diff options
Diffstat (limited to 'xorg-server/hw/kdrive/src/kaapict.c')
| -rw-r--r-- | xorg-server/hw/kdrive/src/kaapict.c | 719 |
1 files changed, 0 insertions, 719 deletions
diff --git a/xorg-server/hw/kdrive/src/kaapict.c b/xorg-server/hw/kdrive/src/kaapict.c deleted file mode 100644 index 501b6b9c4..000000000 --- a/xorg-server/hw/kdrive/src/kaapict.c +++ /dev/null @@ -1,719 +0,0 @@ -/* - * 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_CONFIG_H -#include <kdrive-config.h> -#endif -#include "kdrive.h" -#include "kaa.h" - -#ifdef RENDER -#include "mipict.h" - -#define KAA_DEBUG_FALLBACKS 0 - -#if KAA_DEBUG_FALLBACKS -static void kaaCompositeFallbackPictDesc(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_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 = kaaGetOffscreenPixmap(pict->pDrawable, &temp, &temp) ? 's' : 'm'; - - snprintf(size, 20, "%dx%d%s", pict->pDrawable->width, - pict->pDrawable->height, pict->repeat ? - " R" : ""); - - snprintf(string, n, "0x%lx:%c fmt %s (%s)", (long)pict, loc, format, size); -} - -static void -kaaPrintCompositeFallback(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; - } - - kaaCompositeFallbackPictDesc(pSrc, srcdesc, 40); - kaaCompositeFallbackPictDesc(pMask, maskdesc, 40); - kaaCompositeFallbackPictDesc(pDst, dstdesc, 40); - - ErrorF("Composite fallback: op %s, \n" - " src %s, \n" - " mask %s, \n" - " dst %s, \n", - sop, srcdesc, maskdesc, dstdesc); -} - -static void -kaaPrintTrapezoidFallback(PicturePtr pDst) -{ - char dstdesc[40]; - - kaaCompositeFallbackPictDesc(pDst, dstdesc, 40); - - ErrorF("Trapezoid fallback: dst %s, %c/%s\n", - dstdesc, - (pDst->polyMode == PolyModePrecise) ? 'p' : 'i', - (pDst->polyEdge == PolyEdgeSharp) ? "a" : "aa"); -} -#endif - -static Bool -kaaGetPixelFromRGBA(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 -kaaGetRGBAFromPixel(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 -kaaTryDriverSolidFill(PicturePtr pSrc, - PicturePtr pDst, - INT16 xSrc, - INT16 ySrc, - INT16 xDst, - INT16 yDst, - CARD16 width, - CARD16 height) -{ - KaaScreenPriv (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; - - 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; - - if (pSrc->pDrawable->type == DRAWABLE_PIXMAP) - kaaPixmapUseMemory ((PixmapPtr) pSrc->pDrawable); - if (pDst->pDrawable->type == DRAWABLE_PIXMAP) - kaaPixmapUseScreen ((PixmapPtr) pDst->pDrawable); - - pDstPix = kaaGetOffscreenPixmap (pDst->pDrawable, &dst_off_x, &dst_off_y); - if (!pDstPix) { - REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); - return 0; - } - - if (pSrc->pDrawable->type == DRAWABLE_WINDOW) - pSrcPix = (*pSrc->pDrawable->pScreen->GetWindowPixmap)( - (WindowPtr) (pSrc->pDrawable)); - else - pSrcPix = (PixmapPtr) (pSrc->pDrawable); - - /* If source is offscreen, we need to sync the accelerator - * before accessing it. We'd prefer for it to be in memory. - */ - if (kaaPixmapIsOffscreen(pSrcPix)) { - kaaWaitSync(pDst->pDrawable->pScreen); - } - - pixel = *(CARD32 *)(pSrcPix->devPrivate.ptr); - if (!kaaGetRGBAFromPixel(pixel, &red, &green, &blue, &alpha, - pSrc->format)) - { - REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); - return -1; - } - kaaGetPixelFromRGBA(&pixel, red, green, blue, alpha, - pDst->format); - - if (!