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-rw-r--r--xorg-server/fb/fbpict.c471
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+/*
+ *
+ * Copyright © 2000 SuSE, Inc.
+ * Copyright © 2007 Red Hat, 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 SuSE not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. SuSE makes no representations about the
+ * suitability of this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ *
+ * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
+ * 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.
+ *
+ * Author: Keith Packard, SuSE, Inc.
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <string.h>
+
+#include "fb.h"
+
+#ifdef RENDER
+
+#include "picturestr.h"
+#include "mipict.h"
+#include "fbpict.h"
+
+#define mod(a,b) ((b) == 1 ? 0 : (a) >= 0 ? (a) % (b) : (b) - (-a) % (b))
+
+void
+fbWalkCompositeRegion (CARD8 op,
+ PicturePtr pSrc,
+ PicturePtr pMask,
+ PicturePtr pDst,
+ INT16 xSrc,
+ INT16 ySrc,
+ INT16 xMask,
+ INT16 yMask,
+ INT16 xDst,
+ INT16 yDst,
+ CARD16 width,
+ CARD16 height,
+ Bool srcRepeat,
+ Bool maskRepeat,
+ CompositeFunc compositeRect)
+{
+ RegionRec region;
+ int n;
+ BoxPtr pbox;
+ int w, h, w_this, h_this;
+ int x_msk, y_msk, x_src, y_src, x_dst, y_dst;
+
+ xDst += pDst->pDrawable->x;
+ yDst += pDst->pDrawable->y;
+ if (pSrc->pDrawable)
+ {
+ xSrc += pSrc->pDrawable->x;
+ ySrc += pSrc->pDrawable->y;
+ }
+ if (pMask && pMask->pDrawable)
+ {
+ xMask += pMask->pDrawable->x;
+ yMask += pMask->pDrawable->y;
+ }
+
+ if (!miComputeCompositeRegion (&region, pSrc, pMask, pDst, xSrc, ySrc,
+ xMask, yMask, xDst, yDst, width, height))
+ return;
+
+ n = REGION_NUM_RECTS (&region);
+ pbox = REGION_RECTS (&region);
+ while (n--)
+ {
+ h = pbox->y2 - pbox->y1;
+ y_src = pbox->y1 - yDst + ySrc;
+ y_msk = pbox->y1 - yDst + yMask;
+ y_dst = pbox->y1;
+ while (h)
+ {
+ h_this = h;
+ w = pbox->x2 - pbox->x1;
+ x_src = pbox->x1 - xDst + xSrc;
+ x_msk = pbox->x1 - xDst + xMask;
+ x_dst = pbox->x1;
+ if (maskRepeat)
+ {
+ y_msk = mod (y_msk - pMask->pDrawable->y, pMask->pDrawable->height);
+ if (h_this > pMask->pDrawable->height - y_msk)
+ h_this = pMask->pDrawable->height - y_msk;
+ y_msk += pMask->pDrawable->y;
+ }
+ if (srcRepeat)
+ {
+ y_src = mod (y_src - pSrc->pDrawable->y, pSrc->pDrawable->height);
+ if (h_this > pSrc->pDrawable->height - y_src)
+ h_this = pSrc->pDrawable->height - y_src;
+ y_src += pSrc->pDrawable->y;
+ }
+ while (w)
+ {
+ w_this = w;
+ if (maskRepeat)
+ {
+ x_msk = mod (x_msk - pMask->pDrawable->x, pMask->pDrawable->width);
+ if (w_this > pMask->pDrawable->width - x_msk)
+ w_this = pMask->pDrawable->width - x_msk;
+ x_msk += pMask->pDrawable->x;
+ }
+ if (srcRepeat)
+ {
+ x_src = mod (x_src - pSrc->pDrawable->x, pSrc->pDrawable->width);
+ if (w_this > pSrc->pDrawable->width - x_src)
+ w_this = pSrc->pDrawable->width - x_src;
+ x_src += pSrc->pDrawable->x;
+ }
+ (*compositeRect) (op, pSrc, pMask, pDst,
+ x_src, y_src, x_msk, y_msk, x_dst, y_dst,
+ w_this, h_this);
+ w -= w_this;
+ x_src += w_this;
+ x_msk += w_this;
+ x_dst += w_this;
+ }
+ h -= h_this;
+ y_src += h_this;
+ y_msk += h_this;
+ y_dst += h_this;
+ }
+ pbox++;
+ }
+ REGION_UNINIT (pDst->pDrawable->pScreen, &region);
+}
+
+void
+fbComposite (CARD8 op,
+ PicturePtr pSrc,
+ PicturePtr pMask,
+ PicturePtr pDst,
+ INT16 xSrc,
+ INT16 ySrc,
+ INT16 xMask,
+ INT16 yMask,
+ INT16 xDst,
+ INT16 yDst,
+ CARD16 width,
+ CARD16 height)
+{
+ pixman_image_t *src, *mask, *dest;
