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/* 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"
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);
static unsigned SK_USHIFT16(unsigned x) {
return x >> 16;
}
#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_LOW_BITS(fx, max) (((fx) >> 12) & 0xF)
#define TILEY_LOW_BITS(fy, max) (((fy) >> 12) & 0xF)
#define CHECK_FOR_DECAL
#include "SkBitmapProcState_matrix_clamp_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_LOW_BITS(fx, max) ((((fx) & 0xFFFF) * ((max) + 1) >> 12) & 0xF)
#define TILEY_LOW_BITS(fy, max) ((((fy) & 0xFFFF) * ((max) + 1) >> 12) & 0xF)
#include "SkBitmapProcState_matrix_repeat_neon.h"
void decal_nofilter_scale_neon(uint32_t dst[], SkFixed fx, SkFixed dx, int count)
{
int i;
if (count >= 8) {
/* SkFixed is 16.16 fixed point */
SkFixed dx2 = dx+dx;
SkFixed dx4 = dx2+dx2;
SkFixed dx8 = dx4+dx4;
/* now build fx/fx+dx/fx+2dx/fx+3dx */
SkFixed fx1, fx2, fx3;
int32x4_t lbase, hbase;
uint16_t *dst16 = (uint16_t *)dst;
fx1 = fx+dx;
fx2 = fx1+dx;
fx3 = fx2+dx;
/* avoid an 'lbase unitialized' warning */
lbase = vdupq_n_s32(fx);
lbase = vsetq_lane_s32(fx1, lbase, 1);
lbase = vsetq_lane_s32(fx2, lbase, 2);
lbase = vsetq_lane_s32(fx3, lbase, 3);
hbase = vaddq_s32(lbase, vdupq_n_s32(dx4));
/* take upper 16 of each, store, and bump everything */
do {
int32x4_t lout, hout;
uint16x8_t hi16;
lout = lbase;
hout = hbase;
/* gets hi's of all louts then hi's of all houts */
asm ("vuzpq.16 %q0, %q1" : "+w" (lout), "+w" (hout));
hi16 = vreinterpretq_u16_s32(hout);
vst1q_u16(dst16, hi16);
/* on to the next */
lbase = vaddq_s32 (lbase, vdupq_n_s32(dx8));
hbase = vaddq_s32 (hbase, vdupq_n_s32(dx8));
dst16 += 8;
count -= 8;
fx += dx8;
} while (count >= 8);
dst = (uint32_t *) dst16;
}
uint16_t* xx = (uint16_t*)dst;
for (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) {
int32x4_t wide_fx;
int32x4_t wide_fx2;
int32x4_t wide_dx8 = vdupq_n_s32(dx*8);
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(dx+dx+dx+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 = vorrq_s32(wide_out,
vaddq_s32(vshrq_n_s32(wide_fx,16), vdupq_n_s32(1)));
wide_out2 = vshlq_n_s32(vshrq_n_s32(wide_fx2, 12), 14);
wide_out2 = vorrq_s32(wide_out2,
vaddq_s32(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 += dx*8;
wide_fx = vaddq_s32(wide_fx, wide_dx8);
wide_fx2 = vaddq_s32(wide_fx2, wide_dx8);
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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