1// Copyright 2016 The SwiftShader Authors. All Rights Reserved.
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//    http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15//
16// Create strings that declare built-in definitions, add built-ins that
17// cannot be expressed in the files, and establish mappings between
18// built-in functions and operators.
19//
20
21#include "Initialize.h"
22
23#include "intermediate.h"
24
25void InsertBuiltInFunctions(GLenum type, const ShBuiltInResources &resources, TSymbolTable &symbolTable)
26{
27	TType *float1 = new TType(EbtFloat);
28	TType *float2 = new TType(EbtFloat, 2);
29	TType *float3 = new TType(EbtFloat, 3);
30	TType *float4 = new TType(EbtFloat, 4);
31	TType *genType = new TType(EbtGenType);
32
33	TType *int1 = new TType(EbtInt);
34	TType *int2 = new TType(EbtInt, 2);
35	TType *int3 = new TType(EbtInt, 3);
36	TType *uint1 = new TType(EbtUInt);
37	TType *genIType = new TType(EbtGenIType);
38	TType *genUType = new TType(EbtGenUType);
39	TType *genBType = new TType(EbtGenBType);
40
41	//
42	// Angle and Trigonometric Functions.
43	//
44	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpRadians, genType, "radians", genType);
45	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpDegrees, genType, "degrees", genType);
46	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpSin, genType, "sin", genType);
47	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpCos, genType, "cos", genType);
48	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpTan, genType, "tan", genType);
49	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpAsin, genType, "asin", genType);
50	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpAcos, genType, "acos", genType);
51	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpAtan, genType, "atan", genType, genType);
52	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpAtan, genType, "atan", genType);
53	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpSinh, genType, "sinh", genType);
54	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpCosh, genType, "cosh", genType);
55	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpTanh, genType, "tanh", genType);
56	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpAsinh, genType, "asinh", genType);
57	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpAcosh, genType, "acosh", genType);
58	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpAtanh, genType, "atanh", genType);
59
60	//
61	// Exponential Functions.
62	//
63	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpPow, genType, "pow", genType, genType);
64	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpExp, genType, "exp", genType);
65	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpLog, genType, "log", genType);
66	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpExp2, genType, "exp2", genType);
67	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpLog2, genType, "log2", genType);
68	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpSqrt, genType, "sqrt", genType);
69	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpInverseSqrt, genType, "inversesqrt", genType);
70
71	//
72	// Common Functions.
73	//
74	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpAbs, genType, "abs", genType);
75	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpAbs, genIType, "abs", genIType);
76	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpSign, genType, "sign", genType);
77	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpSign, genIType, "sign", genIType);
78	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpFloor, genType, "floor", genType);
79	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpTrunc, genType, "trunc", genType);
80	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpRound, genType, "round", genType);
81	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpRoundEven, genType, "roundEven", genType);
82	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpCeil, genType, "ceil", genType);
83	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpFract, genType, "fract", genType);
84	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpMod, genType, "mod", genType, float1);
85	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpMod, genType, "mod", genType, genType);
86	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpMin, genType, "min", genType, float1);
87	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpMin, genType, "min", genType, genType);
88	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpMin, genIType, "min", genIType, genIType);
89	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpMin, genIType, "min", genIType, int1);
90	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpMin, genUType, "min", genUType, genUType);
91	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpMin, genUType, "min", genUType, uint1);
92	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpMax, genType, "max", genType, float1);
93	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpMax, genType, "max", genType, genType);
