1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
|
/**************************************************************************
*
* Copyright 2009 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#include "util/u_format.h"
#include "lp_bld_format.h"
LLVMValueRef
lp_build_unpack_rgba_aos(LLVMBuilderRef builder,
const struct util_format_description *desc,
LLVMValueRef packed)
{
LLVMTypeRef type;
LLVMValueRef shifted, casted, scaled, masked;
LLVMValueRef shifts[4];
LLVMValueRef masks[4];
LLVMValueRef scales[4];
LLVMValueRef swizzles[4];
LLVMValueRef aux[4];
bool normalized;
int empty_channel;
unsigned shift;
unsigned i;
/* FIXME: Support more formats */
assert(desc->layout == UTIL_FORMAT_LAYOUT_ARITH);
assert(desc->block.width == 1);
assert(desc->block.height == 1);
assert(desc->block.bits <= 32);
type = LLVMIntType(desc->block.bits);
/* Do the intermediate integer computations with 32bit integers since it
* matches floating point size */
if (desc->block.bits < 32)
packed = LLVMBuildZExt(builder, packed, LLVMInt32Type(), "");
/* Broadcast the packed value to all four channels */
packed = LLVMBuildInsertElement(builder,
LLVMGetUndef(LLVMVectorType(LLVMInt32Type(), 4)),
packed,
LLVMConstNull(LLVMInt32Type()),
"");
packed = LLVMBuildShuffleVector(builder,
packed,
LLVMGetUndef(LLVMVectorType(LLVMInt32Type(), 4)),
LLVMConstNull(LLVMVectorType(LLVMInt32Type(), 4)),
"");
/* Initialize vector constants */
normalized = FALSE;
empty_channel = -1;
shift = 0;
for (i = 0; i < 4; ++i) {
unsigned bits = desc->channel[i].size;
if (desc->channel[i].type == UTIL_FORMAT_TYPE_VOID) {
shifts[i] = LLVMGetUndef(LLVMInt32Type());
masks[i] = LLVMConstNull(LLVMInt32Type());
scales[i] = LLVMConstNull(LLVMFloatType());
empty_channel = i;
}
else {
unsigned mask = (1 << bits) - 1;
assert(desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED);
assert(bits < 32);
shifts[i] = LLVMConstInt(LLVMInt32Type(), shift, 0);
masks[i] = LLVMConstInt(LLVMInt32Type(), mask, 0);
if (desc->channel[i].normalized) {
scales[i] = LLVMConstReal(LLVMFloatType(), 1.0/mask);
normalized = TRUE;
}
else
scales[i] = LLVMConstReal(LLVMFloatType(), 1.0);
}
shift += bits;
}
shifted = LLVMBuildLShr(builder, packed, LLVMConstVector(shifts, 4), "");
masked = LLVMBuildAnd(builder, shifted, LLVMConstVector(masks, 4), "");
// UIToFP can't be expressed in SSE2
casted = LLVMBuildSIToFP(builder, masked, LLVMVectorType(LLVMFloatType(), 4), "");
if (normalized)
scaled = LLVMBuildMul(builder, casted, LLVMConstVector(scales, 4), "");
else
scaled = casted;
for (i = 0; i < 4; ++i)
aux[i] = LLVMGetUndef(LLVMFloatType());
for (i = 0; i < 4; ++i) {
enum util_format_swizzle swizzle = desc->swizzle[i];
switch (swizzle) {
case UTIL_FORMAT_SWIZZLE_X:
case UTIL_FORMAT_SWIZZLE_Y:
case UTIL_FORMAT_SWIZZLE_Z:
case UTIL_FORMAT_SWIZZLE_W:
swizzles[i] = LLVMConstInt(LLVMInt32Type(), swizzle, 0);
break;
case UTIL_FORMAT_SWIZZLE_0:
assert(empty_channel >= 0);
swizzles[i] = LLVMConstInt(LLVMInt32Type(), empty_channel, 0);
break;
case UTIL_FORMAT_SWIZZLE_1:
swizzles[i] = LLVMConstInt(LLVMInt32Type(), 4, 0);
