diff options
Diffstat (limited to 'xorg-server/hw/kdrive/ephyr/ephyr_draw.c')
| -rw-r--r-- | xorg-server/hw/kdrive/ephyr/ephyr_draw.c | 524 |
1 files changed, 524 insertions, 0 deletions
diff --git a/xorg-server/hw/kdrive/ephyr/ephyr_draw.c b/xorg-server/hw/kdrive/ephyr/ephyr_draw.c new file mode 100644 index 000000000..422b7c6b6 --- /dev/null +++ b/xorg-server/hw/kdrive/ephyr/ephyr_draw.c @@ -0,0 +1,524 @@ +/* + * Copyright © 2006 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + * Authors: + * Eric Anholt <eric@anholt.net> + * + */ + +#ifdef HAVE_CONFIG_H +#include <kdrive-config.h> +#endif +#undef NDEBUG /* No, really. The whole point of this module is to crash. */ + +#include "ephyr.h" +#include "exa_priv.h" +#include "fbpict.h" + +#define EPHYR_TRACE_DRAW 0 + +#if EPHYR_TRACE_DRAW +#define TRACE_DRAW() ErrorF("%s\n", __FUNCTION__); +#else +#define TRACE_DRAW() do { } while (0) +#endif + +/* Use some oddball alignments, to expose issues in alignment handling in EXA. */ +#define EPHYR_OFFSET_ALIGN 24 +#define EPHYR_PITCH_ALIGN 24 + +#define EPHYR_OFFSCREEN_SIZE (16 * 1024 * 1024) +#define EPHYR_OFFSCREEN_BASE (1 * 1024 * 1024) + +/** + * Forces a real devPrivate.ptr for hidden pixmaps, so that we can call down to + * fb functions. + */ +static void +ephyrPreparePipelinedAccess(PixmapPtr pPix, int index) +{ + KdScreenPriv(pPix->drawable.pScreen); + KdScreenInfo *screen = pScreenPriv->screen; + EphyrScrPriv *scrpriv = screen->driver; + EphyrFakexaPriv *fakexa = scrpriv->fakexa; + + assert(fakexa->saved_ptrs[index] == NULL); + fakexa->saved_ptrs[index] = pPix->devPrivate.ptr; + + if (pPix->devPrivate.ptr != NULL) + return; + + pPix->devPrivate.ptr = fakexa->exa->memoryBase + exaGetPixmapOffset(pPix); +} + +/** + * Restores the original devPrivate.ptr of the pixmap from before we messed with + * it. + */ +static void +ephyrFinishPipelinedAccess(PixmapPtr pPix, int index) +{ + KdScreenPriv(pPix->drawable.pScreen); + KdScreenInfo *screen = pScreenPriv->screen; + EphyrScrPriv *scrpriv = screen->driver; + EphyrFakexaPriv *fakexa = scrpriv->fakexa; + + pPix->devPrivate.ptr = fakexa->saved_ptrs[index]; + fakexa->saved_ptrs[index] = NULL; +} + +/** + * Sets up a scratch GC for fbFill, and saves other parameters for the + * ephyrSolid implementation. + */ +static Bool +ephyrPrepareSolid(PixmapPtr pPix, int alu, Pixel pm, Pixel fg) +{ + ScreenPtr pScreen = pPix->drawable.pScreen; + KdScreenPriv(pScreen); + KdScreenInfo *screen = pScreenPriv->screen; + EphyrScrPriv *scrpriv = screen->driver; + EphyrFakexaPriv *fakexa = scrpriv->fakexa; + CARD32 tmpval[3]; + + ephyrPreparePipelinedAccess(pPix, EXA_PREPARE_DEST); + + fakexa->pDst = pPix; + fakexa->pGC = GetScratchGC(pPix->drawable.depth, pScreen); + + tmpval[0] = alu; + tmpval[1] = pm; + tmpval[2] = fg; + ChangeGC(fakexa->pGC, GCFunction | GCPlaneMask | GCForeground, + tmpval); + + ValidateGC(&pPix->drawable, fakexa->pGC); + + TRACE_DRAW(); + + return TRUE; +} + +/** + * Does an fbFill of the rectangle to be drawn. + */ +static void +ephyrSolid(PixmapPtr pPix, int x1, int y1, int x2, int y2) +{ + ScreenPtr pScreen = pPix->drawable.pScreen; + KdScreenPriv(pScreen); + KdScreenInfo *screen = pScreenPriv->screen; + EphyrScrPriv *scrpriv = screen->driver; + EphyrFakexaPriv *fakexa = scrpriv->fakexa; + + fbFill(&fakexa->pDst->drawable, fakexa->pGC, x1, y1, x2 - x1, y2 - y1); +} + +/** + * Cleans up the scratch GC created