/* * 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 #endif #include #include "uxa-priv.h" #ifdef RENDER #include "mipict.h" #if DEBUG_TRACE_FALL static void uxa_composite_fallback_pict_desc(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_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; } loc = uxa_get_drawable_pixmap(pict->pDrawable, &temp, &temp) ? 's' : 'm'; snprintf(size, 20, "%dx%d%s", pict->pDrawable->width, pict->pDrawable->height, pict->repeat ? " R" : ""); snprintf(string, n, "%p:%c fmt %s (%s)", pict->pDrawable, loc, format, size); } static void uxa_print_composite_fallback(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; } uxa_composite_fallback_pict_desc(pSrc, srcdesc, 40); uxa_composite_fallback_pict_desc(pMask, maskdesc, 40); uxa_composite_fallback_pict_desc(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 uxa_op_reads_destination (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 uxa_get_pixel_from_rgba(CARD32 *pixel, CARD16 red, CARD16 green, CARD16 blue, CARD16 alpha, CARD32 format) { int rbits, bbits, gbits, abits; int rshift, bshift, gshift, ashift; *pixel = 0; if (!PICT_FORMAT_COLOR(format)) return FALSE; rbits = PICT_FORMAT_R(format); gbits = PICT_FORMAT_G(format); bbits = PICT_FORMAT_B(format); abits = PICT_FORMAT_A(format); if (PICT_FORMAT_TYPE(format) == PICT_TYPE_ARGB) { bshift = 0; gshift = bbits; rshift = gshift + gbits; ashift = rshift + rbits; } else { /* PICT_TYPE_ABGR */ rshift = 0; gshift = rbits; bshift = gshift + gbits; ashift = bshift + bbits; } *pixel |= ( blue >> (16 - bbits)) << bshift; *pixel |= ( red >> (16 - rbits)) << rshift; *pixel |= (green >> (16 - gbits)) << gshift; *pixel |= (alpha >> (16 - abits)) << ashift; return TRUE; } static Bool uxa_get_rgba_from_pixel(CARD32 pixel, CARD16 *red, CARD16 *green, CARD16 *blue, CARD16 *alpha, CARD32 format) { int rbits, bbits, gbits, abits; int rshift, bshift, gshift, ashift; if (!PICT_FORMAT_COLOR(format)) return FALSE; rbits = PICT_FORMAT_R(format); gbits = PICT_FORMAT_G(format); bbits = PICT_FORMAT_B(format); abits = PICT_FORMAT_A(format); if (PICT_FORMAT_TYPE(format) == PICT_TYPE_ARGB) { bshift = 0; gshift = bbits; rshift = gshift + gbits; ashift = rshift + rbits; } else { /* PICT_TYPE_ABGR */ rshift = 0; gshift = rbits; bshift = gshift + gbits; ashift = bshift + bbits; } *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; } 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 uxa_try_driver_solid_fill(PicturePtr pSrc, PicturePtr pDst, INT16 xSrc, INT16 ySrc, INT16 xDst, INT16 yDst, CARD16 width, CARD16 height) { uxa_screen_t *uxa_screen = uxa_get_screen(pDst->pDrawable->pScreen); RegionRec region; BoxPtr pbox; int nbox; int dst_off_x, dst_off_y; PixmapPtr pSrcPix, pDstPix; CARD32 pixel; CARD16 red, green, blue, alpha; pDstPix = uxa_get_drawable_pixmap (pDst->pDrawable); pSrcPix = uxa_get_drawable_pixmap (pSrc->pDrawable); xDst += pDst->pDrawable->x; yDst += pDst->pDrawable->y; xSrc += pSrc->pDrawable->x; ySrc += pSrc->pDrawable->y; if (!miComputeCompositeRegion (®ion, pSrc, NULL, pDst, xSrc, ySrc, 0, 0, xDst, yDst, width, height)) return 1; uxa_get_drawable_deltas (pDst->pDrawable, pDstPix, &dst_off_x, &dst_off_y); REGION_TRANSLATE(pScreen, ®ion, dst_off_x, dst_off_y); pixel = uxa_get_pixmap_first_pixel (pSrcPix); if (!uxa_pixmap_is_offscreen(pDstPix)) { REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); return 0; } if (!uxa_get_rgba_from_pixel(pixel, &red, &green, &blue, &alpha, pSrc->format)) { REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); return -1; } if (!uxa_get_pixel_from_rgba(&pixel, red, green, blue, alpha, pDst->format)) { REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); return -1; } if (!