aux[0] = LLVMConstReal(LLVMFloatType(), 1.0);
break;
case UTIL_FORMAT_SWIZZLE_NONE:
swizzles[i] = LLVMGetUndef(LLVMFloatType());
assert(0);
break;
}
}
return LLVMBuildShuffleVector(builder, scaled, LLVMConstVector(aux, 4), LLVMConstVector(swizzles, 4), "");
}
LLVMValueRef
lp_build_pack_rgba_aos(LLVMBuilderRef builder,
enum pipe_format format,
LLVMValueRef rgba)
{
const struct util_format_description *desc;
LLVMTypeRef type;
LLVMValueRef packed = NULL;
LLVMValueRef swizzles[4];
LLVMValueRef shifted, casted, scaled, unswizzled;
LLVMValueRef shifts[4];
LLVMValueRef scales[4];
bool normalized;
unsigned shift;
unsigned i, j;
desc = util_format_description(format);
assert(desc->layout == UTIL_FORMAT_LAYOUT_ARITH);
assert(desc->block.width == 1);
assert(desc->block.height == 1);
type = LLVMIntType(desc->block.bits);
/* Unswizzle the color components into the source vector. */
for (i = 0; i < 4; ++i) {
for (j = 0; j < 4; ++j) {
if (desc->swizzle[j] == i)
break;
}
if (j < 4)
swizzles[i] = LLVMConstInt(LLVMInt32Type(), j, 0);
else
swizzles[i] = LLVMGetUndef(LLVMInt32Type());
}
unswizzled = LLVMBuildShuffleVector(builder, rgba,
LLVMGetUndef(LLVMVectorType(LLVMFloatType(), 4)),
LLVMConstVector(swizzles, 4), "");
normalized = FALSE;
shift = 0;
for (i = 0; i < 4; ++i) {
unsigned bits = desc->channel[i].size;
if (desc->channel[i].type == UTIL_FORMAT_TYPE_VOID) {
shifts[i] = LLVMGetUndef(LLVMInt32Type());
scales[i] = LLVMGetUndef(LLVMFloatType());
}
else {
unsigned mask = (1 << bits) - 1;
assert(desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED);
assert(bits < 32);
shifts[i] = LLVMConstInt(LLVMInt32Type(), shift, 0);
if (desc->channel[i].normalized) {
scales[i] = LLVMConstReal(LLVMFloatType(), mask);
normalized = TRUE;
}
else
scales[i] = LLVMConstReal(LLVMFloatType(), 1.0);
}
shift += bits;
}
if (normalized)
scaled = LLVMBuildMul(builder, unswizzled, LLVMConstVector(scales, 4), "");
else
scaled = unswizzled;
casted = LLVMBuildFPToSI(builder, scaled, LLVMVectorType(LLVMInt32Type(), 4), "");
shifted = LLVMBuildShl(builder, casted, LLVMConstVector(shifts, 4), "");
/* Bitwise or all components */
for (i = 0; i < 4; ++i) {
if (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED) {
LLVMValueRef component = LLVMBuildExtractElement(builder, shifted, LLVMConstInt(LLVMInt32Type(), i, 0), "");
if (packed)
packed = LLVMBuildOr(builder, packed, component, "");
else
packed = component;
}
}
if (!packed)
packed = LLVMGetUndef(LLVMInt32Type());
if (desc->block.bits < 32)
packed = LLVMBuildTrunc(builder, packed, type, "");
return packed;
}
void
lp_build_store_rgba_aos(LLVMBuilderRef builder,
enum pipe_format format,
LLVMValueRef ptr,
LLVMValueRef rgba)
{
const struct util_format_description *desc;
LLVMTypeRef type;
LLVMValueRef packed;
desc = util_format_description(format);
assert(desc->layout == UTIL_FORMAT_LAYOUT_ARITH);
assert(desc->block.width == 1);
assert(desc->block.height == 1);
type = LLVMIntType(desc->block.bits);
packed = lp_build_pack_rgba_aos(builder, format, rgba);
ptr = LLVMBuildBitCast(builder, ptr, LLVMPointerType(type, 0), "");
LLVMBuildStore(builder, packed, ptr);
}
|