94	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpMax, genIType, "max", genIType, genIType);
95	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpMax, genIType, "max", genIType, int1);
96	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpMax, genUType, "max", genUType, genUType);
97	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpMax, genUType, "max", genUType, uint1);
98	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpClamp, genType, "clamp", genType, float1, float1);
99	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpClamp, genType, "clamp", genType, genType, genType);
100	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpClamp, genIType, "clamp", genIType, int1, int1);
101	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpClamp, genIType, "clamp", genIType, genIType, genIType);
102	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpClamp, genUType, "clamp", genUType, uint1, uint1);
103	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpClamp, genUType, "clamp", genUType, genUType, genUType);
104	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpMix, genType, "mix", genType, genType, float1);
105	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpMix, genType, "mix", genType, genType, genType);
106	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpMix, genType, "mix", genType, genType, genBType);
107	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpStep, genType, "step", genType, genType);
108	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpStep, genType, "step", float1, genType);
109	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpSmoothStep, genType, "smoothstep", genType, genType, genType);
110	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpSmoothStep, genType, "smoothstep", float1, float1, genType);
111
112	TType *outFloat1 = new TType(EbtFloat, EbpUndefined, EvqOut);
113	TType *outFloat2 = new TType(EbtFloat, EbpUndefined, EvqOut, 2);
114	TType *outFloat3 = new TType(EbtFloat, EbpUndefined, EvqOut, 3);
115	TType *outFloat4 = new TType(EbtFloat, EbpUndefined, EvqOut, 4);
116
117	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpModf, float1, "modf", float1, outFloat1);
118	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpModf, float2, "modf", float2, outFloat2);
119	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpModf, float3, "modf", float3, outFloat3);
120	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpModf, float4, "modf", float4, outFloat4);
121
122	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpIsNan, genBType, "isnan", genType);
123	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpIsInf, genBType, "isinf", genType);
124	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpFloatBitsToInt, genIType, "floatBitsToInt", genType);
125	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpFloatBitsToUint, genUType, "floatBitsToUint", genType);
126	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpIntBitsToFloat, genType, "intBitsToFloat", genIType);
127	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpUintBitsToFloat, genType, "uintBitsToFloat", genUType);
128
129	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpPackSnorm2x16, uint1, "packSnorm2x16", float2);
130	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpPackUnorm2x16, uint1, "packUnorm2x16", float2);
131	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpPackHalf2x16, uint1, "packHalf2x16", float2);
132	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpUnpackSnorm2x16, float2, "unpackSnorm2x16", uint1);
133	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpUnpackUnorm2x16, float2, "unpackUnorm2x16", uint1);
134	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpUnpackHalf2x16, float2, "unpackHalf2x16", uint1);
135
136	//
137	// Geometric Functions.
138	//
139	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpLength, float1, "length", genType);
140	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpDistance, float1, "distance", genType, genType);
141	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpDot, float1, "dot", genType, genType);
142	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpCross, float3, "cross", float3, float3);
143	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpNormalize, genType, "normalize", genType);
144	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpFaceForward, genType, "faceforward", genType, genType, genType);
145	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpReflect, genType, "reflect", genType, genType);
146	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpRefract, genType, "refract", genType, genType, float1);
147
148	TType *mat2 = new TType(EbtFloat, 2, 2);
149	TType *mat2x3 = new TType(EbtFloat, 2, 3);
150	TType *mat2x4 = new TType(EbtFloat, 2, 4);
151	TType *mat3x2 = new TType(EbtFloat, 3, 2);
152	TType *mat3 = new TType(EbtFloat, 3, 3);
153	TType *mat3x4 = new TType(EbtFloat, 3, 4);
154	TType *mat4x2 = new TType(EbtFloat, 4, 2);
155	TType *mat4x3 = new TType(EbtFloat, 4, 3);
156	TType *mat4 = new TType(EbtFloat, 4, 4);
157
158	//
159	// Matrix Functions.
