1 2 /* 3 * Copyright 2006 The Android Open Source Project 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 9 10 #ifndef SKIA_CONFIG_SKUSERCONFIG_H_ 11 #define SKIA_CONFIG_SKUSERCONFIG_H_ 12 13 /* SkTypes.h, the root of the public header files, does the following trick: 14 15 #include "SkPreConfig.h" 16 #include "SkUserConfig.h" 17 #include "SkPostConfig.h" 18 19 SkPreConfig.h runs first, and it is responsible for initializing certain 20 skia defines. 21 22 SkPostConfig.h runs last, and its job is to just check that the final 23 defines are consistent (i.e. that we don't have mutually conflicting 24 defines). 25 26 SkUserConfig.h (this file) runs in the middle. It gets to change or augment 27 the list of flags initially set in preconfig, and then postconfig checks 28 that everything still makes sense. 29 30 Below are optional defines that add, subtract, or change default behavior 31 in Skia. Your port can locally edit this file to enable/disable flags as 32 you choose, or these can be delared on your command line (i.e. -Dfoo). 33 34 By default, this include file will always default to having all of the flags 35 commented out, so including it will have no effect. 36 */ 37 38 /////////////////////////////////////////////////////////////////////////////// 39 40 /* Skia has lots of debug-only code. Often this is just null checks or other 41 parameter checking, but sometimes it can be quite intrusive (e.g. check that 42 each 32bit pixel is in premultiplied form). This code can be very useful 43 during development, but will slow things down in a shipping product. 44 45 By default, these mutually exclusive flags are defined in SkPreConfig.h, 46 based on the presence or absence of NDEBUG, but that decision can be changed 47 here. 48 */ 49 // #define SK_DEBUG 50 // #define SK_RELEASE 51 52 /* Skia has certain debug-only code that is extremely intensive even for debug 53 builds. This code is useful for diagnosing specific issues, but is not 54 generally applicable, therefore it must be explicitly enabled to avoid 55 the performance impact. By default these flags are undefined, but can be 56 enabled by uncommenting them below. 57 */ 58 // #define SK_DEBUG_GLYPH_CACHE 59 // #define SK_DEBUG_PATH 60 61 /* preconfig will have attempted to determine the endianness of the system, 62 but you can change these mutually exclusive flags here. 63 */ 64 // #define SK_CPU_BENDIAN 65 // #define SK_CPU_LENDIAN 66 67 /* Most compilers use the same bit endianness for bit flags in a byte as the 68 system byte endianness, and this is the default. If for some reason this 69 needs to be overridden, specify which of the mutually exclusive flags to 70 use. For example, some atom processors in certain configurations have big 71 endian byte order but little endian bit orders. 72 */ 73 // #define SK_UINT8_BITFIELD_BENDIAN 74 // #define SK_UINT8_BITFIELD_LENDIAN 75 76 77 /* To write debug messages to a console, skia will call SkDebugf(...) following 78 printf conventions (e.g. const char* format, ...). If you want to redirect 79 this to something other than printf, define yours here 80 */ 81 // #define SkDebugf(...) MyFunction(__VA_ARGS__) 82 83 /* 84 * To specify a different default font cache limit, define this. If this is 85 * undefined, skia will use a built-in value. 86 */ 87 // #define SK_DEFAULT_FONT_CACHE_LIMIT (1024 * 1024) 88 89 /* 90 * To specify the default size of the image cache, undefine this and set it to 91 * the desired value (in bytes). SkGraphics.h as a runtime API to set this 92 * value as well. If this is undefined, a built-in value will be used. 93 */ 94 // #define SK_DEFAULT_IMAGE_CACHE_LIMIT (1024 * 1024) 95 96 /* Define this to set the upper limit for text to support LCD. Values that 97 are very large increase the cost in the font cache and draw slower, without 98 improving readability. If this is undefined, Skia will use its default 99 value (e.g. 48) 100 */ 101 // #define SK_MAX_SIZE_FOR_LCDTEXT 48 102 103 /* Change the ordering to work in X windows. 104 */ 105 // #ifdef SK_SAMPLES_FOR_X 106 // #define SK_R32_SHIFT 16 107 // #define SK_G32_SHIFT 8 108 // #define SK_B32_SHIFT 0 109 // #define SK_A32_SHIFT 24 110 // #endif 111 112 113 /* Determines whether to build code that supports the GPU backend. Some classes 114 that are not GPU-specific, such as SkShader subclasses, have optional code 115 that is used allows them to interact with the GPU backend. If you'd like to 116 omit this code set SK_SUPPORT_GPU to 0. This also allows you to omit the gpu 117 directories from your include search path when you're not building the GPU 118 backend. Defaults to 1 (build the GPU code). 