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      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 
     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     std::unique_ptr<SkSL::Program> program = compiler.convertProgram(SkSL::Program::kFragment_Kind,
     20                                                                      SkSL::String(src), settings);
     21     if (program) {
     22         SkSL::String ignored;
     23         compiler.toSPIRV(*program, &ignored);
     24     }
     25     SkSL::String skError(error);
     26     if (compiler.errorText() != skError) {
     27         SkDebugf("SKSL ERROR:\n    source: %s\n    expected: %s    received: %s", src, error,
     28                  compiler.errorText().c_str());
     29     }
     30     REPORTER_ASSERT(r, compiler.errorText() == skError);
     31 }
     32 
     33 DEF_TEST(SkSLBadOffset, r) {
     34     test_failure(r,
     35                  "struct Bad { layout (offset = 5) int x; } bad; void main() { bad.x = 5; "
     36                  "sk_FragColor.r = float(bad.x); }",
     37                  "error: 1: offset of field 'x' must be a multiple of 4\n1 error\n");
     38     test_failure(r,
     39                  "struct Bad { int x; layout (offset = 0) int y; } bad; void main() { bad.x = 5; "
     40                  "sk_FragColor.r = float(bad.x); }",
     41                  "error: 1: offset of field 'y' must be at least 4\n1 error\n");
     42 }
     43 
     44 #endif
     45