Initial revision

1 files changed, 516 insertions, 0 deletions

diff --git a/render/mipict.c b/render/mipict.c
new file mode 100644
index 000000000..3971a8f6e
--- /dev/null
+++ b/render/mipict.c
@@ -0,0 +1,516 @@
+/*
+ * $XFree86: xc/programs/Xserver/render/mipict.c,v 1.14 2002/11/06 22:45:36 keithp Exp $
+ *
+ * Copyright © 1999 Keith Packard
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission.  Keith Packard makes no
+ * representations about the suitability of this software for any purpose.  It
+ * is provided "as is" without express or implied warranty.
+ *
+ * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "scrnintstr.h"
+#include "gcstruct.h"
+#include "pixmapstr.h"
+#include "windowstr.h"
+#include "mi.h"
+#include "picturestr.h"
+#include "mipict.h"
+
+#ifndef __GNUC__
+#define __inline
+#endif
+
+int
+miCreatePicture (PicturePtr pPicture)
+{
+    return Success;
+}
+
+void
+miDestroyPicture (PicturePtr pPicture)
+{
+    if (pPicture->freeCompClip)
+	REGION_DESTROY(pPicture->pDrawable->pScreen, pPicture->pCompositeClip);
+}
+
+void
+miDestroyPictureClip (PicturePtr pPicture)
+{
+    switch (pPicture->clientClipType) {
+    case CT_NONE:
+	return;
+    case CT_PIXMAP:
+	(*pPicture->pDrawable->pScreen->DestroyPixmap) ((PixmapPtr) (pPicture->clientClip));
+	break;
+    default:
+	/*
+	 * we know we'll never have a list of rectangles, since ChangeClip
+	 * immediately turns them into a region
+	 */
+	REGION_DESTROY(pPicture->pDrawable->pScreen, pPicture->clientClip);
+	break;
+    }
+    pPicture->clientClip = NULL;
+    pPicture->clientClipType = CT_NONE;
+}    
+
+int
+miChangePictureClip (PicturePtr    pPicture,
+		     int	   type,
+		     pointer	   value,
+		     int	   n)
+{
+    ScreenPtr		pScreen = pPicture->pDrawable->pScreen;
+    PictureScreenPtr    ps = GetPictureScreen(pScreen);
+    pointer		clientClip;
+    int			clientClipType;
+    
+    switch (type) {
+    case CT_PIXMAP:
+	/* convert the pixmap to a region */
+	clientClip = (pointer) BITMAP_TO_REGION(pScreen, (PixmapPtr) value);
+	if (!clientClip)
+	    return BadAlloc;
+	clientClipType = CT_REGION;
+	(*pScreen->DestroyPixmap) ((PixmapPtr) value);
+	break;
+    case CT_REGION:
+	clientClip = value;
+	clientClipType = CT_REGION;
+	break;
+    case CT_NONE:
+	clientClip = 0;
+	clientClipType = CT_NONE;
+	break;
+    default:
+	clientClip = (pointer) RECTS_TO_REGION(pScreen, n,
+					       (xRectangle *) value,
+					       type);
+	if (!clientClip)
+	    return BadAlloc;
+	clientClipType = CT_REGION;
+	xfree(value);
+	break;
+    }
+    (*ps->DestroyPictureClip) (pPicture);
+    pPicture->clientClip = clientClip;
+    pPicture->clientClipType = clientClipType;
+    pPicture->stateChanges |= CPClipMask;
+    return Success;
+}
+
+void
+miChangePicture (PicturePtr pPicture,
+		 Mask       mask)
+{
+    return;
+}
+
+void
+miValidatePicture (PicturePtr pPicture,
+		   Mask       mask)
+{
+    DrawablePtr	    pDrawable = pPicture->pDrawable;
+
+    if ((mask & (CPClipXOrigin|CPClipYOrigin|CPClipMask|CPSubwindowMode)) ||
+	(pDrawable->serialNumber != (pPicture->serialNumber & DRAWABLE_SERIAL_BITS)))
+    {
+	if (pDrawable->type == DRAWABLE_WINDOW)
+	{
+	    WindowPtr       pWin = (WindowPtr) pDrawable;
+	    RegionPtr       pregWin;
+	    Bool            freeTmpClip, freeCompClip;
+
+	    if (pPicture->subWindowMode == IncludeInferiors)
+	    {
+		pregWin = NotClippedByChildren(pWin);
+		freeTmpClip = TRUE;
+	    }
+	    else
+	    {
+		pregWin = &pWin->clipList;
+		freeTmpClip = FALSE;
+	    }
+	    freeCompClip = pPicture->freeCompClip;
+
+	    /*
+	     * if there is no client clip, we can get by with just keeping the
+	     * pointer we got, and remembering whether or not should destroy
+	     * (or maybe re-use) it later.  this way, we avoid unnecessary
+	     * copying of regions.  (this wins especially if many clients clip
+	     * by children and have no client clip.)
