First Commit

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

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+# Copyright 2018 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 with inputs and outputs explicit locations.
+GLSL_SHADER_IO_WITHOUT_LOCATIONS = """#version 310 es
+  in vec4 m_in;
+  in vec4 m_in1;
+  out vec4 m_out;
+  out vec4 m_out1;
+  void main() {
+    m_out = m_in;
+    m_out1 = m_in1;
+  }"""
+
+
+# An HLSL fragment shader with inputs and outputs explicit locations.
+HLSL_SHADER_IO_WITHOUT_LOCATIONS = """
+  float4 Foo(float4 a, float4 b) : COLOR0 {
+    return a + b;
+  }"""
+
+
+@inside_glslc_testsuite('OptionFAutoMapLocations')
+class MissingLocationsResultsInError(expect.ErrorMessageSubstr):
+    """Tests that compilation fails when inputs or outputs have no location."""
+
+    shader = FileShader(GLSL_SHADER_IO_WITHOUT_LOCATIONS, '.vert')
+    glslc_args = ['-S', shader]
+    expected_error_substr = "SPIR-V requires location for user input/output"
+
+
+@inside_glslc_testsuite('OptionFAutoMapLocations')
+class FAutoMapLocationsGeneratesLocationsCheckInput(expect.ValidAssemblyFileWithSubstr):
+    """Tests that the compiler generates locations upon request:  Input 0"""
+
+    shader = FileShader(GLSL_SHADER_IO_WITHOUT_LOCATIONS, '.vert')
+    glslc_args = ['-S', shader, '-fauto-map-locations']
+    expected_assembly_substr = "OpDecorate %m_in Location 0"
+
+
+@inside_glslc_testsuite('OptionFAutoMapLocations')
+class FAutoMapLocationsGeneratesLocationsCheckOutput0(expect.ValidAssemblyFileWithSubstr):
+    """Tests that the compiler generates locations upon request:  Output 0"""
+
+    shader = FileShader(GLSL_SHADER_IO_WITHOUT_LOCATIONS, '.vert')
+    glslc_args = ['-S', shader, '-fauto-map-locations']
+    expected_assembly_substr = "OpDecorate %m_out Location 0"
+
+
+# Currently Glslang only generates Location 0.
+# See https://github.com/KhronosGroup/glslang/issues/1261
+# TODO(dneto): Write tests that check Location 1 is generated for inputs and
+# outputs.
+
+
+# Glslang's HLSL compiler automatically assigns locations inptus and outputs.
+@inside_glslc_testsuite('OptionFAutoMapLocations')
+class HLSLCompilerGeneratesLocationsCheckInput0(expect.ValidAssemblyFileWithSubstr):
+    """Tests that the HLSL compiler generates locations automatically: Input 0."""
+
+    shader = FileShader(HLSL_SHADER_IO_WITHOUT_LOCATIONS, '.hlsl')
+    glslc_args = ['-S', '-fshader-stage=frag', '-fentry-point=Foo', shader]
+    expected_assembly_substr = "OpDecorate %a Location 0"
+
+
+@inside_glslc_testsuite('OptionFAutoMapLocations')
+class HLSLCompilerGeneratesLocationsCheckOutput(expect.ValidAssemblyFileWithSubstr):
+    """Tests that the HLSL compiler generates locations automatically: Output."""
+
+    shader = FileShader(HLSL_SHADER_IO_WITHOUT_LOCATIONS, '.hlsl')
+    glslc_args = ['-S', '-fshader-stage=frag', '-fentry-point=Foo', shader]
+    expected_assembly_substr = "OpDecorate %_entryPointOutput Location 0"