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VideoCommon: Fix scissorOffset, handle negative value correctly

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VideoCommon: Change the type of BPMemory.scissorOffset to 10bit signed: S32X10Y10
VideoBackends: Fix Software Clipper.PerspectiveDivide function, use BPMemory.scissorOffset instead of hard code 342
This commit is contained in:
ezio1900
2021-04-19 20:20:37 +08:00
parent 34348fad1d
commit 97ea3a603e
5 changed files with 51 additions and 33 deletions
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6
Source/Core/VideoBackends/Software/Clipper.cpp
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@ -513,8 +513,10 @@ void PerspectiveDivide(OutputVertexData* vertex)
Vec3& screen = vertex->screenPosition;
float wInverse = 1.0f / projected.w;
screen.x = projected.x * wInverse * xfmem.viewport.wd + xfmem.viewport.xOrig - 342;
screen.y = projected.y * wInverse * xfmem.viewport.ht + xfmem.viewport.yOrig - 342;
screen.x =
projected.x * wInverse * xfmem.viewport.wd + xfmem.viewport.xOrig - bpmem.scissorOffset.x * 2;
screen.y =
projected.y * wInverse * xfmem.viewport.ht + xfmem.viewport.yOrig - bpmem.scissorOffset.y * 2;
screen.z = projected.z * wInverse * xfmem.viewport.zRange + xfmem.viewport.farZ;
}
} // namespace Clipper