644 lines
15 KiB
C
644 lines
15 KiB
C
/*
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* Support for RENDER extension while protecting the alpha channel
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*/
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/*
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* Copyright (c) 2002-2003 Torrey T. Lyons. All Rights Reserved.
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* Copyright (c) 2002 Apple Computer, Inc. All Rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the name(s) of the above copyright
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* holders shall not be used in advertising or otherwise to promote the sale,
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* use or other dealings in this Software without prior written authorization.
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*/
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/* This file is largely based on fbcompose.c and fbpict.c, which contain
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* the following copyright:
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*
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* Copyright © 2000 Keith Packard, member of The XFree86 Project, Inc.
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*/
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/* $XFree86: xc/programs/Xserver/miext/rootless/safeAlpha/safeAlphaPicture.c,v 1.3 2003/10/24 00:33:15 torrey Exp $ */
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#ifdef RENDER
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#include "fb.h"
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#include "picturestr.h"
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#include "mipict.h"
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#include "fbpict.h"
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#include "safeAlpha.h"
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#include "rootlessCommon.h"
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# define mod(a,b) ((b) == 1 ? 0 : (a) >= 0 ? (a) % (b) : (b) - (-a) % (b))
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typedef void (*CompositeFunc) (CARD8 op,
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PicturePtr pSrc,
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PicturePtr pMask,
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PicturePtr pDst,
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INT16 xSrc,
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INT16 ySrc,
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INT16 xMask,
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INT16 yMask,
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INT16 xDst,
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INT16 yDst,
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CARD16 width,
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CARD16 height);
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/* Optimized version of fbCompositeSolidMask_nx8x8888 */
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void
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SafeAlphaCompositeSolidMask_nx8x8888(
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CARD8 op,
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PicturePtr pSrc,
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PicturePtr pMask,
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PicturePtr pDst,
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INT16 xSrc,
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INT16 ySrc,
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INT16 xMask,
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INT16 yMask,
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INT16 xDst,
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INT16 yDst,
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CARD16 width,
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CARD16 height)
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{
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CARD32 src, srca;
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CARD32 *dstLine, *dst, d, dstMask;
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CARD8 *maskLine, *mask, m;
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FbStride dstStride, maskStride;
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CARD16 w;
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fbComposeGetSolid(pSrc, src, pDst->format);
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dstMask = FbFullMask (pDst->pDrawable->depth);
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srca = src >> 24;
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if (src == 0)
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return;
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fbComposeGetStart (pDst, xDst, yDst, CARD32, dstStride, dstLine, 1);
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fbComposeGetStart (pMask, xMask, yMask, CARD8, maskStride, maskLine, 1);
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if (dstMask == FB_ALLONES && pDst->pDrawable->bitsPerPixel == 32 &&
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width * height > rootless_CompositePixels_threshold &&
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SCREENREC(pDst->pDrawable->pScreen)->imp->CompositePixels)
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{
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void *srcp[2], *destp[2];
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unsigned int dest_rowbytes[2];
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unsigned int fn;
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srcp[0] = &src; srcp[1] = &src;
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/* null rowbytes pointer means use first value as a constant */
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destp[0] = dstLine; destp[1] = dstLine;
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dest_rowbytes[0] = dstStride * 4; dest_rowbytes[1] = dest_rowbytes[0];
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fn = RL_COMPOSITE_FUNCTION(RL_COMPOSITE_OVER, RL_DEPTH_ARGB8888,
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RL_DEPTH_A8, RL_DEPTH_ARGB8888);
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if (SCREENREC(pDst->pDrawable->pScreen)->imp->CompositePixels(
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width, height, fn, srcp, NULL,
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maskLine, maskStride,
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destp, dest_rowbytes) == Success)
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{
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return;
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}
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}
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while (height--)
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{
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dst = dstLine;
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dstLine += dstStride;
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mask = maskLine;
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maskLine += maskStride;
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w = width;
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while (w--)
