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IABSD.fr/xenocara/xserver/exa/exa_render.c
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- xserver/exa/exa_render.c
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/* * Copyright © 2001 Keith Packard * * Partly based on code that is Copyright © The XFree86 Project Inc. * * 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. */ #ifdef HAVE_DIX_CONFIG_H #include <dix-config.h> #endif #include <stdlib.h> #include "exa_priv.h" #ifdef RENDER #include "mipict.h" #if DEBUG_TRACE_FALL static void exaCompositeFallbackPictDesc(PicturePtr pict, char *string, int n) { char format[20]; char size[20]; char loc; int temp; if (!pict) { snprintf(string, n, "None"); return; } switch (pict->format) { case PICT_a8r8g8b8: snprintf(format, 20, "ARGB8888"); break; case PICT_x8r8g8b8: snprintf(format, 20, "XRGB8888"); break; case PICT_b8g8r8a8: snprintf(format, 20, "BGRA8888"); break; case PICT_b8g8r8x8: snprintf(format, 20, "BGRX8888"); break; case PICT_r5g6b5: snprintf(format, 20, "RGB565 "); break; case PICT_x1r5g5b5: snprintf(format, 20, "RGB555 "); break; case PICT_a8: snprintf(format, 20, "A8 "); break; case PICT_a1: snprintf(format, 20, "A1 "); break; default: snprintf(format, 20, "0x%x", (int)pict->format); break; } if (pict->pDrawable) { loc = exaGetOffscreenPixmap(pict->pDrawable, &temp, &temp) ? 's' : 'm'; snprintf(size, 20, "%dx%d%s", pict->pDrawable->width, pict->pDrawable->height, pict->repeat ? " R" : ""); } else { loc = '-'; snprintf(size, 20, "%s", pict->repeat ? " R" : ""); } snprintf(string, n, "%p:%c fmt %s (%s)", pict->pDrawable, loc, format, size); } static void exaPrintCompositeFallback(CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst) { char sop[20]; char srcdesc[40], maskdesc[40], dstdesc[40]; switch(op) { case PictOpSrc: sprintf(sop, "Src"); break; case PictOpOver: sprintf(sop, "Over"); break; default: sprintf(sop, "0x%x", (int)op); break; } exaCompositeFallbackPictDesc(pSrc, srcdesc, 40); exaCompositeFallbackPictDesc(pMask, maskdesc, 40); exaCompositeFallbackPictDesc(pDst, dstdesc, 40); ErrorF("Composite fallback: op %s, \n" " src %s, \n" " mask %s, \n" " dst %s, \n", sop, srcdesc, maskdesc, dstdesc); } #endif /* DEBUG_TRACE_FALL */ Bool exaOpReadsDestination (CARD8 op) { /* FALSE (does not read destination) is the list of ops in the protocol * document with "0" in the "Fb" column and no "Ab" in the "Fa" column. * That's just Clear and Src. ReduceCompositeOp() will already have * converted con/disjoint clear/src to Clear or Src. */ switch (op) { case PictOpClear: case PictOpSrc: return FALSE; default: return TRUE; } } static Bool exaGetPixelFromRGBA(CARD32 *pixel, CARD16 red, CARD16 green, CARD16 blue, CARD16 alpha, PictFormatPtr pFormat) { int rbits, bbits, gbits, abits; int rshift, bshift, gshift, ashift; *pixel = 0; if (!PICT_FORMAT_COLOR(pFormat->format) && PICT_FORMAT_TYPE(pFormat->format) != PICT_TYPE_A) return FALSE; rbits = PICT_FORMAT_R(pFormat->format); gbits = PICT_FORMAT_G(pFormat->format); bbits = PICT_FORMAT_B(pFormat->format); abits = PICT_FORMAT_A(pFormat->format); rshift = pFormat->direct.red; gshift = pFormat->direct.green; bshift = pFormat->direct.blue; ashift = pFormat->direct.alpha; *pixel |= ( blue >> (16 - bbits)) << bshift; *pixel |= ( red >> (16 - rbits)) << rshift; *pixel |= (green >> (16 - gbits)) << gshift; *pixel |= (alpha >> (16 - abits)) << ashift; return TRUE; } static Bool exaGetRGBAFromPixel(CARD32 pixel, CARD16 *red, CARD16 *green, CARD16 *blue, CARD16 *alpha, PictFormatPtr pFormat, PictFormatShort format) { int rbits, bbits, gbits, abits; int rshift, bshift, gshift, ashift; if (!PICT_FORMAT_COLOR(format) && PICT_FORMAT_TYPE(format) != PICT_TYPE_A) return