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skia2/include/core/SkPostConfig.h
Brian Salomon 0858e96df4 Enable GL by default if GPU enabled and no backend selected. 
Change-Id: I0e4b1d56edc364217b753886caeea9c158d8be28
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/215644
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
2019-05-24 15:48:50 +00:00

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9.2 KiB
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/*
* Copyright 2006 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
// IWYU pragma: private, include "SkTypes.h"
#ifndef SkPostConfig_DEFINED
#define SkPostConfig_DEFINED
#if !defined(SK_DEBUG) && !defined(SK_RELEASE)
#ifdef NDEBUG
#define SK_RELEASE
#else
#define SK_DEBUG
#endif
#endif
#if defined(SK_DEBUG) && defined(SK_RELEASE)
# error "cannot define both SK_DEBUG and SK_RELEASE"
#elif !defined(SK_DEBUG) && !defined(SK_RELEASE)
# error "must define either SK_DEBUG or SK_RELEASE"
#endif
/**
* Matrix calculations may be float or double.
* The default is float, as that's what Chromium's using.
*/
#if defined(SK_MSCALAR_IS_DOUBLE) && defined(SK_MSCALAR_IS_FLOAT)
# error "cannot define both SK_MSCALAR_IS_DOUBLE and SK_MSCALAR_IS_FLOAT"
#elif !defined(SK_MSCALAR_IS_DOUBLE) && !defined(SK_MSCALAR_IS_FLOAT)
# define SK_MSCALAR_IS_FLOAT
#endif
#if defined(SK_CPU_LENDIAN) && defined(SK_CPU_BENDIAN)
# error "cannot define both SK_CPU_LENDIAN and SK_CPU_BENDIAN"
#elif !defined(SK_CPU_LENDIAN) && !defined(SK_CPU_BENDIAN)
# error "must define either SK_CPU_LENDIAN or SK_CPU_BENDIAN"
#endif
#if defined(SK_CPU_BENDIAN) && !defined(I_ACKNOWLEDGE_SKIA_DOES_NOT_SUPPORT_BIG_ENDIAN)
#error "The Skia team is not endian-savvy enough to support big-endian CPUs."
#error "If you still want to use Skia,"
#error "please define I_ACKNOWLEDGE_SKIA_DOES_NOT_SUPPORT_BIG_ENDIAN."
#endif
#if !defined(SK_HAS_COMPILER_FEATURE)
# if defined(__has_feature)
# define SK_HAS_COMPILER_FEATURE(x) __has_feature(x)
# else
# define SK_HAS_COMPILER_FEATURE(x) 0
# endif
#endif
#if !defined(SK_ATTRIBUTE)
# if defined(__clang__) || defined(__GNUC__)
# define SK_ATTRIBUTE(attr) __attribute__((attr))
# else
# define SK_ATTRIBUTE(attr)
# endif
#endif
#if !defined(SK_SUPPORT_GPU)
# define SK_SUPPORT_GPU 1
#endif
/**
* If GPU is enabled but no GPU backends are enabled then enable GL by default.
* Traditionally clients have relied on Skia always building with the GL backend
* and opting in to additional backends. TODO: Require explicit opt in for GL.
*/
#if SK_SUPPORT_GPU
# if !defined(SK_GL) && !defined(SK_VULKAN) && !defined(SK_METAL)
# define SK_GL
# endif
#endif
#if !defined(SK_SUPPORT_ATLAS_TEXT)
# define SK_SUPPORT_ATLAS_TEXT 0
#elif SK_SUPPORT_ATLAS_TEXT && !SK_SUPPORT_GPU
# error "SK_SUPPORT_ATLAS_TEXT requires SK_SUPPORT_GPU"
#endif
/**
* The clang static analyzer likes to know that when the program is not
* expected to continue (crash, assertion failure, etc). It will notice that
* some combination of parameters lead to a function call that does not return.
* It can then make appropriate assumptions about the parameters in code
* executed only if the non-returning function was *not* called.
