Remove xgloffscreen.c
This commit is contained in:
David Reveman
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/*
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* Copyright © 2004 David Reveman
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*
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* Permission to use, copy, modify, distribute, and sell this software
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* and its documentation for any purpose is hereby granted without
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* fee, provided that the above copyright notice appear in all copies
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* and that both that copyright notice and this permission notice
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* appear in supporting documentation, and that the name of
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* David Reveman not be used in advertising or publicity pertaining to
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* distribution of the software without specific, written prior permission.
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* David Reveman makes no representations about the suitability of this
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* software for any purpose. It is provided "as is" without express or
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* implied warranty.
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*
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* DAVID REVEMAN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
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* NO EVENT SHALL DAVID REVEMAN BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
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* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
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* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Author: David Reveman <davidr@novell.com>
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*/
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#include "xgl.h"
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static glitz_drawable_buffer_t _buffers[] = {
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GLITZ_DRAWABLE_BUFFER_BACK_COLOR,
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GLITZ_DRAWABLE_BUFFER_FRONT_COLOR
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};
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#define MAX_OFFSCREEN_LEVEL 8
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static Bool
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xglOffscreenCreate (xglAreaPtr pArea)
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{
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return TRUE;
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}
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static Bool
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xglOffscreenMoveIn (xglAreaPtr pArea,
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pointer closure)
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{
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xglOffscreenPtr pOffscreen = (xglOffscreenPtr) pArea->pRoot->closure;
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PixmapPtr pPixmap = (PixmapPtr) closure;
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XGL_PIXMAP_PRIV (pPixmap);
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if (!xglSyncSurface (&pPixmap->drawable))
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FatalError (XGL_SW_FAILURE_STRING);
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pPixmapPriv->pArea = pArea;
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pPixmapPriv->target = xglPixmapTargetIn;
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glitz_surface_attach (pPixmapPriv->surface,
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pOffscreen->drawable, pOffscreen->buffer,
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pArea->x, pArea->y);
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XGL_INCREMENT_PIXMAP_SCORE (pPixmapPriv, 100);
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return TRUE;
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}
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static void
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xglOffscreenMoveOut (xglAreaPtr pArea,
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pointer closure)
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{
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PixmapPtr pPixmap = (PixmapPtr) closure;
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XGL_PIXMAP_PRIV (pPixmap);
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glitz_surface_detach (pPixmapPriv->surface);
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pPixmapPriv->pArea = NULL;
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pPixmapPriv->target = xglPixmapTargetOut;
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}
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static int
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xglOffscreenCompareScore (xglAreaPtr pArea,
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pointer closure1,
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pointer closure2)
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{
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int s1, s2;
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XGL_PIXMAP_PRIV ((PixmapPtr) closure1);
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s1 = pPixmapPriv->score;
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s2 = XGL_GET_PIXMAP_PRIV ((PixmapPtr) closure2)->score;
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if (s1 > s2)
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XGL_DECREMENT_PIXMAP_SCORE (pPixmapPriv, 10);
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if (pPixmapPriv->lock)
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return 1;
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return s1 - s2;
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}
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static const xglAreaFuncsRec xglOffscreenAreaFuncs = {
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xglOffscreenCreate,
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xglOffscreenMoveIn,
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xglOffscreenMoveOut,
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xglOffscreenCompareScore
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};
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Bool
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xglInitOffscreen (ScreenPtr pScreen,
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xglScreenInfoPtr pScreenInfo)
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{
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xglOffscreenPtr pOffscreen;
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glitz_drawable_format_t *format;
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XGL_SCREEN_PRIV (pScreen);
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pOffscreen = pScreenPriv->pOffscreen;
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pScreenPriv->nOffscreen = 0;
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format = glitz_drawable_get_format (pScreenPriv->drawable);
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/*
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* Use back buffer as offscreen area.
