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llvmpipe: fix rasterization of vertical lines on pixel boundaries

This commit is contained in:
Zack Rusin 2010-10-07 16:26:17 -04:00 committed by José Fonseca
parent e7843363a5
commit 6316d54056
1 changed files with 2 additions and 2 deletions
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4
src/gallium/drivers/llvmpipe/lp_setup_line.c
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@ -475,7 +475,7 @@ try_setup_line( struct lp_setup_context *setup,
else {
/* do intersection test */
float xintersect = fracf(v2[0][0]) + y2diff * dxdy;
draw_end = (xintersect < 1.0 && xintersect > 0.0);
draw_end = (xintersect < 1.0 && xintersect >= 0.0);
}
/* Are we already drawing start/end?
@ -513,7 +513,7 @@ try_setup_line( struct lp_setup_context *setup,
x_offset_end = y_offset_end * dxdy;
}
}
/* x/y positions in fixed point */
x[0] = subpixel_snap(v1[0][0] + x_offset - setup->pixel_offset) - fixed_width/2;
x[1] = subpixel_snap(v2[0][0] + x_offset_end - setup->pixel_offset) - fixed_width/2;