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 "src/sksl/SkSLCompiler.h"
9
10 #include "tests/Test.h"
11
12 // Note that the optimizer will aggressively kill dead code and substitute constants in place of
13 // variables, so we have to jump through a few hoops to ensure that the code in these tests has the
14 // necessary side-effects to remain live. In some cases we rely on the optimizer not (yet) being
15 // smart enough to optimize around certain constructs; as the optimizer gets smarter it will
16 // undoubtedly end up breaking some of these tests. That is a good thing, as long as the new code is
17 // equivalent!
18
test(skiatest::Reporter * r,const char * src,const SkSL::Program::Settings & settings,const char * expected,SkSL::Program::Inputs * inputs,SkSL::Program::Kind kind=SkSL::Program::kFragment_Kind)19 static void test(skiatest::Reporter* r, const char* src, const SkSL::Program::Settings& settings,
20 const char* expected, SkSL::Program::Inputs* inputs,
21 SkSL::Program::Kind kind = SkSL::Program::kFragment_Kind) {
22 SkSL::Compiler compiler;
23 SkSL::String output;
24 std::unique_ptr<SkSL::Program> program = compiler.convertProgram(kind, SkSL::String(src),
25 settings);
26 if (!program) {
27 SkDebugf("Unexpected error compiling %s\n%s", src, compiler.errorText().c_str());
28 }
29 REPORTER_ASSERT(r, program);
30 if (program) {
31 *inputs = program->fInputs;
32 REPORTER_ASSERT(r, compiler.toGLSL(*program, &output));
33 if (program) {
34 SkSL::String skExpected(expected);
35 if (output != skExpected) {
36 SkDebugf("GLSL MISMATCH:\nsource:\n%s\n\nexpected:\n'%s'\n\nreceived:\n'%s'", src,
37 expected, output.c_str());
38 }
39 REPORTER_ASSERT(r, output == skExpected);
40 }
41 }
42 }
43
test(skiatest::Reporter * r,const char * src,const GrShaderCaps & caps,const char * expected,SkSL::Program::Kind kind=SkSL::Program::kFragment_Kind)44 static void test(skiatest::Reporter* r, const char* src, const GrShaderCaps& caps,
45 const char* expected, SkSL::Program::Kind kind = SkSL::Program::kFragment_Kind) {
46 SkSL::Program::Settings settings;
47 settings.fCaps = ∩︀
48 SkSL::Program::Inputs inputs;
49 test(r, src, settings, expected, &inputs, kind);
50 }
51
DEF_TEST(SkSLHelloWorld,r)52 DEF_TEST(SkSLHelloWorld, r) {
53 test(r,
54 "void main() { sk_FragColor = half4(0.75); }",
55 *SkSL::ShaderCapsFactory::Default(),
56 "#version 400\n"
57 "out vec4 sk_FragColor;\n"
58 "void main() {\n"
59 " sk_FragColor = vec4(0.75);\n"
60 "}\n");
61 }
62
DEF_TEST(SkSLControl,r)63 DEF_TEST(SkSLControl, r) {
64 test(r,
65 "void main() {"
66 "if (sqrt(2) > 5) { sk_FragColor = half4(0.75); } else { discard; }"
67 "int i = 0;"
68 "while (i < 10) { sk_FragColor *= 0.5; i++; }"
69 "do { sk_FragColor += 0.25; } while (sk_FragColor.x < 0.75);"
70 "for (int i = 0; i < 10; i++) {"
71 "if (i % 2 == 1) break; else continue;"
72 "}"
73 "return;"
74 "}",
75 *SkSL::ShaderCapsFactory::Default(),
76 "#version 400\n"
77 "out vec4 sk_FragColor;\n"
78 "void main() {\n"
79 " if (sqrt(2.0) > 5.0) {\n"
80 " sk_FragColor = vec4(0.75);\n"
81 " } else {\n"
82 " discard;\n"
83 " }\n"
84 " int i = 0;\n"
85 " while (i < 10) {\n"
86 " sk_FragColor *= 0.5;\n"
87 " i++;\n"
88 " }\n"
89 " do {\n"
90 " sk_FragColor += 0.25;\n"
91 " } while (sk_FragColor.x < 0.75);\n"
92 " for (int i = 0;i < 10; i++) {\n"
93 " if (i % 2 == 1) break; else continue;\n"
94 " }\n"
95 " return;\n"
96 "}\n");
97 }
98
DEF_TEST(SkSLFunctions,r)99 DEF_TEST(SkSLFunctions, r) {
100 test(r,
101 "float foo(float v[2]) { return v[0] * v[1]; }"
102 "void bar(inout float x) { float y[2], z; y[0] = x; y[1] = x * 2; z = foo(y); x = z; }"
103 "void main() { float x = 10; bar(x); sk_FragColor = half4(half(x)); }",
104 *SkSL::ShaderCapsFactory::Default(),
105 "#version 400\n"
106 "out vec4 sk_FragColor;\n"
107 "float foo(float v[2]) {\n"
108 " return v[0] * v[1];\n"
109 "}\n"
110 "void bar(inout float x) {\n"
111 " float y[2], z;\n"
112 " y[0] = x;\n"
113 " y[1] = x * 2.0;\n"
114 " z = foo(y);\n"
115 " x = z;\n"
116 "}\n"
117 "void main() {\n"
118 " float x = 10.0;\n"
119 " bar(x);\n"
120 " sk_FragColor = vec4(x);\n"
121 "}\n");
122 }
123
DEF_TEST(SkSLOperators,r)124 DEF_TEST(SkSLOperators, r) {
125 test(r,
126 "void main() {"
127 "float x = 1, y = 2;"
128 "int z = 3;"
129 "x = x - x + y * z * x * (y - z);"
130 "y = x / y / z;"
131 "z = (z / 2 % 3 << 4) >> 2 << 1;"
132 "bool b = (x > 4) == x < 2 || 2 >= sqrt(2) && y <= z;"
133 "x += 12;"
134 "x -= 12;"
135 "x *= y /= z = 10;"
136 "b ||= false;"
137 "b &&= true;"
138 "b ^^= false;"
139 "z |= 0;"
140 "z &= -1;"
141 "z ^= 0;"
142 "z >>= 2;"
143 "z <<= 4;"
144 "z %= 5;"
145 "x = (float2(sqrt(1)) , 6);"
146 "z = (float2(sqrt(1)) , 6);"
147 "}",
148 *SkSL::ShaderCapsFactory::Default(),
149 "#version 400\n"
150 "void main() {\n"
151 " float x = 1.0, y = 2.0;\n"
152 " int z = 3;\n"
153 " x = -6.0;\n"
154 " y = -1.0;\n"
155 " z = 8;\n"
156 " bool b = false == true || 2.0 >= sqrt(2.0);\n"
157 " x += 12.0;\n"
158 " x -= 12.0;\n"
159 " x *= (y /= float(z = 10));\n"
160 " b ||= false;\n"
161 " b &&= true;\n"
162 " b ^^= false;\n"
163 " z |= 0;\n"
164 " z &= -1;\n"
165 " z ^= 0;\n"
166 " z >>= 2;\n"
167 " z <<= 4;\n"
168 " z %= 5;\n"
169 " x = float((vec2(sqrt(1.0)) , 6));\n"
170 " z = (vec2(sqrt(1.0)) , 6);\n"
171 "}\n");
172 }
173
DEF_TEST(SkSLMatrices,r)174 DEF_TEST(SkSLMatrices, r) {
175 test(r,
176 "void main() {"
177 "float2x4 x = float2x4(1);"
178 "float3x2 y = float3x2(1, 0, 0, 1, float2(2, 2));"
179 "float3x4 z = x * y;"
180 "float3 v1 = float3x3(1) * float3(2);"
181 "float3 v2 = float3(2) * float3x3(1);"
182 "sk_FragColor = half4(half(z[0].x), half3(v1 + v2));"
183 "}",
184 *SkSL::ShaderCapsFactory::Default(),
185 "#version 400\n"
186 "out vec4 sk_FragColor;\n"
187 "void main() {\n"
188 " mat3x4 z = mat2x4(1.0) * mat3x2(1.0, 0.0, 0.0, 1.0, vec2(2.0, 2.0));\n"
189 " vec3 v1 = mat3(1.0) * vec3(2.0);\n"
190 " vec3 v2 = vec3(2.0) * mat3(1.0);\n"
191 " sk_FragColor = vec4(z[0].x, v1 + v2);\n"
192 "}\n");
193 }
194
DEF_TEST(SkSLInterfaceBlock,r)195 DEF_TEST(SkSLInterfaceBlock, r) {
196 test(r,
197 "uniform testBlock {"
198 "half x;"
199 "half y[2];"
200 "layout(binding=12) half3x2 z;"
201 "bool w;"
202 "};"
203 "void main() {"
204 " sk_FragColor = half4(x, y[0], y[1], 0);"
205 "}",
206 *SkSL::ShaderCapsFactory::Default(),
207 "#version 400\n"
208 "out vec4 sk_FragColor;\n"
209 "uniform testBlock {\n"
210 " float x;\n"
211 " float[2] y;\n"
212 " layout (binding = 12) mat3x2 z;\n"
213 " bool w;\n"
214 "};\n"
215 "void main() {\n"
216 " sk_FragColor = vec4(x, y[0], y[1], 0.0);\n"
217 "}\n");
218 test(r,
219 "uniform testBlock {"
220 "float x;"
221 "} test;"
222 "void main() {"
223 " sk_FragColor = half4(half(test.x));"
224 "}",
225 *SkSL::ShaderCapsFactory::Default(),
226 "#version 400\n"
227 "out vec4 sk_FragColor;\n"
228 "uniform testBlock {\n"
229 " float x;\n"
230 "} test;\n"
231 "void main() {\n"
232 " sk_FragColor = vec4(test.x);\n"
233 "}\n");
234 test(r,
235 "uniform testBlock {"
236 "float x;"
237 "} test[2];"
238 "void main() {"
239 " sk_FragColor = half4(half(test[1].x));"
240 "}",
241 *SkSL::ShaderCapsFactory::Default(),
242 "#version 400\n"
243 "out vec4 sk_FragColor;\n"
244 "uniform testBlock {\n"
245 " float x;\n"
246 "} test[2];\n"
247 "void main() {\n"
248 " sk_FragColor = vec4(test[1].x);\n"
249 "}\n");
250 }
251
DEF_TEST(SkSLStructs,r)252 DEF_TEST(SkSLStructs, r) {
253 test(r,
254 "struct A {"
255 "int x;"
256 "int y;"
257 "} a1, a2;"
258 "A a3;"
259 "struct B {"
260 "float x;"
261 "float y[2];"
262 "layout(binding=1) A z;"
263 "};"
264 "B b1, b2, b3;"
265 "void main() {"
266 " a1.x = 0;"
267 " b1.x = 0;"
268 " sk_FragColor.r = half(a1.x + b1.x);"
269 "}",
270 *SkSL::ShaderCapsFactory::Default(),
271 "#version 400\n"
272 "out vec4 sk_FragColor;\n"
273 "struct A {\n"
274 " int x;\n"
275 " int y;\n"
276 "} a1;\n"
277 "struct B {\n"
278 " float x;\n"
279 " float[2] y;\n"
280 " layout (binding = 1) A z;\n"
281 "} b1;\n"
282 "void main() {\n"
283 " a1.x = 0;\n"
284 " b1.x = 0.0;\n"
285 " sk_FragColor.x = float(a1.x) + b1.x;\n"
286 "}\n");
287 }
288
DEF_TEST(SkSLVersion,r)289 DEF_TEST(SkSLVersion, r) {
290 test(r,
291 "in float test; void main() { sk_FragColor.r = half(test); }",
292 *SkSL::ShaderCapsFactory::Version450Core(),
293 "#version 450 core\n"
294 "out vec4 sk_FragColor;\n"
295 "in float test;\n"
296 "void main() {\n"
297 " sk_FragColor.x = test;\n"
298 "}\n");
299 test(r,
300 "in float test; void main() { sk_FragColor.r = half(test); }",
301 *SkSL::ShaderCapsFactory::Version110(),
302 "#version 110\n"
303 "varying float test;\n"
304 "void main() {\n"
305 " gl_FragColor.x = test;\n"
306 "}\n");
307 }
308
DEF_TEST(SkSLUsesPrecisionModifiers,r)309 DEF_TEST(SkSLUsesPrecisionModifiers, r) {
310 test(r,
311 "void main() { half x = 0.75; float y = 1; x++; y++;"
312 "sk_FragColor.rg = half2(x, half(y)); }",
313 *SkSL::ShaderCapsFactory::Default(),
314 "#version 400\n"
315 "out vec4 sk_FragColor;\n"
316 "void main() {\n"
317 " float x = 0.75;\n"
318 " float y = 1.0;\n"
319 " x++;\n"
320 " y++;\n"
321 " sk_FragColor.xy = vec2(x, y);\n"
322 "}\n");
323 test(r,
324 "void main() { half x = 0.75; float y = 1; x++; y++;"
