1 #include <msp/core/algorithm.h>
2 #include <msp/core/maputils.h>
3 #include <msp/core/raii.h>
13 const SpirVGenerator::BuiltinFunctionInfo SpirVGenerator::builtin_functions[] =
15 { "radians", "f", "GLSL.std.450", GLSL450_RADIANS, { 1 }, 0, 0 },
16 { "degrees", "f", "GLSL.std.450", GLSL450_DEGREES, { 1 }, 0, 0 },
17 { "sin", "f", "GLSL.std.450", GLSL450_SIN, { 1 }, 0, 0 },
18 { "cos", "f", "GLSL.std.450", GLSL450_COS, { 1 }, 0, 0 },
19 { "tan", "f", "GLSL.std.450", GLSL450_TAN, { 1 }, 0, 0 },
20 { "asin", "f", "GLSL.std.450", GLSL450_ASIN, { 1 }, 0, 0 },
21 { "acos", "f", "GLSL.std.450", GLSL450_ACOS, { 1 }, 0, 0 },
22 { "atan", "f", "GLSL.std.450", GLSL450_ATAN, { 1 }, 0, 0 },
23 { "atan", "ff", "GLSL.std.450", GLSL450_ATAN2, { 1, 2 }, 0, 0 },
24 { "sinh", "f", "GLSL.std.450", GLSL450_SINH, { 1 }, 0, 0 },
25 { "cosh", "f", "GLSL.std.450", GLSL450_COSH, { 1 }, 0, 0 },
26 { "tanh", "f", "GLSL.std.450", GLSL450_TANH, { 1 }, 0, 0 },
27 { "asinh", "f", "GLSL.std.450", GLSL450_ASINH, { 1 }, 0, 0 },
28 { "acosh", "f", "GLSL.std.450", GLSL450_ACOSH, { 1 }, 0, 0 },
29 { "atanh", "f", "GLSL.std.450", GLSL450_ATANH, { 1 }, 0, 0 },
30 { "pow", "ff", "GLSL.std.450", GLSL450_POW, { 1, 2 }, 0, 0 },
31 { "exp", "f", "GLSL.std.450", GLSL450_EXP, { 1 }, 0, 0 },
32 { "log", "f", "GLSL.std.450", GLSL450_LOG, { 1 }, 0, 0 },
33 { "exp2", "f", "GLSL.std.450", GLSL450_EXP2, { 1 }, 0, 0 },
34 { "log2", "f", "GLSL.std.450", GLSL450_LOG2, { 1 }, 0, 0 },
35 { "sqrt", "f", "GLSL.std.450", GLSL450_SQRT, { 1 }, 0, 0 },
36 { "inversesqrt", "f", "GLSL.std.450", GLSL450_INVERSE_SQRT, { 1 }, 0, 0 },
37 { "abs", "f", "GLSL.std.450", GLSL450_F_ABS, { 1 }, 0, 0 },
38 { "abs", "i", "GLSL.std.450", GLSL450_S_ABS, { 1 }, 0, 0 },
39 { "sign", "f", "GLSL.std.450", GLSL450_F_SIGN, { 1 }, 0, 0 },
40 { "sign", "i", "GLSL.std.450", GLSL450_S_SIGN, { 1 }, 0, 0 },
41 { "floor", "f", "GLSL.std.450", GLSL450_FLOOR, { 1 }, 0, 0 },
42 { "trunc", "f", "GLSL.std.450", GLSL450_TRUNC, { 1 }, 0, 0 },
43 { "round", "f", "GLSL.std.450", GLSL450_ROUND, { 1 }, 0, 0 },
44 { "roundEven", "f", "GLSL.std.450", GLSL450_ROUND_EVEN, { 1 }, 0, 0 },
45 { "ceil", "f", "GLSL.std.450", GLSL450_CEIL, { 1 }, 0, 0 },
46 { "fract", "f", "GLSL.std.450", GLSL450_FRACT, { 1 }, 0, 0 },
47 { "mod", "f", "", OP_F_MOD, { 1, 2 }, 0, 0 },
48 { "min", "ff", "GLSL.std.450", GLSL450_F_MIN, { 1, 2 }, 0, 0 },
49 { "min", "ii", "GLSL.std.450", GLSL450_S_MIN, { 1, 2 }, 0, 0 },
50 { "min", "uu", "GLSL.std.450", GLSL450_U_MIN, { 1, 2 }, 0, 0 },
51 { "max", "ff", "GLSL.std.450", GLSL450_F_MAX, { 1, 2 }, 0, 0 },
52 { "max", "ii", "GLSL.std.450", GLSL450_S_MAX, { 1, 2 }, 0, 0 },
53 { "max", "uu", "GLSL.std.450", GLSL450_U_MAX, { 1, 2 }, 0, 0 },
54 { "clamp", "fff", "GLSL.std.450", GLSL450_F_CLAMP, { 1, 2, 3 }, 0, 0 },
55 { "clamp", "iii", "GLSL.std.450", GLSL450_S_CLAMP, { 1, 2, 3 }, 0, 0 },
56 { "clamp", "uuu", "GLSL.std.450", GLSL450_U_CLAMP, { 1, 2, 3 }, 0, 0 },
57 { "mix", "fff", "GLSL.std.450", GLSL450_F_MIX, { 1, 2, 3 }, 0, 0 },
58 { "mix", "ffb", "", OP_SELECT, { 3, 2, 1 }, 0, 0 },
59 { "mix", "iib", "", OP_SELECT, { 3, 2, 1 }, 0, 0 },
60 { "mix", "uub", "", OP_SELECT, { 3, 2, 1 }, 0, 0 },
61 { "step", "ff", "GLSL.std.450", GLSL450_F_STEP, { 1, 2 }, 0, 0 },
62 { "smoothstep", "fff", "GLSL.std.450", GLSL450_F_SMOOTH_STEP, { 1, 2, 3 }, 0, 0 },
63 { "isnan", "f", "", OP_IS_NAN, { 1 }, 0, 0 },
64 { "isinf", "f", "", OP_IS_INF, { 1 }, 0, 0 },
65 { "fma", "fff", "GLSL.std.450", GLSL450_F_FMA, { 1, 2, 3 }, 0, 0 },
66 { "length", "f", "GLSL.std.450", GLSL450_LENGTH, { 1 }, 0, 0 },
67 { "distance", "ff", "GLSL.std.450", GLSL450_DISTANCE, { 1, 2 }, 0, 0 },
68 { "dot", "ff", "", OP_DOT, { 1, 2 }, 0, 0 },
69 { "cross", "ff", "GLSL.std.450", GLSL450_CROSS, { 1, 2 }, 0, 0 },
70 { "normalize", "f", "GLSL.std.450", GLSL450_NORMALIZE, { 1 }, 0, 0 },
71 { "faceforward", "fff", "GLSL.std.450", GLSL450_FACE_FORWARD, { 1, 2, 3 }, 0, 0 },
72 { "reflect", "ff", "GLSL.std.450", GLSL450_REFLECT, { 1, 2 }, 0, 0 },
73 { "refract", "fff", "GLSL.std.450", GLSL450_REFRACT, { 1, 2, 3 }, 0, 0 },
74 { "matrixCompMult", "ff", "", 0, { 0 }, 0, &SpirVGenerator::visit_builtin_matrix_comp_mult },
75 { "outerProduct", "ff", "", OP_OUTER_PRODUCT, { 1, 2 }, 0, 0 },
76 { "transpose", "f", "", OP_TRANSPOSE, { 1 }, 0, 0 },
77 { "determinant", "f", "GLSL.std.450", GLSL450_DETERMINANT, { 1 }, 0, 0 },
78 { "inverse", "f", "GLSL.std.450", GLSL450_MATRIX_INVERSE, { 1 }, 0, 0 },
79 { "lessThan", "ff", "", OP_F_ORD_LESS_THAN, { 1, 2 }, 0, 0 },
80 { "lessThan", "ii", "", OP_S_LESS_THAN, { 1, 2 }, 0, 0 },
81 { "lessThan", "uu", "", OP_U_LESS_THAN, { 1, 2 }, 0, 0 },
82 { "lessThanEqual", "ff", "", OP_F_ORD_LESS_THAN_EQUAL, { 1, 2 }, 0, 0 },
83 { "lessThanEqual", "ii", "", OP_S_LESS_THAN_EQUAL, { 1, 2 }, 0, 0 },
84 { "lessThanEqual", "uu", "", OP_U_LESS_THAN_EQUAL, { 1, 2 }, 0, 0 },
85 { "greaterThan", "ff", "", OP_F_ORD_GREATER_THAN, { 1, 2 }, 0, 0 },
86 { "greaterThan", "ii", "", OP_S_GREATER_THAN, { 1, 2 }, 0, 0 },
87 { "greaterThan", "uu", "", OP_U_GREATER_THAN, { 1, 2 }, 0, 0 },
88 { "greaterThanEqual", "ff", "", OP_F_ORD_GREATER_THAN_EQUAL, { 1, 2 }, 0, 0 },
89 { "greaterThanEqual", "ii", "", OP_S_GREATER_THAN_EQUAL, { 1, 2 }, 0, 0 },
90 { "greaterThanEqual", "uu", "", OP_U_GREATER_THAN_EQUAL, { 1, 2 }, 0, 0 },
91 { "equal", "ff", "", OP_F_ORD_EQUAL, { 1, 2 }, 0, 0 },
92 { "equal", "ii", "", OP_I_EQUAL, { 1, 2 }, 0, 0 },
93 { "equal", "uu", "", OP_I_EQUAL, { 1, 2 }, 0, 0 },
94 { "notEqual", "ff", "", OP_F_ORD_NOT_EQUAL, { 1, 2 }, 0, 0 },
95 { "notEqual", "ii", "", OP_I_NOT_EQUAL, { 1, 2 }, 0, 0 },
96 { "notEqual", "uu", "", OP_I_NOT_EQUAL, { 1, 2 }, 0, 0 },
97 { "any", "b", "", OP_ANY, { 1 }, 0, 0 },
98 { "all", "b", "", OP_ALL, { 1 }, 0, 0 },
99 { "not", "b", "", OP_LOGICAL_NOT, { 1 }, 0, 0 },
100 { "bitfieldExtract", "iii", "", OP_BIT_FIELD_S_EXTRACT, { 1, 2, 3 }, 0, 0 },
101 { "bitfieldExtract", "uii", "", OP_BIT_FIELD_U_EXTRACT, { 1, 2, 3 }, 0, 0 },
102 { "bitfieldInsert", "iiii", "", OP_BIT_FIELD_INSERT, { 1, 2, 3, 4 }, 0, 0 },
103 { "bitfieldInsert", "uuii", "", OP_BIT_FIELD_INSERT, { 1, 2, 3, 4 }, 0, 0 },
104 { "bitfieldReverse", "i", "", OP_BIT_REVERSE, { 1 }, 0, 0 },
105 { "bitfieldReverse", "u", "", OP_BIT_REVERSE, { 1 }, 0, 0 },
106 { "bitCount", "i", "", OP_BIT_COUNT, { 1 }, 0, 0 },
107 { "findLSB", "i", "GLSL.std.450", GLSL450_FIND_I_LSB, { 1 }, 0, 0 },
108 { "findLSB", "u", "GLSL.std.450", GLSL450_FIND_I_LSB, { 1 }, 0, 0 },
109 { "findMSB", "i", "GLSL.std.450", GLSL450_FIND_S_MSB, { 1 }, 0, 0 },
110 { "findMSB", "u", "GLSL.std.450", GLSL450_FIND_U_MSB, { 1 }, 0, 0 },
111 { "textureSize", "", "", 0, { }, CAP_IMAGE_QUERY, &SpirVGenerator::visit_builtin_texture_query },
112 { "textureQueryLod", "", "", 0, { }, CAP_IMAGE_QUERY, &SpirVGenerator::visit_builtin_texture_query },
113 { "textureQueryLevels", "", "", 0, { }, CAP_IMAGE_QUERY, &SpirVGenerator::visit_builtin_texture_query },
114 { "textureSamples", "", "", 0, { }, CAP_IMAGE_QUERY, &SpirVGenerator::visit_builtin_texture_query },
115 { "texture", "", "", 0, { }, 0, &SpirVGenerator::visit_builtin_texture },
116 { "textureLod", "", "", 0, { }, 0, &SpirVGenerator::visit_builtin_texture },
117 { "texelFetch", "", "", 0, { }, 0, &SpirVGenerator::visit_builtin_texel_fetch },
118 { "EmitVertex", "", "", OP_EMIT_VERTEX, { }, 0, 0 },
119 { "EndPrimitive", "", "", OP_END_PRIMITIVE, { }, 0, 0 },
120 { "dFdx", "f", "", OP_DP_DX, { 1 }, 0, 0 },
121 { "dFdy", "f", "", OP_DP_DY, { 1 }, 0, 0 },
122 { "dFdxFine", "f", "", OP_DP_DX_FINE, { 1 }, CAP_DERIVATIVE_CONTROL, 0 },
123 { "dFdyFine", "f", "", OP_DP_DY_FINE, { 1 }, CAP_DERIVATIVE_CONTROL, 0 },
124 { "dFdxCoarse", "f", "", OP_DP_DX_COARSE, { 1 }, CAP_DERIVATIVE_CONTROL, 0 },
125 { "dFdyCoarse", "f", "", OP_DP_DY_COARSE, { 1 }, CAP_DERIVATIVE_CONTROL, 0 },
126 { "fwidth", "f", "", OP_FWIDTH, { 1 }, 0, 0 },
127 { "fwidthFine", "f", "", OP_FWIDTH_FINE, { 1 }, CAP_DERIVATIVE_CONTROL, 0 },
128 { "fwidthCoarse", "f", "", OP_FWIDTH_COARSE, { 1 }, CAP_DERIVATIVE_CONTROL, 0 },
129 { "interpolateAtCentroid", "", "", 0, { }, CAP_INTERPOLATION_FUNCTION, &SpirVGenerator::visit_builtin_interpolate },
