mirror of
https://github.com/reactos/reactos.git
synced 2024-06-30 01:42:30 +00:00
601 lines
18 KiB
C
601 lines
18 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* PURPOSE: GDI Driver Gradient Functions
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* FILE: win32ss/gdi/eng/gradient.c
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* PROGRAMER: Thomas Weidenmueller
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*/
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#include <win32k.h>
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#define NDEBUG
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#include <debug.h>
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/* MACROS *********************************************************************/
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const LONG LINC[2] = {-1, 1};
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#define VERTEX(n) (pVertex + gt->n)
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#define COMPAREVERTEX(a, b) ((a)->x == (b)->x && (a)->y == (b)->y)
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#define VCMPCLR(a,b,c,color) (a->color != b->color || a->color != c->color)
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#define VCMPCLRS(a,b,c) \
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!(!VCMPCLR(a,b,c,Red) || !VCMPCLR(a,b,c,Green) || !VCMPCLR(a,b,c,Blue))
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/* Horizontal/Vertical gradients */
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#define HVINITCOL(Col, id) \
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c[id] = v1->Col >> 8; \
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dc[id] = abs((v2->Col >> 8) - c[id]); \
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ec[id] = -(dy >> 1); \
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ic[id] = LINC[(v2->Col >> 8) > c[id]]
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#define HVSTEPCOL(id) \
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ec[id] += dc[id]; \
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while(ec[id] > 0) \
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{ \
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c[id] += ic[id]; \
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ec[id] -= dy; \
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}
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/* FUNCTIONS ******************************************************************/
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BOOL
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FASTCALL
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IntEngGradientFillRect(
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IN SURFOBJ *psoDest,
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IN CLIPOBJ *pco,
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IN XLATEOBJ *pxlo,
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IN TRIVERTEX *pVertex,
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IN ULONG nVertex,
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IN PGRADIENT_RECT gRect,
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IN RECTL *prclExtents,
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IN POINTL *pptlDitherOrg,
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IN BOOL Horizontal)
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{
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SURFOBJ *psoOutput;
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TRIVERTEX *v1, *v2;
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RECTL rcGradient, rcSG;
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RECT_ENUM RectEnum;
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BOOL EnumMore;
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ULONG i;
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POINTL Translate;
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INTENG_ENTER_LEAVE EnterLeave;
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LONG y, dy, c[3], dc[3], ec[3], ic[3];
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v1 = (pVertex + gRect->UpperLeft);
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v2 = (pVertex + gRect->LowerRight);
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rcGradient.left = min(v1->x, v2->x);
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rcGradient.right = max(v1->x, v2->x);
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rcGradient.top = min(v1->y, v2->y);
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rcGradient.bottom = max(v1->y, v2->y);
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rcSG = rcGradient;
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RECTL_vOffsetRect(&rcSG, pptlDitherOrg->x, pptlDitherOrg->y);
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if(Horizontal)
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{
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dy = abs(rcGradient.right - rcGradient.left);
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}
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else
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{
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dy = abs(rcGradient.bottom - rcGradient.top);
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}
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if(!IntEngEnter(&EnterLeave, psoDest, &rcSG, FALSE, &Translate, &psoOutput))
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{
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return FALSE;
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}
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if((v1->Red != v2->Red || v1->Green != v2->Green || v1->Blue != v2->Blue) && dy > 1)
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{
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CLIPOBJ_cEnumStart(pco, FALSE, CT_RECTANGLES, CD_RIGHTDOWN, 0);
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do
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{
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RECTL FillRect;
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ULONG Color;
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if (Horizontal)
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{
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EnumMore = CLIPOBJ_bEnum(pco, (ULONG) sizeof(RectEnum), (PVOID) &RectEnum);
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for (i = 0; i < RectEnum.c && RectEnum.arcl[i].top <= rcSG.bottom; i++)
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{
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if (RECTL_bIntersectRect(&FillRect, &RectEnum.arcl[i], &rcSG))
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{