FALSE; rbits = PICT_FORMAT_R(format); gbits = PICT_FORMAT_G(format); bbits = PICT_FORMAT_B(format); abits = PICT_FORMAT_A(format); if (pFormat) { rshift = pFormat->direct.red; gshift = pFormat->direct.green; bshift = pFormat->direct.blue; ashift = pFormat->direct.alpha; } else if (format == PICT_a8r8g8b8) { rshift = 16; gshift = 8; bshift = 0; ashift = 24; } else FatalError("EXA bug: exaGetRGBAFromPixel() doesn't match " "createSourcePicture()\n"); if (rbits) { *red = ((pixel >> rshift ) & ((1 << rbits) - 1)) << (16 - rbits); while (rbits < 16) { *red |= *red >> rbits; rbits <<= 1; } *green = ((pixel >> gshift ) & ((1 << gbits) - 1)) << (16 - gbits); while (gbits < 16) { *green |= *green >> gbits; gbits <<= 1; } *blue = ((pixel >> bshift ) & ((1 << bbits) - 1)) << (16 - bbits); while (bbits < 16) { *blue |= *blue >> bbits; bbits <<= 1; } } else { *red = 0x0000; *green = 0x0000; *blue = 0x0000; } if (abits) { *alpha = ((pixel >> ashift ) & ((1 << abits) - 1)) << (16 - abits); while (abits < 16) { *alpha |= *alpha >> abits; abits <<= 1; } } else *alpha = 0xffff; return TRUE; } static int exaTryDriverSolidFill(PicturePtr pSrc, PicturePtr pDst, INT16 xSrc, INT16 ySrc, INT16 xDst, INT16 yDst, CARD16 width, CARD16 height) { ExaScreenPriv (pDst->pDrawable->pScreen); RegionRec region; BoxPtr pbox; int nbox; int dst_off_x, dst_off_y; PixmapPtr pSrcPix, pDstPix; ExaPixmapPrivPtr pDstExaPix; CARD32 pixel; CARD16 red, green, blue, alpha; pDstPix = exaGetDrawablePixmap (pDst->pDrawable); pDstExaPix = ExaGetPixmapPriv(pDstPix); /* Check whether the accelerator can use the destination pixmap. */ if (pDstExaPix->accel_blocked) { return -1; } xDst += pDst->pDrawable->x; yDst += pDst->pDrawable->y; if (pSrc->pDrawable) { xSrc += pSrc->pDrawable->x; ySrc += pSrc->pDrawable->y; } if (!miComputeCompositeRegion (®ion, pSrc, NULL, pDst, xSrc, ySrc, 0, 0, xDst, yDst, width, height)) return 1; exaGetDrawableDeltas (pDst->pDrawable, pDstPix, &dst_off_x, &dst_off_y); REGION_TRANSLATE(pScreen, ®ion, dst_off_x, dst_off_y); if (pSrc->pDrawable) { pSrcPix = exaGetDrawablePixmap (pSrc->pDrawable); pixel = exaGetPixmapFirstPixel (pSrcPix); } else pixel = pSrc->pSourcePict->solidFill.color; if (!exaGetRGBAFromPixel(pixel, &red, &green, &blue, &alpha, pSrc->pFormat, pSrc->format) || !exaGetPixelFromRGBA(&pixel, red, green, blue, alpha, pDst->pFormat)) { REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); return -1; } if (pExaScr->do_migration) { ExaMigrationRec pixmaps[1]; pixmaps[0].as_dst = TRUE; pixmaps[0].as_src = FALSE; pixmaps[0].pPix = pDstPix; pixmaps[0].pReg = ®ion; exaDoMigration(pixmaps, 1, TRUE); } if (!exaPixmapHasGpuCopy(pDstPix)) { REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); return 0; } if (!(*pExaScr->info->PrepareSolid) (pDstPix, GXcopy, 0xffffffff, pixel)) { REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); return -1; } nbox = REGION_NUM_RECTS(®ion); pbox = REGION_RECTS(®ion); while (nbox--) { (*pExaScr->info->Solid) (pDstPix, pbox->x1, pbox->y1, pbox->x2, pbox->y2); pbox++; } (*pExaScr->info->DoneSolid) (pDstPix); exaMarkSync(pDst->pDrawable->pScreen); REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); return 1; } static int exaTryDriverCompositeRects(CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst, int nrect, ExaCompositeRectPtr rects) { ExaScreenPriv (pDst->pDrawable->pScreen); int src_off_x = 0, src_off_y = 0, mask_off_x = 0, mask_off_y = 0; int dst_off_x, dst_off_y; PixmapPtr pSrcPix = NULL, pMaskPix = NULL, pDstPix; ExaPixmapPrivPtr pSrcExaPix = NULL, pMaskExaPix = NULL, pDstExaPix; if (!pExaScr->info->PrepareComposite) return -1; if (pSrc->pDrawable) { pSrcPix = exaGetDrawablePixmap(pSrc->pDrawable); pSrcExaPix = ExaGetPixmapPriv(pSrcPix); } if (pMask && pMask->pDrawable) { pMaskPix = exaGetDrawablePixmap(pMask->pDrawable); pMaskExaPix = ExaGetPixmapPriv(pMaskPix); } pDstPix = exaGetDrawablePixmap(pDst->pDrawable); pDstExaPix = ExaGetPixmapPriv(pDstPix); /* Check whether the accelerator can use these pixmaps. * FIXME: If it cannot, use temporary pixmaps so that the drawing * happens within limits. */ if (pDstExaPix->accel_blocked || (pSrcExaPix && pSrcExaPix->accel_blocked) || (pMaskExaPix && pMaskExaPix->accel_blocked)) { return -1; } if (pExaScr->info->CheckComposite && !(*pExaScr->info->CheckComposite) (op, pSrc, pMask, pDst)) { return -1; } if (pExaScr->do_migration) { ExaMigrationRec pixmaps[3]; int i = 0; pixmaps[i].as_dst = TRUE; pixmaps[i].as_src = exaOpReadsDestination(op); pixmaps[i].pPix = pDstPix; pixmaps[i].pReg = NULL; i++; if (pSrcPix) { pixmaps[i].as_dst = FALSE; pixmaps[i].as_src = TRUE; pixmaps[i].pPix = pSrcPix; pixmaps[i].pReg = NULL; i++; } if (pMaskPix) { pixmaps[i].as_dst = FALSE; pixmaps[i].as_src = TRUE; pixmaps[i].pPix = pMaskPix; pixmaps[i].pReg = NULL; i++; } exaDoMigration(pixmaps, i, TRUE); } pDstPix = exaGetOffscreenPixmap (pDst->pDrawable, &dst_off_x, &dst_off_y); if (!pDstPix) return 0; if (pSrcPix) { pSrcPix = exaGetOffscreenPixmap (pSrc->pDrawable, &src_off_x, &src_off_y); if (!pSrcPix) return 0; } if (pMaskPix) { pMaskPix = exaGetOffscreenPixmap (pMask->pDrawable, &mask_off_x, &mask_off_y); if (!pMaskPix) return 0; } if (!(*pExaScr->info->PrepareComposite) (op, pSrc, pMask, pDst, pSrcPix, pMaskPix, pDstPix)) return -1; while (nrect--) { INT16 xDst = rects->xDst + pDst->pDrawable->x; INT16 yDst = rects->yDst + pDst->pDrawable->y; INT16 xMask = rects->xMask; INT16 yMask = rects->yMask; INT16 xSrc = rects->xSrc; INT16 ySrc = rects->ySrc; RegionRec region; BoxPtr pbox; int nbox; if (pMaskPix) { xMask += pMask->pDrawable->x; yMask += pMask->pDrawable->y; } if (pSrcPix) { xSrc += pSrc->pDrawable->x; ySrc += pSrc->pDrawable->y; } if (!miComputeCompositeRegion (®ion, pSrc, pMask, pDst, xSrc, ySrc, xMask, yMask, xDst, yDst, rects->width, rects->height)) goto next_rect; REGION_TRANSLATE(pScreen, ®ion, dst_off_x, dst_off_y); nbox = REGION_NUM_RECTS(®ion); pbox = REGION_RECTS(®ion); xMask = xMask + mask_off_x - xDst - dst_off_x; yMask = yMask + mask_off_y - yDst - dst_off_y; xSrc = xSrc + src_off_x - xDst - dst_off_x; ySrc = ySrc + src_off_y - yDst - dst_off_y; while (nbox--) { (*pExaScr->info->Composite) (pDstPix, pbox->x1 + xSrc, pbox->y1 + ySrc, pbox->x1 + xMask, pbox->y1 + yMask, pbox->x1, pbox->y1, pbox->x2 - pbox->x1, pbox->y2 - pbox->y1); pbox++; } next_rect: REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); rects++; } (*pExaScr->info->DoneComposite) (pDstPix); exaMarkSync(pDst->pDrawable->pScreen); return 1; } /** * Copy a number of rectangles from source to destination in a single * operation. This is specialized for glyph rendering: we don't have the * special-case fallbacks found in exaComposite() - if the driver can support * it, we use the driver functionality, otherwise we fall back straight to * software. */ void exaCompositeRects(CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst, int nrect, ExaCompositeRectPtr rects) { ExaScreenPriv (pDst->pDrawable->pScreen); int n; ExaCompositeRectPtr r; int ret; /* If we get a mask, that means we're rendering to the exaGlyphs * destination directly, so the damage layer takes care of this. */ if (!pMask) { RegionRec region; int x1 = MAXSHORT; int y1 = MAXSHORT; int x2 = MINSHORT; int y2 = MINSHORT; BoxRec box; /* We have to manage the damage ourselves, since CompositeRects isn't * something in the screen that can be managed by the damage extension, * and