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{
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m = *mask++;
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if (m == 0xff)
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{
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if (srca == 0xff)
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*dst = src & dstMask;
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else
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*dst = fbOver (src, *dst) & dstMask;
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}
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else if (m)
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{
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d = fbIn (src, m);
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*dst = fbOver (d, *dst) & dstMask;
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}
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dst++;
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}
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}
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}
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void
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SafeAlphaComposite (CARD8 op,
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PicturePtr pSrc,
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PicturePtr pMask,
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PicturePtr pDst,
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INT16 xSrc,
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INT16 ySrc,
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INT16 xMask,
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INT16 yMask,
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INT16 xDst,
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INT16 yDst,
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CARD16 width,
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CARD16 height)
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{
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RegionRec region;
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int n;
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BoxPtr pbox;
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CompositeFunc func = 0;
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Bool srcRepeat = pSrc->repeat;
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Bool maskRepeat = FALSE;
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Bool srcAlphaMap = pSrc->alphaMap != 0;
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Bool maskAlphaMap = FALSE;
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Bool dstAlphaMap = pDst->alphaMap != 0;
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int x_msk, y_msk, x_src, y_src, x_dst, y_dst;
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int w, h, w_this, h_this;
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int dstDepth = pDst->pDrawable->depth;
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int oldFormat = pDst->format;
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xDst += pDst->pDrawable->x;
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yDst += pDst->pDrawable->y;
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xSrc += pSrc->pDrawable->x;
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ySrc += pSrc->pDrawable->y;
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if (pMask)
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{
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xMask += pMask->pDrawable->x;
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yMask += pMask->pDrawable->y;
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maskRepeat = pMask->repeat;
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maskAlphaMap = pMask->alphaMap != 0;
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}
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/*
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* We can use the more optimized fbpict code, but it sets bits above
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* the depth to zero. Temporarily adjust destination depth if needed.
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*/
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if (pDst->pDrawable->type == DRAWABLE_WINDOW
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&& pDst->pDrawable->depth == 24
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&& pDst->pDrawable->bitsPerPixel == 32)
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{
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pDst->pDrawable->depth = 32;
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}
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/* For rootless preserve the alpha in x8r8g8b8 which really is
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* a8r8g8b8
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*/
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if (oldFormat == PICT_x8r8g8b8)
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{
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pDst->format = PICT_a8r8g8b8;
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}
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if (!pSrc->transform && !(pMask && pMask->transform))
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if (!maskAlphaMap && !srcAlphaMap && !dstAlphaMap)
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switch (op) {
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case PictOpSrc:
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#ifdef USE_MMX
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if (!pMask && pSrc->format == pDst->format &&
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pSrc->pDrawable != pDst->pDrawable)
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{
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func = fbCompositeCopyAreammx;
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}
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#endif
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break;
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case PictOpOver:
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if (pMask)
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{
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if (srcRepeat &&
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pSrc->pDrawable->width == 1 &&
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pSrc->pDrawable->height == 1)
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{
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srcRepeat = FALSE;
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if (PICT_FORMAT_COLOR(pSrc->format)) {
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switch (pMask->format) {
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case PICT_a8:
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switch (pDst->format) {
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case PICT_r5g6b5:
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case PICT_b5g6r5:
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#ifdef USE_MMX
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if (fbHaveMMX())
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func = fbCompositeSolidMask_nx8x0565mmx;
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else