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HVINITCOL(Red, 0);
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HVINITCOL(Green, 1);
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HVINITCOL(Blue, 2);
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for (y = rcSG.left; y < FillRect.right; y++)
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{
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if (y >= FillRect.left)
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{
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Color = XLATEOBJ_iXlate(pxlo, RGB(c[0], c[1], c[2]));
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DibFunctionsForBitmapFormat[psoOutput->iBitmapFormat].DIB_VLine(
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psoOutput, y + Translate.x, FillRect.top + Translate.y, FillRect.bottom + Translate.y, Color);
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}
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HVSTEPCOL(0);
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HVSTEPCOL(1);
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HVSTEPCOL(2);
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}
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}
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}
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continue;
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}
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/* vertical */
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EnumMore = CLIPOBJ_bEnum(pco, (ULONG) sizeof(RectEnum), (PVOID) &RectEnum);
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for (i = 0; i < RectEnum.c && RectEnum.arcl[i].top <= rcSG.bottom; i++)
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{
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if (RECTL_bIntersectRect(&FillRect, &RectEnum.arcl[i], &rcSG))
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{
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HVINITCOL(Red, 0);
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HVINITCOL(Green, 1);
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HVINITCOL(Blue, 2);
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for (y = rcSG.top; y < FillRect.bottom; y++)
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{
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if (y >= FillRect.top)
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{
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Color = XLATEOBJ_iXlate(pxlo, RGB(c[0], c[1], c[2]));
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DibFunctionsForBitmapFormat[psoOutput->iBitmapFormat].DIB_HLine(psoOutput,
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FillRect.left + Translate.x,
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FillRect.right + Translate.x,
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y + Translate.y,
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Color);
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}
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HVSTEPCOL(0);
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HVSTEPCOL(1);
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HVSTEPCOL(2);
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}
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}
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}
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}
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while (EnumMore);
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return IntEngLeave(&EnterLeave);
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}
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/* rectangle has only one color, no calculation required */
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CLIPOBJ_cEnumStart(pco, FALSE, CT_RECTANGLES, CD_RIGHTDOWN, 0);
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do
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{
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RECTL FillRect;
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ULONG Color = XLATEOBJ_iXlate(pxlo, RGB(v1->Red >> 8, v1->Green >> 8, v1->Blue >> 8));
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EnumMore = CLIPOBJ_bEnum(pco, (ULONG) sizeof(RectEnum), (PVOID) &RectEnum);
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for (i = 0; i < RectEnum.c && RectEnum.arcl[i].top <= rcSG.bottom; i++)
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{
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if (RECTL_bIntersectRect(&FillRect, &RectEnum.arcl[i], &rcSG))
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{
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for (; FillRect.top < FillRect.bottom; FillRect.top++)
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{
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DibFunctionsForBitmapFormat[psoOutput->iBitmapFormat].DIB_HLine(psoOutput,
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FillRect.left + Translate.x,
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FillRect.right + Translate.x,
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FillRect.top + Translate.y,
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Color);
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}
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}
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}
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}
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while (EnumMore);
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return IntEngLeave(&EnterLeave);
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}
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/* Fill triangle with solid color */
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#define S_FILLLINE(linefrom,lineto) \
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if(sx[lineto] < sx[linefrom]) \
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DibFunctionsForBitmapFormat[psoOutput->iBitmapFormat].DIB_HLine(psoOutput, max(sx[lineto], FillRect.left), min(sx[linefrom], FillRect.right), sy, Color); \
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else \
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DibFunctionsForBitmapFormat[psoOutput->iBitmapFormat].DIB_HLine(psoOutput, max(sx[linefrom], FillRect.left), min(sx[lineto], FillRect.right), sy, Color);
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#define S_DOLINE(a,b,line) \
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ex[line] += dx[line]; \
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while(ex[line] > 0 && x[line] != destx[line]) \
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{ \
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x[line] += incx[line]; \
