First Commit

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

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+# Copyright 2016 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
+
+MINIMAL_SHADER = "#version 140\nvoid main(){}"
+# This one is valid GLSL but not valid HLSL.
+GLSL_VERTEX_SHADER = "#version 140\nvoid main(){ gl_Position = vec4(1.0);}"
+# This one is valid HLSL but not valid GLSL.
+HLSL_VERTEX_SHADER = "float4 EntryPoint() : SV_POSITION { return float4(1.0); }"
+HLSL_VERTEX_SHADER_WITH_MAIN = "float4 main() : SV_POSITION { return float4(1.0); }"
+HLSL_VERTEX_SHADER_WITH_FOOBAR = "float4 Foobar() : SV_POSITION { return float4(1.0); }"
+
+# Expected assembly code within certain shaders.
+ASSEMBLY_ENTRY_POINT = "OpEntryPoint Vertex %EntryPoint \"EntryPoint\""
+ASSEMBLY_MAIN = "OpEntryPoint Vertex %main \"main\""
+ASSEMBLY_FOOBAR = "OpEntryPoint Vertex %Foobar \"Foobar\""
+
+
+@inside_glslc_testsuite('OptionFEntryPoint')
+class TestEntryPointDefaultsToMainForGlsl(expect.ValidAssemblyFileWithSubstr):
+    """Tests that entry point name defaults to "main" in a GLSL shader."""
+
+    shader = FileShader(GLSL_VERTEX_SHADER, '.vert')
+    glslc_args = ['-S', shader]
+    expected_assembly_substr = ASSEMBLY_MAIN
+
+
+@inside_glslc_testsuite('OptionFEntryPoint')
+class TestEntryPointDefaultsToMainForHlsl(expect.ValidAssemblyFileWithSubstr):
+    """Tests that entry point name defaults to "main" in an HLSL shader."""
+
+    shader = FileShader(HLSL_VERTEX_SHADER_WITH_MAIN, '.vert')
+    glslc_args = ['-x', 'hlsl', '-S', shader]
+    expected_assembly_substr = ASSEMBLY_MAIN
+
+
+@inside_glslc_testsuite('OptionFEntryPoint')
+class TestFEntryPointMainOnGlslShader(expect.ValidAssemblyFileWithSubstr):
+    """Tests -fentry-point=main with a GLSL shader."""
+
+    shader = FileShader(GLSL_VERTEX_SHADER, '.vert')
+    glslc_args = ['-fentry-point=main', '-S', shader]
+    expected_assembly_substr = ASSEMBLY_MAIN
+
+
+@inside_glslc_testsuite('OptionFEntryPoint')
+class TestFEntryPointMainOnHlslShaderNotMatchingSource(expect.ValidObjectFileWithWarning):
+    """Tests -x hlsl on an HLSL shader with -fentry-point=main
+    not matching the source."""
+
+    shader = FileShader(HLSL_VERTEX_SHADER, '.vert')
+    glslc_args = ['-x', 'hlsl', '-fentry-point=main', '-c', shader]
+    expected_warning = [shader,
+                        ': warning: Linking vertex stage: Entry point not found\n'
+                        '1 warning generated.\n']
+
+
+@inside_glslc_testsuite('OptionFEntryPoint')
+class TestFEntryPointSpecifiedOnHlslShaderInDisassembly(expect.ValidObjectFileWithAssemblySubstr):
+    """Tests -x hlsl on an HLSL shader with -fentry-point=EntryPoint
+    matching source."""
+
+    shader = FileShader(HLSL_VERTEX_SHADER, '.vert', assembly_substr=ASSEMBLY_ENTRY_POINT)
+    glslc_args = ['-x', 'hlsl', '-fentry-point=EntryPoint', '-c', shader]
+
+
+@inside_glslc_testsuite('OptionFEntryPoint')
+class TestFEntryPointAffectsSubsequentShaderFiles(expect.ValidObjectFileWithAssemblySubstr):
+    """Tests -x hlsl affects several subsequent shader source files."""
+
+    shader1 = FileShader(HLSL_VERTEX_SHADER, '.vert', assembly_substr=ASSEMBLY_ENTRY_POINT)
+    shader2 = FileShader(HLSL_VERTEX_SHADER, '.vert', assembly_substr=ASSEMBLY_ENTRY_POINT)
+    glslc_args = ['-x', 'hlsl', '-fentry-point=EntryPoint', '-c', shader1, shader2]
+
+
+@inside_glslc_testsuite('OptionFEntryPoint')
+class TestFEntryPointOverridesItself(expect.ValidObjectFileWithAssemblySubstr):
+    """Tests that a later -fentry-point option overrides an earlier use."""
+
+    shader = FileShader(HLSL_VERTEX_SHADER, '.vert', assembly_substr=ASSEMBLY_ENTRY_POINT)
+    glslc_args = ['-x', 'hlsl', '-fentry-point=foobar', '-fentry-point=EntryPoint',
+                  '-c', shader]
+
+
+@inside_glslc_testsuite('OptionFEntryPoint')
+class TestFEntryPointDefaultAndTwoOthers(expect.ValidObjectFileWithAssemblySubstr):
+    """Tests three shaders with different entry point names. The first uses "main"
+    with default entry point processing, and the remaining shaders get their
+    own -fentry-point argument."""
+
+    shaderMain = FileShader(HLSL_VERTEX_SHADER_WITH_MAIN, '.vert',
+                            assembly_substr=ASSEMBLY_MAIN)
+    shaderEntryPoint = FileShader(HLSL_VERTEX_SHADER, '.vert',
+                                  assembly_substr=ASSEMBLY_ENTRY_POINT)
+    shaderFoobar = FileShader(HLSL_VERTEX_SHADER_WITH_FOOBAR, '.vert',
+                              assembly_substr=ASSEMBLY_FOOBAR)
+    glslc_args = ['-x', 'hlsl', '-c', shaderMain,
+                  '-fentry-point=EntryPoint', shaderEntryPoint,
+                  '-fentry-point=Foobar', shaderFoobar]