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 "SkPerspIter.h"
9 #include "SkShader.h"
10 #include "SkUtilsArm.h"
11 #include "SkBitmapProcState_utils.h"
12
13 #include <arm_neon.h>
14
15 extern const SkBitmapProcState::MatrixProc ClampX_ClampY_Procs_neon[];
16 extern const SkBitmapProcState::MatrixProc RepeatX_RepeatY_Procs_neon[];
17
18 static void decal_nofilter_scale_neon(uint32_t dst[], SkFixed fx, SkFixed dx, int count);
19 static void decal_filter_scale_neon(uint32_t dst[], SkFixed fx, SkFixed dx, int count);
20
21 // TILEX_PROCF(fx, max) SkClampMax((fx) >> 16, max)
sbpsm_clamp_tile8(int32x4_t low,int32x4_t high,unsigned max)22 static inline int16x8_t sbpsm_clamp_tile8(int32x4_t low, int32x4_t high, unsigned max) {
23 int16x8_t res;
24
25 // get the hi 16s of all those 32s
26 res = vuzpq_s16(vreinterpretq_s16_s32(low), vreinterpretq_s16_s32(high)).val[1];
27
28 // clamp
29 res = vmaxq_s16(res, vdupq_n_s16(0));
30 res = vminq_s16(res, vdupq_n_s16(max));
31
32 return res;
33 }
34
35 // TILEX_PROCF(fx, max) SkClampMax((fx) >> 16, max)
sbpsm_clamp_tile4(int32x4_t f,unsigned max)36 static inline int32x4_t sbpsm_clamp_tile4(int32x4_t f, unsigned max) {
37 int32x4_t res;
38
39 // get the hi 16s of all those 32s
40 res = vshrq_n_s32(f, 16);
41
42 // clamp
43 res = vmaxq_s32(res, vdupq_n_s32(0));
44 res = vminq_s32(res, vdupq_n_s32(max));
45
46 return res;
47 }
48
49 // EXTRACT_LOW_BITS(fy, max) (((fy) >> 12) & 0xF)
sbpsm_clamp_tile4_low_bits(int32x4_t fx)50 static inline int32x4_t sbpsm_clamp_tile4_low_bits(int32x4_t fx) {
51 int32x4_t ret;
52
53 ret = vshrq_n_s32(fx, 12);
54
55 /* We don't need the mask below because the caller will
56 * overwrite the non-masked bits
57 */
58 //ret = vandq_s32(ret, vdupq_n_s32(0xF));
59
60 return ret;
61 }
62
63 // TILEX_PROCF(fx, max) (((fx)&0xFFFF)*((max)+1)>> 16)
sbpsm_repeat_tile8(int32x4_t low,int32x4_t high,unsigned max)64 static inline int16x8_t sbpsm_repeat_tile8(int32x4_t low, int32x4_t high, unsigned max) {
65 uint16x8_t res;
66 uint32x4_t tmpl, tmph;
67
68 // get the lower 16 bits
69 res = vuzpq_u16(vreinterpretq_u16_s32(low), vreinterpretq_u16_s32(high)).val[0];
70
71 // bare multiplication, not SkFixedMul
72 tmpl = vmull_u16(vget_low_u16(res), vdup_n_u16(max+1));
73 tmph = vmull_u16(vget_high_u16(res), vdup_n_u16(max+1));
74
75 // extraction of the 16 upper bits
76 res = vuzpq_u16(vreinterpretq_u16_u32(tmpl), vreinterpretq_u16_u32(tmph)).val[1];
77
78 return vreinterpretq_s16_u16(res);
79 }
80
81 // TILEX_PROCF(fx, max) (((fx)&0xFFFF)*((max)+1)>> 16)
sbpsm_repeat_tile4(int32x4_t f,unsigned max)82 static inline int32x4_t sbpsm_repeat_tile4(int32x4_t f, unsigned max) {
83 uint16x4_t res;
84 uint32x4_t tmp;
85
86 // get the lower 16 bits
87 res = vmovn_u32(vreinterpretq_u32_s32(f));
88
89 // bare multiplication, not SkFixedMul
90 tmp = vmull_u16(res, vdup_n_u16(max+1));
91
92 // extraction of the 16 upper bits
93 tmp = vshrq_n_u32(tmp, 16);
94
95 return vreinterpretq_s32_u32(tmp);
96 }
97
98 // EXTRACT_LOW_BITS(fx, max) ((((fx) & 0xFFFF) * ((max) + 1) >> 12) & 0xF)
sbpsm_repeat_tile4_low_bits(int32x4_t fx,unsigned max)99 static inline int32x4_t sbpsm_repeat_tile4_low_bits(int32x4_t fx, unsigned max) {
100 uint16x4_t res;
101 uint32x4_t tmp;
102 int32x4_t ret;
103
104 // get the lower 16 bits
105 res = vmovn_u32(vreinterpretq_u32_s32(fx));
106
107 // bare multiplication, not SkFixedMul
108 tmp = vmull_u16(res, vdup_n_u16(max + 1));
109
110 // shift and mask
111 ret = vshrq_n_s32(vreinterpretq_s32_u32(tmp), 12);
112
113 /* We don't need the mask below because the caller will
114 * overwrite the non-masked bits
115 */
116 //ret = vandq_s32(ret, vdupq_n_s32(0xF));
117
118 return ret;
119 }
120
121 #define MAKENAME(suffix) ClampX_ClampY ## suffix ## _neon
122 #define TILEX_PROCF(fx, max) SkClampMax((fx) >> 16, max)