325 "sk_FragColor.rg = half2(x, half(y)); }",
326 *SkSL::ShaderCapsFactory::UsesPrecisionModifiers(),
327 "#version 400\n"
328 "precision mediump float;\n"
329 "precision mediump sampler2D;\n"
330 "out mediump vec4 sk_FragColor;\n"
331 "void main() {\n"
332 " mediump float x = 0.75;\n"
333 " highp float y = 1.0;\n"
334 " x++;\n"
335 " y++;\n"
336 " sk_FragColor.xy = vec2(x, y);\n"
337 "}\n");
338 }
339
DEF_TEST(SkSLMinAbs,r)340 DEF_TEST(SkSLMinAbs, r) {
341 test(r,
342 "void main() {"
343 "half x = -5;"
344 "sk_FragColor.r = min(abs(x), 6);"
345 "}",
346 *SkSL::ShaderCapsFactory::Default(),
347 "#version 400\n"
348 "out vec4 sk_FragColor;\n"
349 "void main() {\n"
350 " sk_FragColor.x = min(abs(-5.0), 6.0);\n"
351 "}\n");
352
353 test(r,
354 "void main() {"
355 "half x = -5.0;"
356 "sk_FragColor.r = min(abs(x), 6.0);"
357 "}",
358 *SkSL::ShaderCapsFactory::CannotUseMinAndAbsTogether(),
359 "#version 400\n"
360 "out vec4 sk_FragColor;\n"
361 "void main() {\n"
362 " float minAbsHackVar0;\n"
363 " float minAbsHackVar1;\n"
364 " sk_FragColor.x = ((minAbsHackVar0 = abs(-5.0)) < (minAbsHackVar1 = 6.0) ? "
365 "minAbsHackVar0 : minAbsHackVar1);\n"
366 "}\n");
367 }
368
DEF_TEST(SkSLFractNegative,r)369 DEF_TEST(SkSLFractNegative, r) {
370 static constexpr char input[] =
371 "void main() {"
372 "float x = -42.0;"
373 "sk_FragColor.r = half(fract(x));"
374 "}";
375 static constexpr char output_default[] =
376 "#version 400\n"
377 "out vec4 sk_FragColor;\n"
378 "void main() {\n"
379 " sk_FragColor.x = fract(-42.0);\n"
380 "}\n";
381 static constexpr char output_workaround[] =
382 "#version 400\n"
383 "out vec4 sk_FragColor;\n"
384 "void main() {\n"
385 " sk_FragColor.x = (0.5 - sign(-42.0) * (0.5 - fract(abs(-42.0))));\n"
386 "}\n";
387
388 test(r, input, *SkSL::ShaderCapsFactory::Default(), output_default);
389 test(r, input, *SkSL::ShaderCapsFactory::CannotUseFractForNegativeValues(), output_workaround);
390 }
391
DEF_TEST(SkSLNegatedAtan,r)392 DEF_TEST(SkSLNegatedAtan, r) {
393 test(r,
394 "void main() { float2 x = float2(sqrt(2)); sk_FragColor.r = half(atan(x.x, -x.y)); }",
395 *SkSL::ShaderCapsFactory::Default(),
396 "#version 400\n"
397 "out vec4 sk_FragColor;\n"
398 "void main() {\n"
399 " vec2 x = vec2(sqrt(2.0));\n"
400 " sk_FragColor.x = atan(x.x, -x.y);\n"
401 "}\n");
402 test(r,
403 "void main() { float2 x = float2(sqrt(2)); sk_FragColor.r = half(atan(x.x, -x.y)); }",
404 *SkSL::ShaderCapsFactory::MustForceNegatedAtanParamToFloat(),
405 "#version 400\n"
406 "out vec4 sk_FragColor;\n"
407 "void main() {\n"
408 " vec2 x = vec2(sqrt(2.0));\n"
409 " sk_FragColor.x = atan(x.x, -1.0 * x.y);\n"
410 "}\n");
411 }
412
DEF_TEST(SkSLModifiersDeclaration,r)413 DEF_TEST(SkSLModifiersDeclaration, r) {
414 test(r,
415 "layout(blend_support_all_equations) out;"
416 "layout(blend_support_all_equations) out;"
417 "layout(blend_support_multiply) out;"
418 "layout(blend_support_screen) out;"
419 "layout(blend_support_overlay) out;"
420 "layout(blend_support_darken) out;"
421 "layout(blend_support_lighten) out;"
422 "layout(blend_support_colordodge) out;"
423 "layout(blend_support_colorburn) out;"
424 "layout(blend_support_hardlight) out;"
425 "layout(blend_support_softlight) out;"
426 "layout(blend_support_difference) out;"
427 "layout(blend_support_exclusion) out;"
428 "layout(blend_support_hsl_hue) out;"
429 "layout(blend_support_hsl_saturation) out;"
430 "layout(blend_support_hsl_color) out;"
431 "layout(blend_support_hsl_luminosity) out;"
432 "void main() { }",
433 *SkSL::ShaderCapsFactory::Default(),
434 "#version 400\n"
435 "layout (blend_support_all_equations) out ;\n"
436 "layout (blend_support_all_equations) out ;\n"
437 "layout (blend_support_multiply) out ;\n"
438 "layout (blend_support_screen) out ;\n"
439 "layout (blend_support_overlay) out ;\n"
440 "layout (blend_support_darken) out ;\n"
441 "layout (blend_support_lighten) out ;\n"
442 "layout (blend_support_colordodge) out ;\n"
443 "layout (blend_support_colorburn) out ;\n"
444 "layout (blend_support_hardlight) out ;\n"
445 "layout (blend_support_softlight) out ;\n"
446 "layout (blend_support_difference) out ;\n"
447 "layout (blend_support_exclusion) out ;\n"
448 "layout (blend_support_hsl_hue) out ;\n"
449 "layout (blend_support_hsl_saturation) out ;\n"
450 "layout (blend_support_hsl_color) out ;\n"
451 "layout (blend_support_hsl_luminosity) out ;\n"
452 "void main() {\n"
453 "}\n");
454 }
455
DEF_TEST(SkSLHex,r)456 DEF_TEST(SkSLHex, r) {
457 test(r,
458 "void main() {"
459 "int i1 = 0x0;"
460 "i1++;"
461 "int i2 = 0x1234abcd;"
462 "i2++;"
463 "int i3 = 0x7fffffff;"
464 "i3++;"
465 "int i4 = 0xffffffff;"
466 "i4++;"
467 "int i5 = -0xbeef;"
468 "i5++;"
469 "uint u1 = 0x0;"
470 "u1++;"
471 "uint u2 = 0x1234abcd;"
472 "u2++;"
473 "uint u3 = 0x7fffffff;"
474 "u3++;"
475 "uint u4 = 0xffffffff;"
476 "u4++;"
477 "ushort u5 = 0xffff;"
478 "u5++;"
479 "}",
480 *SkSL::ShaderCapsFactory::Default(),
481 "#version 400\n"
482 "void main() {\n"
483 " int i1 = 0;\n"
484 " i1++;\n"
485 " int i2 = 305441741;\n"
486 " i2++;\n"
487 " int i3 = 2147483647;\n"
488 " i3++;\n"
489 " int i4 = -1;\n"
490 " i4++;\n"
491 " int i5 = -48879;\n"
492 " i5++;\n"
493 " uint u1 = 0u;\n"
494 " u1++;\n"
495 " uint u2 = 305441741u;\n"
496 " u2++;\n"
497 " uint u3 = 2147483647u;\n"
498 " u3++;\n"
499 " uint u4 = 4294967295u;\n"
500 " u4++;\n"
501 " uint u5 = 65535u;\n"
502 " u5++;\n"
503 "}\n");
504 }
505
DEF_TEST(SkSLVectorConstructors,r)506 DEF_TEST(SkSLVectorConstructors, r) {
507 test(r,
508 "float2 v1 = float2(1);"
509 "float2 v2 = float2(1, 2);"
510 "float2 v3 = float2(float2(1));"
511 "float3 v4 = float3(float2(1), 1.0);"
512 "int2 v5 = int2(1);"
513 "int2 v6 = int2(float2(1, 2));"
514 "float2 v7 = float2(int2(1, 2));"
515 "void main() {"
516 "sk_FragColor.r = half(v1.x + v2.x + v3.x + v4.x + v5.x + v6.x + v7.x);"
517 "}",
518 *SkSL::ShaderCapsFactory::Default(),
519 "#version 400\n"
520 "out vec4 sk_FragColor;\n"
521 "vec2 v1 = vec2(1.0);\n"
522 "vec2 v2 = vec2(1.0, 2.0);\n"
523 "vec2 v3 = vec2(1.0);\n"
524 "vec3 v4 = vec3(vec2(1.0), 1.0);\n"
525 "ivec2 v5 = ivec2(1);\n"
526 "ivec2 v6 = ivec2(vec2(1.0, 2.0));\n"
527 "vec2 v7 = vec2(ivec2(1, 2));\n"
528 "void main() {\n"
529 " sk_FragColor.x = (((((v1.x + v2.x) + v3.x) + v4.x) + float(v5.x)) + float(v6.x)) + "
530 "v7.x;\n"
531 "}\n");
532 }
533
DEF_TEST(SkSLArrayConstructors,r)534 DEF_TEST(SkSLArrayConstructors, r) {
535 test(r,
536 "float test1[] = float[](1, 2, 3, 4);"
537 "float2 test2[] = float2[](float2(1, 2), float2(3, 4));"
538 "float4x4 test3[] = float4x4[]();"
539 "void main() {"
540 "sk_FragColor.r = half(test1[0] + test2[0].x + test3[0][0][0]);"
541 "}",
542 *SkSL::ShaderCapsFactory::Default(),
543 "#version 400\n"
544 "out vec4 sk_FragColor;\n"
545 "float test1[] = float[](1.0, 2.0, 3.0, 4.0);\n"
546 "vec2 test2[] = vec2[](vec2(1.0, 2.0), vec2(3.0, 4.0));\n"
547 "mat4 test3[] = mat4[]();\n"
548 "void main() {\n"
549 " sk_FragColor.x = (test1[0] + test2[0].x) + test3[0][0][0];\n"
550 "}\n");
551 }
552
DEF_TEST(SkSLConstArray,r)553 DEF_TEST(SkSLConstArray, r) {
554 test(r,
555 "const half test[] = half[](1, 2, 3, 4);"
556 "void main() {"
557 "sk_FragColor = half4(test[0], test[1], test[2], test[3]);"
558 "}",
559 *SkSL::ShaderCapsFactory::Default(),
560 "#version 400\n"
561 "out vec4 sk_FragColor;\n"
562 "const float test[] = float[](1.0, 2.0, 3.0, 4.0);\n"
563 "void main() {\n"
564 " sk_FragColor = vec4(test[0], test[1], test[2], test[3]);\n"
565 "}\n");
566 }
567
DEF_TEST(SkSLDerivatives,r)568 DEF_TEST(SkSLDerivatives, r) {
569 test(r,
570 "void main() { sk_FragColor.r = half(dFdx(1)); }",
571 *SkSL::ShaderCapsFactory::Default(),
572 "#version 400\n"
573 "out vec4 sk_FragColor;\n"
574 "void main() {\n"
575 " sk_FragColor.x = dFdx(1.0);\n"
576 "}\n");
577 test(r,
578 "void main() { sk_FragColor.r = 1; }",
579 *SkSL::ShaderCapsFactory::ShaderDerivativeExtensionString(),
580 "#version 400\n"
581 "precision mediump float;\n"
582 "precision mediump sampler2D;\n"
583 "out mediump vec4 sk_FragColor;\n"
584 "void main() {\n"
585 " sk_FragColor.x = 1.0;\n"
586 "}\n");
587 test(r,
588 "void main() { sk_FragColor.r = half(dFdx(1)); }",
589 *SkSL::ShaderCapsFactory::ShaderDerivativeExtensionString(),
590 "#version 400\n"
591 "#extension GL_OES_standard_derivatives : require\n"
592 "precision mediump float;\n"
593 "precision mediump sampler2D;\n"
594 "out mediump vec4 sk_FragColor;\n"
595 "void main() {\n"
596 " sk_FragColor.x = dFdx(1.0);\n"
597 "}\n");
598
599 SkSL::Program::Settings settings;
600 settings.fFlipY = false;
601 auto caps = SkSL::ShaderCapsFactory::Default();
602 settings.fCaps = caps.get();
603 SkSL::Program::Inputs inputs;
604 test(r,
605 "void main() { sk_FragColor.r = half(dFdx(1)), sk_FragColor.g = half(dFdy(1)); }",
606 settings,
607 "#version 400\n"
608 "out vec4 sk_FragColor;\n"
609 "void main() {\n"
610 " (sk_FragColor.x = dFdx(1.0) , sk_FragColor.y = dFdy(1.0));\n"
611 "}\n",
612 &inputs);
613 settings.fFlipY = true;
614 test(r,
615 "void main() { sk_FragColor.r = half(dFdx(1)), sk_FragColor.g = half(dFdy(1)); }",
616 settings,
617 "#version 400\n"
618 "out vec4 sk_FragColor;\n"
