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Rasterizer: Add Ceil and Floor to Fix12P4

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This commit is contained in:
Jannik Vogel 2016-04-17 23:34:55 +02:00
parent 537ba32167
commit 2d848836c1
1 changed files with 12 additions and 5 deletions
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17
src/video_core/rasterizer.cpp
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@ -290,6 +290,14 @@ struct Fix12P4 {
return static_cast<u16>(val & FracMask());
}
Fix12P4 Ceil() const {
return FromRaw(static_cast<s16>(val + FracMask())).Floor();
}
Fix12P4 Floor() const {
return FromRaw(static_cast<s16>(val & IntMask()));
}
operator s16() const {
return val;
}
@ -387,11 +395,10 @@ static void ProcessTriangleInternal(const Shader::OutputVertex& v0,
// TODO: Proper scissor rect test!
Fix12P4 frac = Fix12P4::FromInt(0, Fix12P4::FracMask());
min_x = Fix12P4::FromInt(min_x.Int(), 0);
min_y = Fix12P4::FromInt(min_y.Int(), 0);
max_x = Fix12P4::FromInt((max_x + frac).Int());
max_y = Fix12P4::FromInt((max_y + frac).Int());
min_x = min_x.Floor();
min_y = min_y.Floor();
max_x = max_x.Ceil();
max_y = max_y.Ceil();
// Keep pixels inside framebuffer
min_x = std::max(min_x, Fix12P4::Zero());