160	//
161	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpMul, mat2, "matrixCompMult", mat2, mat2);
162	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpMul, mat3, "matrixCompMult", mat3, mat3);
163	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpMul, mat4, "matrixCompMult", mat4, mat4);
164	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpMul, mat2x3, "matrixCompMult", mat2x3, mat2x3);
165	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpMul, mat3x2, "matrixCompMult", mat3x2, mat3x2);
166	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpMul, mat2x4, "matrixCompMult", mat2x4, mat2x4);
167	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpMul, mat4x2, "matrixCompMult", mat4x2, mat4x2);
168	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpMul, mat3x4, "matrixCompMult", mat3x4, mat3x4);
169	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpMul, mat4x3, "matrixCompMult", mat4x3, mat4x3);
170
171	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpOuterProduct, mat2, "outerProduct", float2, float2);
172	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpOuterProduct, mat3, "outerProduct", float3, float3);
173	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpOuterProduct, mat4, "outerProduct", float4, float4);
174	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpOuterProduct, mat2x3, "outerProduct", float3, float2);
175	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpOuterProduct, mat3x2, "outerProduct", float2, float3);
176	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpOuterProduct, mat2x4, "outerProduct", float4, float2);
177	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpOuterProduct, mat4x2, "outerProduct", float2, float4);
178	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpOuterProduct, mat3x4, "outerProduct", float4, float3);
179	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpOuterProduct, mat4x3, "outerProduct", float3, float4);
180
181	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpTranspose, mat2, "transpose", mat2);
182	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpTranspose, mat3, "transpose", mat3);
183	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpTranspose, mat4, "transpose", mat4);
184	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpTranspose, mat2x3, "transpose", mat3x2);
185	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpTranspose, mat3x2, "transpose", mat2x3);
186	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpTranspose, mat2x4, "transpose", mat4x2);
187	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpTranspose, mat4x2, "transpose", mat2x4);
188	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpTranspose, mat3x4, "transpose", mat4x3);
189	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpTranspose, mat4x3, "transpose", mat3x4);
190
191	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpDeterminant, float1, "determinant", mat2);
192	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpDeterminant, float1, "determinant", mat3);
193	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpDeterminant, float1, "determinant", mat4);
194
195	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpInverse, mat2, "inverse", mat2);
196	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpInverse, mat3, "inverse", mat3);
197	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpInverse, mat4, "inverse", mat4);
198
199
200	TType *bool1 = new TType(EbtBool);
201	TType *vec = new TType(EbtVec);
202	TType *ivec = new TType(EbtIVec);
203	TType *uvec = new TType(EbtUVec);
204	TType *bvec = new TType(EbtBVec);
205
206	//
207	// Vector relational functions.
208	//
209	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpLessThan, bvec, "lessThan", vec, vec);
210	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpLessThan, bvec, "lessThan", ivec, ivec);
211	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpLessThan, bvec, "lessThan", uvec, uvec);
212	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpLessThanEqual, bvec, "lessThanEqual", vec, vec);
213	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpLessThanEqual, bvec, "lessThanEqual", ivec, ivec);
214	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpLessThanEqual, bvec, "lessThanEqual", uvec, uvec);
215	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpGreaterThan, bvec, "greaterThan", vec, vec);