130 { "interpolateAtSample", "", "", 0, { }, CAP_INTERPOLATION_FUNCTION, &SpirVGenerator::visit_builtin_interpolate },
131 { "interpolateAtOffset", "", "", 0, { }, CAP_INTERPOLATION_FUNCTION, &SpirVGenerator::visit_builtin_interpolate },
132 { "", "", "", 0, { }, 0, 0 }
135 SpirVGenerator::SpirVGenerator():
139 void SpirVGenerator::apply(Module &module, const Features &f)
142 use_capability(CAP_SHADER);
144 for(Stage &s: module.stages)
147 interface_layouts.clear();
148 s.content.visit(*this);
151 writer.finalize(SPIRV_GENERATOR_MSP, next_id);
154 SpirVGenerator::StorageClass SpirVGenerator::get_interface_storage(const string &iface, bool block)
157 return STORAGE_INPUT;
158 else if(iface=="out")
159 return STORAGE_OUTPUT;
160 else if(iface=="uniform")
161 return (block ? STORAGE_UNIFORM : STORAGE_UNIFORM_CONSTANT);
162 else if(iface.empty())
163 return STORAGE_PRIVATE;
165 throw invalid_argument("SpirVGenerator::get_interface_storage");
168 SpirVGenerator::BuiltinSemantic SpirVGenerator::get_builtin_semantic(const string &name)
170 if(name=="gl_Position")
171 return BUILTIN_POSITION;
172 else if(name=="gl_PointSize")
173 return BUILTIN_POINT_SIZE;
174 else if(name=="gl_ClipDistance")
175 return BUILTIN_CLIP_DISTANCE;
176 else if(name=="gl_VertexID")
177 return BUILTIN_VERTEX_ID;
178 else if(name=="gl_InstanceID")
179 return BUILTIN_INSTANCE_ID;
180 else if(name=="gl_PrimitiveID" || name=="gl_PrimitiveIDIn")
181 return BUILTIN_PRIMITIVE_ID;
182 else if(name=="gl_InvocationID")
183 return BUILTIN_INVOCATION_ID;
184 else if(name=="gl_Layer")
185 return BUILTIN_LAYER;
186 else if(name=="gl_FragCoord")
187 return BUILTIN_FRAG_COORD;
188 else if(name=="gl_PointCoord")
189 return BUILTIN_POINT_COORD;
190 else if(name=="gl_FrontFacing")
191 return BUILTIN_FRONT_FACING;
192 else if(name=="gl_SampleId")
193 return BUILTIN_SAMPLE_ID;
194 else if(name=="gl_SamplePosition")
195 return BUILTIN_SAMPLE_POSITION;
196 else if(name=="gl_FragDepth")
197 return BUILTIN_FRAG_DEPTH;
199 throw invalid_argument("SpirVGenerator::get_builtin_semantic");
202 void SpirVGenerator::use_capability(Capability cap)
204 if(used_capabilities.count(cap))
207 used_capabilities.insert(cap);
208 writer.write_op(content.capabilities, OP_CAPABILITY, cap);
211 SpirVGenerator::Id SpirVGenerator::import_extension(const string &name)
213 Id &ext_id = imported_extension_ids[name];
217 writer.begin_op(content.extensions, OP_EXT_INST_IMPORT);
218 writer.write(ext_id);
219 writer.write_string(name);
220 writer.end_op(OP_EXT_INST_IMPORT);
225 SpirVGenerator::Id SpirVGenerator::get_id(Node &node) const
227 return get_item(declared_ids, &node).id;
230 SpirVGenerator::Id SpirVGenerator::allocate_id(Node &node, Id type_id)
232 auto i = declared_ids.find(&node);
233 if(i!=declared_ids.end())
235 if(i->second.type_id)
236 throw key_error(&node);
237 i->second.type_id = type_id;
242 declared_ids.insert(make_pair(&node, Declaration(id, type_id)));
246 SpirVGenerator::Id SpirVGenerator::allocate_forward_id(Node &node)
248 auto i = declared_ids.find(&node);
249 if(i!=declared_ids.end())
253 declared_ids.insert(make_pair(&node, Declaration(id, 0)));
257 SpirVGenerator::Id SpirVGenerator::write_constant(Id type_id, Word value, bool spec)
259 Id const_id = next_id++;
260 if(is_scalar_type(type_id, BasicTypeDeclaration::BOOL))
262 Opcode opcode = (value ? (spec ? OP_SPEC_CONSTANT_TRUE : OP_CONSTANT_TRUE) :
263 (spec ? OP_SPEC_CONSTANT_FALSE : OP_CONSTANT_FALSE));
264 writer.write_op(content.globals, opcode, type_id, const_id);
268 Opcode opcode = (spec ? OP_SPEC_CONSTANT : OP_CONSTANT);
269 writer.write_op(content.globals, opcode, type_id, const_id, value);
274 SpirVGenerator::ConstantKey SpirVGenerator::get_constant_key(Id type_id, const Variant &value)
276 if(value.check_type<bool>())
277 return ConstantKey(type_id, value.value<bool>());
278 else if(value.check_type<int>())
279 return ConstantKey(type_id, value.value<int>());
280 else if(value.check_type<unsigned>())
281 return ConstantKey(type_id, value.value<unsigned>());
282 else if(value.check_type<float>())
283 return ConstantKey(type_id, value.value<float>());
285 throw invalid_argument("SpirVGenerator::get_constant_key");
288 SpirVGenerator::Id SpirVGenerator::get_constant_id(Id type_id, const Variant &value)
290 ConstantKey key = get_constant_key(type_id, value);
291 Id &const_id = constant_ids[key];
293 const_id = write_constant(type_id, key.int_value, false);
297 SpirVGenerator::Id SpirVGenerator::get_vector_constant_id(Id type_id, unsigned size, Id scalar_id)
299 Id &const_id = constant_ids[get_constant_key(type_id, static_cast<int>(scalar_id))];
302 const_id = next_id++;
303 writer.begin_op(content.globals, OP_CONSTANT_COMPOSITE, 3+size);
304 writer.write(type_id);
305 writer.write(const_id);
306 for(unsigned i=0; i<size; ++i)
307 writer.write(scalar_id);
308 writer.end_op(OP_CONSTANT_COMPOSITE);
313 SpirVGenerator::Id SpirVGenerator::get_standard_type_id(BasicTypeDeclaration::Kind kind, unsigned size, bool sign)
315 Id base_id = (size>1 ? get_standard_type_id(kind, 1, sign) : 0);
316 Id &type_id = standard_type_ids[base_id ? TypeKey(base_id, size) : TypeKey(kind, sign)];
321 writer.write_op(content.globals, OP_TYPE_VECTOR, type_id, base_id, size);
322 else if(kind==BasicTypeDeclaration::VOID)
323 writer.write_op(content.globals, OP_TYPE_VOID, type_id);
324 else if(kind==BasicTypeDeclaration::BOOL)
325 writer.write_op(content.globals, OP_TYPE_BOOL, type_id);
326 else if(kind==BasicTypeDeclaration::INT)
327 writer.write_op(content.globals, OP_TYPE_INT, type_id, 32, sign);
328 else if(kind==BasicTypeDeclaration::FLOAT)
329 writer.write_op(content.globals, OP_TYPE_FLOAT, type_id, 32);
331 throw invalid_argument("SpirVGenerator::get_standard_type_id");
336 bool SpirVGenerator::is_scalar_type(Id type_id, BasicTypeDeclaration::Kind kind) const
338 auto i = standard_type_ids.find(TypeKey(kind, true));
339 return (i!=standard_type_ids.end() && i->second==type_id);
342 SpirVGenerator::Id SpirVGenerator::get_array_type_id(TypeDeclaration &base_type, Id size_id, bool extended_align)
344 Id base_type_id = get_id(base_type);
345 Id &array_type_id = array_type_ids[TypeKey(base_type_id, extended_align*0x400000 | size_id)];
348 array_type_id = next_id++;
350 writer.write_op(content.globals, OP_TYPE_ARRAY, array_type_id, base_type_id, size_id);
352 writer.write_op(content.globals, OP_TYPE_RUNTIME_ARRAY, array_type_id, base_type_id);
354 unsigned stride = MemoryRequirementsCalculator().apply(base_type).stride;
356 stride = (stride+15)&~15U;
357 writer.write_op_decorate(array_type_id, DECO_ARRAY_STRIDE, stride);
360 return array_type_id;
363 SpirVGenerator::Id SpirVGenerator::get_pointer_type_id(Id type_id, StorageClass storage)
365 Id &ptr_type_id = pointer_type_ids[TypeKey(type_id, storage)];
368 ptr_type_id = next_id++;
369 writer.write_op(content.globals, OP_TYPE_POINTER, ptr_type_id, storage, type_id);
374 SpirVGenerator::Id SpirVGenerator::get_variable_type_id(const VariableDeclaration &var)
376 if(const BasicTypeDeclaration *basic = dynamic_cast<const BasicTypeDeclaration *>(var.type_declaration))
377 if(basic->kind==BasicTypeDeclaration::ARRAY)
380 throw logic_error("array without size");
382 SetFlag set_const(constant_expression);
383 r_expression_result_id = 0;
384 var.array_size->visit(*this);
385 return get_array_type_id(*basic->base_type, r_expression_result_id, basic->extended_alignment);
388 return get_id(*var.type_declaration);
391 SpirVGenerator::Id SpirVGenerator::get_load_id(VariableDeclaration &var)
393 Id &load_result_id = variable_load_ids[&var];
396 load_result_id = next_id++;
397 writer.write_op(content.function_body, OP_LOAD, get_variable_type_id(var), load_result_id, get_id(var));
399 return load_result_id;
402 void SpirVGenerator::prune_loads(Id min_id)
404 for(auto i=variable_load_ids.begin(); i!=variable_load_ids.end(); )
406 if(i->second>=min_id)
407 variable_load_ids.erase(i++);
413 SpirVGenerator::Id SpirVGenerator::begin_expression(Opcode opcode, Id type_id, unsigned n_args)