(*uxa_screen->info->prepare_solid) (pDstPix, GXcopy, 0xffffffff, pixel)) { REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); return -1; } nbox = REGION_NUM_RECTS(®ion); pbox = REGION_RECTS(®ion); while (nbox--) { (*uxa_screen->info->solid) (pDstPix, pbox->x1, pbox->y1, pbox->x2, pbox->y2); pbox++; } (*uxa_screen->info->done_solid) (pDstPix); REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); return 1; } static int uxa_try_driver_composite_rects(CARD8 op, PicturePtr pSrc, PicturePtr pDst, int nrect, uxa_composite_rect_t *rects) { uxa_screen_t *uxa_screen = uxa_get_screen(pDst->pDrawable->pScreen); int src_off_x, src_off_y, dst_off_x, dst_off_y; PixmapPtr pSrcPix, pDstPix; if (!uxa_screen->info->prepare_composite) return -1; if (uxa_screen->info->check_composite && !(*uxa_screen->info->check_composite) (op, pSrc, NULL, pDst)) { return -1; } pDstPix = uxa_get_offscreen_pixmap(pDst->pDrawable, &dst_off_x, &dst_off_y); if (!pDstPix) return 0; pSrcPix = uxa_get_offscreen_pixmap(pSrc->pDrawable, &src_off_x, &src_off_y); if (!pSrcPix) return 0; if (!(*uxa_screen->info->prepare_composite) (op, pSrc, NULL, pDst, pSrcPix, NULL, pDstPix)) return -1; while (nrect--) { INT16 xDst = rects->xDst + pDst->pDrawable->x; INT16 yDst = rects->yDst + pDst->pDrawable->y; INT16 xSrc = rects->xSrc + pSrc->pDrawable->x; INT16 ySrc = rects->ySrc + pSrc->pDrawable->y; RegionRec region; BoxPtr pbox; int nbox; if (!miComputeCompositeRegion (®ion, pSrc, NULL, pDst, xSrc, ySrc, 0, 0, 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); xSrc = xSrc + src_off_x - xDst - dst_off_x; ySrc = ySrc + src_off_y - yDst - dst_off_y; while (nbox--) { (*uxa_screen->info->composite) (pDstPix, pbox->x1 + xSrc, pbox->y1 + ySrc, 0, 0, pbox->x1, pbox->y1, pbox->x2 - pbox->x1, pbox->y2 - pbox->y1); pbox++; } next_rect: REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); rects++; } (*uxa_screen->info->done_composite) (pDstPix); return 1; } /** * Copy a number of rectangles from source to destination in a single * operation. This is specialized for building a glyph mask: we don'y * have a mask argument because we don't need it for that, and we * don't have he special-case fallbacks found in uxa_composite() - if the * driver can support it, we use the driver functionality, otherwise we * fallback straight to software. */ void uxa_composite_rects(CARD8 op, PicturePtr pSrc, PicturePtr pDst, int nrect, uxa_composite_rect_t *rects) { int n; uxa_composite_rect_t *r; /************************************************************/ ValidatePicture (pSrc); ValidatePicture (pDst); if (uxa_try_driver_composite_rects(op, pSrc, pDst, nrect, rects) != 1) { n = nrect; r = rects; while (n--) { uxa_check_composite (op, pSrc, NULL, pDst, r->xSrc, r->ySrc, 0, 0, r->xDst, r->yDst, r->width, r->height); r++; } } /************************************************************/ } static int uxa_try_driver_composite(CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst, INT16 xSrc, INT16 ySrc, INT16 xMask, INT16 yMask, INT16 xDst, INT16 yDst, CARD16 width, CARD16 height) { uxa_screen_t *uxa_screen = uxa_get_screen(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, pMaskPix = NULL, pDstPix; xDst += pDst->pDrawable->x; yDst += pDst->pDrawable->y; if (pMask) { xMask += pMask->pDrawable->x; yMask += pMask->pDrawable->y; } xSrc += pSrc->pDrawable->x; ySrc += pSrc->pDrawable->y; if (uxa_screen->info->check_composite && !(*uxa_screen->info->check_composite) (op, pSrc, pMask, pDst)) { return -1; } if (!miComputeCompositeRegion (®ion, pSrc, pMask, pDst, xSrc, ySrc, xMask, yMask, xDst, yDst, width, height)) return 1; pDstPix = uxa_get_offscreen_pixmap (pDst->pDrawable, &dst_off_x, &dst_off_y); pSrcPix = uxa_get_offscreen_pixmap (pSrc->pDrawable, &src_off_x, &src_off_y); if (pMask) pMaskPix = uxa_get_offscreen_pixmap (pMask->pDrawable, &mask_off_x, &mask_off_y); if (!pDstPix || !pSrcPix || (pMask && !pMaskPix)) { REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); return 0; } REGION_TRANSLATE(pScreen, ®ion, dst_off_x, dst_off_y); if (!