844 lines
33 KiB
C
844 lines
33 KiB
C
/*
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*
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* Copyright (C) 2000 Keith Packard
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* 2004 Eric Anholt
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* 2005 Zack Rusin
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of copyright holders not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Copyright holders make no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
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* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*/
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/** @file
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* This is the header containing the public API of EXA for exa drivers.
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*/
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#ifndef EXA_H
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#define EXA_H
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#include "scrnintstr.h"
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#include "pixmapstr.h"
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#include "windowstr.h"
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#include "gcstruct.h"
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#include "picturestr.h"
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#include "fb.h"
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#define EXA_VERSION_MAJOR 2
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#define EXA_VERSION_MINOR 5
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#define EXA_VERSION_RELEASE 0
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typedef struct _ExaOffscreenArea ExaOffscreenArea;
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typedef void (*ExaOffscreenSaveProc) (ScreenPtr pScreen, ExaOffscreenArea *area);
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typedef enum _ExaOffscreenState {
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ExaOffscreenAvail,
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ExaOffscreenRemovable,
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ExaOffscreenLocked
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} ExaOffscreenState;
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struct _ExaOffscreenArea {
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int base_offset; /* allocation base */
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int offset; /* aligned offset */
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int size; /* total allocation size */
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unsigned last_use;
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pointer privData;
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ExaOffscreenSaveProc save;
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ExaOffscreenState state;
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ExaOffscreenArea *next;
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unsigned eviction_cost;
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ExaOffscreenArea *prev; /* Double-linked list for defragmentation */
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int align; /* required alignment */
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};
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/**
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* The ExaDriver structure is allocated through exaDriverAlloc(), and then
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* fllled in by drivers.
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*/
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typedef struct _ExaDriver {
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/**
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* exa_major and exa_minor should be set by the driver to the version of
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* EXA which the driver was compiled for (or configures itself at runtime
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* to support). This allows EXA to extend the structure for new features
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* without breaking ABI for drivers compiled against older versions.
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*/
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int exa_major, exa_minor;
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/**
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* memoryBase is the address of the beginning of framebuffer memory.
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* The visible screen should be within memoryBase to memoryBase +
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* memorySize.
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*/
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CARD8 *memoryBase;
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/**
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* offScreenBase is the offset from memoryBase of the beginning of the area
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* to be managed by EXA's linear offscreen memory manager.
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*
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* In XFree86 DDX drivers, this is probably:
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* (pScrn->displayWidth * cpp * pScrn->virtualY)
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*/
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unsigned long offScreenBase;
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/**
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* memorySize is the length (in bytes) of framebuffer memory beginning
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* from memoryBase.
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*
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* The offscreen memory manager will manage the area beginning at
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* (memoryBase + offScreenBase), with a length of (memorySize -
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* offScreenBase)
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*
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* In XFree86 DDX drivers, this is probably (pScrn->videoRam * 1024)
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*/
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unsigned long memorySize;
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/**
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* pixmapOffsetAlign is the byte alignment necessary for pixmap offsets
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* within framebuffer.
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*
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* Hardware typically has a required alignment of offsets, which may or may
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* not be a power of two. EXA will ensure that pixmaps managed by the
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* offscreen memory manager meet this alignment requirement.
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*/
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int pixmapOffsetAlign;
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/**
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* pixmapPitchAlign is the byte alignment necessary for pixmap pitches
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* within the framebuffer.
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*
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* Hardware typically has a required alignment of pitches for acceleration.
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* For 3D hardware, Composite acceleration often requires that source and
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* mask pixmaps (textures) have a power-of-two pitch, which can be demanded
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* using EXA_OFFSCREEN_ALIGN_POT. These pitch requirements only apply to
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* pixmaps managed by the offscreen memory manager. Thus, it is up to the
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* driver to ensure that the visible screen has an appropriate pitch for
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* acceleration.
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*/
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int pixmapPitchAlign;
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/**
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* The flags field is bitfield of boolean values controlling EXA's behavior.
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*
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* The flags in clude EXA_OFFSCREEN_PIXMAPS, EXA_OFFSCREEN_ALIGN_POT, and
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* EXA_TWO_BITBLT_DIRECTIONS.
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*/
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int flags;
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/** @{ */
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/**
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* maxX controls the X coordinate limitation for rendering from the card.