619 "void main() {\n"
620 " (sk_FragColor.x = dFdx(1.0) , sk_FragColor.y = -dFdy(1.0));\n"
621 "}\n",
622 &inputs);
623 }
624
625
DEF_TEST(SkSLIntFolding,r)626 DEF_TEST(SkSLIntFolding, r) {
627 test(r,
628 "void main() {"
629 "sk_FragColor.r = 32 + 2;"
630 "sk_FragColor.r = 32 - 2;"
631 "sk_FragColor.r = 32 * 2;"
632 "sk_FragColor.r = 32 / 2;"
633 "sk_FragColor.r = 12 | 6;"
634 "sk_FragColor.r = 254 & 7;"
635 "sk_FragColor.r = 2 ^ 7;"
636 "sk_FragColor.r = 1 << 4;"
637 "sk_FragColor.r = 128 >> 2;"
638 "sk_FragColor.r = -1 == -1 ? 1 : -1;"
639 "sk_FragColor.r = -1 == -2 ? 2 : -2;"
640 "sk_FragColor.r = 0 != 1 ? 3 : -3;"
641 "sk_FragColor.r = 0 != 0 ? 4 : -4;"
642 "sk_FragColor.r = 6 > 5 ? 5 : -5;"
643 "sk_FragColor.r = 6 > 6 ? 6 : -6;"
644 "sk_FragColor.r = -1 < 0 ? 7 : -7;"
645 "sk_FragColor.r = 1 < 0 ? 8 : -8;"
646 "sk_FragColor.r = 6 >= 6 ? 9 : -9;"
647 "sk_FragColor.r = 6 >= 7 ? 10 : -10;"
648 "sk_FragColor.r = 6 <= 6 ? 11 : -11;"
649 "sk_FragColor.r = 6 <= 5 ? 12 : -12;"
650 "sk_FragColor.r = int(sqrt(1)) + 0;"
651 "sk_FragColor.r = 0 + int(sqrt(2));"
652 "sk_FragColor.r = int(sqrt(3)) - 0;"
653 "sk_FragColor.r = int(sqrt(4)) * 0;"
654 "sk_FragColor.r = int(sqrt(5)) * 1;"
655 "sk_FragColor.r = 1 * int(sqrt(6));"
656 "sk_FragColor.r = 0 * int(sqrt(7));"
657 "sk_FragColor.r = int(sqrt(8)) / 1;"
658 "sk_FragColor.r = 0 / int(sqrt(9));"
659 "int x = int(sqrt(2));"
660 "x += 1;"
661 "x += 0;"
662 "x -= 1;"
663 "x -= 0;"
664 "x *= 1;"
665 "x *= 2;"
666 "x /= 1;"
667 "x /= 2;"
668 "sk_FragColor.r = x;"
669 "}",
670 *SkSL::ShaderCapsFactory::Default(),
671 "#version 400\n"
672 "out vec4 sk_FragColor;\n"
673 "void main() {\n"
674 " sk_FragColor.x = 34.0;\n"
675 " sk_FragColor.x = 30.0;\n"
676 " sk_FragColor.x = 64.0;\n"
677 " sk_FragColor.x = 16.0;\n"
678 " sk_FragColor.x = 14.0;\n"
679 " sk_FragColor.x = 6.0;\n"
680 " sk_FragColor.x = 5.0;\n"
681 " sk_FragColor.x = 16.0;\n"
682 " sk_FragColor.x = 32.0;\n"
683 " sk_FragColor.x = 1.0;\n"
684 " sk_FragColor.x = -2.0;\n"
685 " sk_FragColor.x = 3.0;\n"
686 " sk_FragColor.x = -4.0;\n"
687 " sk_FragColor.x = 5.0;\n"
688 " sk_FragColor.x = -6.0;\n"
689 " sk_FragColor.x = 7.0;\n"
690 " sk_FragColor.x = -8.0;\n"
691 " sk_FragColor.x = 9.0;\n"
692 " sk_FragColor.x = -10.0;\n"
693 " sk_FragColor.x = 11.0;\n"
694 " sk_FragColor.x = -12.0;\n"
695 " sk_FragColor.x = float(int(sqrt(1.0)));\n"
696 " sk_FragColor.x = float(int(sqrt(2.0)));\n"
697 " sk_FragColor.x = float(int(sqrt(3.0)));\n"
698 " sk_FragColor.x = 0.0;\n"
699 " sk_FragColor.x = float(int(sqrt(5.0)));\n"
700 " sk_FragColor.x = float(int(sqrt(6.0)));\n"
701 " sk_FragColor.x = 0.0;\n"
702 " sk_FragColor.x = float(int(sqrt(8.0)));\n"
703 " sk_FragColor.x = 0.0;\n"
704 " int x = int(sqrt(2.0));\n"
705 " x += 1;\n"
706 " x -= 1;\n"
707 " x *= 2;\n"
708 " x /= 2;\n"
709 " sk_FragColor.x = float(x);\n"
710 "}\n");
711 }
712
DEF_TEST(SkSLFloatFolding,r)713 DEF_TEST(SkSLFloatFolding, r) {
714 test(r,
715 "void main() {"
716 "sk_FragColor.r = 32.0 + 2.0;"
717 "sk_FragColor.r = 32.0 - 2.0;"
718 "sk_FragColor.r = 32.0 * 2.0;"
719 "sk_FragColor.r = 32.0 / 2.0;"
720 "sk_FragColor.r = (12 > 2.0) ? (10 * 2 / 5 + 18 - 3) : 0;"
721 "sk_FragColor.r = 0.0 == 0.0 ? 1 : -1;"
722 "sk_FragColor.r = 0.0 == 1.0 ? 2 : -2;"
723 "sk_FragColor.r = 0.0 != 1.0 ? 3 : -3;"
724 "sk_FragColor.r = 0.0 != 0.0 ? 4 : -4;"
725 "sk_FragColor.r = 6.0 > 5.0 ? 5 : -5;"
726 "sk_FragColor.r = 6.0 > 6.0 ? 6 : -6;"
727 "sk_FragColor.r = 6.0 >= 6.0 ? 7 : -7;"
728 "sk_FragColor.r = 6.0 >= 7.0 ? 8 : -8;"
729 "sk_FragColor.r = 5.0 < 6.0 ? 9 : -9;"
730 "sk_FragColor.r = 6.0 < 6.0 ? 10 : -10;"
731 "sk_FragColor.r = 6.0 <= 6.0 ? 11 : -11;"
732 "sk_FragColor.r = 6.0 <= 5.0 ? 12 : -12;"
733 "sk_FragColor.r = half(sqrt(1) + 0);"
734 "sk_FragColor.r = half(0 + sqrt(2));"
735 "sk_FragColor.r = half(sqrt(3) - 0);"
736 "sk_FragColor.r = half(sqrt(4) * 0);"
737 "sk_FragColor.r = half(sqrt(5) * 1);"
738 "sk_FragColor.r = half(1 * sqrt(6));"
739 "sk_FragColor.r = half(0 * sqrt(7));"
740 "sk_FragColor.r = half(sqrt(8) / 1);"
741 "sk_FragColor.r = half(0 / sqrt(9));"
742 "sk_FragColor.r += 1;"
743 "sk_FragColor.r += 0;"
744 "sk_FragColor.r -= 1;"
745 "sk_FragColor.r -= 0;"
746 "sk_FragColor.r *= 1;"
747 "sk_FragColor.r *= 2;"
748 "sk_FragColor.r /= 1;"
749 "sk_FragColor.r /= 2;"
750 "}",
751 *SkSL::ShaderCapsFactory::Default(),
752 "#version 400\n"
753 "out vec4 sk_FragColor;\n"
754 "void main() {\n"
755 " sk_FragColor.x = 34.0;\n"
756 " sk_FragColor.x = 30.0;\n"
757 " sk_FragColor.x = 64.0;\n"
758 " sk_FragColor.x = 16.0;\n"
759 " sk_FragColor.x = 19.0;\n"
760 " sk_FragColor.x = 1.0;\n"
761 " sk_FragColor.x = -2.0;\n"
762 " sk_FragColor.x = 3.0;\n"
763 " sk_FragColor.x = -4.0;\n"
764 " sk_FragColor.x = 5.0;\n"
765 " sk_FragColor.x = -6.0;\n"
766 " sk_FragColor.x = 7.0;\n"
767 " sk_FragColor.x = -8.0;\n"
768 " sk_FragColor.x = 9.0;\n"
769 " sk_FragColor.x = -10.0;\n"
770 " sk_FragColor.x = 11.0;\n"
771 " sk_FragColor.x = -12.0;\n"
772 " sk_FragColor.x = sqrt(1.0);\n"
773 " sk_FragColor.x = sqrt(2.0);\n"
774 " sk_FragColor.x = sqrt(3.0);\n"
775 " sk_FragColor.x = 0.0;\n"
776 " sk_FragColor.x = sqrt(5.0);\n"
777 " sk_FragColor.x = sqrt(6.0);\n"
778 " sk_FragColor.x = 0.0;\n"
779 " sk_FragColor.x = sqrt(8.0);\n"
780 " sk_FragColor.x = 0.0;\n"
781 " sk_FragColor.x += 1.0;\n"
782 " sk_FragColor.x -= 1.0;\n"
783 " sk_FragColor.x *= 2.0;\n"
784 " sk_FragColor.x /= 2.0;\n"
785 "}\n");
786 }
787
DEF_TEST(SkSLBoolFolding,r)788 DEF_TEST(SkSLBoolFolding, r) {
789 test(r,
790 "void main() {"
791 "sk_FragColor.r = 1 == 1 || 2 == 8 ? 1 : -1;"
792 "sk_FragColor.r = 1 > 1 || 2 == 8 ? 2 : -2;"
793 "sk_FragColor.r = 1 == 1 && 2 <= 8 ? 3 : -3;"
794 "sk_FragColor.r = 1 == 2 && 2 == 8 ? 4 : -4;"
795 "sk_FragColor.r = 1 == 1 ^^ 1 != 1 ? 5 : -5;"
796 "sk_FragColor.r = 1 == 1 ^^ 1 == 1 ? 6 : -6;"
797 "}",
798 *SkSL::ShaderCapsFactory::Default(),
799 "#version 400\n"
800 "out vec4 sk_FragColor;\n"
801 "void main() {\n"
802 " sk_FragColor.x = 1.0;\n"
803 " sk_FragColor.x = -2.0;\n"
804 " sk_FragColor.x = 3.0;\n"
805 " sk_FragColor.x = -4.0;\n"
806 " sk_FragColor.x = 5.0;\n"
807 " sk_FragColor.x = -6.0;\n"
808 "}\n");
809 }
810
DEF_TEST(SkSLShortCircuitBoolFolding,r)811 DEF_TEST(SkSLShortCircuitBoolFolding, r) {
812 test(r,
813 "void main() {"
814 "bool expr1 = sk_FragCoord.x > 0;"
815 "bool expr2 = sk_FragCoord.y > 0;"
816 " if (true && expr1) {" // -> if (expr1)
817 " sk_FragColor.r = 1;"
818 " } else if (false && expr1) {" // -> if (false) -> block removed
819 " sk_FragColor.r = -2;"
820 " } else if (false || expr2) {" // -> if (expr2)
821 " sk_FragColor.r = 3;"
822 " } else if (true || expr2) {" // -> if (true) -> replaces unreachable else
823 " sk_FragColor.r = 4;"
824 " } else {" // removed
825 " sk_FragColor.r = -5;"
826 " }"
827 // Test short-circuiting of right hand side boolean literals
828 " if (expr1 && true) {" // -> if (expr1)
829 " sk_FragColor.r = 1;"
830 " } else if (expr1 && false) {" // -> if (false) -> block removed
831 " sk_FragColor.r = -2;"
832 " } else if (expr2 || false) {" // -> if (expr2)
833 " sk_FragColor.r = 3;"
834 " } else if (expr2 || true) {" // -> if (true) -> replaces unreachable else
835 " sk_FragColor.r = 4;"
836 " } else {" // removed
837 " sk_FragColor.r = -5;"
838 " }"
839 "}",
840 *SkSL::ShaderCapsFactory::Default(),
841 "#version 400\n"
842 "out vec4 sk_FragColor;\n"
843 "void main() {\n"
844 " bool expr1 = gl_FragCoord.x > 0.0;\n"
845 " bool expr2 = gl_FragCoord.y > 0.0;\n"
846 " if (expr1) {\n"
847 " sk_FragColor.x = 1.0;\n"
848 " } else if (expr2) {\n"
849 " sk_FragColor.x = 3.0;\n"
850 " } else {\n"
851 " sk_FragColor.x = 4.0;\n"
852 " }\n"
853 " if (expr1) {\n"
854 " sk_FragColor.x = 1.0;\n"
855 " } else if (expr2) {\n"
856 " sk_FragColor.x = 3.0;\n"
857 " } else {\n"
858 " sk_FragColor.x = 4.0;\n"
859 " }\n"
860 "}\n");
861 }
862
DEF_TEST(SkSLVecFolding,r)863 DEF_TEST(SkSLVecFolding, r) {
864 test(r,
865 "void main() {\n"
866 "sk_FragColor.r = half4(0.5, 1, 1, 1).x;\n"
867 "sk_FragColor = half4(half2(1), half2(2, 3)) + half4(5, 6, 7, 8);\n"
868 "sk_FragColor = half4(8, half3(10)) - half4(1);\n"
869 "sk_FragColor = half4(2) * half4(1, 2, 3, 4);\n"
870 "sk_FragColor = half4(12) / half4(1, 2, 3, 4);\n"
871 "sk_FragColor.r = (half4(12) / half4(1, 2, 3, 4)).y;\n"
872 "sk_FragColor.x = half4(1) == half4(1) ? 1.0 : -1.0;\n"
873 "sk_FragColor.x = half4(1) == half4(2) ? 2.0 : -2.0;\n"
874 "sk_FragColor.x = half2(1) == half2(1, 1) ? 3.0 : -3.0;\n"
875 "sk_FragColor.x = half2(1, 1) == half2(1, 1) ? 4.0 : -4.0;\n"
876 "sk_FragColor.x = half2(1) == half2(1, 0) ? 5.0 : -5.0;\n"
877 "sk_FragColor.x = half4(1) == half4(half2(1), half2(1)) ? 6.0 : -6.0;\n"
878 "sk_FragColor.x = half4(half3(1), 1) == half4(half2(1), half2(1)) ? 7.0 : -7.0;\n"
879 "sk_FragColor.x = half4(half3(1), 1) == half4(half2(1), 1, 0) ? 8.0 : -8.0;\n"
880 "sk_FragColor.x = half2(1) != half2(1, 0) ? 9.0 : -9.0;\n"
881 "sk_FragColor.x = half4(1) != half4(half2(1), half2(1)) ? 10.0 : -10.0;\n"
882 "sk_FragColor = half4(half(sqrt(1))) * half4(1);\n"
883 "sk_FragColor = half4(1) * half4(half(sqrt(2)));\n"
884 "sk_FragColor = half4(0) * half4(half(sqrt(3)));\n"
885 "sk_FragColor = half4(half(sqrt(4))) * half4(0);\n"
