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 /* 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 /* To assist debugging, Skia provides an instance counting utility in 62 include/core/SkInstCount.h. This flag turns on and off that utility to 63 allow instance count tracking in either debug or release builds. By 64 default it is enabled in debug but disabled in release. 65 */ 66 //#define SK_ENABLE_INST_COUNT 1 67 68 /* If, in debugging mode, Skia needs to stop (presumably to invoke a debugger) 69 it will call SK_CRASH(). If this is not defined it, it is defined in 70 SkPostConfig.h to write to an illegal address 71 */ 72 //#define SK_CRASH() *(int *)(uintptr_t)0 = 0 73 74 75 /* preconfig will have attempted to determine the endianness of the system, 76 but you can change these mutually exclusive flags here. 77 */ 78 //#define SK_CPU_BENDIAN 79 //#define SK_CPU_LENDIAN 80 81 /* Most compilers use the same bit endianness for bit flags in a byte as the 82 system byte endianness, and this is the default. If for some reason this 83 needs to be overridden, specify which of the mutually exclusive flags to 84 use. For example, some atom processors in certain configurations have big 85 endian byte order but little endian bit orders. 86 */ 87 //#define SK_UINT8_BITFIELD_BENDIAN 88 //#define SK_UINT8_BITFIELD_LENDIAN 89 90 91 /* To write debug messages to a console, skia will call SkDebugf(...) following 92 printf conventions (e.g. const char* format, ...). If you want to redirect 93 this to something other than printf, define yours here 94 */ 95 //#define SkDebugf(...) MyFunction(__VA_ARGS__) 96 97 /* 98 * To specify a different default font cache limit, define this. If this is 99 * undefined, skia will use a built-in value. 100 */ 101 //#define SK_DEFAULT_FONT_CACHE_LIMIT (1024 * 1024) 102 103 /* 104 * To specify the default size of the image cache, undefine this and set it to 105 * the desired value (in bytes). SkGraphics.h as a runtime API to set this 106 * value as well. If this is undefined, a built-in value will be used. 107 */ 108 //#define SK_DEFAULT_IMAGE_CACHE_LIMIT (1024 * 1024) 109 110 /* If zlib is available and you want to support the flate compression 111 algorithm (used in PDF generation), define SK_ZLIB_INCLUDE to be the 112 include path. Alternatively, define SK_SYSTEM_ZLIB to use the system zlib 113 library specified as "#include <zlib.h>". 114 */ 115 //#define SK_ZLIB_INCLUDE <zlib.h> 116 //#define SK_SYSTEM_ZLIB 117 118 /* Define this to allow PDF scalars above 32k. The PDF/A spec doesn't allow 119 them, but modern PDF interpreters should handle them just fine. 120 */ 121 //#define SK_ALLOW_LARGE_PDF_SCALARS 122 123 /* Define this to provide font subsetter in PDF generation. 124 */ 125 //#define SK_SFNTLY_SUBSETTER "sfntly/subsetter/font_subsetter.h" 126 127 /* Define this to set the upper limit for text to support LCD. Values that 128 are very large increase the cost in the font cache and draw slower, without 129 improving readability. If this is undefined, Skia will use its default 130 value (e.g. 48) 131 */ 132 //#define SK_MAX_SIZE_FOR_LCDTEXT 48 133 134 /* If SK_DEBUG is defined, then you can optionally define SK_SUPPORT_UNITTEST 135 which will run additional self-tests at startup. These can take a long time, 136 so this flag is optional. 137 */ 138 #ifdef SK_DEBUG 139 //#define SK_SUPPORT_UNITTEST 140 #endif 141 142 /* Change the ordering to work in X windows. 143 */ 144 #ifdef SK_SAMPLES_FOR_X 145 #define SK_R32_SHIFT 16 146 #define SK_G32_SHIFT 8 147 #define SK_B32_SHIFT 0 148 #define SK_A32_SHIFT 24 149 #endif 150 151 152 /* Determines whether to build code that supports the GPU backend. Some classes 153 that are not GPU-specific, such as SkShader subclasses, have optional code 154 that is used allows them to interact with the GPU backend. If you'd like to 155 omit this code set SK_SUPPORT_GPU to 0. This also allows you to omit the gpu 156 directories from your include search path when you're not building the GPU 157 backend. Defaults to 1 (build the GPU code). 158 */ 159 //#define SK_SUPPORT_GPU 1 160 161 162 /* The PDF generation code uses Path Ops to generate inverse fills and complex 163 * clipping paths, but at this time, Path Ops is not release ready yet. So, 164 * the code is hidden behind this #define guard. If you are feeling adventurous 165 * and want the latest and greatest PDF generation code, uncomment the #define. 166 * When Path Ops is release ready, the define guards and this user config 167 * define should be removed entirely. 168 */ 169 //#define SK_PDF_USE_PATHOPS 170 171 /* Skia uses these defines as the target of include preprocessor directives. 172 * The header files pointed to by these defines provide declarations and 173 * possibly inline implementations of threading primitives. 174 * 175 * See SkThread.h for documentation on what these includes must contain. 176 */ 177 //#define SK_ATOMICS_PLATFORM_H "SkAtomics_xxx.h" 178 //#define SK_MUTEX_PLATFORM_H "SkMutex_xxx.h" 179 //#define SK_BARRIERS_PLATFORM_H "SkBarriers_xxx.h" 180 181 #endif 182