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* The driver should never receive a request for rendering beyond maxX
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* in the X direction from the origin of a pixmap.
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*/
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int maxX;
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/**
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* maxY controls the Y coordinate limitation for rendering from the card.
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* The driver should never receive a request for rendering beyond maxY
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* in the Y direction from the origin of a pixmap.
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*/
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int maxY;
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/** @} */
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/* private */
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ExaOffscreenArea *offScreenAreas;
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Bool needsSync;
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int lastMarker;
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/** @name Solid
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* @{
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*/
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/**
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* PrepareSolid() sets up the driver for doing a solid fill.
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* @param pPixmap Destination pixmap
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* @param alu raster operation
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* @param planemask write mask for the fill
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* @param fg "foreground" color for the fill
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*
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* This call should set up the driver for doing a series of solid fills
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* through the Solid() call. The alu raster op is one of the GX*
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* graphics functions listed in X.h, and typically maps to a similar
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* single-byte "ROP" setting in all hardware. The planemask controls
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* which bits of the destination should be affected, and will only represent
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* the bits up to the depth of pPixmap. The fg is the pixel value of the
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* foreground color referred to in ROP descriptions.
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*
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* Note that many drivers will need to store some of the data in the driver
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* private record, for sending to the hardware with each drawing command.
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*
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* The PrepareSolid() call is required of all drivers, but it may fail for any
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* reason. Failure results in a fallback to software rendering.
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*/
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Bool (*PrepareSolid) (PixmapPtr pPixmap,
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int alu,
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Pixel planemask,
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Pixel fg);
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/**
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* Solid() performs a solid fill set up in the last PrepareSolid() call.
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*
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* @param pPixmap destination pixmap
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* @param x1 left coordinate
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* @param y1 top coordinate
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* @param x2 right coordinate
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* @param y2 bottom coordinate
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*
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* Performs the fill set up by the last PrepareSolid() call, covering the
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* area from (x1,y1) to (x2,y2) in pPixmap. Note that the coordinates are
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* in the coordinate space of the destination pixmap, so the driver will
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* need to set up the hardware's offset and pitch for the destination
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* coordinates according to the pixmap's offset and pitch within
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* framebuffer. This likely means using exaGetPixmapOffset() and
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* exaGetPixmapPitch().
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*
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* This call is required if PrepareSolid() ever succeeds.
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*/
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void (*Solid) (PixmapPtr pPixmap, int x1, int y1, int x2, int y2);
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/**
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* DoneSolid() finishes a set of solid fills.
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*
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* @param pPixmap destination pixmap.
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*
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* The DoneSolid() call is called at the end of a series of consecutive
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* Solid() calls following a successful PrepareSolid(). This allows drivers
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* to finish up emitting drawing commands that were buffered, or clean up
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* state from PrepareSolid().
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*
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* This call is required if PrepareSolid() ever succeeds.
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*/
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void (*DoneSolid) (PixmapPtr pPixmap);
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/** @} */
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/** @name Copy
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* @{
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*/
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/**
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* PrepareCopy() sets up the driver for doing a copy within video
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* memory.
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*
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* @param pSrcPixmap source pixmap
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* @param pDstPixmap destination pixmap
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* @param dx X copy direction
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* @param dy Y copy direction
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* @param alu raster operation
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* @param planemask write mask for the fill
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*
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* This call should set up the driver for doing a series of copies from the
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* the pSrcPixmap to the pDstPixmap. The dx flag will be positive if the
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* hardware should do the copy from the left to the right, and dy will be
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* positive if the copy should be done from the top to the bottom. This
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* is to deal with self-overlapping copies when pSrcPixmap == pDstPixmap.
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* If your hardware can only support blits that are (left to right, top to
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* bottom) or (right to left, bottom to top), then you should set
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* #EXA_TWO_BITBLT_DIRECTIONS, and EXA will break down Copy operations to
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* ones that meet those requirements. The alu raster op is one of the GX*
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* graphics functions listed in X.h, and typically maps to a similar
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* single-byte "ROP" setting in all hardware. The planemask controls which
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* bits of the destination should be affected, and will only represent the
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* bits up to the depth of pPixmap.
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*
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* Note that many drivers will need to store some of the data in the driver
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* private record, for sending to the hardware with each drawing command.