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sx[line] += incx[line]; \
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ex[line] -= dy[line]; \
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}
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#define S_GOLINE(a,b,line) \
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if(y >= a->y && y <= b->y) \
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{
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#define S_ENDLINE(a,b,line) \
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}
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#define S_INITLINE(a,b,line) \
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x[line] = a->x; \
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sx[line] = a->x + pptlDitherOrg->x; \
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dx[line] = abs(b->x - a->x); \
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dy[line] = abs(b->y - a->y); \
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incx[line] = LINC[b->x > a->x]; \
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ex[line] = -(dy[line]>>1); \
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destx[line] = b->x
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/* Fill triangle with gradient */
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#define INITCOL(a,b,line,col,id) \
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c[line][id] = a->col >> 8; \
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dc[line][id] = abs((b->col >> 8) - c[line][id]); \
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ec[line][id] = -(dy[line]>>1); \
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ic[line][id] = LINC[(b->col >> 8) > c[line][id]]
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#define STEPCOL(a,b,line,col,id) \
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ec[line][id] += dc[line][id]; \
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while(ec[line][id] > 0) \
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{ \
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c[line][id] += ic[line][id]; \
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ec[line][id] -= dy[line]; \
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}
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#define FINITCOL(linefrom,lineto,colid) \
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gc[colid] = c[linefrom][colid]; \
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gd[colid] = abs(c[lineto][colid] - gc[colid]); \
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ge[colid] = -(gx >> 1); \
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gi[colid] = LINC[c[lineto][colid] > gc[colid]]
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#define FDOCOL(linefrom,lineto,colid) \
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ge[colid] += gd[colid]; \
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while(ge[colid] > 0) \
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{ \
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gc[colid] += gi[colid]; \
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ge[colid] -= gx; \
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}
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#define FILLLINE(linefrom,lineto) \
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gx = abs(sx[lineto] - sx[linefrom]); \
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gxi = LINC[sx[linefrom] < sx[lineto]]; \
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FINITCOL(linefrom, lineto, 0); \
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FINITCOL(linefrom, lineto, 1); \
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FINITCOL(linefrom, lineto, 2); \
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for(g = sx[linefrom]; g != sx[lineto]; g += gxi) \
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{ \
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if(InY && g >= FillRect.left && g < FillRect.right) \
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{ \
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Color = XLATEOBJ_iXlate(pxlo, RGB(gc[0], gc[1], gc[2])); \
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DibFunctionsForBitmapFormat[psoOutput->iBitmapFormat].DIB_PutPixel(psoOutput, g, sy, Color); \
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} \
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FDOCOL(linefrom, lineto, 0); \
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FDOCOL(linefrom, lineto, 1); \
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FDOCOL(linefrom, lineto, 2); \
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}
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#define DOLINE(a,b,line) \
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STEPCOL(a, b, line, Red, 0); \
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STEPCOL(a, b, line, Green, 1); \
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STEPCOL(a, b, line, Blue, 2); \
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ex[line] += dx[line]; \
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while(ex[line] > 0 && x[line] != destx[line]) \
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{ \
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x[line] += incx[line]; \
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sx[line] += incx[line]; \
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ex[line] -= dy[line]; \
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}
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#define GOLINE(a,b,line) \
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if(y >= a->y && y <= b->y) \
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{
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#define ENDLINE(a,b,line) \
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}
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#define INITLINE(a,b,line) \
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x[line] = a->x; \
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sx[line] = a->x + pptlDitherOrg->x; \
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dx[line] = abs(b->x - a->x); \
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dy[line] = max(abs(b->y - a->y),1); \
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incx[line] = LINC[b->x > a->x]; \
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ex[line] = -(dy[line]>>1); \
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destx[line] = b->x
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#define DOINIT(a, b, line) \
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INITLINE(a, b, line); \
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INITCOL(a, b, line, Red, 0); \