+	     */
+	    if (pPicture->clientClipType == CT_NONE)
+	    {
+		if (freeCompClip)
+		    REGION_DESTROY(pScreen, pPicture->pCompositeClip);
+		pPicture->pCompositeClip = pregWin;
+		pPicture->freeCompClip = freeTmpClip;
+	    }
+	    else
+	    {
+		/*
+		 * we need one 'real' region to put into the composite clip. if
+		 * pregWin the current composite clip are real, we can get rid of
+		 * one. if pregWin is real and the current composite clip isn't,
+		 * use pregWin for the composite clip. if the current composite
+		 * clip is real and pregWin isn't, use the current composite
+		 * clip. if neither is real, create a new region.
+		 */
+
+		REGION_TRANSLATE(pScreen, pPicture->clientClip,
+				 pDrawable->x + pPicture->clipOrigin.x,
+				 pDrawable->y + pPicture->clipOrigin.y);
+
+		if (freeCompClip)
+		{
+		    REGION_INTERSECT(pPicture->pScreen, pPicture->pCompositeClip,
+				     pregWin, pPicture->clientClip);
+		    if (freeTmpClip)
+			REGION_DESTROY(pScreen, pregWin);
+		}
+		else if (freeTmpClip)
+		{
+		    REGION_INTERSECT(pScreen, pregWin, pregWin, pPicture->clientClip);
+		    pPicture->pCompositeClip = pregWin;
+		}
+		else
+		{
+		    pPicture->pCompositeClip = REGION_CREATE(pScreen, NullBox, 0);
+		    REGION_INTERSECT(pScreen, pPicture->pCompositeClip,
+				     pregWin, pPicture->clientClip);
+		}
+		pPicture->freeCompClip = TRUE;
+		REGION_TRANSLATE(pScreen, pPicture->clientClip,
+				 -(pDrawable->x + pPicture->clipOrigin.x),
+				 -(pDrawable->y + pPicture->clipOrigin.y));
+	    }
+	}	/* end of composite clip for a window */
+	else
+	{
+	    BoxRec          pixbounds;
+
+	    /* XXX should we translate by drawable.x/y here ? */
+	    /* If you want pixmaps in offscreen memory, yes */
+	    pixbounds.x1 = pDrawable->x;
+	    pixbounds.y1 = pDrawable->y;
+	    pixbounds.x2 = pDrawable->x + pDrawable->width;
+	    pixbounds.y2 = pDrawable->y + pDrawable->height;
+
+	    if (pPicture->freeCompClip)
+	    {
+		REGION_RESET(pScreen, pPicture->pCompositeClip, &pixbounds);
+	    }
+	    else
+	    {
+		pPicture->freeCompClip = TRUE;
+		pPicture->pCompositeClip = REGION_CREATE(pScreen, &pixbounds, 1);
+	    }
+
+	    if (pPicture->clientClipType == CT_REGION)
+	    {
+		if(pDrawable->x || pDrawable->y) {
+		    REGION_TRANSLATE(pScreen, pPicture->clientClip,
+				     pDrawable->x + pPicture->clipOrigin.x, 
+				     pDrawable->y + pPicture->clipOrigin.y);
+		    REGION_INTERSECT(pScreen, pPicture->pCompositeClip,
+				     pPicture->pCompositeClip, pPicture->clientClip);
+		    REGION_TRANSLATE(pScreen, pPicture->clientClip,
+				     -(pDrawable->x + pPicture->clipOrigin.x), 
+				     -(pDrawable->y + pPicture->clipOrigin.y));
+		} else {
+		    REGION_TRANSLATE(pScreen, pPicture->pCompositeClip,
+				     -pPicture->clipOrigin.x, -pPicture->clipOrigin.y);
+		    REGION_INTERSECT(pScreen, pPicture->pCompositeClip,
+				     pPicture->pCompositeClip, pPicture->clientClip);
+		    REGION_TRANSLATE(pScreen, pPicture->pCompositeClip,
+				     pPicture->clipOrigin.x, pPicture->clipOrigin.y);
+		}
+	    }
+	}	/* end of composite clip for pixmap */
+    }
+}
+
+#define BOUND(v)	(INT16) ((v) < MINSHORT ? MINSHORT : (v) > MAXSHORT ? MAXSHORT : (v))
+
+static __inline Bool
+miClipPictureReg (RegionPtr	pRegion,
+		  RegionPtr	pClip,
+		  int		dx,
+		  int		dy)
+{
+    if (REGION_NUM_RECTS(pRegion) == 1 &&
+	REGION_NUM_RECTS(pClip) == 1)
+    {