in ephyrPrepareSolid. + */ +static void +ephyrDoneSolid(PixmapPtr pPix) +{ + ScreenPtr pScreen = pPix->drawable.pScreen; + KdScreenPriv(pScreen); + KdScreenInfo *screen = pScreenPriv->screen; + EphyrScrPriv *scrpriv = screen->driver; + EphyrFakexaPriv *fakexa = scrpriv->fakexa; + + FreeScratchGC(fakexa->pGC); + + ephyrFinishPipelinedAccess(pPix, EXA_PREPARE_DEST); +} + +/** + * Sets up a scratch GC for fbCopyArea, and saves other parameters for the + * ephyrCopy implementation. + */ +static Bool +ephyrPrepareCopy(PixmapPtr pSrc, PixmapPtr pDst, int dx, int dy, int alu, + Pixel pm) +{ + ScreenPtr pScreen = pDst->drawable.pScreen; + KdScreenPriv(pScreen); + KdScreenInfo *screen = pScreenPriv->screen; + EphyrScrPriv *scrpriv = screen->driver; + EphyrFakexaPriv *fakexa = scrpriv->fakexa; + CARD32 tmpval[2]; + + ephyrPreparePipelinedAccess(pDst, EXA_PREPARE_DEST); + ephyrPreparePipelinedAccess(pSrc, EXA_PREPARE_SRC); + + fakexa->pSrc = pSrc; + fakexa->pDst = pDst; + fakexa->pGC = GetScratchGC(pDst->drawable.depth, pScreen); + + tmpval[0] = alu; + tmpval[1] = pm; + ChangeGC (fakexa->pGC, GCFunction | GCPlaneMask, tmpval); + + ValidateGC(&pDst->drawable, fakexa->pGC); + + TRACE_DRAW(); + + return TRUE; +} + +/** + * Does an fbCopyArea to take care of the requested copy. + */ +static void +ephyrCopy(PixmapPtr pDst, int srcX, int srcY, int dstX, int dstY, int w, int h) +{ + ScreenPtr pScreen = pDst->drawable.pScreen; + KdScreenPriv(pScreen); + KdScreenInfo *screen = pScreenPriv->screen; + EphyrScrPriv *scrpriv = screen->driver; + EphyrFakexaPriv *fakexa = scrpriv->fakexa; + + fbCopyArea(&fakexa->pSrc->drawable, &fakexa->pDst->drawable, fakexa->pGC, + srcX, srcY, w, h, dstX, dstY); +} + +/** + * Cleans up the scratch GC created in ephyrPrepareCopy. + */ +static void +ephyrDoneCopy(PixmapPtr pDst) +{ + ScreenPtr pScreen = pDst->drawable.pScreen; + KdScreenPriv(pScreen); + KdScreenInfo *screen = pScreenPriv->screen; + EphyrScrPriv *scrpriv = screen->driver; + EphyrFakexaPriv *fakexa = scrpriv->fakexa; + + FreeScratchGC (fakexa->pGC); + + ephyrFinishPipelinedAccess(fakexa->pSrc, EXA_PREPARE_SRC); + ephyrFinishPipelinedAccess(fakexa->pDst, EXA_PREPARE_DEST); +} + +/** + * Reports that we can always accelerate the given operation. This may not be + * desirable from an EXA testing standpoint -- testing the fallback paths would + * be useful, too. + */ +static Bool +ephyrCheckComposite(int op, PicturePtr pSrcPicture, PicturePtr pMaskPicture, + PicturePtr pDstPicture) +{ + /* Exercise the component alpha helper, so fail on this case like a normal + * driver + */ + if (pMaskPicture && pMaskPicture->componentAlpha && op == PictOpOver) + return FALSE; + + return TRUE; +} + +/** + * Saves off the parameters for ephyrComposite. + */ +static Bool +ephyrPrepareComposite(int op, PicturePtr pSrcPicture, PicturePtr pMaskPicture, + PicturePtr pDstPicture, PixmapPtr pSrc, PixmapPtr pMask, + PixmapPtr pDst) +{ + KdScreenPriv(pDst->drawable.pScreen); + KdScreenInfo *screen = pScreenPriv->screen; + EphyrScrPriv *scrpriv = screen->driver; + EphyrFakexaPriv *fakexa = scrpriv->fakexa; + + ephyrPreparePipelinedAccess(pDst, EXA_PREPARE_DEST); + ephyrPreparePipelinedAccess(pSrc, EXA_PREPARE_SRC); + if (pMask != NULL) + ephyrPreparePipelinedAccess(pMask, EXA_PREPARE_MASK); + + fakexa->op = op; + fakexa->pSrcPicture = pSrcPicture; + fakexa->pMaskPicture = pMaskPicture; + fakexa->pDstPicture = pDstPicture; + fakexa->pSrc = pSrc; + fakexa->pMask = pMask; + fakexa->pDst = pDst; + + TRACE_DRAW(); + + return TRUE; +} + +/** + * Does an fbComposite to complete the requested drawing operation. + */ +static void +ephyrComposite(PixmapPtr pDst, int srcX, int srcY, int maskX, int maskY, + int dstX, int dstY, int w, int h) +{ + KdScreenPriv(pDst->drawable.pScreen); + KdScreenInfo *screen = pScreenPriv->screen; + EphyrScrPriv *scrpriv = screen->driver; + EphyrFakexaPriv *fakexa = scrpriv->fakexa; + + fbComposite(fakexa->op, fakexa->pSrcPicture, fakexa->pMaskPicture, + fakexa->pDstPicture, srcX, srcY, maskX, maskY, dstX, dstY, + w, h); +} + +static void +ephyrDoneComposite(PixmapPtr pDst) +{ + KdScreenPriv(pDst->drawable.pScreen); + KdScreenInfo *screen = pScreenPriv->screen; + EphyrScrPriv *scrpriv = screen->driver; + EphyrFakexaPriv *fakexa = scrpriv->fakexa; + + if (fakexa->pMask != NULL) + ephyrFinishPipelinedAccess(fakexa->pMask, EXA_PREPARE_MASK); + ephyrFinishPipelinedAccess(fakexa->pSrc, EXA_PREPARE_SRC); + ephyrFinishPipelinedAccess(fakexa->pDst, EXA_PREPARE_DEST); +} + +/** + * Does fake acceleration of DownloadFromScren using memcpy. + */ +static Bool +ephyrDownloadFromScreen(PixmapPtr pSrc, int x, int y, int w, int h, char *dst, + int dst_pitch) +{ + KdScreenPriv(pSrc->drawable.pScreen); + KdScreenInfo *screen = pScreenPriv->screen; + EphyrScrPriv *scrpriv = screen->driver; + EphyrFakexaPriv *fakexa = scrpriv->fakexa; + unsigned char *src; + int src_pitch, cpp; + + if (pSrc->drawable.bitsPerPixel < 8) + return FALSE; + + ephyrPreparePipelinedAccess(pSrc, EXA_PREPARE_SRC); + + cpp = pSrc->drawable.bitsPerPixel / 8; + src_pitch = exaGetPixmapPitch(pSrc); + src = fakexa->exa->memoryBase + exaGetPixmapOffset(pSrc); + src += y * src_pitch + x * cpp; + + for (; h > 0; h--) { + memcpy(dst, src, w * cpp); + dst += dst_pitch; + src += src_pitch; + } + + exaMarkSync(pSrc->drawable.pScreen); + + ephyrFinishPipelinedAccess(pSrc, EXA_PREPARE_SRC); + + return TRUE; +} + +/** + * Does fake acceleration of UploadToScreen using memcpy. + */ +static Bool +ephyrUploadToScreen(PixmapPtr pDst, int x, int y, int w, int h, char *src, + int src_pitch) +{ + KdScreenPriv(pDst->drawable.pScreen); + KdScreenInfo *screen = pScreenPriv->screen; + EphyrScrPriv *scrpriv = screen->driver; + EphyrFakexaPriv *fakexa = scrpriv->fakexa; + unsigned char *dst; + int dst_pitch, cpp; + + if (pDst->drawable.bitsPerPixel < 8) + return FALSE; + + ephyrPreparePipelinedAccess(pDst, EXA_PREPARE_DEST); + + cpp = pDst->drawable.bitsPerPixel / 8; + dst_pitch = exaGetPixmapPitch(pDst); + dst = fakexa->exa->memoryBase + exaGetPixmapOffset(pDst); + dst += y * dst_pitch + x * cpp; + + for (; h > 0; h--) { + memcpy(dst, src, w * cpp); + dst += dst_pitch; + src += src_pitch; + } + + exaMarkSync(pDst->drawable.pScreen); + + ephyrFinishPipelinedAccess(pDst, EXA_PREPARE_DEST); + + return TRUE; +} + +static Bool +ephyrPrepareAccess(PixmapPtr pPix, int index) +{ + /* Make sure we don't somehow end up with a pointer that is in framebuffer + * and hasn't been readied for us. + */ + assert(pPix->devPrivate.ptr != NULL); + + return TRUE; +} + +/** + * In fakexa, we currently only track whether we have synced to the latest + * "accelerated" drawing that has happened or not. It's not used for anything + * yet. + */ +static int +ephyrMarkSync(ScreenPtr pScreen) +{ + KdScreenPriv(pScreen); + KdScreenInfo *screen = pScreenPriv->screen; + EphyrScrPriv *scrpriv = screen->driver; + EphyrFakexaPriv *fakexa = scrpriv->fakexa; + + fakexa->is_synced = FALSE; + + return 0; +} + +/** + * Assumes that we're waiting on the latest marker. When EXA gets smarter and + * starts using markers in a fine-grained way (for example, waiting on drawing + * to required pixmaps to complete, rather than waiting for all drawing to + * complete), we'll want to make the ephyrMarkSync/ephyrWaitMarker + * implementation fine-grained as well. + */ +static void +ephyrWaitMarker(ScreenPtr pScreen, int marker) +{ + KdScreenPriv(pScreen); + KdScreenInfo *screen = pScreenPriv->screen; + EphyrScrPriv *scrpriv = screen->driver; + EphyrFakexaPriv *fakexa = scrpriv->fakexa; + + fakexa->is_synced = TRUE; +} + +/** + * This function initializes EXA to use the fake acceleration implementation + * which just falls through to software. The purpose is to have a reliable, + * correct driver with which to test changes to the EXA core. + */ +Bool +ephyrDrawInit(ScreenPtr pScreen) +{ + KdScreenPriv(pScreen); + KdScreenInfo *screen = pScreenPriv->screen; + EphyrScrPriv *scrpriv = screen->driver; + EphyrFakexaPriv *fakexa; + Bool success; + + fakexa = xcalloc(1, sizeof(*fakexa)); + if (fakexa == NULL) + return FALSE; + + fakexa->exa = exaDriverAlloc(); + if (fakexa->exa == NULL) { + xfree(fakexa); + return FALSE; + } + + fakexa->exa->memoryBase = screen->memory_base; + fakexa->exa->memorySize = screen->memory_size; + fakexa->exa->offScreenBase = screen->off_screen_base; + + /* Since we statically link against EXA, we shouldn't have to be smart about + * versioning. + */ + fakexa->exa->exa_major = 2; + fakexa->exa->exa_minor = 0; + + fakexa->exa->PrepareSolid = ephyrPrepareSolid; + fakexa->exa->Solid = ephyrSolid; + fakexa->exa->DoneSolid = ephyrDoneSolid; + + fakexa->exa->PrepareCopy = ephyrPrepareCopy; + fakexa->exa->Copy = ephyrCopy; + fakexa->exa->DoneCopy = ephyrDoneCopy; + + fakexa->exa->CheckComposite = ephyrCheckComposite; + fakexa->exa->PrepareComposite = ephyrPrepareComposite; + fakexa->exa->Composite = ephyrComposite; + fakexa->exa->DoneComposite = ephyrDoneComposite; + + fakexa->exa->DownloadFromScreen = ephyrDownloadFromScreen; + fakexa->exa->UploadToScreen = ephyrUploadToScreen; + + fakexa->exa->MarkSync = ephyrMarkSync; + fakexa->exa->WaitMarker = ephyrWaitMarker; + + fakexa->exa->PrepareAccess = ephyrPrepareAccess; + + fakexa->exa->pixmapOffsetAlign = EPHYR_OFFSET_ALIGN; + fakexa->exa->pixmapPitchAlign = EPHYR_PITCH_ALIGN; + + fakexa->exa->maxX = 1023; + fakexa->exa->maxY = 1023; + + fakexa->exa->flags = EXA_OFFSCREEN_PIXMAPS; + + success = exaDriverInit(pScreen, fakexa->exa); + if (success) { + ErrorF("Initialized fake EXA acceleration\n"); + scrpriv->fakexa = fakexa; + } else { + ErrorF("Failed to initialize EXA\n"); + xfree(fakexa->exa); + xfree(fakexa); + } + + return success; +} + +void +ephyrDrawEnable(ScreenPtr pScreen) +{ +} + +void +ephyrDrawDisable(ScreenPtr pScreen) +{ +} + +void +ephyrDrawFini(ScreenPtr pScreen) +{ +} + +/** + * exaDDXDriverInit is required by the top-level EXA module, and is used by + * the xorg DDX to hook in its EnableDisableFB wrapper. We don't need it, since + * we won't be enabling/disabling the FB. + */ +void +exaDDXDriverInit(ScreenPtr pScreen) +{ + ExaScreenPriv(pScreen); + + pExaScr->migration = ExaMigrationSmart; + pExaScr->checkDirtyCorrectness = TRUE; +} |