EXA depends on damage to track what needs to be migrated between * the gpu and the cpu. */ /* Compute the overall extents of the composited region - we're making * the assumption here that we are compositing a bunch of glyphs that * cluster closely together and damaging each glyph individually would * be a loss compared to damaging the bounding box. */ n = nrect; r = rects; while (n--) { int rect_x2 = r->xDst + r->width; int rect_y2 = r->yDst + r->height; if (r->xDst < x1) x1 = r->xDst; if (r->yDst < y1) y1 = r->yDst; if (rect_x2 > x2) x2 = rect_x2; if (rect_y2 > y2) y2 = rect_y2; r++; } if (x2 <= x1 || y2 <= y1) return; box.x1 = x1; box.x2 = x2 < MAXSHORT ? x2 : MAXSHORT; box.y1 = y1; box.y2 = y2 < MAXSHORT ? y2 : MAXSHORT; /* The pixmap migration code relies on pendingDamage indicating * the bounds of the current rendering, so we need to force * the actual damage into that region before we do anything, and * (see use of DamagePendingRegion in exaCopyDirty) */ REGION_INIT(pScreen, ®ion, &box, 1); DamageRegionAppend(pDst->pDrawable, ®ion); REGION_UNINIT(pScreen, ®ion); } /************************************************************/ ValidatePicture (pSrc); if (pMask) ValidatePicture (pMask); ValidatePicture (pDst); ret = exaTryDriverCompositeRects(op, pSrc, pMask, pDst, nrect, rects); if (ret != 1) { if (ret == -1 && op == PictOpOver && pMask && pMask->componentAlpha && (!pExaScr->info->CheckComposite || ((*pExaScr->info->CheckComposite)(PictOpOutReverse, pSrc, pMask, pDst) && (*pExaScr->info->CheckComposite)(PictOpAdd, pSrc, pMask, pDst)))) { ret = exaTryDriverCompositeRects(PictOpOutReverse, pSrc, pMask, pDst, nrect, rects); if (ret == 1) { op = PictOpAdd; ret = exaTryDriverCompositeRects(op, pSrc, pMask, pDst, nrect, rects); } } if (ret != 1) { n = nrect; r = rects; while (n--) { ExaCheckComposite (op, pSrc, pMask, pDst, r->xSrc, r->ySrc, r->xMask, r->yMask, r->xDst, r->yDst, r->width, r->height); r++; } } } /************************************************************/ if (!pMask) { /* Now we have to flush the damage out from pendingDamage => damage * Calling DamageRegionProcessPending has that effect. */ DamageRegionProcessPending(pDst->pDrawable); } } static int exaTryDriverComposite(CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst, INT16 xSrc, INT16 ySrc, INT16 xMask, INT16 yMask, INT16 xDst, INT16 yDst, CARD16 width, CARD16 height) { ExaScreenPriv (pDst->pDrawable->pScreen); RegionRec region; BoxPtr pbox; int nbox; int src_off_x, src_off_y, mask_off_x, mask_off_y, dst_off_x, dst_off_y; PixmapPtr pSrcPix = NULL, pMaskPix = NULL, pDstPix; ExaPixmapPrivPtr pSrcExaPix = NULL, pMaskExaPix = NULL, pDstExaPix; if (pSrc->pDrawable) { pSrcPix = exaGetDrawablePixmap(pSrc->pDrawable); pSrcExaPix = ExaGetPixmapPriv(pSrcPix); } pDstPix = exaGetDrawablePixmap(pDst->pDrawable); pDstExaPix = ExaGetPixmapPriv(pDstPix); if (pMask && pMask->pDrawable) { pMaskPix = exaGetDrawablePixmap(pMask->pDrawable); pMaskExaPix = ExaGetPixmapPriv(pMaskPix); } /* Check whether the accelerator can use these pixmaps. * FIXME: If it cannot, use temporary pixmaps so that the drawing * happens within limits. */ if (pDstExaPix->accel_blocked || (pSrcExaPix && pSrcExaPix->accel_blocked) || (pMaskExaPix && (pMaskExaPix->accel_blocked))) { return -1; } xDst += pDst->pDrawable->x; yDst += pDst->pDrawable->y; if (pMaskPix) { xMask += pMask->pDrawable->x; yMask += pMask->pDrawable->y; } if (pSrcPix) { xSrc += pSrc->pDrawable->x; ySrc += pSrc->pDrawable->y; } if (pExaScr->info->CheckComposite && !