(*pKaaScr->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--) - { - (*pKaaScr->info->Solid) (pbox->x1 + dst_off_x, - pbox->y1 + dst_off_y, - pbox->x2 + dst_off_x, - pbox->y2 + dst_off_y); - pbox++; - } - - (*pKaaScr->info->DoneSolid) (); - kaaMarkSync (pDst->pDrawable->pScreen); - kaaDrawableDirty (pDst->pDrawable); - - REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); - return 1; -} - -static int -kaaTryDriverBlend(CARD8 op, - PicturePtr pSrc, - PicturePtr pDst, - INT16 xSrc, - INT16 ySrc, - INT16 xDst, - INT16 yDst, - CARD16 width, - CARD16 height) -{ - KaaScreenPriv (pDst->pDrawable->pScreen); - RegionRec region; - BoxPtr pbox; - int nbox; - int src_off_x, src_off_y, dst_off_x, dst_off_y; - PixmapPtr pSrcPix, pDstPix; - struct _Pixmap srcScratch; - - 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; - - - if (pSrc->pDrawable->type == DRAWABLE_PIXMAP) - kaaPixmapUseScreen ((PixmapPtr) pSrc->pDrawable); - if (pDst->pDrawable->type == DRAWABLE_PIXMAP) - kaaPixmapUseScreen ((PixmapPtr) pDst->pDrawable); - - pSrcPix = kaaGetOffscreenPixmap (pSrc->pDrawable, &src_off_x, &src_off_y); - pDstPix = kaaGetOffscreenPixmap (pDst->pDrawable, &dst_off_x, &dst_off_y); - - if (!pDstPix) { - REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); - return 0; - } - - if (!pSrcPix && pKaaScr->info->UploadToScratch) { - if ((*pKaaScr->info->UploadToScratch) ((PixmapPtr) pSrc->pDrawable, - &srcScratch)) - pSrcPix = &srcScratch; - } - - if (!pSrcPix) { - REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); - return 0; - } - - if (!(*pKaaScr->info->PrepareBlend) (op, pSrc, pDst, pSrcPix, - pDstPix)) - { - REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); - return -1; - } - - nbox = REGION_NUM_RECTS(®ion); - pbox = REGION_RECTS(®ion); - - xSrc -= xDst; - ySrc -= yDst; - - while (nbox--) - { - (*pKaaScr->info->Blend) (pbox->x1 + xSrc + src_off_x, - pbox->y1 + ySrc + src_off_y, - pbox->x1 + dst_off_x, - pbox->y1 + dst_off_y, - pbox->x2 - pbox->x1, - pbox->y2 - pbox->y1); - pbox++; - } - - (*pKaaScr->info->DoneBlend) (); - kaaMarkSync (pDst->pDrawable->pScreen); - kaaDrawableDirty (pDst->pDrawable); - - REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); - return 1; -} - -static int -kaaTryDriverComposite(CARD8 op, - PicturePtr pSrc, - PicturePtr pMask, - PicturePtr pDst, - INT16 xSrc, - INT16 ySrc, - INT16 xMask, - INT16 yMask, - INT16 xDst, - INT16 yDst, - CARD16 width, - CARD16 height) -{ - KaaScreenPriv (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; - struct _Pixmap scratch; - - 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 (!miComputeCompositeRegion (®ion, pSrc, pMask, pDst, - xSrc, ySrc, xMask, yMask, xDst, yDst, - width, height)) - return 1; - - if (pKaaScr->info->CheckComposite && - !(*pKaaScr->info->CheckComposite) (op, pSrc, pMask, pDst)) - { - REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); - return -1; - } - - if (pSrc->pDrawable->type == DRAWABLE_PIXMAP) - kaaPixmapUseScreen ((PixmapPtr) pSrc->pDrawable); - if (pMask && pMask->pDrawable->type == DRAWABLE_PIXMAP) - kaaPixmapUseScreen ((PixmapPtr) pMask->pDrawable); - if (pDst->pDrawable->type == DRAWABLE_PIXMAP) - kaaPixmapUseScreen ((PixmapPtr) pDst->pDrawable); - - pSrcPix = kaaGetOffscreenPixmap (pSrc->pDrawable, &src_off_x, &src_off_y); - if (pMask) - pMaskPix = kaaGetOffscreenPixmap (pMask->pDrawable, &mask_off_x, - &mask_off_y); - pDstPix = kaaGetOffscreenPixmap (pDst->pDrawable, &dst_off_x, &dst_off_y); - - if (!pDstPix) { - REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); - return 0; - } - - if (!pSrcPix && (!pMask || pMaskPix) && pKaaScr->info->UploadToScratch) { - if (pSrc->pDrawable->type == DRAWABLE_WINDOW) - pSrcPix = (*pSrc->pDrawable->pScreen->GetWindowPixmap) ( - (WindowPtr) pSrc->pDrawable); - else - pSrcPix = (PixmapPtr) pSrc->pDrawable; - if ((*pKaaScr->info->UploadToScratch) (pSrcPix, &scratch)) - pSrcPix = &scratch; - } else if (pSrcPix && pMask && !pMaskPix && pKaaScr->info->UploadToScratch) { - if (pMask->pDrawable->type == DRAWABLE_WINDOW) - pMaskPix = (*pMask->pDrawable->pScreen->GetWindowPixmap) ( - (WindowPtr) pMask->pDrawable); - else - pMaskPix = (PixmapPtr) pMask->pDrawable; - if ((*pKaaScr->info->UploadToScratch) (pMaskPix, &scratch)) - pMaskPix = &scratch; - } - - if (!pSrcPix || (pMask && !pMaskPix)) { - REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); - return 0; - } - - if (!(*pKaaScr->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 -= xDst; - yMask -= yDst; - - xSrc -= xDst; - ySrc -= yDst; - - while (nbox--) - { - (*pKaaScr->info->Composite) (pbox->x1 + xSrc + src_off_x, - pbox->y1 + ySrc + src_off_y, - pbox->x1 + xMask + mask_off_x, - pbox->y1 + yMask + mask_off_y, - pbox->x1 + dst_off_x, - pbox->y1 + dst_off_y, - pbox->x2 - pbox->x1, - pbox->y2 - pbox->y1); - pbox++; - } - - (*pKaaScr->info->DoneComposite) (); - kaaMarkSync (pDst->pDrawable->pScreen); - kaaDrawableDirty (pDst->pDrawable); - - REGION_UNINIT(pDst->pDrawable->pScreen, ®ion); - return 1; -} - - -void -kaaComposite(CARD8 op, - PicturePtr pSrc, - PicturePtr pMask, - PicturePtr pDst, - INT16 xSrc, - INT16 ySrc, - INT16 xMask, - INT16 yMask, - INT16 xDst, - INT16 yDst, - CARD16 width, - CARD16 height) -{ - KdScreenPriv (pDst->pDrawable->pScreen); - KaaScreenPriv (pDst->pDrawable->pScreen); - int ret = -1; - - if (!pMask && pSrc->pDrawable) - { - if (op == PictOpSrc) - { - if (pScreenPriv->enabled && pSrc->pDrawable && pSrc->pDrawable->width == 1 && - pSrc->pDrawable->height == 1 && pSrc->repeat) - { - ret = kaaTryDriverSolidFill(pSrc, pDst, xSrc, ySrc, xDst, yDst, - width, height); - if (ret == 1) - return; - } - else if (!pSrc->repeat && !pSrc->transform && - pSrc->format == pDst->format) - { - RegionRec region; - - 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)) - return; - - - kaaCopyNtoN (pSrc->pDrawable, pDst->pDrawable, 0, - REGION_RECTS(®ion), REGION_NUM_RECTS(®ion), - xSrc - xDst, ySrc - yDst, - FALSE, FALSE, 0, 0); - return; - } - } - - if (pScreenPriv->enabled && pKaaScr->info->PrepareBlend && - !pSrc->alphaMap && !pDst->alphaMap) - { - ret = kaaTryDriverBlend(op, pSrc, pDst, xSrc, ySrc, xDst, yDst, - width, height); - if (ret == 1) - return; - } - } - - if (pSrc->pDrawable && (!pMask || pMask->pDrawable) && - pScreenPriv->enabled && pKaaScr->info->PrepareComposite && - !pSrc->alphaMap && (!pMask || !pMask->alphaMap) && !pDst->alphaMap) - { - ret = kaaTryDriverComposite(op, pSrc, pMask, pDst, xSrc, ySrc, xMask, - yMask, xDst, yDst, width, height); - if (ret == 1) - return; - } - - if (ret != 0) { - /* failure to accelerate was not due to pixmaps being in the wrong - * locations. - */ - if (pSrc->pDrawable->type == DRAWABLE_PIXMAP) - kaaPixmapUseMemory ((PixmapPtr) pSrc->pDrawable); - if (pMask && pMask->pDrawable->type == DRAWABLE_PIXMAP) - kaaPixmapUseMemory ((PixmapPtr) pMask->pDrawable); - if (pDst->pDrawable->type == DRAWABLE_PIXMAP) - kaaPixmapUseMemory ((PixmapPtr) pDst->pDrawable); - } - -#if KAA_DEBUG_FALLBACKS - kaaPrintCompositeFallback (op, pSrc, pMask, pDst); -#endif - - KdCheckComposite (op, pSrc, pMask, pDst, xSrc, ySrc, - xMask, yMask, xDst, yDst, width, height); -} -#endif - -static xFixed -miLineFixedX (xLineFixed *l, xFixed y, Bool ceil) -{ - xFixed dx = l->p2.x - l->p1.x; - xFixed_32_32 ex = (xFixed_32_32) (y - l->p1.y) * dx; - xFixed dy = l->p2.y - l->p1.y; - if (ceil) - ex += (dy - 1); - return l->p1.x + (xFixed) (ex / dy); -} - -/* Need to decide just how much to trim, to maintain translation independence - * when converted to floating point. - */ -#define XFIXED_TO_FLOAT(x) (((float)((x) & 0xffffff00)) / 65536.0) - -/* This is just to allow us to work on the hardware side of the problem while - * waiting for cairo to get a new tesselator. We may not be able to support - * RasterizeTrapezoid at all due to the abutting edges requirement, but it might - * be technically legal if we widened the trap by some epsilon, so that alpha - * values at abutting edges were a little too big and capped at one, rather than - * a little too small and looked bad. - */ -void kaaRasterizeTrapezoid(PicturePtr pDst, - xTrapezoid *trap, - int xoff, - int yoff) -{ - KdScreenPriv (pDst->pDrawable->pScreen); - KaaScreenPriv (pDst->pDrawable->pScreen); - KaaTrapezoid ktrap; - PixmapPtr pPix; - xFixed x1, x2; - - if (!pScreenPriv->enabled || - !pKaaScr->info->PrepareTrapezoids || - pDst->pDrawable->type != DRAWABLE_PIXMAP || - pDst->alphaMap || pDst->format != PICT_a8) - { - KdCheckRasterizeTrapezoid (pDst, trap, xoff, yoff); -#if KAA_DEBUG_FALLBACKS - kaaPrintTrapezoidFallback (pDst); -#endif - return; - } - pPix = (PixmapPtr)pDst->pDrawable; - - kaaPixmapUseScreen (pPix); - - if (!kaaPixmapIsOffscreen (pPix) || - !(*pKaaScr->info->PrepareTrapezoids) (pDst, pPix)) - { -#if KAA_DEBUG_FALLBACKS - kaaPrintTrapezoidFallback (pDst); -#endif - KdCheckRasterizeTrapezoid (pDst, trap, xoff, yoff); - return; - } - - ktrap.ty = XFIXED_TO_FLOAT(trap->top) + yoff; - x1 = miLineFixedX (&trap->left, trap->top, FALSE); - x2 = miLineFixedX (&trap->right, trap->top, TRUE); - ktrap.tl = XFIXED_TO_FLOAT(x1) + xoff; - ktrap.tr = XFIXED_TO_FLOAT(x2) + xoff; - ktrap.by = XFIXED_TO_FLOAT(trap->bottom) + yoff; - x1 = miLineFixedX (&trap->left, trap->bottom, FALSE); - x2 = miLineFixedX (&trap->right, trap->bottom, TRUE); - ktrap.bl = XFIXED_TO_FLOAT(x1) + xoff; - ktrap.br = XFIXED_TO_FLOAT(x2) + xoff; - - (*pKaaScr->info->Trapezoids) (&ktrap, 1); - (*pKaaScr->info->DoneTrapezoids) (); -} - -void -kaaInitTrapOffsets(int grid_order, float *x_offsets, float *y_offsets, - float x_offset, float y_offset) -{ - int i = 0; - float x, y, x_count, y_count; - - x_count = (1 << (grid_order / 2)) + 1; - y_count = (1 << (grid_order / 2)) - 1; - - x_offset += 1.0 / x_count / 2.0; - y_offset += 1.0 / y_count / 2.0; - - for (x = 0; x < x_count; x++) { - for (y = 0; y < y_count; y++) { - x_offsets[i] = x / x_count + x_offset; - y_offsets[i] = y / y_count + y_offset; - i++; - } - } -} - |