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 SkUserConfig_DEFINED 11 #define SkUserConfig_DEFINED 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 /* Scalars (the fractional value type in skia) can be implemented either as 41 floats or 16.16 integers (fixed). Exactly one of these two symbols must be 42 defined. 43 */ 44 //#define SK_SCALAR_IS_FLOAT 45 //#define SK_SCALAR_IS_FIXED 46 47 48 /* For some performance-critical scalar operations, skia will optionally work 49 around the standard float operators if it knows that the CPU does not have 50 native support for floats. If your environment uses software floating point, 51 define this flag. 52 */ 53 //#define SK_SOFTWARE_FLOAT 54 55 56 /* Skia has lots of debug-only code. Often this is just null checks or other 57 parameter checking, but sometimes it can be quite intrusive (e.g. check that 58 each 32bit pixel is in premultiplied form). This code can be very useful 59 during development, but will slow things down in a shipping product. 60 61 By default, these mutually exclusive flags are defined in SkPreConfig.h, 62 based on the presence or absence of NDEBUG, but that decision can be changed 63 here. 64 */ 65 //#define SK_DEBUG 66 //#define SK_RELEASE 67 68 /* Skia has certain debug-only code that is extremely intensive even for debug 69 builds. This code is useful for diagnosing specific issues, but is not 70 generally applicable, therefore it must be explicitly enabled to avoid 71 the performance impact. By default these flags are undefined, but can be 72 enabled by uncommenting them below. 73 */ 74 //#define SK_DEBUG_GLYPH_CACHE 75 //#define SK_DEBUG_PATH 76 77 /* To assist debugging, Skia provides an instance counting utility in 78 include/core/SkInstCount.h. This flag turns on and off that utility to 79 allow instance count tracking in either debug or release builds. By 80 default it is enabled in debug but disabled in release. 81 */ 82 //#define SK_ENABLE_INST_COUNT 1 83 84 /* If, in debugging mode, Skia needs to stop (presumably to invoke a debugger) 85 it will call SK_CRASH(). If this is not defined it, it is defined in 86 SkPostConfig.h to write to an illegal address 87 */ 88 //#define SK_CRASH() *(int *)(uintptr_t)0 = 0 89 90 91 /* preconfig will have attempted to determine the endianness of the system, 92 but you can change these mutually exclusive flags here. 93 */ 94 //#define SK_CPU_BENDIAN 95 //#define SK_CPU_LENDIAN 96 97 /* Most compilers use the same bit endianness for bit flags in a byte as the 98 system byte endianness, and this is the default. If for some reason this 99 needs to be overridden, specify which of the mutually exclusive flags to 100 use. For example, some atom processors in certain configurations have big 101 endian byte order but little endian bit orders. 102 */ 103 //#define SK_UINT8_BITFIELD_BENDIAN 104 //#define SK_UINT8_BITFIELD_LENDIAN 105 106 107 /* Some compilers don't support long long for 64bit integers. If yours does 108 not, define this to the appropriate type. 109 */ 110 //#define SkLONGLONG int64_t 111 112 113 /* To write debug messages to a console, skia will call SkDebugf(...) following 114 printf conventions (e.g. const char* format, ...). If you want to redirect 115 this to something other than printf, define yours here 116 */ 117 //#define SkDebugf(...) MyFunction(__VA_ARGS__) 118 119 /* 120 * To specify a different default font cache limit, define this. If this is 121 * undefined, skia will use a built-in value. 122 */ 123 //#define SK_DEFAULT_FONT_CACHE_LIMIT (1024 * 1024) 124 125 /* 126 * To specify the default size of the image cache, undefine this and set it to 127 * the desired value (in bytes). SkGraphics.h as a runtime API to set this 128 * value as well. If this is undefined, a built-in value will be used. 129 */ 130 //#define SK_DEFAULT_IMAGE_CACHE_LIMIT (1024 * 1024) 131 132 /* If zlib is available and you want to support the flate compression 133 algorithm (used in PDF generation), define SK_ZLIB_INCLUDE to be the 134 include path. Alternatively, define SK_SYSTEM_ZLIB to use the system zlib 135 library specified as "#include <zlib.h>". 136 */ 137 //#define SK_ZLIB_INCLUDE <zlib.h> 138 //#define SK_SYSTEM_ZLIB 139 140 /* Define this to allow PDF scalars above 32k. The PDF/A spec doesn't allow 141 them, but modern PDF interpreters should handle them just fine. 142 */ 143 //#define SK_ALLOW_LARGE_PDF_SCALARS 144 145 /* Define this to provide font subsetter in PDF generation. 146 */ 147 //#define SK_SFNTLY_SUBSETTER "sfntly/subsetter/font_subsetter.h" 148 149 /* Define this to set the upper limit for text to support LCD. Values that 150 are very large increase the cost in the font cache and draw slower, without 151 improving readability. If this is undefined, Skia will use its default 152 value (e.g. 48) 153 */ 154 //#define SK_MAX_SIZE_FOR_LCDTEXT 48 155 156 /* If SK_DEBUG is defined, then you can optionally define SK_SUPPORT_UNITTEST 157 which will run additional self-tests at startup. These can take a long time, 158 so this flag is optional. 159 */ 160 #ifdef SK_DEBUG 161 //#define SK_SUPPORT_UNITTEST 162 #endif 163 164 /* If your system embeds skia and has complex event logging, define this 165 symbol to name a file that maps the following macros to your system's 166 equivalents: 167 SK_TRACE_EVENT0(event) 168 SK_TRACE_EVENT1(event, name1, value1) 169 SK_TRACE_EVENT2(event, name1, value1, name2, value2) 170 src/utils/SkDebugTrace.h has a trivial implementation that writes to 171 the debug output stream. If SK_USER_TRACE_INCLUDE_FILE is not defined, 172 SkTrace.h will define the above three macros to do nothing. 173 */ 174 //#undef SK_USER_TRACE_INCLUDE_FILE 175 176 /* Change the ordering to work in X windows. 177 */ 178 #ifdef SK_SAMPLES_FOR_X 179 #define SK_R32_SHIFT 16 180 #define SK_G32_SHIFT 8 181 #define SK_B32_SHIFT 0 182 #define SK_A32_SHIFT 24 183 #endif 184 185 186 /* Determines whether to build code that supports the GPU backend. Some classes 187 that are not GPU-specific, such as SkShader subclasses, have optional code 188 that is used allows them to interact with the GPU backend. If you'd like to 189 omit this code set SK_SUPPORT_GPU to 0. This also allows you to omit the gpu 190 directories from your include search path when you're not building the GPU 191 backend. Defaults to 1 (build the GPU code). 192 */ 193 //#define SK_SUPPORT_GPU 1 194 195 196 /* The PDF generation code uses Path Ops to generate inverse fills and complex 197 * clipping paths, but at this time, Path Ops is not release ready yet. So, 198 * the code is hidden behind this #define guard. If you are feeling adventurous 199 * and want the latest and greatest PDF generation code, uncomment the #define. 200 * When Path Ops is release ready, the define guards and this user config 201 * define should be removed entirely. 202 */ 203 //#define SK_PDF_USE_PATHOPS 204 205 #endif 206
