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// unit-test-parameter-usage-reflection.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 that the isParameterLocationUsed API works.
SLANG_UNIT_TEST(isParameterLocationUsedReflection)
{
// Source for a module that contains an undecorated entrypoint.
const char* userSourceBody = R"(
Texture2D g_tex : register(t0);
struct Params {
Texture2D tex2;
Texture2D tex3;
};
struct Material
{
float2 uvScale;
float2 uvBias;
}
ParameterBlock<Params> gParams;
ConstantBuffer<Material> gcMaterial;
ParameterBlock<Material> gMaterial;
[shader("fragment")]
float4 fragMain(float4 pos:SV_Position, float unused:COLOR0, float4 used:COLOR1) : SV_Target
{
return g_tex.Load(int3(0, 0, 0)) + gParams.tex3.Load(int3(0)) + used + gMaterial.uvScale.x + gcMaterial.uvBias.x;
}
)";
auto moduleName = "moduleG" + String(Process::getId());
String userSource = "import " + moduleName + ";\n" + userSourceBody;
ComPtr<slang::IGlobalSession> globalSession;
SLANG_CHECK(slang_createGlobalSession(SLANG_API_VERSION, globalSession.writeRef()) == SLANG_OK);
slang::TargetDesc targetDesc = {};
targetDesc.format = SLANG_SPIRV;
targetDesc.profile = globalSession->findProfile("spirv_1_5");
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(
"fragMain",
SLANG_STAGE_FRAGMENT,
entryPoint.writeRef(),
diagnosticBlob.writeRef());
SLANG_CHECK(entryPoint != nullptr);
ComPtr<slang::IComponentType> compositeProgram;
slang::IComponentType* components[] = {module, entryPoint.get()};
session->createCompositeComponentType(
components,
2,
compositeProgram.writeRef(),
diagnosticBlob.writeRef());
SLANG_CHECK(compositeProgram != nullptr);
ComPtr<slang::IComponentType> linkedProgram;
compositeProgram->link(linkedProgram.writeRef(), nullptr);
ComPtr<slang::IMetadata> metadata;
linkedProgram->getTargetMetadata(0, metadata.writeRef(), nullptr);
bool isUsed = false;
metadata->isParameterLocationUsed(SLANG_PARAMETER_CATEGORY_DESCRIPTOR_TABLE_SLOT, 0, 0, isUsed);
SLANG_CHECK(isUsed);
metadata->isParameterLocationUsed(SLANG_PARAMETER_CATEGORY_DESCRIPTOR_TABLE_SLOT, 0, 1, isUsed);
SLANG_CHECK(isUsed);
metadata->isParameterLocationUsed(SLANG_PARAMETER_CATEGORY_DESCRIPTOR_TABLE_SLOT, 0, 2, isUsed);
SLANG_CHECK(!isUsed);
metadata->isParameterLocationUsed(SLANG_PARAMETER_CATEGORY_DESCRIPTOR_TABLE_SLOT, 1, 0, isUsed);
SLANG_CHECK(!isUsed);
metadata->isParameterLocationUsed(SLANG_PARAMETER_CATEGORY_DESCRIPTOR_TABLE_SLOT, 1, 1, isUsed);
SLANG_CHECK(isUsed);
metadata->isParameterLocationUsed(SLANG_PARAMETER_CATEGORY_DESCRIPTOR_TABLE_SLOT, 2, 0, isUsed);
SLANG_CHECK(isUsed);
metadata->isParameterLocationUsed(SLANG_PARAMETER_CATEGORY_VARYING_INPUT, 0, 0, isUsed);
SLANG_CHECK(!isUsed);
metadata->isParameterLocationUsed(SLANG_PARAMETER_CATEGORY_VARYING_INPUT, 0, 1, isUsed);
SLANG_CHECK(isUsed);
}
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