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*
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* The PrepareCopy() call is required of all drivers, but it may fail for any
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* reason. Failure results in a fallback to software rendering.
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*/
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Bool (*PrepareCopy) (PixmapPtr pSrcPixmap,
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PixmapPtr pDstPixmap,
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int dx,
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int dy,
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int alu,
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Pixel planemask);
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/**
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* Copy() performs a copy set up in the last PrepareCopy call.
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*
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* @param pDstPixmap destination pixmap
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* @param srcX source X coordinate
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* @param srcY source Y coordinate
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* @param dstX destination X coordinate
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* @param dstY destination Y coordinate
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* @param width width of the rectangle to be copied
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* @param height height of the rectangle to be copied.
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*
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* Performs the copy set up by the last PrepareCopy() call, copying the
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* rectangle from (srcX, srcY) to (srcX + width, srcY + width) in the source
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* pixmap to the same-sized rectangle at (dstX, dstY) in the destination
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* pixmap. Those rectangles may overlap in memory, if
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* pSrcPixmap == pDstPixmap. Note that this call does not receive the
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* pSrcPixmap as an argument -- if it's needed in this function, it should
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* be stored in the driver private during PrepareCopy(). As with Solid(),
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* the coordinates are in the coordinate space of each pixmap, so the driver
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* will need to set up source and destination pitches and offsets from those
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* pixmaps, probably using exaGetPixmapOffset() and exaGetPixmapPitch().
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*
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* This call is required if PrepareCopy ever succeeds.
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*/
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void (*Copy) (PixmapPtr pDstPixmap,
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int srcX,
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int srcY,
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int dstX,
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int dstY,
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int width,
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int height);
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/**
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* DoneCopy() finishes a set of copies.
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*
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* @param pPixmap destination pixmap.
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*
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* The DoneCopy() call is called at the end of a series of consecutive
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* Copy() calls following a successful PrepareCopy(). This allows drivers
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* to finish up emitting drawing commands that were buffered, or clean up
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* state from PrepareCopy().
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*
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* This call is required if PrepareCopy() ever succeeds.
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*/
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void (*DoneCopy) (PixmapPtr pDstPixmap);
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/** @} */
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/** @name Composite
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* @{
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*/
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/**
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* CheckComposite() checks to see if a composite operation could be
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* accelerated.
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*
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* @param op Render operation
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* @param pSrcPicture source Picture
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* @param pMaskPicture mask picture
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* @param pDstPicture destination Picture
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*
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* The CheckComposite() call checks if the driver could handle acceleration
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* of op with the given source, mask, and destination pictures. This allows
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* drivers to check source and destination formats, supported operations,
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* transformations, and component alpha state, and send operations it can't
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* support to software rendering early on. This avoids costly pixmap
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* migration to the wrong places when the driver can't accelerate
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* operations. Note that because migration hasn't happened, the driver
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* can't know during CheckComposite() what the offsets and pitches of the
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* pixmaps are going to be.
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*
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* See PrepareComposite() for more details on likely issues that drivers
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* will have in accelerating Composite operations.
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*
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* The CheckComposite() call is recommended if PrepareComposite() is
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* implemented, but is not required.
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*/
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Bool (*CheckComposite) (int op,
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PicturePtr pSrcPicture,
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PicturePtr pMaskPicture,
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PicturePtr pDstPicture);
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/**
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* PrepareComposite() sets up the driver for doing a Composite operation
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* described in the Render extension protocol spec.
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*
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* @param op Render operation
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* @param pSrcPicture source Picture
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* @param pMaskPicture mask picture
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* @param pDstPicture destination Picture
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* @param pSrc source pixmap
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* @param pMask mask pixmap
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* @param pDst destination pixmap
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*
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* This call should set up the driver for doing a series of Composite
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* operations, as described in the Render protocol spec, with the given
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* pSrcPicture, pMaskPicture, and pDstPicture. The pSrc, pMask, and
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* pDst are the pixmaps containing the pixel data, and should be used for
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* setting the offset and pitch used for the coordinate spaces for each of
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* the Pictures.
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*
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* Notes on interpreting Picture structures:
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* - The Picture structures will always have a valid pDrawable.
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* - The Picture structures will never have alphaMap set.
