1 /*
2 * Copyright 2016 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "SkSLCompiler.h"
9
10 #include "Test.h"
11
12 #if SK_SUPPORT_GPU
13
test_failure(skiatest::Reporter * r,const char * src,const char * error)14 static void test_failure(skiatest::Reporter* r, const char* src, const char* error) {
15 SkSL::Compiler compiler;
16 SkSL::Program::Settings settings;
17 sk_sp<GrShaderCaps> caps = SkSL::ShaderCapsFactory::Default();
18 settings.fCaps = caps.get();
19 compiler.convertProgram(SkSL::Program::kFragment_Kind, SkString(src), settings);
20 SkSL::String skError(error);
21 if (compiler.errorText() != skError) {
22 SkDebugf("SKSL ERROR:\n source: %s\n expected: %s received: %s", src, error,
23 compiler.errorText().c_str());
24 }
25 REPORTER_ASSERT(r, compiler.errorText() == skError);
26 }
27
test_success(skiatest::Reporter * r,const char * src)28 static void test_success(skiatest::Reporter* r, const char* src) {
29 SkSL::Compiler compiler;
30 SkSL::Program::Settings settings;
31 sk_sp<GrShaderCaps> caps = SkSL::ShaderCapsFactory::Default();
32 settings.fCaps = caps.get();
33 std::unique_ptr<SkSL::Program> program = compiler.convertProgram(SkSL::Program::kFragment_Kind,
34 SkString(src), settings);
35 REPORTER_ASSERT(r, program);
36 }
37
DEF_TEST(SkSLUndefinedSymbol,r)38 DEF_TEST(SkSLUndefinedSymbol, r) {
39 test_failure(r,
40 "void main() { x = vec2(1); }",
41 "error: 1: unknown identifier 'x'\n1 error\n");
42 }
43
DEF_TEST(SkSLUndefinedFunction,r)44 DEF_TEST(SkSLUndefinedFunction, r) {
45 test_failure(r,
46 "void main() { int x = foo(1); }",
47 "error: 1: unknown identifier 'foo'\n1 error\n");
48 }
49
DEF_TEST(SkSLGenericArgumentMismatch,r)50 DEF_TEST(SkSLGenericArgumentMismatch, r) {
51 test_failure(r,
52 "void main() { float x = sin(1, 2); }",
53 "error: 1: call to 'sin' expected 1 argument, but found 2\n1 error\n");
54 test_failure(r,
55 "void main() { float x = sin(true); }",
56 "error: 1: no match for sin(bool)\n1 error\n");
57 test_success(r,
58 "void main() { float x = sin(1); }");
59 }
60
DEF_TEST(SkSLArgumentCountMismatch,r)61 DEF_TEST(SkSLArgumentCountMismatch, r) {
62 test_failure(r,
63 "float foo(float x) { return x * x; }"
64 "void main() { float x = foo(1, 2); }",
65 "error: 1: call to 'foo' expected 1 argument, but found 2\n1 error\n");
66 }
67
DEF_TEST(SkSLArgumentMismatch,r)68 DEF_TEST(SkSLArgumentMismatch, r) {
69 test_failure(r,
70 "float foo(float x) { return x * x; }"
71 "void main() { float x = foo(true); }",
72 "error: 1: expected 'float', but found 'bool'\n1 error\n");
73 }
74
DEF_TEST(SkSLIfTypeMismatch,r)75 DEF_TEST(SkSLIfTypeMismatch, r) {
76 test_failure(r,
77 "void main() { if (3) { } }",
78 "error: 1: expected 'bool', but found 'int'\n1 error\n");
79 }
80
DEF_TEST(SkSLDoTypeMismatch,r)81 DEF_TEST(SkSLDoTypeMismatch, r) {
82 test_failure(r,
83 "void main() { do { } while (vec2(1)); }",
84 "error: 1: expected 'bool', but found 'vec2'\n1 error\n");
85 }
86
DEF_TEST(SkSLWhileTypeMismatch,r)87 DEF_TEST(SkSLWhileTypeMismatch, r) {
88 test_failure(r,