(*uxa_screen->info->prepare_composite) (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--) { (*uxa_screen->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++; } (*uxa_screen->info->done_composite) (pDstPix); REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); return 1; } /** * uxa_try_magic_two_pass_composite_helper 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 uxa_try_magic_two_pass_composite_helper(CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst, INT16 xSrc, INT16 ySrc, INT16 xMask, INT16 yMask, INT16 xDst, INT16 yDst, CARD16 width, CARD16 height) { uxa_screen_t *uxa_screen = uxa_get_screen(pDst->pDrawable->pScreen); assert(op == PictOpOver); if (uxa_screen->info->check_composite && (!(*uxa_screen->info->check_composite)(PictOpOutReverse, pSrc, pMask, pDst) || !(*uxa_screen->info->check_composite)(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. */ uxa_composite(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). */ uxa_composite(PictOpAdd, pSrc, pMask, pDst, xSrc, ySrc, xMask, yMask, xDst, yDst, width, height); return 1; } void uxa_composite(CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst, INT16 xSrc, INT16 ySrc, INT16 xMask, INT16 yMask, INT16 xDst, INT16 yDst, CARD16 width, CARD16 height) { uxa_screen_t *uxa_screen = uxa_get_screen(pDst->pDrawable->pScreen); int ret = -1; Bool saveSrcRepeat = pSrc->repeat; Bool saveMaskRepeat = pMask ? pMask->repeat : 0; RegionRec region; /* We currently don't support acceleration of gradients, or other pictures * with a NULL pDrawable. */ if (uxa_screen->swappedOut || pSrc->pDrawable == NULL || (pMask != NULL && pMask->pDrawable == NULL)) { goto fallback; } /* Remove repeat in source if useless */ if (pSrc->repeat && !pSrc->transform && xSrc >= 0 && (xSrc + width) <= pSrc->pDrawable->width && ySrc >= 0 && (ySrc + height) <= pSrc->pDrawable->height) pSrc->repeat = 0; if (!pMask) { if ((op == PictOpSrc && ((pSrc->format == pDst->format) || (pSrc->format==PICT_a8r8g8b8 && pDst->format==PICT_x8r8g8b8) || (pSrc->format==PICT_a8b8g8r8 && pDst->format==PICT_x8b8g8r8))) || (op == PictOpOver && !pSrc->alphaMap && !pDst->alphaMap && pSrc->format == pDst->format && (pSrc->format==PICT_x8r8g8b8 || pSrc->format==PICT_x8b8g8r8))) { if (pSrc->pDrawable->width == 1 && pSrc->pDrawable->height == 1 && pSrc->repeat) { ret = uxa_try_driver_solid_fill(pSrc, pDst, xSrc, ySrc, xDst, yDst, width, height); if (ret == 1) goto done; } else if (pSrc->pDrawable != NULL && !pSrc->repeat && !pSrc->transform) { 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; uxa_copy_n_to_n (pSrc->pDrawable, pDst->pDrawable, NULL, REGION_RECTS(®ion), REGION_NUM_RECTS(®ion), xSrc - xDst, ySrc - yDst, FALSE, FALSE, 0, NULL); REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); goto done; } else if (pSrc->pDrawable != NULL && pSrc->pDrawable->type == DRAWABLE_PIXMAP && !pSrc->transform && pSrc->repeatType == RepeatNormal) { DDXPointRec patOrg; /* Let's see if the driver can do the repeat in one go */ if (uxa_screen->info->prepare_composite && !pSrc->alphaMap && !pDst->alphaMap) { ret = uxa_try_driver_composite(op, pSrc, pMask, pDst, xSrc, ySrc, xMask, yMask, xDst, yDst, width, height); if (ret == 1) goto done; } /* Now see if we can use uxa_fill_region_tiled() */ 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 = uxa_fill_region_tiled(pDst->pDrawable, ®ion, (PixmapPtr)pSrc->pDrawable, &patOrg, FB_ALLONES, GXcopy); REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); if (ret) goto done; } } } /* Remove repeat in mask if useless */ if (pMask && pMask->repeat && !pMask->transform && xMask >= 0 && (xMask + width) <= pMask->pDrawable->width && yMask >= 0 && (yMask + height) <= pMask->pDrawable->height) pMask->repeat = 0; if (uxa_screen->info->prepare_composite && !pSrc->alphaMap && (!pMask || !pMask->alphaMap) && !pDst->alphaMap) { Bool