aboutsummaryrefslogtreecommitdiffhomepage
path: root/include/gpu/GrConfig.h
blob: c0d90a368040ddae5da739698fd12efe482157d0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235

/*
 * Copyright 2010 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */



#ifndef GrConfig_DEFINED
#define GrConfig_DEFINED

#include "SkTypes.h"

///////////////////////////////////////////////////////////////////////////////
// preconfig section:
//
// All the work before including GrUserConfig.h should center around guessing
// what platform we're on, and defining low-level symbols based on that.
//
// A build environment may have already defined symbols, so we first check
// for that
//

// hack to ensure we know what sort of Apple platform we're on
#if defined(__APPLE_CPP__) || defined(__APPLE_CC__)
    #include <TargetConditionals.h>
#endif

/**
 *  Gr defines are set to 0 or 1, rather than being undefined or defined
 */

#if !defined(GR_CACHE_STATS)
    #define GR_CACHE_STATS      0
#endif

///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////

#if defined(SK_BUILD_FOR_WIN32)
// VC8 doesn't support stdint.h, so we define those types here.
typedef signed char int8_t;
typedef unsigned char uint8_t;
typedef short int16_t;
typedef unsigned short uint16_t;
typedef int int32_t;
typedef unsigned uint32_t;
typedef __int64 int64_t;
typedef unsigned __int64 uint64_t;
#else
/*
 *  Include stdint.h with defines that trigger declaration of C99 limit/const
 *  macros here before anyone else has a chance to include stdint.h without
 *  these.
 */
#ifndef __STDC_LIMIT_MACROS
#define __STDC_LIMIT_MACROS
#endif
#ifndef __STDC_CONSTANT_MACROS
#define __STDC_CONSTANT_MACROS
#endif
#include <stdint.h>
#endif

/*
 *  The "user config" file can be empty, and everything should work. It is
 *  meant to store a given platform/client's overrides of our guess-work.
 *
 *  A alternate user config file can be specified by defining
 *  GR_USER_CONFIG_FILE. It should be defined relative to GrConfig.h
 *
 *  e.g. it can change the BUILD target or supply its own defines for anything
 *  else (e.g. GR_DEFAULT_RESOURCE_CACHE_MB_LIMIT)
 */
#if !defined(GR_USER_CONFIG_FILE)
    #include "GrUserConfig.h"
#else
    #include GR_USER_CONFIG_FILE
#endif


///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
// postconfig section:
//

// By now we must have a GR_..._BUILD symbol set to 1, and a decision about
// debug -vs- release
//

#define GrPrintf SkDebugf

/**
 *  GR_STRING makes a string of X where X is expanded before conversion to a string
 *  if X itself contains macros.
 */
#define GR_STRING(X) GR_STRING_IMPL(X)
#define GR_STRING_IMPL(X) #X

/**
 *  GR_CONCAT concatenates X and Y  where each is expanded before
 *  contanenation if either contains macros.
 */
#define GR_CONCAT(X,Y) GR_CONCAT_IMPL(X,Y)
#define GR_CONCAT_IMPL(X,Y) X##Y

/**
 *  Creates a string of the form "<filename>(<linenumber>) : "
 */
#define GR_FILE_AND_LINE_STR __FILE__ "(" GR_STRING(__LINE__) ") : "

/**
 *  Compilers have different ways of issuing warnings. This macro
 *  attempts to abstract them, but may need to be specialized for your
 *  particular compiler.
 *  To insert compiler warnings use "#pragma message GR_WARN(<string>)"
 */
#if defined(_MSC_VER) && _MSC_VER
    #define GR_WARN(MSG) (GR_FILE_AND_LINE_STR "WARNING: " MSG)
#else//__GNUC__ - may need other defines for different compilers
    #define GR_WARN(MSG) ("WARNING: " MSG)
#endif

/**
 *  GR_ALWAYSBREAK is an unconditional break in all builds.
 */
#if !defined(GR_ALWAYSBREAK)
    #if     defined(SK_BUILD_FOR_WIN32)
        #define GR_ALWAYSBREAK SkNO_RETURN_HINT(); __debugbreak()
    #else
        // TODO: do other platforms really not have continuable breakpoints?
        // sign extend for 64bit architectures to be sure this is
        // in the high address range
        #define GR_ALWAYSBREAK SkNO_RETURN_HINT(); *((int*)(int64_t)(int32_t)0xbeefcafe) = 0;
    #endif
#endif

