151 lines
1.8 KiB
C++
151 lines
1.8 KiB
C++
#include <Engine/Shader/ShaderUtils.hpp>
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#include <Nazara/Core/File.hpp>
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#include <Nazara/Core/StringExt.hpp>
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#include <Nazara/Shader/ShaderBuilder.hpp>
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#include <Nazara/Shader/ShaderLangParser.hpp>
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#include <catch2/catch.hpp>
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#include <cctype>
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TEST_CASE("branching", "[Shader]")
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{
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WHEN("using a simple branch")
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{
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std::string_view nzslSource = R"(
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struct inputStruct
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{
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value: f32
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}
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external
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{
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[set(0), binding(0)] data: uniform<inputStruct>
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}
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[entry(frag)]
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fn main()
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{
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let value: f32;
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if (data.value > 0.0)
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value = 1.0;
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else
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value = 0.0;
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}
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)";
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Nz::ShaderAst::StatementPtr shader = Nz::ShaderLang::Parse(nzslSource);
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ExpectGLSL(*shader, R"(
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void main()
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{
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float value;
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if (data.value > (0.000000))
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{
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value = 1.000000;
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}
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else
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{
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value = 0.000000;
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}
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}
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)");
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ExpectNZSL(*shader, R"(
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[entry(frag)]
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fn main()
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{
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let value: f32;
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if (data.value > (0.000000))
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{
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value = 1.000000;
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}
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else
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{
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value = 0.000000;
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}
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}
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)");
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ExpectSpirV(*shader, R"(
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OpFunction
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OpLabel
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OpVariable
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OpAccessChain
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OpLoad
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OpFOrdGreaterThanEqual
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OpSelectionMerge
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OpBranchConditional
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OpLabel
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OpStore
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OpBranch
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OpLabel
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OpStore
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OpBranch
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OpLabel
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OpReturn
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OpFunctionEnd)");
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}
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WHEN("discarding in a branch")
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{
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std::string_view nzslSource = R"(
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struct inputStruct
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{
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value: f32
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}
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external
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{
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[set(0), binding(0)] data: uniform<inputStruct>
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}
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[entry(frag)]
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fn main()
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{
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if (data.value > 0.0)
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discard;
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}
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)";
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Nz::ShaderAst::StatementPtr shader = Nz::ShaderLang::Parse(nzslSource);
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ExpectGLSL(*shader, R"(
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void main()
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{
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if (data.value > (0.000000))
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{
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discard;
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}
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}
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)");
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ExpectNZSL(*shader, R"(
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[entry(frag)]
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fn main()
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{
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if (data.value > (0.000000))
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{
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discard;
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}
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}
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)");
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ExpectSpirV(*shader, R"(
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OpFunction
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OpLabel
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OpAccessChain
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OpLoad
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OpFOrdGreaterThanEqual
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OpSelectionMerge
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OpBranchConditional
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OpLabel
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OpKill
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OpLabel
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OpReturn
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OpFunctionEnd)");
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}
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}
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