+
+ xDst += pDst->pDrawable->x;
+ yDst += pDst->pDrawable->y;
+ if (pSrc->pDrawable)
+ {
+ xSrc += pSrc->pDrawable->x;
+ ySrc += pSrc->pDrawable->y;
+ }
+ if (pMask && pMask->pDrawable)
+ {
+ xMask += pMask->pDrawable->x;
+ yMask += pMask->pDrawable->y;
+ }
+
+ miCompositeSourceValidate (pSrc, xSrc, ySrc, width, height);
+ if (pMask)
+ miCompositeSourceValidate (pMask, xMask, yMask, width, height);
+
+ src = image_from_pict (pSrc, TRUE);
+ mask = image_from_pict (pMask, TRUE);
+ dest = image_from_pict (pDst, TRUE);
+
+ if (src && dest && !(pMask && !mask))
+ {
+ pixman_image_composite (op, src, mask, dest,
+ xSrc, ySrc, xMask, yMask, xDst, yDst,
+ width, height);
+ }
+
+ free_pixman_pict (pSrc, src);
+ free_pixman_pict (pMask, mask);
+ free_pixman_pict (pDst, dest);
+}
+
+void
+fbCompositeGeneral (CARD8 op,
+ PicturePtr pSrc,
+ PicturePtr pMask,
+ PicturePtr pDst,
+ INT16 xSrc,
+ INT16 ySrc,
+ INT16 xMask,
+ INT16 yMask,
+ INT16 xDst,
+ INT16 yDst,
+ CARD16 width,
+ CARD16 height)
+{
+ fbComposite (op, pSrc, pMask, pDst,
+ xSrc, ySrc, xMask, yMask, xDst, yDst,
+ width, height);
+}
+
+#endif /* RENDER */
+
+static pixman_image_t *
+create_solid_fill_image (PicturePtr pict)
+{
+ PictSolidFill *solid = &pict->pSourcePict->solidFill;
+ pixman_color_t color;
+ CARD32 a, r, g, b;
+
+ a = (solid->color & 0xff000000) >> 24;
+ r = (solid->color & 0x00ff0000) >> 16;
+ g = (solid->color & 0x0000ff00) >> 8;
+ b = (solid->color & 0x000000ff) >> 0;
+
+ color.alpha = (a << 8) | a;
+ color.red = (r << 8) | r;
+ color.green = (g << 8) | g;
+ color.blue = (b << 8) | b;
+
+ return pixman_image_create_solid_fill (&color);
+}
+
+static pixman_image_t *
+create_linear_gradient_image (PictGradient *gradient)
+{
+ PictLinearGradient *linear = (PictLinearGradient *)gradient;
+ pixman_point_fixed_t p1;
+ pixman_point_fixed_t p2;
+
+ p1.x = linear->p1.x;
+ p1.y = linear->p1.y;
+ p2.x = linear->p2.x;
+ p2.y = linear->p2.y;
+
+ return pixman_image_create_linear_gradient (
+ &p1, &p2, (pixman_gradient_stop_t *)gradient->stops, gradient->nstops);
+}
+
+static pixman_image_t *
+create_radial_gradient_image (PictGradient *gradient)
+{
+ PictRadialGradient *radial = (PictRadialGradient *)gradient;
+ pixman_point_fixed_t c1;
+ pixman_point_fixed_t c2;
+
+ c1.x = radial->c1.x;
+ c1.y = radial->c1.y;
+ c2.x = radial->c2.x;
+ c2.y = radial->c2.y;
+
+ return pixman_image_create_radial_gradient (
+ &c1, &c2, radial->c1.radius,
+ radial->c2.radius,
+ (pixman_gradient_stop_t *)gradient->stops, gradient->nstops);
+}
+
+static pixman_image_t *
+create_conical_gradient_image (PictGradient *gradient)
+{
+ PictConicalGradient *conical = (PictConicalGradient *)gradient;
+ pixman_point_fixed_t center;
+
+ center.x = conical->center.x;
+ center.y = conical->center.y;
+
+ return pixman_image_create_conical_gradient (
+ &center, conical->angle, (pixman_gradient_stop_t *)gradient->stops,
+ gradient->nstops);
+}
+
+static pixman_image_t *
+create_bits_picture (PicturePtr pict,
+ Bool has_clip)
+{
+ FbBits *bits;
+ FbStride stride;
+ int bpp, xoff, yoff;
+ pixman_image_t *image;
+
+ fbGetDrawable (pict->pDrawable, bits, stride, bpp, xoff, yoff);
+
+ bits = (CARD8*)bits + yoff * stride * sizeof(FbBits) + xoff * (bpp / 8);
+
+ image = pixman_image_create_bits (
+ pict->format,
+ pict->pDrawable->width, pict->pDrawable->height,
+ (uint32_t *)bits, stride * sizeof (FbStride));
+
+
+#ifdef FB_ACCESS_WRAPPER
+#if FB_SHIFT==5
+
+ pixman_image_set_accessors (image,