(*pExaScr->info->CheckComposite) (op, pSrc, pMask, pDst)) { return -1; } if (!miComputeCompositeRegion (®ion, pSrc, pMask, pDst, xSrc, ySrc, xMask, yMask, xDst, yDst, width, height)) return 1; exaGetDrawableDeltas (pDst->pDrawable, pDstPix, &dst_off_x, &dst_off_y); REGION_TRANSLATE(pScreen, ®ion, dst_off_x, dst_off_y); if (pExaScr->do_migration) { ExaMigrationRec pixmaps[3]; int i = 0; pixmaps[i].as_dst = TRUE; pixmaps[i].as_src = exaOpReadsDestination(op); pixmaps[i].pPix = pDstPix; pixmaps[i].pReg = pixmaps[0].as_src ? NULL : ®ion; i++; if (pSrcPix) { pixmaps[i].as_dst = FALSE; pixmaps[i].as_src = TRUE; pixmaps[i].pPix = pSrcPix; pixmaps[i].pReg = NULL; i++; } if (pMaskPix) { pixmaps[i].as_dst = FALSE; pixmaps[i].as_src = TRUE; pixmaps[i].pPix = pMaskPix; pixmaps[i].pReg = NULL; i++; } exaDoMigration(pixmaps, i, TRUE); } if (pSrcPix) { pSrcPix = exaGetOffscreenPixmap (pSrc->pDrawable, &src_off_x, &src_off_y); if (!pSrcPix) { REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); return 0; } } if (pMaskPix) { pMaskPix = exaGetOffscreenPixmap (pMask->pDrawable, &mask_off_x, &mask_off_y); if (!pMaskPix) { REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); return 0; } } if (!exaPixmapHasGpuCopy(pDstPix)) { REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); return 0; } if (!(*pExaScr->info->PrepareComposite) (op, pSrc, pMask, pDst, pSrcPix, pMaskPix, pDstPix)) { REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); return -1; } nbox = REGION_NUM_RECTS(®ion); pbox = REGION_RECTS(®ion); xMask = xMask + mask_off_x - xDst - dst_off_x; yMask = yMask + mask_off_y - yDst - dst_off_y; xSrc = xSrc + src_off_x - xDst - dst_off_x; ySrc = ySrc + src_off_y - yDst - dst_off_y; while (nbox--) { (*pExaScr->info->Composite) (pDstPix, pbox->x1 + xSrc, pbox->y1 + ySrc, pbox->x1 + xMask, pbox->y1 + yMask, pbox->x1, pbox->y1, pbox->x2 - pbox->x1, pbox->y2 - pbox->y1); pbox++; } (*pExaScr->info->DoneComposite) (pDstPix); exaMarkSync(pDst->pDrawable->pScreen); REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); return 1; } /** * exaTryMagicTwoPassCompositeHelper implements PictOpOver using two passes of * simpler operations PictOpOutReverse and PictOpAdd. Mainly used for component * alpha and limited 1-tmu cards. * * From http://anholt.livejournal.com/32058.html: * * The trouble is that component-alpha rendering requires two different sources * for blending: one for the source value to the blender, which is the * per-channel multiplication of source and mask, and one for the source alpha * for multiplying with the destination channels, which is the multiplication * of the source channels by the mask alpha. So the equation for Over is: * * dst.A = src.A * mask.A + (1 - (src.A * mask.A)) * dst.A * dst.R = src.R * mask.R + (1 - (src.A * mask.R)) * dst.R * dst.G = src.G * mask.G + (1 - (src.A * mask.G)) * dst.G * dst.B = src.B * mask.B + (1 - (src.A * mask.B)) * dst.B * * But we can do some simpler operations, right? How about PictOpOutReverse, * which has a source factor of 0 and dest factor of (1 - source alpha). We * can get the source alpha value (srca.X = src.A * mask.X) out of the texture * blenders pretty easily. So we can do a component-alpha OutReverse, which * gets us: * * dst.A = 0 + (1 - (src.A * mask.A)) * dst.A * dst.R = 0 + (1 - (src.A * mask.R)) * dst.R * dst.G = 0 + (1 - (src.A * mask.G)) * dst.G * dst.B = 0 + (1 - (src.A * mask.B)) * dst.B * * OK. And if an op doesn't use the source alpha value for the destination * factor, then we can do the channel multiplication in the texture blenders * to get the source value, and ignore the source alpha that we wouldn't use. * We've supported this in the Radeon driver for a long time. An example would * be PictOpAdd, which does: * * dst.A = src.A * mask.A + dst.A * dst.R = src.R * mask.R + dst.R * dst.G = src.G * mask.G + dst.G * dst.B = src.B * mask.B + dst.B * * Hey, this