30 import jdk.internal.misc.Unsafe;
31
32 final class Renderer implements PathConsumer2D, MarlinRenderer {
33
34 static final boolean DISABLE_RENDER = false;
35
36 static final boolean ENABLE_BLOCK_FLAGS = MarlinProperties.isUseTileFlags();
37 static final boolean ENABLE_BLOCK_FLAGS_HEURISTICS = MarlinProperties.isUseTileFlagsWithHeuristics();
38
39 private static final int ALL_BUT_LSB = 0xFFFFFFFE;
40 private static final int ERR_STEP_MAX = 0x7FFFFFFF; // = 2^31 - 1
41
42 private static final double POWER_2_TO_32 = 0x1.0p32d;
43
44 // use float to make tosubpix methods faster (no int to float conversion)
45 static final float SUBPIXEL_SCALE_X = (float) SUBPIXEL_POSITIONS_X;
46 static final float SUBPIXEL_SCALE_Y = (float) SUBPIXEL_POSITIONS_Y;
47 static final int SUBPIXEL_MASK_X = SUBPIXEL_POSITIONS_X - 1;
48 static final int SUBPIXEL_MASK_Y = SUBPIXEL_POSITIONS_Y - 1;
49
50 // number of subpixels corresponding to a tile line
51 private static final int SUBPIXEL_TILE
52 = TILE_H << SUBPIXEL_LG_POSITIONS_Y;
53
54 // 2048 (pixelSize) pixels (height) x 8 subpixels = 64K
55 static final int INITIAL_BUCKET_ARRAY
56 = INITIAL_PIXEL_DIM * SUBPIXEL_POSITIONS_Y;
57
58 // crossing capacity = edges count / 4 ~ 1024
59 static final int INITIAL_CROSSING_COUNT = INITIAL_EDGES_COUNT >> 2;
60
61 public static final int WIND_EVEN_ODD = 0;
62 public static final int WIND_NON_ZERO = 1;
63
64 // common to all types of input path segments.
65 // OFFSET as bytes
66 // only integer values:
67 public static final long OFF_CURX_OR = 0;
68 public static final long OFF_ERROR = OFF_CURX_OR + SIZE_INT;
69 public static final long OFF_BUMP_X = OFF_ERROR + SIZE_INT;
70 public static final long OFF_BUMP_ERR = OFF_BUMP_X + SIZE_INT;
71 public static final long OFF_NEXT = OFF_BUMP_ERR + SIZE_INT;
72 public static final long OFF_YMAX = OFF_NEXT + SIZE_INT;
73
74 // size of one edge in bytes
75 public static final int SIZEOF_EDGE_BYTES = (int)(OFF_YMAX + SIZE_INT);
76
77 // curve break into lines
78 // cubic error in subpixels to decrement step
79 private static final float CUB_DEC_ERR_SUBPIX
80 = MarlinProperties.getCubicDecD2() * (NORM_SUBPIXELS / 8.0f); // 1 pixel
81 // cubic error in subpixels to increment step
82 private static final float CUB_INC_ERR_SUBPIX
83 = MarlinProperties.getCubicIncD1() * (NORM_SUBPIXELS / 8.0f); // 0.4 pixel
655 // Force zero-fill dirty arrays:
656 edges.fill(BYTE_0);
657 }
658 if (DO_MONITORS) {
659 rdrCtx.stats.mon_rdr_endRendering.stop();
660 }
661 // recycle the RendererContext instance
662 MarlinRenderingEngine.returnRendererContext(rdrCtx);
663 }
664
665 private static float tosubpixx(final float pix_x) {
666 return SUBPIXEL_SCALE_X * pix_x;
667 }
668
669 private static float tosubpixy(final float pix_y) {
670 // shift y by -0.5 for fast ceil(y - 0.5):
671 return SUBPIXEL_SCALE_Y * pix_y - 0.5f;
672 }
673
674 @Override
675 public void moveTo(float pix_x0, float pix_y0) {
676 closePath();
677 final float sx = tosubpixx(pix_x0);
678 final float sy = tosubpixy(pix_y0);
679 this.sx0 = sx;
