3 * Copyright 2010 Google Inc.
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
11 #ifndef GrConfig_DEFINED
12 #define GrConfig_DEFINED
16 ///////////////////////////////////////////////////////////////////////////////
19 // All the work before including GrUserConfig.h should center around guessing
20 // what platform we're on, and defining low-level symbols based on that.
22 // A build environment may have already defined symbols, so we first check
26 // hack to ensure we know what sort of Apple platform we're on
27 #if defined(__APPLE_CPP__) || defined(__APPLE_CC__)
28 #include <TargetConditionals.h>
32 * Gr defines are set to 0 or 1, rather than being undefined or defined
35 #if !defined(GR_CACHE_STATS)
36 #define GR_CACHE_STATS 0
39 #if !defined(GR_GPU_STATS)
40 #define GR_GPU_STATS 0
43 ///////////////////////////////////////////////////////////////////////////////
44 ///////////////////////////////////////////////////////////////////////////////
46 #if defined(SK_BUILD_FOR_WIN32)
47 // VC8 doesn't support stdint.h, so we define those types here.
48 typedef signed char int8_t;
49 typedef unsigned char uint8_t;
50 typedef short int16_t;
51 typedef unsigned short uint16_t;
53 typedef unsigned uint32_t;
54 typedef __int64 int64_t;
55 typedef unsigned __int64 uint64_t;
58 * Include stdint.h with defines that trigger declaration of C99 limit/const
59 * macros here before anyone else has a chance to include stdint.h without
62 #ifndef __STDC_LIMIT_MACROS
63 #define __STDC_LIMIT_MACROS
65 #ifndef __STDC_CONSTANT_MACROS
66 #define __STDC_CONSTANT_MACROS
72 * The "user config" file can be empty, and everything should work. It is
73 * meant to store a given platform/client's overrides of our guess-work.
75 * A alternate user config file can be specified by defining
76 * GR_USER_CONFIG_FILE. It should be defined relative to GrConfig.h
78 * e.g. it can change the BUILD target or supply its own defines for anything
79 * else (e.g. GR_DEFAULT_RESOURCE_CACHE_MB_LIMIT)
81 #if !defined(GR_USER_CONFIG_FILE)
82 #include "GrUserConfig.h"
84 #include GR_USER_CONFIG_FILE
88 ///////////////////////////////////////////////////////////////////////////////
89 ///////////////////////////////////////////////////////////////////////////////
90 // postconfig section:
93 // By now we must have a GR_..._BUILD symbol set to 1, and a decision about
97 #define GrPrintf SkDebugf
100 * GR_STRING makes a string of X where X is expanded before conversion to a string
101 * if X itself contains macros.
103 #define GR_STRING(X) GR_STRING_IMPL(X)
104 #define GR_STRING_IMPL(X) #X
107 * GR_CONCAT concatenates X and Y where each is expanded before
108 * contanenation if either contains macros.
110 #define GR_CONCAT(X,Y) GR_CONCAT_IMPL(X,Y)
111 #define GR_CONCAT_IMPL(X,Y) X##Y
114 * Creates a string of the form "<filename>(<linenumber>) : "
116 #define GR_FILE_AND_LINE_STR __FILE__ "(" GR_STRING(__LINE__) ") : "
119 * Compilers have different ways of issuing warnings. This macro
120 * attempts to abstract them, but may need to be specialized for your
121 * particular compiler.
122 * To insert compiler warnings use "#pragma message GR_WARN(<string>)"
124 #if defined(_MSC_VER) && _MSC_VER
125 #define GR_WARN(MSG) (GR_FILE_AND_LINE_STR "WARNING: " MSG)
126 #else//__GNUC__ - may need other defines for different compilers
127 #define GR_WARN(MSG) ("WARNING: " MSG)
131 * GR_ALWAYSBREAK is an unconditional break in all builds.
133 #if !defined(GR_ALWAYSBREAK)
134 #if defined(SK_BUILD_FOR_WIN32)
135 #define GR_ALWAYSBREAK SkNO_RETURN_HINT(); __debugbreak()
137 // TODO: do other platforms really not have continuable breakpoints?