89 "void main() { while (vec3(1)) { } }",
90 "error: 1: expected 'bool', but found 'vec3'\n1 error\n");
91 }
92
DEF_TEST(SkSLForTypeMismatch,r)93 DEF_TEST(SkSLForTypeMismatch, r) {
94 test_failure(r,
95 "void main() { for (int x = 0; x; x++) { } }",
96 "error: 1: expected 'bool', but found 'int'\n1 error\n");
97 }
98
DEF_TEST(SkSLConstructorTypeMismatch,r)99 DEF_TEST(SkSLConstructorTypeMismatch, r) {
100 test_failure(r,
101 "void main() { vec2 x = vec2(1.0, false); }",
102 "error: 1: expected 'float', but found 'bool'\n1 error\n");
103 test_failure(r,
104 "void main() { vec2 x = vec2(bvec2(false)); }",
105 "error: 1: 'bvec2' is not a valid parameter to 'vec2' constructor\n1 error\n");
106 test_failure(r,
107 "void main() { bvec2 x = bvec2(vec2(1)); }",
108 "error: 1: 'vec2' is not a valid parameter to 'bvec2' constructor\n1 error\n");
109 test_failure(r,
110 "void main() { bool x = bool(1.0); }",
111 "error: 1: cannot construct 'bool'\n1 error\n");
112 test_failure(r,
113 "struct foo { int x; }; void main() { foo x = foo(5); }",
114 "error: 1: cannot construct 'foo'\n1 error\n");
115 test_failure(r,
116 "struct foo { int x; } foo; void main() { float x = float(foo); }",
117 "error: 1: invalid argument to 'float' constructor (expected a number or bool, but found 'foo')\n1 error\n");
118 test_failure(r,
119 "struct foo { int x; } foo; void main() { vec2 x = vec2(foo); }",
120 "error: 1: 'foo' is not a valid parameter to 'vec2' constructor\n1 error\n");
121 test_failure(r,
122 "void main() { mat2 x = mat2(true); }",
123 "error: 1: expected 'float', but found 'bool'\n1 error\n");
124 }
125
DEF_TEST(SkSLConstructorArgumentCount,r)126 DEF_TEST(SkSLConstructorArgumentCount, r) {
127 test_failure(r,
128 "void main() { vec3 x = vec3(1.0, 2.0); }",
129 "error: 1: invalid arguments to 'vec3' constructor (expected 3 scalars, but "
130 "found 2)\n1 error\n");
131 test_failure(r,
132 "void main() { vec3 x = vec3(1.0, 2.0, 3.0, 4.0); }",
133 "error: 1: invalid arguments to 'vec3' constructor (expected 3 scalars, but found "
134 "4)\n1 error\n");
135 }
136
DEF_TEST(SkSLSwizzleScalar,r)137 DEF_TEST(SkSLSwizzleScalar, r) {
138 test_failure(r,
139 "void main() { float x = 1; float y = x.y; }",
140 "error: 1: cannot swizzle value of type 'float'\n1 error\n");
141 }
142
DEF_TEST(SkSLSwizzleMatrix,r)143 DEF_TEST(SkSLSwizzleMatrix, r) {
144 test_failure(r,
145 "void main() { mat2 x = mat2(1); float y = x.y; }",
146 "error: 1: cannot swizzle value of type 'mat2'\n1 error\n");
147 }
148
DEF_TEST(SkSLSwizzleOutOfBounds,r)149 DEF_TEST(SkSLSwizzleOutOfBounds, r) {
150 test_failure(r,
151 "void main() { vec3 test = vec2(1).xyz; }",
152 "error: 1: invalid swizzle component 'z'\n1 error\n");
153 }
154
DEF_TEST(SkSLSwizzleTooManyComponents,r)155 DEF_TEST(SkSLSwizzleTooManyComponents, r) {
156 test_failure(r,
157 "void main() { vec4 test = vec2(1).xxxxx; }",
158 "error: 1: too many components in swizzle mask 'xxxxx'\n1 error\n");
159 }
160
DEF_TEST(SkSLSwizzleDuplicateOutput,r)161 DEF_TEST(SkSLSwizzleDuplicateOutput, r) {