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* - The mask Picture (and therefore pMask) may be NULL, in which case the
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* operation is simply src OP dst instead of src IN mask OP dst, and
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* mask coordinates should be ignored.
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* - pMarkPicture may have componentAlpha set, which greatly changes
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* the behavior of the Composite operation. componentAlpha has no effect
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* when set on pSrcPicture or pDstPicture.
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* - The source and mask Pictures may have a transformation set
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* (Picture->transform != NULL), which means that the source coordinates
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* should be transformed by that transformation, resulting in scaling,
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* rotation, etc. The PictureTransformPoint() call can transform
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* coordinates for you. Transforms have no effect on Pictures when used
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* as a destination.
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* - The source and mask pictures may have a filter set. PictFilterNearest
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* and PictFilterBilinear are defined in the Render protocol, but others
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* may be encountered, and must be handled correctly (usually by
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* PrepareComposite failing, and falling back to software). Filters have
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* no effect on Pictures when used as a destination.
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* - The source and mask Pictures may have repeating set, which must be
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* respected. Many chipsets will be unable to support repeating on
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* pixmaps that have a width or height that is not a power of two.
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*
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* If your hardware can't support source pictures (textures) with
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* non-power-of-two pitches, you should set #EXA_OFFSCREEN_ALIGN_POT.
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*
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* Note that many drivers will need to store some of the data in the driver
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* private record, for sending to the hardware with each drawing command.
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*
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* The PrepareComposite() call is not required. However, it is highly
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* recommended for performance of antialiased font rendering and performance
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* of cairo applications. Failure results in a fallback to software
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* rendering.
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*/
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Bool (*PrepareComposite) (int op,
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PicturePtr pSrcPicture,
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PicturePtr pMaskPicture,
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PicturePtr pDstPicture,
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PixmapPtr pSrc,
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PixmapPtr pMask,
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PixmapPtr pDst);
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/**
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* Composite() performs a Composite operation set up in the last
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* PrepareComposite() call.
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*
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* @param pDstPixmap destination pixmap
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* @param srcX source X coordinate
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* @param srcY source Y coordinate
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* @param maskX source X coordinate
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* @param maskY source Y coordinate
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* @param dstX destination X coordinate
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* @param dstY destination Y coordinate
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* @param width destination rectangle width
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* @param height destination rectangle height
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*
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* Performs the Composite operation set up by the last PrepareComposite()
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* call, to the rectangle from (dstX, dstY) to (dstX + width, dstY + height)
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* in the destination Pixmap. Note that if a transformation was set on
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* the source or mask Pictures, the source rectangles may not be the same
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* size as the destination rectangles and filtering. Getting the coordinate
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* transformation right at the subpixel level can be tricky, and rendercheck
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* can test this for you.
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*
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* This call is required if PrepareComposite() ever succeeds.
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*/
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void (*Composite) (PixmapPtr pDst,
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int srcX,
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int srcY,
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int maskX,
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int maskY,
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int dstX,
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int dstY,
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int width,
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int height);
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/**
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* DoneComposite() finishes a set of Composite operations.
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*
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* @param pPixmap destination pixmap.
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*
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* The DoneComposite() call is called at the end of a series of consecutive
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* Composite() calls following a successful PrepareComposite(). This allows
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* drivers to finish up emitting drawing commands that were buffered, or
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* clean up state from PrepareComposite().
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*
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* This call is required if PrepareComposite() ever succeeds.
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*/
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void (*DoneComposite) (PixmapPtr pDst);
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/** @} */
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/**
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* UploadToScreen() loads a rectangle of data from src into pDst.
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*
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* @param pDst destination pixmap
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* @param x destination X coordinate.
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* @param y destination Y coordinate
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* @param width width of the rectangle to be copied
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* @param height height of the rectangle to be copied
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* @param src pointer to the beginning of the source data
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* @param src_pitch pitch (in bytes) of the lines of source data.
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*
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* UploadToScreen() copies data in system memory beginning at src (with
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* pitch src_pitch) into the destination pixmap from (x, y) to
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* (x + width, y + height). This is typically done with hostdata uploads,
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* where the CPU sets up a blit command on the hardware with instructions
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* that the blit data will be fed through some sort of aperture on the card.
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*
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* If UploadToScreen() is performed asynchronously, it is up to the driver
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* to call exaMarkSync(). This is in contrast to most other acceleration
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* calls in EXA.
