54 lines
2.1 KiB
C++
54 lines
2.1 KiB
C++
#include <gtest/gtest.h>
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#include <XCEngine/Rendering/Picking/ObjectIdCodec.h>
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#include <limits>
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using namespace XCEngine::Rendering;
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TEST(ObjectIdEncoding_Test, ConvertsValidRuntimeObjectIdLosslessly) {
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constexpr uint64_t objectId = 0x00ABCDEFu;
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RenderObjectId renderObjectId = kInvalidRenderObjectId;
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EXPECT_TRUE(CanConvertRuntimeObjectIdToRenderObjectId(objectId));
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EXPECT_TRUE(TryConvertRuntimeObjectIdToRenderObjectId(objectId, renderObjectId));
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EXPECT_EQ(renderObjectId, 0x00ABCDEFu);
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EXPECT_EQ(ConvertRenderObjectIdToRuntimeObjectId(renderObjectId), objectId);
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}
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TEST(ObjectIdEncoding_Test, RejectsInvalidAndOverflowRuntimeObjectIds) {
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RenderObjectId renderObjectId = 123u;
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EXPECT_FALSE(CanConvertRuntimeObjectIdToRenderObjectId(0u));
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EXPECT_FALSE(TryConvertRuntimeObjectIdToRenderObjectId(0u, renderObjectId));
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EXPECT_EQ(renderObjectId, kInvalidRenderObjectId);
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const uint64_t overflowObjectId =
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static_cast<uint64_t>(std::numeric_limits<RenderObjectId>::max()) + 1ull;
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renderObjectId = 456u;
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EXPECT_FALSE(CanConvertRuntimeObjectIdToRenderObjectId(overflowObjectId));
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EXPECT_FALSE(TryConvertRuntimeObjectIdToRenderObjectId(overflowObjectId, renderObjectId));
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EXPECT_EQ(renderObjectId, kInvalidRenderObjectId);
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}
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TEST(ObjectIdEncoding_Test, DecodesColorBackToRenderObjectId) {
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constexpr uint8_t r = 0x12u;
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constexpr uint8_t g = 0x34u;
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constexpr uint8_t b = 0x56u;
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constexpr uint8_t a = 0x78u;
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EXPECT_EQ(DecodeEncodedObjectIdFromColor(r, g, b, a), 0x78563412u);
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EXPECT_EQ(DecodeRenderObjectIdFromColor(r, g, b, a), 0x78563412u);
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EXPECT_EQ(ConvertRenderObjectIdToRuntimeObjectId(DecodeRenderObjectIdFromColor(r, g, b, a)), 0x78563412ull);
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}
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TEST(ObjectIdEncoding_Test, EncodesColorChannelsFromRenderObjectId) {
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const auto encodedColor = EncodeRenderObjectIdToColor(0x78563412u);
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constexpr float kInv255 = 1.0f / 255.0f;
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EXPECT_FLOAT_EQ(encodedColor.x, 0x12u * kInv255);
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EXPECT_FLOAT_EQ(encodedColor.y, 0x34u * kInv255);
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EXPECT_FLOAT_EQ(encodedColor.z, 0x56u * kInv255);
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EXPECT_FLOAT_EQ(encodedColor.w, 0x78u * kInv255);
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}
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