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INITCOL(a, b, line, Green, 1); \
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INITCOL(a, b, line, Blue, 2);
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#define SMALLER(a,b) (a->y < b->y) || (a->y == b->y && a->x < b->x)
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#define SWAP(a,b,c) c = a;\
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a = b;\
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b = c
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#define NLINES 3
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BOOL
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FASTCALL
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IntEngGradientFillTriangle(
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IN SURFOBJ *psoDest,
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IN CLIPOBJ *pco,
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IN XLATEOBJ *pxlo,
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IN TRIVERTEX *pVertex,
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IN ULONG nVertex,
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IN PGRADIENT_TRIANGLE gTriangle,
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IN RECTL *prclExtents,
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IN POINTL *pptlDitherOrg)
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{
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SURFOBJ *psoOutput;
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PTRIVERTEX v1, v2, v3;
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RECT_ENUM RectEnum;
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BOOL EnumMore;
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ULONG i;
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POINTL Translate;
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INTENG_ENTER_LEAVE EnterLeave;
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RECTL FillRect = { 0, 0, 0, 0 };
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ULONG Color;
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BOOL sx[NLINES];
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LONG x[NLINES], dx[NLINES], dy[NLINES], incx[NLINES], ex[NLINES], destx[NLINES];
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LONG c[NLINES][3], dc[NLINES][3], ec[NLINES][3], ic[NLINES][3]; /* colors on lines */
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LONG g, gx, gxi, gc[3], gd[3], ge[3], gi[3]; /* colors in triangle */
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LONG sy, y, bt;
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v1 = (pVertex + gTriangle->Vertex1);
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v2 = (pVertex + gTriangle->Vertex2);
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v3 = (pVertex + gTriangle->Vertex3);
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/* bubble sort */
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if (SMALLER(v2, v1))
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{
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TRIVERTEX *t;
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SWAP(v1, v2, t);
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}
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if (SMALLER(v3, v2))
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{
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TRIVERTEX *t;
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SWAP(v2, v3, t);
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if (SMALLER(v2, v1))
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{
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SWAP(v1, v2, t);
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}
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}
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DPRINT("Triangle: (%i,%i) (%i,%i) (%i,%i)\n", v1->x, v1->y, v2->x, v2->y, v3->x, v3->y);
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/* FIXME: commented out because of an endless loop - fix triangles first */
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DPRINT("FIXME: IntEngGradientFillTriangle is broken\n");
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if (!IntEngEnter(&EnterLeave, psoDest, &FillRect, FALSE, &Translate, &psoOutput))
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{
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return FALSE;
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}
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if (VCMPCLRS(v1, v2, v3))
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{
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CLIPOBJ_cEnumStart(pco, FALSE, CT_RECTANGLES, CD_RIGHTDOWN, 0);
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do
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{
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EnumMore = CLIPOBJ_bEnum(pco, (ULONG) sizeof(RectEnum), (PVOID) &RectEnum);
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for (i = 0; i < RectEnum.c && RectEnum.arcl[i].top <= prclExtents->bottom; i++)
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{
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if (RECTL_bIntersectRect(&FillRect, &RectEnum.arcl[i], prclExtents))
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{
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BOOL InY;
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DOINIT(v1, v3, 0);
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DOINIT(v1, v2, 1);
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DOINIT(v2, v3, 2);
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y = v1->y;
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sy = v1->y + pptlDitherOrg->y;
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bt = min(v3->y + pptlDitherOrg->y, FillRect.bottom);
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while (sy < bt)
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{
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InY = !(sy < FillRect.top || sy >= FillRect.bottom);
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GOLINE(v1, v3, 0);
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DOLINE(v1, v3, 0);
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ENDLINE(v1, v3, 0);
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GOLINE(v1, v2, 1);
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DOLINE(v1, v2, 1);
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FILLLINE(0, 1);
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ENDLINE(v1, v2, 1);
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GOLINE(v2, v3, 2);
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DOLINE(v2, v3, 2);
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FILLLINE(0, 2);
