t" // q0 = [a11|a10] * y
va0 = vdup_n_u32(a00); // duplicate a00
va1 = vdup_n_u32(a10); // duplicate a10
va0 = vset_lane_u32(a01, va0, 1); // set top to a01
va1 = vset_lane_u32(a11, va1, 1); // set top to a11
"vdup.16 d5, %[x] \n\t" // duplicate x into d5
"vmov.u16 d16, #16 \n\t" // set up constant in d16
"vsub.u16 d3, d16, d5 \n\t" // d3 = 16-x
tmp1 = vmull_u8(vreinterpret_u8_u32(va0), v16_y); // tmp1 = [a01|a00] * (16-y)
tmp2 = vmull_u8(vreinterpret_u8_u32(va1), vy); // tmp2 = [a11|a10] * y
"vmul.i16 d4, d7, d5 \n\t" // d4 = a01 * x
"vmla.i16 d4, d1, d5 \n\t" // d4 += a11 * x
"vmla.i16 d4, d6, d3 \n\t" // d4 += a00 * (16-x)
"vmla.i16 d4, d0, d3 \n\t" // d4 += a10 * (16-x)
"vshrn.i16 d0, q2, #8 \n\t" // shift down result by 8
"vst1.32 {d0[0]}, [%[dst]] \n\t" // store result
:
: [x] "r" (x), [y] "r" (y), [a00] "r" (a00), [a01] "r" (a01), [a10] "r" (a10), [a11] "r" (a11), [dst] "r" (dst)
: "cc", "memory", "d0", "d1", "d3", "d4", "d5", "d6", "d7", "d16"
);
vx = vdup_n_u16(x); // duplicate x into vx
vconst16_16 = vmov_n_u16(16); // set up constant in vconst16_16
v16_x = vsub_u16(vconst16_16, vx); // v16_x = 16-x
tmp = vmul_u16(vget_high_u16(tmp1), vx); // tmp = a01 * x
tmp = vmla_u16(tmp, vget_high_u16(tmp2), vx); // tmp += a11 * x
tmp = vmla_u16(tmp, vget_low_u16(tmp1), v16_x); // tmp += a00 * (16-x)
tmp = vmla_u16(tmp, vget_low_u16(tmp2), v16_x); // tmp += a10 * (16-x)
vres = vshrn_n_u16(vcombine_u16(tmp, vcreate_u16(0)), 8); // shift down result by 8
vst1_lane_u32(dst, vreinterpret_u32_u8(vres), 0); // store result
}
static inline void Filter_32_alpha_neon(unsigned x, unsigned y,
SkPMColor a00, SkPMColor a01,
SkPMColor a10, SkPMColor a11,
SkPMColor *dst, uint16_t scale) {
asm volatile(
"vdup.8 d0, %[y] \n\t" // duplicate y into d0
"vmov.u8 d16, #16 \n\t" // set up constant in d16
"vsub.u8 d1, d16, d0 \n\t" // d1 = 16-y
uint8x8_t vy, vconst16_8, v16_y, vres;
uint16x4_t vx, vconst16_16, v16_x, tmp, vscale;
uint32x2_t va0, va1;
uint16x8_t tmp1, tmp2;
"vdup.32 d4, %[a00] \n\t" // duplicate a00 into d4
"vdup.32 d5, %[a10] \n\t" // duplicate a10 into d5
"vmov.32 d4[1], %[a01] \n\t" // set top of d4 to a01
"vmov.32 d5[1], %[a11] \n\t" // set top of d5 to a11
vy = vdup_n_u8(y); // duplicate y into vy
vconst16_8 = vmov_n_u8(16); // set up constant in vconst16_8
v16_y = vsub_u8(vconst16_8, vy); // v16_y = 16-y
"vmull.u8 q3, d4, d1 \n\t" // q3 = [a01|a00] * (16-y)
"vmull.u8 q0, d5, d0 \n\t" // q0 = [a11|a10] * y
va0 = vdup_n_u32(a00); // duplicate a00
va1 = vdup_n_u32(a10); // duplicate a10
va0 = vset_lane_u32(a01, va0, 1); // set top to a01
va1 = vset_lane_u32(a11, va1, 1); // set top to a11
"vdup.16 d5, %[x] \n\t" // duplicate x into d5
"vmov.u16 d16, #16 \n\t" // set up constant in d16
"vsub.u16 d3, d16, d5 \n\t" // d3 = 16-x
tmp1 = vmull_u8(vreinterpret_u8_u32(va0), v16_y); // tmp1 = [a01|a00] * (16-y)
tmp2 = vmull_u8(vreinterpret_u8_u32(va1), vy); // tmp2 = [a11|a10] * y
"vmul.i16 d4, d7, d5 \n\t" // d4 = a01 * x
"vmla.i16 d4, d1, d5 \n\t" // d4 += a11 * x
"vmla.i16 d4, d6, d3 \n\t" // d4 += a00 * (16-x)
"vmla.i16 d4, d0, d3 \n\t" // d4 += a10 * (16-x)
"vdup.16 d3, %[scale] \n\t" // duplicate scale into d3
"vshr.u16 d4, d4, #8 \n\t" // shift down result by 8
"vmul.i16 d4, d4, d3 \n\t" // multiply result by scale
"vshrn.i16 d0, q2, #8 \n\t" // shift down result by 8
"vst1.32 {d0[0]}, [%[dst]] \n\t" // store result
:
: [x] "r" (x), [y] "r" (y), [a00] "r" (a00), [a01] "r" (a01), [a10] "r" (a10), [a11] "r" (a11), [dst] "r" (dst), [scale] "r" (scale)
: "cc", "memory", "d0", "d1", "d3", "d4", "d5", "d6", "d7", "d16"
);
vx = vdup_n_u16(x); // duplicate x into vx
vconst16_16 = vmov_n_u16(16); // set up constant in vconst16_16
v16_x = vsub_u16(vconst16_16, vx); // v16_x = 16-x
tmp = vmul_u16(vget_high_u16(tmp1), vx); // tmp = a01 * x
tmp = vmla_u16(tmp, vget_high_u16(tmp2), vx); // tmp += a11 * x
tmp = vmla_u16(tmp, vget_low_u16(tmp1), v16_x); // tmp += a00 * (16-x)
tmp = vmla_u16(tmp, vget_low_u16(tmp2), v16_x); // tmp += a10 * (16-x)
vscale = vdup_n_u16(scale); // duplicate scale
tmp = vshr_n_u16(tmp, 8); // shift down result by 8
tmp = vmul_u16(tmp, vscale); // multiply result by scale
vres = vshrn_n_u16(vcombine_u16(tmp, vcreate_u16(0)), 8); // shift down result by 8
vst1_lane_u32(dst, vreinterpret_u32_u8(vres), 0); // store result
}