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softgpu: Fix triangle borders not fitting together properly.

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Tony Wasserka 2013-07-23 11:09:03 +02:00 • committed by neobrain
parent d91d5c087b
commit c8f1819179
1 changed files with 6 additions and 5 deletions
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11
GPU/Software/Rasterizer.cpp
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@ -364,13 +364,14 @@ void DrawTriangle(const VertexData& v0, const VertexData& v1, const VertexData&
DrawingCoords p(minX, minY, 0);
for (p.y = minY; p.y <= maxY; ++p.y) {
for (p.x = minX; p.x <= maxX; ++p.x) {
int w0 = orient2d(v1.drawpos, v2.drawpos, p) + bias0;
int w1 = orient2d(v2.drawpos, v0.drawpos, p) + bias1;
int w2 = orient2d(v0.drawpos, v1.drawpos, p) + bias2;
int w0 = orient2d(v1.drawpos, v2.drawpos, p);
int w1 = orient2d(v2.drawpos, v0.drawpos, p);
int w2 = orient2d(v0.drawpos, v1.drawpos, p);
// If p is on or inside all edges, render pixel
// TODO: Should only render when it's on the left of the right edge
if (w0 >=0 && w1 >= 0 && w2 >= 0) {
// TODO: Should we render if the pixel is both on the left and the right side? (i.e. degenerated triangle)
if (w0 + bias0 >=0 && w1 + bias1 >= 0 && w2 + bias2 >= 0) {
// TODO: Check if this check is still necessary
if (w0 == w1 && w1 == w2 && w2 == 0)
continue;