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#endif
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func = fbCompositeSolidMask_nx8x0565;
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break;
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case PICT_r8g8b8:
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case PICT_b8g8r8:
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func = fbCompositeSolidMask_nx8x0888;
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break;
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case PICT_a8r8g8b8:
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case PICT_x8r8g8b8:
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case PICT_a8b8g8r8:
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case PICT_x8b8g8r8:
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func = SafeAlphaCompositeSolidMask_nx8x8888;
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break;
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}
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break;
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case PICT_a8r8g8b8:
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if (pMask->componentAlpha) {
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switch (pDst->format) {
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case PICT_a8r8g8b8:
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case PICT_x8r8g8b8:
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#ifdef USE_MMX
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if (fbHaveMMX())
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func = fbCompositeSolidMask_nx8888x8888Cmmx;
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else
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#endif
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func = fbCompositeSolidMask_nx8888x8888C;
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break;
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case PICT_r5g6b5:
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#ifdef USE_MMX
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if (fbHaveMMX())
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func = fbCompositeSolidMask_nx8888x0565Cmmx;
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else
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#endif
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func = fbCompositeSolidMask_nx8888x0565C;
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break;
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}
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}
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break;
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case PICT_a8b8g8r8:
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if (pMask->componentAlpha) {
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switch (pDst->format) {
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case PICT_a8b8g8r8:
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case PICT_x8b8g8r8:
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#ifdef USE_MMX
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if (fbHaveMMX())
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func = fbCompositeSolidMask_nx8888x8888Cmmx;
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else
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#endif
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func = fbCompositeSolidMask_nx8888x8888C;
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break;
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case PICT_b5g6r5:
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#ifdef USE_MMX
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if (fbHaveMMX())
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func = fbCompositeSolidMask_nx8888x0565Cmmx;
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else
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#endif
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func = fbCompositeSolidMask_nx8888x0565C;
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break;
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}
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}
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break;
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case PICT_a1:
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switch (pDst->format) {
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case PICT_r5g6b5:
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case PICT_b5g6r5:
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case PICT_r8g8b8:
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case PICT_b8g8r8:
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case PICT_a8r8g8b8:
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case PICT_x8r8g8b8:
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case PICT_a8b8g8r8:
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case PICT_x8b8g8r8:
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func = fbCompositeSolidMask_nx1xn;
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break;
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}
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break;
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}
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}
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}
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else /* has mask and non-repeating source */
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{
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if (pSrc->pDrawable == pMask->pDrawable &&
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xSrc == xMask && ySrc == yMask &&
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!pMask->componentAlpha)
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{
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/* source == mask: non-premultiplied data */
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switch (pSrc->format) {
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case PICT_x8b8g8r8:
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switch (pMask->format) {
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case PICT_a8r8g8b8:
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case PICT_a8b8g8r8:
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switch (pDst->format) {
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case PICT_a8r8g8b8:
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case PICT_x8r8g8b8:
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#ifdef USE_MMX
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if (fbHaveMMX())
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func = fbCompositeSrc_8888RevNPx8888mmx;
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#endif
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break;
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case PICT_r5g6b5:
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#ifdef USE_MMX
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if (fbHaveMMX())
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func = fbCompositeSrc_8888RevNPx0565mmx;
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#endif
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break;
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}
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break;