162 test_failure(r,
163 "void main() { vec4 test = vec4(1); test.xyyz = vec4(1); }",
164 "error: 1: cannot write to the same swizzle field more than once\n1 error\n");
165 }
166
DEF_TEST(SkSLAssignmentTypeMismatch,r)167 DEF_TEST(SkSLAssignmentTypeMismatch, r) {
168 test_failure(r,
169 "void main() { int x = 1.0; }",
170 "error: 1: expected 'int', but found 'float'\n1 error\n");
171 test_failure(r,
172 "void main() { int x; x = 1.0; }",
173 "error: 1: type mismatch: '=' cannot operate on 'int', 'float'\n1 error\n");
174 test_success(r,
175 "void main() { vec3 x = vec3(0); x *= 1.0; }");
176 test_failure(r,
177 "void main() { ivec3 x = ivec3(0); x *= 1.0; }",
178 "error: 1: type mismatch: '*=' cannot operate on 'ivec3', 'float'\n1 error\n");
179 }
180
DEF_TEST(SkSLReturnFromVoid,r)181 DEF_TEST(SkSLReturnFromVoid, r) {
182 test_failure(r,
183 "void main() { return true; }",
184 "error: 1: may not return a value from a void function\n1 error\n");
185 }
186
DEF_TEST(SkSLReturnMissingValue,r)187 DEF_TEST(SkSLReturnMissingValue, r) {
188 test_failure(r,
189 "int foo() { return; } void main() { }",
190 "error: 1: expected function to return 'int'\n1 error\n");
191 }
192
DEF_TEST(SkSLReturnTypeMismatch,r)193 DEF_TEST(SkSLReturnTypeMismatch, r) {
194 test_failure(r,
195 "int foo() { return 1.0; } void main() { }",
196 "error: 1: expected 'int', but found 'float'\n1 error\n");
197 }
198
DEF_TEST(SkSLDuplicateFunction,r)199 DEF_TEST(SkSLDuplicateFunction, r) {
200 test_failure(r,
201 "void main() { } void main() { }",
202 "error: 1: duplicate definition of void main()\n1 error\n");
203 test_success(r,
204 "void main(); void main() { }");
205 }
206
DEF_TEST(SkSLUsingInvalidValue,r)207 DEF_TEST(SkSLUsingInvalidValue, r) {
208 test_failure(r,
209 "void main() { int x = int; }",
210 "error: 1: expected '(' to begin constructor invocation\n1 error\n");
211 test_failure(r,
212 "int test() { return 1; } void main() { int x = test; }",
213 "error: 1: expected '(' to begin function call\n1 error\n");
214 }
DEF_TEST(SkSLDifferentReturnType,r)215 DEF_TEST(SkSLDifferentReturnType, r) {
216 test_failure(r,
217 "int main() { return 1; } void main() { }",
218 "error: 1: functions 'void main()' and 'int main()' differ only in return type\n1 "
219 "error\n");
220 }
221
DEF_TEST(SkSLDifferentModifiers,r)222 DEF_TEST(SkSLDifferentModifiers, r) {
223 test_failure(r,
224 "void test(int x); void test(out int x) { }",
225 "error: 1: modifiers on parameter 1 differ between declaration and definition\n1 "
226 "error\n");
227 }
228
DEF_TEST(SkSLDuplicateSymbol,r)229 DEF_TEST(SkSLDuplicateSymbol, r) {
230 test_failure(r,
231 "int main; void main() { }",
232 "error: 1: symbol 'main' was already defined\n1 error\n");
233
234 test_failure(r,
235 "int x; int x; void main() { }",
236 "error: 1: symbol 'x' was already defined\n1 error\n");
237
238 test_success(r, "int x; void main() { int x; }");
239 }
240
DEF_TEST(SkSLBinaryTypeMismatch,r)241 DEF_TEST(SkSLBinaryTypeMismatch, r) {
242 test_failure(r,