looks good! If we do a PictOpOutReverse and then a PictOpAdd right * after it, we get: * * dst.A = src.A * mask.A + ((1 - (src.A * mask.A)) * dst.A) * dst.R = src.R * mask.R + ((1 - (src.A * mask.R)) * dst.R) * dst.G = src.G * mask.G + ((1 - (src.A * mask.G)) * dst.G) * dst.B = src.B * mask.B + ((1 - (src.A * mask.B)) * dst.B) */ static int exaTryMagicTwoPassCompositeHelper(CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst, INT16 xSrc, INT16 ySrc, INT16 xMask, INT16 yMask, INT16 xDst, INT16 yDst, CARD16 width, CARD16 height) { ExaScreenPriv (pDst->pDrawable->pScreen); assert(op == PictOpOver); if (pExaScr->info->CheckComposite && (!(*pExaScr->info->CheckComposite)(PictOpOutReverse, pSrc, pMask, pDst) || !(*pExaScr->info->CheckComposite)(PictOpAdd, pSrc, pMask, pDst))) { return -1; } /* Now, we think we should be able to accelerate this operation. First, * composite the destination to be the destination times the source alpha * factors. */ exaComposite(PictOpOutReverse, pSrc, pMask, pDst, xSrc, ySrc, xMask, yMask, xDst, yDst, width, height); /* Then, add in the source value times the destination alpha factors (1.0). */ exaComposite(PictOpAdd, pSrc, pMask, pDst, xSrc, ySrc, xMask, yMask, xDst, yDst, width, height); return 1; } void exaComposite(CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst, INT16 xSrc, INT16 ySrc, INT16 xMask, INT16 yMask, INT16 xDst, INT16 yDst, CARD16 width, CARD16 height) { ExaScreenPriv (pDst->pDrawable->pScreen); int ret = -1; Bool saveSrcRepeat = pSrc->repeat; Bool saveMaskRepeat = pMask ? pMask->repeat : 0; RegionRec region; if (pExaScr->swappedOut) goto fallback; /* Remove repeat in source if useless */ if (pSrc->pDrawable && pSrc->repeat && !pSrc->transform && xSrc >= 0 && (xSrc + width) <= pSrc->pDrawable->width && ySrc >= 0 && (ySrc + height) <= pSrc->pDrawable->height) pSrc->repeat = 0; if (!pMask && !pSrc->alphaMap && !pDst->alphaMap && (op == PictOpSrc || (op == PictOpOver && !PICT_FORMAT_A(pSrc->format)))) { if (pSrc->pDrawable ? (pSrc->pDrawable->width == 1 && pSrc->pDrawable->height == 1 && pSrc->repeat) : (pSrc->pSourcePict->type == SourcePictTypeSolidFill)) { ret = exaTryDriverSolidFill(pSrc, pDst, xSrc, ySrc, xDst, yDst, width, height); if (ret == 1) goto done; } else if (pSrc->pDrawable && !pSrc->transform && ((op == PictOpSrc && (pSrc->format == pDst->format || (PICT_FORMAT_COLOR(pDst->format) && PICT_FORMAT_COLOR(pSrc->format) && pDst->format == PICT_FORMAT(PICT_FORMAT_BPP(pSrc->format), PICT_FORMAT_TYPE(pSrc->format), 0, PICT_FORMAT_R(pSrc->format), PICT_FORMAT_G(pSrc->format), PICT_FORMAT_B(pSrc->format))))) || (op == PictOpOver && pSrc->format == pDst->format && !PICT_FORMAT_A(pSrc->format)))) { if (!pSrc->repeat && xSrc >= 0 && ySrc >= 0 && (xSrc + width <= pSrc->pDrawable->width) && (ySrc + height <= pSrc->pDrawable->height)) { Bool ret; xDst += pDst->pDrawable->x; yDst += pDst->pDrawable->y; xSrc += pSrc->pDrawable->x; ySrc += pSrc->pDrawable->y; if (!miComputeCompositeRegion (®ion, pSrc, pMask, pDst, xSrc, ySrc, xMask, yMask, xDst, yDst, width, height)) goto done; ret = exaHWCopyNtoN(pSrc->pDrawable, pDst->pDrawable, NULL, REGION_RECTS(®ion), REGION_NUM_RECTS(®ion), xSrc - xDst, ySrc - yDst, FALSE, FALSE); REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); /* Reset values to their original values. */ xDst -= pDst->pDrawable->x; yDst -= pDst->pDrawable->y; xSrc -= pSrc->pDrawable->x; ySrc -= pSrc->pDrawable->y; if (!ret) goto fallback; goto done; } if (pSrc->repeat && pSrc->repeatType == RepeatNormal && pSrc->pDrawable->type == DRAWABLE_PIXMAP) { DDXPointRec patOrg; /* Let's see if the driver can do the repeat in one go */ if (pExaScr->info->PrepareComposite && !pSrc->alphaMap && !pDst->alphaMap) { ret = exaTryDriverComposite(op, pSrc, pMask, pDst, xSrc, ySrc, xMask, yMask, xDst, yDst, width, height); if (ret == 1) goto done; } /* Now see if we can use exaFillRegionTiled() */ xDst += pDst->pDrawable->x; yDst += pDst->pDrawable->y; xSrc += pSrc->pDrawable->x; ySrc += pSrc->pDrawable->y; if (!miComputeCompositeRegion (®ion, pSrc, pMask, pDst, xSrc, ySrc, xMask, yMask, xDst, yDst, width, height)) goto done; /* pattern origin is the point in the destination drawable * corresponding to (0,0) in the source */ patOrg.x = xDst - xSrc; patOrg.y = yDst - ySrc; ret = exaFillRegionTiled(pDst->pDrawable, ®ion, (PixmapPtr)pSrc->pDrawable, &patOrg, FB_ALLONES, GXcopy, CT_NONE); REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); if (ret) goto done; /* Let's be correct and restore the variables to their original state. */ xDst -= pDst->pDrawable->x; yDst -= pDst->pDrawable->y; xSrc -= pSrc->pDrawable->x; ySrc -= pSrc->pDrawable->y; } } } /* Remove repeat in mask if useless */ if (pMask && pMask->pDrawable && pMask->repeat && !pMask->transform && xMask >= 0 && (xMask + width) <= pMask->pDrawable->width && yMask >= 0 && (yMask + height) <= pMask->pDrawable->height) pMask->repeat = 0; if (pExaScr->info->PrepareComposite && !pSrc->alphaMap && (!pMask || !pMask->alphaMap) && !pDst->alphaMap) { Bool isSrcSolid; ret = exaTryDriverComposite(op, pSrc, pMask, pDst, xSrc, ySrc, xMask, yMask, xDst, yDst, width, height); if (ret == 1) goto done; /* For generic masks and solid src pictures, mach64 can do Over in two * passes, similar to the component-alpha case. */ isSrcSolid = pSrc->pDrawable ? (pSrc->pDrawable->width == 1 && pSrc->pDrawable->height == 1 && pSrc->repeat) : (pSrc->pSourcePict->type == SourcePictTypeSolidFill); /* If we couldn't do the Composite in a single pass, and it was a * component-alpha Over, see if we can do it in two passes with * an OutReverse and then an Add. */ if (ret == -1 && op == PictOpOver && pMask && (pMask->componentAlpha || isSrcSolid)) { ret = exaTryMagicTwoPassCompositeHelper(op, pSrc, pMask, pDst, xSrc, ySrc, xMask, yMask, xDst, yDst, width, height); if (ret == 1) goto done; } } fallback: #if DEBUG_TRACE_FALL exaPrintCompositeFallback (op, pSrc, pMask, pDst); #endif ExaCheckComposite (op, pSrc, pMask, pDst, xSrc, ySrc, xMask, yMask, xDst, yDst, width, height); done: pSrc->repeat = saveSrcRepeat; if (pMask) pMask->repeat = saveMaskRepeat; } #endif /** * Same as miCreateAlphaPicture, except it uses ExaCheckPolyFillRect instead * of PolyFillRect to initialize the pixmap after creating it, to prevent * the pixmap from being migrated. * * See the comments about exaTrapezoids and exaTriangles. */ static PicturePtr exaCreateAlphaPicture (ScreenPtr pScreen, PicturePtr pDst, PictFormatPtr pPictFormat, CARD16 width, CARD16 height) { PixmapPtr pPixmap; PicturePtr pPicture; GCPtr pGC; int error; xRectangle rect; if (width > 32767 || height > 32767) return 0; if (!pPictFormat) { if (pDst->polyEdge == PolyEdgeSharp) pPictFormat = PictureMatchFormat (pScreen, 1, PICT_a1); else pPictFormat = PictureMatchFormat (pScreen, 8, PICT_a8); if (!pPictFormat) return 0; } pPixmap = (*pScreen->CreatePixmap) (pScreen, width, height, pPictFormat->depth, 0); if (!pPixmap) return 0; pGC = GetScratchGC (pPixmap->drawable.depth, pScreen); if (!pGC) { (*pScreen->DestroyPixmap) (pPixmap); return 0; } ValidateGC (&pPixmap->drawable, pGC); rect.x = 0; rect.y = 0; rect.width = width; rect.height = height; ExaCheckPolyFillRect (&pPixmap->drawable, pGC, 1, &rect); exaPixmapDirty (pPixmap, 0, 0, width, height); FreeScratchGC (pGC); pPicture = CreatePicture (0, &pPixmap->drawable, pPictFormat, 0, 0, serverClient, &error); (*pScreen->DestroyPixmap) (pPixmap); return