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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"
+
+#include "picturestr.h"
+#include "mipict.h"
+#include "fbpict.h"
+
+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;
+ int src_xoff, src_yoff;
+ int msk_xoff, msk_yoff;
+ int dst_xoff, dst_yoff;
+
+ miCompositeSourceValidate (pSrc, xSrc - xDst, ySrc - yDst, width, height);
+ if (pMask)
+ miCompositeSourceValidate (pMask, xMask - xDst, yMask - yDst, width, height);
+
+ src = image_from_pict (pSrc, FALSE, &src_xoff, &src_yoff);
+ mask = image_from_pict (pMask, FALSE, &msk_xoff, &msk_yoff);
+ dest = image_from_pict (pDst, TRUE, &dst_xoff, &dst_yoff);
+
+ if (src && dest && !(pMask && !mask))
+ {
+ pixman_image_composite (op, src, mask, dest,
+ xSrc + src_xoff, ySrc + src_yoff,
+ xMask + msk_xoff, yMask + msk_yoff,
+ xDst + dst_xoff, yDst + dst_yoff,
+ width, height);
+ }
+
+ free_pixman_pict (pSrc, src);
+ free_pixman_pict (pMask, mask);
+ free_pixman_pict (pDst, dest);
+}
+
+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,
+ int *xoff,
+ int *yoff)
+{
+ PixmapPtr pixmap;
+ FbBits *bits;
+ FbStride stride;
+ int bpp;
+ pixman_image_t *image;
+
+ fbGetDrawablePixmap (pict->pDrawable, pixmap, *xoff, *yoff);
+ fbGetPixmapBitsData(pixmap, bits, stride, bpp);
+
+ image = pixman_image_create_bits (
+ pict->format,
+ pixmap->drawable.width, pixmap->drawable.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);
+
+ if (*xoff || *yoff)
+ pixman_region_translate (pict->pCompositeClip, *xoff, *yoff);
+
+ pixman_image_set_clip_region (image, pict->pCompositeClip);
+
+ if (*xoff || *yoff)
+ pixman_region_translate (pict->pCompositeClip, -*xoff, -*yoff);
+ }
+
+ /* Indexed table */
+ if (pict->pFormat->index.devPrivate)
+ pixman_image_set_indexed (image, pict->pFormat->index.devPrivate);
+
+ /* Add in drawable origin to position within the image */
+ *xoff += pict->pDrawable->x;
+ *yoff += pict->pDrawable->y;
+
+ return image;
+}
+
+static pixman_image_t *
+image_from_pict_internal (PicturePtr pict, Bool has_clip, int *xoff, int *yoff, Bool is_alpha_map);
+
+static void
+set_image_properties (pixman_image_t *image, PicturePtr pict, Bool has_clip, int *xoff, int *yoff, Bool is_alpha_map)
+{
+ pixman_repeat_t repeat;
+ pixman_filter_t filter;
+
+ if (pict->transform)
+ {
+ /* For source images, adjust the transform to account
+ * for the drawable offset within the pixman image,
+ * then set the offset to 0 as it will be used
+ * to compute positions within the transformed image.
+ */
+ if (!has_clip) {
+ struct pixman_transform adjusted;
+
+ adjusted = *pict->transform;
+ pixman_transform_translate(&adjusted,
+ NULL,
+ pixman_int_to_fixed(*xoff),
+ pixman_int_to_fixed(*yoff));
+ pixman_image_set_transform (image, &adjusted);
+ *xoff = 0;
+ *yoff = 0;
+ } else
+ pixman_image_set_transform (image, 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);
+
+ /* Fetch alpha map unless 'pict' is being used
+ * as the alpha map for this operation
+ */
+ if (pict->alphaMap && !is_alpha_map)
+ {
+ int alpha_xoff, alpha_yoff;
+ pixman_image_t *alpha_map = image_from_pict_internal (pict->alphaMap, FALSE, &alpha_xoff, &alpha_yoff, 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);
+}
+
+static pixman_image_t *
+image_from_pict_internal (PicturePtr pict, Bool has_clip, int *xoff, int *yoff, Bool is_alpha_map)
+{
+ pixman_image_t *image = NULL;
+
+ if (!pict)
+ return NULL;
+
+ if (pict->pDrawable)
+ {
+ image = create_bits_picture (pict, has_clip, xoff, yoff);
+ }
+ 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);
+ }
+ *xoff = *yoff = 0;
+ }
+
+ if (image)
+ set_image_properties (image, pict, has_clip, xoff, yoff, is_alpha_map);
+
+ return image;
+}
+
+pixman_image_t *
+image_from_pict (PicturePtr pict, Bool has_clip, int *xoff, int *yoff)
+{
+ return image_from_pict_internal (pict, has_clip, xoff, yoff, FALSE);
+}
+
+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)
+{
+
+ 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;
+
+ return TRUE;
+}
contact: Jan Huwald // Impressum