*/
#if !defined(SkNO_RETURN_HINT)
# if SK_HAS_COMPILER_FEATURE(attribute_analyzer_noreturn)
static inline void SkNO_RETURN_HINT() __attribute__((analyzer_noreturn));
static inline void SkNO_RETURN_HINT() {}
# else
# define SkNO_RETURN_HINT() do {} while (false)
# endif
#endif
///////////////////////////////////////////////////////////////////////////////
#if defined(SK_BUILD_FOR_GOOGLE3)
void SkDebugfForDumpStackTrace(const char* data, void* unused);
void DumpStackTrace(int skip_count, void w(const char*, void*), void* arg);
# define SK_DUMP_GOOGLE3_STACK() DumpStackTrace(0, SkDebugfForDumpStackTrace, nullptr)
#else
# define SK_DUMP_GOOGLE3_STACK()
#endif
#ifdef SK_BUILD_FOR_WIN
// permits visual studio to follow error back to source
#define SK_DUMP_LINE_FORMAT(message) \
SkDebugf("%s(%d): fatal error: \"%s\"\n", __FILE__, __LINE__, message)
#else
#define SK_DUMP_LINE_FORMAT(message) \
SkDebugf("%s:%d: fatal error: \"%s\"\n", __FILE__, __LINE__, message)
#endif
#ifndef SK_ABORT
# define SK_ABORT(message) \
do { \
SkNO_RETURN_HINT(); \
SK_DUMP_LINE_FORMAT(message); \
SK_DUMP_GOOGLE3_STACK(); \
sk_abort_no_print(); \
} while (false)
#endif
// If SK_R32_SHIFT is set, we'll use that to choose RGBA or BGRA.
// If not, we'll default to RGBA everywhere except BGRA on Windows.
#if defined(SK_R32_SHIFT)
static_assert(SK_R32_SHIFT == 0 || SK_R32_SHIFT == 16, "");
#elif defined(SK_BUILD_FOR_WIN)
#define SK_R32_SHIFT 16
#else
#define SK_R32_SHIFT 0
#endif
#if defined(SK_B32_SHIFT)
static_assert(SK_B32_SHIFT == (16-SK_R32_SHIFT), "");
#else
#define SK_B32_SHIFT (16-SK_R32_SHIFT)
#endif
#define SK_G32_SHIFT 8
#define SK_A32_SHIFT 24
/**
* SkColor has well defined shift values, but SkPMColor is configurable. This
* macro is a convenience that returns true if the shift values are equal while
* ignoring the machine's endianness.
*/
#define SK_COLOR_MATCHES_PMCOLOR_BYTE_ORDER \
(SK_A32_SHIFT == 24 && SK_R32_SHIFT == 16 && SK_G32_SHIFT == 8 && SK_B32_SHIFT == 0)
/**
* SK_PMCOLOR_BYTE_ORDER can be used to query the byte order of SkPMColor at compile time. The
* relationship between the byte order and shift values depends on machine endianness. If the shift
* order is R=0, G=8, B=16, A=24 then ((char*)&pmcolor)[0] will produce the R channel on a little
* endian machine and the A channel on a big endian machine. Thus, given those shifts values,
* SK_PMCOLOR_BYTE_ORDER(R,G,B,A) will be true on a little endian machine and
* SK_PMCOLOR_BYTE_ORDER(A,B,G,R) will be true on a big endian machine.
*/
#ifdef SK_CPU_BENDIAN
# define SK_PMCOLOR_BYTE_ORDER(C0, C1, C2, C3) \
(SK_ ## C3 ## 32_SHIFT == 0 && \
SK_ ## C2 ## 32_SHIFT == 8 && \
SK_ ## C1 ## 32_SHIFT == 16 && \
SK_ ## C0 ## 32_SHIFT == 24)
#else
# define SK_PMCOLOR_BYTE_ORDER(C0, C1, C2, C3) \
(SK_ ## C0 ## 32_SHIFT == 0 && \
SK_ ## C1 ## 32_SHIFT == 8 && \
SK_ ## C2 ## 32_SHIFT == 16 && \
SK_ ## C3 ## 32_SHIFT == 24)
#endif
//////////////////////////////////////////////////////////////////////////////////////////////
#if defined SK_DEBUG && defined SK_BUILD_FOR_WIN
#ifdef free
#undef free
#endif
#include <crtdbg.h>
#undef free
#endif
//////////////////////////////////////////////////////////////////////
#if !defined(SK_UNUSED)
# if !defined(__clang__) && defined(_MSC_VER)
# define SK_UNUSED __pragma(warning(suppress:4189))
# else
# define SK_UNUSED SK_ATTRIBUTE(unused)
# endif
#endif
/**
* If your judgment is better than the compiler's (i.e. you've profiled it),
* you can use SK_ALWAYS_INLINE to force inlining. E.g.