+	BoxPtr  pRbox = REGION_RECTS(pRegion);
+	BoxPtr  pCbox = REGION_RECTS(pClip);
+	int	v;
+
+	if (pRbox->x1 < (v = pCbox->x1 + dx))
+	    pRbox->x1 = BOUND(v);
+	if (pRbox->x2 > (v = pCbox->x2 + dx))
+	    pRbox->x2 = BOUND(v);
+	if (pRbox->y1 < (v = pCbox->y1 + dy))
+	    pRbox->y1 = BOUND(v);
+	if (pRbox->y2 > (v = pCbox->y2 + dy))
+	    pRbox->y2 = BOUND(v);
+	if (pRbox->x1 >= pRbox->x2 ||
+	    pRbox->y1 >= pRbox->y2)
+	{
+	    REGION_EMPTY(pScreen, pRegion);
+	}
+    }
+    else
+    {
+	REGION_TRANSLATE(pScreen, pRegion, dx, dy);
+	if (!REGION_INTERSECT (pScreen, pRegion, pRegion, pClip))
+	    return FALSE;
+	REGION_TRANSLATE(pScreen, pRegion, -dx, -dy);
+    }
+    return TRUE;
+}
+		  
+static __inline Bool
+miClipPictureSrc (RegionPtr	pRegion,
+		  PicturePtr	pPicture,
+		  int		dx,
+		  int		dy)
+{
+    /* XXX what to do with clipping from transformed pictures? */
+    if (pPicture->transform)
+	return TRUE;
+    if (pPicture->repeat)
+    {
+	if (pPicture->clientClipType != CT_NONE)
+	{
+	    REGION_TRANSLATE(pScreen, pRegion, 
+			     dx - pPicture->clipOrigin.x,
+			     dy - pPicture->clipOrigin.y);
+	    if (!REGION_INTERSECT (pScreen, pRegion, pRegion, 
+				   (RegionPtr) pPicture->clientClip))
+		return FALSE;
+	    REGION_TRANSLATE(pScreen, pRegion, 
+			     - (dx - pPicture->clipOrigin.x),
+			     - (dy - pPicture->clipOrigin.y));
+	}
+	return TRUE;
+    }
+    else
+    {
+	return miClipPictureReg (pRegion,
+				 pPicture->pCompositeClip,
+				 dx,
+				 dy);
+    }
+}
+
+Bool
+miComputeCompositeRegion (RegionPtr	pRegion,
+			  PicturePtr	pSrc,
+			  PicturePtr	pMask,
+			  PicturePtr	pDst,
+			  INT16		xSrc,
+			  INT16		ySrc,
+			  INT16		xMask,
+			  INT16		yMask,
+			  INT16		xDst,
+			  INT16		yDst,
+			  CARD16	width,
+			  CARD16	height)
+{
+    int		v;
+
+    pRegion->extents.x1 = xDst;
+    v = xDst + width;
+    pRegion->extents.x2 = BOUND(v);
+    pRegion->extents.y1 = yDst;
+    v = yDst + height;
+    pRegion->extents.y2 = BOUND(v);
+    pRegion->data = 0;
+    /* Check for empty operation */
+    if (pRegion->extents.x1 >= pRegion->extents.x2 ||
+	pRegion->extents.y1 >= pRegion->extents.y2)
+    {
+	REGION_EMPTY (pDst->pDrawable->pScreen, pRegion);
+	return TRUE;
+    }
+    /* clip against src */
+    if (!miClipPictureSrc (pRegion, pSrc, xDst - xSrc, yDst - ySrc))
+    {
+	REGION_UNINIT (pScreen, pRegion);
+	return FALSE;
+    }
+    if (pSrc->alphaMap)
+    {
+	if (!miClipPictureSrc (pRegion, pSrc->alphaMap,
+			       xDst - (xSrc + pSrc->alphaOrigin.x),
+			       yDst - (ySrc + pSrc->alphaOrigin.y)))
+	{
+	    REGION_UNINIT (pScreen, pRegion);
+	    return FALSE;
+	}
+    }
+    /* clip against mask */
+    if (pMask)
+    {
+	if (!miClipPictureSrc (pRegion, pMask, xDst - xMask, yDst - yMask))
+	{
+	    REGION_UNINIT (pScreen, pRegion);
+	    return FALSE;
+	}	
+	if (pMask->alphaMap)
+	{
+	    if (!miClipPictureSrc (pRegion, pMask->alphaMap,
+				   xDst - (xMask + pMask->alphaOrigin.x),
+				   yDst - (yMask + pMask->alphaOrigin.y)))
+	    {
+		REGION_UNINIT (pScreen, pRegion);
+		return FALSE;
+	    }
+	}
+    }
+    if (!miClipPictureReg (pRegion, pDst->pCompositeClip, 0, 0))
+    {
+	REGION_UNINIT (pScreen, pRegion);
+	return FALSE;
+    }
+    if (pDst->alphaMap)
+    {
+	if (!miClipPictureReg (pRegion, pDst->alphaMap->pCompositeClip,
+			       -pDst->alphaOrigin.x,
+			       -pDst->alphaOrigin.y))
+	{