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*
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* UploadToScreen() can aid in pixmap migration, but is most important for
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* the performance of exaGlyphs() (antialiased font drawing) by allowing
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* pipelining of data uploads, avoiding a sync of the card after each glyph.
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*
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* @return TRUE if the driver successfully uploaded the data. FALSE
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* indicates that EXA should fall back to doing the upload in software.
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*
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* UploadToScreen() is not required, but is recommended if Composite
|
|
* acceleration is supported.
|
|
*/
|
|
Bool (*UploadToScreen) (PixmapPtr pDst,
|
|
int x,
|
|
int y,
|
|
int w,
|
|
int h,
|
|
char *src,
|
|
int src_pitch);
|
|
|
|
/**
|
|
* UploadToScratch() is no longer used and will be removed next time the EXA
|
|
* major version needs to be bumped.
|
|
*/
|
|
Bool (*UploadToScratch) (PixmapPtr pSrc,
|
|
PixmapPtr pDst);
|
|
|
|
/**
|
|
* DownloadFromScreen() loads a rectangle of data from pSrc into dst
|
|
*
|
|
* @param pSrc source pixmap
|
|
* @param x source X coordinate.
|
|
* @param y source Y coordinate
|
|
* @param width width of the rectangle to be copied
|
|
* @param height height of the rectangle to be copied
|
|
* @param dst pointer to the beginning of the destination data
|
|
* @param dst_pitch pitch (in bytes) of the lines of destination data.
|
|
*
|
|
* DownloadFromScreen() copies data from offscreen memory in pSrc from
|
|
* (x, y) to (x + width, y + height), to system memory starting at
|
|
* dst (with pitch dst_pitch). This would usually be done
|
|
* using scatter-gather DMA, supported by a DRM call, or by blitting to AGP
|
|
* and then synchronously reading from AGP. Because the implementation
|
|
* might be synchronous, EXA leaves it up to the driver to call
|
|
* exaMarkSync() if DownloadFromScreen() was asynchronous. This is in
|
|
* contrast to most other acceleration calls in EXA.
|
|
*
|
|
* DownloadFromScreen() can aid in the largest bottleneck in pixmap
|
|
* migration, which is the read from framebuffer when evicting pixmaps from
|
|
* framebuffer memory. Thus, it is highly recommended, even though
|
|
* implementations are typically complicated.
|
|
*
|
|
* @return TRUE if the driver successfully downloaded the data. FALSE
|
|
* indicates that EXA should fall back to doing the download in software.
|
|
*
|
|
* DownloadFromScreen() is not required, but is highly recommended.
|
|
*/
|
|
Bool (*DownloadFromScreen)(PixmapPtr pSrc,
|
|
int x, int y,
|
|
int w, int h,
|
|
char *dst, int dst_pitch);
|
|
|
|
/**
|
|
* MarkSync() requests that the driver mark a synchronization point,
|
|
* returning an driver-defined integer marker which could be requested for
|
|
* synchronization to later in WaitMarker(). This might be used in the
|
|
* future to avoid waiting for full hardware stalls before accessing pixmap
|
|
* data with the CPU, but is not important in the current incarnation of
|
|
* EXA.
|
|
*
|
|
* Note that drivers should call exaMarkSync() when they have done some
|
|
* acceleration, rather than their own MarkSync() handler, as otherwise EXA
|
|
* will be unaware of the driver's acceleration and not sync to it during
|
|
* fallbacks.
|
|
*
|
|
* MarkSync() is optional.
|
|
*/
|
|
int (*MarkSync) (ScreenPtr pScreen);
|
|
|
|
/**
|
|
* WaitMarker() waits for all rendering before the given marker to have
|
|
* completed. If the driver does not implement MarkSync(), marker is
|
|
* meaningless, and all rendering by the hardware should be completed before
|
|
* WaitMarker() returns.
|
|
*
|
|
* Note that drivers should call exaWaitSync() to wait for all acceleration
|
|
* to finish, as otherwise EXA will be unaware of the driver having
|
|
* synchronized, resulting in excessive WaitMarker() calls.
|
|
*
|
|
* WaitMarker() is required of all drivers.