119 */ 120 // #define SK_SUPPORT_GPU 1 121 122 /* Skia makes use of histogram logging macros to trace the frequency of 123 * events. By default, Skia provides no-op versions of these macros. 124 * Skia consumers can provide their own definitions of these macros to 125 * integrate with their histogram collection backend. 126 */ 127 // #define SK_HISTOGRAM_BOOLEAN(name, value) 128 // #define SK_HISTOGRAM_ENUMERATION(name, value, boundary_value) 129 130 // ===== Begin Chrome-specific definitions ===== 131 132 #define SK_MSCALAR_IS_FLOAT 133 #undef SK_MSCALAR_IS_DOUBLE 134 135 #define GR_MAX_OFFSCREEN_AA_DIM 512 136 137 // Log the file and line number for assertions. 138 #define SkDebugf(...) SkDebugf_FileLine(__FILE__, __LINE__, __VA_ARGS__) 139 SK_API void SkDebugf_FileLine(const char* file, 140 int line, 141 const char* format, 142 ...); 143 144 #if !defined(ANDROID) // On Android, we use the skia default settings. 145 #define SK_A32_SHIFT 24 146 #define SK_R32_SHIFT 16 147 #define SK_G32_SHIFT 8 148 #define SK_B32_SHIFT 0 149 #endif 150 151 #if defined(SK_BUILD_FOR_WIN32) 152 153 #define SK_BUILD_FOR_WIN 154 155 // Skia uses this deprecated bzero function to fill zeros into a string. 156 #define bzero(str, len) memset(str, 0, len) 157 158 #elif defined(SK_BUILD_FOR_MAC) 159 160 #define SK_CPU_LENDIAN 161 #undef SK_CPU_BENDIAN 162 163 #elif defined(SK_BUILD_FOR_UNIX) || defined(SK_BUILD_FOR_ANDROID) 164 165 // Prefer FreeType's emboldening algorithm to Skia's 166 // TODO: skia used to just use hairline, but has improved since then, so 167 // we should revisit this choice... 168 #define SK_USE_FREETYPE_EMBOLDEN 169 170 #if defined(SK_BUILD_FOR_UNIX) && defined(SK_CPU_BENDIAN) 171 // Above we set the order for ARGB channels in registers. I suspect that, on 172 // big endian machines, you can keep this the same and everything will work. 173 // The in-memory order will be different, of course, but as long as everything 174 // is reading memory as words rather than bytes, it will all work. However, if 175 // you find that colours are messed up I thought that I would leave a helpful 176 // locator for you. Also see the comments in 177 // base/gfx/bitmap_platform_device_linux.h 178 #error Read the comment at this location 179 #endif 180 181 #endif 182 183 // These flags are no longer defined in Skia, but we have them (temporarily) 184 // until we update our call-sites (typically these are for API changes). 185 // 186 // Remove these as we update our sites. 187 // 188 #ifndef SK_SUPPORT_LEGACY_GETTOPDEVICE 189 #define SK_SUPPORT_LEGACY_GETTOPDEVICE 190 #endif 191 192 #ifndef SK_SUPPORT_EXOTIC_CLIPOPS 193 #define SK_SUPPORT_EXOTIC_CLIPOPS 194 #endif 195 196 #ifndef SK_SUPPORT_LEGACY_GETDEVICE 197 #define SK_SUPPORT_LEGACY_GETDEVICE 198 #endif 199 200 // Workaround for poor anisotropic mipmap quality, 201 // pending Skia ripmap support. 202 // (https://bugs.chromium.org/p/skia/issues/detail?id=4863) 203 #ifndef SK_SUPPORT_LEGACY_ANISOTROPIC_MIPMAP_SCALE 204 #define SK_SUPPORT_LEGACY_ANISOTROPIC_MIPMAP_SCALE 205 #endif 206 207 #ifndef SK_SUPPORT_LEGACY_REFENCODEDDATA_NOCTX 208 #define SK_SUPPORT_LEGACY_REFENCODEDDATA_NOCTX 209 #endif 210 211 #ifndef SK_IGNORE_ETC1_SUPPORT 212 #define SK_IGNORE_ETC1_SUPPORT 213 #endif 214 215 #ifndef SK_IGNORE_GPU_DITHER 216 #define SK_IGNORE_GPU_DITHER 217 #endif 218 219 #ifndef SK_SUPPORT_LEGACY_EVAL_CUBIC 220 #define SK_SUPPORT_LEGACY_EVAL_CUBIC 221 #endif 222 223 ///////////////////////// Imported from BUILD.gn 224 225 /* In some places Skia can use static initializers for global initialization, 226 * or fall back to lazy runtime initialization. Chrome always wants the latter. 227 */ 228 #define SK_ALLOW_STATIC_GLOBAL_INITIALIZERS 0 229 230 /* This flag forces Skia not to use typographic metrics with GDI. 231 */ 232 #define SK_GDI_ALWAYS_USE_TEXTMETRICS_FOR_FONT_METRICS 233 234 #define SK_IGNORE_BLURRED_RRECT_OPT 235 #define SK_USE_DISCARDABLE_SCALEDIMAGECACHE 236 #define SK_WILL_NEVER_DRAW_PERSPECTIVE_TEXT 237 238 #define SK_ATTR_DEPRECATED SK_NOTHING_ARG1 239 #define SK_ENABLE_INST_COUNT 0 240 #define GR_GL_CUSTOM_SETUP_HEADER "GrGLConfig_chrome.h" 241 242 // Blink layout tests are baselined to Clang optimizing through the UB in 243 // SkDivBits. 244 #define SK_SUPPORT_LEGACY_DIVBITS_UB 245 246 // mtklein's fiddling with Src / SrcOver. Will rebaseline these only once when 247 // done. 248 #define SK_SUPPORT_LEGACY_X86_BLITS 249 250 #define SK_DISABLE_TILE_IMAGE_FILTER_OPTIMIZATION 251 252 // ===== End Chrome-specific definitions ===== 253 254 #endif // SKIA_CONFIG_SKUSERCONFIG_H_ 255