680 this.sy0 = sy;
681 this.x0 = sx;
682 this.y0 = sy;
683 }
684
685 @Override
686 public void lineTo(float pix_x1, float pix_y1) {
687 final float x1 = tosubpixx(pix_x1);
688 final float y1 = tosubpixy(pix_y1);
689 addLine(x0, y0, x1, y1);
690 x0 = x1;
691 y0 = y1;
692 }
693
694 @Override
695 public void curveTo(float x1, float y1,
696 float x2, float y2,
697 float x3, float y3)
698 {
699 final float xe = tosubpixx(x3);
700 final float ye = tosubpixy(y3);
701 curve.set(x0, y0, tosubpixx(x1), tosubpixy(y1),
702 tosubpixx(x2), tosubpixy(y2), xe, ye);
703 curveBreakIntoLinesAndAdd(x0, y0, curve, xe, ye);
704 x0 = xe;
705 y0 = ye;
706 }
707
708 @Override
709 public void quadTo(float x1, float y1, float x2, float y2) {
710 final float xe = tosubpixx(x2);
711 final float ye = tosubpixy(y2);
712 curve.set(x0, y0, tosubpixx(x1), tosubpixy(y1), xe, ye);
713 quadBreakIntoLinesAndAdd(x0, y0, curve, xe, ye);
714 x0 = xe;
715 y0 = ye;
716 }
717
718 @Override
719 public void closePath() {
720 addLine(x0, y0, sx0, sy0);
721 x0 = sx0;
722 y0 = sy0;
723 }
724
725 @Override
726 public void pathDone() {
727 closePath();
728 }
729
730 @Override
731 public long getNativeConsumer() {
732 throw new InternalError("Renderer does not use a native consumer.");
733 }
734
735 private void _endRendering(final int ymin, final int ymax) {
736 if (DISABLE_RENDER) {
737 return;
738 }
739
740 // Get X bounds as true pixel boundaries to compute correct pixel coverage:
741 final int bboxx0 = bbox_spminX;
742 final int bboxx1 = bbox_spmaxX;
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30 import jdk.internal.misc.Unsafe;
31
32 final class Renderer implements PathConsumer2D, MarlinRenderer {
33
34 static final boolean DISABLE_RENDER = false;
35
36 static final boolean ENABLE_BLOCK_FLAGS = MarlinProperties.isUseTileFlags();
37 static final boolean ENABLE_BLOCK_FLAGS_HEURISTICS = MarlinProperties.isUseTileFlagsWithHeuristics();
38
39 private static final int ALL_BUT_LSB = 0xFFFFFFFE;
40 private static final int ERR_STEP_MAX = 0x7FFFFFFF; // = 2^31 - 1
41
42 private static final double POWER_2_TO_32 = 0x1.0p32d;
43
44 // use float to make tosubpix methods faster (no int to float conversion)
45 static final float SUBPIXEL_SCALE_X = (float) SUBPIXEL_POSITIONS_X;
46 static final float SUBPIXEL_SCALE_Y = (float) SUBPIXEL_POSITIONS_Y;
47 static final int SUBPIXEL_MASK_X = SUBPIXEL_POSITIONS_X - 1;
48 static final int SUBPIXEL_MASK_Y = SUBPIXEL_POSITIONS_Y - 1;
49
50 static final float RDR_OFFSET_X = 0.5f / SUBPIXEL_SCALE_X;
51 static final float RDR_OFFSET_Y = 0.5f / SUBPIXEL_SCALE_Y;
52
53 // number of subpixels corresponding to a tile line
54 private static final int SUBPIXEL_TILE
55 = TILE_H << SUBPIXEL_LG_POSITIONS_Y;
56
57 // 2048 (pixelSize) pixels (height) x 8 subpixels = 64K
58 static final int INITIAL_BUCKET_ARRAY
59 = INITIAL_PIXEL_DIM * SUBPIXEL_POSITIONS_Y;
60
61 // crossing capacity = edges count / 4 ~ 1024
62 static final int INITIAL_CROSSING_COUNT = INITIAL_EDGES_COUNT >> 2;
63
64 // common to all types of input path segments.