216	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpGreaterThan, bvec, "greaterThan", ivec, ivec);
217	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpGreaterThan, bvec, "greaterThan", uvec, uvec);
218	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpGreaterThanEqual, bvec, "greaterThanEqual", vec, vec);
219	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpGreaterThanEqual, bvec, "greaterThanEqual", ivec, ivec);
220	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpGreaterThanEqual, bvec, "greaterThanEqual", uvec, uvec);
221	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpVectorEqual, bvec, "equal", vec, vec);
222	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpVectorEqual, bvec, "equal", ivec, ivec);
223	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpVectorEqual, bvec, "equal", uvec, uvec);
224	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpVectorEqual, bvec, "equal", bvec, bvec);
225	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpVectorNotEqual, bvec, "notEqual", vec, vec);
226	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpVectorNotEqual, bvec, "notEqual", ivec, ivec);
227	symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpVectorNotEqual, bvec, "notEqual", uvec, uvec);
228	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpVectorNotEqual, bvec, "notEqual", bvec, bvec);
229	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpAny, bool1, "any", bvec);
230	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpAll, bool1, "all", bvec);
231	symbolTable.insertBuiltIn(COMMON_BUILTINS, EOpVectorLogicalNot, bvec, "not", bvec);
232
233	TType *sampler2D = new TType(EbtSampler2D);
234	TType *samplerCube = new TType(EbtSamplerCube);
235	TType *sampler3D = new TType(EbtSampler3D);
236
237	//
238	// Texture Functions for GLSL ES 1.0
239	//
240	symbolTable.insertBuiltIn(ESSL1_BUILTINS, float4, "texture2D", sampler2D, float2);
241	symbolTable.insertBuiltIn(ESSL1_BUILTINS, float4, "texture2DProj", sampler2D, float3);
242	symbolTable.insertBuiltIn(ESSL1_BUILTINS, float4, "texture2DProj", sampler2D, float4);
243	symbolTable.insertBuiltIn(ESSL1_BUILTINS, float4, "textureCube", samplerCube, float3);
244	symbolTable.insertBuiltIn(ESSL1_BUILTINS, float4, "texture3D", sampler3D, float3);
245
246	if(resources.ARB_texture_rectangle)
247	{
248		TType *sampler2DRect = new TType(EbtSampler2DRect);
249
250		symbolTable.insertBuiltIn(ESSL1_BUILTINS, float4, "texture2DRect", sampler2DRect, float2);
251		symbolTable.insertBuiltIn(ESSL1_BUILTINS, float4, "texture2DRectProj", sampler2DRect, float3);
252		symbolTable.insertBuiltIn(ESSL1_BUILTINS, float4, "texture2DRectProj", sampler2DRect, float4);
253		symbolTable.insertBuiltIn(ESSL3_BUILTINS, float4, "texture", sampler2DRect, float2);
254		symbolTable.insertBuiltIn(ESSL3_BUILTINS, float4, "textureProj", sampler2DRect, float3);
255		symbolTable.insertBuiltIn(ESSL3_BUILTINS, float4, "textureProj", sampler2DRect, float4);
256	}
257
258	if(resources.OES_EGL_image_external)
259	{
260		TType *samplerExternalOES = new TType(EbtSamplerExternalOES);
261
262		symbolTable.insertBuiltIn(ESSL1_BUILTINS, float4, "texture2D", samplerExternalOES, float2);
263		symbolTable.insertBuiltIn(ESSL1_BUILTINS, float4, "texture2DProj", samplerExternalOES, float3);
264		symbolTable.insertBuiltIn(ESSL1_BUILTINS, float4, "texture2DProj", samplerExternalOES, float4);
265		symbolTable.insertBuiltIn(ESSL1_BUILTINS, float4, "texture3D", samplerExternalOES, float3);
266	}
267
268	if(type == GL_FRAGMENT_SHADER)
269	{
270		symbolTable.insertBuiltIn(ESSL1_BUILTINS, float4, "texture2D", sampler2D, float2, float1);
271		symbolTable.insertBuiltIn(ESSL1_BUILTINS, float4, "texture2DProj", sampler2D, float3, float1);
272		symbolTable.insertBuiltIn(ESSL1_BUILTINS, float4, "texture2DProj", sampler2D, float4, float1);
273		symbolTable.insertBuiltIn(ESSL1_BUILTINS, float4, "textureCube", samplerCube, float3, float1);
274
275		if(resources.OES_standard_derivatives)
276		{
277			symbolTable.insertBuiltIn(ESSL1_BUILTINS, EOpDFdx, "GL_OES_standard_derivatives", genType, "dFdx", genType);
278			symbolTable.insertBuiltIn(ESSL1_BUILTINS, EOpDFdy, "GL_OES_standard_derivatives", genType, "dFdy", genType);
279			symbolTable.insertBuiltIn(ESSL1_BUILTINS, EOpFwidth,"GL_OES_standard_derivatives", genType, "fwidth", genType);
280		}
281	}
282
283	if(type == GL_VERTEX_SHADER)
284	{
