frederik
/
xserver
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
xserver/render/mipict.c

590 lines
19 KiB
C
Raw Blame History

/*
*
* Copyright © 1999 Keith Packard
*
* 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 "scrnintstr.h"
#include "gcstruct.h"
#include "pixmapstr.h"
#include "windowstr.h"
#include "mi.h"
#include "picturestr.h"
#include "mipict.h"
int
miCreatePicture(PicturePtr pPicture)
{
return Success;
}
void
miDestroyPicture(PicturePtr pPicture)
{
if (pPicture->freeCompClip)
RegionDestroy(pPicture->pCompositeClip);
}
static void
miDestroyPictureClip(PicturePtr pPicture)
{
if (pPicture->clientClip)
RegionDestroy(pPicture->clientClip);
pPicture->clientClip = NULL;
}
static int
miChangePictureClip(PicturePtr pPicture, int type, void *value, int n)
{
ScreenPtr pScreen = pPicture->pDrawable->pScreen;
PictureScreenPtr ps = GetPictureScreen(pScreen);
RegionPtr clientClip;
switch (type) {
case CT_PIXMAP:
/* convert the pixmap to a region */
clientClip = BitmapToRegion(pScreen, (PixmapPtr) value);
if (!clientClip)
return BadAlloc;
(*pScreen->DestroyPixmap) ((PixmapPtr) value);
break;
case CT_REGION:
clientClip = value;
break;
case CT_NONE:
clientClip = 0;
break;
default:
clientClip = RegionFromRects(n, (xRectangle *) value, type);
if (!clientClip)
return BadAlloc;
free(value);
break;
}
(*ps->DestroyPictureClip) (pPicture);
pPicture->clientClip = clientClip;
pPicture->stateChanges |= CPClipMask;
return Success;
}
static void
miChangePicture(PicturePtr pPicture, Mask mask)
{
return;
}
static void
miValidatePicture(PicturePtr pPicture, Mask mask)
{
DrawablePtr pDrawable = pPicture->pDrawable;
if ((mask & (CPClipXOrigin | CPClipYOrigin | CPClipMask | CPSubwindowMode))
|| (pDrawable->serialNumber !=
(pPicture->serialNumber & DRAWABLE_SERIAL_BITS))) {
if (pDrawable->type == DRAWABLE_WINDOW) {
WindowPtr pWin = (WindowPtr) pDrawable;
RegionPtr pregWin;
Bool freeTmpClip, freeCompClip;
if (pPicture->subWindowMode == IncludeInferiors) {
pregWin = NotClippedByChildren(pWin);
freeTmpClip = TRUE;
}
else {
pregWin = &pWin->clipList;
freeTmpClip = FALSE;
}
freeCompClip = pPicture->freeCompClip;
/*
* if there is no client clip, we can get by with just keeping the
* pointer we got, and remembering whether or not should destroy
* (or maybe re-use) it later. this way, we avoid unnecessary
* copying of regions. (this wins especially if many clients clip
* by children and have no client clip.)
*/
if (!pPicture->clientClip) {
if (freeCompClip)
RegionDestroy(pPicture->pCompositeClip);
pPicture->pCompositeClip = pregWin;
pPicture->freeCompClip = freeTmpClip;
}
else {
/*
* we need one 'real' region to put into the composite clip. if
* pregWin the current composite clip are real, we can get rid of
* one. if pregWin is real and the current composite clip isn't,
* use pregWin for the composite clip. if the current composite
* clip is real and pregWin isn't, use the current composite
* clip. if neither is real, create a new region.
