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Add clipping to other modes
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parent
229c3f465a
commit
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1 changed files with 27 additions and 14 deletions
41
s3l.h
41
s3l.h
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@ -1220,11 +1220,15 @@ void S3L_drawTriangle(S3L_Vec4 point0, S3L_Vec4 point1, S3L_Vec4 point2,
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lineLen = S3L_nonZero(line.steps);\
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do\
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{\
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p.x = line.x; p.y = line.y;\
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p.barycentric##p1 = S3L_interpolateFrom0(\
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S3L_FRACTIONS_PER_UNIT,line.steps,lineLen); \
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p.barycentric##p2 = S3L_FRACTIONS_PER_UNIT - p.barycentric##p1;\
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S3L_PIXEL_FUNCTION(&p);\
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if (line.x >= 0 && line.x < S3L_RESOLUTION_X &&\
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line.y >= 0 && line.y < S3L_RESOLUTION_Y)\
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{\
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p.x = line.x; p.y = line.y;\
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p.barycentric##p1 = S3L_interpolateFrom0(\
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S3L_FRACTIONS_PER_UNIT,line.steps,lineLen); \
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p.barycentric##p2 = S3L_FRACTIONS_PER_UNIT - p.barycentric##p1;\
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S3L_PIXEL_FUNCTION(&p);\
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}\
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} while (S3L_bresenhamStep(&line));
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drawLine(0,1)
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@ -1235,17 +1239,26 @@ void S3L_drawTriangle(S3L_Vec4 point0, S3L_Vec4 point1, S3L_Vec4 point2,
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}
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else // point mode
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{
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p.x = x0; p.y = y0; p.barycentric0 = S3L_FRACTIONS_PER_UNIT;
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p.barycentric1 = 0; p.barycentric2 = 0;
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S3L_PIXEL_FUNCTION(&p);
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if (x0 >= 0 && x0 < S3L_RESOLUTION_X && y0 >= 0 && y0 < S3L_RESOLUTION_Y)
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{
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p.x = x0; p.y = y0; p.barycentric0 = S3L_FRACTIONS_PER_UNIT;
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p.barycentric1 = 0; p.barycentric2 = 0;
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S3L_PIXEL_FUNCTION(&p);
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}
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p.x = x1; p.y = y1; p.barycentric0 = 0;
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p.barycentric1 = S3L_FRACTIONS_PER_UNIT; p.barycentric2 = 0;
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S3L_PIXEL_FUNCTION(&p);
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if (x1 >= 0 && x1 < S3L_RESOLUTION_X && y1 >= 0 && y1 < S3L_RESOLUTION_Y)
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{
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p.x = x1; p.y = y1; p.barycentric0 = 0;
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p.barycentric1 = S3L_FRACTIONS_PER_UNIT; p.barycentric2 = 0;
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S3L_PIXEL_FUNCTION(&p);
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}
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p.x = x2; p.y = y2; p.barycentric0 = 0;
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p.barycentric1 = 0; p.barycentric2 = S3L_FRACTIONS_PER_UNIT;
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S3L_PIXEL_FUNCTION(&p);
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if (x2 >= 0 && x2 < S3L_RESOLUTION_X && y2 >= 0 && y2 < S3L_RESOLUTION_Y)
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{
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p.x = x2; p.y = y2; p.barycentric0 = 0;
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p.barycentric1 = 0; p.barycentric2 = S3L_FRACTIONS_PER_UNIT;
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S3L_PIXEL_FUNCTION(&p);
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}
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}
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}
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