243 "void main() { float x = 3 * true; }",
244 "error: 1: type mismatch: '*' cannot operate on 'int', 'bool'\n1 error\n");
245 test_failure(r,
246 "void main() { bool x = 1 || 2.0; }",
247 "error: 1: type mismatch: '||' cannot operate on 'int', 'float'\n1 error\n");
248 }
249
DEF_TEST(SkSLCallNonFunction,r)250 DEF_TEST(SkSLCallNonFunction, r) {
251 test_failure(r,
252 "void main() { float x = 3; x(); }",
253 "error: 1: 'x' is not a function\n1 error\n");
254 }
255
DEF_TEST(SkSLInvalidUnary,r)256 DEF_TEST(SkSLInvalidUnary, r) {
257 test_failure(r,
258 "void main() { mat4 x = mat4(1); ++x; }",
259 "error: 1: '++' cannot operate on 'mat4'\n1 error\n");
260 test_failure(r,
261 "void main() { vec3 x = vec3(1); --x; }",
262 "error: 1: '--' cannot operate on 'vec3'\n1 error\n");
263 test_failure(r,
264 "void main() { mat4 x = mat4(1); x++; }",
265 "error: 1: '++' cannot operate on 'mat4'\n1 error\n");
266 test_failure(r,
267 "void main() { vec3 x = vec3(1); x--; }",
268 "error: 1: '--' cannot operate on 'vec3'\n1 error\n");
269 test_failure(r,
270 "void main() { int x = !12; }",
271 "error: 1: '!' cannot operate on 'int'\n1 error\n");
272 test_failure(r,
273 "struct foo { } bar; void main() { foo x = +bar; }",
274 "error: 1: '+' cannot operate on 'foo'\n1 error\n");
275 test_failure(r,
276 "struct foo { } bar; void main() { foo x = -bar; }",
277 "error: 1: '-' cannot operate on 'foo'\n1 error\n");
278 test_success(r,
279 "void main() { vec2 x = vec2(1, 1); x = +x; x = -x; }");
280 }
281
DEF_TEST(SkSLInvalidAssignment,r)282 DEF_TEST(SkSLInvalidAssignment, r) {
283 test_failure(r,
284 "void main() { 1 = 2; }",
285 "error: 1: cannot assign to '1'\n1 error\n");
286 test_failure(r,
287 "uniform int x; void main() { x = 0; }",
288 "error: 1: cannot modify immutable variable 'x'\n1 error\n");
289 test_failure(r,
290 "const int x; void main() { x = 0; }",
291 "error: 1: cannot modify immutable variable 'x'\n1 error\n");
292 }
293
DEF_TEST(SkSLBadIndex,r)294 DEF_TEST(SkSLBadIndex, r) {
295 test_failure(r,
296 "void main() { int x = 2[0]; }",
297 "error: 1: expected array, but found 'int'\n1 error\n");
298 test_failure(r,
299 "void main() { vec2 x = vec2(0); int y = x[0][0]; }",
300 "error: 1: expected array, but found 'float'\n1 error\n");
301 }
302
DEF_TEST(SkSLTernaryMismatch,r)303 DEF_TEST(SkSLTernaryMismatch, r) {
304 test_failure(r,
305 "void main() { int x = 5 > 2 ? true : 1.0; }",
306 "error: 1: ternary operator result mismatch: 'bool', 'float'\n1 error\n");
307 test_failure(r,
308 "void main() { int x = 5 > 2 ? vec3(1) : 1.0; }",
309 "error: 1: ternary operator result mismatch: 'vec3', 'float'\n1 error\n");
310 }
311
DEF_TEST(SkSLInterfaceBlockStorageModifiers,r)312 DEF_TEST(SkSLInterfaceBlockStorageModifiers, r) {
313 test_failure(r,
314 "uniform foo { out int x; };",
315 "error: 1: interface block fields may not have storage qualifiers\n1 error\n");
316 }
317
DEF_TEST(SkSLUseWithoutInitialize,r)318 DEF_TEST(SkSLUseWithoutInitialize, r) {
319 test_failure(r,
