// unit-test-image-format-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 getBindingRangeImageFormat API works.

SLANG_UNIT_TEST(imageFormatReflection)
{
    // Source for a module that contains an undecorated entrypoint.
    const char* userSourceBody = R"(
        Texture2D<uint4> g_tex : register(t0);
        float4 fragMain(float4 pos:SV_Position) : SV_Target
        {
            return pos;
        }
        )";

    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_HLSL;
    targetDesc.profile = globalSession->findProfile("sm_5_0");
    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);

    auto layout = compositeProgram->getLayout(0);
    auto format = layout->getGlobalParamsTypeLayout()->getBindingRangeImageFormat(0);
    SLANG_CHECK(format == SLANG_IMAGE_FORMAT_rgba32ui);
}
