gfx/angle/src/compiler/BuiltInFunctionEmulator.h@129ffea94266
gfx/angle/src/compiler/BuiltInFunctionEmulator.h
Sat, 03 Jan 2015 20:18:00 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Sat, 03 Jan 2015 20:18:00 +0100
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
- permissions
- -rw-r--r--
Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.
1 //
2 // Copyright (c) 2011 The ANGLE Project Authors. All rights reserved.
3 // Use of this source code is governed by a BSD-style license that can be
4 // found in the LICENSE file.
5 //
7 #ifndef COMPILIER_BUILT_IN_FUNCTION_EMULATOR_H_
8 #define COMPILIER_BUILT_IN_FUNCTION_EMULATOR_H_
10 #include "GLSLANG/ShaderLang.h"
12 #include "compiler/InfoSink.h"
13 #include "compiler/intermediate.h"
15 //
16 // This class decides which built-in functions need to be replaced with the
17 // emulated ones.
18 // It's only a workaround for OpenGL driver bugs, and isn't needed in general.
19 //
20 class BuiltInFunctionEmulator {
21 public:
22 BuiltInFunctionEmulator(ShShaderType shaderType);
23 // Records that a function is called by the shader and might needs to be
24 // emulated. If the function's group is not in mFunctionGroupFilter, this
25 // becomes an no-op.
26 // Returns true if the function call needs to be replaced with an emulated
27 // one.
28 bool SetFunctionCalled(TOperator op, const TType& param);
29 bool SetFunctionCalled(
30 TOperator op, const TType& param1, const TType& param2);
31 bool SetFunctionCalled(
32 TOperator op, const TType& param1, const TType& param2, const TType& param3);
34 // Output function emulation definition. This should be before any other
35 // shader source.
36 void OutputEmulatedFunctionDefinition(TInfoSinkBase& out, bool withPrecision) const;
38 void MarkBuiltInFunctionsForEmulation(TIntermNode* root);
40 void Cleanup();
42 // "name(" becomes "webgl_name_emu(".
43 static TString GetEmulatedFunctionName(const TString& name);
45 private:
46 //
47 // Built-in functions.
48 //
49 enum TBuiltInFunction {
50 TFunctionCos1 = 0, // float cos(float);
51 TFunctionCos2, // vec2 cos(vec2);
52 TFunctionCos3, // vec3 cos(vec3);
53 TFunctionCos4, // vec4 cos(vec4);
55 TFunctionDistance1_1, // float distance(float, float);
56 TFunctionDistance2_2, // vec2 distance(vec2, vec2);
57 TFunctionDistance3_3, // vec3 distance(vec3, vec3);
58 TFunctionDistance4_4, // vec4 distance(vec4, vec4);
60 TFunctionDot1_1, // float dot(float, float);
61 TFunctionDot2_2, // vec2 dot(vec2, vec2);
62 TFunctionDot3_3, // vec3 dot(vec3, vec3);
63 TFunctionDot4_4, // vec4 dot(vec4, vec4);
65 TFunctionFaceForward1_1_1, // float faceforward(float, float, float);
66 TFunctionFaceForward2_2_2, // vec2 faceforward(vec2, vec2, vec2);
67 TFunctionFaceForward3_3_3, // vec3 faceforward(vec3, vec3, vec3);
68 TFunctionFaceForward4_4_4, // vec4 faceforward(vec4, vec4, vec4);
70 TFunctionLength1, // float length(float);
71 TFunctionLength2, // float length(vec2);
72 TFunctionLength3, // float length(vec3);
73 TFunctionLength4, // float length(vec4);
75 TFunctionNormalize1, // float normalize(float);
76 TFunctionNormalize2, // vec2 normalize(vec2);
77 TFunctionNormalize3, // vec3 normalize(vec3);
78 TFunctionNormalize4, // vec4 normalize(vec4);
80 TFunctionReflect1_1, // float reflect(float, float);
81 TFunctionReflect2_2, // vec2 reflect(vec2, vec2);
82 TFunctionReflect3_3, // vec3 reflect(vec3, vec3);
83 TFunctionReflect4_4, // vec4 reflect(vec4, vec4);
85 TFunctionUnknown
86 };
88 TBuiltInFunction IdentifyFunction(TOperator op, const TType& param);
89 TBuiltInFunction IdentifyFunction(
90 TOperator op, const TType& param1, const TType& param2);
91 TBuiltInFunction IdentifyFunction(
92 TOperator op, const TType& param1, const TType& param2, const TType& param3);
94 bool SetFunctionCalled(TBuiltInFunction function);
96 std::vector<TBuiltInFunction> mFunctions;
98 const bool* mFunctionMask; // a boolean flag for each function.
99 const char** mFunctionSource;
100 };
102 #endif // COMPILIER_BUILT_IN_FUNCTION_EMULATOR_H_
