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// unit-test-type-conformance.cpp
#include "../../source/core/slang-io.h"
#include "../../source/core/slang-process.h"
#include "slang-com-ptr.h"
#include "slang.h"
#include "unit-test/slang-unit-test.h"
#include <stdio.h>
#include <stdlib.h>
using namespace Slang;
// Test the compilation API for adding type conformances.
SLANG_UNIT_TEST(typeConformance)
{
const char* userSourceBody = R"(
struct SurfaceInteraction {
};
__generic<T>
struct InterfacePtr {
T *dptr;
};
struct BsdfSample {
float3 wo;
float pdf;
bool delta;
float3 spectrum;
};
interface IBsdf {
BsdfSample sample(SurfaceInteraction si, float2 uv);
};
struct Diffuse : IBsdf {
float3 _reflectance;
BsdfSample sample(SurfaceInteraction si, float2 uv) {
BsdfSample sample;
sample.wo = float3(uv, 1.0f);
sample.pdf = uv.x;
sample.delta = false;
sample.spectrum = _reflectance;
return sample;
}
};
interface IShape {
property InterfacePtr<IBsdf> bsdf;
};
struct Mesh : IShape {
InterfacePtr<IBsdf> bsdf;
};
struct Sphere : IShape {
InterfacePtr<IBsdf> bsdf;
};
[[vk::push_constant]] IShape *shapes;
struct Path {
float3 sample(IShape *shapes) {
float3 spectrum = { 0.0f, 0.0f, 0.0f };
float3 throughput = { 1.0f, 1.0f, 1.0f };
while (true) {
SurfaceInteraction si = {};
if (true) {
const float p = min(max(throughput.r, max(throughput.g, throughput.b)), 0.95f);
if (1.0f >= p) return spectrum;
}
BsdfSample sample = shapes[0].bsdf.dptr.sample(si, float2(1.0f));
throughput *= sample.spectrum;
}
return spectrum;
}
};
[[vk::binding(0, 0)]] RWTexture2D<float4> output;
[shader("compute"), numthreads(1, 1, 1)]
void computeMain() {
Path path = Path();
float3 spectrum = path.sample(nullptr);
output[uint2(0,0)] += float4(spectrum, 1.0f);
}
)";
ComPtr<slang::IGlobalSession> globalSession;
SlangGlobalSessionDesc globalDesc = {};
globalDesc.enableGLSL = true;
SLANG_CHECK(slang_createGlobalSession2(&globalDesc, globalSession.writeRef()) == SLANG_OK);
slang::TargetDesc targetDesc = {};
targetDesc.format = SLANG_SPIRV;
targetDesc.profile = globalSession->findProfile("spirv_1_5");
targetDesc.compilerOptionEntryCount = 1;
slang::CompilerOptionEntry entry;
entry.name = slang::CompilerOptionName::Optimization;
entry.value.kind = slang::CompilerOptionValueKind::Int;
entry.value.intValue0 = 0;
targetDesc.compilerOptionEntries = &entry;
slang::SessionDesc sessionDesc = {};
sessionDesc.targetCount = 1;
sessionDesc.targets = &targetDesc;
ComPtr<slang::ISession> session;
SLANG_CHECK(globalSession->createSession(sessionDesc, session.writeRef()) == SLANG_OK);
ComPtr<slang::IBlob> diagnosticBlob;
auto module = session->loadModuleFromSourceString(
"m",
"m.slang",
userSourceBody,
diagnosticBlob.writeRef());
SLANG_CHECK(module != nullptr);
ComPtr<slang::IEntryPoint> entryPoint;
module->findAndCheckEntryPoint(
"computeMain",
SLANG_STAGE_COMPUTE,
entryPoint.writeRef(),
diagnosticBlob.writeRef());
auto layout = module->getLayout();
auto diffuse = layout->findTypeByName("Diffuse");
auto ibsdf = layout->findTypeByName("IBsdf");
auto ishape = layout->findTypeByName("IShape");
auto mesh = layout->findTypeByName("Mesh");
auto sphere = layout->findTypeByName("Sphere");
ComPtr<slang::ITypeConformance> diffuseIBsdf;
ComPtr<slang::ITypeConformance> meshIShape;
ComPtr<slang::ITypeConformance> sphereIShape;
session->createTypeConformanceComponentType(
diffuse,
ibsdf,
diffuseIBsdf.writeRef(),
0,
diagnosticBlob.writeRef());
session->createTypeConformanceComponentType(
mesh,
ishape,
meshIShape.writeRef(),
0,
diagnosticBlob.writeRef());
session->createTypeConformanceComponentType(
sphere,
ishape,
sphereIShape.writeRef(),
0,
diagnosticBlob.writeRef());
slang::IComponentType* componentTypes[5] =
{module, entryPoint.get(), diffuseIBsdf, meshIShape, sphereIShape};
ComPtr<slang::IComponentType> composedProgram;
session->createCompositeComponentType(
componentTypes,
5,
composedProgram.writeRef(),
diagnosticBlob.writeRef());
ComPtr<slang::IComponentType> linkedProgram;
composedProgram->link(linkedProgram.writeRef(), diagnosticBlob.writeRef());
ComPtr<slang::IBlob> code;
linkedProgram->getTargetCode(0, code.writeRef(), diagnosticBlob.writeRef());
SLANG_CHECK(code != nullptr);
}
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