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SoftGPU: Bias bottom right side of line drawing.

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Fixes lines in Persona 2.
This commit is contained in:
Unknown W. Brackets 2017-05-14 14:15:59 -07:00
parent a26aaec528
commit a95170d789
1 changed files with 7 additions and 6 deletions
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13
GPU/Software/Rasterizer.cpp
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@ -15,6 +15,9 @@
// Official git repository and contact information can be found at
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
#include <algorithm>
#include <cmath>
#include "base/basictypes.h"
#include "profiler/profiler.h"
@ -29,8 +32,6 @@
#include "GPU/Software/SoftGpu.h"
#include "GPU/Software/Rasterizer.h"
#include <algorithm>
#if defined(_M_SSE)
#include <emmintrin.h>
#endif
@ -1650,11 +1651,11 @@ void DrawLine(const VertexData &v0, const VertexData &v1)
}
}
float x = a.x;
float y = a.y;
float x = a.x > b.x ? a.x - 1 : a.x;
float y = a.y > b.y ? a.y - 1 : a.y;
float z = a.z;
const int steps1 = steps == 0 ? 1 : steps;
for (int i = 0; i <= steps; i++) {
for (int i = 0; i < steps; i++) {
if (x >= scissorTL.x && y >= scissorTL.y && x <= scissorBR.x && y <= scissorBR.y) {
// Interpolate between the two points.
Vec4<int> prim_color;
@ -1691,7 +1692,7 @@ void DrawLine(const VertexData &v0, const VertexData &v1)
if (!clearMode)
prim_color += Vec4<int>(sec_color, 0);
ScreenCoords pprime = ScreenCoords(x, y, z);
ScreenCoords pprime = ScreenCoords((int)x, (int)y, (int)z);
DrawingCoords p = TransformUnit::ScreenToDrawing(pprime);
if (clearMode) {