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 # are met:
 #  * Redistributions of source code must retain the above copyright
 #    notice, this list of conditions and the following disclaimer.
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 #    documentation and/or other materials provided with the distribution.
 #  * Neither the name of NVIDIA CORPORATION nor the names of its
 #    contributors may be used to endorse or promote products derived
 #    from this software without specific prior written permission.
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#include "Testing/UnitTest.h"

namespace Falcor
{
namespace
{
// Some test points. Use exactly representable fp32 values to not worry about numerical issues.
const float3 kTestData[] = {
    {1.00f, 2.50f, -0.50f},
    {-3.50f, -0.00f, -1.25f},
    {4.00f, 2.75f, -2.50f},
    {0.50f, 1.25f, 4.50f},
};
} // namespace

GPU_TEST(AABB)
{
    const uint32_t resultSize = 100;

    // Setup and run GPU test.
    ctx.createProgram("Tests/Utils/AABBTests.cs.slang", "testAABB");
    ctx.allocateStructuredBuffer("result", resultSize);
    ctx.allocateStructuredBuffer("testData", (uint32_t)std::size(kTestData), kTestData, sizeof(kTestData));
    ctx["CB"]["n"] = (uint32_t)std::size(kTestData);
    ctx.runProgram();

    // Verify results.
    std::vector<float3> result = ctx.readBuffer<float3>("result");
    size_t i = 0;

    // Test 0
    EXPECT_EQ(result[i], kTestData[0]) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i], kTestData[0]) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i], kTestData[1]) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i], kTestData[2]) << "i = " << i;
    ++i;

    // Test 1
    EXPECT_EQ(result[i], float3(1)) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i], float3(1)) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i], float3(0)) << "i = " << i;
    ++i;

    EXPECT_EQ(result[i], kTestData[0]) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i], kTestData[0] + float3(1.f, 1.f, -0.5f)) << "i = " << i;
    ++i;

    // Test 2
    EXPECT_EQ(result[i], float3(0)) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i], float3(FLT_MAX)) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i], float3(-FLT_MAX)) << "i = " << i;
    ++i;

    // Test 3
    EXPECT_EQ(result[i], float3(-3.50f, 0.00f, -1.25f)) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i], float3(1.00f, 2.50f, -0.50f)) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i], float3(0.50f, 1.25f, -2.50f)) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i], float3(4.00f, 2.75f, 4.50f)) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i], float3(-3.50f, 0.00f, -2.50f)) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i], float3(4.00f, 2.75f, 4.50f)) << "i = " << i;
    ++i;

    // Test 4
    EXPECT_EQ(result[i], float3(0)) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i], float3(0)) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i], float3(1)) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i], float3(0)) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i], float3(1)) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i], float3(1)) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i], float3(1)) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i], float3(0)) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i], float3(0)) << "i = " << i;
    ++i;

    // Test 5
    EXPECT_EQ(result[i], kTestData[0]) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i], float3(0)) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 0.f) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 0.f) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 0.f) << "i = " << i;
    ++i;

    EXPECT_EQ(result[i], kTestData[0] - float3(0.f, 0.5f, 0.f)) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i], float3(0.f, 1.f, 0.f)) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 0.f) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 0.f) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 0.5f) << "i = " << i;
    ++i;

    EXPECT_EQ(result[i], float3(0.25f, 1.375f, 1.00f)) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i], float3(7.50f, 2.75f, 7.00f)) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 184.75f) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 144.375f) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 0.5f * std::sqrt(7.50f * 7.50f + 2.75f * 2.75f + 7.00f * 7.00f)) << "i = " << i;
    ++i;

    // Test 6
    EXPECT_EQ(result[i].x, 1.0f) << "i = " << i;
    EXPECT_EQ(result[i].y, 1.0f) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 1.0f) << "i = " << i;
    EXPECT_EQ(result[i].y, 1.0f) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 1.0f) << "i = " << i;
    EXPECT_EQ(result[i].y, 1.0f) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 1.0f) << "i = " << i;
    EXPECT_EQ(result[i].y, 1.0f) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 0.0f) << "i = " << i;
    EXPECT_EQ(result[i].y, 0.0f) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 0.0f) << "i = " << i;
    EXPECT_EQ(result[i].y, 0.0f) << "i = " << i;
    ++i;

    // Test 7
    EXPECT_EQ(result[i].x, 0.0f) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 0.0f) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 0.0f) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 2.0f) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 2.5f) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 5.0f) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 5.0f) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 13.0f) << "i = " << i;
    ++i;

    // Test 8
    EXPECT_EQ(result[i].x, 0.0f) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 0.0f) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 0.0f) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 0.0f) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 1.0f) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 5.0f) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 5.0f) << "i = " << i;
    ++i;
    EXPECT_EQ(result[i].x, 13.0f) << "i = " << i;
    ++i;

    FALCOR_ASSERT(i <= resultSize);
}
} // namespace Falcor