415 bool has_result = (opcode==OP_FUNCTION_CALL || !is_scalar_type(type_id, BasicTypeDeclaration::VOID));
416 if(!constant_expression)
418 if(!current_function)
419 throw internal_error("non-constant expression outside a function");
421 writer.begin_op(content.function_body, opcode, (n_args ? 1+has_result*2+n_args : 0));
423 else if(opcode==OP_COMPOSITE_CONSTRUCT)
424 writer.begin_op(content.globals, (spec_constant ? OP_SPEC_CONSTANT_COMPOSITE : OP_CONSTANT_COMPOSITE),
425 (n_args ? 1+has_result*2+n_args : 0));
426 else if(!spec_constant)
427 throw internal_error("invalid non-specialization constant expression");
429 writer.begin_op(content.globals, OP_SPEC_CONSTANT_OP, (n_args ? 2+has_result*2+n_args : 0));
431 Id result_id = next_id++;
434 writer.write(type_id);
435 writer.write(result_id);
437 if(spec_constant && opcode!=OP_COMPOSITE_CONSTRUCT)
438 writer.write(opcode);
443 void SpirVGenerator::end_expression(Opcode opcode)
445 if(constant_expression)
446 opcode = (opcode==OP_COMPOSITE_CONSTRUCT ? spec_constant ? OP_SPEC_CONSTANT_COMPOSITE : OP_CONSTANT_COMPOSITE : OP_SPEC_CONSTANT_OP);
447 writer.end_op(opcode);
450 SpirVGenerator::Id SpirVGenerator::write_expression(Opcode opcode, Id type_id, Id arg_id)
452 Id result_id = begin_expression(opcode, type_id, 1);
453 writer.write(arg_id);
454 end_expression(opcode);
458 SpirVGenerator::Id SpirVGenerator::write_expression(Opcode opcode, Id type_id, Id left_id, Id right_id)
460 Id result_id = begin_expression(opcode, type_id, 2);
461 writer.write(left_id);
462 writer.write(right_id);
463 end_expression(opcode);
467 void SpirVGenerator::write_deconstruct(Id elem_type_id, Id composite_id, Id *elem_ids, unsigned n_elems)
469 for(unsigned i=0; i<n_elems; ++i)
471 elem_ids[i] = begin_expression(OP_COMPOSITE_EXTRACT, elem_type_id, 2);
472 writer.write(composite_id);
474 end_expression(OP_COMPOSITE_EXTRACT);
478 SpirVGenerator::Id SpirVGenerator::write_construct(Id type_id, const Id *elem_ids, unsigned n_elems)
480 Id result_id = begin_expression(OP_COMPOSITE_CONSTRUCT, type_id, n_elems);
481 for(unsigned i=0; i<n_elems; ++i)
482 writer.write(elem_ids[i]);
483 end_expression(OP_COMPOSITE_CONSTRUCT);
488 void SpirVGenerator::visit(Block &block)
490 for(const RefPtr<Statement> &s: block.body)
494 void SpirVGenerator::visit(Literal &literal)
496 Id type_id = get_id(*literal.type);
498 r_expression_result_id = write_constant(type_id, get_constant_key(type_id, literal.value).int_value, true);
500 r_expression_result_id = get_constant_id(type_id, literal.value);
501 r_constant_result = true;
504 void SpirVGenerator::visit(VariableReference &var)
506 if(constant_expression || var.declaration->constant)
508 if(!var.declaration->constant)
509 throw internal_error("reference to non-constant variable in constant context");
511 r_expression_result_id = get_id(*var.declaration);
512 r_constant_result = true;
515 else if(!current_function)
516 throw internal_error("non-constant context outside a function");
518 r_constant_result = false;
521 r_expression_result_id = 0;
522 if(!assignment_source_id)
524 auto i = variable_load_ids.find(var.declaration);
525 if(i!=variable_load_ids.end())
526 r_expression_result_id = i->second;
528 if(!r_expression_result_id)
529 r_composite_base = var.declaration;
531 else if(assignment_source_id)
533 writer.write_op(content.function_body, OP_STORE, get_id(*var.declaration), assignment_source_id);
534 variable_load_ids[var.declaration] = assignment_source_id;
535 r_expression_result_id = assignment_source_id;
538 r_expression_result_id = get_load_id(*var.declaration);
541 void SpirVGenerator::generate_composite_access(TypeDeclaration &result_type)
544 Id result_type_id = get_id(result_type);
545 Id access_type_id = result_type_id;
548 if(constant_expression)
549 throw internal_error("composite access through pointer in constant context");
551 Id int32_type_id = get_standard_type_id(BasicTypeDeclaration::INT, 1);
552 for(unsigned &i: r_composite_chain)
553 i = (i<0x400000 ? get_constant_id(int32_type_id, static_cast<int>(i)) : i&0x3FFFFF);
555 /* Find the storage class of the base and obtain appropriate pointer type
557 const Declaration &base_decl = get_item(declared_ids, r_composite_base);
558 auto i = pointer_type_ids.begin();
559 for(; (i!=pointer_type_ids.end() && i->second!=base_decl.type_id); ++i) ;
560 if(i==pointer_type_ids.end())
561 throw internal_error("could not find storage class");
562 access_type_id = get_pointer_type_id(result_type_id, static_cast<StorageClass>(i->first.detail));
564 opcode = OP_ACCESS_CHAIN;
566 else if(assignment_source_id)
567 throw internal_error("assignment to temporary composite");
570 for(unsigned &i: r_composite_chain)
571 for(auto j=constant_ids.begin(); (i>=0x400000 && j!=constant_ids.end()); ++j)
572 if(j->second==(i&0x3FFFFF))
573 i = j->first.int_value;
575 opcode = OP_COMPOSITE_EXTRACT;
578 Id access_id = begin_expression(opcode, access_type_id, 1+r_composite_chain.size());
579 writer.write(r_composite_base_id);
580 for(unsigned i: r_composite_chain)
582 end_expression(opcode);
584 r_constant_result = false;
587 if(assignment_source_id)
589 writer.write_op(content.function_body, OP_STORE, access_id, assignment_source_id);
590 r_expression_result_id = assignment_source_id;
593 r_expression_result_id = write_expression(OP_LOAD, result_type_id, access_id);
596 r_expression_result_id = access_id;
599 void SpirVGenerator::visit_composite(Expression &base_expr, unsigned index, TypeDeclaration &type)
601 if(!composite_access)
603 r_composite_base = 0;
604 r_composite_base_id = 0;
605 r_composite_chain.clear();
609 SetFlag set_composite(composite_access);
610 base_expr.visit(*this);
613 if(!r_composite_base_id)
614 r_composite_base_id = (r_composite_base ? get_id(*r_composite_base) : r_expression_result_id);
616 r_composite_chain.push_back(index);
617 if(!composite_access)
618 generate_composite_access(type);
620 r_expression_result_id = 0;
623 void SpirVGenerator::visit_isolated(Expression &expr)
625 SetForScope<Id> clear_assign(assignment_source_id, 0);
626 SetFlag clear_composite(composite_access, false);
627 SetForScope<Node *> clear_base(r_composite_base, 0);
628 SetForScope<Id> clear_base_id(r_composite_base_id, 0);
629 vector<unsigned> saved_chain;
630 swap(saved_chain, r_composite_chain);
632 swap(saved_chain, r_composite_chain);
635 void SpirVGenerator::visit(MemberAccess &memacc)
637 visit_composite(*memacc.left, memacc.index, *memacc.type);
640 void SpirVGenerator::visit(Swizzle &swizzle)
643 visit_composite(*swizzle.left, swizzle.components[0], *swizzle.type);
644 else if(assignment_source_id)
646 const BasicTypeDeclaration &basic = dynamic_cast<const BasicTypeDeclaration &>(*swizzle.left->type);
649 for(unsigned i=0; i<swizzle.count; ++i)
650 mask |= 1<<swizzle.components[i];
652 visit_isolated(*swizzle.left);
654 Id combined_id = begin_expression(OP_VECTOR_SHUFFLE, get_id(*swizzle.left->type), 2+basic.size);
655 writer.write(r_expression_result_id);
656 writer.write(assignment_source_id);
657 for(unsigned i=0; i<basic.size; ++i)
658 writer.write(i+((mask>>i)&1)*basic.size);
659 end_expression(OP_VECTOR_SHUFFLE);
661 SetForScope<Id> set_assign(assignment_source_id, combined_id);
662 swizzle.left->visit(*this);
664 r_expression_result_id = combined_id;
668 swizzle.left->visit(*this);
669 Id left_id = r_expression_result_id;
671 r_expression_result_id = begin_expression(OP_VECTOR_SHUFFLE, get_id(*swizzle.type), 2+swizzle.count);
672 writer.write(left_id);
673 writer.write(left_id);
674 for(unsigned i=0; i<swizzle.count; ++i)
675 writer.write(swizzle.components[i]);
676 end_expression(OP_VECTOR_SHUFFLE);
678 r_constant_result = false;
681 void SpirVGenerator::visit(UnaryExpression &unary)
684 return visit_isolated(unary);
686 unary.expression->visit(*this);
688 char oper = unary.oper->token[0];
689 char oper2 = unary.oper->token[1];
690 if(oper=='+' && !oper2)
693 BasicTypeDeclaration &basic = dynamic_cast<BasicTypeDeclaration &>(*unary.expression->type);