*/
RegionTranslate(pPicture->clientClip,
pDrawable->x + pPicture->clipOrigin.x,
pDrawable->y + pPicture->clipOrigin.y);
if (freeCompClip) {
RegionIntersect(pPicture->pCompositeClip,
pregWin, pPicture->clientClip);
if (freeTmpClip)
RegionDestroy(pregWin);
}
else if (freeTmpClip) {
RegionIntersect(pregWin, pregWin, pPicture->clientClip);
pPicture->pCompositeClip = pregWin;
}
else {
pPicture->pCompositeClip = RegionCreate(NullBox, 0);
RegionIntersect(pPicture->pCompositeClip,
pregWin, pPicture->clientClip);
}
pPicture->freeCompClip = TRUE;
RegionTranslate(pPicture->clientClip,
-(pDrawable->x + pPicture->clipOrigin.x),
-(pDrawable->y + pPicture->clipOrigin.y));
}
} /* end of composite clip for a window */
else {
BoxRec pixbounds;
/* XXX should we translate by drawable.x/y here ? */
/* If you want pixmaps in offscreen memory, yes */
pixbounds.x1 = pDrawable->x;
pixbounds.y1 = pDrawable->y;
pixbounds.x2 = pDrawable->x + pDrawable->width;
pixbounds.y2 = pDrawable->y + pDrawable->height;
if (pPicture->freeCompClip) {
RegionReset(pPicture->pCompositeClip, &pixbounds);
}
else {
pPicture->freeCompClip = TRUE;
pPicture->pCompositeClip = RegionCreate(&pixbounds, 1);
}
if (pPicture->clientClip) {
if (pDrawable->x || pDrawable->y) {
RegionTranslate(pPicture->clientClip,
pDrawable->x + pPicture->clipOrigin.x,
pDrawable->y + pPicture->clipOrigin.y);
RegionIntersect(pPicture->pCompositeClip,
pPicture->pCompositeClip,
pPicture->clientClip);
RegionTranslate(pPicture->clientClip,
-(pDrawable->x + pPicture->clipOrigin.x),
-(pDrawable->y + pPicture->clipOrigin.y));
}
else {
RegionTranslate(pPicture->pCompositeClip,
-pPicture->clipOrigin.x,
-pPicture->clipOrigin.y);
RegionIntersect(pPicture->pCompositeClip,
pPicture->pCompositeClip,
pPicture->clientClip);
RegionTranslate(pPicture->pCompositeClip,
pPicture->clipOrigin.x,
pPicture->clipOrigin.y);
}
}
} /* end of composite clip for pixmap */
}
}
static int
miChangePictureTransform(PicturePtr pPicture, PictTransform * transform)
{
return Success;
}
static int
miChangePictureFilter(PicturePtr pPicture,
int filter, xFixed * params, int nparams)
{
return Success;
}
#define BOUND(v) (INT16) ((v) < MINSHORT ? MINSHORT : (v) > MAXSHORT ? MAXSHORT : (v))
static inline pixman_bool_t
miClipPictureReg(pixman_region16_t * pRegion,
pixman_region16_t * pClip, int dx, int dy)
{
if (pixman_region_n_rects(pRegion) == 1 &&
pixman_region_n_rects(pClip) == 1) {
pixman_box16_t *pRbox = pixman_region_rectangles(pRegion, NULL);
pixman_box16_t *pCbox = pixman_region_rectangles(pClip, NULL);
int v;
if (pRbox->x1 < (v = pCbox->x1 + dx))
pRbox->x1 = BOUND(v);
if (pRbox->x2 > (v = pCbox->x2 + dx))
pRbox->x2 = BOUND(v);
if (pRbox->y1 < (v = pCbox->y1 + dy))
pRbox->y1 = BOUND(v);
if (pRbox->y2 > (v = pCbox->y2 + dy))
pRbox->y2 = BOUND(v);
if (pRbox->x1 >= pRbox->x2 || pRbox->y1 >= pRbox->y2) {
pixman_region_init(pRegion);
}
}
else if (!pixman_region_not_empty(pClip))
return FALSE;
else {
if (dx || dy)
pixman_region_translate(pRegion, -dx, -dy);
if (!pixman_region_intersect(pRegion, pRegion, pClip))
return FALSE;
if (dx || dy)
pixman_region_translate(pRegion, dx, dy);
}
return pixman_region_not_empty(pRegion);
}
static inline Bool
miClipPictureSrc(RegionPtr pRegion, PicturePtr pPicture, int dx, int dy)
{
if (pPicture->clientClip) {
Bool result;
pixman_region_translate(pPicture->clientClip,
pPicture->clipOrigin.x + dx,
pPicture->clipOrigin.y + dy);
result = RegionIntersect(pRegion, pRegion, pPicture->clientClip);
pixman_region_translate(pPicture->clientClip,
-(pPicture->clipOrigin.x + dx),
-(pPicture->clipOrigin.y + dy));
if (!result)
return FALSE;
}
return TRUE;
}
static void
SourceValidateOnePicture(PicturePtr pPicture)
{
DrawablePtr pDrawable = pPicture->pDrawable;
ScreenPtr pScreen;
if (!pDrawable)
return;
pScreen = pDrawable->pScreen;
if (pScreen->SourceValidate) {
pScreen->SourceValidate(pDrawable, 0, 0, pDrawable->width,
pDrawable->height, pPicture->subWindowMode);
}
}
void
miCompositeSourceValidate(PicturePtr pPicture)
{
SourceValidateOnePicture(pPicture);
if (pPicture->alphaMap)
SourceValidateOnePicture(pPicture->alphaMap);
}
/*
* returns FALSE if the final region is empty. Indistinguishable from
* an allocation failure, but rendering ignores those anyways.