* inline void someMethod() { ... } // may not be inlined
* SK_ALWAYS_INLINE void someMethod() { ... } // should always be inlined
*/
#if !defined(SK_ALWAYS_INLINE)
# if defined(SK_BUILD_FOR_WIN)
# define SK_ALWAYS_INLINE __forceinline
# else
# define SK_ALWAYS_INLINE SK_ATTRIBUTE(always_inline) inline
# endif
#endif
/**
* If your judgment is better than the compiler's (i.e. you've profiled it),
* you can use SK_NEVER_INLINE to prevent inlining.
*/
#if !defined(SK_NEVER_INLINE)
# if defined(SK_BUILD_FOR_WIN)
# define SK_NEVER_INLINE __declspec(noinline)
# else
# define SK_NEVER_INLINE SK_ATTRIBUTE(noinline)
# endif
#endif
//////////////////////////////////////////////////////////////////////
#if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE1
#define SK_PREFETCH(ptr) _mm_prefetch(reinterpret_cast<const char*>(ptr), _MM_HINT_T0)
#define SK_WRITE_PREFETCH(ptr) _mm_prefetch(reinterpret_cast<const char*>(ptr), _MM_HINT_T0)
#elif defined(__GNUC__)
#define SK_PREFETCH(ptr) __builtin_prefetch(ptr)
#define SK_WRITE_PREFETCH(ptr) __builtin_prefetch(ptr, 1)
#else
#define SK_PREFETCH(ptr)
#define SK_WRITE_PREFETCH(ptr)
#endif
//////////////////////////////////////////////////////////////////////
#ifndef SK_PRINTF_LIKE
# if defined(__clang__) || defined(__GNUC__)
# define SK_PRINTF_LIKE(A, B) __attribute__((format(printf, (A), (B))))
# else
# define SK_PRINTF_LIKE(A, B)
# endif
#endif
//////////////////////////////////////////////////////////////////////
#ifndef SK_SIZE_T_SPECIFIER
# if defined(_MSC_VER) && !defined(__clang__)
# define SK_SIZE_T_SPECIFIER "%Iu"
# else
# define SK_SIZE_T_SPECIFIER "%zu"
# endif
#endif
//////////////////////////////////////////////////////////////////////
#ifndef SK_ALLOW_STATIC_GLOBAL_INITIALIZERS
#define SK_ALLOW_STATIC_GLOBAL_INITIALIZERS 0
#endif
//////////////////////////////////////////////////////////////////////
#if !defined(SK_GAMMA_EXPONENT)
#define SK_GAMMA_EXPONENT (0.0f) // SRGB
#endif
//////////////////////////////////////////////////////////////////////
#ifndef GR_TEST_UTILS
# define GR_TEST_UTILS 0
#endif
//////////////////////////////////////////////////////////////////////
#if defined(SK_HISTOGRAM_ENUMERATION) && defined(SK_HISTOGRAM_BOOLEAN)
# define SK_HISTOGRAMS_ENABLED 1
#else
# define SK_HISTOGRAMS_ENABLED 0
#endif
#ifndef SK_HISTOGRAM_BOOLEAN
# define SK_HISTOGRAM_BOOLEAN(name, value)
#endif
#ifndef SK_HISTOGRAM_ENUMERATION
# define SK_HISTOGRAM_ENUMERATION(name, value, boundary_value)
#endif
#ifndef SK_DISABLE_LEGACY_SHADERCONTEXT
#define SK_ENABLE_LEGACY_SHADERCONTEXT
#endif
#endif // SkPostConfig_DEFINED
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