65 // OFFSET as bytes
66 // only integer values:
67 public static final long OFF_CURX_OR = 0;
68 public static final long OFF_ERROR = OFF_CURX_OR + SIZE_INT;
69 public static final long OFF_BUMP_X = OFF_ERROR + SIZE_INT;
70 public static final long OFF_BUMP_ERR = OFF_BUMP_X + SIZE_INT;
71 public static final long OFF_NEXT = OFF_BUMP_ERR + SIZE_INT;
72 public static final long OFF_YMAX = OFF_NEXT + SIZE_INT;
73
74 // size of one edge in bytes
75 public static final int SIZEOF_EDGE_BYTES = (int)(OFF_YMAX + SIZE_INT);
76
77 // curve break into lines
78 // cubic error in subpixels to decrement step
79 private static final float CUB_DEC_ERR_SUBPIX
80 = MarlinProperties.getCubicDecD2() * (NORM_SUBPIXELS / 8.0f); // 1 pixel
81 // cubic error in subpixels to increment step
82 private static final float CUB_INC_ERR_SUBPIX
83 = MarlinProperties.getCubicIncD1() * (NORM_SUBPIXELS / 8.0f); // 0.4 pixel
655 // Force zero-fill dirty arrays:
656 edges.fill(BYTE_0);
657 }
658 if (DO_MONITORS) {
659 rdrCtx.stats.mon_rdr_endRendering.stop();
660 }
661 // recycle the RendererContext instance
662 MarlinRenderingEngine.returnRendererContext(rdrCtx);
663 }
664
665 private static float tosubpixx(final float pix_x) {
666 return SUBPIXEL_SCALE_X * pix_x;
667 }
668
669 private static float tosubpixy(final float pix_y) {
670 // shift y by -0.5 for fast ceil(y - 0.5):
671 return SUBPIXEL_SCALE_Y * pix_y - 0.5f;
672 }
673
674 @Override
675 public void moveTo(final float pix_x0, final float pix_y0) {
676 closePath();
677 final float sx = tosubpixx(pix_x0);
678 final float sy = tosubpixy(pix_y0);
679 this.sx0 = sx;
680 this.sy0 = sy;
681 this.x0 = sx;
682 this.y0 = sy;
683 }
684
685 @Override
686 public void lineTo(final float pix_x1, final float pix_y1) {
687 final float x1 = tosubpixx(pix_x1);
688 final float y1 = tosubpixy(pix_y1);
689 addLine(x0, y0, x1, y1);
690 x0 = x1;
691 y0 = y1;
692 }
693
694 @Override
695 public void curveTo(final float pix_x1, final float pix_y1,
696 final float pix_x2, final float pix_y2,
697 final float pix_x3, final float pix_y3)
698 {
699 final float xe = tosubpixx(pix_x3);
700 final float ye = tosubpixy(pix_y3);
701 curve.set(x0, y0, tosubpixx(pix_x1), tosubpixy(pix_y1),
702 tosubpixx(pix_x2), tosubpixy(pix_y2), xe, ye);
703 curveBreakIntoLinesAndAdd(x0, y0, curve, xe, ye);
704 x0 = xe;
705 y0 = ye;
706 }
707
708 @Override
709 public void quadTo(final float pix_x1, final float pix_y1,
710 final float pix_x2, final float pix_y2)
711 {
712 final float xe = tosubpixx(pix_x2);
713 final float ye = tosubpixy(pix_y2);
714 curve.set(x0, y0, tosubpixx(pix_x1), tosubpixy(pix_y1), xe, ye);
715 quadBreakIntoLinesAndAdd(x0, y0, curve, xe, ye);
716 x0 = xe;
717 y0 = ye;
718 }
719
720 @Override
721 public void closePath() {
722 if (x0 != sx0 || y0 != sy0) {
723 addLine(x0, y0, sx0, sy0);
724 x0 = sx0;
725 y0 = sy0;
726 }
727 }
728
729 @Override
730 public void pathDone() {
731 closePath();
732 }
733
734 @Override
735 public long getNativeConsumer() {
736 throw new InternalError("Renderer does not use a native consumer.");
737 }
738
739 private void _endRendering(final int ymin, final int ymax) {
740 if (DISABLE_RENDER) {
741 return;
742 }
743
744 // Get X bounds as true pixel boundaries to compute correct pixel coverage:
745 final int bboxx0 = bbox_spminX;
746 final int bboxx1 = bbox_spmaxX;
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