1 /* Copyright 2009 Motorola
2 *
3 * Use of this source code is governed by a BSD-style license that can be
4 * found in the LICENSE file.
5 */
6
7 #include "SkBitmapProcState.h"
8 #include "SkShader.h"
9 #include "SkUtilsArm.h"
10 #include "SkBitmapProcState_utils.h"
11
12 #include <arm_neon.h>
13
14 extern const SkBitmapProcState::MatrixProc ClampX_ClampY_Procs_neon[];
15 extern const SkBitmapProcState::MatrixProc RepeatX_RepeatY_Procs_neon[];
16
17 static void decal_nofilter_scale_neon(uint32_t dst[], SkFixed fx, SkFixed dx, int count);
18 static void decal_filter_scale_neon(uint32_t dst[], SkFixed fx, SkFixed dx, int count);
19
20 // TILEX_PROCF(fx, max) SkClampMax((fx) >> 16, max)
sbpsm_clamp_tile8(int32x4_t low,int32x4_t high,unsigned max)21 static inline int16x8_t sbpsm_clamp_tile8(int32x4_t low, int32x4_t high, unsigned max) {
22 int16x8_t res;
23
24 // get the hi 16s of all those 32s
25 res = vuzpq_s16(vreinterpretq_s16_s32(low), vreinterpretq_s16_s32(high)).val[1];
26
27 // clamp
28 res = vmaxq_s16(res, vdupq_n_s16(0));
29 res = vminq_s16(res, vdupq_n_s16(max));
30
31 return res;
32 }
33
34 // TILEX_PROCF(fx, max) SkClampMax((fx) >> 16, max)
sbpsm_clamp_tile4(int32x4_t f,unsigned max)35 static inline int32x4_t sbpsm_clamp_tile4(int32x4_t f, unsigned max) {
36 int32x4_t res;
37
38 // get the hi 16s of all those 32s
39 res = vshrq_n_s32(f, 16);
40
41 // clamp
42 res = vmaxq_s32(res, vdupq_n_s32(0));
43 res = vminq_s32(res, vdupq_n_s32(max));
44
45 return res;
46 }
47
48 // EXTRACT_LOW_BITS(fy, max) (((fy) >> 12) & 0xF)
sbpsm_clamp_tile4_low_bits(int32x4_t fx)49 static inline int32x4_t sbpsm_clamp_tile4_low_bits(int32x4_t fx) {
50 int32x4_t ret;
51
52 ret = vshrq_n_s32(fx, 12);
53
54 /* We don't need the mask below because the caller will
55 * overwrite the non-masked bits
56 */
57 //ret = vandq_s32(ret, vdupq_n_s32(0xF));
58
59 return ret;
60 }
61
62 // TILEX_PROCF(fx, max) (((fx)&0xFFFF)*((max)+1)>> 16)
sbpsm_repeat_tile8(int32x4_t low,int32x4_t high,unsigned max)63 static inline int16x8_t sbpsm_repeat_tile8(int32x4_t low, int32x4_t high, unsigned max) {
64 uint16x8_t res;
65 uint32x4_t tmpl, tmph;
66
67 // get the lower 16 bits
68 res = vuzpq_u16(vreinterpretq_u16_s32(low), vreinterpretq_u16_s32(high)).val[0];
69
70 // bare multiplication, not SkFixedMul
71 tmpl = vmull_u16(vget_low_u16(res), vdup_n_u16(max+1));
72 tmph = vmull_u16(vget_high_u16(res), vdup_n_u16(max+1));
73
74 // extraction of the 16 upper bits
75 res = vuzpq_u16(vreinterpretq_u16_u32(tmpl), vreinterpretq_u16_u32(tmph)).val[1];
76
77 return vreinterpretq_s16_u16(res);