285		symbolTable.insertBuiltIn(ESSL1_BUILTINS, float4, "texture2DLod", sampler2D, float2, float1);
286		symbolTable.insertBuiltIn(ESSL1_BUILTINS, float4, "texture2DProjLod", sampler2D, float3, float1);
287		symbolTable.insertBuiltIn(ESSL1_BUILTINS, float4, "texture2DProjLod", sampler2D, float4, float1);
288		symbolTable.insertBuiltIn(ESSL1_BUILTINS, float4, "textureCubeLod", samplerCube, float3, float1);
289		symbolTable.insertBuiltIn(ESSL1_BUILTINS, float4, "texture3DLod", sampler3D, float3, float1);
290	}
291
292	TType *gvec4 = new TType(EbtGVec4);
293
294	TType *gsampler2D = new TType(EbtGSampler2D);
295	TType *gsamplerCube = new TType(EbtGSamplerCube);
296	TType *gsampler3D = new TType(EbtGSampler3D);
297	TType *gsampler2DArray = new TType(EbtGSampler2DArray);
298
299	//
300	// Texture Functions for GLSL ES 3.0
301	//
302	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "texture", gsampler2D, float2);
303	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "texture", gsampler3D, float3);
304	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "texture", gsamplerCube, float3);
305	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "texture", gsampler2DArray, float3);
306	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProj", gsampler2D, float3);
307	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProj", gsampler2D, float4);
308	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProj", gsampler3D, float4);
309	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureLod", gsampler2D, float2, float1);
310	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureLod", gsampler3D, float3, float1);
311	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureLod", gsamplerCube, float3, float1);
312	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureLod", gsampler2DArray, float3, float1);
313
314	if(type == GL_FRAGMENT_SHADER)
315	{
316		symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "texture", gsampler2D, float2, float1);
317		symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "texture", gsampler3D, float3, float1);
318		symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "texture", gsamplerCube, float3, float1);
319		symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "texture", gsampler2DArray, float3, float1);
320		symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProj", gsampler2D, float3, float1);
321		symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProj", gsampler2D, float4, float1);
322		symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProj", gsampler3D, float4, float1);
323	}
324
325	TType *sampler2DShadow = new TType(EbtSampler2DShadow);
326	TType *samplerCubeShadow = new TType(EbtSamplerCubeShadow);
327	TType *sampler2DArrayShadow = new TType(EbtSampler2DArrayShadow);
328
329	symbolTable.insertBuiltIn(ESSL3_BUILTINS, float1, "texture", sampler2DShadow, float3);
330	symbolTable.insertBuiltIn(ESSL3_BUILTINS, float1, "texture", samplerCubeShadow, float4);
331	symbolTable.insertBuiltIn(ESSL3_BUILTINS, float1, "texture", sampler2DArrayShadow, float4);
332	symbolTable.insertBuiltIn(ESSL3_BUILTINS, float1, "textureProj", sampler2DShadow, float4);
333	symbolTable.insertBuiltIn(ESSL3_BUILTINS, float1, "textureLod", sampler2DShadow, float3, float1);
334
335	if(type == GL_FRAGMENT_SHADER)
336	{
337		symbolTable.insertBuiltIn(ESSL3_BUILTINS, float1, "texture", sampler2DShadow, float3, float1);
338		symbolTable.insertBuiltIn(ESSL3_BUILTINS, float1, "texture", samplerCubeShadow, float4, float1);
339		symbolTable.insertBuiltIn(ESSL3_BUILTINS, float1, "textureProj", sampler2DShadow, float4, float1);
340	}
341
342	symbolTable.insertBuiltIn(ESSL3_BUILTINS, int2, "textureSize", gsampler2D, int1);
343	symbolTable.insertBuiltIn(ESSL3_BUILTINS, int3, "textureSize", gsampler3D, int1);
344	symbolTable.insertBuiltIn(ESSL3_BUILTINS, int2, "textureSize", gsamplerCube, int1);
345	symbolTable.insertBuiltIn(ESSL3_BUILTINS, int3, "textureSize", gsampler2DArray, int1);
346	symbolTable.insertBuiltIn(ESSL3_BUILTINS, int2, "textureSize", sampler2DShadow, int1);
347	symbolTable.insertBuiltIn(ESSL3_BUILTINS, int2, "textureSize", samplerCubeShadow, int1);
348	symbolTable.insertBuiltIn(ESSL3_BUILTINS, int3, "textureSize", sampler2DArrayShadow, int1);
349
350	if(type == GL_FRAGMENT_SHADER)
351	{
352		symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpDFdx, genType, "dFdx", genType);
353		symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpDFdy, genType, "dFdy", genType);