pPicture; } /** * exaTrapezoids is essentially a copy of miTrapezoids that uses * exaCreateAlphaPicture instead of miCreateAlphaPicture. * * The problem with miCreateAlphaPicture is that it calls PolyFillRect * to initialize the contents after creating the pixmap, which * causes the pixmap to be moved in for acceleration. The subsequent * call to RasterizeTrapezoid won't be accelerated however, which * forces the pixmap to be moved out again. * * exaCreateAlphaPicture avoids this roundtrip by using ExaCheckPolyFillRect * to initialize the contents. */ void exaTrapezoids (CARD8 op, PicturePtr pSrc, PicturePtr pDst, PictFormatPtr maskFormat, INT16 xSrc, INT16 ySrc, int ntrap, xTrapezoid *traps) { ScreenPtr pScreen = pDst->pDrawable->pScreen; PictureScreenPtr ps = GetPictureScreen(pScreen); BoxRec bounds; if (maskFormat) { PicturePtr pPicture; INT16 xDst, yDst; INT16 xRel, yRel; miTrapezoidBounds (ntrap, traps, &bounds); if (bounds.y1 >= bounds.y2 || bounds.x1 >= bounds.x2) return; xDst = traps[0].left.p1.x >> 16; yDst = traps[0].left.p1.y >> 16; pPicture = exaCreateAlphaPicture (pScreen, pDst, maskFormat, bounds.x2 - bounds.x1, bounds.y2 - bounds.y1); if (!pPicture) return; exaPrepareAccess(pPicture->pDrawable, EXA_PREPARE_DEST); for (; ntrap; ntrap--, traps++) (*ps->RasterizeTrapezoid) (pPicture, traps, -bounds.x1, -bounds.y1); exaFinishAccess(pPicture->pDrawable, EXA_PREPARE_DEST); xRel = bounds.x1 + xSrc - xDst; yRel = bounds.y1 + ySrc - yDst; CompositePicture (op, pSrc, pPicture, pDst, xRel, yRel, 0, 0, bounds.x1, bounds.y1, bounds.x2 - bounds.x1, bounds.y2 - bounds.y1); FreePicture (pPicture, 0); } else { if (pDst->polyEdge == PolyEdgeSharp) maskFormat = PictureMatchFormat (pScreen, 1, PICT_a1); else maskFormat = PictureMatchFormat (pScreen, 8, PICT_a8); for (; ntrap; ntrap--, traps++) exaTrapezoids (op, pSrc, pDst, maskFormat, xSrc, ySrc, 1, traps); } } /** * exaTriangles is essentially a copy of miTriangles that uses * exaCreateAlphaPicture instead of miCreateAlphaPicture. * * The problem with miCreateAlphaPicture is that it calls PolyFillRect * to initialize the contents after creating the pixmap, which * causes the pixmap to be moved in for acceleration. The subsequent * call to AddTriangles won't be accelerated however, which forces the pixmap * to be moved out again. * * exaCreateAlphaPicture avoids this roundtrip by using ExaCheckPolyFillRect * to initialize the contents. */ void exaTriangles (CARD8 op, PicturePtr pSrc, PicturePtr pDst, PictFormatPtr maskFormat, INT16 xSrc, INT16 ySrc, int ntri, xTriangle *tris) { ScreenPtr pScreen = pDst->pDrawable->pScreen; PictureScreenPtr ps = GetPictureScreen(pScreen); BoxRec bounds; if (maskFormat) { PicturePtr pPicture; INT16 xDst, yDst; INT16 xRel, yRel; miTriangleBounds (ntri, tris, &bounds); if (bounds.y1 >= bounds.y2 || bounds.x1 >= bounds.x2) return; xDst = tris[0].p1.x >> 16; yDst = tris[0].p1.y >> 16; pPicture = exaCreateAlphaPicture (pScreen, pDst, maskFormat, bounds.x2 - bounds.x1, bounds.y2 - bounds.y1); if (!pPicture) return; exaPrepareAccess(pPicture->pDrawable, EXA_PREPARE_DEST); (*ps->AddTriangles) (pPicture, -bounds.x1, -bounds.y1, ntri, tris); exaFinishAccess(pPicture->pDrawable, EXA_PREPARE_DEST); xRel = bounds.x1 + xSrc - xDst; yRel = bounds.y1 + ySrc - yDst; CompositePicture (op, pSrc, pPicture, pDst, xRel, yRel, 0, 0, bounds.x1, bounds.y1, bounds.x2 - bounds.x1, bounds.y2 - bounds.y1); FreePicture (pPicture, 0); } else { if (pDst->polyEdge == PolyEdgeSharp) maskFormat = PictureMatchFormat (pScreen, 1, PICT_a1); else maskFormat = PictureMatchFormat (pScreen, 8, PICT_a8); for (; ntri; ntri--, tris++) exaTriangles (op, pSrc, pDst, maskFormat, xSrc, ySrc, 1, tris); } }