diff options
Diffstat (limited to 'uxa/uxa-render.c')
| -rw-r--r-- | uxa/uxa-render.c | 1015 |
1 files changed, 1015 insertions, 0 deletions
diff --git a/uxa/uxa-render.c b/uxa/uxa-render.c new file mode 100644 index 00000000..94e18a55 --- /dev/null +++ b/uxa/uxa-render.c @@ -0,0 +1,1015 @@ +/* + * 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 "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); + } +} |