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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"
#include "SkBitmapProcState_utils.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);
#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) {
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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