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emu/rendlay.cpp: Work around error accumulation issue that could cause hang with x87 floating-point.

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This commit is contained in:
Vas Crabb 2020-10-14 23:34:00 +11:00
parent cb4a840d0e
commit 621341c33c
1 changed files with 5 additions and 5 deletions
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10
src/emu/rendlay.cpp
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@ -2065,7 +2065,7 @@ public:
auto const draw_edge_row =
[this, &dest, &c, &curbounds, xcenter, xradius, scale, ooyradius2] (s32 row, float ycoord, bool cross_axis)
{
float const xval = xradius * std::sqrt(1.0F - (ycoord * ycoord) * ooyradius2);
float const xval = xradius * std::sqrt((std::max)(1.0F - (ycoord * ycoord) * ooyradius2, 0.0F));
float const l = xcenter - xval;
float const r = xcenter + xval;
if (!cross_axis)
@ -2115,7 +2115,7 @@ public:
// draw rows above the axis
s32 y = miny + 1;
float ycoord1 = ycenter - float(y);
float xval1 = xradius * std::sqrt(1.0F - (ycoord1 * ycoord1) * ooyradius2);
float xval1 = xradius * std::sqrt((std::max)(1.0F - (ycoord1 * ycoord1) * ooyradius2, 0.0F));
float l1 = xcenter - xval1;
float r1 = xcenter + xval1;
for ( ; (maxy > y) && (float(y + 1) <= ycenter); ++y)
@ -2123,7 +2123,7 @@ public:
float const l0 = l1;
float const r0 = r1;
ycoord1 = ycenter - float(y + 1);
xval1 = xradius * std::sqrt(1.0F - (ycoord1 * ycoord1) * ooyradius2);
xval1 = xradius * std::sqrt((std::max)(1.0F - (ycoord1 * ycoord1) * ooyradius2, 0.0F));
l1 = xcenter - xval1;
r1 = xcenter + xval1;
s32 minx = int(l1);
@ -2166,7 +2166,7 @@ public:
float const l0 = l1;
float const r0 = r1;
ycoord1 = float(y + 1) - ycenter;
xval1 = xradius * std::sqrt(1.0F - (ycoord1 * ycoord1) * ooyradius2);
xval1 = xradius * std::sqrt((std::max)(1.0F - (ycoord1 * ycoord1) * ooyradius2, 0.0F));
l1 = xcenter - xval1;
r1 = xcenter + xval1;
s32 const minx = int(curbounds.x0 * float(dest.width()));
@ -2216,7 +2216,7 @@ public:
float const l0 = l1;
float const r0 = r1;
ycoord1 = float(y + 1) - ycenter;
xval1 = xradius * std::sqrt(1.0F - (ycoord1 * ycoord1) * ooyradius2);
xval1 = xradius * std::sqrt((std::max)(1.0F - (ycoord1 * ycoord1) * ooyradius2, 0.0F));
l1 = xcenter - xval1;
r1 = xcenter + xval1;
s32 minx = int(l0);