|
|
*/
|
|
void (*WaitMarker) (ScreenPtr pScreen, int marker);
|
|
|
|
/** @{ */
|
|
/**
|
|
* PrepareAccess() is called before CPU access to an offscreen pixmap.
|
|
*
|
|
* @param pPix the pixmap being accessed
|
|
* @param index the index of the pixmap being accessed.
|
|
*
|
|
* PrepareAccess() will be called before CPU access to an offscreen pixmap.
|
|
* This can be used to set up hardware surfaces for byteswapping or
|
|
* untiling, or to adjust the pixmap's devPrivate.ptr for the purpose of
|
|
* making CPU access use a different aperture.
|
|
*
|
|
* The index is one of #EXA_PREPARE_DEST, #EXA_PREPARE_SRC,
|
|
* #EXA_PREPARE_MASK, #EXA_PREPARE_AUX_DEST, #EXA_PREPARE_AUX_SRC, or
|
|
* #EXA_PREPARE_AUX_MASK. Since only up to #EXA_NUM_PREPARE_INDICES pixmaps
|
|
* will have PrepareAccess() called on them per operation, drivers can have
|
|
* a small, statically-allocated space to maintain state for PrepareAccess()
|
|
* and FinishAccess() in. Note that PrepareAccess() is only called once per
|
|
* pixmap and operation, regardless of whether the pixmap is used as a
|
|
* destination and/or source, and the index may not reflect the usage.
|
|
*
|
|
* PrepareAccess() may fail. An example might be the case of hardware that
|
|
* can set up 1 or 2 surfaces for CPU access, but not 3. If PrepareAccess()
|
|
* fails, EXA will migrate the pixmap to system memory.
|
|
* DownloadFromScreen() must be implemented and must not fail if a driver
|
|
* wishes to fail in PrepareAccess(). PrepareAccess() must not fail when
|
|
* pPix is the visible screen, because the visible screen can not be
|
|
* migrated.
|
|
*
|
|
* @return TRUE if PrepareAccess() successfully prepared the pixmap for CPU
|
|
* drawing.
|
|
* @return FALSE if PrepareAccess() is unsuccessful and EXA should use
|
|
* DownloadFromScreen() to migate the pixmap out.
|
|
*/
|
|
Bool (*PrepareAccess)(PixmapPtr pPix, int index);
|
|
|
|
/**
|
|
* FinishAccess() is called after CPU access to an offscreen pixmap.
|
|
*
|
|
* @param pPix the pixmap being accessed
|
|
* @param index the index of the pixmap being accessed.
|
|
*
|
|
* FinishAccess() will be called after finishing CPU access of an offscreen
|
|
* pixmap set up by PrepareAccess(). Note that the FinishAccess() will not be
|
|
* called if PrepareAccess() failed and the pixmap was migrated out.
|
|
*/
|
|
void (*FinishAccess)(PixmapPtr pPix, int index);
|
|
|
|
/**
|
|
* PixmapIsOffscreen() is an optional driver replacement to
|
|
* exaPixmapHasGpuCopy(). Set to NULL if you want the standard behaviour
|
|
* of exaPixmapHasGpuCopy().
|
|
*
|
|
* @param pPix the pixmap
|
|
* @return TRUE if the given drawable is in framebuffer memory.
|
|
*
|
|
* exaPixmapHasGpuCopy() is used to determine if a pixmap is in offscreen
|
|
* memory, meaning that acceleration could probably be done to it, and that it
|
|
* will need to be wrapped by PrepareAccess()/FinishAccess() when accessing it
|
|
* with the CPU.
|
|
*
|
|
*
|
|
*/
|
|
Bool (*PixmapIsOffscreen)(PixmapPtr pPix);
|
|
|
|
/** @name PrepareAccess() and FinishAccess() indices
|
|
* @{
|
|
*/
|
|
/**
|
|
* EXA_PREPARE_DEST is the index for a pixmap that may be drawn to or
|
|
* read from.
|
|
*/
|
|
#define EXA_PREPARE_DEST 0
|
|
/**
|
|
* EXA_PREPARE_SRC is the index for a pixmap that may be read from
|
|
*/
|
|
#define EXA_PREPARE_SRC 1
|
|
/**
|
|
* EXA_PREPARE_SRC is the index for a second pixmap that may be read
|
|
* from.