138 // sign extend for 64bit architectures to be sure this is
139 // in the high address range
140 #define GR_ALWAYSBREAK SkNO_RETURN_HINT(); *((int*)(int64_t)(int32_t)0xbeefcafe) = 0;
145 * GR_DEBUGBREAK is an unconditional break in debug builds.
147 #if !defined(GR_DEBUGBREAK)
149 #define GR_DEBUGBREAK GR_ALWAYSBREAK
151 #define GR_DEBUGBREAK
156 * GR_ALWAYSASSERT is an assertion in all builds.
158 #if !defined(GR_ALWAYSASSERT)
159 #define GR_ALWAYSASSERT(COND) \
162 GrPrintf("%s %s failed\n", GR_FILE_AND_LINE_STR, #COND); \
169 * GR_DEBUGASSERT is an assertion in debug builds only.
171 #if !defined(GR_DEBUGASSERT)
173 #define GR_DEBUGASSERT(COND) GR_ALWAYSASSERT(COND)
175 #define GR_DEBUGASSERT(COND)
180 * Prettier forms of the above macros.
182 #define GrAlwaysAssert(COND) GR_ALWAYSASSERT(COND)
185 * GR_STATIC_ASSERT is a compile time assertion. Depending on the platform
186 * it may print the message in the compiler log. Obviously, the condition must
187 * be evaluatable at compile time.
189 // VS 2010 and GCC compiled with c++0x or gnu++0x support the new
191 #if !defined(GR_STATIC_ASSERT)
192 #if (defined(_MSC_VER) && _MSC_VER >= 1600) || (defined(__GXX_EXPERIMENTAL_CXX0X__) && __GXX_EXPERIMENTAL_CXX0X__)
193 #define GR_STATIC_ASSERT(CONDITION) static_assert(CONDITION, "bug")
195 template <bool> class GR_STATIC_ASSERT_FAILURE;
196 template <> class GR_STATIC_ASSERT_FAILURE<true> {};
197 #define GR_STATIC_ASSERT(CONDITION) \
198 enum {GR_CONCAT(X,__LINE__) = \
199 sizeof(GR_STATIC_ASSERT_FAILURE<CONDITION>)}
204 * GR_GEOM_BUFFER_MAP_THRESHOLD gives a threshold (in bytes) for when Gr should
205 * map a GrGeometryBuffer to update its contents. It will use map() if the
206 * size of the updated region is greater than the threshold. Otherwise it will
209 #if !defined(GR_GEOM_BUFFER_MAP_THRESHOLD)
210 #define GR_GEOM_BUFFER_MAP_THRESHOLD (1 << 15)
214 * GR_DEFAULT_RESOURCE_CACHE_MB_LIMIT gives a threshold (in megabytes) for the
215 * maximum size of the texture cache in vram. The value is only a default and
216 * can be overridden at runtime.
218 #if !defined(GR_DEFAULT_RESOURCE_CACHE_MB_LIMIT)
219 #define GR_DEFAULT_RESOURCE_CACHE_MB_LIMIT 96
223 * GR_DEFAULT_RESOURCE_CACHE_COUNT_LIMIT specifies the maximum number of
224 * textures the texture cache can hold in vram. The value is only a default and
225 * can be overridden at runtime.
227 #if !defined(GR_DEFAULT_RESOURCE_CACHE_COUNT_LIMIT)
228 #define GR_DEFAULT_RESOURCE_CACHE_COUNT_LIMIT 2048
232 * GR_STROKE_PATH_RENDERING controls whether or not the GrStrokePathRenderer can be selected
233 * as a path renderer. GrStrokePathRenderer is currently an experimental path renderer.
235 #if !defined(GR_STROKE_PATH_RENDERING)
236 #define GR_STROKE_PATH_RENDERING 0
240 * GR_ALWAYS_ALLOCATE_ON_HEAP determines whether various temporary buffers created
241 * in the GPU backend are always allocated on the heap or are allowed to be
242 * allocated on the stack for smaller memory requests.
244 * This is only used for memory buffers that are created and then passed through to the
245 * 3D API (e.g. as texture or geometry data)
247 #if !defined(GR_ALWAYS_ALLOCATE_ON_HEAP)
248 #define GR_ALWAYS_ALLOCATE_ON_HEAP 0