+	    REGION_UNINIT (pScreen, pRegion);
+	    return FALSE;
+	}
+    }
+    return TRUE;
+}
+
+void
+miRenderColorToPixel (PictFormatPtr format,
+		      xRenderColor  *color,
+		      CARD32	    *pixel)
+{
+    CARD32	    r, g, b, a;
+    miIndexedPtr    pIndexed;
+
+    switch (format->type) {
+    case PictTypeDirect:
+	r = color->red >> (16 - Ones (format->direct.redMask));
+	g = color->green >> (16 - Ones (format->direct.greenMask));
+	b = color->blue >> (16 - Ones (format->direct.blueMask));
+	a = color->alpha >> (16 - Ones (format->direct.alphaMask));
+	r = r << format->direct.red;
+	g = g << format->direct.green;
+	b = b << format->direct.blue;
+	a = a << format->direct.alpha;
+	*pixel = r|g|b|a;
+	break;
+    case PictTypeIndexed:
+	pIndexed = (miIndexedPtr) (format->index.devPrivate);
+	if (pIndexed->color)
+	{
+	    r = color->red >> 11;
+	    g = color->green >> 11;
+	    b = color->blue >> 11;
+	    *pixel = miIndexToEnt15 (pIndexed, (r << 10) | (g << 5) | b);
+	}
+	else
+	{
+	    r = color->red >> 8;
+	    g = color->green >> 8;
+	    b = color->blue >> 8;
+	    *pixel = miIndexToEntY24 (pIndexed, (r << 16) | (g << 8) | b);
+	}
+	break;
+    }
+}
+
+static CARD16
+miFillColor (CARD32 pixel, int bits)
+{
+    while (bits < 16)
+    {
+	pixel |= pixel << bits;
+	bits <<= 1;
+    }
+    return (CARD16) pixel;
+}
+
+void
+miRenderPixelToColor (PictFormatPtr format,
+		      CARD32	    pixel,
+		      xRenderColor  *color)
+{
+    CARD32	    r, g, b, a;
+    miIndexedPtr    pIndexed;
+    
+    switch (format->type) {
+    case PictTypeDirect:
+	r = (pixel >> format->direct.red) & format->direct.redMask;
+	g = (pixel >> format->direct.green) & format->direct.greenMask;
+	b = (pixel >> format->direct.blue) & format->direct.blueMask;
+	a = (pixel >> format->direct.alpha) & format->direct.alphaMask;
+	color->red = miFillColor (r, Ones (format->direct.redMask));
+	color->green = miFillColor (r, Ones (format->direct.greenMask));
+	color->blue = miFillColor (r, Ones (format->direct.blueMask));
+	color->alpha = miFillColor (r, Ones (format->direct.alphaMask));
+	break;
+    case PictTypeIndexed:
+	pIndexed = (miIndexedPtr) (format->index.devPrivate);
+	pixel = pIndexed->rgba[pixel & (MI_MAX_INDEXED-1)];
+	r = (pixel >> 16) & 0xff;
+	g = (pixel >>  8) & 0xff;
+	b = (pixel      ) & 0xff;
+	color->red = miFillColor (r, 8);
+	color->green = miFillColor (g, 8);
+	color->blue = miFillColor (b, 8);
+	color->alpha = 0xffff;
+	break;
+    }
+}
+
+Bool
+miPictureInit (ScreenPtr pScreen, PictFormatPtr formats, int nformats)
+{
+    PictureScreenPtr    ps;
+    
+    if (!PictureInit (pScreen, formats, nformats))
+	return FALSE;
+    ps = GetPictureScreen(pScreen);
+    ps->CreatePicture = miCreatePicture;
+    ps->DestroyPicture = miDestroyPicture;
+    ps->ChangePictureClip = miChangePictureClip;
+    ps->DestroyPictureClip = miDestroyPictureClip;
+    ps->ChangePicture = miChangePicture;
+    ps->ValidatePicture = miValidatePicture;
+    ps->InitIndexed = miInitIndexed;
+    ps->CloseIndexed = miCloseIndexed;
+    ps->UpdateIndexed = miUpdateIndexed;
+
+    /* MI rendering routines */
+    ps->Composite	= 0;			/* requires DDX support */
+    ps->Glyphs		= miGlyphs;
+    ps->CompositeRects	= miCompositeRects;
+    ps->Trapezoids	= miTrapezoids;
+    ps->Triangles	= miTriangles;
+    ps->TriStrip	= miTriStrip;
+    ps->TriFan		= miTriFan;
+    
+    return TRUE;
+}