*/
Bool
miComputeCompositeRegion(RegionPtr pRegion,
PicturePtr pSrc,
PicturePtr pMask,
PicturePtr pDst,
INT16 xSrc,
INT16 ySrc,
INT16 xMask,
INT16 yMask,
INT16 xDst, INT16 yDst, CARD16 width, CARD16 height)
{
int v;
pRegion->extents.x1 = xDst;
v = xDst + width;
pRegion->extents.x2 = BOUND(v);
pRegion->extents.y1 = yDst;
v = yDst + height;
pRegion->extents.y2 = BOUND(v);
pRegion->data = 0;
/* Check for empty operation */
if (pRegion->extents.x1 >= pRegion->extents.x2 ||
pRegion->extents.y1 >= pRegion->extents.y2) {
pixman_region_init(pRegion);
return FALSE;
}
/* clip against dst */
if (!miClipPictureReg(pRegion, pDst->pCompositeClip, 0, 0)) {
pixman_region_fini(pRegion);
return FALSE;
}
if (pDst->alphaMap) {
if (!miClipPictureReg(pRegion, pDst->alphaMap->pCompositeClip,
-pDst->alphaOrigin.x, -pDst->alphaOrigin.y)) {
pixman_region_fini(pRegion);
return FALSE;
}
}
/* clip against src */
if (!miClipPictureSrc(pRegion, pSrc, xDst - xSrc, yDst - ySrc)) {
pixman_region_fini(pRegion);
return FALSE;
}
if (pSrc->alphaMap) {
if (!miClipPictureSrc(pRegion, pSrc->alphaMap,
xDst - (xSrc - pSrc->alphaOrigin.x),
yDst - (ySrc - pSrc->alphaOrigin.y))) {
pixman_region_fini(pRegion);
return FALSE;
}
}
/* clip against mask */
if (pMask) {
if (!miClipPictureSrc(pRegion, pMask, xDst - xMask, yDst - yMask)) {
pixman_region_fini(pRegion);
return FALSE;
}
if (pMask->alphaMap) {
if (!miClipPictureSrc(pRegion, pMask->alphaMap,
xDst - (xMask - pMask->alphaOrigin.x),
yDst - (yMask - pMask->alphaOrigin.y))) {
pixman_region_fini(pRegion);
return FALSE;
}
}
}
miCompositeSourceValidate(pSrc);
if (pMask)
miCompositeSourceValidate(pMask);
return TRUE;
}
void
miRenderColorToPixel(PictFormatPtr format, xRenderColor * color, CARD32 *pixel)
{
CARD32 r, g, b, a;
miIndexedPtr pIndexed;
switch (format->type) {
case PictTypeDirect:
r = color->red >> (16 - Ones(format->direct.redMask));
g = color->green >> (16 - Ones(format->direct.greenMask));
b = color->blue >> (16 - Ones(format->direct.blueMask));
a = color->alpha >> (16 - Ones(format->direct.alphaMask));
r = r << format->direct.red;
g = g << format->direct.green;
b = b << format->direct.blue;
a = a << format->direct.alpha;
*pixel = r | g | b | a;
break;
case PictTypeIndexed:
pIndexed = (miIndexedPtr) (format->index.devPrivate);
if (pIndexed->color) {
r = color->red >> 11;
g = color->green >> 11;
b = color->blue >> 11;
*pixel = miIndexToEnt15(pIndexed, (r << 10) | (g << 5) | b);
}
else {
r = color->red >> 8;
g = color->green >> 8;
b = color->blue >> 8;
*pixel = miIndexToEntY24(pIndexed, (r << 16) | (g << 8) | b);
}
break;
}
}
static CARD16
miFillColor(CARD32 pixel, int bits)
{
while (bits < 16) {
pixel |= pixel << bits;
bits <<= 1;
}
return (CARD16) pixel;
}
Bool
miIsSolidAlpha(PicturePtr pSrc)
{
ScreenPtr pScreen;
char line[1];
if (!pSrc->pDrawable)
return FALSE;
pScreen = pSrc->pDrawable->pScreen;
/* Alpha-only */
if (PICT_FORMAT_TYPE(pSrc->format) != PICT_TYPE_A)
return FALSE;
/* repeat */
if (!pSrc->repeat)
return FALSE;
/* 1x1 */
if (pSrc->pDrawable->width != 1 || pSrc->pDrawable->height != 1)
return FALSE;
line[0] = 1;
(*pScreen->GetImage) (pSrc->pDrawable, 0, 0, 1, 1, ZPixmap, ~0L, line);
switch (pSrc->pDrawable->bitsPerPixel) {
case 1:
return (CARD8) line[0] == 1 || (CARD8) line[0] == 0x80;
case 4:
return (CARD8) line[0] == 0xf || (CARD8) line[0] == 0xf0;