694 BasicTypeDeclaration &elem = *get_element_type(basic);
696 if(constant_expression && elem.kind!=BasicTypeDeclaration::BOOL && elem.kind!=BasicTypeDeclaration::INT)
697 /* SPIR-V allows constant operations on floating-point values only for
699 throw internal_error("invalid operands for constant unary expression");
701 Id result_type_id = get_id(*unary.type);
702 Opcode opcode = OP_NOP;
704 r_constant_result = false;
706 opcode = OP_LOGICAL_NOT;
709 else if(oper=='-' && !oper2)
711 opcode = (elem.kind==BasicTypeDeclaration::INT ? OP_S_NEGATE : OP_F_NEGATE);
713 if(basic.kind==BasicTypeDeclaration::MATRIX)
715 Id column_type_id = get_id(*basic.base_type);
716 unsigned n_columns = basic.size&0xFFFF;
718 write_deconstruct(column_type_id, r_expression_result_id, column_ids, n_columns);
719 for(unsigned i=0; i<n_columns; ++i)
720 column_ids[i] = write_expression(opcode, column_type_id, column_ids[i]);
721 r_expression_result_id = write_construct(result_type_id, column_ids, n_columns);
725 else if((oper=='+' || oper=='-') && oper2==oper)
727 if(constant_expression)
728 throw internal_error("increment or decrement in constant expression");
731 if(elem.kind==BasicTypeDeclaration::INT)
733 opcode = (oper=='+' ? OP_I_ADD : OP_I_SUB);
734 one_id = get_constant_id(get_id(elem), 1);
736 else if(elem.kind==BasicTypeDeclaration::FLOAT)
738 opcode = (oper=='+' ? OP_F_ADD : OP_F_SUB);
739 one_id = get_constant_id(get_id(elem), 1.0f);
742 throw internal_error("invalid increment/decrement");
744 if(basic.kind==BasicTypeDeclaration::VECTOR)
745 one_id = get_vector_constant_id(result_type_id, basic.size, one_id);
747 Id post_value_id = write_expression(opcode, result_type_id, r_expression_result_id, one_id);
749 SetForScope<Id> set_assign(assignment_source_id, post_value_id);
750 unary.expression->visit(*this);
752 r_expression_result_id = (unary.oper->type==Operator::POSTFIX ? r_expression_result_id : post_value_id);
757 throw internal_error("unknown unary operator");
759 r_expression_result_id = write_expression(opcode, result_type_id, r_expression_result_id);
762 void SpirVGenerator::visit(BinaryExpression &binary)
764 char oper = binary.oper->token[0];
767 visit_isolated(*binary.right);
768 return visit_composite(*binary.left, 0x400000|r_expression_result_id, *binary.type);
770 else if(composite_access)
771 return visit_isolated(binary);
773 if(assignment_source_id)
774 throw internal_error("invalid binary expression in assignment target");
776 BasicTypeDeclaration &basic_left = dynamic_cast<BasicTypeDeclaration &>(*binary.left->type);
777 BasicTypeDeclaration &basic_right = dynamic_cast<BasicTypeDeclaration &>(*binary.right->type);
778 // Expression resolver ensures that element types are the same
779 BasicTypeDeclaration &elem = *get_element_type(basic_left);
781 if(constant_expression && elem.kind!=BasicTypeDeclaration::BOOL && elem.kind!=BasicTypeDeclaration::INT)
782 /* SPIR-V allows constant operations on floating-point values only for
784 throw internal_error("invalid operands for constant binary expression");
786 binary.left->visit(*this);
787 Id left_id = r_expression_result_id;
788 binary.right->visit(*this);
789 Id right_id = r_expression_result_id;
791 Id result_type_id = get_id(*binary.type);
792 Opcode opcode = OP_NOP;
793 bool swap_operands = false;
795 r_constant_result = false;
797 char oper2 = binary.oper->token[1];
798 if((oper=='<' || oper=='>') && oper2!=oper)
800 if(basic_left.kind==BasicTypeDeclaration::INT)
803 opcode = (oper=='<' ? (oper2=='=' ? OP_S_LESS_THAN_EQUAL : OP_S_LESS_THAN) :
804 (oper2=='=' ? OP_S_GREATER_THAN_EQUAL : OP_S_GREATER_THAN));
806 opcode = (oper=='<' ? (oper2=='=' ? OP_U_LESS_THAN_EQUAL : OP_U_LESS_THAN) :
807 (oper2=='=' ? OP_U_GREATER_THAN_EQUAL : OP_U_GREATER_THAN));
809 else if(basic_left.kind==BasicTypeDeclaration::FLOAT)
810 opcode = (oper=='<' ? (oper2=='=' ? OP_F_ORD_LESS_THAN_EQUAL : OP_F_ORD_LESS_THAN) :
811 (oper2=='=' ? OP_F_ORD_GREATER_THAN_EQUAL : OP_F_ORD_GREATER_THAN));
813 else if((oper=='=' || oper=='!') && oper2=='=')
815 if(elem.kind==BasicTypeDeclaration::BOOL)
816 opcode = (oper=='=' ? OP_LOGICAL_EQUAL : OP_LOGICAL_NOT_EQUAL);
817 else if(elem.kind==BasicTypeDeclaration::INT)
818 opcode = (oper=='=' ? OP_I_EQUAL : OP_I_NOT_EQUAL);
819 else if(elem.kind==BasicTypeDeclaration::FLOAT)
820 opcode = (oper=='=' ? OP_F_ORD_EQUAL : OP_F_ORD_NOT_EQUAL);
822 if(opcode!=OP_NOP && basic_left.base_type)
824 /* The SPIR-V equality operations produce component-wise results, but
825 GLSL operators return a single boolean. Use the any/all operations to
826 combine the results. */
827 Opcode combine_op = (oper=='!' ? OP_ANY : OP_ALL);
828 unsigned n_elems = basic_left.size&0xFFFF;
829 Id bool_vec_type_id = get_standard_type_id(BasicTypeDeclaration::BOOL, n_elems);
832 if(basic_left.kind==BasicTypeDeclaration::VECTOR)
833 compare_id = write_expression(opcode, bool_vec_type_id, left_id, right_id);
834 else if(basic_left.kind==BasicTypeDeclaration::MATRIX)
836 Id column_type_id = get_id(*basic_left.base_type);
838 write_deconstruct(column_type_id, left_id, column_ids, n_elems);
839 write_deconstruct(column_type_id, right_id, column_ids+4, n_elems);
841 Id column_bvec_type_id = get_standard_type_id(BasicTypeDeclaration::BOOL, basic_left.size>>16);
842 for(unsigned i=0; i<n_elems; ++i)
844 compare_id = write_expression(opcode, column_bvec_type_id, column_ids[i], column_ids[4+i]);
845 column_ids[i] = write_expression(combine_op, result_type_id, compare_id);;
848 compare_id = write_construct(bool_vec_type_id, column_ids, n_elems);
852 r_expression_result_id = write_expression(combine_op, result_type_id, compare_id);
856 else if(oper2=='&' && elem.kind==BasicTypeDeclaration::BOOL)
857 opcode = OP_LOGICAL_AND;
858 else if(oper2=='|' && elem.kind==BasicTypeDeclaration::BOOL)
859 opcode = OP_LOGICAL_OR;
860 else if(oper2=='^' && elem.kind==BasicTypeDeclaration::BOOL)
861 opcode = OP_LOGICAL_NOT_EQUAL;
862 else if(oper=='&' && elem.kind==BasicTypeDeclaration::INT)
863 opcode = OP_BITWISE_AND;
864 else if(oper=='|' && elem.kind==BasicTypeDeclaration::INT)
865 opcode = OP_BITWISE_OR;
866 else if(oper=='^' && elem.kind==BasicTypeDeclaration::INT)
867 opcode = OP_BITWISE_XOR;
868 else if(oper=='<' && oper2==oper && elem.kind==BasicTypeDeclaration::INT)
869 opcode = OP_SHIFT_LEFT_LOGICAL;
870 else if(oper=='>' && oper2==oper && elem.kind==BasicTypeDeclaration::INT)
871 opcode = OP_SHIFT_RIGHT_ARITHMETIC;
872 else if(oper=='%' && elem.kind==BasicTypeDeclaration::INT)
873 opcode = (elem.sign ? OP_S_MOD : OP_U_MOD);
874 else if(oper=='+' || oper=='-' || oper=='*' || oper=='/')
876 Opcode elem_op = OP_NOP;
877 if(elem.kind==BasicTypeDeclaration::INT)
880 elem_op = (elem.sign ? OP_S_DIV : OP_U_DIV);
882 elem_op = (oper=='+' ? OP_I_ADD : oper=='-' ? OP_I_SUB : OP_I_MUL);
884 else if(elem.kind==BasicTypeDeclaration::FLOAT)
885 elem_op = (oper=='+' ? OP_F_ADD : oper=='-' ? OP_F_SUB : oper=='*' ? OP_F_MUL : OP_F_DIV);
887 if(oper=='*' && (basic_left.base_type || basic_right.base_type) && elem.kind==BasicTypeDeclaration::FLOAT)
889 /* Multiplication between floating-point vectors and matrices has
890 dedicated operations. */
891 if(basic_left.kind==BasicTypeDeclaration::MATRIX && basic_right.kind==BasicTypeDeclaration::MATRIX)
892 opcode = OP_MATRIX_TIMES_MATRIX;
893 else if(basic_left.kind==BasicTypeDeclaration::MATRIX || basic_right.kind==BasicTypeDeclaration::MATRIX)
895 if(basic_left.kind==BasicTypeDeclaration::VECTOR)
896 opcode = OP_VECTOR_TIMES_MATRIX;
897 else if(basic_right.kind==BasicTypeDeclaration::VECTOR)
898 opcode = OP_MATRIX_TIMES_VECTOR;
901 opcode = OP_MATRIX_TIMES_SCALAR;
902 swap_operands = (basic_right.kind==BasicTypeDeclaration::MATRIX);
905 else if(basic_left.kind==BasicTypeDeclaration::VECTOR && basic_right.kind==BasicTypeDeclaration::VECTOR)
909 opcode = OP_VECTOR_TIMES_SCALAR;
910 swap_operands = (basic_right.kind==BasicTypeDeclaration::VECTOR);
913 else if((basic_left.base_type!=0)!=(basic_right.base_type!=0))
915 /* One operand is scalar and the other is a vector or a matrix.
