/******************************Module*Header*******************************\ * Module Name: multi.c * * Supports multiple display boards as a single virtual desktop. * * This is implemented by presenting to GDI a single large virtual * display and adding a layer between GDI and the driver's Drv functions. * For the most part, the rest of the driver outside of multi.c doesn't * have to change much, subject to the requirements below. * * This implementation requires that each board have the same virtual * resolution and colour depth (e.g., all be running 1024x768x256), and * that the boards be arranged in a rectangular configuration. * * Each board has its own PDEV, and completely manages its surface * independently, down to glyph and bitmap caching. The Mul * routine intercepts the DDI call, and for each board dispatches * a Drv call with the appropriate PDEV and clip object modifications. * * The following support in the main driver is required: * * 1) The driver should be able to handle a per-surface offset. For * example, if two 1024x768 displays are pasted side-by-side, the * right board will get drawing operations in the range (1024, 768) - * (2048, 768). The driver has a (-1024, 0) surface offset to convert * the actual drawing on the right board to the expected (0, 0) - * (1024, 768). * * The current driver already uses this notion to support device-format * bitmaps drawn in off-screen memory. * * Another option would be to handle the surface offsets in this layer, * but then all parameters including clip objects, paths and glyph * enumerations would have to be adjusted here as well. * * 2) The main driver must be able to share realized pattern information * between board instances. That is, with the current DDI specification * GDI entirely handles brush memory allocation via pvAllocRBrush, * and the driver doesn't get notified when the brush is destroyed, so * the driver has to keep all information about the brush for all the * boards in the one brush realization. This isn't too onerous. * * Problems: * * 1) DrvSetPointerShape requires that support be consistent between all * board instances -- for example, one board instance cannot accept * a h/w cursor and the other fail it, because GDI doesn't know it would * have to simulate on one area of the screen and not the other. * * 2) CompatibleBitmaps would have to be shared between board instances. * This becomes a problem when the bitmaps are kept by the driver in off- * screen memory. * * Status: * * This code is officially untested. However, I know of no outstanding * bugs -- everything seems to just work. * * Note that I haven't addressed any initialization issues; to adapt this * code, you will need to solve some of those problems (such as proper * miniport support, and a nice method for the user to control the board * configurations and geometry). * * Disclaimer: * * This code is provided as sample code only. It is not intended to * represent Microsoft's endorsed solution for multiple screen support. * * Copyright (c) 1993-1995 Microsoft Corporation \**************************************************************************/ #include "precomp.h" #if MULTI_BOARDS // We change the active board to the home board after every drawing // operation. We do this only because the Metheus BIOS does not reset // the active board on a soft-reset, and so the initial POST text // would come up on whatever happened to be the last board drawn to. #define GO_HOME(pmdev) vSelectBoard(pmdev, pmdev->pmbHome) #define GO_BOARD(pmdev, pmb) vSelectBoard(pmdev, pmb) struct _MULTI_BOARD; typedef struct _MULTI_BOARD MULTI_BOARD; /* mb */ struct _MULTI_BOARD { LONG iHwBoard; // Hardware board number LONG iBoard; // Sequentially allocated board number RECTL rcl; // Board's coordinates MULTI_BOARD* pmbNext; // For traversing the entire list of boards MULTI_BOARD* pmbLeft; // For traversing by direction MULTI_BOARD* pmbUp; MULTI_BOARD* pmbRight; MULTI_BOARD* pmbDown; PDEV* ppdev; // Pointer to the board's PDEV SURFOBJ* pso; // Surface representing the board HSURF hsurf; // Handle to surface }; /* mb, pmb */ typedef struct _MDEV { MULTI_BOARD* pmb; // Where to start enumerating MULTI_BOARD* pmbHome; // Board used for full-screen MULTI_BOARD* pmbUpperLeft; // Board in upper-left corner MULTI_BOARD* pmbUpperRight; MULTI_BOARD* pmbLowerLeft; MULTI_BOARD* pmbLowerRight; LONG cxBoards; // Number of boards per row LONG cyBoards; // Number of boards per column LONG cBoards; // Total number of boards MULTI_BOARD* pmbPointer; // Board where cursor is currently visible MULTI_BOARD* pmbCurrent; // Currently selected board (needed for // DrvRealizeBrush) HDEV hdev; // Handle that GDI knows us by HSURF hsurf; // Handle to our virtual surface CLIPOBJ* pco; // A temporary CLIPOBJ that we can modify ULONG iBitmapFormat; // Current colour depth FLONG flHooks; // Those functions that the main driver // is hooking } MDEV; /* mdev, pmdev */ typedef struct _PVCONSUMER { PVOID pvConsumer; } PVCONSUMER; typedef struct _FONT_CONSUMER { LONG cConsumers; // Total number of boards PVCONSUMER apvc[MAX_BOARDS]; // Array of structures cConsumers in length } FONT_CONSUMER; /* fc, pfc */ typedef struct _BITBLTDATA { RECTL rclBounds; MDEV* pmdev; SURFOBJ* psoDst; SURFOBJ* psoSrc; SURFOBJ* psoMask; CLIPOBJ* pco; XLATEOBJ* pxlo; RECTL* prclDst; POINTL* pptlSrc; POINTL* pptlMask; BRUSHOBJ* pbo; POINTL* pptlBrush; ROP4 rop4; } BITBLTDATA; /* bb, pbb */ /******************************Public*Routine******************************\ * bFindBoard * * Returns in ppmb a pointer to the board containing the upper-left * corner of prcl. * * Returns TRUE if prcl is entirely containing on one board; FALSE if * prcl spans multiple boards. * \**************************************************************************/ BOOL bFindBoard(MDEV* pmdev, RECTL* prcl, MULTI_BOARD** ppmb) { MULTI_BOARD* pmb; pmb = pmdev->pmbUpperLeft; // It should never happen that GDI will give us a call whose bounds // don't intersect the virtual screen. But so that we don't crash // should it ever happen, we'll return an intersection with the first // board -- we can