First Commit

3rdparty/shaderc/glslc/test/option_dash_fnan_clamp.py

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+# Copyright 2019 The Shaderc Authors. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import expect
+from glslc_test_framework import inside_glslc_testsuite
+from placeholder import FileShader
+
+# A GLSL shader using the clamp, max, and min builtin functions.
+GLSL_FRAG_SHADER_WITH_CLAMP = """#version 450
+layout(location=0) in vec4 i;
+layout(location=0) out vec4 o;
+void main() {
+  o = clamp(i, vec4(0.5), vec4(1.0))
+  +   max(i, vec4(0.5))
+  +   min(i, vec4(0.5));
+}
+"""
+
+
+@inside_glslc_testsuite('OptionFNanClamp')
+class TestClampMapsToFClampByDefault(expect.ValidAssemblyFileWithSubstr):
+    shader = FileShader(GLSL_FRAG_SHADER_WITH_CLAMP, '.frag')
+    glslc_args = ['-S', shader]
+    expected_assembly_substr = 'OpExtInst %v4float %1 FClamp'
+
+
+@inside_glslc_testsuite('OptionFNanClamp')
+class TestMaxMapsToFMaxByDefault(expect.ValidAssemblyFileWithSubstr):
+    shader = FileShader(GLSL_FRAG_SHADER_WITH_CLAMP, '.frag')
+    glslc_args = ['-S', shader]
+    expected_assembly_substr = 'OpExtInst %v4float %1 FMax'
+
+
+@inside_glslc_testsuite('OptionFNanClamp')
+class TestMinMapsToFMinByDefault(expect.ValidAssemblyFileWithSubstr):
+    shader = FileShader(GLSL_FRAG_SHADER_WITH_CLAMP, '.frag')
+    glslc_args = ['-S', shader]
+    expected_assembly_substr = 'OpExtInst %v4float %1 FMin'
+
+
+@inside_glslc_testsuite('OptionFNanClamp')
+class TestClampMapsToNClampWithFlag(expect.ValidAssemblyFileWithSubstr):
+    shader = FileShader(GLSL_FRAG_SHADER_WITH_CLAMP, '.frag')
+    glslc_args = ['-S', '-fnan-clamp', shader]
+    expected_assembly_substr = 'OpExtInst %v4float %1 NClamp'
+
+@inside_glslc_testsuite('OptionFNanClamp')
+class TestMaxMapsToNMaxWithFlag(expect.ValidAssemblyFileWithSubstr):
+    shader = FileShader(GLSL_FRAG_SHADER_WITH_CLAMP, '.frag')
+    glslc_args = ['-S', '-fnan-clamp', shader]
+    expected_assembly_substr = 'OpExtInst %v4float %1 NMax'
+
+
+@inside_glslc_testsuite('OptionFNanClamp')
+class TestMinMapsToNMinWithFlag(expect.ValidAssemblyFileWithSubstr):
+    shader = FileShader(GLSL_FRAG_SHADER_WITH_CLAMP, '.frag')
+    glslc_args = ['-S', '-fnan-clamp', shader]
+    expected_assembly_substr = 'OpExtInst %v4float %1 NMin'