case 8:
return (CARD8) line[0] == 0xff;
default:
return FALSE;
}
}
void
miRenderPixelToColor(PictFormatPtr format, CARD32 pixel, xRenderColor * color)
{
CARD32 r, g, b, a;
miIndexedPtr pIndexed;
switch (format->type) {
case PictTypeDirect:
r = (pixel >> format->direct.red) & format->direct.redMask;
g = (pixel >> format->direct.green) & format->direct.greenMask;
b = (pixel >> format->direct.blue) & format->direct.blueMask;
a = (pixel >> format->direct.alpha) & format->direct.alphaMask;
color->red = miFillColor(r, Ones(format->direct.redMask));
color->green = miFillColor(g, Ones(format->direct.greenMask));
color->blue = miFillColor(b, Ones(format->direct.blueMask));
color->alpha = miFillColor(a, Ones(format->direct.alphaMask));
break;
case PictTypeIndexed:
pIndexed = (miIndexedPtr) (format->index.devPrivate);
pixel = pIndexed->rgba[pixel & (MI_MAX_INDEXED - 1)];
r = (pixel >> 16) & 0xff;
g = (pixel >> 8) & 0xff;
b = (pixel) & 0xff;
color->red = miFillColor(r, 8);
color->green = miFillColor(g, 8);
color->blue = miFillColor(b, 8);
color->alpha = 0xffff;
break;
}
}
static void
miTriStrip(CARD8 op,
PicturePtr pSrc,
PicturePtr pDst,
PictFormatPtr maskFormat,
INT16 xSrc, INT16 ySrc, int npoints, xPointFixed * points)
{
xTriangle *tris, *tri;
int ntri;
ntri = npoints - 2;
tris = xallocarray(ntri, sizeof(xTriangle));
if (!tris)
return;
for (tri = tris; npoints >= 3; npoints--, points++, tri++) {
tri->p1 = points[0];
tri->p2 = points[1];
tri->p3 = points[2];
}
CompositeTriangles(op, pSrc, pDst, maskFormat, xSrc, ySrc, ntri, tris);
free(tris);
}
static void
miTriFan(CARD8 op,
PicturePtr pSrc,
PicturePtr pDst,
PictFormatPtr maskFormat,
INT16 xSrc, INT16 ySrc, int npoints, xPointFixed * points)
{
xTriangle *tris, *tri;
xPointFixed *first;
int ntri;
ntri = npoints - 2;
tris = xallocarray(ntri, sizeof(xTriangle));
if (!tris)
return;
first = points++;
for (tri = tris; npoints >= 3; npoints--, points++, tri++) {
tri->p1 = *first;
tri->p2 = points[0];
tri->p3 = points[1];
}
CompositeTriangles(op, pSrc, pDst, maskFormat, xSrc, ySrc, ntri, tris);
free(tris);
}
Bool
miPictureInit(ScreenPtr pScreen, PictFormatPtr formats, int nformats)
{
PictureScreenPtr ps;
if (!PictureInit(pScreen, formats, nformats))
return FALSE;
ps = GetPictureScreen(pScreen);
ps->CreatePicture = miCreatePicture;
ps->DestroyPicture = miDestroyPicture;
ps->ChangePictureClip = miChangePictureClip;
ps->DestroyPictureClip = miDestroyPictureClip;
ps->ChangePicture = miChangePicture;
ps->ValidatePicture = miValidatePicture;
ps->InitIndexed = miInitIndexed;
ps->CloseIndexed = miCloseIndexed;
ps->UpdateIndexed = miUpdateIndexed;
ps->ChangePictureTransform = miChangePictureTransform;
ps->ChangePictureFilter = miChangePictureFilter;
ps->RealizeGlyph = miRealizeGlyph;
ps->UnrealizeGlyph = miUnrealizeGlyph;
/* MI rendering routines */
ps->Composite = 0; /* requires DDX support */
ps->Glyphs = miGlyphs;
ps->CompositeRects = miCompositeRects;
ps->Trapezoids = 0;
ps->Triangles = 0;
ps->RasterizeTrapezoid = 0; /* requires DDX support */
ps->AddTraps = 0; /* requires DDX support */
ps->AddTriangles = 0; /* requires DDX support */
ps->TriStrip = miTriStrip; /* converts call to CompositeTriangles */
ps->TriFan = miTriFan;
return TRUE;
}
Reference in New Issue View Git Blame Copy Permalink