123 #define TILEY_PROCF(fy, max) SkClampMax((fy) >> 16, max)
124 #define TILEX_PROCF_NEON8(l, h, max) sbpsm_clamp_tile8(l, h, max)
125 #define TILEY_PROCF_NEON8(l, h, max) sbpsm_clamp_tile8(l, h, max)
126 #define TILEX_PROCF_NEON4(fx, max) sbpsm_clamp_tile4(fx, max)
127 #define TILEY_PROCF_NEON4(fy, max) sbpsm_clamp_tile4(fy, max)
128 #define EXTRACT_LOW_BITS(v, max) (((v) >> 12) & 0xF)
129 #define EXTRACT_LOW_BITS_NEON4(v, max) sbpsm_clamp_tile4_low_bits(v)
130 #define CHECK_FOR_DECAL
131 #include "SkBitmapProcState_matrix_neon.h"
132
133 #define MAKENAME(suffix) RepeatX_RepeatY ## suffix ## _neon
134 #define TILEX_PROCF(fx, max) SK_USHIFT16(((fx) & 0xFFFF) * ((max) + 1))
135 #define TILEY_PROCF(fy, max) SK_USHIFT16(((fy) & 0xFFFF) * ((max) + 1))
136 #define TILEX_PROCF_NEON8(l, h, max) sbpsm_repeat_tile8(l, h, max)
137 #define TILEY_PROCF_NEON8(l, h, max) sbpsm_repeat_tile8(l, h, max)
138 #define TILEX_PROCF_NEON4(fx, max) sbpsm_repeat_tile4(fx, max)
139 #define TILEY_PROCF_NEON4(fy, max) sbpsm_repeat_tile4(fy, max)
140 #define EXTRACT_LOW_BITS(v, max) ((((v) & 0xFFFF) * ((max) + 1) >> 12) & 0xF)
141 #define EXTRACT_LOW_BITS_NEON4(v, max) sbpsm_repeat_tile4_low_bits(v, max)
142 #include "SkBitmapProcState_matrix_neon.h"
143
144
145
decal_nofilter_scale_neon(uint32_t dst[],SkFixed fx,SkFixed dx,int count)146 void decal_nofilter_scale_neon(uint32_t dst[], SkFixed fx, SkFixed dx, int count) {
147 if (count >= 8) {
148 // SkFixed is 16.16 fixed point
149 SkFixed dx8 = dx * 8;
150 int32x4_t vdx8 = vdupq_n_s32(dx8);
151
152 // setup lbase and hbase
153 int32x4_t lbase, hbase;
154 lbase = vdupq_n_s32(fx);
155 lbase = vsetq_lane_s32(fx + dx, lbase, 1);
156 lbase = vsetq_lane_s32(fx + dx + dx, lbase, 2);
157 lbase = vsetq_lane_s32(fx + dx + dx + dx, lbase, 3);
158 hbase = lbase + vdupq_n_s32(4 * dx);
159
160 do {
161 // store the upper 16 bits
162 vst1q_u32(dst, vreinterpretq_u32_s16(
163 vuzpq_s16(vreinterpretq_s16_s32(lbase), vreinterpretq_s16_s32(hbase)).val[1]
164 ));
165
166 // on to the next group of 8
167 lbase += vdx8;
168 hbase += vdx8;
169 dst += 4; // we did 8 elements but the result is twice smaller
170 count -= 8;
171 fx += dx8;
172 } while (count >= 8);
173 }
174
175 uint16_t* xx = (uint16_t*)dst;
176 for (int i = count; i > 0; --i) {
177 *xx++ = SkToU16(fx >> 16); fx += dx;
178 }
179 }
180
decal_filter_scale_neon(uint32_t dst[],SkFixed fx,SkFixed dx,int count)181 void decal_filter_scale_neon(uint32_t dst[], SkFixed fx, SkFixed dx, int count) {
182 if (count >= 8) {
183 SkFixed dx8 = dx * 8;
184 int32x4_t vdx8 = vdupq_n_s32(dx8);
185
186 int32x4_t wide_fx, wide_fx2;
187 wide_fx = vdupq_n_s32(fx);
188 wide_fx = vsetq_lane_s32(fx + dx, wide_fx, 1);
189 wide_fx = vsetq_lane_s32(fx + dx + dx, wide_fx, 2);
190 wide_fx = vsetq_lane_s32(fx + dx + dx + dx, wide_fx, 3);
191
192 wide_fx2 = vaddq_s32(wide_fx, vdupq_n_s32(4 * dx));
193
194 while (count >= 8) {
195 int32x4_t wide_out;
196 int32x4_t wide_out2;
197
198 wide_out = vshlq_n_s32(vshrq_n_s32(wide_fx, 12), 14);
199 wide_out = wide_out | (vshrq_n_s32(wide_fx,16) + vdupq_n_s32(1));
200
201 wide_out2 = vshlq_n_s32(vshrq_n_s32(wide_fx2, 12), 14);
202 wide_out2 = wide_out2 | (vshrq_n_s32(wide_fx2,16) + vdupq_n_s32(1));
203
204 vst1q_u32(dst, vreinterpretq_u32_s32(wide_out));
205 vst1q_u32(dst+4, vreinterpretq_u32_s32(wide_out2));
206
207 dst += 8;
208 fx += dx8;
209 wide_fx += vdx8;
210 wide_fx2 += vdx8;
211 count -= 8;
212 }
213 }
214
215 if (count & 1)
216 {
217 SkASSERT((fx >> (16 + 14)) == 0);
218 *dst++ = (fx >> 12 << 14) | ((fx >> 16) + 1);
219 fx += dx;
220 }
221 while ((count -= 2) >= 0)
222 {
223 SkASSERT((fx >> (16 + 14)) == 0);
224 *dst++ = (fx >> 12 << 14) | ((fx >> 16) + 1);
225 fx += dx;
226
227 *dst++ = (fx >> 12 << 14) | ((fx >> 16) + 1);
228 fx += dx;
229 }
230 }
231