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}
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break;
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case PICT_x8r8g8b8:
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switch (pMask->format) {
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case PICT_a8r8g8b8:
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case PICT_a8b8g8r8:
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switch (pDst->format) {
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case PICT_a8b8g8r8:
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case PICT_x8b8g8r8:
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#ifdef USE_MMX
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if (fbHaveMMX())
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func = fbCompositeSrc_8888RevNPx8888mmx;
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#endif
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break;
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case PICT_r5g6b5:
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#ifdef USE_MMX
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if (fbHaveMMX())
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func = fbCompositeSrc_8888RevNPx0565mmx;
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#endif
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break;
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}
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break;
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}
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break;
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}
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break;
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}
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else
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{
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/* non-repeating source, repeating mask => translucent window */
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if (maskRepeat &&
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pMask->pDrawable->width == 1 &&
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pMask->pDrawable->height == 1)
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{
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if (pSrc->format == PICT_x8r8g8b8 &&
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pDst->format == PICT_x8r8g8b8 &&
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pMask->format == PICT_a8)
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{
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#ifdef USE_MMX
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if (fbHaveMMX())
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func = fbCompositeSrc_8888x8x8888mmx;
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#endif
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}
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}
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}
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}
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}
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else /* no mask */
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{
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if (srcRepeat &&
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pSrc->pDrawable->width == 1 &&
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pSrc->pDrawable->height == 1)
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{
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/* no mask and repeating source */
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switch (pSrc->format) {
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case PICT_a8r8g8b8:
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switch (pDst->format) {
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case PICT_a8r8g8b8:
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case PICT_x8r8g8b8:
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#ifdef USE_MMX
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if (fbHaveMMX())
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{
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srcRepeat = FALSE;
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func = fbCompositeSolid_nx8888mmx;
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}
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#endif
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break;
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case PICT_r5g6b5:
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#ifdef USE_MMX
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if (fbHaveMMX())
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{
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srcRepeat = FALSE;
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func = fbCompositeSolid_nx0565mmx;
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}
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#endif
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break;
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}
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break;
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}
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}
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else
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{
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switch (pSrc->format) {
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case PICT_a8r8g8b8:
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switch (pDst->format) {
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case PICT_a8r8g8b8:
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case PICT_x8r8g8b8:
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#ifdef USE_MMX
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if (fbHaveMMX())
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func = fbCompositeSrc_8888x8888mmx;
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else
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#endif
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func = fbCompositeSrc_8888x8888;
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break;
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case PICT_r8g8b8:
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func = fbCompositeSrc_8888x0888;
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break;
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case PICT_r5g6b5:
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func = fbCompositeSrc_8888x0565;
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break;
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}
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break;
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case PICT_x8r8g8b8:
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switch (pDst->format) {
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case PICT_a8r8g8b8:
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case PICT_x8r8g8b8:
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#ifdef USE_MMX
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if (fbHaveMMX())
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func = fbCompositeCopyAreammx;
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#endif
