/* * 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 /////////////////////////////////////////////////////////////////////////////// // 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 #endif /** * Gr defines are set to 0 or 1, rather than being undefined or defined */ #if !defined(GR_ANDROID_BUILD) #define GR_ANDROID_BUILD 0 #endif #if !defined(GR_IOS_BUILD) #define GR_IOS_BUILD 0 #endif #if !defined(GR_LINUX_BUILD) #define GR_LINUX_BUILD 0 #endif #if !defined(GR_MAC_BUILD) #define GR_MAC_BUILD 0 #endif #if !defined(GR_WIN32_BUILD) #define GR_WIN32_BUILD 0 #endif #if !defined(GR_QNX_BUILD) #define GR_QNX_BUILD 0 #endif /** * If no build target has been defined, attempt to infer. */ #if !GR_ANDROID_BUILD && !GR_IOS_BUILD && !GR_LINUX_BUILD && !GR_MAC_BUILD && !GR_WIN32_BUILD && !GR_QNX_BUILD #if defined(_WIN32) #undef GR_WIN32_BUILD #define GR_WIN32_BUILD 1 // #error "WIN" #elif TARGET_OS_IPHONE || TARGET_IPHONE_SIMULATOR #undef GR_IOS_BUILD #define GR_IOS_BUILD 1 // #error "IOS" #elif defined(SK_BUILD_FOR_ANDROID) #undef GR_ANDROID_BUILD #define GR_ANDROID_BUILD 1 // #error "ANDROID" #elif TARGET_OS_MAC #undef GR_MAC_BUILD #define GR_MAC_BUILD 1 // #error "MAC" #elif TARGET_OS_QNX || defined(__QNXNTO__) #undef GR_QNX_BUILD #define GR_QNX_BUILD 1 // #error "QNX" #else #undef GR_LINUX_BUILD #define GR_LINUX_BUILD 1 // #error "LINUX" #endif #endif // we need both GR_DEBUG and GR_RELEASE to be defined as 0 or 1 // #ifndef GR_DEBUG #ifdef GR_RELEASE #define GR_DEBUG !GR_RELEASE #else #ifdef NDEBUG #define GR_DEBUG 0 #else #define GR_DEBUG 1 #endif #endif #endif #ifndef GR_RELEASE #define GR_RELEASE !GR_DEBUG #endif #if GR_DEBUG == GR_RELEASE #error "GR_DEBUG and GR_RELEASE must not be the same" #endif /////////////////////////////////////////////////////////////////////////////// /////////////////////////////////////////////////////////////////////////////// #if GR_WIN32_BUILD // 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. */ #define __STDC_LIMIT_MACROS #define __STDC_CONSTANT_MACROS #include #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 specify GR_DEBUG/GR_RELEASE as it please, change the BUILD * target, or supply its own defines for anything else (e.g. GR_SCALAR) */ #if !defined(GR_USER_CONFIG_FILE) #include "GrUserConfig.h" #else #include GR_USER_CONFIG_FILE #endif /////////////////////////////////////////////////////////////////////////////// /////////////////////////////////////////////////////////////////////////////// // postconfig section: // // GR_IMPLEMENTATION should be define to 1 when building Gr and 0 when including // it in another dependent build. The Gr makefile/ide-project should define this // to 1. #if !defined(GR_IMPLEMENTATION) #define GR_IMPLEMENTATION 0 #endif // If Gr is built as a shared library then GR_DLL should be defined to 1 (both // when building Gr and when including its headers in dependent builds). Only // currently supported minimally for Chrome's Win32 Multi-DLL build (TODO: // correctly exort all of the public API correctly and support shared lib on // other platforms). #if !defined(GR_DLL) #define GR_DLL 0 #endif #if GR_DLL #if GR_WIN32_BUILD #if GR_IMPLEMENTATION #define GR_API __declspec(dllexport) #else #define GR_API __declspec(dllimport) #endif #else #define GR_API __attribute__((visibility("default"))) #endif #else #define GR_API #endif // 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 "() : " */ #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()" */ #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 GR_WIN32_BUILD #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) #if GR_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) #if GR_DEBUG #define GR_DEBUGASSERT(COND) GR_ALWAYSASSERT(COND) #else #define GR_DEBUGASSERT(COND) #endif #endif /** * Prettier forms of the above macros. */ #define GrAssert(COND) GR_DEBUGASSERT(COND) #define GrAlwaysAssert(COND) GR_ALWAYSASSERT(COND) /** * Crash from unrecoverable condition, optionally with a message. */ inline void GrCrash() { GrAlwaysAssert(false); } inline void GrCrash(const char* msg) { GrPrintf(msg); GrAlwaysAssert(false); } /** * GR_DEBUGCODE compiles the code X in debug builds only */ #if !defined(GR_DEBUGCODE) #if GR_DEBUG #define GR_DEBUGCODE(X) X #else #define GR_DEBUGCODE(X) #endif #endif /** * 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 class GR_STATIC_ASSERT_FAILURE; template <> class GR_STATIC_ASSERT_FAILURE {}; #define GR_STATIC_ASSERT(CONDITION) \ enum {GR_CONCAT(X,__LINE__) = \ sizeof(GR_STATIC_ASSERT_FAILURE)} #endif #endif #if !defined(GR_SCALAR_IS_FLOAT) #define GR_SCALAR_IS_FLOAT 0 #endif #if !defined(GR_SCALAR_IS_FIXED) #define GR_SCALAR_IS_FIXED 0 #endif #if !defined(GR_TEXT_SCALAR_TYPE_IS_USHORT) #define GR_TEXT_SCALAR_TYPE_IS_USHORT 0 #endif #if !defined(GR_TEXT_SCALAR_TYPE_IS_FLOAT) #define GR_TEXT_SCALAR_TYPE_IS_FLOAT 0 #endif #if !defined(GR_TEXT_SCALAR_TYPE_IS_FIXED) #define GR_TEXT_SCALAR_TYPE_IS_FIXED 0 #endif #ifndef GR_DUMP_TEXTURE_UPLOAD #define GR_DUMP_TEXTURE_UPLOAD 0 #endif /** * GR_STATIC_RECT_VB controls whether rects are drawn by issuing a vertex * for each corner or using a static vb that is positioned by modifying the * view / texture matrix. */ #if !defined(GR_STATIC_RECT_VB) #define GR_STATIC_RECT_VB 0 #endif /** * GR_DISABLE_DRAW_BUFFERING prevents GrContext from queueing draws in a * GrInOrderDrawBuffer. */ #if !defined(GR_DISABLE_DRAW_BUFFERING) #define GR_DISABLE_DRAW_BUFFERING 0 #endif /** * GR_AGGRESSIVE_SHADER_OPTS controls how aggressively shaders are optimized * for special cases. On systems where program changes are expensive this * may not be advantageous. Consecutive draws may no longer use the same * program. */ #if !defined(GR_AGGRESSIVE_SHADER_OPTS) #define GR_AGGRESSIVE_SHADER_OPTS 1 #endif /** * GR_GEOM_BUFFER_LOCK_THRESHOLD gives a threshold (in bytes) for when Gr should * lock a GrGeometryBuffer to update its contents. It will use lock() if the * size of the updated region is greater than the threshold. Otherwise it will * use updateData(). */ #if !defined(GR_GEOM_BUFFER_LOCK_THRESHOLD) #define GR_GEOM_BUFFER_LOCK_THRESHOLD (1 << 15) #endif /////////////////////////////////////////////////////////////////////////////// // tail section: // // Now we just assert if we are missing some required define, or if we detect // and inconsistent combination of defines // /** * Only one build target macro should be 1 and the rest should be 0. */ #define GR_BUILD_SUM (GR_WIN32_BUILD + GR_MAC_BUILD + GR_IOS_BUILD + GR_ANDROID_BUILD + GR_LINUX_BUILD + GR_QNX_BUILD) #if 0 == GR_BUILD_SUM #error "Missing a GR_BUILD define" #elif 1 != GR_BUILD_SUM #error "More than one GR_BUILD defined" #endif #if !GR_SCALAR_IS_FLOAT && !GR_SCALAR_IS_FIXED #undef GR_SCALAR_IS_FLOAT #define GR_SCALAR_IS_FLOAT 1 #pragma message GR_WARN("Scalar type not defined, defaulting to float") #endif #if !GR_TEXT_SCALAR_IS_FLOAT && \ !GR_TEXT_SCALAR_IS_FIXED && \ !GR_TEXT_SCALAR_IS_USHORT #undef GR_TEXT_SCALAR_IS_FLOAT #define GR_TEXT_SCALAR_IS_FLOAT 1 #pragma message GR_WARN("Text scalar type not defined, defaulting to float") #endif #if 0 #if GR_WIN32_BUILD // #pragma message GR_WARN("GR_WIN32_BUILD") #endif #if GR_MAC_BUILD // #pragma message GR_WARN("GR_MAC_BUILD") #endif #if GR_IOS_BUILD // #pragma message GR_WARN("GR_IOS_BUILD") #endif #if GR_ANDROID_BUILD // #pragma message GR_WARN("GR_ANDROID_BUILD") #endif #if GR_LINUX_BUILD // #pragma message GR_WARN("GR_LINUX_BUILD") #endif #if GR_QNX_BUILD // #pragma message GR_WARN("GR_QNX_BUILD") #endif #endif #endif