320 "void main() { int x; if (5 == 2) x = 3; x++; }",
321 "error: 1: 'x' has not been assigned\n1 error\n");
322 test_failure(r,
323 "void main() { int x[2][2]; int i; x[i][1] = 4; }",
324 "error: 1: 'i' has not been assigned\n1 error\n");
325 test_failure(r,
326 "int main() { int r; return r; }",
327 "error: 1: 'r' has not been assigned\n1 error\n");
328 test_failure(r,
329 "void main() { int x; int y = x; }",
330 "error: 1: 'x' has not been assigned\n1 error\n");
331 test_failure(r,
332 "void main() { bool x; if (true && (false || x)) return; }",
333 "error: 1: 'x' has not been assigned\n1 error\n");
334 test_failure(r,
335 "void main() { int x; switch (3) { case 0: x = 0; case 1: x = 1; }"
336 "sk_FragColor = vec4(x); }",
337 "error: 1: 'x' has not been assigned\n1 error\n");
338 }
339
DEF_TEST(SkSLUnreachable,r)340 DEF_TEST(SkSLUnreachable, r) {
341 test_failure(r,
342 "void main() { return; return; }",
343 "error: 1: unreachable\n1 error\n");
344 test_failure(r,
345 "void main() { for (;;) { continue; int x = 1; } }",
346 "error: 1: unreachable\n1 error\n");
347 /* test_failure(r,
348 "void main() { for (;;) { } return; }",
349 "error: 1: unreachable\n1 error\n");*/
350 test_failure(r,
351 "void main() { if (true) return; else discard; return; }",
352 "error: 1: unreachable\n1 error\n");
353 test_failure(r,
354 "void main() { return; while (true); }",
355 "error: 1: unreachable\n1 error\n");
356 }
357
DEF_TEST(SkSLNoReturn,r)358 DEF_TEST(SkSLNoReturn, r) {
359 test_failure(r,
360 "int foo() { if (2 > 5) return 3; }",
361 "error: 1: function can exit without returning a value\n1 error\n");
362 }
363
DEF_TEST(SkSLBreakOutsideLoop,r)364 DEF_TEST(SkSLBreakOutsideLoop, r) {
365 test_failure(r,
366 "void foo() { while(true) {} if (true) break; }",
367 "error: 1: break statement must be inside a loop or switch\n1 error\n");
368 }
369
DEF_TEST(SkSLContinueOutsideLoop,r)370 DEF_TEST(SkSLContinueOutsideLoop, r) {
371 test_failure(r,
372 "void foo() { for(;;); continue; }",
373 "error: 1: continue statement must be inside a loop\n1 error\n");
374 test_failure(r,
375 "void foo() { switch (1) { default: continue; } }",
376 "error: 1: continue statement must be inside a loop\n1 error\n");
377 }
378
DEF_TEST(SkSLStaticIfError,r)379 DEF_TEST(SkSLStaticIfError, r) {
380 // ensure eliminated branch of static if / ternary is still checked for errors
381 test_failure(r,
382 "void foo() { if (true); else x = 5; }",
383 "error: 1: unknown identifier 'x'\n1 error\n");
384 test_failure(r,
385 "void foo() { if (false) x = 5; }",
386 "error: 1: unknown identifier 'x'\n1 error\n");
387 test_failure(r,
388 "void foo() { true ? 5 : x; }",
389 "error: 1: unknown identifier 'x'\n1 error\n");
390 test_failure(r,
391 "void foo() { false ? x : 5; }",
392 "error: 1: unknown identifier 'x'\n1 error\n");
393 }
394
DEF_TEST(SkSLBadCap,r)395 DEF_TEST(SkSLBadCap, r) {
396 test_failure(r,
397 "bool b = sk_Caps.bugFreeDriver;",
398 "error: 1: unknown capability flag 'bugFreeDriver'\n1 error\n");
399 }
400