|
|
*/
|
|
#define EXA_PREPARE_MASK 2
|
|
/**
|
|
* EXA_PREPARE_AUX* are additional indices for other purposes, e.g.
|
|
* separate alpha maps with Composite operations.
|
|
*/
|
|
#define EXA_PREPARE_AUX_DEST 3
|
|
#define EXA_PREPARE_AUX_SRC 4
|
|
#define EXA_PREPARE_AUX_MASK 5
|
|
#define EXA_NUM_PREPARE_INDICES 6
|
|
/** @} */
|
|
|
|
/**
|
|
* maxPitchPixels controls the pitch limitation for rendering from
|
|
* the card.
|
|
* The driver should never receive a request for rendering a pixmap
|
|
* that has a pitch (in pixels) beyond maxPitchPixels.
|
|
*
|
|
* Setting this field is optional -- if your hardware doesn't have
|
|
* a pitch limitation in pixels, don't set this. If neither this value
|
|
* nor maxPitchBytes is set, then maxPitchPixels is set to maxX.
|
|
* If set, it must not be smaller than maxX.
|
|
*
|
|
* @sa maxPitchBytes
|
|
*/
|
|
int maxPitchPixels;
|
|
|
|
/**
|
|
* maxPitchBytes controls the pitch limitation for rendering from
|
|
* the card.
|
|
* The driver should never receive a request for rendering a pixmap
|
|
* that has a pitch (in bytes) beyond maxPitchBytes.
|
|
*
|
|
* Setting this field is optional -- if your hardware doesn't have
|
|
* a pitch limitation in bytes, don't set this.
|
|
* If set, it must not be smaller than maxX * 4.
|
|
* There's no default value for maxPitchBytes.
|
|
*
|
|
* @sa maxPitchPixels
|
|
*/
|
|
int maxPitchBytes;
|
|
|
|
/* Hooks to allow driver to its own pixmap memory management */
|
|
void *(*CreatePixmap)(ScreenPtr pScreen, int size, int align);
|
|
void (*DestroyPixmap)(ScreenPtr pScreen, void *driverPriv);
|
|
/**
|
|
* Returning a pixmap with non-NULL devPrivate.ptr implies a pixmap which is
|
|
* not offscreen, which will never be accelerated and Prepare/FinishAccess won't
|
|
* be called.
|
|
*/
|
|
Bool (*ModifyPixmapHeader)(PixmapPtr pPixmap, int width, int height,
|
|
int depth, int bitsPerPixel, int devKind,
|
|
pointer pPixData);
|
|
|
|
/* hooks for drivers with tiling support:
|
|
* driver MUST fill out new_fb_pitch with valid pitch of pixmap
|
|
*/
|
|
void *(*CreatePixmap2)(ScreenPtr pScreen, int width, int height,
|
|
int depth, int usage_hint, int bitsPerPixel,
|
|
int *new_fb_pitch);
|
|
/** @} */
|
|
} ExaDriverRec, *ExaDriverPtr;
|
|
|
|
/** @name EXA driver flags
|
|
* @{
|
|
*/
|
|
/**
|
|
* EXA_OFFSCREEN_PIXMAPS indicates to EXA that the driver can support
|
|
* offscreen pixmaps.
|
|
*/
|
|
#define EXA_OFFSCREEN_PIXMAPS (1 << 0)
|
|
|
|
/**
|
|
* EXA_OFFSCREEN_ALIGN_POT indicates to EXA that the driver needs pixmaps
|
|
* to have a power-of-two pitch.
|
|
*/
|
|
#define EXA_OFFSCREEN_ALIGN_POT (1 << 1)
|
|
|
|
/**
|
|
* EXA_TWO_BITBLT_DIRECTIONS indicates to EXA that the driver can only
|
|
* support copies that are (left-to-right, top-to-bottom) or
|
|
* (right-to-left, bottom-to-top).
|
|
*/
|
|
#define EXA_TWO_BITBLT_DIRECTIONS (1 << 2)
|
|
|
|
/**
|
|
* EXA_HANDLES_PIXMAPS indicates to EXA that the driver can handle
|
|
* all pixmap addressing and migration.
