skia2/include/private/SkSLDefines.h
Ethan Nicholas daed2592bb Made SkSL DSL into public API
In addition to the unsurprising changes to eliminate references to
src/, we also had to tighten up some C++17-isms as they are not
permitted in public headers.

Change-Id: Ie5005a33d7a135e69fb66beca5e7a5f960dbd453
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/378496
Reviewed-by: Brian Osman <brianosman@google.com>
2021-03-04 21:03:58 +00:00

57 lines
1.6 KiB
C++

/*
* Copyright 2019 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SKSL_DEFINES
#define SKSL_DEFINES
#include <cstdint>
#include "include/core/SkTypes.h"
#include "include/private/SkTArray.h"
#if defined(SK_BUILD_FOR_IOS) && \
(!defined(__IPHONE_9_0) || __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_9_0)
#define SKSL_USE_THREAD_LOCAL 0
#else
#define SKSL_USE_THREAD_LOCAL 1
#endif
using SKSL_INT = int64_t;
using SKSL_FLOAT = float;
namespace SkSL {
class Expression;
class Statement;
using ComponentArray = SkSTArray<4, int8_t>; // for Swizzles
using ExpressionArray = SkSTArray<2, std::unique_ptr<Expression>>;
using StatementArray = SkSTArray<2, std::unique_ptr<Statement>>;
// Functions larger than this (measured in IR nodes) will not be inlined. This growth factor
// accounts for the number of calls being inlined--i.e., a function called five times (that is, with
// five inlining opportunities) would be considered 5x larger than if it were called once. This
// default threshold value is arbitrary, but tends to work well in practice.
static constexpr int kDefaultInlineThreshold = 50;
// The SwizzleComponent namespace is used both by the SkSL::Swizzle expression, and the DSL swizzle.
// This namespace is injected into SkSL::dsl so that `using namespace SkSL::dsl` enables DSL code
// like `Swizzle(var, X, Y, ONE)` to compile without any extra qualifications.
namespace SwizzleComponent {
enum Type : int8_t {
X = 0, Y = 1, Z = 2, W = 3,
R = 0, G = 1, B = 2, A = 3,
ZERO,
ONE
};
} // namespace SwizzleComponent
} // namespace SkSL
#endif