78 }
79
80 // TILEX_PROCF(fx, max) (((fx)&0xFFFF)*((max)+1)>> 16)
sbpsm_repeat_tile4(int32x4_t f,unsigned max)81 static inline int32x4_t sbpsm_repeat_tile4(int32x4_t f, unsigned max) {
82 uint16x4_t res;
83 uint32x4_t tmp;
84
85 // get the lower 16 bits
86 res = vmovn_u32(vreinterpretq_u32_s32(f));
87
88 // bare multiplication, not SkFixedMul
89 tmp = vmull_u16(res, vdup_n_u16(max+1));
90
91 // extraction of the 16 upper bits
92 tmp = vshrq_n_u32(tmp, 16);
93
94 return vreinterpretq_s32_u32(tmp);
95 }
96
97 // EXTRACT_LOW_BITS(fx, max) ((((fx) & 0xFFFF) * ((max) + 1) >> 12) & 0xF)
sbpsm_repeat_tile4_low_bits(int32x4_t fx,unsigned max)98 static inline int32x4_t sbpsm_repeat_tile4_low_bits(int32x4_t fx, unsigned max) {
99 uint16x4_t res;
100 uint32x4_t tmp;
101 int32x4_t ret;
102
103 // get the lower 16 bits
104 res = vmovn_u32(vreinterpretq_u32_s32(fx));
105
106 // bare multiplication, not SkFixedMul
107 tmp = vmull_u16(res, vdup_n_u16(max + 1));
108
109 // shift and mask
110 ret = vshrq_n_s32(vreinterpretq_s32_u32(tmp), 12);
111
112 /* We don't need the mask below because the caller will
113 * overwrite the non-masked bits
114 */
115 //ret = vandq_s32(ret, vdupq_n_s32(0xF));
116
117 return ret;
118 }
119
120 #define MAKENAME(suffix) ClampX_ClampY ## suffix ## _neon
121 #define TILEX_PROCF(fx, max) SkClampMax((fx) >> 16, max)
122 #define TILEY_PROCF(fy, max) SkClampMax((fy) >> 16, max)
123 #define TILEX_PROCF_NEON8(l, h, max) sbpsm_clamp_tile8(l, h, max)
124 #define TILEY_PROCF_NEON8(l, h, max) sbpsm_clamp_tile8(l, h, max)
125 #define TILEX_PROCF_NEON4(fx, max) sbpsm_clamp_tile4(fx, max)
126 #define TILEY_PROCF_NEON4(fy, max) sbpsm_clamp_tile4(fy, max)
127 #define EXTRACT_LOW_BITS(v, max) (((v) >> 12) & 0xF)
128 #define EXTRACT_LOW_BITS_NEON4(v, max) sbpsm_clamp_tile4_low_bits(v)
129 #define CHECK_FOR_DECAL
130 #include "SkBitmapProcState_matrix_neon.h"
131
132 #define MAKENAME(suffix) RepeatX_RepeatY ## suffix ## _neon
133 #define TILEX_PROCF(fx, max) SK_USHIFT16(((fx) & 0xFFFF) * ((max) + 1))
134 #define TILEY_PROCF(fy, max) SK_USHIFT16(((fy) & 0xFFFF) * ((max) + 1))
135 #define TILEX_PROCF_NEON8(l, h, max) sbpsm_repeat_tile8(l, h, max)
136 #define TILEY_PROCF_NEON8(l, h, max) sbpsm_repeat_tile8(l, h, max)
137 #define TILEX_PROCF_NEON4(fx, max) sbpsm_repeat_tile4(fx, max)
138 #define TILEY_PROCF_NEON4(fy, max) sbpsm_repeat_tile4(fy, max)
139 #define EXTRACT_LOW_BITS(v, max) ((((v) & 0xFFFF) * ((max) + 1) >> 12) & 0xF)
140 #define EXTRACT_LOW_BITS_NEON4(v, max) sbpsm_repeat_tile4_low_bits(v, max)
141 #include "SkBitmapProcState_matrix_neon.h"