DEF_TEST(SkSLDivByZero,r)401 DEF_TEST(SkSLDivByZero, r) {
402 test_failure(r,
403 "int x = 1 / 0;",
404 "error: 1: division by zero\n1 error\n");
405 test_failure(r,
406 "float x = 1 / 0;",
407 "error: 1: division by zero\n1 error\n");
408 test_failure(r,
409 "float x = 1.0 / 0.0;",
410 "error: 1: division by zero\n1 error\n");
411 test_failure(r,
412 "float x = -67.0 / (3.0 - 3);",
413 "error: 1: division by zero\n1 error\n");
414 }
415
DEF_TEST(SkSLUnsupportedGLSLIdentifiers,r)416 DEF_TEST(SkSLUnsupportedGLSLIdentifiers, r) {
417 test_failure(r,
418 "void main() { float x = gl_FragCoord.x; };",
419 "error: 1: unknown identifier 'gl_FragCoord'\n1 error\n");
420 test_failure(r,
421 "void main() { float r = gl_FragColor.r; };",
422 "error: 1: unknown identifier 'gl_FragColor'\n1 error\n");
423 }
424
DEF_TEST(SkSLWrongSwitchTypes,r)425 DEF_TEST(SkSLWrongSwitchTypes, r) {
426 test_failure(r,
427 "void main() { switch (vec2(1)) { case 1: break; } }",
428 "error: 1: expected 'int', but found 'vec2'\n1 error\n");
429 test_failure(r,
430 "void main() { switch (1) { case vec2(1): break; } }",
431 "error: 1: expected 'int', but found 'vec2'\n1 error\n");
432 }
433
DEF_TEST(SkSLNonConstantCase,r)434 DEF_TEST(SkSLNonConstantCase, r) {
435 test_failure(r,
436 "void main() { int x = 1; switch (1) { case x: break; } }",
437 "error: 1: case value must be a constant\n1 error\n");
438 }
439
DEF_TEST(SkSLDuplicateCase,r)440 DEF_TEST(SkSLDuplicateCase, r) {
441 test_failure(r,
442 "void main() { switch (1) { case 0: case 1: case 0: break; } }",
443 "error: 1: duplicate case value\n1 error\n");
444 }
445
DEF_TEST(SkSLFieldAfterRuntimeArray,r)446 DEF_TEST(SkSLFieldAfterRuntimeArray, r) {
447 test_failure(r,
448 "buffer broken { float x[]; float y; };",
449 "error: 1: only the last entry in an interface block may be a runtime-sized "
450 "array\n1 error\n");
451 }
452
DEF_TEST(SkSLStaticIf,r)453 DEF_TEST(SkSLStaticIf, r) {
454 test_success(r,
455 "void main() { float x = 5; float y = 10;"
456 "@if (x < y) { sk_FragColor = vec4(1); } }");
457 test_failure(r,
458 "void main() { float x = sqrt(25); float y = 10;"
459 "@if (x < y) { sk_FragColor = vec4(1); } }",
460 "error: 1: static if has non-static test\n1 error\n");
461 }
462
DEF_TEST(SkSLStaticSwitch,r)463 DEF_TEST(SkSLStaticSwitch, r) {
464 test_success(r,
465 "void main() {"
466 "int x = 1;"
467 "@switch (x) {"
468 "case 1: sk_FragColor = vec4(1); break;"
469 "default: sk_FragColor = vec4(0);"
470 "}"
471 "}");
472 test_failure(r,
473 "void main() {"
474 "int x = int(sqrt(1));"
475 "@switch (x) {"
476 "case 1: sk_FragColor = vec4(1); break;"
477 "default: sk_FragColor = vec4(0);"
478 "}"
479 "}",
480 "error: 1: static switch has non-static test\n1 error\n");
481 test_failure(r,
482 "void main() {"
483 "int x = 1;"
484 "@switch (x) {"
485 "case 1: sk_FragColor = vec4(1); if (sqrt(0) < sqrt(1)) break;"
486 "default: sk_FragColor = vec4(0);"
487 "}"
488 "}",
489 "error: 1: static switch contains non-static conditional break\n1 error\n");
490 }
491
492 #endif
493