/**
 *  GR_DEBUGBREAK is an unconditional break in debug builds.
 */
#if !defined(GR_DEBUGBREAK)
    #ifdef SK_DEBUG
        #define GR_DEBUGBREAK GR_ALWAYSBREAK
    #else
        #define GR_DEBUGBREAK
    #endif
#endif

/**
 *  GR_ALWAYSASSERT is an assertion in all builds.
 */
#if !defined(GR_ALWAYSASSERT)
    #define GR_ALWAYSASSERT(COND)                                        \
        do {                                                             \
            if (!(COND)) {                                               \
                GrPrintf("%s %s failed\n", GR_FILE_AND_LINE_STR, #COND); \
                GR_ALWAYSBREAK;                                          \
            }                                                            \
        } while (false)
#endif

/**
 *  GR_DEBUGASSERT is an assertion in debug builds only.
 */
#if !defined(GR_DEBUGASSERT)
    #ifdef SK_DEBUG
        #define GR_DEBUGASSERT(COND) GR_ALWAYSASSERT(COND)
    #else
        #define GR_DEBUGASSERT(COND)
    #endif
#endif

/**
 *  Prettier forms of the above macros.
 */
#define GrAlwaysAssert(COND) GR_ALWAYSASSERT(COND)

/**
 *  GR_STATIC_ASSERT is a compile time assertion. Depending on the platform
 *  it may print the message in the compiler log. Obviously, the condition must
 *  be evaluatable at compile time.
 */
// VS 2010 and GCC compiled with c++0x or gnu++0x support the new
// static_assert.
#if !defined(GR_STATIC_ASSERT)
    #if (defined(_MSC_VER) && _MSC_VER >= 1600) || (defined(__GXX_EXPERIMENTAL_CXX0X__) && __GXX_EXPERIMENTAL_CXX0X__)
        #define GR_STATIC_ASSERT(CONDITION) static_assert(CONDITION, "bug")
    #else
        template <bool> class GR_STATIC_ASSERT_FAILURE;
        template <> class GR_STATIC_ASSERT_FAILURE<true> {};
        #define GR_STATIC_ASSERT(CONDITION) \
            enum {GR_CONCAT(X,__LINE__) = \
            sizeof(GR_STATIC_ASSERT_FAILURE<CONDITION>)}
    #endif
#endif

/**
 * GR_GEOM_BUFFER_MAP_THRESHOLD gives a threshold (in bytes) for when Gr should
 * map a GrGeometryBuffer to update its contents. It will use map() if the
 * size of the updated region is greater than the threshold. Otherwise it will
 * use updateData().
 */
#if !defined(GR_GEOM_BUFFER_MAP_THRESHOLD)
    #define GR_GEOM_BUFFER_MAP_THRESHOLD (1 << 15)
#endif

/**
 * GR_DEFAULT_RESOURCE_CACHE_MB_LIMIT gives a threshold (in megabytes) for the
 * maximum size of the texture cache in vram. The value is only a default and
 * can be overridden at runtime.
 */
#if !defined(GR_DEFAULT_RESOURCE_CACHE_MB_LIMIT)
    #define GR_DEFAULT_RESOURCE_CACHE_MB_LIMIT 96
#endif

/**
 * GR_DEFAULT_RESOURCE_CACHE_COUNT_LIMIT specifies the maximum number of
 * textures the texture cache can hold in vram. The value is only a default and
 * can be overridden at runtime.
 */
#if !defined(GR_DEFAULT_RESOURCE_CACHE_COUNT_LIMIT)
    #define GR_DEFAULT_RESOURCE_CACHE_COUNT_LIMIT 2048
#endif

/**
 * GR_STROKE_PATH_RENDERING controls whether or not the GrStrokePathRenderer can be selected
 * as a path renderer. GrStrokePathRenderer is currently an experimental path renderer.
 */
#if !defined(GR_STROKE_PATH_RENDERING)
    #define GR_STROKE_PATH_RENDERING                 0
#endif

#endif