886 "sk_FragColor = half4(0) / half4(half(sqrt(5)));\n"
887 "sk_FragColor = half4(0) + half4(half(sqrt(6)));\n"
888 "sk_FragColor = half4(half(sqrt(7))) + half4(0);\n"
889 "sk_FragColor = half4(half(sqrt(8))) - half4(0);\n"
890 "sk_FragColor = half4(0) + half(half(sqrt(9)));\n"
891 "sk_FragColor = half4(0) * half(sqrt(10));\n"
892 "sk_FragColor = half4(0) / half(sqrt(11));\n"
893 "sk_FragColor = half4(1) * half(sqrt(12));\n"
894 "sk_FragColor = 0 + half4(half(sqrt(13)));\n"
895 "sk_FragColor = 0 * half4(half(sqrt(14)));\n"
896 "sk_FragColor = 0 / half4(half(sqrt(15)));\n"
897 "sk_FragColor = 1 * half4(half(sqrt(16)));\n"
898 "sk_FragColor = half4(half(sqrt(17))) + 0;\n"
899 "sk_FragColor = half4(half(sqrt(18))) * 0;\n"
900 "sk_FragColor = half4(half(sqrt(19))) * 1;\n"
901 "sk_FragColor = half4(half(sqrt(19.5))) - 0;\n"
902 "sk_FragColor = half(half(sqrt(20))) * half4(1);\n"
903 "sk_FragColor = half(half(sqrt(21))) + half4(0);\n"
904 "sk_FragColor = half(half(sqrt(22))) - half4(0);\n"
905 "sk_FragColor = half(half(sqrt(23))) / half4(1);\n"
906 "sk_FragColor = half4(half(sqrt(24))) / 1;\n"
907 "sk_FragColor += half4(1);\n"
908 "sk_FragColor += half4(0);\n"
909 "sk_FragColor -= half4(1);\n"
910 "sk_FragColor -= half4(0);\n"
911 "sk_FragColor *= half4(1);\n"
912 "sk_FragColor *= half4(2);\n"
913 "sk_FragColor /= half4(1);\n"
914 "sk_FragColor /= half4(2);\n"
915 "}",
916 *SkSL::ShaderCapsFactory::Default(),
917 "#version 400\n"
918 "out vec4 sk_FragColor;\n"
919 "void main() {\n"
920 " sk_FragColor.x = 0.5;\n"
921 " sk_FragColor = vec4(6.0, 7.0, 9.0, 11.0);\n"
922 " sk_FragColor = vec4(7.0, 9.0, 9.0, 9.0);\n"
923 " sk_FragColor = vec4(2.0, 4.0, 6.0, 8.0);\n"
924 " sk_FragColor = vec4(12.0, 6.0, 4.0, 3.0);\n"
925 " sk_FragColor.x = 6.0;\n"
926 " sk_FragColor.x = 1.0;\n"
927 " sk_FragColor.x = -2.0;\n"
928 " sk_FragColor.x = 3.0;\n"
929 " sk_FragColor.x = 4.0;\n"
930 " sk_FragColor.x = -5.0;\n"
931 " sk_FragColor.x = 6.0;\n"
932 " sk_FragColor.x = 7.0;\n"
933 " sk_FragColor.x = -8.0;\n"
934 " sk_FragColor.x = 9.0;\n"
935 " sk_FragColor.x = -10.0;\n"
936 " sk_FragColor = vec4(sqrt(1.0));\n"
937 " sk_FragColor = vec4(sqrt(2.0));\n"
938 " sk_FragColor = vec4(0.0);\n"
939 " sk_FragColor = vec4(0.0);\n"
940 " sk_FragColor = vec4(0.0);\n"
941 " sk_FragColor = vec4(sqrt(6.0));\n"
942 " sk_FragColor = vec4(sqrt(7.0));\n"
943 " sk_FragColor = vec4(sqrt(8.0));\n"
944 " sk_FragColor = vec4(sqrt(9.0));\n"
945 " sk_FragColor = vec4(0.0);\n"
946 " sk_FragColor = vec4(0.0);\n"
947 " sk_FragColor = vec4(sqrt(12.0));\n"
948 " sk_FragColor = vec4(sqrt(13.0));\n"
949 " sk_FragColor = vec4(0.0);\n"
950 " sk_FragColor = vec4(0.0);\n"
951 " sk_FragColor = vec4(sqrt(16.0));\n"
952 " sk_FragColor = vec4(sqrt(17.0));\n"
953 " sk_FragColor = vec4(0.0);\n"
954 " sk_FragColor = vec4(sqrt(19.0));\n"
955 " sk_FragColor = vec4(sqrt(19.5));\n"
956 " sk_FragColor = vec4(sqrt(20.0));\n"
957 " sk_FragColor = vec4(sqrt(21.0));\n"
958 " sk_FragColor = vec4(sqrt(22.0));\n"
959 " sk_FragColor = vec4(sqrt(23.0));\n"
960 " sk_FragColor = vec4(sqrt(24.0));\n"
961 " sk_FragColor += vec4(1.0);\n"
962 " sk_FragColor -= vec4(1.0);\n"
963 " sk_FragColor *= vec4(2.0);\n"
964 " sk_FragColor /= vec4(2.0);\n"
965 "}\n");
966 }
967
DEF_TEST(SkSLMatFolding,r)968 DEF_TEST(SkSLMatFolding, r) {
969 test(r,
970 "void main() {"
971 "sk_FragColor.x = float2x2(float2(1.0, 0.0), float2(0.0, 1.0)) == "
972 "float2x2(float2(1.0, 0.0), float2(0.0, 1.0)) ? 1 : -1;"
973 "sk_FragColor.x = float2x2(float2(1.0, 0.0), float2(1.0, 1.0)) == "
974 "float2x2(float2(1.0, 0.0), float2(0.0, 1.0)) ? 2 : -2;"
975 "sk_FragColor.x = float2x2(1) == float2x2(1) ? 3 : -3;"
976 "sk_FragColor.x = float2x2(1) == float2x2(0) ? 4 : -4;"
977 "sk_FragColor.x = float2x2(1) == float2x2(float2(1.0, 0.0), float2(0.0, 1.0)) ? 5 : -5;"
978 "sk_FragColor.x = float2x2(2) == float2x2(float2(1.0, 0.0), float2(0.0, 1.0)) ? 6 : -6;"
979 "sk_FragColor.x = float3x2(2) == float3x2(float2(2.0, 0.0), float2(0.0, 2.0), float2(0.0))"
980 "? 7 : -7;"
981 "sk_FragColor.x = float2x2(1) != float2x2(1) ? 8 : -8;"
982 "sk_FragColor.x = float2x2(1) != float2x2(0) ? 9 : -9;"
983 "sk_FragColor.x = float3x3(float3(1.0, 0.0, 0.0), float3(0.0, 1.0, 0.0), "
984 "float3(0.0, 0.0, 0.0)) == float3x3(float2x2(1.0)) ? 10 : -10;"
985 "sk_FragColor.x = float2x2(float3x3(1.0)) == float2x2(1.0) ? 11 : -11;"
986 "sk_FragColor.x = float2x2(float4(1.0, 0.0, 0.0, 1.0)) == float2x2(1.0) ? 12 : -12;"
987 "sk_FragColor.x = float2x2(1.0, 0.0, float2(0.0, 1.0)) == float2x2(1.0) ? 13 : -13;"
988 "sk_FragColor.x = float2x2(float2(1.0, 0.0), 0.0, 1.0) == float2x2(1.0) ? 14 : -14;"
989 "}",
990 *SkSL::ShaderCapsFactory::Default(),
991 "#version 400\n"
992 "out vec4 sk_FragColor;\n"
993 "void main() {\n"
994 " sk_FragColor.x = 1.0;\n"
995 " sk_FragColor.x = -2.0;\n"
996 " sk_FragColor.x = 3.0;\n"
997 " sk_FragColor.x = -4.0;\n"
998 " sk_FragColor.x = 5.0;\n"
999 " sk_FragColor.x = -6.0;\n"
1000 " sk_FragColor.x = 7.0;\n"
1001 " sk_FragColor.x = -8.0;\n"
1002 " sk_FragColor.x = 9.0;\n"
1003 " sk_FragColor.x = 10.0;\n"
1004 " sk_FragColor.x = 11.0;\n"
1005 " sk_FragColor.x = 12.0;\n"
1006 " sk_FragColor.x = 13.0;\n"
1007 " sk_FragColor.x = 14.0;\n"
1008 "}\n");
1009 }
1010
DEF_TEST(SkSLConstantIf,r)1011 DEF_TEST(SkSLConstantIf, r) {
1012 test(r,
1013 "void main() {"
1014 "int x;"
1015 "if (true) x = 1;"
1016 "if (2 > 1) x = 2; else x = 3;"
1017 "if (1 > 2) x = 4; else x = 5;"
1018 "if (false) x = 6;"
1019 "sk_FragColor.r = x;"
1020 "}",
1021 *SkSL::ShaderCapsFactory::Default(),
1022 "#version 400\n"
1023 "out vec4 sk_FragColor;\n"
1024 "void main() {\n"
1025 " sk_FragColor.x = 5.0;\n"
1026 "}\n");
1027 }
1028
DEF_TEST(SkSLCaps,r)1029 DEF_TEST(SkSLCaps, r) {
1030 test(r,
1031 "void main() {"
1032 "int x = 0;"
1033 "int y = 0;"
1034 "int z = 0;"
1035 "if (sk_Caps.externalTextureSupport) x = 1;"
1036 "if (sk_Caps.fbFetchSupport) y = 1;"
1037 "if (sk_Caps.canUseAnyFunctionInShader) z = 1;"
1038 "sk_FragColor = half4(x, y, z, 0.0);"
1039 "}",
1040 *SkSL::ShaderCapsFactory::VariousCaps(),
1041 "#version 400\n"
1042 "out vec4 sk_FragColor;\n"
1043 "void main() {\n"
1044 " sk_FragColor = vec4(1.0, 0.0, 0.0, 0.0);\n"
1045 "}\n");
1046 }
1047
DEF_TEST(SkSLTexture,r)1048 DEF_TEST(SkSLTexture, r) {
1049 test(r,
1050 "uniform sampler1D one;"
1051 "uniform sampler2D two;"
1052 "void main() {"
1053 "float4 a = sample(one, 0);"
1054 "float4 b = sample(two, float2(0));"
1055 "float4 c = sample(one, float2(0));"
1056 "float4 d = sample(two, float3(0));"
1057 "sk_FragColor = half4(half(a.x), half(b.x), half(c.x), half(d.x));"
1058 "}",
1059 *SkSL::ShaderCapsFactory::Default(),
1060 "#version 400\n"
1061 "out vec4 sk_FragColor;\n"
1062 "uniform sampler1D one;\n"
1063 "uniform sampler2D two;\n"
1064 "void main() {\n"
1065 " vec4 a = texture(one, 0.0);\n"
1066 " vec4 b = texture(two, vec2(0.0));\n"
1067 " vec4 c = textureProj(one, vec2(0.0));\n"
1068 " vec4 d = textureProj(two, vec3(0.0));\n"
1069 " sk_FragColor = vec4(a.x, b.x, c.x, d.x);\n"
1070 "}\n");
1071 test(r,
1072 "uniform sampler1D one;"
1073 "uniform sampler2D two;"
1074 "void main() {"
1075 "float4 a = sample(one, 0);"
1076 "float4 b = sample(two, float2(0));"
1077 "float4 c = sample(one, float2(0));"
1078 "float4 d = sample(two, float3(0));"
1079 "sk_FragColor = half4(half(a.x), half(b.x), half(c.x), half(d.x));"
1080 "}",
1081 *SkSL::ShaderCapsFactory::Version110(),
1082 "#version 110\n"
1083 "uniform sampler1D one;\n"
1084 "uniform sampler2D two;\n"
1085 "void main() {\n"
1086 " vec4 a = texture1D(one, 0.0);\n"
1087 " vec4 b = texture2D(two, vec2(0.0));\n"
1088 " vec4 c = texture1DProj(one, vec2(0.0));\n"
1089 " vec4 d = texture2DProj(two, vec3(0.0));\n"
1090 " gl_FragColor = vec4(a.x, b.x, c.x, d.x);\n"
1091 "}\n");
1092 }
1093
DEF_TEST(SkSLSharpen,r)1094 DEF_TEST(SkSLSharpen, r) {
1095 SkSL::Program::Settings settings;
1096 settings.fSharpenTextures = true;
1097 sk_sp<GrShaderCaps> caps = SkSL::ShaderCapsFactory::Default();
1098 settings.fCaps = caps.get();
1099 SkSL::Program::Inputs inputs;
1100 test(r,
1101 "uniform sampler1D one;"
1102 "uniform sampler2D two;"
1103 "void main() {"
1104 "float4 a = sample(one, 0);"
1105 "float4 b = sample(two, float2(0));"
1106 "float4 c = sample(one, float2(0));"
1107 "float4 d = sample(two, float3(0));"
1108 "sk_FragColor = half4(half(a.x), half(b.x), half(c.x), half(d.x));"
1109 "}",
1110 settings,
1111 "#version 400\n"
1112 "out vec4 sk_FragColor;\n"
1113 "uniform sampler1D one;\n"
1114 "uniform sampler2D two;\n"
1115 "void main() {\n"
1116 " vec4 a = texture(one, 0.0, -0.5);\n"
1117 " vec4 b = texture(two, vec2(0.0), -0.5);\n"
1118 " vec4 c = textureProj(one, vec2(0.0), -0.5);\n"
1119 " vec4 d = textureProj(two, vec3(0.0), -0.5);\n"
1120 " sk_FragColor = vec4(a.x, b.x, c.x, d.x);\n"
1121 "}\n",
1122 &inputs);
1123
1124 caps = SkSL::ShaderCapsFactory::Version110();
1125 settings.fCaps = caps.get();
1126 test(r,
1127 "uniform sampler1D one;"
1128 "uniform sampler2D two;"
1129 "void main() {"
1130 "float4 a = sample(one, 0);"
1131 "float4 b = sample(two, float2(0));"
1132 "float4 c = sample(one, float2(0));"