354		symbolTable.insertBuiltIn(ESSL3_BUILTINS, EOpFwidth, genType, "fwidth", genType);
355	}
356
357	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureOffset", gsampler2D, float2, int2);
358	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureOffset", gsampler3D, float3, int3);
359	symbolTable.insertBuiltIn(ESSL3_BUILTINS, float1, "textureOffset", sampler2DShadow, float3, int2);
360	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureOffset", gsampler2DArray, float3, int2);
361
362	if(type == GL_FRAGMENT_SHADER)
363	{
364		symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureOffset", gsampler2D, float2, int2, float1);
365		symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureOffset", gsampler3D, float3, int3, float1);
366		symbolTable.insertBuiltIn(ESSL3_BUILTINS, float1, "textureOffset", sampler2DShadow, float3, int2, float1);
367		symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureOffset", gsampler2DArray, float3, int2, float1);
368	}
369
370	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProjOffset", gsampler2D, float3, int2);
371	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProjOffset", gsampler2D, float4, int2);
372	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProjOffset", gsampler3D, float4, int3);
373	symbolTable.insertBuiltIn(ESSL3_BUILTINS, float1, "textureProjOffset", sampler2DShadow, float4, int2);
374
375	if(type == GL_FRAGMENT_SHADER)
376	{
377		symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProjOffset", gsampler2D, float3, int2, float1);
378		symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProjOffset", gsampler2D, float4, int2, float1);
379		symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProjOffset", gsampler3D, float4, int3, float1);
380		symbolTable.insertBuiltIn(ESSL3_BUILTINS, float1, "textureProjOffset", sampler2DShadow, float4, int2, float1);
381	}
382
383	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureLodOffset", gsampler2D, float2, float1, int2);
384	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureLodOffset", gsampler3D, float3, float1, int3);
385	symbolTable.insertBuiltIn(ESSL3_BUILTINS, float1, "textureLodOffset", sampler2DShadow, float3, float1, int2);
386	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureLodOffset", gsampler2DArray, float3, float1, int2);
387
388	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProjLod", gsampler2D, float3, float1);
389	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProjLod", gsampler2D, float4, float1);
390	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProjLod", gsampler3D, float4, float1);
391	symbolTable.insertBuiltIn(ESSL3_BUILTINS, float1, "textureProjLod", sampler2DShadow, float4, float1);
392
393	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProjLodOffset", gsampler2D, float3, float1, int2);
394	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProjLodOffset", gsampler2D, float4, float1, int2);
395	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProjLodOffset", gsampler3D, float4, float1, int3);
396	symbolTable.insertBuiltIn(ESSL3_BUILTINS, float1, "textureProjLodOffset", sampler2DShadow, float4, float1, int2);
397
398	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "texelFetch", gsampler2D, int2, int1);
399	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "texelFetch", gsampler3D, int3, int1);
400	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "texelFetch", gsampler2DArray, int3, int1);
401
402	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "texelFetchOffset", gsampler2D, int2, int1, int2);
403	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "texelFetchOffset", gsampler3D, int3, int1, int3);
404	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "texelFetchOffset", gsampler2DArray, int3, int1, int2);
405
406	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureGrad", gsampler2D, float2, float2, float2);
407	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureGrad", gsampler3D, float3, float3, float3);
408	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureGrad", gsamplerCube, float3, float3, float3);
409	symbolTable.insertBuiltIn(ESSL3_BUILTINS, float1, "textureGrad", sampler2DShadow, float3, float2, float2);
410	symbolTable.insertBuiltIn(ESSL3_BUILTINS, float1, "textureGrad", samplerCubeShadow, float4, float3, float3);
