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