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author | Tony Wasserka <NeoBrainX@gmail.com> | 2014-07-27 20:08:42 +0200 |
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committer | Tony Wasserka <NeoBrainX@gmail.com> | 2014-08-12 13:46:24 +0200 |
commit | 98ad16a45b9441a54d80e67425ac3ddee24f08dc (patch) | |
tree | 2d70a631416a0163e46048297fe395457130d697 /src | |
parent | Video core: Add utility class for vector operations. (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | src/video_core/pica.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/src/video_core/pica.h b/src/video_core/pica.h index 858335d44..24b39a3ad 100644 --- a/src/video_core/pica.h +++ b/src/video_core/pica.h @@ -161,6 +161,81 @@ ASSERT_REG_POSITION(vertex_descriptor, 0x200); // The total number of registers is chosen arbitrarily, but let's make sure it's not some odd value anyway. static_assert(sizeof(Regs) == 0x300 * sizeof(u32), "Invalid total size of register set"); + +struct float24 { + static float24 FromFloat32(float val) { + float24 ret; + ret.value = val; + return ret; + } + + // 16 bit mantissa, 7 bit exponent, 1 bit sign + // TODO: No idea if this works as intended + static float24 FromRawFloat24(u32 hex) { + float24 ret; + if ((hex & 0xFFFFFF) == 0) { + ret.value = 0; + } else { + u32 mantissa = hex & 0xFFFF; + u32 exponent = (hex >> 16) & 0x7F; + u32 sign = hex >> 23; + ret.value = powf(2.0f, (float)exponent-63.0f) * (1.0f + mantissa * powf(2.0f, -16.f)); + if (sign) + ret.value = -ret.value; + } + return ret; + } + + // Not recommended for anything but logging + float ToFloat32() const { + return value; + } + + float24 operator * (const float24& flt) const { + return float24::FromFloat32(ToFloat32() * flt.ToFloat32()); + } + + float24 operator / (const float24& flt) const { + return float24::FromFloat32(ToFloat32() / flt.ToFloat32()); + } + + float24 operator + (const float24& flt) const { + return float24::FromFloat32(ToFloat32() + flt.ToFloat32()); + } + + float24 operator - (const float24& flt) const { + return float24::FromFloat32(ToFloat32() - flt.ToFloat32()); + } + + float24 operator - () const { + return float24::FromFloat32(-ToFloat32()); + } + + bool operator < (const float24& flt) const { + return ToFloat32() < flt.ToFloat32(); + } + + bool operator > (const float24& flt) const { + return ToFloat32() > flt.ToFloat32(); + } + + bool operator >= (const float24& flt) const { + return ToFloat32() >= flt.ToFloat32(); + } + + bool operator <= (const float24& flt) const { + return ToFloat32() <= flt.ToFloat32(); + } + +private: + float24() = default; + + // Stored as a regular float, merely for convenience + // TODO: Perform proper arithmetic on this! + float value; +}; + + union CommandHeader { CommandHeader(u32 h) : hex(h) {} |