isSrcSolid; ret = uxa_try_driver_composite(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->width == 1 && pSrc->pDrawable->height == 1 && pSrc->repeat; /* 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 = uxa_try_magic_two_pass_composite_helper(op, pSrc, pMask, pDst, xSrc, ySrc, xMask, yMask, xDst, yDst, width, height); if (ret == 1) goto done; } } fallback: #if DEBUG_TRACE_FALL uxa_print_composite_fallback (op, pSrc, pMask, pDst); #endif uxa_check_composite (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 uxa_check_poly_fill_rect instead * of PolyFillRect to initialize the pixmap after creating it, to prevent * the pixmap from being migrated. * * See the comments about uxa_trapezoids and uxa_triangles. */ static PicturePtr uxa_create_alpha_picture (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; uxa_check_poly_fill_rect (&pPixmap->drawable, pGC, 1, &rect); FreeScratchGC (pGC); pPicture = CreatePicture (0, &pPixmap->drawable, pPictFormat, 0, 0, serverClient, &error); (*pScreen->DestroyPixmap) (pPixmap); return pPicture; } /** * uxa_trapezoids is essentially a copy of miTrapezoids that uses * uxa_create_alpha_picture 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. * * uxa_create_alpha_picture avoids this roundtrip by using uxa_check_poly_fill_rect * to initialize the contents. */ void uxa_trapezoids (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; Bool direct = op == PictOpAdd && miIsSolidAlpha (pSrc); if (maskFormat || direct) { miTrapezoidBounds (ntrap, traps, &bounds); if (bounds.y1 >= bounds.y2 || bounds.x1 >= bounds.x2) return; } /* * Check for solid alpha add */ if (direct) { DrawablePtr pDraw = pDst->pDrawable; PixmapPtr pixmap = uxa_get_drawable_pixmap (pDraw); int xoff, yoff; uxa_get_drawable_deltas(pDraw, pixmap, &xoff, &yoff); xoff += pDraw->x; yoff += pDraw->y; uxa_prepare_access(pDraw, UXA_ACCESS_RW); for (; ntrap; ntrap--, traps++) (*ps->RasterizeTrapezoid) (pDst, traps, 0, 0); uxa_finish_access(pDraw); } else if (maskFormat) { PicturePtr pPicture; INT16 xDst, yDst; INT16 xRel, yRel; xDst = traps[0].left.p1.x >> 16; yDst = traps[0].left.p1.y >> 16; pPicture = uxa_create_alpha_picture (pScreen, pDst, maskFormat, bounds.x2 - bounds.x1, bounds.y2 - bounds.y1); if (!pPicture) return; uxa_prepare_access(pPicture->pDrawable, UXA_ACCESS_RW); for (; ntrap; ntrap--, traps++) (*ps->RasterizeTrapezoid) (pPicture, traps, -bounds.x1, -bounds.y1); uxa_finish_access(pPicture->pDrawable); 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++) uxa_trapezoids (op, pSrc, pDst, maskFormat, xSrc, ySrc, 1, traps); } } /** * uxa_triangles is essentially a copy of miTriangles that uses * uxa_create_alpha_picture 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. * * uxa_create_alpha_picture avoids this roundtrip by using uxa_check_poly_fill_rect * to initialize the contents. */ void uxa_triangles (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; Bool direct = op == PictOpAdd && miIsSolidAlpha (pSrc); if (maskFormat || direct) { miTriangleBounds (ntri, tris, &bounds); if (bounds.y1 >= bounds.y2 || bounds.x1 >= bounds.x2) return; } /* * Check for solid alpha add */ if (direct) { DrawablePtr pDraw = pDst->pDrawable; uxa_prepare_access(pDraw, UXA_ACCESS_RW); (*ps->AddTriangles) (pDst, 0, 0, ntri, tris); uxa_finish_access(pDraw); } else if (maskFormat) { PicturePtr pPicture; INT16 xDst, yDst; INT16 xRel, yRel; xDst = tris[0].p1.x >> 16; yDst = tris[0].p1.y >> 16; pPicture = uxa_create_alpha_picture (pScreen, pDst, maskFormat, bounds.x2 - bounds.x1, bounds.y2 - bounds.y1); if (!pPicture) return; uxa_prepare_access(pPicture->pDrawable, UXA_ACCESS_RW); (*ps->AddTriangles) (pPicture, -bounds.x1, -bounds.y1, ntri, tris); uxa_finish_access(pPicture->pDrawable); 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++) uxa_triangles (op, pSrc, pDst, maskFormat, xSrc, ySrc, 1, tris); } }