SkSLModifiers.h 3.0 KB

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  1. /*
  2. * Copyright 2016 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. #ifndef SKSL_MODIFIERS
  8. #define SKSL_MODIFIERS
  9. #include "src/sksl/ir/SkSLLayout.h"
  10. namespace SkSL {
  11. /**
  12. * A set of modifier keywords (in, out, uniform, etc.) appearing before a declaration.
  13. */
  14. struct Modifiers {
  15. enum Flag {
  16. kNo_Flag = 0,
  17. kConst_Flag = 1 << 0,
  18. kIn_Flag = 1 << 1,
  19. kOut_Flag = 1 << 2,
  20. kUniform_Flag = 1 << 3,
  21. kFlat_Flag = 1 << 4,
  22. kNoPerspective_Flag = 1 << 5,
  23. kReadOnly_Flag = 1 << 6,
  24. kWriteOnly_Flag = 1 << 7,
  25. kCoherent_Flag = 1 << 8,
  26. kVolatile_Flag = 1 << 9,
  27. kRestrict_Flag = 1 << 10,
  28. kBuffer_Flag = 1 << 11,
  29. kHasSideEffects_Flag = 1 << 12,
  30. kPLS_Flag = 1 << 13,
  31. kPLSIn_Flag = 1 << 14,
  32. kPLSOut_Flag = 1 << 15,
  33. };
  34. Modifiers()
  35. : fLayout(Layout())
  36. , fFlags(0) {}
  37. Modifiers(const Layout& layout, int flags)
  38. : fLayout(layout)
  39. , fFlags(flags) {}
  40. String description() const {
  41. String result = fLayout.description();
  42. if (fFlags & kUniform_Flag) {
  43. result += "uniform ";
  44. }
  45. if (fFlags & kConst_Flag) {
  46. result += "const ";
  47. }
  48. if (fFlags & kFlat_Flag) {
  49. result += "flat ";
  50. }
  51. if (fFlags & kNoPerspective_Flag) {
  52. result += "noperspective ";
  53. }
  54. if (fFlags & kReadOnly_Flag) {
  55. result += "readonly ";
  56. }
  57. if (fFlags & kWriteOnly_Flag) {
  58. result += "writeonly ";
  59. }
  60. if (fFlags & kCoherent_Flag) {
  61. result += "coherent ";
  62. }
  63. if (fFlags & kVolatile_Flag) {
  64. result += "volatile ";
  65. }
  66. if (fFlags & kRestrict_Flag) {
  67. result += "restrict ";
  68. }
  69. if (fFlags & kBuffer_Flag) {
  70. result += "buffer ";
  71. }
  72. if (fFlags & kHasSideEffects_Flag) {
  73. result += "sk_has_side_effects ";
  74. }
  75. if (fFlags & kPLS_Flag) {
  76. result += "__pixel_localEXT ";
  77. }
  78. if (fFlags & kPLSIn_Flag) {
  79. result += "__pixel_local_inEXT ";
  80. }
  81. if (fFlags & kPLSOut_Flag) {
  82. result += "__pixel_local_outEXT ";
  83. }
  84. if ((fFlags & kIn_Flag) && (fFlags & kOut_Flag)) {
  85. result += "inout ";
  86. } else if (fFlags & kIn_Flag) {
  87. result += "in ";
  88. } else if (fFlags & kOut_Flag) {
  89. result += "out ";
  90. }
  91. return result;
  92. }
  93. bool operator==(const Modifiers& other) const {
  94. return fLayout == other.fLayout && fFlags == other.fFlags;
  95. }
  96. bool operator!=(const Modifiers& other) const {
  97. return !(*this == other);
  98. }
  99. Layout fLayout;
  100. int fFlags;
  101. };
  102. } // namespace
  103. #endif