1133 "float4 d = sample(two, float3(0));"
1134 "sk_FragColor = half4(half(a.x), half(b.x), half(c.x), half(d.x));"
1135 "}",
1136 settings,
1137 "#version 110\n"
1138 "uniform sampler1D one;\n"
1139 "uniform sampler2D two;\n"
1140 "void main() {\n"
1141 " vec4 a = texture1D(one, 0.0, -0.5);\n"
1142 " vec4 b = texture2D(two, vec2(0.0), -0.5);\n"
1143 " vec4 c = texture1DProj(one, vec2(0.0), -0.5);\n"
1144 " vec4 d = texture2DProj(two, vec3(0.0), -0.5);\n"
1145 " gl_FragColor = vec4(a.x, b.x, c.x, d.x);\n"
1146 "}\n",
1147 &inputs);
1148 }
1149
DEF_TEST(SkSLOffset,r)1150 DEF_TEST(SkSLOffset, r) {
1151 test(r,
1152 "struct Test {"
1153 "layout(offset = 0) int x;"
1154 "layout(offset = 4) int y;"
1155 "int z;"
1156 "} test;"
1157 "void main() {"
1158 "Test t;"
1159 "t.x = 0;"
1160 "sk_FragColor.r = half(t.x);"
1161 "}",
1162 *SkSL::ShaderCapsFactory::Default(),
1163 "#version 400\n"
1164 "out vec4 sk_FragColor;\n"
1165 "void main() {\n"
1166 " struct Test {\n"
1167 " layout (offset = 0) int x;\n"
1168 " layout (offset = 4) int y;\n"
1169 " int z;\n"
1170 " } t;\n"
1171 " t.x = 0;\n"
1172 " sk_FragColor.x = float(t.x);\n"
1173 "}\n");
1174 }
1175
DEF_TEST(SkSLFragCoord,r)1176 DEF_TEST(SkSLFragCoord, r) {
1177 SkSL::Program::Settings settings;
1178 settings.fFlipY = true;
1179 sk_sp<GrShaderCaps> caps = SkSL::ShaderCapsFactory::FragCoordsOld();
1180 settings.fCaps = caps.get();
1181 SkSL::Program::Inputs inputs;
1182 test(r,
1183 "void main() { sk_FragColor.xy = half2(sk_FragCoord.xy); }",
1184 settings,
1185 "#version 110\n"
1186 "#extension GL_ARB_fragment_coord_conventions : require\n"
1187 "layout(origin_upper_left) in vec4 gl_FragCoord;\n"
1188 "void main() {\n"
1189 " gl_FragColor.xy = gl_FragCoord.xy;\n"
1190 "}\n",
1191 &inputs);
1192 REPORTER_ASSERT(r, !inputs.fRTHeight);
1193
1194 caps = SkSL::ShaderCapsFactory::FragCoordsNew();
1195 settings.fCaps = caps.get();
1196 test(r,
1197 "void main() { sk_FragColor.xy = half2(sk_FragCoord.xy); }",
1198 settings,
1199 "#version 400\n"
1200 "layout(origin_upper_left) in vec4 gl_FragCoord;\n"
1201 "out vec4 sk_FragColor;\n"
1202 "void main() {\n"
1203 " sk_FragColor.xy = gl_FragCoord.xy;\n"
1204 "}\n",
1205 &inputs);
1206 REPORTER_ASSERT(r, !inputs.fRTHeight);
1207
1208 caps = SkSL::ShaderCapsFactory::Default();
1209 settings.fCaps = caps.get();
1210 test(r,
1211 "void main() { sk_FragColor.xy = half2(sk_FragCoord.xy); }",
1212 settings,
1213 "#version 400\n"
1214 "uniform float u_skRTHeight;\n"
1215 "out vec4 sk_FragColor;\n"
1216 "void main() {\n"
1217 " vec4 sk_FragCoord = vec4(gl_FragCoord.x, u_skRTHeight - gl_FragCoord.y, "
1218 "gl_FragCoord.z, gl_FragCoord.w);\n"
1219 " sk_FragColor.xy = sk_FragCoord.xy;\n"
1220 "}\n",
1221 &inputs);
1222 REPORTER_ASSERT(r, inputs.fRTHeight);
1223
1224 settings.fFlipY = false;
1225 test(r,
1226 "void main() { sk_FragColor.xy = half2(sk_FragCoord.xy); }",
1227 settings,
1228 "#version 400\n"
1229 "out vec4 sk_FragColor;\n"
1230 "void main() {\n"
1231 " sk_FragColor.xy = gl_FragCoord.xy;\n"
1232 "}\n",
1233 &inputs);
1234 REPORTER_ASSERT(r, !inputs.fRTHeight);
1235
1236 test(r,
1237 "in float4 pos; void main() { sk_Position = pos; }",
1238 *SkSL::ShaderCapsFactory::CannotUseFragCoord(),
1239 "#version 400\n"
1240 "out vec4 sk_FragCoord_Workaround;\n"
1241 "in vec4 pos;\n"
1242 "void main() {\n"
1243 " sk_FragCoord_Workaround = (gl_Position = pos);\n"
1244 "}\n",
1245 SkSL::Program::kVertex_Kind);
1246
1247 test(r,
1248 "in uniform float4 sk_RTAdjust; in float4 pos; void main() { sk_Position = pos; }",
1249 *SkSL::ShaderCapsFactory::CannotUseFragCoord(),
1250 "#version 400\n"
1251 "out vec4 sk_FragCoord_Workaround;\n"
1252 "in uniform vec4 sk_RTAdjust;\n"
1253 "in vec4 pos;\n"
1254 "void main() {\n"
1255 " sk_FragCoord_Workaround = (gl_Position = pos);\n"
1256 " gl_Position = vec4(gl_Position.xy * sk_RTAdjust.xz + gl_Position.ww * sk_RTAdjust.yw,"
1257 " 0.0, gl_Position.w);\n"
1258 "}\n",
1259 SkSL::Program::kVertex_Kind);
1260
1261 test(r,
1262 "void main() { sk_FragColor.xy = half2(sk_FragCoord.xy); }",
1263 *SkSL::ShaderCapsFactory::CannotUseFragCoord(),
1264 "#version 400\n"
1265 "in vec4 sk_FragCoord_Workaround;\n"
1266 "out vec4 sk_FragColor;\n"
1267 "void main() {\n"
1268 " float sk_FragCoord_InvW = 1. / sk_FragCoord_Workaround.w;\n"
1269 " vec4 sk_FragCoord_Resolved = vec4(sk_FragCoord_Workaround.xyz * "
1270 "sk_FragCoord_InvW, sk_FragCoord_InvW);\n"
1271 " sk_FragCoord_Resolved.xy = floor(sk_FragCoord_Resolved.xy) + vec2(.5);\n"
1272 " sk_FragColor.xy = sk_FragCoord_Resolved.xy;\n"
1273 "}\n");
1274 }
1275
DEF_TEST(SkSLWidthAndHeight,r)1276 DEF_TEST(SkSLWidthAndHeight, r) {
1277 SkSL::Program::Settings settings;
1278 sk_sp<GrShaderCaps> caps = SkSL::ShaderCapsFactory::Default();
1279 settings.fCaps = caps.get();
1280 SkSL::Program::Inputs inputs;
1281 test(r,
1282 "void main() { sk_FragColor.r = half(sk_FragCoord.x / sk_Width); }",
1283 settings,
1284 "#version 400\n"
1285 "uniform float u_skRTWidth;\n"
1286 "out vec4 sk_FragColor;\n"
1287 "void main() {\n"
1288 " sk_FragColor.x = gl_FragCoord.x / u_skRTWidth;\n"
1289 "}\n",
1290 &inputs);
1291 REPORTER_ASSERT(r, inputs.fRTWidth);
1292 REPORTER_ASSERT(r, !inputs.fRTHeight);
1293
1294 test(r,
1295 "void main() { sk_FragColor.r = half(sk_FragCoord.y / sk_Height); }",
1296 settings,
1297 "#version 400\n"
1298 "uniform float u_skRTHeight;\n"
1299 "out vec4 sk_FragColor;\n"
1300 "void main() {\n"
1301 " sk_FragColor.x = gl_FragCoord.y / u_skRTHeight;\n"
1302 "}\n",
1303 &inputs);
1304 REPORTER_ASSERT(r, !inputs.fRTWidth);
1305 REPORTER_ASSERT(r, inputs.fRTHeight);
1306 }
1307
DEF_TEST(SkSLClockwise,r)1308 DEF_TEST(SkSLClockwise, r) {
1309 test(r,
1310 "void main() { sk_FragColor = half4(sk_Clockwise ? +1 : -1); }",
1311 *SkSL::ShaderCapsFactory::Default(),
1312 "#version 400\n"
1313 "out vec4 sk_FragColor;\n"
1314 "void main() {\n"
1315 " sk_FragColor = vec4(float(gl_FrontFacing ? 1 : -1));\n"
1316 "}\n");
1317 }
1318
DEF_TEST(SkSLVertexID,r)1319 DEF_TEST(SkSLVertexID, r) {
1320 test(r,
1321 "out int id; void main() { id = sk_VertexID; }",
1322 *SkSL::ShaderCapsFactory::Default(),
1323 "#version 400\n"
1324 "out int id;\n"
1325 "void main() {\n"
1326 " id = gl_VertexID;\n"
1327 "}\n",
1328 SkSL::Program::kVertex_Kind);
1329 }
1330
DEF_TEST(SkSLInstanceID,r)1331 DEF_TEST(SkSLInstanceID, r) {
1332 test(r,
1333 "out int id; void main() { id = sk_InstanceID; }",
1334 *SkSL::ShaderCapsFactory::Default(),
1335 "#version 400\n"
1336 "out int id;\n"
1337 "void main() {\n"
1338 " id = gl_InstanceID;\n"
1339 "}\n",
1340 SkSL::Program::kVertex_Kind);
1341 }
1342
DEF_TEST(SkSLClipDistance,r)1343 DEF_TEST(SkSLClipDistance, r) {
1344 test(r,
1345 "void main() { sk_ClipDistance[0] = 0; }",
1346 *SkSL::ShaderCapsFactory::Default(),
1347 "#version 400\n"
1348 "void main() {\n"
1349 " gl_ClipDistance[0] = 0.0;\n"
1350 "}\n",
1351 SkSL::Program::kVertex_Kind);
1352 test(r,
1353 "void main() { sk_FragColor = half4(half(sk_ClipDistance[0])); }",
1354 *SkSL::ShaderCapsFactory::Default(),
1355 "#version 400\n"
1356 "out vec4 sk_FragColor;\n"
1357 "void main() {\n"
1358 " sk_FragColor = vec4(gl_ClipDistance[0]);\n"
1359 "}\n");
1360 }
1361
DEF_TEST(SkSLArrayTypes,r)1362 DEF_TEST(SkSLArrayTypes, r) {
1363 test(r,
1364 "void main() { float2 x[2] = float2[2](float2(1), float2(2));"
1365 "float2[2] y = float2[2](float2(3), float2(4));"
1366 "sk_FragColor = half4(half2(x[0]), half2(y[1])); }",
1367 *SkSL::ShaderCapsFactory::Default(),
1368 "#version 400\n"
1369 "out vec4 sk_FragColor;\n"
1370 "void main() {\n"
1371 " sk_FragColor = vec4(vec2[2](vec2(1.0), vec2(2.0))[0], "
1372 "vec2[2](vec2(3.0), vec2(4.0))[1]);\n"
1373 "}\n");
1374 }
1375
DEF_TEST(SkSLArrayIndexTypes,r)1376 DEF_TEST(SkSLArrayIndexTypes, r) {
1377 test(r,
1378 "void main() { float array[4] = float[4](1, 2, 3, 4);\n"
1379 "short x = 0;\n ushort y = 1;\n int z = 2;\n uint w = 3;\n"
1380 "sk_FragColor = half4(half(array[x]), half(array[y]), half(array[z]), half(array[w])); }",
1381 *SkSL::ShaderCapsFactory::Default(),
1382 "#version 400\n"
1383 "out vec4 sk_FragColor;\n"
1384 "void main() {\n"
1385 " sk_FragColor = vec4(float[4](1.0, 2.0, 3.0, 4.0)[0], "
1386 "float[4](1.0, 2.0, 3.0, 4.0)[1], "
1387 "float[4](1.0, 2.0, 3.0, 4.0)[2], "
1388 "float[4](1.0, 2.0, 3.0, 4.0)[3]);\n"
1389 "}\n");
1390 }
1391
DEF_TEST(SkSLGeometry,r)1392 DEF_TEST(SkSLGeometry, r) {
1393 test(r,
1394 "layout(points) in;"
1395 "layout(invocations = 2) in;"
1396 "layout(line_strip, max_vertices = 2) out;"
1397 "void main() {"
1398 "sk_Position = sk_in[0].sk_Position + float4(-0.5, 0, 0, sk_InvocationID);"
1399 "EmitVertex();"
1400 "sk_Position = sk_in[0].sk_Position + float4(0.5, 0, 0, sk_InvocationID);"
1401 "EmitVertex();"
1402 "EndPrimitive();"
1403 "}",
1404 *SkSL::ShaderCapsFactory::GeometryShaderSupport(),
1405 "#version 400\n"
1406 "layout (points) in ;\n"
1407 "layout (invocations = 2) in ;\n"
1408 "layout (line_strip, max_vertices = 2) out ;\n"
1409 "void main() {\n"
1410 " gl_Position = gl_in[0].gl_Position + vec4(-0.5, 0.0, 0.0, float(gl_InvocationID));\n"
1411 " EmitVertex();\n"
1412 " gl_Position = gl_in[0].gl_Position + vec4(0.5, 0.0, 0.0, float(gl_InvocationID));\n"
