46 lines
1.0 KiB
C++
46 lines
1.0 KiB
C++
// Copyright 2009 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include "VideoCommon/BPMemory.h"
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#include <cstring>
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// BP state
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// STATE_TO_SAVE
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BPMemory bpmem;
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bool BlendMode::UseLogicOp() const
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{
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// Logicop bit has lowest priority.
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if (subtract || blendenable || !logicopenable)
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return false;
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// Fast path for Kirby's Return to Dreamland, they use it with dstAlpha.
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if (logicmode == BlendMode::NOOP)
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return false;
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return true;
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}
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float FogParam0::GetA() const
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{
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// scale mantissa from 11 to 23 bits
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const u32 integral = (static_cast<u32>(sign) << 31) | (static_cast<u32>(exponent) << 23) |
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(static_cast<u32>(mantissa) << 12);
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float real;
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std::memcpy(&real, &integral, sizeof(u32));
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return real;
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}
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float FogParam3::GetC() const
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{
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// scale mantissa from 11 to 23 bits
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const u32 integral = (c_sign.Value() << 31) | (c_exp.Value() << 23) | (c_mant.Value() << 12);
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float real;
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std::memcpy(&real, &integral, sizeof(u32));
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return real;
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}
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