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break;
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}
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case PICT_x8b8g8r8:
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switch (pDst->format) {
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case PICT_a8b8g8r8:
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case PICT_x8b8g8r8:
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#ifdef USE_MMX
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if (fbHaveMMX())
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func = fbCompositeCopyAreammx;
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#endif
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break;
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}
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break;
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case PICT_a8b8g8r8:
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switch (pDst->format) {
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case PICT_a8b8g8r8:
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case PICT_x8b8g8r8:
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#ifdef USE_MMX
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if (fbHaveMMX())
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func = fbCompositeSrc_8888x8888mmx;
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else
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#endif
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func = fbCompositeSrc_8888x8888;
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break;
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case PICT_b8g8r8:
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func = fbCompositeSrc_8888x0888;
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break;
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case PICT_b5g6r5:
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func = fbCompositeSrc_8888x0565;
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break;
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}
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break;
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case PICT_r5g6b5:
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switch (pDst->format) {
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case PICT_r5g6b5:
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func = fbCompositeSrc_0565x0565;
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break;
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}
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break;
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case PICT_b5g6r5:
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switch (pDst->format) {
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case PICT_b5g6r5:
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func = fbCompositeSrc_0565x0565;
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break;
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}
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break;
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}
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}
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}
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break;
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case PictOpAdd:
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if (pMask == 0)
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{
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switch (pSrc->format) {
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case PICT_a8r8g8b8:
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switch (pDst->format) {
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case PICT_a8r8g8b8:
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#ifdef USE_MMX
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if (fbHaveMMX())
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func = fbCompositeSrcAdd_8888x8888mmx;
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else
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#endif
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func = fbCompositeSrcAdd_8888x8888;
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break;
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}
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break;
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case PICT_a8b8g8r8:
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switch (pDst->format) {
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case PICT_a8b8g8r8:
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#ifdef USE_MMX
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if (fbHaveMMX())
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|
func = fbCompositeSrcAdd_8888x8888mmx;
|
|
else
|
|
#endif
|
|
func = fbCompositeSrcAdd_8888x8888;
|
|
break;
|
|
}
|
|
break;
|
|
case PICT_a8:
|
|
switch (pDst->format) {
|
|
case PICT_a8:
|
|
#ifdef USE_MMX
|
|
if (fbHaveMMX())
|
|
func = fbCompositeSrcAdd_8000x8000mmx;
|
|
else
|
|
#endif
|
|
func = fbCompositeSrcAdd_8000x8000;
|
|
break;
|
|
}
|
|
break;
|
|
case PICT_a1:
|
|
switch (pDst->format) {
|
|
case PICT_a1:
|
|
func = fbCompositeSrcAdd_1000x1000;
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (!func) {
|
|
/* no fast path, use the general code */
|
|
fbCompositeGeneral(op, pSrc, pMask, pDst, xSrc, ySrc, xMask, yMask, xDst, yDst, width, height);
|
|
// Reset destination depth and format to their true value
|
|
pDst->pDrawable->depth = dstDepth;
|
|
pDst->format = oldFormat;
|
|
return;
|
|
}
|
|
|
|
if (!miComputeCompositeRegion (®ion,
|
|
pSrc,
|
|
pMask,
|
|
pDst,
|
|
xSrc,
|
|
ySrc,
|
|
xMask,
|
|
yMask,
|
|
xDst,
|
|
yDst,
|
|
width,
|
|
height))
|
|
return;
|
|
|
|
n = REGION_NUM_RECTS (®ion);
|
|
pbox = REGION_RECTS (®ion);
|
|
while (n--)
|
|
{
|
|
h = pbox->y2 - pbox->y1;
|
|
y_src = pbox->y1 - yDst + ySrc;
|
|
y_msk = pbox->y1 - yDst + yMask;
|
|
y_dst = pbox->y1;
|
|
while (h)
|
|
{
|
|
h_this = h;
|
|
w = pbox->x2 - pbox->x1;
|
|
x_src = pbox->x1 - xDst + xSrc;
|
|
x_msk = pbox->x1 - xDst + xMask;
|
|
x_dst = pbox->x1;
|
|
if (maskRepeat)
|
|
{
|
|
y_msk = mod (y_msk, pMask->pDrawable->height);
|
|
if (h_this > pMask->pDrawable->height - y_msk)
|
|
h_this = pMask->pDrawable->height - y_msk;
|
|
}
|
|
if (srcRepeat)
|
|
{
|
|
y_src = mod (y_src, pSrc->pDrawable->height);
|
|
if (h_this > pSrc->pDrawable->height - y_src)
|
|
h_this = pSrc->pDrawable->height - y_src;
|
|
}
|
|
while (w)
|
|
{
|
|
w_this = w;
|
|
if (maskRepeat)
|
|
{
|
|
x_msk = mod (x_msk, pMask->pDrawable->width);
|
|
if (w_this > pMask->pDrawable->width - x_msk)
|
|
w_this = pMask->pDrawable->width - x_msk;
|
|
}
|
|
if (srcRepeat)
|
|
{
|
|
x_src = mod (x_src, pSrc->pDrawable->width);
|
|
if (w_this > pSrc->pDrawable->width - x_src)
|
|
w_this = pSrc->pDrawable->width - x_src;
|
|
}
|
|
(*func) (op, pSrc, pMask, pDst,
|
|
x_src, y_src, x_msk, y_msk, x_dst, y_dst,
|
|
w_this, h_this);
|
|
w -= w_this;
|
|
x_src += w_this;
|
|
x_msk += w_this;
|
|
x_dst += w_this;
|
|
}
|
|
h -= h_this;
|
|
y_src += h_this;
|
|
y_msk += h_this;
|
|
y_dst += h_this;
|
|
}
|
|
pbox++;
|
|
}
|
|
REGION_UNINIT (pDst->pDrawable->pScreen, ®ion);
|
|
|
|
// Reset destination depth/format to its true value
|
|
pDst->pDrawable->depth = dstDepth;
|
|
pDst->format = oldFormat;
|
|
}
|
|
|
|
#endif /* RENDER */
|