916 Expand the scalar to a vector of appropriate size. */
917 Id &scalar_id = (basic_left.base_type ? right_id : left_id);
918 BasicTypeDeclaration *vector_type = (basic_left.base_type ? &basic_left : &basic_right);
919 if(vector_type->kind==BasicTypeDeclaration::MATRIX)
920 vector_type = dynamic_cast<BasicTypeDeclaration *>(vector_type->base_type);
921 Id vector_type_id = get_id(*vector_type);
923 Id expanded_id = begin_expression(OP_COMPOSITE_CONSTRUCT, vector_type_id, vector_type->size);
924 for(unsigned i=0; i<vector_type->size; ++i)
925 writer.write(scalar_id);
926 end_expression(OP_COMPOSITE_CONSTRUCT);
928 scalar_id = expanded_id;
930 if(basic_left.kind==BasicTypeDeclaration::MATRIX || basic_right.kind==BasicTypeDeclaration::MATRIX)
932 // Apply matrix operation column-wise.
933 Id matrix_id = (basic_left.base_type ? left_id : right_id);
936 unsigned n_columns = (basic_left.base_type ? basic_left.size : basic_right.size)&0xFFFF;
937 write_deconstruct(vector_type_id, matrix_id, column_ids, n_columns);
939 for(unsigned i=0; i<n_columns; ++i)
940 column_ids[i] = write_expression(elem_op, vector_type_id, column_ids[i], expanded_id);
942 r_expression_result_id = write_construct(result_type_id, column_ids, n_columns);
948 else if(basic_left.kind==BasicTypeDeclaration::MATRIX && basic_right.kind==BasicTypeDeclaration::MATRIX)
951 throw internal_error("non-float matrix multiplication");
953 /* Other operations involving matrices need to be performed
955 Id column_type_id = get_id(*basic_left.base_type);
958 unsigned n_columns = basic_left.size&0xFFFF;
959 write_deconstruct(column_type_id, left_id, column_ids, n_columns);
960 write_deconstruct(column_type_id, right_id, column_ids+4, n_columns);
962 for(unsigned i=0; i<n_columns; ++i)
963 column_ids[i] = write_expression(elem_op, column_type_id, column_ids[i], column_ids[4+i]);
965 r_expression_result_id = write_construct(result_type_id, column_ids, n_columns);
968 else if(basic_left.kind==basic_right.kind)
969 // Both operands are either scalars or vectors.
974 throw internal_error("unknown binary operator");
977 swap(left_id, right_id);
979 r_expression_result_id = write_expression(opcode, result_type_id, left_id, right_id);
982 void SpirVGenerator::visit(Assignment &assign)
984 if(assign.oper->token[0]!='=')
985 visit(static_cast<BinaryExpression &>(assign));
987 assign.right->visit(*this);
989 SetForScope<Id> set_assign(assignment_source_id, r_expression_result_id);
990 assign.left->visit(*this);
991 r_constant_result = false;
994 void SpirVGenerator::visit(TernaryExpression &ternary)
997 return visit_isolated(ternary);
998 if(constant_expression)
1000 ternary.condition->visit(*this);
1001 Id condition_id = r_expression_result_id;
1002 ternary.true_expr->visit(*this);
1003 Id true_result_id = r_expression_result_id;
1004 ternary.false_expr->visit(*this);
1005 Id false_result_id = r_expression_result_id;
1007 r_expression_result_id = begin_expression(OP_SELECT, get_id(*ternary.type), 3);
1008 writer.write(condition_id);
1009 writer.write(true_result_id);
1010 writer.write(false_result_id);
1011 end_expression(OP_SELECT);
1016 ternary.condition->visit(*this);
1017 Id condition_id = r_expression_result_id;
1019 Id true_label_id = next_id++;
1020 Id false_label_id = next_id++;
1021 Id merge_block_id = next_id++;
1022 writer.write_op(content.function_body, OP_SELECTION_MERGE, merge_block_id, 0); // Selection control (none)
1023 writer.write_op(content.function_body, OP_BRANCH_CONDITIONAL, condition_id, true_label_id, false_label_id);
1025 std::map<const VariableDeclaration *, Id> saved_load_ids = variable_load_ids;
1027 writer.write_op_label(true_label_id);
1028 ternary.true_expr->visit(*this);
1029 Id true_result_id = r_expression_result_id;
1030 true_label_id = writer.get_current_block();
1031 writer.write_op(content.function_body, OP_BRANCH, merge_block_id);
1033 swap(saved_load_ids, variable_load_ids);
1034 writer.write_op_label(false_label_id);
1035 ternary.false_expr->visit(*this);
1036 Id false_result_id = r_expression_result_id;
1037 false_label_id = writer.get_current_block();
1039 writer.write_op_label(merge_block_id);
1040 prune_loads(true_label_id);
1041 r_expression_result_id = begin_expression(OP_PHI, get_id(*ternary.type), 4);
1042 writer.write(true_result_id);
1043 writer.write(true_label_id);
1044 writer.write(false_result_id);
1045 writer.write(false_label_id);
1046 end_expression(OP_PHI);
1048 r_constant_result = false;
1051 void SpirVGenerator::visit(FunctionCall &call)
1053 if(assignment_source_id)
1054 throw internal_error("assignment to function call");
1055 else if(composite_access)
1056 return visit_isolated(call);
1057 else if(call.constructor && call.arguments.size()==1 && call.arguments[0]->type==call.type)
1058 return call.arguments[0]->visit(*this);
1060 vector<Id> argument_ids;
1061 argument_ids.reserve(call.arguments.size());
1062 bool all_args_const = true;
1063 for(const RefPtr<Expression> &a: call.arguments)
1066 argument_ids.push_back(r_expression_result_id);
1067 all_args_const &= r_constant_result;
1070 if(constant_expression && (!call.constructor || !all_args_const))
1071 throw internal_error("function call in constant expression");
1073 Id result_type_id = get_id(*call.type);
1074 r_constant_result = false;
1076 if(call.constructor)
1077 visit_constructor(call, argument_ids, all_args_const);
1078 else if(call.declaration->source==BUILTIN_SOURCE)
1081 for(const RefPtr<Expression> &a: call.arguments)
1082 if(BasicTypeDeclaration *basic_arg = dynamic_cast<BasicTypeDeclaration *>(a->type))
1084 BasicTypeDeclaration &elem_arg = *get_element_type(*basic_arg);
1085 switch(elem_arg.kind)
1087 case BasicTypeDeclaration::BOOL: arg_types += 'b'; break;
1088 case BasicTypeDeclaration::INT: arg_types += (elem_arg.sign ? 'i' : 'u'); break;
1089 case BasicTypeDeclaration::FLOAT: arg_types += 'f'; break;
1090 default: arg_types += '?';
1094 const BuiltinFunctionInfo *builtin_info;
1095 for(builtin_info=builtin_functions; builtin_info->function[0]; ++builtin_info)
1096 if(builtin_info->function==call.name && (!builtin_info->arg_types[0] || builtin_info->arg_types==arg_types))
1099 if(builtin_info->capability)
1100 use_capability(static_cast<Capability>(builtin_info->capability));
1102 if(builtin_info->opcode)
1105 if(builtin_info->extension[0])
1107 opcode = OP_EXT_INST;
1108 Id ext_id = import_extension(builtin_info->extension);
1110 r_expression_result_id = begin_expression(opcode, result_type_id);
1111 writer.write(ext_id);
1112 writer.write(builtin_info->opcode);
1116 opcode = static_cast<Opcode>(builtin_info->opcode);
1117 r_expression_result_id = begin_expression(opcode, result_type_id);
1120 for(unsigned i=0; i<call.arguments.size(); ++i)
1122 if(!builtin_info->arg_order[i] || builtin_info->arg_order[i]>argument_ids.size())
1123 throw internal_error("invalid builtin function info");
1124 writer.write(argument_ids[builtin_info->arg_order[i]-1]);
1127 end_expression(opcode);
1129 else if(builtin_info->handler)
1130 (this->*(builtin_info->handler))(call, argument_ids);
1132 throw internal_error("unknown builtin function "+call.name);
1136 r_expression_result_id = begin_expression(OP_FUNCTION_CALL, result_type_id, 1+call.arguments.size());
1137 writer.write(get_id(*call.declaration->definition));
1138 for(Id i: argument_ids)
1140 end_expression(OP_FUNCTION_CALL);
1142 // Any global variables the called function uses might have changed value
1143 set<Node *> dependencies = DependencyCollector().apply(*call.declaration->definition);
1144 for(Node *n: dependencies)
1145 if(const VariableDeclaration *var = dynamic_cast<const VariableDeclaration *>(n))
1146 variable_load_ids.erase(var);
1150 void SpirVGenerator::visit_constructor(FunctionCall &call, const vector<Id> &argument_ids, bool all_args_const)
1152 Id result_type_id = get_id(*call.type);
1154 BasicTypeDeclaration *basic = dynamic_cast<BasicTypeDeclaration *>(call.type);
1157 if(dynamic_cast<const StructDeclaration *>(call.type))
1158 r_expression_result_id = write_construct(result_type_id, &argument_ids[0], argument_ids.size());
1160 throw internal_error("unconstructable type "+call.name);
1164 SetFlag set_const(constant_expression, constant_expression || all_args_const);
1166 BasicTypeDeclaration &elem = *get_element_type(*basic);
1167 BasicTypeDeclaration &basic_arg0 = dynamic_cast<BasicTypeDeclaration &>(*call.arguments[0]->type);
1168 BasicTypeDeclaration &elem_arg0 = *get_element_type(basic_arg0);
1170 if(basic->kind==BasicTypeDeclaration::MATRIX)
1172 Id col_type_id = get_id(*basic->base_type);
1173 unsigned n_columns = basic->size&0xFFFF;
1174 unsigned n_rows = basic->size>>16;
1177 if(call.arguments.size()==1)
1179 // Construct diagonal matrix from a single scalar.