1413 " EmitVertex();\n"
1414 " EndPrimitive();\n"
1415 "}\n",
1416 SkSL::Program::kGeometry_Kind);
1417 }
1418
DEF_TEST(SkSLSwitch,r)1419 DEF_TEST(SkSLSwitch, r) {
1420 // basic "does a switch even work" test
1421 test(r,
1422 "void main() {"
1423 " float x;"
1424 " switch (int(sqrt(1))) {"
1425 " case 0:"
1426 " x = 0.0;"
1427 " break;"
1428 " case 1:"
1429 " x = 1.0;"
1430 " break;"
1431 " default:"
1432 " x = 2.0;"
1433 " }"
1434 " sk_FragColor = half4(half(x));"
1435 "}",
1436 *SkSL::ShaderCapsFactory::Default(),
1437 "#version 400\n"
1438 "out vec4 sk_FragColor;\n"
1439 "void main() {\n"
1440 " float x;\n"
1441 " switch (int(sqrt(1.0))) {\n"
1442 " case 0:\n"
1443 " x = 0.0;\n"
1444 " break;\n"
1445 " case 1:\n"
1446 " x = 1.0;\n"
1447 " break;\n"
1448 " default:\n"
1449 " x = 2.0;\n"
1450 " }\n"
1451 " sk_FragColor = vec4(x);\n"
1452 "}\n");
1453 // dead code inside of switch
1454 test(r,
1455 "void main() {"
1456 " float x;"
1457 " switch (int(sqrt(2))) {"
1458 " case 0:"
1459 " x = 0.0;"
1460 " case 1:"
1461 " x = 1.0;"
1462 " default:"
1463 " x = 2.0;"
1464 " }"
1465 " sk_FragColor = half4(half(x));"
1466 "}",
1467 *SkSL::ShaderCapsFactory::Default(),
1468 "#version 400\n"
1469 "out vec4 sk_FragColor;\n"
1470 "void main() {\n"
1471 " switch (int(sqrt(2.0))) {\n"
1472 " case 0:\n"
1473 " ;\n"
1474 " case 1:\n"
1475 " ;\n"
1476 " default:\n"
1477 " ;\n"
1478 " }\n"
1479 " sk_FragColor = vec4(2.0);\n"
1480 "}\n");
1481 // non-static test w/ fallthrough
1482 test(r,
1483 "void main() {"
1484 " float x = 0.0;"
1485 " switch (int(sqrt(3))) {"
1486 " case 0:"
1487 " x = 0.0;"
1488 " case 1:"
1489 " x = 1.0;"
1490 " }"
1491 " sk_FragColor = half4(half(x));"
1492 "}",
1493 *SkSL::ShaderCapsFactory::Default(),
1494 "#version 400\n"
1495 "out vec4 sk_FragColor;\n"
1496 "void main() {\n"
1497 " float x = 0.0;\n"
1498 " switch (int(sqrt(3.0))) {\n"
1499 " case 0:\n"
1500 " x = 0.0;\n"
1501 " case 1:\n"
1502 " x = 1.0;\n"
1503 " }\n"
1504 " sk_FragColor = vec4(x);\n"
1505 "}\n");
1506 // static test w/ fallthrough
1507 test(r,
1508 "void main() {"
1509 " float x = 0.0;"
1510 " switch (0) {"
1511 " case 0:"
1512 " x = 0.0;"
1513 " case 1:"
1514 " x = 1.0;"
1515 " }"
1516 " sk_FragColor = half4(half(x));"
1517 "}",
1518 *SkSL::ShaderCapsFactory::Default(),
1519 "#version 400\n"
1520 "out vec4 sk_FragColor;\n"
1521 "void main() {\n"
1522 " sk_FragColor = vec4(1.0);\n"
1523 "}\n");
1524 // static test w/ fallthrough, different entry point
1525 test(r,
1526 "void main() {"
1527 " float x = 0.0;"
1528 " switch (1) {"
1529 " case 0:"
1530 " x = 0.0;"
1531 " case 1:"
1532 " x = 1.0;"
1533 " }"
1534 " sk_FragColor = half4(half(x));"
1535 "}",
1536 *SkSL::ShaderCapsFactory::Default(),
1537 "#version 400\n"
1538 "out vec4 sk_FragColor;\n"
1539 "void main() {\n"
1540 " sk_FragColor = vec4(1.0);\n"
1541 "}\n");
1542 // static test w/ break
1543 test(r,
1544 "void main() {"
1545 " float x = 0.0;"
1546 " switch (0) {"
1547 " case 0:"
1548 " x = 0.0;"
1549 " break;"
1550 " case 1:"
1551 " x = 1.0;"
1552 " }"
1553 " sk_FragColor = half4(half(x));"
1554 "}",
1555 *SkSL::ShaderCapsFactory::Default(),
1556 "#version 400\n"
1557 "out vec4 sk_FragColor;\n"
1558 "void main() {\n"
1559 " sk_FragColor = vec4(0.0);\n"
1560 "}\n");
1561 // static test w/ static conditional break
1562 test(r,
1563 "void main() {"
1564 " float x = 0.0;"
1565 " switch (0) {"
1566 " case 0:"
1567 " x = 0.0;"
1568 " if (x < 1) break;"
1569 " case 1:"
1570 " x = 1.0;"
1571 " }"
1572 " sk_FragColor = half4(half(x));"
1573 "}",
1574 *SkSL::ShaderCapsFactory::Default(),
1575 "#version 400\n"
1576 "out vec4 sk_FragColor;\n"
1577 "void main() {\n"
1578 " sk_FragColor = vec4(0.0);\n"
1579 "}\n");
1580 // static test w/ non-static conditional break
1581 test(r,
1582 "void main() {"
1583 " float x = 0.0;"
1584 " switch (0) {"
1585 " case 0:"
1586 " x = 0.0;"
1587 " if (x < sqrt(1)) break;"
1588 " case 1:"
1589 " x = 1.0;"
1590 " }"
1591 " sk_FragColor = half4(half(x));"
1592 "}",
1593 *SkSL::ShaderCapsFactory::Default(),
1594 "#version 400\n"
1595 "out vec4 sk_FragColor;\n"
1596 "void main() {\n"
1597 " float x = 0.0;\n"
1598 " switch (0) {\n"
1599 " case 0:\n"
1600 " x = 0.0;\n"
1601 " if (0.0 < sqrt(1.0)) break;\n"
1602 " case 1:\n"
1603 " x = 1.0;\n"
1604 " }\n"
1605 " sk_FragColor = vec4(x);\n"
1606 "}\n");
1607 }
1608
DEF_TEST(SkSLRectangleTexture,r)1609 DEF_TEST(SkSLRectangleTexture, r) {
1610 test(r,
1611 "uniform sampler2D test;"
1612 "void main() {"
1613 " sk_FragColor = sample(test, float2(0.5));"
1614 "}",
1615 *SkSL::ShaderCapsFactory::Default(),
1616 "#version 400\n"
1617 "out vec4 sk_FragColor;\n"
1618 "uniform sampler2D test;\n"
1619 "void main() {\n"
1620 " sk_FragColor = texture(test, vec2(0.5));\n"
1621 "}\n");
1622 test(r,
1623 "uniform sampler2DRect test;"
1624 "void main() {"
1625 " sk_FragColor = sample(test, float2(0.5));"
1626 "}",
1627 *SkSL::ShaderCapsFactory::Default(),
1628 "#version 400\n"
1629 "out vec4 sk_FragColor;\n"
1630 "uniform sampler2DRect test;\n"
1631 "void main() {\n"
1632 " sk_FragColor = texture(test, vec2(0.5));\n"
1633 "}\n");
1634 test(r,
1635 "uniform sampler2DRect test;"
1636 "void main() {"
1637 " sk_FragColor = sample(test, float3(0.5));"
1638 "}",
1639 *SkSL::ShaderCapsFactory::Default(),
1640 "#version 400\n"
1641 "out vec4 sk_FragColor;\n"
1642 "uniform sampler2DRect test;\n"
1643 "void main() {\n"
1644 " sk_FragColor = texture(test, vec3(0.5));\n"
1645 "}\n");
1646 }
1647
DEF_TEST(SkSLUnusedVars,r)1648 DEF_TEST(SkSLUnusedVars, r) {
1649 test(r,
1650 "void main() {"
1651 "float a = 1, b = 2, c = 3;"
1652 "float d = c;"
1653 "float e = d;"
1654 "b++;"
1655 "d++;"
1656 "sk_FragColor = half4(half(b), half(b), half(d), half(d));"
1657 "}",
1658 *SkSL::ShaderCapsFactory::Default(),
1659 "#version 400\n"
1660 "out vec4 sk_FragColor;\n"
1661 "void main() {\n"
1662 " float b = 2.0;\n"
1663 " float d = 3.0;\n"
1664 " b++;\n"
1665 " d++;\n"
1666 " sk_FragColor = vec4(b, b, d, d);\n"
1667 "}\n");
1668 }
1669
DEF_TEST(SkSLMultipleAssignments,r)1670 DEF_TEST(SkSLMultipleAssignments, r) {
1671 test(r,
1672 "void main() {"
1673 "float x;"
1674 "float y;"
1675 "int z;"
1676 "x = y = z = 1;"
1677 "sk_FragColor = half4(z);"
1678 "}",
1679 *SkSL::ShaderCapsFactory::Default(),
1680 "#version 400\n"
1681 "out vec4 sk_FragColor;\n"
1682 "void main() {\n"
1683 " sk_FragColor = vec4(1.0);\n"
1684 "}\n");
1685 }
1686
DEF_TEST(SkSLComplexDelete,r)1687 DEF_TEST(SkSLComplexDelete, r) {
1688 test(r,
1689 "uniform float4x4 colorXform;"
1690 "uniform sampler2D sampler;"
1691 "void main() {"
1692 "float4 tmpColor;"
1693 "sk_FragColor = half4(1.0) * (tmpColor = sample(sampler, float2(1)) , "
1694 "half4(colorXform != float4x4(1.0) ? float4(clamp((float4x4(colorXform) * "
1695 "float4(tmpColor.xyz, 1.0)).xyz, "
1696 "0.0, tmpColor.w), tmpColor.w) : tmpColor));"
1697 "}",
1698 *SkSL::ShaderCapsFactory::Default(),
1699 "#version 400\n"
1700 "out vec4 sk_FragColor;\n"
1701 "uniform mat4 colorXform;\n"
1702 "uniform sampler2D sampler;\n"
1703 "void main() {\n"
1704 " vec4 tmpColor;\n"
1705 " sk_FragColor = (tmpColor = texture(sampler, vec2(1.0)) , colorXform != mat4(1.0) ? "
1706 "vec4(clamp((colorXform * vec4(tmpColor.xyz, 1.0)).xyz, 0.0, tmpColor.w), tmpColor.w) : "
1707 "tmpColor);\n"
1708 "}\n");
1709 }
1710
DEF_TEST(SkSLDependentInitializers,r)1711 DEF_TEST(SkSLDependentInitializers, r) {
1712 test(r,
1713 "void main() {"
1714 "float x = 0.5, y = x * 2;"
1715 "sk_FragColor = half4(half(y));"
1716 "}",
1717 *SkSL::ShaderCapsFactory::Default(),
1718 "#version 400\n"
1719 "out vec4 sk_FragColor;\n"
1720 "void main() {\n"
1721 " sk_FragColor = vec4(1.0);\n"
1722 "}\n");
1723 }
1724
DEF_TEST(SkSLDeadLoopVar,r)1725 DEF_TEST(SkSLDeadLoopVar, r) {
1726 test(r,
1727 "void main() {"
1728 "for (int x = 0; x < 4; ) {"
1729 "break;"
1730 "}"
1731 "}",
1732 *SkSL::ShaderCapsFactory::Default(),
1733 "#version 400\n"
1734 "void main() {\n"
1735 " for (; true; ) {\n"
1736 " break;\n"
1737 " }\n"
1738 "}\n"
1739 );
1740 }
1741
DEF_TEST(SkSLGeometryShaders,r)1742 DEF_TEST(SkSLGeometryShaders, r) {
1743 test(r,
1744 "layout(points) in;"
1745 "layout(invocations = 2) in;"
1746 "layout(line_strip, max_vertices = 2) out;"
1747 "void test() {"
1748 "sk_Position = sk_in[0].sk_Position + float4(0.5, 0, 0, sk_InvocationID);"
1749 "EmitVertex();"
1750 "}"
1751 "void main() {"
1752 "sk_Position = sk_in[0].sk_Position + float4(-0.5, 0, 0, sk_InvocationID);"
1753 "EmitVertex();"
1754 "}",
1755 *SkSL::ShaderCapsFactory::NoGSInvocationsSupport(),
1756 "#version 400\n"
1757 "int sk_InvocationID;\n"
1758 "layout (points) in ;\n"
1759 "layout (line_strip, max_vertices = 4) out ;\n"
1760 "void test() {\n"
1761 " gl_Position = gl_in[0].gl_Position + vec4(0.5, 0.0, 0.0, float(sk_InvocationID));\n"
1762 " EmitVertex();\n"
1763 "}\n"
1764 "void _invoke() {\n"
1765 " gl_Position = gl_in[0].gl_Position + vec4(-0.5, 0.0, 0.0, float(sk_InvocationID));\n"
1766 " EmitVertex();\n"
1767 "}\n"
1768 "void main() {\n"
1769 " for (sk_InvocationID = 0;sk_InvocationID < 2; sk_InvocationID++) {\n"
1770 " _invoke();\n"
1771 " EndPrimitive();\n"