142
143
144
decal_nofilter_scale_neon(uint32_t dst[],SkFixed fx,SkFixed dx,int count)145 void decal_nofilter_scale_neon(uint32_t dst[], SkFixed fx, SkFixed dx, int count) {
146 if (count >= 8) {
147 // SkFixed is 16.16 fixed point
148 SkFixed dx8 = dx * 8;
149 int32x4_t vdx8 = vdupq_n_s32(dx8);
150
151 // setup lbase and hbase
152 int32x4_t lbase, hbase;
153 lbase = vdupq_n_s32(fx);
154 lbase = vsetq_lane_s32(fx + dx, lbase, 1);
155 lbase = vsetq_lane_s32(fx + dx + dx, lbase, 2);
156 lbase = vsetq_lane_s32(fx + dx + dx + dx, lbase, 3);
157 hbase = lbase + vdupq_n_s32(4 * dx);
158
159 do {
160 // store the upper 16 bits
161 vst1q_u32(dst, vreinterpretq_u32_s16(
162 vuzpq_s16(vreinterpretq_s16_s32(lbase), vreinterpretq_s16_s32(hbase)).val[1]
163 ));
164
165 // on to the next group of 8
166 lbase += vdx8;
167 hbase += vdx8;
168 dst += 4; // we did 8 elements but the result is twice smaller
169 count -= 8;
170 fx += dx8;
171 } while (count >= 8);
172 }
173
174 uint16_t* xx = (uint16_t*)dst;
175 for (int i = count; i > 0; --i) {
176 *xx++ = SkToU16(fx >> 16); fx += dx;
177 }
178 }
179
decal_filter_scale_neon(uint32_t dst[],SkFixed fx,SkFixed dx,int count)180 void decal_filter_scale_neon(uint32_t dst[], SkFixed fx, SkFixed dx, int count) {
181 if (count >= 8) {
182 SkFixed dx8 = dx * 8;
183 int32x4_t vdx8 = vdupq_n_s32(dx8);
184
185 int32x4_t wide_fx, wide_fx2;
186 wide_fx = vdupq_n_s32(fx);
187 wide_fx = vsetq_lane_s32(fx + dx, wide_fx, 1);
188 wide_fx = vsetq_lane_s32(fx + dx + dx, wide_fx, 2);
189 wide_fx = vsetq_lane_s32(fx + dx + dx + dx, wide_fx, 3);
190
191 wide_fx2 = vaddq_s32(wide_fx, vdupq_n_s32(4 * dx));
192
193 while (count >= 8) {
194 int32x4_t wide_out;
195 int32x4_t wide_out2;
196
197 wide_out = vshlq_n_s32(vshrq_n_s32(wide_fx, 12), 14);
198 wide_out = wide_out | (vshrq_n_s32(wide_fx,16) + vdupq_n_s32(1));
199
200 wide_out2 = vshlq_n_s32(vshrq_n_s32(wide_fx2, 12), 14);
201 wide_out2 = wide_out2 | (vshrq_n_s32(wide_fx2,16) + vdupq_n_s32(1));
202
203 vst1q_u32(dst, vreinterpretq_u32_s32(wide_out));
204 vst1q_u32(dst+4, vreinterpretq_u32_s32(wide_out2));
205
206 dst += 8;
207 fx += dx8;
208 wide_fx += vdx8;
209 wide_fx2 += vdx8;
210 count -= 8;
211 }
212 }
213
214 if (count & 1)
215 {
216 SkASSERT((fx >> (16 + 14)) == 0);
217 *dst++ = (fx >> 12 << 14) | ((fx >> 16) + 1);
218 fx += dx;
219 }
220 while ((count -= 2) >= 0)
221 {
222 SkASSERT((fx >> (16 + 14)) == 0);
223 *dst++ = (fx >> 12 << 14) | ((fx >> 16) + 1);
224 fx += dx;
225
226 *dst++ = (fx >> 12 << 14) | ((fx >> 16) + 1);
227 fx += dx;
228 }
229 }
230