1180 Id zero_id = get_constant_id(get_id(elem), 0.0f);
1181 for(unsigned i=0; i<n_columns; ++i)
1183 column_ids[i] = begin_expression(OP_COMPOSITE_CONSTRUCT, col_type_id, n_rows);
1184 for(unsigned j=0; j<n_rows; ++j)
1185 writer.write(j==i ? argument_ids[0] : zero_id);
1186 end_expression(OP_COMPOSITE_CONSTRUCT);
1190 // Construct a matrix from column vectors
1191 copy(argument_ids.begin(), argument_ids.begin()+n_columns, column_ids);
1193 r_expression_result_id = write_construct(result_type_id, column_ids, n_columns);
1195 else if(basic->kind==BasicTypeDeclaration::VECTOR && (call.arguments.size()>1 || basic_arg0.kind!=BasicTypeDeclaration::VECTOR))
1197 /* There's either a single scalar argument or multiple arguments
1198 which make up the vector's components. */
1199 if(call.arguments.size()==1)
1201 r_expression_result_id = begin_expression(OP_COMPOSITE_CONSTRUCT, result_type_id);
1202 for(unsigned i=0; i<basic->size; ++i)
1203 writer.write(argument_ids[0]);
1204 end_expression(OP_COMPOSITE_CONSTRUCT);
1207 r_expression_result_id = write_construct(result_type_id, &argument_ids[0], argument_ids.size());
1209 else if(elem.kind==BasicTypeDeclaration::BOOL)
1211 if(constant_expression)
1212 throw internal_error("unconverted constant");
1214 // Conversion to boolean is implemented as comparing against zero.
1215 Id number_type_id = get_id(elem_arg0);
1216 Id zero_id = (elem_arg0.kind==BasicTypeDeclaration::FLOAT ?
1217 get_constant_id(number_type_id, 0.0f) : get_constant_id(number_type_id, 0));
1218 if(basic_arg0.kind==BasicTypeDeclaration::VECTOR)
1219 zero_id = get_vector_constant_id(get_id(basic_arg0), basic_arg0.size, zero_id);
1221 Opcode opcode = (elem_arg0.kind==BasicTypeDeclaration::FLOAT ? OP_F_ORD_NOT_EQUAL : OP_I_NOT_EQUAL);
1222 r_expression_result_id = write_expression(opcode, result_type_id, argument_ids[0], zero_id);
1224 else if(elem_arg0.kind==BasicTypeDeclaration::BOOL)
1226 if(constant_expression)
1227 throw internal_error("unconverted constant");
1229 /* Conversion from boolean is implemented as selecting from zero
1231 Id number_type_id = get_id(elem);
1232 Id zero_id = (elem.kind==BasicTypeDeclaration::FLOAT ?
1233 get_constant_id(number_type_id, 0.0f) : get_constant_id(number_type_id, 0));
1234 Id one_id = (elem.kind==BasicTypeDeclaration::FLOAT ?
1235 get_constant_id(number_type_id, 1.0f) : get_constant_id(number_type_id, 1));
1236 if(basic->kind==BasicTypeDeclaration::VECTOR)
1238 zero_id = get_vector_constant_id(get_id(*basic), basic->size, zero_id);
1239 one_id = get_vector_constant_id(get_id(*basic), basic->size, one_id);
1242 r_expression_result_id = begin_expression(OP_SELECT, result_type_id, 3);
1243 writer.write(argument_ids[0]);
1244 writer.write(zero_id);
1245 writer.write(one_id);
1246 end_expression(OP_SELECT);
1250 if(constant_expression)
1251 throw internal_error("unconverted constant");
1253 // Scalar or vector conversion between types of equal size.
1255 if(elem.kind==BasicTypeDeclaration::INT && elem_arg0.kind==BasicTypeDeclaration::FLOAT)
1256 opcode = (elem.sign ? OP_CONVERT_F_TO_S : OP_CONVERT_F_TO_U);
1257 else if(elem.kind==BasicTypeDeclaration::FLOAT && elem_arg0.kind==BasicTypeDeclaration::INT)
1258 opcode = (elem_arg0.sign ? OP_CONVERT_S_TO_F : OP_CONVERT_U_TO_F);
1259 else if(elem.kind==BasicTypeDeclaration::INT && elem_arg0.kind==BasicTypeDeclaration::INT)
1260 opcode = OP_BITCAST;
1262 throw internal_error("invalid conversion");
1264 r_expression_result_id = write_expression(opcode, result_type_id, argument_ids[0]);
1268 void SpirVGenerator::visit_builtin_matrix_comp_mult(FunctionCall &call, const vector<Id> &argument_ids)
1270 if(argument_ids.size()!=2)
1271 throw internal_error("invalid matrixCompMult call");
1273 const BasicTypeDeclaration &basic_arg0 = dynamic_cast<const BasicTypeDeclaration &>(*call.arguments[0]->type);
1274 Id column_type_id = get_id(*basic_arg0.base_type);
1277 unsigned n_columns = basic_arg0.size&0xFFFF;
1278 write_deconstruct(column_type_id, argument_ids[0], column_ids, n_columns);
1279 write_deconstruct(column_type_id, argument_ids[1], column_ids+4, n_columns);
1281 for(unsigned i=0; i<n_columns; ++i)
1282 column_ids[i] = write_expression(OP_F_MUL, column_type_id, column_ids[i], column_ids[4+i]);
1284 r_expression_result_id = write_construct(get_id(*call.type), column_ids, n_columns);
1287 void SpirVGenerator::visit_builtin_texture_query(FunctionCall &call, const vector<Id> &argument_ids)
1289 if(argument_ids.size()<1)
1290 throw internal_error("invalid texture query call");
1293 if(call.name=="textureSize")
1294 opcode = OP_IMAGE_QUERY_SIZE_LOD;
1295 else if(call.name=="textureQueryLod")
1296 opcode = OP_IMAGE_QUERY_LOD;
1297 else if(call.name=="textureQueryLevels")
1298 opcode = OP_IMAGE_QUERY_LEVELS;
1299 else if(call.name=="textureSamples")
1300 opcode = OP_IMAGE_QUERY_SAMPLES;
1302 throw internal_error("invalid texture query call");
1304 ImageTypeDeclaration &image_arg0 = dynamic_cast<ImageTypeDeclaration &>(*call.arguments[0]->type);
1307 if(image_arg0.sampled && opcode!=OP_IMAGE_QUERY_LOD)
1309 Id image_type_id = get_item(image_type_ids, get_id(image_arg0));
1310 image_id = write_expression(OP_IMAGE, image_type_id, argument_ids[0]);
1313 image_id = argument_ids[0];
1315 Id result_type_id = get_id(*call.type);
1316 r_expression_result_id = begin_expression(opcode, result_type_id, argument_ids.size());
1317 writer.write(image_id);
1318 for(unsigned i=1; i<argument_ids.size(); ++i)
1319 writer.write(argument_ids[i]);
1320 end_expression(opcode);
1323 void SpirVGenerator::visit_builtin_texture(FunctionCall &call, const vector<Id> &argument_ids)
1325 if(argument_ids.size()<2)
1326 throw internal_error("invalid texture sampling call");
1328 bool explicit_lod = (stage->type!=Stage::FRAGMENT || call.name=="textureLod");
1329 Id lod_id = (!explicit_lod ? 0 : call.name=="textureLod" ? argument_ids.back() :
1330 get_constant_id(get_standard_type_id(BasicTypeDeclaration::FLOAT, 1), 0.0f));
1332 const ImageTypeDeclaration &image = dynamic_cast<const ImageTypeDeclaration &>(*call.arguments[0]->type);
1335 Id result_type_id = get_id(*call.type);
1339 if(argument_ids.size()==2)
1341 const BasicTypeDeclaration &basic_arg1 = dynamic_cast<const BasicTypeDeclaration &>(*call.arguments[1]->type);
1342 dref_id = begin_expression(OP_COMPOSITE_EXTRACT, get_id(*basic_arg1.base_type), 2);
1343 writer.write(argument_ids.back());
1344 writer.write(basic_arg1.size-1);
1345 end_expression(OP_COMPOSITE_EXTRACT);
1348 dref_id = argument_ids[2];
1350 opcode = (explicit_lod ? OP_IMAGE_SAMPLE_DREF_EXPLICIT_LOD : OP_IMAGE_SAMPLE_DREF_IMPLICIT_LOD);
1351 r_expression_result_id = begin_expression(opcode, result_type_id, 3+explicit_lod*2);
1355 opcode = (explicit_lod ? OP_IMAGE_SAMPLE_EXPLICIT_LOD : OP_IMAGE_SAMPLE_IMPLICIT_LOD);
1356 r_expression_result_id = begin_expression(opcode, result_type_id, 2+explicit_lod*2);
1359 for(unsigned i=0; i<2; ++i)
1360 writer.write(argument_ids[i]);
1362 writer.write(dref_id);
1365 writer.write(2); // Lod
1366 writer.write(lod_id);
1369 end_expression(opcode);
1372 void SpirVGenerator::visit_builtin_texel_fetch(FunctionCall &call, const vector<Id> &argument_ids)
1374 if(argument_ids.size()!=3)
1375 throw internal_error("invalid texelFetch call");
1377 const ImageTypeDeclaration &image = dynamic_cast<const ImageTypeDeclaration &>(*call.arguments[0]->type);
1379 r_expression_result_id = begin_expression(OP_IMAGE_FETCH, get_id(*call.type), 4);
1380 for(unsigned i=0; i<2; ++i)
1381 writer.write(argument_ids[i]);
1382 writer.write(image.multisample ? 0x40 : 0x02); // Sample or Lod
1383 writer.write(argument_ids.back());
1384 end_expression(OP_IMAGE_FETCH);
1387 void SpirVGenerator::visit_builtin_interpolate(FunctionCall &call, const vector<Id> &argument_ids)
1389 if(argument_ids.size()<1)
1390 throw internal_error("invalid interpolate call");
1391 const VariableReference *var = dynamic_cast<const VariableReference *>(call.arguments[0].get());
1392 if(!var || !var->declaration || var->declaration->interface!="in")
1393 throw internal_error("invalid interpolate call");
1395 SpirVGlslStd450Opcode opcode;
1396 if(call.name=="interpolateAtCentroid")
1397 opcode = GLSL450_INTERPOLATE_AT_CENTROID;
1398 else if(call.name=="interpolateAtSample")
1399 opcode = GLSL450_INTERPOLATE_AT_SAMPLE;
1400 else if(call.name=="interpolateAtOffset")
1401 opcode = GLSL450_INTERPOLATE_AT_OFFSET;
1403 throw internal_error("invalid interpolate call");
1405 Id ext_id = import_extension("GLSL.std.450");
1406 r_expression_result_id = begin_expression(OP_EXT_INST, get_id(*call.type));
1407 writer.write(ext_id);
1408 writer.write(opcode);
1409 writer.write(get_id(*var->declaration));
1410 for(auto i=argument_ids.begin(); ++i!=argument_ids.end(); )
1412 end_expression(OP_EXT_INST);
1415 void SpirVGenerator::visit(ExpressionStatement &expr)
1417 expr.expression->visit(*this);
1420 void SpirVGenerator::visit(InterfaceLayout &layout)
1422 interface_layouts.push_back(&layout);
1425 bool SpirVGenerator::check_duplicate_type(TypeDeclaration &type)
1427 for(const auto &kvp: declared_ids)
1428 if(TypeDeclaration *type2 = dynamic_cast<TypeDeclaration *>(kvp.first))
1429 if(TypeComparer().apply(type, *type2))
1431 insert_unique(declared_ids, &type, kvp.second);
1438 bool SpirVGenerator::check_standard_type(BasicTypeDeclaration &basic)
1440 const BasicTypeDeclaration *elem = (basic.kind==BasicTypeDeclaration::VECTOR ?