1772 " }\n"
1773 "}\n",
1774 SkSL::Program::kGeometry_Kind);
1775 test(r,
1776 "layout(points, invocations = 2) in;"
1777 "layout(invocations = 3) in;"
1778 "layout(line_strip, max_vertices = 2) out;"
1779 "void main() {"
1780 "sk_Position = sk_in[0].sk_Position + float4(-0.5, 0, 0, sk_InvocationID);"
1781 "EmitVertex();"
1782 "EndPrimitive();"
1783 "}",
1784 *SkSL::ShaderCapsFactory::GSInvocationsExtensionString(),
1785 "#version 400\n"
1786 "#extension GL_ARB_gpu_shader5 : require\n"
1787 "layout (points, invocations = 2) in ;\n"
1788 "layout (invocations = 3) in ;\n"
1789 "layout (line_strip, max_vertices = 2) out ;\n"
1790 "void main() {\n"
1791 " gl_Position = gl_in[0].gl_Position + vec4(-0.5, 0.0, 0.0, float(gl_InvocationID));\n"
1792 " EmitVertex();\n"
1793 " EndPrimitive();\n"
1794 "}\n",
1795 SkSL::Program::kGeometry_Kind);
1796 test(r,
1797 "layout(points, invocations = 2) in;"
1798 "layout(invocations = 3) in;"
1799 "layout(line_strip, max_vertices = 2) out;"
1800 "void main() {"
1801 "sk_Position = sk_in[0].sk_Position + float4(-0.5, 0, 0, sk_InvocationID);"
1802 "EmitVertex();"
1803 "EndPrimitive();"
1804 "}",
1805 *SkSL::ShaderCapsFactory::GeometryShaderExtensionString(),
1806 "#version 310es\n"
1807 "#extension GL_EXT_geometry_shader : require\n"
1808 "layout (points, invocations = 2) in ;\n"
1809 "layout (invocations = 3) in ;\n"
1810 "layout (line_strip, max_vertices = 2) out ;\n"
1811 "void main() {\n"
1812 " gl_Position = gl_in[0].gl_Position + vec4(-0.5, 0.0, 0.0, float(gl_InvocationID));\n"
1813 " EmitVertex();\n"
1814 " EndPrimitive();\n"
1815 "}\n",
1816 SkSL::Program::kGeometry_Kind);
1817 }
1818
DEF_TEST(SkSLTypePrecision,r)1819 DEF_TEST(SkSLTypePrecision, r) {
1820 test(r,
1821 "float f = 1;"
1822 "half h = 2;"
1823 "double d = 3;"
1824 "float2 f2 = float2(1, 2);"
1825 "half3 h3 = half3(1, 2, 3);"
1826 "double4 d4 = double4(1, 2, 3, 4);"
1827 "float2x2 f22 = float2x2(1, 2, 3, 4);"
1828 "half2x4 h24 = half2x4(1, 2, 3, 4, 5, 6, 7, 8);"
1829 "double4x2 d42 = double4x2(1, 2, 3, 4, 5, 6, 7, 8);"
1830 "void main() {"
1831 "sk_FragColor.r = half(f + h + d + f2.x + h3.x + d4.x + f22[0][0] + h24[0][0] + "
1832 "d42[0][0]);"
1833 "}",
1834 *SkSL::ShaderCapsFactory::Default(),
1835 "#version 400\n"
1836 "out vec4 sk_FragColor;\n"
1837 "float f = 1.0;\n"
1838 "float h = 2.0;\n"
1839 "double d = 3.0;\n"
1840 "vec2 f2 = vec2(1.0, 2.0);\n"
1841 "vec3 h3 = vec3(1.0, 2.0, 3.0);\n"
1842 "dvec4 d4 = dvec4(1.0, 2.0, 3.0, 4.0);\n"
1843 "mat2 f22 = mat2(1.0, 2.0, 3.0, 4.0);\n"
1844 "mat2x4 h24 = mat2x4(1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0);\n"
1845 "dmat4x2 d42 = dmat4x2(1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0);\n"
1846 "void main() {\n"
1847 " sk_FragColor.x = float(((((((double(f + h) + d) + double(f2.x)) + double(h3.x)) + "
1848 "d4.x) + double(f22[0][0])) + double(h24[0][0])) + d42[0][0]);\n"
1849 "}\n");
1850 test(r,
1851 "float f = 1;"
1852 "half h = 2;"
1853 "float2 f2 = float2(1, 2);"
1854 "half3 h3 = half3(1, 2, 3);"
1855 "float2x2 f22 = float2x2(1, 2, 3, 4);"
1856 "half2x4 h24 = half2x4(1, 2, 3, 4, 5, 6, 7, 8);"
1857 "void main() {"
1858 "sk_FragColor.r = half(f + h + f2.x + h3.x + f22[0][0] + h24[0][0]);"
1859 "}",
1860 *SkSL::ShaderCapsFactory::UsesPrecisionModifiers(),
1861 "#version 400\n"
1862 "precision mediump float;\n"
1863 "precision mediump sampler2D;\n"
1864 "out mediump vec4 sk_FragColor;\n"
1865 "highp float f = 1.0;\n"
1866 "mediump float h = 2.0;\n"
1867 "highp vec2 f2 = vec2(1.0, 2.0);\n"
1868 "mediump vec3 h3 = vec3(1.0, 2.0, 3.0);\n"
1869 "highp mat2 f22 = mat2(1.0, 2.0, 3.0, 4.0);\n"
1870 "mediump mat2x4 h24 = mat2x4(1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0);\n"
1871 "void main() {\n"
1872 " sk_FragColor.x = ((((f + h) + f2.x) + h3.x) + f22[0][0]) + h24[0][0];\n"
1873 "}\n");
1874 }
1875
DEF_TEST(SkSLNumberConversions,r)1876 DEF_TEST(SkSLNumberConversions, r) {
1877 test(r,
1878 "short s = short(sqrt(1));"
1879 "int i = int(sqrt(1));"
1880 "ushort us = ushort(sqrt(1));"
1881 "uint ui = uint(sqrt(1));"
1882 "half h = half(sqrt(1));"
1883 "float f = sqrt(1);"
1884 "short s2s = s;"
1885 "short i2s = short(i);"
1886 "short us2s = short(us);"
1887 "short ui2s = short(ui);"
1888 "short h2s = short(h);"
1889 "short f2s = short(f);"
1890 "int s2i = s;"
1891 "int i2i = i;"
1892 "int us2i = int(us);"
1893 "int ui2i = int(ui);"
1894 "int h2i = int(h);"
1895 "int f2i = int(f);"
1896 "ushort s2us = ushort(s);"
1897 "ushort i2us = ushort(i);"
1898 "ushort us2us = us;"
1899 "ushort ui2us = ushort(ui);"
1900 "ushort h2us = ushort(h);"
1901 "ushort f2us = ushort(f);"
1902 "uint s2ui = uint(s);"
1903 "uint i2ui = uint(i);"
1904 "uint us2ui = us;"
1905 "uint ui2ui = ui;"
1906 "uint h2ui = uint(h);"
1907 "uint f2ui = uint(f);"
1908 "float s2f = s;"
1909 "float i2f = i;"
1910 "float us2f = us;"
1911 "float ui2f = ui;"
1912 "float h2f = h;"
1913 "float f2f = f;"
1914 "void main() {"
1915 "sk_FragColor.r = half(s + i + us + half(ui) + h + f + s2s + i2s + us2s + ui2s + h2s + "
1916 "f2s + s2i + i2i + us2i + ui2i + h2i + f2i + s2us + i2us + us2us);"
1917 "sk_FragColor.r += half(ui2us + h2us + f2us + half(s2ui) + half(i2ui) + half(us2ui) + "
1918 "half(ui2ui) + half(h2ui) + half(f2ui) + s2f + i2f + us2f + ui2f + "
1919 "h2f + f2f);"
1920 "}",
1921 *SkSL::ShaderCapsFactory::Default(),
1922 "#version 400\n"
1923 "out vec4 sk_FragColor;\n"
1924 "int s = int(sqrt(1.0));\n"
1925 "int i = int(sqrt(1.0));\n"
1926 "uint us = uint(sqrt(1.0));\n"
1927 "uint ui = uint(sqrt(1.0));\n"
1928 "float h = sqrt(1.0);\n"
1929 "float f = sqrt(1.0);\n"
1930 "int s2s = s;\n"
1931 "int i2s = i;\n"
1932 "int us2s = int(us);\n"
1933 "int ui2s = int(ui);\n"
1934 "int h2s = int(h);\n"
1935 "int f2s = int(f);\n"
1936 "int s2i = s;\n"
1937 "int i2i = i;\n"
1938 "int us2i = int(us);\n"
1939 "int ui2i = int(ui);\n"
1940 "int h2i = int(h);\n"
1941 "int f2i = int(f);\n"
1942 "uint s2us = uint(s);\n"
1943 "uint i2us = uint(i);\n"
1944 "uint us2us = us;\n"
1945 "uint ui2us = ui;\n"
1946 "uint h2us = uint(h);\n"
1947 "uint f2us = uint(f);\n"
1948 "uint s2ui = uint(s);\n"
1949 "uint i2ui = uint(i);\n"
1950 "uint us2ui = us;\n"
1951 "uint ui2ui = ui;\n"
1952 "uint h2ui = uint(h);\n"
1953 "uint f2ui = uint(f);\n"
1954 "float s2f = float(s);\n"
1955 "float i2f = float(i);\n"
1956 "float us2f = float(us);\n"
1957 "float ui2f = float(ui);\n"
1958 "float h2f = h;\n"
1959 "float f2f = f;\n"
1960 "void main() {\n"
1961 " sk_FragColor.x = (((((((((((((((((float((s + i) + int(us)) + float(ui)) + h) + f) + "
1962 "float(s2s)) + float(i2s)) + float(us2s)) + float(ui2s)) + float(h2s)) + float(f2s)) + "
1963 "float(s2i)) + float(i2i)) + float(us2i)) + float(ui2i)) + float(h2i)) + float(f2i)) + "
1964 "float(s2us)) + float(i2us)) + float(us2us);\n"
1965 " sk_FragColor.x += (((((((((((float((ui2us + h2us) + f2us) + float(s2ui)) + "
1966 "float(i2ui)) + float(us2ui)) + float(ui2ui)) + float(h2ui)) + float(f2ui)) + s2f) + "
1967 "i2f) + us2f) + ui2f) + h2f) + f2f;\n"
1968 "}\n");
1969 }
1970
DEF_TEST(SkSLForceHighPrecision,r)1971 DEF_TEST(SkSLForceHighPrecision, r) {
1972 test(r,
1973 "void main() {\n half x = half(sqrt(1));\n half4 y = half4(x);\n sk_FragColor = y;\n }",
1974 *SkSL::ShaderCapsFactory::UsesPrecisionModifiers(),
1975 "#version 400\n"
1976 "precision mediump float;\n"
1977 "precision mediump sampler2D;\n"
1978 "out mediump vec4 sk_FragColor;\n"
1979 "void main() {\n"
1980 " mediump float x = sqrt(1.0);\n"
1981 " mediump vec4 y = vec4(x);\n"
1982 " sk_FragColor = y;\n"
1983 "}\n");
1984 SkSL::Program::Settings settings;
1985 settings.fForceHighPrecision = true;
1986 sk_sp<GrShaderCaps> caps = SkSL::ShaderCapsFactory::UsesPrecisionModifiers();
1987 settings.fCaps = caps.get();
1988 SkSL::Program::Inputs inputs;
1989 test(r,
1990 "void main() { half x = half(sqrt(1)); half4 y = half4(x); sk_FragColor = y; }",
1991 settings,
1992 "#version 400\n"
1993 "precision mediump float;\n"
1994 "precision mediump sampler2D;\n"
1995 "out mediump vec4 sk_FragColor;\n"
1996 "void main() {\n"
1997 " highp float x = sqrt(1.0);\n"
1998 " highp vec4 y = vec4(x);\n"
1999 " sk_FragColor = y;\n"
2000 "}\n",
2001 &inputs);
2002 }
2003
DEF_TEST(SkSLNormalization,r)2004 DEF_TEST(SkSLNormalization, r) {
2005 test(r,
2006 "uniform float4 sk_RTAdjust; void main() { sk_Position = half4(1); }",
2007 *SkSL::ShaderCapsFactory::Default(),
2008 "#version 400\n"
2009 "uniform vec4 sk_RTAdjust;\n"
2010 "void main() {\n"
2011 " gl_Position = vec4(1.0);\n"
2012 " gl_Position = vec4(gl_Position.xy * sk_RTAdjust.xz + gl_Position.ww * "
2013 "sk_RTAdjust.yw, 0.0, gl_Position.w);\n"
2014 "}\n",
2015 SkSL::Program::kVertex_Kind);
2016 test(r,
2017 "uniform float4 sk_RTAdjust;"
2018 "layout(points) in;"
2019 "layout(invocations = 2) in;"
2020 "layout(line_strip, max_vertices = 2) out;"
2021 "void main() {"
2022 "sk_Position = sk_in[0].sk_Position + float4(-0.5, 0, 0, sk_InvocationID);"
2023 "EmitVertex();"
2024 "sk_Position = sk_in[0].sk_Position + float4(0.5, 0, 0, sk_InvocationID);"
2025 "EmitVertex();"
2026 "EndPrimitive();"
2027 "}",
2028 *SkSL::ShaderCapsFactory::GeometryShaderSupport(),
2029 "#version 400\n"