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*/
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if (format->doublebuffer)
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{
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pOffscreen->drawable = pScreenPriv->drawable;
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pOffscreen->format = format;
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pOffscreen->buffer = GLITZ_DRAWABLE_BUFFER_BACK_COLOR;
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if (xglRootAreaInit (&pOffscreen->rootArea,
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MAX_OFFSCREEN_LEVEL,
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pScreenInfo->width,
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pScreenInfo->height, 0,
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(xglAreaFuncsPtr) &xglOffscreenAreaFuncs,
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(pointer) pOffscreen))
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{
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glitz_drawable_reference (pOffscreen->drawable);
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pScreenPriv->nOffscreen++;
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pOffscreen++;
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ErrorF ("Initialized %dx%d back buffer offscreen area\n",
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pScreenInfo->width, pScreenInfo->height);
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}
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}
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if (nxglPbufferVisuals)
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{
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glitz_drawable_t *pbuffer;
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unsigned int width, height;
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int i;
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for (i = 0; i < nxglPbufferVisuals; i++)
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{
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/*
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* This can be a bit tricky. I've noticed that when some OpenGL
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* drivers can't create an accelerated pbuffer of the size we're
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* requesting they create a software one with the correct
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* size, but that's not what we want. So if your OpenGL driver
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* supports accelerated pbuffers but offscreen drawing is really
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* slow, try decrementing these values.
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*/
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width = 2048;
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height = 2048;
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do {
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pbuffer =
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glitz_create_pbuffer_drawable (pScreenPriv->drawable,
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xglPbufferVisuals[i].format,
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width, height);
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width >>= 1;
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height >>= 1;
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} while (!pbuffer && width);
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if (pbuffer)
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{
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int j = 0;
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width = glitz_drawable_get_width (pbuffer);
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height = glitz_drawable_get_height (pbuffer);
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/*
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* No back buffer? only add front buffer.
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*/
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if (!xglPbufferVisuals[i].format->doublebuffer)
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j++;
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while (j < 2)
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{
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pOffscreen->drawable = pbuffer;
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pOffscreen->format = xglPbufferVisuals[i].format;
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pOffscreen->buffer = _buffers[j];
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if (xglRootAreaInit (&pOffscreen->rootArea,
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MAX_OFFSCREEN_LEVEL,
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width, height, 0,
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(xglAreaFuncsPtr)
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&xglOffscreenAreaFuncs,
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(pointer) pOffscreen))
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{
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glitz_drawable_reference (pbuffer);
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pScreenPriv->nOffscreen++;
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pOffscreen++;
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ErrorF ("Initialized %dx%d pbuffer offscreen area\n",
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width, height);
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}
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j++;
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}
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glitz_drawable_destroy (pbuffer);
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}
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}
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}
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return TRUE;
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}
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void
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xglFiniOffscreen (ScreenPtr pScreen)
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{
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int n;
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XGL_SCREEN_PRIV (pScreen);
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n = pScreenPriv->nOffscreen;
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while (n--)
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{
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xglRootAreaFini (&pScreenPriv->pOffscreen[n].rootArea);
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glitz_drawable_destroy (pScreenPriv->pOffscreen[n].drawable);
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}
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pScreenPriv->nOffscreen = 0;
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}
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Bool
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xglFindOffscreenArea (ScreenPtr pScreen,
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PixmapPtr pPixmap)
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{
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xglOffscreenPtr pOffscreen;
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int nOffscreen;
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glitz_color_format_t *pColor;
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XGL_SCREEN_PRIV (pScreen);
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XGL_PIXMAP_PRIV (pPixmap);
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if (pPixmapPriv->score < 0)
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return FALSE;
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pColor = &pPixmapPriv->format->color;
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pOffscreen = pScreenPriv->pOffscreen;
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nOffscreen = pScreenPriv->nOffscreen;
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while (nOffscreen--)
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{
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if (pOffscreen->format->color.red_size >= pColor->red_size &&
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pOffscreen->format->color.green_size >= pColor->green_size &&
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pOffscreen->format->color.blue_size >= pColor->blue_size &&
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pOffscreen->format->color.alpha_size >= pColor->alpha_size)
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{
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/* Find available area */
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if (xglFindArea (pOffscreen->rootArea.pArea,
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pPixmap->drawable.width,
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pPixmap->drawable.height,
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FALSE,
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(pointer) pPixmap))
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return TRUE;
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/* Kicking out area with lower score */
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if (xglFindArea (pOffscreen->rootArea.pArea,
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pPixmap->drawable.width,
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pPixmap->drawable.height,
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TRUE,
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(pointer) pPixmap))
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return TRUE;
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}
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pOffscreen++;
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}
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return FALSE;
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}
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void
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xglLeaveOffscreenArea (PixmapPtr pPixmap)
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{
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XGL_PIXMAP_PRIV (pPixmap);
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if (pPixmapPriv->pArea)
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xglLeaveArea (pPixmapPriv->pArea);
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pPixmapPriv->pArea = NULL;
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}
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