|
|
*/
|
|
#define EXA_HANDLES_PIXMAPS (1 << 3)
|
|
|
|
/**
|
|
* EXA_SUPPORTS_PREPARE_AUX indicates to EXA that the driver can handle the
|
|
* EXA_PREPARE_AUX* indices in the Prepare/FinishAccess hooks. If there are no
|
|
* such hooks, this flag has no effect.
|
|
*/
|
|
#define EXA_SUPPORTS_PREPARE_AUX (1 << 4)
|
|
|
|
/**
|
|
* EXA_SUPPORTS_OFFSCREEN_OVERLAPS indicates to EXA that the driver Copy hooks
|
|
* can handle the source and destination occupying overlapping offscreen memory
|
|
* areas. This allows the offscreen memory defragmentation code to defragment
|
|
* areas where the defragmented position overlaps the fragmented position.
|
|
*
|
|
* Typically this is supported by traditional 2D engines but not by 3D engines.
|
|
*/
|
|
#define EXA_SUPPORTS_OFFSCREEN_OVERLAPS (1 << 5)
|
|
|
|
/**
|
|
* EXA_MIXED_PIXMAPS will hide unacceleratable pixmaps from drivers and manage the
|
|
* problem known software fallbacks like trapezoids. This only migrates pixmaps one way
|
|
* into a driver pixmap and then pins it.
|
|
*/
|
|
#define EXA_MIXED_PIXMAPS (1 << 6)
|
|
|
|
/** @} */
|
|
|
|
/* in exa.c */
|
|
extern _X_EXPORT ExaDriverPtr
|
|
exaDriverAlloc(void);
|
|
|
|
extern _X_EXPORT Bool
|
|
exaDriverInit(ScreenPtr pScreen,
|
|
ExaDriverPtr pScreenInfo);
|
|
|
|
extern _X_EXPORT void
|
|
exaDriverFini(ScreenPtr pScreen);
|
|
|
|
extern _X_EXPORT void
|
|
exaMarkSync(ScreenPtr pScreen);
|
|
extern _X_EXPORT void
|
|
exaWaitSync(ScreenPtr pScreen);
|
|
|
|
extern _X_EXPORT unsigned long
|
|
exaGetPixmapOffset(PixmapPtr pPix);
|
|
|
|
extern _X_EXPORT unsigned long
|
|
exaGetPixmapPitch(PixmapPtr pPix);
|
|
|
|
extern _X_EXPORT unsigned long
|
|
exaGetPixmapSize(PixmapPtr pPix);
|
|
|
|
extern _X_EXPORT void *
|
|
exaGetPixmapDriverPrivate(PixmapPtr p);
|
|
|
|
|
|
/* in exa_offscreen.c */
|
|
extern _X_EXPORT ExaOffscreenArea *
|
|
exaOffscreenAlloc(ScreenPtr pScreen, int size, int align,
|
|
Bool locked,
|
|
ExaOffscreenSaveProc save,
|
|
pointer privData);
|
|
|
|
extern _X_EXPORT ExaOffscreenArea *
|
|
exaOffscreenFree(ScreenPtr pScreen, ExaOffscreenArea *area);
|
|
|
|
extern _X_EXPORT void
|
|
ExaOffscreenMarkUsed (PixmapPtr pPixmap);
|
|
|
|
extern _X_EXPORT void
|
|
exaEnableDisableFBAccess (int index, Bool enable);
|
|
|
|
extern _X_EXPORT Bool
|
|
exaDrawableIsOffscreen (DrawablePtr pDrawable);
|
|
|
|
/* in exa.c */
|
|
extern _X_EXPORT void
|
|
exaMoveInPixmap (PixmapPtr pPixmap);
|
|
|
|
extern _X_EXPORT void
|
|
exaMoveOutPixmap (PixmapPtr pPixmap);
|
|
|
|
|
|
/* in exa_unaccel.c */
|
|
extern _X_EXPORT CARD32
|
|
exaGetPixmapFirstPixel (PixmapPtr pPixmap);
|
|
|
|
|
|
/**
|
|
* Returns TRUE if the given planemask covers all the significant bits in the
|
|
* pixel values for pDrawable.
|
|
*/
|
|
#define EXA_PM_IS_SOLID(_pDrawable, _pm) \
|
|
(((_pm) & FbFullMask((_pDrawable)->depth)) == \
|
|
FbFullMask((_pDrawable)->depth))
|
|
|
|
#endif /* EXA_H */
|