assume GDI at least said the clipping was non- // trivial, in which case that board's display routine will realize // nothing had to be done: *ppmb = pmb; // First find the row: while (prcl->top >= pmb->rcl.bottom) { pmb = pmb->pmbDown; if (pmb == NULL) return(FALSE); // This is a case where the bounds doesn't // intercept the virtual screen } // Now find the column: while (prcl->left >= pmb->rcl.right) { pmb = pmb->pmbRight; if (pmb == NULL) return(FALSE); // This is a case where the bounds doesn't // intercept the virtual screen } // So we found the first board: *ppmb = pmb; return(prcl->right <= pmb->rcl.right && prcl->bottom <= pmb->rcl.bottom); } /******************************Public*Routine******************************\ * bNextBoard * * Returns in ppmb a pointer to the next board after intersecting prcl, going * left-to-right then top-to-bottom. * * Returns TRUE if all boards intersecting prcl have been enumerated; FALSE * if there are more boards. * \**************************************************************************/ BOOL bNextBoard(RECTL* prcl, MULTI_BOARD** ppmb) { MULTI_BOARD* pmb; pmb = *ppmb; // We'll do all the boards in a row first, remembering that the // bounds rectangle can extend past the end of our virtual screen: if ((prcl->right > pmb->rcl.right) && (pmb->pmbRight != NULL)) { *ppmb = pmb->pmbRight; return(TRUE); } // Go to next row if need be, starting at the rcl.left: if ((prcl->bottom > pmb->rcl.bottom) && (pmb->pmbDown != NULL)) { pmb = pmb->pmbDown; while ((prcl->left < pmb->rcl.left) && (pmb->pmbLeft != NULL)) { pmb = pmb->pmbLeft; } *ppmb = pmb; return(TRUE); } return(FALSE); } /******************************Public*Routine******************************\ * vIntersect * * Returns in prclOut the intersection of rectangles prcl1 and prcl2. * \**************************************************************************/ VOID vIntersect(RECTL* prcl1, RECTL* prcl2, RECTL* prclOut) { prclOut->left = max(prcl1->left, prcl2->left); prclOut->top = max(prcl1->top, prcl2->top); prclOut->right = min(prcl1->right, prcl2->right); prclOut->bottom = min(prcl1->bottom, prcl2->bottom); } /******************************Public*Routine******************************\ * bVeryTemporaryInitializationCode * \**************************************************************************/ BOOL bVeryTemporaryInitializationCode(MDEV* pmdev) { MULTI_BOARD* pmb1 = NULL; MULTI_BOARD* pmb2 = NULL; pmb1 = EngAllocMem(FL_ZERO_MEMORY, sizeof(MULTI_BOARD), ALLOC_TAG); pmb2 = EngAllocMem(FL_ZERO_MEMORY, sizeof(MULTI_BOARD), ALLOC_TAG); if ((pmb1 == NULL) || (pmb2 == NULL)) { EngFreeMem(pmb1); EngFreeMem(pmb2); return(FALSE); } // Only this initialization part is hard-coded to have two monitors, // side-by-side. // Board one: pmb1->iHwBoard = 0; pmb1->iBoard = 0; pmb1->pmbNext = pmb2; pmb1->pmbRight = pmb2; pmdev->pmb = pmb1; pmdev->pmbUpperLeft = pmb1; pmdev->pmbLowerLeft = pmb1; pmdev->pmbHome = pmb1; // Board two: pmb2->iHwBoard = 1; pmb2->iBoard = 1; pmb2->pmbLeft = pmb1; pmdev->pmbUpperRight = pmb2; pmdev->pmbLowerRight = pmb2; pmdev->cxBoards = 2; pmdev->cyBoards = 1; pmdev->cBoards = 2; // Assume that the currently active board is the 'home' board: pmdev->pmbCurrent = pmdev->pmbHome; return(TRUE); } /******************************Public*Routine******************************\ * vSelectBoard * * Selects board pmb for drawing. We can have only one Metheus board active * at any time, so we have to disable the old board before enabling the new. * * Obviously, your hardware implementation may not require this entire * function. For example, you probably won't have to do this if you can * have each board's accelerator registers mapped into separate address * spaces. NOTE: You'll still have to set pmdev->pmbCurrent, however, * for DrvRealizeBrush to work! * \**************************************************************************/ VOID vSelectBoard(MDEV* pmdev, MULTI_BOARD* pmb) { LONG iOldHwBoard; ASSERTDD(pmdev->pmbCurrent != NULL, "Can't have NULL pmbCurrent"); // LATER: Expand this to handle more than 8 Metheus boards. iOldHwBoard = pmdev->pmbCurrent->iHwBoard; if (pmb->iHwBoard != iOldHwBoard) { OUTP(0x220, iOldHwBoard); // Disable old board OUTP(0x220, (8 | pmb->iHwBoard)); // Enable new one pmdev->pmbCurrent = pmb; // Remember new board } } /******************************Public*Routine******************************\ * bBoardCopy * * Given the BitBlt parameters in pbb, bitblt's the part of the rectangle * on the pmbSrc board that must bitblt'ed to the pmbDst board. Bails * out quickly if nothing actually has to be copied. * * Will do a screen-to-screen blt if pmbSrc and pmbDst are the same board; * otherwise it uses the psoTmp bitmap as temporary storage for transferring * between the two boards. * * NOTE: If your hardware allows you to have all the frame buffers mapped * into memory simultaneously, you can avoid the 'psoTmp' bitmap * allocation and extra copy! * \**************************************************************************/ BOOL bBoardCopy( BITBLTDATA* pbb, SURFOBJ* psoTmp, MULTI_BOARD* pmbDst, MULTI_BOARD* pmbSrc) { BOOL b; RECTL rclDst; LONG dx; LONG dy; RECTL rclTmp; POINTL ptlSrc; // If there's really no source board, we're guaranteed not to // have to copy anything from it: if (pmbSrc == NULL) return(TRUE); dx = pbb->prclDst->left - pbb->pptlSrc->x; dy = pbb->prclDst->top - pbb->pptlSrc->y; // Pretend we're going to copy the entire source board's screen. // rclDst would be the destination rectangle: rclDst.left = pmbSrc->rcl.left + dx; rclDst.right = pmbSrc->rcl.right + dx; rclDst.top = pmbSrc->rcl.top + dy; rclDst.bottom = pmbSrc->rcl.bottom + dy; // We really want to copy only the part that overlaps the // destination board's screen: vIntersect(&pmbDst->rcl, &rclDst, &rclDst); // Plus we really only want to copy anything to what is contained // in the original destination rectangle: vIntersect(&pbb->rclBounds, &rclDst, &rclDst); // rclDst is now the destination rectangle for our call. We'll // need a temporary bitmap for copying, so compute its extents: rclTmp.left = 0; rclTmp.top = 0; rclTmp.right = rclDst.right - rclDst.left; rclTmp.bottom = rclDst.bottom - rclDst.top; // If it's empty, we're outta here: if ((rclTmp.right <= 0) || (rclTmp.bottom <= 0)) return(TRUE); if (pmbDst == pmbSrc) { // If the source and destination are the same board, we don't // need a temporary bitmap: psoTmp = pmbSrc->pso; ptlSrc = *pbb->pptlSrc; } else { ASSERTDD(psoTmp != NULL, "Need non-null bitmap"); ASSERTDD(psoTmp->sizlBitmap.cx >= rclTmp.right, "Bitmap too small in x"); ASSERTDD(psoTmp->sizlBitmap.cy >= rclTmp.bottom, "Bitmap too small in y"); // Figure out the upper-left source corner corresponding to our // upper-left destination corner: ptlSrc.x = rclDst.left - dx; ptlSrc.y = rclDst.top - dy; // Copy the rectangle from the source to the temporary bitmap: GO_BOARD(pbb->pmdev, pmbSrc); b = DrvCopyBits(psoTmp, pmbSrc->pso, NULL, NULL, &rclTmp, &ptlSrc); // Then get ready to do the copy from the temporary bitmap to // the destination: ptlSrc.x = pbb->prclDst->left - rclDst.left; ptlSrc.y = pbb->prclDst->top - rclDst.top; } pbb->pco->rclBounds = rclDst; GO_BOARD(pbb->pmdev, pmbDst); b &= DrvBitBlt(pmbDst->pso, psoTmp, pbb->psoMask, pbb->pco, pbb->pxlo, pbb->prclDst, &ptlSrc, pbb->pptlMask, pbb->pbo, pbb->pptlBrush, pbb->rop4); return(b); } /******************************Public*Routine******************************\ * bBitBltBetweenBoards * * Handles screen-to-screen blts across multiple boards. * \**************************************************************************/ BOOL bBitBltBetweenBoards( SURFOBJ* psoDst, SURFOBJ* psoSrc, SURFOBJ* psoMask, CLIPOBJ* pco, XLATEOBJ* pxlo, RECTL* prclDst, POINTL* pptlSrc, POINTL* pptlMask, BRUSHOBJ* pbo, POINTL* pptlBrush, ROP4 rop4, RECTL* prclUnion, // Rectangular union of source and destination MULTI_BOARD* pmbUnion) // Board containing upper-left corner of prclUnion { BOOL b = TRUE; BITBLTDATA bb; RECTL rclOriginalBounds; SIZEL sizlBoard; SIZEL sizlDst; SIZEL sizl; MULTI_BOARD* pmbSrc; MULTI_BOARD* pmbDst; LONG dx; LONG dy; RECTL rclStart; SURFOBJ* pso0 = NULL; // Initialize these first off in case we SURFOBJ* pso1 = NULL; // early-out SURFOBJ* pso2 = NULL; SURFOBJ* pso3 = NULL; HSURF hsurf0 = 0; HSURF hsurf1 = 0; bb.pmdev = (MDEV*) psoDst->dhpdev; bb.psoDst = psoDst; bb.psoSrc = psoSrc; bb.psoMask = psoMask; bb.pxlo = pxlo; bb.prclDst = prclDst; bb.pptlSrc = pptlSrc; bb.pptlMask = pptlMask; bb.pbo = pbo; bb.pptlBrush = pptlBrush; bb.rop4 = rop4; bb.pco = pco; if ((pco == NULL) || (pco->iDComplexity == DC_TRIVIAL)) bb.pco = bb.pmdev->pco; vIntersect(&bb.pco->rclBounds, prclDst, &bb.rclBounds); rclOriginalBounds = bb.pco->rclBounds; sizlDst.cx = bb.rclBounds.right - bb.rclBounds.left; sizlDst.cy = bb.rclBounds.bottom - bb.rclBounds.top; // This really should never happen, but we'll be paranoid: if ((sizlDst.cx <= 0) || (sizlDst.cy <= 0)) return(TRUE); // Compute delta from source to destination: dx = prclDst->left - pptlSrc->x; dy = prclDst->top - pptlSrc->y; // Figure out the size of a board: sizlBoard.cx = bb.pmdev->pmbUpperLeft->rcl.right; sizlBoard.cy = bb.pmdev->pmbUpperLeft->rcl.bottom; // We use temporary bitmaps as intermediaries for copying from one // board to another. Note that it is much more efficient to allocate // on the fly, rather than keeping a dedicated bitmap around that // would have to be swapped in and out. // When the destination is close to the source, we can accomplish // most of the blt using screen-to-screen copies, and will need // only two small temporary bitmaps to temporarily hold the bits // that must be transferred from one board to another: if ((abs(dx) < (sizlBoard.cx >> 1)) && (abs(dy) < (sizlBoard.cy >> 1))) { // Create a temporary bitmap for the horizontal delta only if // the blt actually spans boards in the x-direction: if ((dx != 0) && (prclUnion->right > pmbUnion->rcl.right)) { sizl.cx = min(sizlDst.cx, abs(dx)); sizl.cy = min(sizlDst.cy, sizlBoard.cy - abs(dy)); hsurf0 = (HSURF) EngCreateBitmap(sizl, 0, bb.pmdev->iBitmapFormat, 0, NULL); pso1 = EngLockSurface(hsurf0); if (pso1 == NULL) return(FALSE); // Can use same temporary bitmap for section '3': pso3 = pso1; } // Similarly for the vertical delta: if ((dy != 0) && (prclUnion->bottom > pmbUnion->rcl.bottom)) { sizl.cx = min(sizlDst.cx, sizlBoard.cx - abs(dx)); sizl.cy = min(sizlDst.cy, abs(dy)); hsurf1 = (HSURF) EngCreateBitmap(sizl, 0, bb.pmdev->iBitmapFormat, 0, NULL); pso2 = EngLockSurface(hsurf1); if (pso2 == NULL) { b = FALSE; goto OuttaHere; } } } else { // Make the bitmap the size of a board, or the size of the // destination rectangle, which ever is smaller: sizl.cx = min(sizlDst.cx, sizlBoard.cx); sizl.cy = min(sizlDst.cy, sizlBoard.cy); hsurf0 = (HSURF) EngCreateBitmap(sizl, 0, bb.pmdev->iBitmapFormat, 0, NULL); pso0 = EngLockSurface(hsurf0); if (pso0 == NULL) return(FALSE); pso1 = pso0; pso2 = pso0; pso3 = pso0; } if ((dx <= 0) && (dy <= 0)) { // Move the rectangle up and to the left: // Find the board containing the upper-left corner of the destination: pmbDst = bb.pmdev->pmbUpperLeft; while (pmbDst->rcl.right <= bb.rclBounds.left) pmbDst = pmbDst->pmbRight; while (pmbDst->rcl.bottom <= bb.rclBounds.top) pmbDst = pmbDst->pmbDown; // Find the upper-left of the four source boards' rectangles which // can potentially overlap our destination board's rectangle: rclStart.left = pmbDst->rcl.left - dx; rclStart.top = pmbDst->rcl.top - dy; pmbSrc = pmbDst; while (pmbSrc->rcl.right <= rclStart.left) pmbSrc = pmbSrc->pmbRight; while (pmbSrc->rcl.bottom <= rclStart.top) pmbSrc = pmbSrc->pmbDown; while (TRUE) { b &= bBoardCopy(&bb, pso0, pmbDst, pmbSrc); b &= bBoardCopy(&bb, pso1, pmbDst, pmbSrc->pmbRight); b &= bBoardCopy(&bb, pso2, pmbDst, pmbSrc->pmbDown); if (pmbSrc->pmbDown != NULL) b &= bBoardCopy(&bb, pso3, pmbDst, pmbSrc->pmbDown->pmbRight); if (pmbDst->rcl.right < bb.rclBounds.right) { // Move right in the row of boards: pmbDst = pmbDst->pmbRight; pmbSrc = pmbSrc->pmbRight; } else { // We may be all done: if (pmbDst->rcl.bottom >= bb.rclBounds.bottom) break; // Nope, have to go down to left side of next lower row: while (pmbDst->rcl.left > bb.rclBounds.left) { pmbDst = pmbDst->pmbLeft; pmbSrc = pmbSrc->pmbLeft; } pmbDst = pmbDst->pmbDown; pmbSrc = pmbSrc->pmbDown; } } } else if ((dx >= 0) && (dy >= 0)) { // Move the rectangle down and to the right: // Find the board containing the lower-right corner of the destination: pmbDst = bb.pmdev->pmbLowerRight; while (pmbDst->rcl.left >= bb.rclBounds.right) pmbDst = pmbDst->pmbLeft; while (pmbDst->rcl.top >= bb.rclBounds.bottom) pmbDst = pmbDst->pmbUp; // Find the lower-right of the four source boards' rectangles which // can potentially overlap our destination board's rectangle: rclStart.right = pmbDst->rcl.right - dx; rclStart.bottom = pmbDst->rcl.bottom - dy; pmbSrc = pmbDst; while (pmbSrc->rcl.left >= rclStart.right) pmbSrc = pmbSrc->pmbLeft; while (pmbSrc->rcl.top >= rclStart.bottom) pmbSrc = pmbSrc->pmbUp; while (TRUE) { b &= bBoardCopy(&bb, pso0, pmbDst, pmbSrc); b &= bBoardCopy(&bb, pso1, pmbDst, pmbSrc->pmbLeft); b &= bBoardCopy(&bb, pso2, pmbDst, pmbSrc->pmbUp); if (pmbSrc->pmbUp != NULL) b &= bBoardCopy(&bb, pso3, pmbDst, pmbSrc->pmbUp->pmbLeft); if (pmbDst->rcl.left > bb.rclBounds.left) { // Move left in the row of boards: pmbDst = pmbDst->pmbLeft; pmbSrc = pmbSrc->pmbLeft; } else { // We may be all done: if (pmbDst->rcl.top <= bb.rclBounds.top) break; // Nope, have to go up to right side of next upper row: while (pmbDst->rcl.right < bb.rclBounds.right) { pmbDst = pmbDst->pmbRight; pmbSrc = pmbSrc->pmbRight; } pmbDst = pmbDst->pmbUp; pmbSrc = pmbSrc->pmbUp; } } } else if ((dx >= 0) && (dy <= 0)) { // Move the rectangle up and to the right: // Find the board containing the upper-right corner of the destination: pmbDst = bb.pmdev->pmbUpperRight; while (pmbDst->rcl.left >= bb.rclBounds.right) pmbDst = pmbDst->pmbLeft; while (pmbDst->rcl.bottom <= bb.rclBounds.top) pmbDst = pmbDst->pmbDown; // Find the upper-right of the four source boards' rectangles which // can potentially overlap our destination board's rectangle: rclStart.right = pmbDst->rcl.right - dx; rclStart.top = pmbDst->rcl.top - dy; pmbSrc = pmbDst; while (pmbSrc->rcl.left >= rclStart.right) pmbSrc = pmbSrc->pmbLeft; while (pmbSrc->rcl.bottom <= rclStart.top) pmbSrc = pmbSrc->pmbDown; while (TRUE) { b &= bBoardCopy(&bb, pso0, pmbDst, pmbSrc); b &= bBoardCopy(&bb, pso1, pmbDst, pmbSrc->pmbLeft); b &= bBoardCopy(&bb, pso2, pmbDst, pmbSrc->pmbDown); if (pmbSrc->pmbDown != NULL) b &= bBoardCopy(&bb, pso3, pmbDst, pmbSrc->pmbDown->pmbLeft); if (pmbDst->rcl.left > bb.rclBounds.left) { // Move left in the row of boards: pmbDst = pmbDst->pmbLeft; pmbSrc = pmbSrc->pmbLeft; } else { // We may be all done: if (pmbDst->rcl.bottom >= bb.rclBounds.bottom) break; // Nope, have to go down to right side of next lower row: while (pmbDst->rcl.right < bb.rclBounds.right) { pmbDst = pmbDst->pmbRight; pmbSrc = pmbSrc->pmbRight; } pmbDst = pmbDst->pmbDown; pmbSrc = pmbSrc->pmbDown; } } } else { // Move the rectangle down and to the left: // Find the board containing the lower-left corner of the destination: pmbDst = bb.pmdev->pmbLowerLeft; while (pmbDst->rcl.right <= bb.rclBounds.left) pmbDst = pmbDst->pmbRight; while (pmbDst->rcl.top >= bb.rclBounds.bottom) pmbDst = pmbDst->pmbUp; // Find the lower-left of the four source boards' rectangles which // can potentially overlap our destination board's rectangle: rclStart.left = pmbDst->rcl.left - dx; rclStart.bottom = pmbDst->rcl.bottom - dy; pmbSrc = pmbDst; while (pmbSrc->rcl.right <= rclStart.left) pmbSrc = pmbSrc->pmbRight; while (pmbSrc->rcl.top >= rclStart.bottom) pmbSrc = pmbSrc->pmbUp; while (TRUE) { b &= bBoardCopy(&bb, pso0, pmbDst, pmbSrc); b &= bBoardCopy(&bb, pso1, pmbDst, pmbSrc->pmbRight); b &= bBoardCopy(&bb, pso2, pmbDst, pmbSrc->pmbUp); if (pmbSrc->pmbUp != NULL) b &= bBoardCopy(&bb, pso3, pmbDst, pmbSrc->pmbUp->pmbRight); if (pmbDst->rcl.right < bb.rclBounds.right) { // Move right in the row of boards: pmbDst = pmbDst->pmbRight; pmbSrc = pmbSrc->pmbRight; } else { // We may be all done: if (pmbDst->rcl.top <= bb.rclBounds.top) break; // Nope, have to up down to left side of next upper row: while (pmbDst->rcl.left > bb.rclBounds.left) { pmbDst = pmbDst->pmbLeft; pmbSrc = pmbSrc->pmbLeft; } pmbDst = pmbDst->pmbUp; pmbSrc = pmbSrc->pmbUp; } } } GO_HOME(bb.pmdev); bb.pco->rclBounds = rclOriginalBounds; OuttaHere: // In one case, pso0 == pso1 == pso2 == pso3, and we don't want to // unlock the same surface twice: if (pso1 != pso2) EngUnlockSurface(pso1); EngUnlockSurface(pso2); EngDeleteSurface(hsurf0); EngDeleteSurface(hsurf1); return(b); } /******************************Public*Routine******************************\ * MulGetModes * \**************************************************************************/ ULONG MulGetModes( HANDLE hDriver, ULONG cjSize, DEVMODEW* pdm) { ULONG ulRet; ulRet = DrvGetModes(hDriver, cjSize, pdm); return(ulRet); } /******************************Public*Routine******************************\ * MulEnablePDEV * \**************************************************************************/ DHPDEV MulEnablePDEV( DEVMODEW* pDevmode, PWSTR pwszLogAddress, ULONG cPatterns, HSURF* ahsurfPatterns, ULONG cjGdiInfo, ULONG* pGdiInfo, ULONG cjDevInfo, DEVINFO* pDevInfo, HDEV hdev, PWSTR pwszDeviceName, HANDLE hDriver) { MDEV* pmdev; // Multi-board PDEV PDEV* ppdev; // Per-board PDEV MULTI_BOARD* pmb; LONG cx; LONG cy; // Note that we depend on the zero initialization: pmdev = (MDEV*) EngAllocMem(FL_ZERO_MEMORY, sizeof(MDEV), ALLOC_TAG); if (pmdev == NULL) goto ReturnFailure0; if (!bVeryTemporaryInitializationCode(pmdev)) goto ReturnFailure1; // For every board, we'll create our own PDEV and surface: for (pmb = pmdev->pmb; pmb != NULL; pmb = pmb->pmbNext) { // Initialize each board and create a surface to go with it: ppdev = (PDEV*) DrvEnablePDEV(pDevmode, pwszLogAddress, cPatterns, ahsurfPatterns, cjGdiInfo, pGdiInfo, cjDevInfo, pDevInfo, hdev, pwszDeviceName, hDriver); if (ppdev == NULL) goto ReturnFailure1; pmb->ppdev = ppdev; } // Choose a board, any board: pmb = pmdev->pmbLowerLeft; // Get a copy of what functions we're supposed to hook, sans // HOOK_STRETCHBLT because I can't be bothered to write its // MulStretchBlt function: pmdev->flHooks = pmb->ppdev->flHooks & ~HOOK_STRETCHBLT; pmdev->iBitmapFormat = pmb->ppdev->iBitmapFormat; // As part of our hard-coded initialization hack, we will simply // take whatever resolution was requested via the Control Panel // and create a two board virtual desktop, where the screens are // side-by-side. // // The DrvEnablePDEV function for any board has already figured // out what the requested mode was: cx = ((GDIINFO*) pGdiInfo)->ulHorzRes; cy = ((GDIINFO*) pGdiInfo)->ulVertRes; // Set up bounds for left board: pmb->rcl.left = 0; pmb->rcl.top = 0; pmb->rcl.right = cx; pmb->rcl.bottom = cy; // Set up bounds for right board: pmb = pmb->pmbRight; pmb->rcl.left = cx; pmb->rcl.top = 0; pmb->rcl.right = 2 * cx; pmb->rcl.bottom = cy; // Adjust the stuff we return back to GDI: //((GDIINFO*) pGdiInfo)->ulDesktopHorzRes *= 2; // ((GDIINFO*) pGdiInfo)->ulHorzSize *= 2; // With the Metheus board, since only one board can be mapped in // at one time, we cannot allow asynchronous pointers: pDevInfo->flGraphicsCaps &= ~(GCAPS_ASYNCMOVE | GCAPS_ASYNCCHANGE); return((DHPDEV) pmdev); ReturnFailure1: MulDisablePDEV((DHPDEV) pmdev); ReturnFailure0: DISPDBG((0, "Failed MulEnablePDEV")); return(0); } /******************************Public*Routine******************************\ * MulCompletePDEV * \**************************************************************************/ VOID MulCompletePDEV( DHPDEV dhpdev, HDEV hdev) { MDEV* pmdev; MULTI_BOARD* pmb; pmdev = (MDEV*) dhpdev; pmdev->hdev = hdev; for (pmb = pmdev->pmb; pmb != NULL; pmb = pmb->pmbNext) { GO_BOARD(pmdev, pmb); DrvCompletePDEV((DHPDEV) pmb->ppdev, hdev); } } /******************************Public*Routine******************************\ * MulEnableSurface * \**************************************************************************/ HSURF MulEnableSurface(DHPDEV dhpdev) { MDEV* pmdev; MULTI_BOARD* pmb; SIZEL sizlVirtual; HSURF hsurfBoard; // Gnarly, dude! SURFOBJ* psoBoard; DSURF* pdsurfBoard; HSURF hsurfVirtual; CLIPOBJ* pco; pmdev = (MDEV*) dhpdev; for (pmb = pmdev->pmb; pmb != NULL; pmb = pmb->pmbNext) { GO_BOARD(pmdev, pmb); hsurfBoard = DrvEnableSurface((DHPDEV) pmb->ppdev); if (hsurfBoard == 0) goto ReturnFailure; pmb->hsurf = hsurfBoard; // Every time we draw on a particular board, we'll refer to it // using this surface: psoBoard = EngLockSurface(hsurfBoard); if (psoBoard == NULL) goto ReturnFailure; pmb->pso = psoBoard; // There are a few things in the board's data instances that we // have to modify: pdsurfBoard = (DSURF*) psoBoard->dhsurf; pmb->ppdev->iBoard = pmb->iBoard; pdsurfBoard->poh->x = -pmb->rcl.left; pdsurfBoard->poh->y = -pmb->rcl.top; // This is sort of a hack. Whenever we pass a call on to a board's // Drv function using 'pmb->pso', it has to be able to retrieve // it's own PDEV pointer from 'dhpdev': pmb->pso->dhpdev = (DHPDEV) pmb->ppdev; } // Now create the surface which the engine will use to refer to our // entire multi-board virtual screen: sizlVirtual.cx = pmdev->pmbLowerRight->rcl.right; sizlVirtual.cy = pmdev->pmbLowerRight->rcl.bottom; hsurfVirtual = EngCreateDeviceSurface((DHSURF) pmdev, sizlVirtual, pmdev->iBitmapFormat); if (hsurfVirtual == 0) goto ReturnFailure; pmdev->hsurf = hsurfVirtual; if (!EngAssociateSurface(hsurfVirtual, pmdev->hdev, pmdev->flHooks)) goto ReturnFailure; // Create a temporary clip object that we can use when a drawing // operation spans multiple boards: pco = EngCreateClip(); if (pco == NULL) goto ReturnFailure; pmdev->pco = pco; pmdev->pco->iDComplexity = DC_RECT; pmdev->pco->iMode = TC_RECTANGLES; pmdev->pco->rclBounds.left = 0; pmdev->pco->rclBounds.top = 0; pmdev->pco->rclBounds.right = pmdev->pmbLowerRight->rcl.right; pmdev->pco->rclBounds.bottom = pmdev->pmbLowerRight->rcl.bottom; return(hsurfVirtual); ReturnFailure: MulDisableSurface((DHPDEV) pmdev); DISPDBG((0, "Failed MulEnableSurface")); return(0); } /******************************Public*Routine******************************\ * MulStrokePath * \**************************************************************************/ BOOL MulStrokePath( SURFOBJ* pso, PATHOBJ* ppo, CLIPOBJ* pco, XFORMOBJ* pxo, BRUSHOBJ* pbo, POINTL* pptlBrush, LINEATTRS* pla, MIX mix) { RECTFX rcfxBounds; RECTL rclBounds; MDEV* pmdev; RECTL rclOriginalBounds; MULTI_BOARD* pmb; BOOL b; FLOAT_LONG elStyleState; // Get the path bounds and make it lower-right exclusive: PATHOBJ_vGetBounds(ppo, &rcfxBounds); rclBounds.left = (rcfxBounds.xLeft >> 4); rclBounds.top = (rcfxBounds.yTop >> 4); rclBounds.right = (rcfxBounds.xRight >> 4) + 2; rclBounds.bottom = (rcfxBounds.yBottom >> 4) + 2; pmdev = (MDEV*) pso->dhpdev; if (bFindBoard(pmdev, &rclBounds, &pmb)) { GO_BOARD(pmdev, pmb); b = DrvStrokePath(pmb->pso, ppo, pco, pxo, pbo, pptlBrush, pla, mix); } else { if ((pco == NULL) || (pco->iDComplexity == DC_TRIVIAL)) { // If the CLIPOBJ doesn't have at least DC_RECT complexity, // substitute one that does: pco = pmdev->pco; } rclOriginalBounds = pco->rclBounds; elStyleState = pla->elStyleState; b = TRUE; do { // For each board, make sure the style state gets reset and // the path enumeration gets restarted: pla->elStyleState = elStyleState; PATHOBJ_vEnumStart(ppo); if (bIntersect(&rclOriginalBounds, &pmb->rcl, &pco->rclBounds)) { GO_BOARD(pmdev, pmb); b &= DrvStrokePath(pmb->pso, ppo, pco, pxo, pbo, pptlBrush, pla, mix); } } while (bNextBoard(&rclBounds, &pmb)); // Restore the original clip bounds: pco->rclBounds = rclOriginalBounds; } GO_HOME(pmdev); return(b); } /******************************Public*Routine******************************\ * MulFillPath * \**************************************************************************/ BOOL MulFillPath( SURFOBJ* pso, PATHOBJ* ppo, CLIPOBJ* pco, BRUSHOBJ* pbo, POINTL* pptlBrush, MIX mix, FLONG flOptions) { RECTFX rcfxBounds; RECTL rclBounds; MDEV* pmdev; RECTL rclOriginalBounds; MULTI_BOARD* pmb; BOOL b; // Get the path bounds and make it lower-right exclusive: PATHOBJ_vGetBounds(ppo, &rcfxBounds); rclBounds.left = (rcfxBounds.xLeft >> 4); rclBounds.top = (rcfxBounds.yTop >> 4); rclBounds.right = (rcfxBounds.xRight >> 4) + 2; rclBounds.bottom = (rcfxBounds.yBottom >> 4) + 2; pmdev = (MDEV*) pso->dhpdev; if (bFindBoard(pmdev, &rclBounds, &pmb)) { GO_BOARD(pmdev, pmb); b = DrvFillPath(pmb->pso, ppo, pco, pbo, pptlBrush, mix, flOptions); } else { if ((pco == NULL) || (pco->iDComplexity == DC_TRIVIAL)) { // If the CLIPOBJ doesn't have at least DC_RECT complexity, // substitute one that does: pco = pmdev->pco; } rclOriginalBounds = pco->rclBounds; b = TRUE; do { // Make sure we restart the path enumeration if need be: PATHOBJ_vEnumStart(ppo); if (bIntersect(&rclOriginalBounds, &pmb->rcl, &pco->rclBounds)) { GO_BOARD(pmdev, pmb); b &= DrvFillPath(pmb->pso, ppo, pco, pbo, pptlBrush, mix, flOptions); } } while (bNextBoard(&rclBounds, &pmb)); // Restore the original clip bounds: pco->rclBounds = rclOriginalBounds; } GO_HOME(pmdev); return(b); } /******************************Public*Routine******************************\ * MulBitBlt * \**************************************************************************/ BOOL MulBitBlt( SURFOBJ* psoDst, SURFOBJ* psoSrc, SURFOBJ* psoMask, CLIPOBJ* pco, XLATEOBJ* pxlo, RECTL* prclDst, POINTL* pptlSrc, POINTL* pptlMask, BRUSHOBJ* pbo, POINTL* pptlBrush, ROP4 rop4) { BOOL bFromScreen; BOOL bToScreen; MDEV* pmdev; MULTI_BOARD* pmb; RECTL rclOriginalBounds; BOOL b; RECTL rclBounds; LONG xOffset; LONG yOffset; RECTL rclDstBounds; RECTL rclDst; bFromScreen = ((psoSrc != NULL) && (psoSrc->iType == STYPE_DEVICE)); bToScreen = ((psoDst != NULL) && (psoDst->iType == STYPE_DEVICE)); // We copy the prclDst rectangle here because sometimes GDI will // simply point prclDst to the same rectangle in pco->rclBounds, // and we'll be mucking with pco->rclBounds... rclDst = *prclDst; if (bToScreen && bFromScreen) { /////////////////////////////////////////////////////////////// // Screen-to-screen /////////////////////////////////////////////////////////////// pmdev = (MDEV*) psoDst->dhpdev; // rclBounds is the union of the source and destination rectangles: rclBounds.left = min(rclDst.left, pptlSrc->x); rclBounds.top = min(rclDst.top, pptlSrc->y); rclBounds.right = max(rclDst.right, pptlSrc->x + (rclDst.right - rclDst.left)); rclBounds.bottom = max(rclDst.bottom, pptlSrc->y + (rclDst.bottom - rclDst.top)); if (bFindBoard(pmdev, &rclBounds, &pmb)) { GO_BOARD(pmdev, pmb); b = DrvBitBlt(pmb->pso, pmb->pso, psoMask, pco, pxlo, &rclDst, pptlSrc, pptlMask, pbo, pptlBrush, rop4); } else { return(bBitBltBetweenBoards(psoDst, psoSrc, psoMask, pco, pxlo, &rclDst, pptlSrc, pptlMask, pbo, pptlBrush, rop4, &rclBounds, pmb)); } } else if (bToScreen) { /////////////////////////////////////////////////////////////// // To-screen /////////////////////////////////////////////////////////////// pmdev = (MDEV*) psoDst->dhpdev; if (bFindBoard(pmdev, &rclDst, &pmb)) { GO_BOARD(pmdev, pmb); b = DrvBitBlt(pmb->pso, psoSrc, psoMask, pco, pxlo, &rclDst, pptlSrc, pptlMask, pbo, pptlBrush, rop4); } else { if ((pco == NULL) || (pco->iDComplexity == DC_TRIVIAL)) { // If the CLIPOBJ doesn't have at least DC_RECT complexity, // substitute one that does: pco = pmdev->pco; } rclOriginalBounds = pco->rclBounds; b = TRUE; do { if (bIntersect(&rclOriginalBounds, &pmb->rcl, &pco->rclBounds)) { GO_BOARD(pmdev, pmb); b &= DrvBitBlt(pmb->pso, psoSrc, psoMask, pco, pxlo, &rclDst, pptlSrc, pptlMask, pbo, pptlBrush, rop4); } } while (bNextBoard(&rclDst, &pmb)); // Restore the original clip bounds: pco->rclBounds = rclOriginalBounds; } } else { /////////////////////////////////////////////////////////////// // From-screen /////////////////////////////////////////////////////////////// pmdev = (MDEV*) psoSrc->dhpdev; // rclBounds is the source rectangle: rclBounds.left = pptlSrc->x; rclBounds.top = pptlSrc->y; rclBounds.right = pptlSrc->x + (rclDst.right - rclDst.left); rclBounds.bottom = pptlSrc->y + (rclDst.bottom - rclDst.top); if (bFindBoard(pmdev, &rclBounds, &pmb)) { GO_BOARD(pmdev, pmb); b = DrvBitBlt(psoDst, pmb->pso, psoMask, pco, pxlo, &rclDst, pptlSrc, pptlMask, pbo, pptlBrush, rop4); } else { if ((pco == NULL) || (pco->iDComplexity == DC_TRIVIAL)) { // If the CLIPOBJ doesn't have at least DC_RECT complexity, // substitute one that does: pco = pmdev->pco; } rclOriginalBounds = pco->rclBounds; // Offset to transform from source rectangle to destination // rectangle: xOffset = rclDst.left - pptlSrc->x; yOffset = rclDst.top - pptlSrc->y; b = TRUE; do { // Since the screen is the source, but the clip bounds applies // to the destination, we have to convert our board clipping // information to destination coordinates: rclDstBounds.left = pmb->rcl.left + xOffset; rclDstBounds.right = pmb->rcl.right + xOffset; rclDstBounds.top = pmb->rcl.top + yOffset; rclDstBounds.bottom = pmb->rcl.bottom + yOffset; if (bIntersect(&rclOriginalBounds, &rclDstBounds, &pco->rclBounds)) { GO_BOARD(pmdev, pmb); b &= DrvBitBlt(psoDst, pmb->pso, psoMask, pco, pxlo, &rclDst, pptlSrc, pptlMask, pbo, pptlBrush, rop4); } } while (bNextBoard(&rclBounds, &pmb)); // Restore the original clip bounds: pco->rclBounds = rclOriginalBounds; } } GO_HOME(pmdev); return(b); } /******************************Public*Routine******************************\ * MulDisablePDEV * * Note: May be called before MulEnablePDEV successfully completed! * \**************************************************************************/ VOID MulDisablePDEV(DHPDEV dhpdev) { MULTI_BOARD* pmb; MDEV* pmdev; pmdev = (MDEV*) dhpdev; for (pmb = pmdev->pmb; pmb != NULL; pmb = pmb->pmbNext) { if (pmb->ppdev != NULL) { GO_BOARD(pmdev, pmb); DrvDisablePDEV((DHPDEV) pmb->ppdev); } } GO_HOME(pmdev); for (pmb = pmdev->pmb; pmb != NULL; pmb = pmb->pmbNext) { EngFreeMem(pmb); // Undo 'bVeryTemporaryInitializationCode' } // allocation EngFreeMem(pmdev); } /******************************Public*Routine******************************\ * MulDisableSurface * * Note: May be called before MulEnableSurface successfully completed! * \**************************************************************************/ VOID MulDisableSurface(DHPDEV dhpdev) { MULTI_BOARD* pmb; MDEV* pmdev; pmdev = (MDEV*) dhpdev; if (pmdev->pco != NULL) EngDeleteClip(pmdev->pco); EngDeleteSurface(pmdev->hsurf); for (pmb = pmdev->pmb; pmb != NULL; pmb = pmb->pmbNext) { GO_BOARD(pmdev, pmb); EngUnlockSurface(pmb->pso); DrvDisableSurface((DHPDEV) pmb->ppdev); } GO_HOME(pmdev); } /******************************Public*Routine******************************\ * MulAssertMode * \**************************************************************************/ BOOL MulAssertMode( DHPDEV dhpdev, BOOL bEnable) { MDEV* pmdev; MULTI_BOARD* pmb; pmdev = (MDEV*) dhpdev; if (!bEnable) { // When switching to full-screen mode, PatBlt blackness over // all the inactive screens (otherwise it looks goofy when // the desktop is frozen on the inactive screens and the user // can't do anything with it): for (pmb = pmdev->pmb; pmb != NULL; pmb = pmb->pmbNext) { if (pmb != pmdev->pmbHome) { GO_BOARD(pmdev, pmb); DrvBitBlt(pmb->pso, NULL, NULL, NULL, NULL, &pmb->rcl, NULL, NULL, NULL, NULL, 0); } } } // We use the 'home' board for full-screen switching: GO_BOARD(pmdev, pmdev->pmbHome); DrvAssertMode((DHPDEV) pmdev->pmbHome->ppdev, bEnable); return TRUE; } /******************************Public*Routine******************************\ * MulMovePointer * \**************************************************************************/ VOID MulMovePointer( SURFOBJ* pso, LONG x, LONG y, RECTL* prcl) { MDEV* pmdev; MULTI_BOARD* pmbPointer; RECTL rclPointer; pmdev = (MDEV*) pso->dhpdev; pmbPointer = pmdev->pmbPointer; if (pmbPointer != NULL) { // The most common case is when the pointer is moved to a spot // on the same board: if ((x >= pmbPointer->rcl.left) && (x < pmbPointer->rcl.right) && (y >= pmbPointer->rcl.top) && (y < pmbPointer->rcl.bottom)) { GO_BOARD(pmdev, pmbPointer); DrvMovePointer(pmbPointer->pso, x, y, prcl); GO_HOME(pmdev); return; } // Tell the old board to erase its cursor: GO_BOARD(pmdev, pmbPointer); DrvMovePointer(pmbPointer->pso, -1, -1, NULL); } if (x == -1) { pmdev->pmbPointer = NULL; GO_HOME(pmdev); return; } // Find the new board and tell it to draw its new cursor: rclPointer.left = x; rclPointer.right = x; rclPointer.top = y; rclPointer.bottom = y; bFindBoard(pmdev, &rclPointer, &pmbPointer); GO_BOARD(pmdev, pmbPointer); DrvMovePointer(pmbPointer->pso, x, y, prcl); pmdev->pmbPointer = pmbPointer; GO_HOME(pmdev); } /******************************Public*Routine******************************\ * MulSetPointerShape * \**************************************************************************/ ULONG MulSetPointerShape( SURFOBJ* pso, SURFOBJ* psoMask, SURFOBJ* psoColor, XLATEOBJ* pxlo, LONG xHot, LONG yHot, LONG x, LONG y, RECTL* prcl, FLONG fl) { MULTI_BOARD* pmb; MDEV* pmdev; ULONG ulRetPrevious = (ULONG) -1; ULONG ulRet; RECTL rclPointer; MULTI_BOARD* pmbPointer; // Board on which cursor is visible pmdev = (MDEV*) pso->dhpdev; // Find out which board that the cursor is visible on, if any: pmbPointer = NULL; if (x != 1) { rclPointer.left = x; rclPointer.right = x; rclPointer.top = y; rclPointer.bottom = y; bFindBoard(pmdev, &rclPointer, &pmbPointer); } pmdev->pmbPointer = pmbPointer; // LATER: Fix the case for when some boards may fail the call, and others // won't. for (pmb = pmdev->pmb; pmb != NULL; pmb = pmb->pmbNext) { // We notify all boards of the new cursor shape, but only the board // on which the cursor is visible is told to draw it: GO_BOARD(pmdev, pmb); if (pmb == pmbPointer) { ulRet = DrvSetPointerShape(pmb->pso, psoMask, psoColor, pxlo, xHot, yHot, x, y, prcl, fl); } else { ulRet = DrvSetPointerShape(pmb->pso, psoMask, psoColor, pxlo, xHot, yHot, -1, y, NULL, fl); } if ((ulRetPrevious != (ULONG) -1) && (ulRetPrevious != ulRet)) { RIP("MulSetPointerShape not all DrvSetPointerShapes same\n"); } ulRetPrevious = ulRet; } GO_HOME(pmdev); return(ulRetPrevious); } /******************************Public*Routine******************************\ * MulDitherColor * \**************************************************************************/ ULONG MulDitherColor( DHPDEV dhpdev, ULONG iMode, ULONG rgb, ULONG* pul) { PDEV* ppdev; ULONG ulRet; // Let the first board's driver do the dithering: ppdev = ((MDEV*) dhpdev)->pmb->ppdev; ulRet = DrvDitherColor((DHPDEV) ppdev, iMode, rgb, pul); return(ulRet); } /******************************Public*Routine******************************\ * MulSetPalette * \**************************************************************************/ BOOL MulSetPalette( DHPDEV dhpdev, PALOBJ* ppalo, FLONG fl, ULONG iStart, ULONG cColors) { MULTI_BOARD* pmb; MDEV* pmdev; BOOL bRet = TRUE; // Notify all boards of the palette change: pmdev = (MDEV*) dhpdev; for (pmb = pmdev->pmb; pmb != NULL; pmb = pmb->pmbNext) { GO_BOARD(pmdev, pmb); bRet &= DrvSetPalette((DHPDEV) pmb->ppdev, ppalo, fl, iStart, cColors); } GO_HOME(pmdev); return(bRet); } /******************************Public*Routine******************************\ * MulCopyBits * \**************************************************************************/ BOOL MulCopyBits( SURFOBJ* psoDst, SURFOBJ* psoSrc, CLIPOBJ* pco, XLATEOBJ* pxlo, RECTL* prclDst, POINTL* pptlSrc) { BOOL bFromScreen; BOOL bToScreen; MDEV* pmdev; MULTI_BOARD* pmb; RECTL rclOriginalBounds; BOOL b; RECTL rclBounds; RECTL rclDst; bFromScreen = ((psoSrc != NULL) && (psoSrc->iType == STYPE_DEVICE)); bToScreen = ((psoDst != NULL) && (psoDst->iType == STYPE_DEVICE)); // We copy the prclDst rectangle here because sometimes GDI will // simply point prclDst to the same rectangle in pco->rclBounds, // and we'll be mucking with pco->rclBounds... rclDst = *prclDst; if (bToScreen && bFromScreen) { /////////////////////////////////////////////////////////////// // Screen-to-screen /////////////////////////////////////////////////////////////// pmdev = (MDEV*) psoDst->dhpdev; // rclBounds is the union of the source and destination rectangles: rclBounds.left = min(rclDst.left, pptlSrc->x); rclBounds.top = min(rclDst.top, pptlSrc->y); rclBounds.right = max(rclDst.right, pptlSrc->x + (rclDst.right - rclDst.left)); rclBounds.bottom = max(rclDst.bottom, pptlSrc->y + (rclDst.bottom - rclDst.top)); if (bFindBoard(pmdev, &rclBounds, &pmb)) { GO_BOARD(pmdev, pmb); b = DrvCopyBits(pmb->pso, pmb->pso, pco, pxlo, &rclDst, pptlSrc); } else { return(bBitBltBetweenBoards(psoDst, psoSrc, NULL, pco, pxlo, &rclDst, pptlSrc, NULL, NULL, NULL, 0x0000cccc, &rclBounds, pmb)); } } else if (bToScreen) { /////////////////////////////////////////////////////////////// // To-screen /////////////////////////////////////////////////////////////// pmdev = (MDEV*) psoDst->dhpdev; if (bFindBoard(pmdev, &rclDst, &pmb)) { GO_BOARD(pmdev, pmb); b = DrvCopyBits(pmb->pso, psoSrc, pco, pxlo, &rclDst, pptlSrc); } else { if ((pco == NULL) || (pco->iDComplexity == DC_TRIVIAL)) { // If the CLIPOBJ doesn't have at least DC_RECT complexity, // substitute one that does: pco = pmdev->pco; } rclOriginalBounds = pco->rclBounds; b = TRUE; do { if (bIntersect(&rclOriginalBounds, &pmb->rcl, &pco->rclBounds)) { GO_BOARD(pmdev, pmb); b &= DrvCopyBits(pmb->pso, psoSrc, pco, pxlo, &rclDst, pptlSrc); } } while (bNextBoard(&rclDst, &pmb)); // Restore the original clip bounds: pco->rclBounds = rclOriginalBounds; } } else { /////////////////////////////////////////////////////////////// // From-screen /////////////////////////////////////////////////////////////// // This rarely happens, so save some code space: return(MulBitBlt(psoDst, psoSrc, NULL, pco, pxlo, prclDst, pptlSrc, NULL, NULL, NULL, 0x0000cccc)); } GO_HOME(pmdev); return(b); } /******************************Public*Routine******************************\ * MulTextOut * \**************************************************************************/ BOOL MulTextOut( SURFOBJ* pso, STROBJ* pstro, FONTOBJ* pfo, CLIPOBJ* pco, RECTL* prclExtra, RECTL* prclOpaque, BRUSHOBJ* pboFore, BRUSHOBJ* pboOpaque, POINTL* pptlOrg, MIX mix) { MDEV* pmdev; MULTI_BOARD* pmb; RECTL rclOriginalBounds; BYTE fjOriginalOptions; BOOL b; RECTL* prclBounds; FONT_CONSUMER* pfcArray; pmdev = (MDEV*) pso->dhpdev; // In keeping with our philosophy for multiple board support, we handle // multiple consumers of the same font at this level. We do this by // monitoring pfo->pvConsumer, and the first time a board sets the // field, we take control of pfo->pvConsumer. We use it to allocate // a pvConsumer array where we can keep track of every board's // individual pvConsumer. pfcArray = pfo->pvConsumer; prclBounds = (prclOpaque != NULL) ? prclOpaque : &pstro->rclBkGround; bFindBoard(pmdev, prclBounds, &pmb); if ((pco == NULL) || (pco->iDComplexity == DC_TRIVIAL)) { // If the CLIPOBJ doesn't have at least DC_RECT complexity, // substitute one that does: pco = pmdev->pco; } rclOriginalBounds = pco->rclBounds; fjOriginalOptions = pco->fjOptions; // OR in the OC_BANK_CLIP flag to let GDI know that we may be calling // EngTextOut multiple times with the same parameters (EngTextOut // is destructive in that it modifies that parameters passed to it, // unless this bit is set): pco->fjOptions |= OC_BANK_CLIP; b = TRUE; do { if (pfcArray != NULL) pfo->pvConsumer = pfcArray->apvc[pmb->iBoard].pvConsumer; // Make sure we restart the glyph enumeration if need be: STROBJ_vEnumStart(pstro); if (bIntersect(&rclOriginalBounds, &pmb->rcl, &pco->rclBounds)) { GO_BOARD(pmdev, pmb); b &= DrvTextOut(pmb->pso, pstro, pfo, pco, prclExtra, prclOpaque, pboFore, pboOpaque, pptlOrg, mix); } if (pfcArray != NULL) { // Copy the pvConsumer, in case the last DrvTextOut changed // it: pfcArray->apvc[pmb->iBoard].pvConsumer = pfo->pvConsumer; } else { if (pfo->pvConsumer != NULL) { // The board allocated a new consumer, so create our array // to keep track of consumers for every board: pfcArray = (FONT_CONSUMER*) EngAllocMem(FL_ZERO_MEMORY, sizeof(FONT_CONSUMER), ALLOC_TAG); if (pfcArray == NULL) DrvDestroyFont(pfo); else { pfcArray->cConsumers = pmdev->cBoards; pfcArray->apvc[pmb->iBoard].pvConsumer = pfo->pvConsumer; } } } } while (bNextBoard(prclBounds, &pmb)); // Restore the original clip bounds: pco->rclBounds = rclOriginalBounds; pco->fjOptions = fjOriginalOptions; // Make sure we restore/set the font's pvConsumer: pfo->pvConsumer = pfcArray; GO_HOME(pmdev); return(b); } /******************************Public*Routine******************************\ * MulDestroyFont * \**************************************************************************/ VOID MulDestroyFont(FONTOBJ *pfo) { FONT_CONSUMER* pfcArray; LONG i; PVOID pvConsumer; if (pfo->pvConsumer != NULL) { pfcArray = pfo->pvConsumer; for (i = 0; i < pfcArray->cConsumers; i++) { pvConsumer = pfcArray->apvc[i].pvConsumer; if (pvConsumer != NULL) { pfo->pvConsumer = pvConsumer; DrvDestroyFont(pfo); } } EngFreeMem(pfcArray); pfo->pvConsumer = NULL; } } /******************************Public*Routine******************************\ * MulPaint * \**************************************************************************/ BOOL MulPaint( SURFOBJ* pso, CLIPOBJ* pco, BRUSHOBJ* pbo, POINTL* pptlBrush, MIX mix) { MDEV* pmdev; RECTL rclOriginalBounds; MULTI_BOARD* pmb; BOOL b; pmdev = (MDEV*) pso->dhpdev; if (bFindBoard(pmdev, &pco->rclBounds, &pmb)) { GO_BOARD(pmdev, pmb); b = DrvPaint(pmb->pso, pco, pbo, pptlBrush, mix); } else { rclOriginalBounds = pco->rclBounds; b = TRUE; do { if (bIntersect(&rclOriginalBounds, &pmb->rcl, &pco->rclBounds)) { GO_BOARD(pmdev, pmb); b &= DrvPaint(pmb->pso, pco, pbo, pptlBrush, mix); } } while (bNextBoard(&rclOriginalBounds, &pmb)); // Restore the original clip bounds: pco->rclBounds = rclOriginalBounds; } GO_HOME(pmdev); return(b); } /******************************Public*Routine******************************\ * MulRealizeBrush * \**************************************************************************/ BOOL MulRealizeBrush( BRUSHOBJ* pbo, SURFOBJ* psoTarget, SURFOBJ* psoPattern, SURFOBJ* psoMask, XLATEOBJ* pxlo, ULONG iHatch) { MDEV* pmdev; BOOL b; pmdev = (MDEV*) psoTarget->dhpdev; // DrvRealizeBrush is only ever calling from within a Drv function. // 'psoTarget' points to our multi-board surface, but we have to point // it to the surface of the board for which the DrvBitBlt call was made. // NOTE: If SLOWFILL_PATTERNS are enabled, we will have to do a // GO_BOARD here, because our DrvRealizeBrush routine actually // draws for that case. b = DrvRealizeBrush(pbo, pmdev->pmbCurrent->pso, psoPattern, psoMask, pxlo, iHatch); return(b); } #endif // MULTI_BOARDS