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ENDLINE(23, v3, 2);
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y++;
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sy++;
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}
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}
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}
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} while (EnumMore);
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return IntEngLeave(&EnterLeave);
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}
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/* fill triangle with one solid color */
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Color = XLATEOBJ_iXlate(pxlo, RGB(v1->Red >> 8, v1->Green >> 8, v1->Blue >> 8));
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CLIPOBJ_cEnumStart(pco, FALSE, CT_RECTANGLES, CD_RIGHTDOWN, 0);
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do
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{
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EnumMore = CLIPOBJ_bEnum(pco, (ULONG) sizeof(RectEnum), (PVOID) &RectEnum);
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for (i = 0; i < RectEnum.c && RectEnum.arcl[i].top <= prclExtents->bottom; i++)
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{
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if (RECTL_bIntersectRect(&FillRect, &RectEnum.arcl[i], prclExtents))
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{
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S_INITLINE(v1, v3, 0);
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S_INITLINE(v1, v2, 1);
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S_INITLINE(v2, v3, 2);
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y = v1->y;
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sy = v1->y + pptlDitherOrg->y;
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bt = min(v3->y + pptlDitherOrg->y, FillRect.bottom);
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while (sy < bt)
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{
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S_GOLINE(v1, v3, 0);
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S_DOLINE(v1, v3, 0);
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S_ENDLINE(v1, v3, 0);
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S_GOLINE(v1, v2, 1);
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S_DOLINE(v1, v2, 1);
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S_FILLLINE(0, 1);
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S_ENDLINE(v1, v2, 1);
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S_GOLINE(v2, v3, 2);
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S_DOLINE(v2, v3, 2);
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S_FILLLINE(0, 2);
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S_ENDLINE(23, v3, 2);
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y++;
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sy++;
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}
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}
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}
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} while (EnumMore);
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return IntEngLeave(&EnterLeave);
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}
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static
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BOOL
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IntEngIsNULLTriangle(TRIVERTEX *pVertex, GRADIENT_TRIANGLE *gt)
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{
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if(COMPAREVERTEX(VERTEX(Vertex1), VERTEX(Vertex2)))
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return TRUE;
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if(COMPAREVERTEX(VERTEX(Vertex1), VERTEX(Vertex3)))
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return TRUE;
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if(COMPAREVERTEX(VERTEX(Vertex2), VERTEX(Vertex3)))
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return TRUE;
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return FALSE;
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}
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BOOL
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APIENTRY
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EngGradientFill(
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_Inout_ SURFOBJ *psoDest,
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|
_In_ CLIPOBJ *pco,
|
|
_In_opt_ XLATEOBJ *pxlo,
|
|
_In_ TRIVERTEX *pVertex,
|
|
_In_ ULONG nVertex,
|
|
_In_ PVOID pMesh,
|
|
_In_ ULONG nMesh,
|
|
_In_ RECTL *prclExtents,
|
|
_In_ POINTL *pptlDitherOrg,
|
|
_In_ ULONG ulMode)
|
|
{
|
|
ULONG i;
|
|
BOOL ret = FALSE;
|
|
|
|
/* Check for NULL clip object */
|
|
if (pco == NULL)
|
|
{
|
|
/* Use the trivial one instead */
|
|
pco = (CLIPOBJ *)&gxcoTrivial;//.coClient;
|
|
}
|
|
|
|
switch(ulMode)
|
|
{
|
|
case GRADIENT_FILL_RECT_H:
|
|
case GRADIENT_FILL_RECT_V:
|
|
{
|
|
PGRADIENT_RECT gr = (PGRADIENT_RECT)pMesh;
|
|
for (i = 0; i < nMesh; i++, gr++)
|
|
{
|
|
if (!IntEngGradientFillRect(psoDest,
|
|
pco,
|
|
pxlo,
|
|
pVertex,
|
|
nVertex,
|
|
gr,
|
|
prclExtents,
|
|
pptlDitherOrg,
|
|
(ulMode == GRADIENT_FILL_RECT_H)))
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
ret = TRUE;
|
|
break;
|
|
}
|
|
case GRADIENT_FILL_TRIANGLE:
|
|
{
|
|
PGRADIENT_TRIANGLE gt = (PGRADIENT_TRIANGLE)pMesh;
|
|
for (i = 0; i < nMesh; i++, gt++)
|
|
{
|
|
if (IntEngIsNULLTriangle(pVertex, gt))
|
|
{
|
|
/* skip empty triangles */
|
|
continue;
|
|
}
|
|
if (!IntEngGradientFillTriangle(psoDest,
|
|
pco,
|
|
pxlo,
|
|
pVertex,
|
|
nVertex,
|
|
gt,
|
|
prclExtents,
|
|
pptlDitherOrg))
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
ret = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
BOOL
|
|
APIENTRY
|
|
IntEngGradientFill(
|
|
IN SURFOBJ *psoDest,
|
|
IN CLIPOBJ *pco,
|
|
IN XLATEOBJ *pxlo,
|
|
IN TRIVERTEX *pVertex,
|
|
IN ULONG nVertex,
|
|
IN PVOID pMesh,
|
|
IN ULONG nMesh,
|
|
IN RECTL *prclExtents,
|
|
IN POINTL *pptlDitherOrg,
|
|
IN ULONG ulMode)
|
|
{
|
|
BOOL Ret;
|
|
SURFACE *psurf;
|
|
ASSERT(psoDest);
|
|
|
|
psurf = CONTAINING_RECORD(psoDest, SURFACE, SurfObj);
|
|
ASSERT(psurf);
|
|
|
|
if (psurf->flags & HOOK_GRADIENTFILL)
|
|
{
|
|
Ret = GDIDEVFUNCS(psoDest).GradientFill(psoDest,
|
|
pco,
|
|
pxlo,
|
|
pVertex,
|
|
nVertex,
|
|
pMesh,
|
|
nMesh,
|
|
prclExtents,
|
|
pptlDitherOrg,
|
|
ulMode);
|
|
}
|
|
else
|
|
{
|
|
Ret = EngGradientFill(psoDest,
|
|
pco,
|
|
pxlo,
|
|
pVertex,
|
|
nVertex,
|
|
pMesh,
|
|
nMesh,
|
|
prclExtents,
|
|
pptlDitherOrg,
|
|
ulMode);
|
|
}
|
|
|
|
return Ret;
|
|
}
|