2030 "uniform vec4 sk_RTAdjust;\n"
2031 "layout (points) in ;\n"
2032 "layout (invocations = 2) in ;\n"
2033 "layout (line_strip, max_vertices = 2) out ;\n"
2034 "void main() {\n"
2035 " gl_Position = gl_in[0].gl_Position + vec4(-0.5, 0.0, 0.0, float(gl_InvocationID));\n"
2036 " {\n"
2037 " gl_Position = vec4(gl_Position.xy * sk_RTAdjust.xz + gl_Position.ww * "
2038 "sk_RTAdjust.yw, 0.0, gl_Position.w);\n"
2039 " EmitVertex();\n"
2040 " }\n"
2041 " gl_Position = gl_in[0].gl_Position + vec4(0.5, 0.0, 0.0, float(gl_InvocationID));\n"
2042 " {\n"
2043 " gl_Position = vec4(gl_Position.xy * sk_RTAdjust.xz + gl_Position.ww * "
2044 "sk_RTAdjust.yw, 0.0, gl_Position.w);\n"
2045 " EmitVertex();\n"
2046 " }\n"
2047 " EndPrimitive();\n"
2048 "}\n",
2049 SkSL::Program::kGeometry_Kind);
2050 }
2051
DEF_TEST(SkSLTernaryLValue,r)2052 DEF_TEST(SkSLTernaryLValue, r) {
2053 test(r,
2054 "void main() { int r, g; (true ? r : g) = 1; (false ? r : g) = 0; "
2055 "sk_FragColor = half4(r, g, 1, 1); }",
2056 *SkSL::ShaderCapsFactory::Default(),
2057 "#version 400\n"
2058 "out vec4 sk_FragColor;\n"
2059 "void main() {\n"
2060 " sk_FragColor = vec4(1.0, 0.0, 1.0, 1.0);\n"
2061 "}\n");
2062 test(r,
2063 "void main() { half r, g; (true ? r : g) = half(sqrt(1)); (false ? r : g) = half(sqrt(0));"
2064 "sk_FragColor = half4(r, g, 1, 1); }",
2065 *SkSL::ShaderCapsFactory::Default(),
2066 "#version 400\n"
2067 "out vec4 sk_FragColor;\n"
2068 "void main() {\n"
2069 " float r, g;\n"
2070 " r = sqrt(1.0);\n"
2071 " g = sqrt(0.0);\n"
2072 " sk_FragColor = vec4(r, g, 1.0, 1.0);\n"
2073 "}\n");
2074 test(r,
2075 "void main() {"
2076 "half r, g;"
2077 "(sqrt(1) > 0 ? r : g) = half(sqrt(1));"
2078 "(sqrt(0) > 0 ? r : g) = half(sqrt(0));"
2079 "sk_FragColor = half4(r, g, 1, 1);"
2080 "}",
2081 *SkSL::ShaderCapsFactory::Default(),
2082 "#version 400\n"
2083 "out vec4 sk_FragColor;\n"
2084 "void main() {\n"
2085 " float r, g;\n"
2086 " sqrt(1.0) > 0.0 ? r : g = sqrt(1.0);\n"
2087 " sqrt(0.0) > 0.0 ? r : g = sqrt(0.0);\n"
2088 " sk_FragColor = vec4(r, g, 1.0, 1.0);\n"
2089 "}\n");
2090 }
2091
DEF_TEST(SkSLIncompleteShortIntPrecision,r)2092 DEF_TEST(SkSLIncompleteShortIntPrecision, r) {
2093 test(r,
2094 "uniform sampler2D tex;"
2095 "in float2 texcoord;"
2096 "in short2 offset;"
2097 "void main() {"
2098 " short scalar = offset.y;"
2099 " sk_FragColor = sample(tex, texcoord + float2(offset * scalar));"
2100 "}",
2101 *SkSL::ShaderCapsFactory::UsesPrecisionModifiers(),
2102 "#version 400\n"
2103 "precision mediump float;\n"
2104 "precision mediump sampler2D;\n"
2105 "out mediump vec4 sk_FragColor;\n"
2106 "uniform sampler2D tex;\n"
2107 "in highp vec2 texcoord;\n"
2108 "in mediump ivec2 offset;\n"
2109 "void main() {\n"
2110 " mediump int scalar = offset.y;\n"
2111 " sk_FragColor = texture(tex, texcoord + vec2(offset * scalar));\n"
2112 "}\n",
2113 SkSL::Program::kFragment_Kind);
2114 test(r,
2115 "uniform sampler2D tex;"
2116 "in float2 texcoord;"
2117 "in short2 offset;"
2118 "void main() {"
2119 " short scalar = offset.y;"
2120 " sk_FragColor = sample(tex, texcoord + float2(offset * scalar));"
2121 "}",
2122 *SkSL::ShaderCapsFactory::IncompleteShortIntPrecision(),
2123 "#version 310es\n"
2124 "precision mediump float;\n"
2125 "precision mediump sampler2D;\n"
2126 "out mediump vec4 sk_FragColor;\n"
2127 "uniform sampler2D tex;\n"
2128 "in highp vec2 texcoord;\n"
2129 "in highp ivec2 offset;\n"
2130 "void main() {\n"
2131 " highp int scalar = offset.y;\n"
2132 " sk_FragColor = texture(tex, texcoord + vec2(offset * scalar));\n"
2133 "}\n",
2134 SkSL::Program::kFragment_Kind);
2135 }
2136
DEF_TEST(SkSLFrExp,r)2137 DEF_TEST(SkSLFrExp, r) {
2138 test(r,
2139 "void main() {"
2140 " int exp;"
2141 " float foo = frexp(0.5, exp);"
2142 " sk_FragColor = half4(exp);"
2143 "}",
2144 *SkSL::ShaderCapsFactory::Default(),
2145 "#version 400\n"
2146 "out vec4 sk_FragColor;\n"
2147 "void main() {\n"
2148 " int exp;\n"
2149 " float foo = frexp(0.5, exp);\n"
2150 " sk_FragColor = vec4(float(exp));\n"
2151 "}\n");
2152 }
2153
DEF_TEST(SkSLWorkaroundAddAndTrueToLoopCondition,r)2154 DEF_TEST(SkSLWorkaroundAddAndTrueToLoopCondition, r) {
2155 test(r,
2156 "void main() {"
2157 " int c = 0;"
2158 " for (int i = 0; i < 4 || c < 10; ++i) {"
2159 " c += 1;"
2160 " }"
2161 "}",
2162 *SkSL::ShaderCapsFactory::AddAndTrueToLoopCondition(),
2163 "#version 400\n"
2164 "void main() {\n"
2165 " int c = 0;\n"
2166 " for (int i = 0;(i < 4 || c < 10) && true; ++i) {\n"
2167 " c += 1;\n"
2168 " }\n"
2169 "}\n",
2170 SkSL::Program::kFragment_Kind
2171 );
2172 }
2173
DEF_TEST(SkSLWorkaroundUnfoldShortCircuitAsTernary,r)2174 DEF_TEST(SkSLWorkaroundUnfoldShortCircuitAsTernary, r) {
2175 test(r,
2176 "uniform bool x;"
2177 "uniform bool y;"
2178 "uniform int i;"
2179 "uniform int j;"
2180 "void main() {"
2181 " bool andXY = x && y;"
2182 " bool orXY = x || y;"
2183 " bool combo = (x && y) || (x || y);"
2184 " bool prec = (i + j == 3) && y;"
2185 " while (andXY && orXY && combo && prec) {"
2186 " sk_FragColor = half4(0);"
2187 " break;"
2188 " }"
2189 "}",
2190 *SkSL::ShaderCapsFactory::UnfoldShortCircuitAsTernary(),
2191 "#version 400\n"
2192 "out vec4 sk_FragColor;\n"
2193 "uniform bool x;\n"
2194 "uniform bool y;\n"
2195 "uniform int i;\n"
2196 "uniform int j;\n"
2197 "void main() {\n"
2198 " bool andXY = x ? y : false;\n"
2199 " bool orXY = x ? true : y;\n"
2200 " bool combo = (x ? y : false) ? true : (x ? true : y);\n"
2201 " bool prec = i + j == 3 ? y : false;\n"
2202 " while (((andXY ? orXY : false) ? combo : false) ? prec : false) {\n"
2203 " sk_FragColor = vec4(0.0);\n"
2204 " break;\n"
2205 " }\n"
2206 "}\n",
2207 SkSL::Program::kFragment_Kind
2208 );
2209 }
2210
DEF_TEST(SkSLWorkaroundEmulateAbsIntFunction,r)2211 DEF_TEST(SkSLWorkaroundEmulateAbsIntFunction, r) {
2212 test(r,
2213 "uniform int i;"
2214 "uniform float f;"
2215 "void main() {"
2216 " float output = abs(f) + abs(i);"
2217 " sk_FragColor = half4(half(output));"
2218 "}",
2219 *SkSL::ShaderCapsFactory::EmulateAbsIntFunction(),
2220 "#version 400\n"
2221 "int _absemulation(int x) {\n"
2222 " return x * sign(x);\n"
2223 "}\n"
2224 "out vec4 sk_FragColor;\n"
2225 "uniform int i;\n"
2226 "uniform float f;\n"
2227 "void main() {\n"
2228 " float output = abs(f) + float(_absemulation(i));\n"
2229 " sk_FragColor = vec4(output);\n"
2230 "}\n",
2231 SkSL::Program::kFragment_Kind
2232 );
2233 }
2234
DEF_TEST(SkSLWorkaroundRewriteDoWhileLoops,r)2235 DEF_TEST(SkSLWorkaroundRewriteDoWhileLoops, r) {
2236 test(r,
2237 "void main() {"
2238 " int i = 0;"
2239 " do {"
2240 " ++i;"
2241 " do {"
2242 " i++;"
2243 " } while (true);"
2244 " } while (i < 10);"
2245 " sk_FragColor = half4(i);"
2246 "}",
2247 *SkSL::ShaderCapsFactory::RewriteDoWhileLoops(),
2248 "#version 400\n"
2249 "out vec4 sk_FragColor;\n"
2250 "void main() {\n"
2251 " int i = 0;\n"
2252 " bool _tmpLoopSeenOnce0 = false;\n"
2253 " while (true) {\n"
2254 " if (_tmpLoopSeenOnce0) {\n"
2255 " if (!(i < 10)) {\n"
2256 " break;\n"
2257 " }\n"
2258 " }\n"
2259 " _tmpLoopSeenOnce0 = true;\n"
2260 " {\n"
2261 " ++i;\n"
2262 " bool _tmpLoopSeenOnce1 = false;\n"
2263 " while (true) {\n"
2264 " if (_tmpLoopSeenOnce1) {\n"
2265 " if (!true) {\n"
2266 " break;\n"
2267 " }\n"
2268 " }\n"
2269 " _tmpLoopSeenOnce1 = true;\n"
2270 " {\n"
2271 " i++;\n"
2272 " }\n"
2273 " }\n"
2274 " }\n"
2275 " }\n"
2276 " sk_FragColor = vec4(float(i));\n"
2277 "}\n",
2278 SkSL::Program::kFragment_Kind
2279 );
2280 }
2281
DEF_TEST(SkSLWorkaroundRemovePowWithConstantExponent,r)2282 DEF_TEST(SkSLWorkaroundRemovePowWithConstantExponent, r) {
2283 test(r,
2284 "uniform float x;"
2285 "uniform float y;"
2286 "void main() {"
2287 " float z = pow(x + 1.0, y + 2.0);"
2288 " sk_FragColor = half4(half(z));"
2289 "}",
2290 *SkSL::ShaderCapsFactory::RemovePowWithConstantExponent(),
2291 "#version 400\n"
2292 "out vec4 sk_FragColor;\n"
2293 "uniform float x;\n"
2294 "uniform float y;\n"
2295 "void main() {\n"
2296 " float z = exp2((y + 2.0) * log2(x + 1.0));\n"
2297 " sk_FragColor = vec4(z);\n"
2298 "}\n",
2299 SkSL::Program::kFragment_Kind
2300 );
2301 }
2302
DEF_TEST(SkSLSwizzleConstants,r)2303 DEF_TEST(SkSLSwizzleConstants, r) {
2304 test(r,
2305 "void main() {"
2306 " half4 v = half4(half(sqrt(1)));"
2307 " sk_FragColor = v.rgb1;"
2308 " half4 c = half4(1);"
2309 " sk_FragColor = c.rgb0;"
2310 "}",
2311 *SkSL::ShaderCapsFactory::RemovePowWithConstantExponent(),
2312 "#version 400\n"
2313 "out vec4 sk_FragColor;\n"
2314 "void main() {\n"
2315 " vec4 v = vec4(sqrt(1.0));\n"
2316 " sk_FragColor = vec4(v.xyz, 1);\n"
2317 " sk_FragColor = vec4(vec4(1.0).xyz, 0);\n"
2318 "}\n",
2319 SkSL::Program::kFragment_Kind
2320 );
2321 }
2322
DEF_TEST(SkSLNegatedVectorLiteral,r)2323 DEF_TEST(SkSLNegatedVectorLiteral, r) {
2324 test(r,
2325 "void main() {"
2326 " if (half4(1) == half4(-half2(-1), half2(1)))"
2327 " sk_FragColor = half4(0, 1, 0, 1);"
2328 " else"
2329 " sk_FragColor = half4(1, 0, 0, 1);"
2330 "}",
2331 *SkSL::ShaderCapsFactory::Default(),
2332 "#version 400\n"
2333 "out vec4 sk_FragColor;\n"
2334 "void main() {\n"
2335 " sk_FragColor = vec4(0.0, 1.0, 0.0, 1.0);\n"
2336 "}\n");
2337 }
2338