1441 dynamic_cast<const BasicTypeDeclaration *>(basic.base_type) : &basic);
1442 if(!elem || elem->base_type)
1444 if((elem->kind==BasicTypeDeclaration::INT || elem->kind==BasicTypeDeclaration::FLOAT) && elem->size!=32)
1447 Id standard_id = get_standard_type_id(elem->kind, (basic.kind==BasicTypeDeclaration::VECTOR ? basic.size : 1), elem->sign);
1448 insert_unique(declared_ids, &basic, Declaration(standard_id, 0));
1449 writer.write_op_name(standard_id, basic.name);
1454 void SpirVGenerator::visit(BasicTypeDeclaration &basic)
1456 if(check_standard_type(basic))
1458 if(check_duplicate_type(basic))
1460 // Alias types shouldn't exist at this point and arrays are handled elsewhere
1461 if(basic.kind==BasicTypeDeclaration::ALIAS || basic.kind==BasicTypeDeclaration::ARRAY)
1464 Id type_id = allocate_id(basic, 0);
1465 writer.write_op_name(type_id, basic.name);
1469 case BasicTypeDeclaration::INT:
1470 writer.write_op(content.globals, OP_TYPE_INT, type_id, basic.size, basic.sign);
1472 case BasicTypeDeclaration::FLOAT:
1473 writer.write_op(content.globals, OP_TYPE_FLOAT, type_id, basic.size);
1475 case BasicTypeDeclaration::VECTOR:
1476 writer.write_op(content.globals, OP_TYPE_VECTOR, type_id, get_id(*basic.base_type), basic.size);
1478 case BasicTypeDeclaration::MATRIX:
1479 writer.write_op(content.globals, OP_TYPE_MATRIX, type_id, get_id(*basic.base_type), basic.size&0xFFFF);
1482 throw internal_error("unknown basic type");
1486 void SpirVGenerator::visit(ImageTypeDeclaration &image)
1488 if(check_duplicate_type(image))
1491 Id type_id = allocate_id(image, 0);
1493 Id image_id = (image.sampled ? next_id++ : type_id);
1494 writer.begin_op(content.globals, OP_TYPE_IMAGE, 9);
1495 writer.write(image_id);
1496 writer.write(get_id(*image.base_type));
1497 writer.write(image.dimensions-1);
1498 writer.write(image.shadow);
1499 writer.write(image.array);
1500 writer.write(image.multisample);
1501 writer.write(image.sampled ? 1 : 2);
1502 writer.write(0); // Format (unknown)
1503 writer.end_op(OP_TYPE_IMAGE);
1507 writer.write_op_name(type_id, image.name);
1508 writer.write_op(content.globals, OP_TYPE_SAMPLED_IMAGE, type_id, image_id);
1509 insert_unique(image_type_ids, type_id, image_id);
1512 if(image.dimensions==ImageTypeDeclaration::ONE)
1513 use_capability(image.sampled ? CAP_SAMPLED_1D : CAP_IMAGE_1D);
1514 else if(image.dimensions==ImageTypeDeclaration::CUBE && image.array)
1515 use_capability(image.sampled ? CAP_SAMPLED_CUBE_ARRAY : CAP_IMAGE_CUBE_ARRAY);
1518 void SpirVGenerator::visit(StructDeclaration &strct)
1520 if(check_duplicate_type(strct))
1523 Id type_id = allocate_id(strct, 0);
1524 writer.write_op_name(type_id, (strct.block_name.empty() ? strct.name : strct.block_name));
1526 if(!strct.block_name.empty())
1527 writer.write_op_decorate(type_id, DECO_BLOCK);
1529 bool builtin = !strct.block_name.compare(0, 3, "gl_");
1530 vector<Id> member_type_ids;
1531 member_type_ids.reserve(strct.members.body.size());
1532 for(const RefPtr<Statement> &s: strct.members.body)
1534 const VariableDeclaration *var = dynamic_cast<const VariableDeclaration *>(s.get());
1538 unsigned index = member_type_ids.size();
1539 member_type_ids.push_back(get_variable_type_id(*var));
1541 writer.write_op_member_name(type_id, index, var->name);
1545 BuiltinSemantic semantic = get_builtin_semantic(var->name);
1546 writer.write_op_member_decorate(type_id, index, DECO_BUILTIN, semantic);
1552 for(const Layout::Qualifier &q: var->layout->qualifiers)
1554 if(q.name=="offset")
1555 writer.write_op_member_decorate(type_id, index, DECO_OFFSET, q.value);
1556 else if(q.name=="column_major")
1557 writer.write_op_member_decorate(type_id, index, DECO_COL_MAJOR);
1558 else if(q.name=="row_major")
1559 writer.write_op_member_decorate(type_id, index, DECO_ROW_MAJOR);
1563 const BasicTypeDeclaration *basic = dynamic_cast<const BasicTypeDeclaration *>(var->type_declaration);
1564 while(basic && basic->kind==BasicTypeDeclaration::ARRAY)
1565 basic = dynamic_cast<const BasicTypeDeclaration *>(basic->base_type);
1566 if(basic && basic->kind==BasicTypeDeclaration::MATRIX)
1568 unsigned stride = MemoryRequirementsCalculator().apply(*basic->base_type).stride;
1569 writer.write_op_member_decorate(type_id, index, DECO_MATRIX_STRIDE, stride);
1574 writer.begin_op(content.globals, OP_TYPE_STRUCT);
1575 writer.write(type_id);
1576 for(Id i: member_type_ids)
1578 writer.end_op(OP_TYPE_STRUCT);
1581 void SpirVGenerator::visit(VariableDeclaration &var)
1583 Id type_id = get_variable_type_id(var);
1588 if(!var.init_expression)
1589 throw internal_error("const variable without initializer");
1591 int spec_id = get_layout_value(var.layout.get(), "constant_id");
1592 Id *spec_var_id = (spec_id>=0 ? &declared_spec_ids[spec_id] : 0);
1593 if(spec_id>=0 && *spec_var_id)
1595 insert_unique(declared_ids, &var, Declaration(*spec_var_id, type_id));
1599 SetFlag set_const(constant_expression);
1600 SetFlag set_spec(spec_constant, spec_id>=0);
1601 r_expression_result_id = 0;
1602 var.init_expression->visit(*this);
1603 var_id = r_expression_result_id;
1604 insert_unique(declared_ids, &var, Declaration(var_id, type_id));
1607 writer.write_op_decorate(var_id, DECO_SPEC_ID, spec_id);
1608 *spec_var_id = var_id;
1613 bool push_const = has_layout_qualifier(var.layout.get(), "push_constant");
1615 StorageClass storage;
1616 if(current_function)
1617 storage = STORAGE_FUNCTION;
1619 storage = STORAGE_PUSH_CONSTANT;
1621 storage = get_interface_storage(var.interface, var.block_declaration);
1623 Id ptr_type_id = get_pointer_type_id(type_id, storage);
1624 if(var.interface=="uniform")
1626 Id &uni_id = declared_uniform_ids[var.block_declaration ? "b"+var.block_declaration->block_name : "v"+var.name];
1629 insert_unique(declared_ids, &var, Declaration(uni_id, ptr_type_id));
1633 uni_id = var_id = allocate_id(var, ptr_type_id);
1636 var_id = allocate_id(var, (var.constant ? type_id : ptr_type_id));
1639 if(var.init_expression)
1641 SetFlag set_const(constant_expression, !current_function);
1642 r_expression_result_id = 0;
1643 r_constant_result = false;
1644 var.init_expression->visit(*this);
1645 init_id = r_expression_result_id;
1648 vector<Word> &target = (current_function ? content.locals : content.globals);
1649 writer.begin_op(target, OP_VARIABLE, 4+(init_id && !current_function));
1650 writer.write(ptr_type_id);
1651 writer.write(var_id);
1652 writer.write(storage);
1653 if(init_id && !current_function)
1654 writer.write(init_id);
1655 writer.end_op(OP_VARIABLE);
1659 for(const Layout::Qualifier &q: var.layout->qualifiers)
1661 if(q.name=="location")
1662 writer.write_op_decorate(var_id, DECO_LOCATION, q.value);
1663 else if(q.name=="set")
1664 writer.write_op_decorate(var_id, DECO_DESCRIPTOR_SET, q.value);
1665 else if(q.name=="binding")
1666 writer.write_op_decorate(var_id, DECO_BINDING, q.value);
1669 if(!var.block_declaration && !var.name.compare(0, 3, "gl_"))
1671 BuiltinSemantic semantic = get_builtin_semantic(var.name);
1672 writer.write_op_decorate(var_id, DECO_BUILTIN, semantic);
1675 if(init_id && current_function)
1677 writer.write_op(content.function_body, OP_STORE, var_id, init_id);
1678 variable_load_ids[&var] = init_id;
1682 if(var.name.find(' ')==string::npos)
1683 writer.write_op_name(var_id, var.name);
1686 void SpirVGenerator::visit_entry_point(FunctionDeclaration &func, Id func_id)
1688 writer.begin_op(content.entry_points, OP_ENTRY_POINT);
1691 case Stage::VERTEX: writer.write(0); break;
1692 case Stage::GEOMETRY: writer.write(3); break;
1693 case Stage::FRAGMENT: writer.write(4); break;
1694 default: throw internal_error("unknown stage");
1696 writer.write(func_id);
1697 writer.write_string(func.name);
1699 set<Node *> dependencies = DependencyCollector().apply(func);
