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Side by Side Diff: src/utils/SkTextureCompressor.cpp

Issue 438443004: Revert of Add ETC1 format to SkTextureCompressor (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: Created 6 years, 4 months ago
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1 /* 1 /*
2 * Copyright 2014 Google Inc. 2 * Copyright 2014 Google Inc.
3 * 3 *
4 * Use of this source code is governed by a BSD-style license that can be 4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file. 5 * found in the LICENSE file.
6 */ 6 */
7 7
8 #include "SkTextureCompressor.h" 8 #include "SkTextureCompressor.h"
9 #include "SkTextureCompressor_ASTC.h" 9 #include "SkTextureCompressor_ASTC.h"
10 #include "SkTextureCompressor_LATC.h" 10 #include "SkTextureCompressor_LATC.h"
11 #include "SkTextureCompressor_R11EAC.h" 11 #include "SkTextureCompressor_R11EAC.h"
12 12
13 #include "SkBitmap.h" 13 #include "SkBitmap.h"
14 #include "SkData.h" 14 #include "SkData.h"
15 #include "SkEndian.h" 15 #include "SkEndian.h"
16 16
17 #include "SkTextureCompression_opts.h" 17 #include "SkTextureCompression_opts.h"
18 18
19 #ifndef SK_IGNORE_ETC1_SUPPORT
20 # include "etc1.h"
21 #endif
22
23 // Convert ETC1 functions to our function signatures
24 static bool compress_etc1_565(uint8_t* dst, const uint8_t* src,
25 int width, int height, int rowBytes) {
26 #ifndef SK_IGNORE_ETC1_SUPPORT
27 return 0 == etc1_encode_image(src, width, height, 2, rowBytes, dst);
28 #else
29 return false;
30 #endif
31 }
32
33 //////////////////////////////////////////////////////////////////////////////// 19 ////////////////////////////////////////////////////////////////////////////////
34 20
35 namespace SkTextureCompressor { 21 namespace SkTextureCompressor {
36 22
37 void GetBlockDimensions(Format format, int* dimX, int* dimY, bool matchSpec) { 23 void GetBlockDimensions(Format format, int* dimX, int* dimY, bool matchSpec) {
38 if (NULL == dimX || NULL == dimY) { 24 if (NULL == dimX || NULL == dimY) {
39 return; 25 return;
40 } 26 }
41 27
42 if (!matchSpec && SkTextureCompressorGetPlatformDims(format, dimX, dimY)) { 28 if (!matchSpec && SkTextureCompressorGetPlatformDims(format, dimX, dimY)) {
43 return; 29 return;
44 } 30 }
45 31
46 // No specialized arguments, return the dimensions as they are in the spec. 32 // No specialized arguments, return the dimensions as they are in the spec.
47 switch(format) { 33 switch(format) {
48 // These formats are 64 bits per 4x4 block. 34 // These formats are 64 bits per 4x4 block.
49 default: 35 default:
50 SkDEBUGFAIL("Unknown compression format!"); 36 SkDEBUGFAIL("Unknown compression format!");
51 // fall through 37 // fall through
38 case kR11_EAC_Format:
52 case kLATC_Format: 39 case kLATC_Format:
53 case kR11_EAC_Format:
54 case kETC1_Format:
55 *dimX = 4; 40 *dimX = 4;
56 *dimY = 4; 41 *dimY = 4;
57 break; 42 break;
58 43
59 // This format is 12x12 blocks to 128 bits. 44 // This format is 12x12 blocks to 128 bits.
60 case kASTC_12x12_Format: 45 case kASTC_12x12_Format:
61 *dimX = 12; 46 *dimX = 12;
62 *dimY = 12; 47 *dimY = 12;
63 break; 48 break;
64 } 49 }
65 } 50 }
66 51
67 int GetCompressedDataSize(Format fmt, int width, int height) { 52 int GetCompressedDataSize(Format fmt, int width, int height) {
68 int dimX, dimY; 53 int dimX, dimY;
69 GetBlockDimensions(fmt, &dimX, &dimY, true); 54 GetBlockDimensions(fmt, &dimX, &dimY, true);
70 55
71 int encodedBlockSize = 0; 56 int encodedBlockSize = 0;
72 57
73 switch (fmt) { 58 switch (fmt) {
74 // These formats are 64 bits per 4x4 block. 59 // These formats are 64 bits per 4x4 block.
60 case kR11_EAC_Format:
75 case kLATC_Format: 61 case kLATC_Format:
76 case kR11_EAC_Format:
77 case kETC1_Format:
78 encodedBlockSize = 8; 62 encodedBlockSize = 8;
79 break; 63 break;
80 64
81 // This format is 12x12 blocks to 128 bits. 65 // This format is 12x12 blocks to 128 bits.
82 case kASTC_12x12_Format: 66 case kASTC_12x12_Format:
83 encodedBlockSize = 16; 67 encodedBlockSize = 16;
84 break; 68 break;
85 69
86 default: 70 default:
87 SkFAIL("Unknown compressed format!"); 71 SkFAIL("Unknown compressed format!");
(...skipping 26 matching lines...) Expand all
114 proc = CompressA8ToLATC; 98 proc = CompressA8ToLATC;
115 break; 99 break;
116 case kR11_EAC_Format: 100 case kR11_EAC_Format:
117 proc = CompressA8ToR11EAC; 101 proc = CompressA8ToR11EAC;
118 break; 102 break;
119 case kASTC_12x12_Format: 103 case kASTC_12x12_Format:
120 proc = CompressA8To12x12ASTC; 104 proc = CompressA8To12x12ASTC;
121 break; 105 break;
122 default: 106 default:
123 // Do nothing... 107 // Do nothing...
124 break;
125 }
126 }
127 break;
128
129 case kRGB_565_SkColorType:
130 {
131 switch (format) {
132 case kETC1_Format:
133 proc = compress_etc1_565;
134 break;
135 default:
136 // Do nothing...
137 break; 108 break;
138 } 109 }
139 } 110 }
140 break; 111 break;
141 112
142 default: 113 default:
143 // Do nothing... 114 // Do nothing...
144 break; 115 break;
145 } 116 }
146 } 117 }
(...skipping 54 matching lines...) Expand 10 before | Expand all | Expand 10 after
201 172
202 switch(format) { 173 switch(format) {
203 case kLATC_Format: 174 case kLATC_Format:
204 DecompressLATC(dst, dstRowBytes, src, width, height); 175 DecompressLATC(dst, dstRowBytes, src, width, height);
205 return true; 176 return true;
206 177
207 case kR11_EAC_Format: 178 case kR11_EAC_Format:
208 DecompressR11EAC(dst, dstRowBytes, src, width, height); 179 DecompressR11EAC(dst, dstRowBytes, src, width, height);
209 return true; 180 return true;
210 181
211 #ifndef SK_IGNORE_ETC1_SUPPORT
212 case kETC1_Format:
213 return 0 == etc1_decode_image(src, dst, width, height, 3, dstRowByte s);
214 #endif
215 case kASTC_12x12_Format: 182 case kASTC_12x12_Format:
216 // TODO(krajcevski) .. right now just fall through and return false. 183 // TODO(krajcevski) .. right now just fall through and return false.
217 return false; 184 return false;
218 } 185 }
219 186
220 return false; 187 return false;
221 } 188 }
222 189
223 } // namespace SkTextureCompressor 190 } // namespace SkTextureCompressor
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