411	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureGrad", gsampler2DArray, float3, float2, float2);
412	symbolTable.insertBuiltIn(ESSL3_BUILTINS, float1, "textureGrad", sampler2DArrayShadow, float4, float2, float2);
413
414	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureGradOffset", gsampler2D, float2, float2, float2, int2);
415	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureGradOffset", gsampler3D, float3, float3, float3, int3);
416	symbolTable.insertBuiltIn(ESSL3_BUILTINS, float1, "textureGradOffset", sampler2DShadow, float3, float2, float2, int2);
417	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureGradOffset", gsampler2DArray, float3, float2, float2, int2);
418	symbolTable.insertBuiltIn(ESSL3_BUILTINS, float1, "textureGradOffset", sampler2DArrayShadow, float4, float2, float2, int2);
419
420	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProjGrad", gsampler2D, float3, float2, float2);
421	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProjGrad", gsampler2D, float4, float2, float2);
422	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProjGrad", gsampler3D, float4, float3, float3);
423	symbolTable.insertBuiltIn(ESSL3_BUILTINS, float1, "textureProjGrad", sampler2DShadow, float4, float2, float2);
424
425	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProjGradOffset", gsampler2D, float3, float2, float2, int2);
426	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProjGradOffset", gsampler2D, float4, float2, float2, int2);
427	symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProjGradOffset", gsampler3D, float4, float3, float3, int3);
428	symbolTable.insertBuiltIn(ESSL3_BUILTINS, float1, "textureProjGradOffset", sampler2DShadow, float4, float2, float2, int2);
429
430	//
431	// Depth range in window coordinates
432	//
433	TFieldList *fields = NewPoolTFieldList();
434	TSourceLoc zeroSourceLoc = { 0, 0, 0, 0 };
435	TField *near = new TField(new TType(EbtFloat, EbpHigh, EvqGlobal, 1), NewPoolTString("near"), zeroSourceLoc);
436	TField *far = new TField(new TType(EbtFloat, EbpHigh, EvqGlobal, 1), NewPoolTString("far"), zeroSourceLoc);
437	TField *diff = new TField(new TType(EbtFloat, EbpHigh, EvqGlobal, 1), NewPoolTString("diff"), zeroSourceLoc);
438	fields->push_back(near);
439	fields->push_back(far);
440	fields->push_back(diff);
441	TStructure *depthRangeStruct = new TStructure(NewPoolTString("gl_DepthRangeParameters"), fields);
442	TVariable *depthRangeParameters = new TVariable(&depthRangeStruct->name(), depthRangeStruct, true);
443	symbolTable.insert(COMMON_BUILTINS, depthRangeParameters);
444	TVariable *depthRange = new TVariable(NewPoolTString("gl_DepthRange"), TType(depthRangeStruct));
445	depthRange->setQualifier(EvqUniform);
446	symbolTable.insert(COMMON_BUILTINS, depthRange);
447
448	//
449	// Implementation dependent built-in constants.
450	//
451	symbolTable.insertConstInt(COMMON_BUILTINS, "gl_MaxVertexAttribs", resources.MaxVertexAttribs);
452	symbolTable.insertConstInt(COMMON_BUILTINS, "gl_MaxVertexUniformVectors", resources.MaxVertexUniformVectors);
453	symbolTable.insertConstInt(COMMON_BUILTINS, "gl_MaxVertexTextureImageUnits", resources.MaxVertexTextureImageUnits);
454	symbolTable.insertConstInt(COMMON_BUILTINS, "gl_MaxCombinedTextureImageUnits", resources.MaxCombinedTextureImageUnits);
455	symbolTable.insertConstInt(COMMON_BUILTINS, "gl_MaxTextureImageUnits", resources.MaxTextureImageUnits);
456	symbolTable.insertConstInt(COMMON_BUILTINS, "gl_MaxFragmentUniformVectors", resources.MaxFragmentUniformVectors);
457	symbolTable.insertConstInt(COMMON_BUILTINS, "gl_MaxDrawBuffers", resources.MaxDrawBuffers);
458	symbolTable.insertConstInt(ESSL1_BUILTINS, "gl_MaxVaryingVectors", resources.MaxVaryingVectors);
459	symbolTable.insertConstInt(ESSL3_BUILTINS, "gl_MaxVertexOutputVectors", resources.MaxVertexOutputVectors);
460	symbolTable.insertConstInt(ESSL3_BUILTINS, "gl_MaxFragmentInputVectors", resources.MaxFragmentInputVectors);
461	symbolTable.insertConstInt(ESSL3_BUILTINS, "gl_MinProgramTexelOffset", resources.MinProgramTexelOffset);
462	symbolTable.insertConstInt(ESSL3_BUILTINS, "gl_MaxProgramTexelOffset", resources.MaxProgramTexelOffset);
463}
464
465void IdentifyBuiltIns(GLenum shaderType,
466                      const ShBuiltInResources &resources,
467                      TSymbolTable &symbolTable)
468{
469	//
470	// First, insert some special built-in variables that are not in
471	// the built-in header files.
