1 /* 2 * Copyright 2019 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef SKSL_DEFINES 9 #define SKSL_DEFINES 10 11 #include <cstdint> 12 13 #include "include/core/SkTypes.h" 14 #include "include/private/SkTArray.h" 15 16 using SKSL_INT = int64_t; 17 using SKSL_FLOAT = float; 18 19 namespace SkSL { 20 21 class Expression; 22 class Statement; 23 24 using ComponentArray = SkSTArray<4, int8_t>; // for Swizzles 25 using ExpressionArray = SkSTArray<2, std::unique_ptr<Expression>>; 26 using StatementArray = SkSTArray<2, std::unique_ptr<Statement>>; 27 28 // Functions larger than this (measured in IR nodes) will not be inlined. This growth factor 29 // accounts for the number of calls being inlined--i.e., a function called five times (that is, with 30 // five inlining opportunities) would be considered 5x larger than if it were called once. This 31 // default threshold value is arbitrary, but tends to work well in practice. 32 static constexpr int kDefaultInlineThreshold = 50; 33 34 // A hard upper limit on the number of variable slots allowed in a function/global scope. 35 // This is an arbitrary limit, but is needed to prevent code generation from taking unbounded 36 // amounts of time or space. 37 static constexpr int kVariableSlotLimit = 100000; 38 39 // The SwizzleComponent namespace is used both by the SkSL::Swizzle expression, and the DSL swizzle. 40 // This namespace is injected into SkSL::dsl so that `using namespace SkSL::dsl` enables DSL code 41 // like `Swizzle(var, X, Y, ONE)` to compile without any extra qualifications. 42 namespace SwizzleComponent { 43 44 enum Type : int8_t { 45 X = 0, Y = 1, Z = 2, W = 3, 46 R = 4, G = 5, B = 6, A = 7, 47 S = 8, T = 9, P = 10, Q = 11, 48 UL = 12, UT = 13, UR = 14, UB = 15, 49 ZERO, 50 ONE 51 }; 52 53 } // namespace SwizzleComponent 54 } // namespace SkSL 55 56 #endif 57