1700 for(Node *n: dependencies)
1701 if(const VariableDeclaration *var = dynamic_cast<const VariableDeclaration *>(n))
1702 if(!var->interface.empty())
1703 writer.write(get_id(*n));
1705 writer.end_op(OP_ENTRY_POINT);
1707 if(stage->type==Stage::FRAGMENT)
1709 SpirVExecutionMode origin = (features.target_api==VULKAN ? EXEC_ORIGIN_UPPER_LEFT : EXEC_ORIGIN_LOWER_LEFT);
1710 writer.write_op(content.exec_modes, OP_EXECUTION_MODE, func_id, origin);
1712 else if(stage->type==Stage::GEOMETRY)
1714 use_capability(CAP_GEOMETRY);
1715 writer.write_op(content.exec_modes, OP_EXECUTION_MODE, func_id, EXEC_INVOCATIONS, 1);
1718 for(const InterfaceLayout *i: interface_layouts)
1720 for(const Layout::Qualifier &q: i->layout.qualifiers)
1723 writer.write_op(content.exec_modes, OP_EXECUTION_MODE, func_id,
1724 (i->interface=="in" ? EXEC_INPUT_POINTS : EXEC_OUTPUT_POINTS));
1725 else if(q.name=="lines")
1726 writer.write_op(content.exec_modes, OP_EXECUTION_MODE, func_id, EXEC_INPUT_LINES);
1727 else if(q.name=="lines_adjacency")
1728 writer.write_op(content.exec_modes, OP_EXECUTION_MODE, func_id, EXEC_INPUT_LINES_ADJACENCY);
1729 else if(q.name=="triangles")
1730 writer.write_op(content.exec_modes, OP_EXECUTION_MODE, func_id, EXEC_TRIANGLES);
1731 else if(q.name=="triangles_adjacency")
1732 writer.write_op(content.exec_modes, OP_EXECUTION_MODE, func_id, EXEC_INPUT_TRIANGLES_ADJACENCY);
1733 else if(q.name=="line_strip")
1734 writer.write_op(content.exec_modes, OP_EXECUTION_MODE, func_id, EXEC_OUTPUT_LINE_STRIP);
1735 else if(q.name=="triangle_strip")
1736 writer.write_op(content.exec_modes, OP_EXECUTION_MODE, func_id, EXEC_OUTPUT_TRIANGLE_STRIP);
1737 else if(q.name=="max_vertices")
1738 writer.write_op(content.exec_modes, OP_EXECUTION_MODE, func_id, EXEC_OUTPUT_VERTICES, q.value);
1743 void SpirVGenerator::visit(FunctionDeclaration &func)
1745 if(func.source==BUILTIN_SOURCE)
1747 else if(func.definition!=&func)
1750 allocate_forward_id(*func.definition);
1754 Id return_type_id = get_id(*func.return_type_declaration);
1755 vector<unsigned> param_type_ids;
1756 param_type_ids.reserve(func.parameters.size());
1757 for(const RefPtr<VariableDeclaration> &p: func.parameters)
1758 param_type_ids.push_back(get_variable_type_id(*p));
1760 string sig_with_return = func.return_type+func.signature;
1761 Id &type_id = function_type_ids[sig_with_return];
1764 type_id = next_id++;
1765 writer.begin_op(content.globals, OP_TYPE_FUNCTION);
1766 writer.write(type_id);
1767 writer.write(return_type_id);
1768 for(unsigned i: param_type_ids)
1770 writer.end_op(OP_TYPE_FUNCTION);
1772 writer.write_op_name(type_id, sig_with_return);
1775 Id func_id = allocate_id(func, type_id);
1776 writer.write_op_name(func_id, func.name+func.signature);
1778 if(func.name=="main")
1779 visit_entry_point(func, func_id);
1781 writer.begin_op(content.functions, OP_FUNCTION, 5);
1782 writer.write(return_type_id);
1783 writer.write(func_id);
1784 writer.write(0); // Function control flags (none)
1785 writer.write(type_id);
1786 writer.end_op(OP_FUNCTION);
1788 for(unsigned i=0; i<func.parameters.size(); ++i)
1790 Id param_id = allocate_id(*func.parameters[i], param_type_ids[i]);
1791 writer.write_op(content.functions, OP_FUNCTION_PARAMETER, param_type_ids[i], param_id);
1792 writer.write_op_name(param_id, func.parameters[i]->name);
1793 // TODO This is probably incorrect if the parameter is assigned to.
1794 variable_load_ids[func.parameters[i].get()] = param_id;
1798 writer.begin_function_body(next_id++);
1799 SetForScope<FunctionDeclaration *> set_func(current_function, &func);
1800 func.body.visit(*this);
1802 if(writer.get_current_block())
1805 writer.write_op(content.function_body, OP_UNREACHABLE);
1808 const BasicTypeDeclaration *basic_return = dynamic_cast<const BasicTypeDeclaration *>(func.return_type_declaration);
1809 if(basic_return && basic_return->kind==BasicTypeDeclaration::VOID)
1810 writer.write_op(content.function_body, OP_RETURN);
1812 throw internal_error("missing return in non-void function");
1815 writer.end_function_body();
1816 variable_load_ids.clear();
1819 void SpirVGenerator::visit(Conditional &cond)
1821 cond.condition->visit(*this);
1823 Id true_label_id = next_id++;
1824 Id merge_block_id = next_id++;
1825 Id false_label_id = (cond.else_body.body.empty() ? merge_block_id : next_id++);
1826 writer.write_op(content.function_body, OP_SELECTION_MERGE, merge_block_id, 0); // Selection control (none)
1827 writer.write_op(content.function_body, OP_BRANCH_CONDITIONAL, r_expression_result_id, true_label_id, false_label_id);
1829 std::map<const VariableDeclaration *, Id> saved_load_ids = variable_load_ids;
1831 writer.write_op_label(true_label_id);
1832 cond.body.visit(*this);
1833 if(writer.get_current_block())
1834 writer.write_op(content.function_body, OP_BRANCH, merge_block_id);
1836 bool reachable_if_true = reachable;
1839 if(!cond.else_body.body.empty())
1841 swap(saved_load_ids, variable_load_ids);
1842 writer.write_op_label(false_label_id);
1843 cond.else_body.visit(*this);
1844 reachable |= reachable_if_true;
1847 writer.write_op_label(merge_block_id);
1848 prune_loads(true_label_id);
1851 void SpirVGenerator::visit(Iteration &iter)
1853 if(iter.init_statement)
1854 iter.init_statement->visit(*this);
1856 for(Node *n: AssignmentCollector().apply(iter))
1857 if(VariableDeclaration *var = dynamic_cast<VariableDeclaration *>(n))
1858 variable_load_ids.erase(var);
1860 Id header_id = next_id++;
1861 Id continue_id = next_id++;
1862 Id merge_block_id = next_id++;
1864 SetForScope<Id> set_merge(loop_merge_block_id, merge_block_id);
1865 SetForScope<Id> set_continue(loop_continue_target_id, continue_id);
1867 writer.write_op_label(header_id);
1868 writer.write_op(content.function_body, OP_LOOP_MERGE, merge_block_id, continue_id, 0); // Loop control (none)
1870 Id body_id = next_id++;
1873 writer.write_op_label(next_id++);
1874 iter.condition->visit(*this);
1875 writer.write_op(content.function_body, OP_BRANCH_CONDITIONAL, r_expression_result_id, body_id, merge_block_id);
1878 writer.write_op_label(body_id);
1879 iter.body.visit(*this);
1881 writer.write_op_label(continue_id);
1882 if(iter.loop_expression)
1883 iter.loop_expression->visit(*this);
1884 writer.write_op(content.function_body, OP_BRANCH, header_id);
1886 writer.write_op_label(merge_block_id);
1887 prune_loads(header_id);
1891 void SpirVGenerator::visit(Return &ret)
1895 ret.expression->visit(*this);
1896 writer.write_op(content.function_body, OP_RETURN_VALUE, r_expression_result_id);
1899 writer.write_op(content.function_body, OP_RETURN);
1903 void SpirVGenerator::visit(Jump &jump)
1905 if(jump.keyword=="discard")
1906 writer.write_op(content.function_body, OP_KILL);
1907 else if(jump.keyword=="break")
1908 writer.write_op(content.function_body, OP_BRANCH, loop_merge_block_id);
1909 else if(jump.keyword=="continue")
1910 writer.write_op(content.function_body, OP_BRANCH, loop_continue_target_id);
1912 throw internal_error("unknown jump");
1917 SpirVGenerator::TypeKey::TypeKey(BasicTypeDeclaration::Kind kind, bool sign):
1922 case BasicTypeDeclaration::VOID: detail = 'v'; break;
1923 case BasicTypeDeclaration::BOOL: detail = 'b'; break;
1924 case BasicTypeDeclaration::INT: detail = (sign ? 'i' : 'u'); break;
1925 case BasicTypeDeclaration::FLOAT: detail = 'f'; break;
1926 default: throw invalid_argument("TypeKey::TypeKey");
1930 bool SpirVGenerator::TypeKey::operator<(const TypeKey &other) const
1932 if(type_id!=other.type_id)
1933 return type_id<other.type_id;
1934 return detail<other.detail;
1938 bool SpirVGenerator::ConstantKey::operator<(const ConstantKey &other) const
1940 if(type_id!=other.type_id)
1941 return type_id<other.type_id;
1942 return int_value<other.int_value;