472	//
473	switch(shaderType)
474	{
475	case GL_FRAGMENT_SHADER:
476		symbolTable.insert(COMMON_BUILTINS, new TVariable(NewPoolTString("gl_FragCoord"), TType(EbtFloat, EbpMedium, EvqFragCoord,   4)));
477		symbolTable.insert(COMMON_BUILTINS, new TVariable(NewPoolTString("gl_FrontFacing"), TType(EbtBool,  EbpUndefined, EvqFrontFacing, 1)));
478		symbolTable.insert(COMMON_BUILTINS, new TVariable(NewPoolTString("gl_PointCoord"), TType(EbtFloat, EbpMedium, EvqPointCoord,  2)));
479		symbolTable.insert(ESSL1_BUILTINS, new TVariable(NewPoolTString("gl_FragColor"), TType(EbtFloat, EbpMedium, EvqFragColor,   4)));
480		symbolTable.insert(ESSL1_BUILTINS, new TVariable(NewPoolTString("gl_FragData[gl_MaxDrawBuffers]"), TType(EbtFloat, EbpMedium, EvqFragData,    4)));
481		symbolTable.insert(ESSL3_BUILTINS, new TVariable(NewPoolTString("gl_FragDepth"), TType(EbtFloat, EbpHigh, EvqFragDepth, 1)));
482		break;
483	case GL_VERTEX_SHADER:
484		symbolTable.insert(COMMON_BUILTINS, new TVariable(NewPoolTString("gl_Position"), TType(EbtFloat, EbpHigh, EvqPosition,    4)));
485		symbolTable.insert(COMMON_BUILTINS, new TVariable(NewPoolTString("gl_PointSize"), TType(EbtFloat, EbpMedium, EvqPointSize,   1)));
486		symbolTable.insert(ESSL3_BUILTINS, new TVariable(NewPoolTString("gl_InstanceID"), TType(EbtInt, EbpHigh, EvqInstanceID, 1)));
487		symbolTable.insert(ESSL3_BUILTINS, new TVariable(NewPoolTString("gl_VertexID"), TType(EbtInt, EbpHigh, EvqVertexID, 1)));
488		break;
489	default: assert(false && "Language not supported");
490	}
491
492	// Finally add resource-specific variables.
493	switch(shaderType)
494	{
495	case GL_FRAGMENT_SHADER:
496		{
497			// Set up gl_FragData.  The array size.
498			TType fragData(EbtFloat, EbpMedium, EvqFragData, 4, 1, true);
499			fragData.setArraySize(resources.MaxDrawBuffers);
500			symbolTable.insert(ESSL1_BUILTINS, new TVariable(NewPoolTString("gl_FragData"), fragData));
501		}
502		break;
503	default: break;
504	}
505}
506
507void InitExtensionBehavior(const ShBuiltInResources& resources,
508                           TExtensionBehavior& extBehavior)
509{
510	if(resources.OES_standard_derivatives)
511		extBehavior["GL_OES_standard_derivatives"] = EBhUndefined;
512	if(resources.OES_fragment_precision_high)
513		extBehavior["GL_FRAGMENT_PRECISION_HIGH"] = EBhUndefined;
514	if(resources.OES_EGL_image_external)
515		extBehavior["GL_OES_EGL_image_external"] = EBhUndefined;
516	if(resources.EXT_draw_buffers)
517		extBehavior["GL_EXT_draw_buffers"] = EBhUndefined;
518	if(resources.ARB_texture_rectangle)
519		extBehavior["GL_ARB_texture_rectangle"] = EBhUndefined;
520}
521