+ (pixman_read_memory_func_t)wfbReadMemory,
+ (pixman_write_memory_func_t)wfbWriteMemory);
+
+#else
+
+#error The pixman library only works when FbBits is 32 bits wide
+
+#endif
+#endif
+
+ /* pCompositeClip is undefined for source pictures, so
+ * only set the clip region for pictures with drawables
+ */
+ if (has_clip)
+ {
+ if (pict->clientClipType != CT_NONE)
+ pixman_image_set_has_client_clip (image, TRUE);
+
+ pixman_image_set_clip_region (image, pict->pCompositeClip);
+ }
+
+ /* Indexed table */
+ if (pict->pFormat->index.devPrivate)
+ pixman_image_set_indexed (image, pict->pFormat->index.devPrivate);
+
+ return image;
+}
+
+static void
+set_image_properties (pixman_image_t *image, PicturePtr pict)
+{
+ pixman_repeat_t repeat;
+ pixman_filter_t filter;
+
+ if (pict->transform)
+ {
+ pixman_image_set_transform (
+ image, (pixman_transform_t *)pict->transform);
+ }
+
+ switch (pict->repeatType)
+ {
+ default:
+ case RepeatNone:
+ repeat = PIXMAN_REPEAT_NONE;
+ break;
+
+ case RepeatPad:
+ repeat = PIXMAN_REPEAT_PAD;
+ break;
+
+ case RepeatNormal:
+ repeat = PIXMAN_REPEAT_NORMAL;
+ break;
+
+ case RepeatReflect:
+ repeat = PIXMAN_REPEAT_REFLECT;
+ break;
+ }
+
+ pixman_image_set_repeat (image, repeat);
+
+ if (pict->alphaMap)
+ {
+ pixman_image_t *alpha_map = image_from_pict (pict->alphaMap, TRUE);
+
+ pixman_image_set_alpha_map (
+ image, alpha_map, pict->alphaOrigin.x, pict->alphaOrigin.y);
+
+ free_pixman_pict (pict->alphaMap, alpha_map);
+ }
+
+ pixman_image_set_component_alpha (image, pict->componentAlpha);
+
+ switch (pict->filter)
+ {
+ default:
+ case PictFilterNearest:
+ case PictFilterFast:
+ filter = PIXMAN_FILTER_NEAREST;
+ break;
+
+ case PictFilterBilinear:
+ case PictFilterGood:
+ filter = PIXMAN_FILTER_BILINEAR;
+ break;
+
+ case PictFilterConvolution:
+ filter = PIXMAN_FILTER_CONVOLUTION;
+ break;
+ }
+
+ pixman_image_set_filter (image, filter, (pixman_fixed_t *)pict->filter_params, pict->filter_nparams);
+ pixman_image_set_source_clipping (image, TRUE);
+}
+
+pixman_image_t *
+image_from_pict (PicturePtr pict,
+ Bool has_clip)
+{
+ pixman_image_t *image = NULL;
+
+ if (!pict)
+ return NULL;
+
+ if (pict->pDrawable)
+ {
+ image = create_bits_picture (pict, has_clip);
+ }
+ else if (pict->pSourcePict)
+ {
+ SourcePict *sp = pict->pSourcePict;
+
+ if (sp->type == SourcePictTypeSolidFill)
+ {
+ image = create_solid_fill_image (pict);
+ }
+ else
+ {
+ PictGradient *gradient = &pict->pSourcePict->gradient;
+
+ if (sp->type == SourcePictTypeLinear)
+ image = create_linear_gradient_image (gradient);
+ else if (sp->type == SourcePictTypeRadial)
+ image = create_radial_gradient_image (gradient);
+ else if (sp->type == SourcePictTypeConical)
+ image = create_conical_gradient_image (gradient);
+ }
+ }
+
+ if (image)
+ set_image_properties (image, pict);
+
+ return image;
+}
+
+void
+free_pixman_pict (PicturePtr pict, pixman_image_t *image)
+{
+ if (image && pixman_image_unref (image) && pict->pDrawable)
+ fbFinishAccess (pict->pDrawable);
+}
+
+Bool
+fbPictureInit (ScreenPtr pScreen, PictFormatPtr formats, int nformats)
+{
+
+#ifdef RENDER
+
+ PictureScreenPtr ps;
+
+ if (!miPictureInit (pScreen, formats, nformats))
+ return FALSE;
+ ps = GetPictureScreen(pScreen);
+ ps->Composite = fbComposite;
+ ps->Glyphs = miGlyphs;
+ ps->CompositeRects = miCompositeRects;
+ ps->RasterizeTrapezoid = fbRasterizeTrapezoid;
+ ps->AddTraps = fbAddTraps;
+ ps->AddTriangles = fbAddTriangles;
+
+#endif /* RENDER */
+
+ return TRUE;
+}