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/**************************************************************************
*
* Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
*
**************************************************************************/
/*
* Authors: Keith Whitwell <keithw-at-tungstengraphics-dot-com>
*/
#include <stdlib.h>
#include <xf86drm.h>
#include "dri_bufpool.h"
#include "dri_bufmgr.h"
#include "intel_context.h"
#include "intel_winsys.h"
#include "intel_swapbuffers.h"
#include "intel_batchbuffer.h"
#include "pipe/p_winsys.h"
#include "pipe/p_defines.h"
#include "pipe/p_state.h"
#include "pipe/p_util.h"
struct intel_pipe_winsys {
struct pipe_winsys winsys;
struct _DriBufferPool *regionPool;
};
/* Turn a pipe winsys into an intel/pipe winsys:
*/
static inline struct intel_pipe_winsys *
intel_pipe_winsys( struct pipe_winsys *winsys )
{
return (struct intel_pipe_winsys *)winsys;
}
/* Most callbacks map direcly onto dri_bufmgr operations:
*/
static void *intel_buffer_map(struct pipe_winsys *winsys,
struct pipe_buffer_handle *buf,
unsigned flags )
{
unsigned drm_flags = 0;
if (flags & PIPE_BUFFER_FLAG_WRITE)
drm_flags |= DRM_BO_FLAG_WRITE;
if (flags & PIPE_BUFFER_FLAG_READ)
drm_flags |= DRM_BO_FLAG_READ;
return driBOMap( dri_bo(buf), drm_flags, 0 );
}
static void intel_buffer_unmap(struct pipe_winsys *winsys,
struct pipe_buffer_handle *buf)
{
driBOUnmap( dri_bo(buf) );
}
static void
intel_buffer_reference(struct pipe_winsys *winsys,
struct pipe_buffer_handle **ptr,
struct pipe_buffer_handle *buf)
{
if (*ptr) {
driBOUnReference( dri_bo(*ptr) );
*ptr = NULL;
}
if (buf) {
driBOReference( dri_bo(buf) );
*ptr = buf;
}
}
/* Grabs the hardware lock!
*/
static int intel_buffer_data(struct pipe_winsys *winsys,
struct pipe_buffer_handle *buf,
unsigned size, const void *data,
unsigned usage )
{
driBOData( dri_bo(buf), size, data, 0 );
return 0;
}
static int intel_buffer_subdata(struct pipe_winsys *winsys,
struct pipe_buffer_handle *buf,
unsigned long offset,
unsigned long size,
const void *data)
{
driBOSubData( dri_bo(buf), offset, size, data );
return 0;
}
static int intel_buffer_get_subdata(struct pipe_winsys *winsys,
struct pipe_buffer_handle *buf,
unsigned long offset,
unsigned long size,
void *data)
{
driBOGetSubData( dri_bo(buf), offset, size, data );
return 0;
}
/* Pipe has no concept of pools. We choose the tex/region pool
* for all buffers.
*/
static struct pipe_buffer_handle *
intel_buffer_create(struct pipe_winsys *winsys,
unsigned alignment,
unsigned flags,
unsigned hint )
{
struct _DriBufferObject *buffer;
struct intel_pipe_winsys *iws = intel_pipe_winsys(winsys);
driGenBuffers( iws->regionPool,
"pipe buffer", 1, &buffer, alignment, flags, hint );
return pipe_bo(buffer);
}
static struct pipe_buffer_handle *
intel_user_buffer_create(struct pipe_winsys *winsys, void *ptr, unsigned bytes)
{
struct _DriBufferObject *buffer;
struct intel_pipe_winsys *iws = intel_pipe_winsys(winsys);
driGenUserBuffer( iws->regionPool,
"pipe user buffer", &buffer, ptr, bytes);
return pipe_bo(buffer);
}
/* The state tracker (should!) keep track of whether the fake
* frontbuffer has been touched by any rendering since the last time
* we copied its contents to the real frontbuffer. Our task is easy:
*/
static void
intel_flush_frontbuffer( struct pipe_winsys *winsys,
struct pipe_surface *surf,
void *context_private)
{
struct intel_context *intel = (struct intel_context *) context_private;
__DRIdrawablePrivate *dPriv = intel->driDrawable;
intelDisplaySurface(dPriv, surf, NULL);
}
static struct pipe_surface *
intel_i915_surface_alloc(struct pipe_winsys *winsys)
{
struct pipe_surface *surf = CALLOC_STRUCT(pipe_surface);
if (surf) {
surf->refcount = 1;
surf->winsys = winsys;
}
return surf;
}
/**
* Round n up to next multiple.
*/
static INLINE unsigned
round_up(unsigned n, unsigned multiple)
{
return (n + multiple - 1) & ~(multiple - 1);
}
/**
* Copied from xm_winsys.c
*/
static int
intel_i915_surface_alloc_storage(struct pipe_winsys *winsys,
struct pipe_surface *surf,
unsigned width, unsigned height,
enum pipe_format format,
unsigned flags)
{
const unsigned alignment = 64;
int ret;
surf->width = width;
surf->height = height;
surf->format = format;
surf->cpp = pf_get_size(format);
surf->pitch = round_up(width, alignment / surf->cpp);
assert(!surf->buffer);
surf->buffer = winsys->buffer_create(winsys, alignment, 0, 0);
if(!surf->buffer)
return -1;
ret = winsys->buffer_data(winsys,
surf->buffer,
surf->pitch * surf->cpp * height,
NULL,
PIPE_BUFFER_USAGE_PIXEL);
if(ret) {
winsys->buffer_reference(winsys, &surf->buffer, NULL);
return ret;
}
return 0;
}
static void
intel_i915_surface_release(struct pipe_winsys *winsys, struct pipe_surface **s)
{
struct pipe_surface *surf = *s;
surf->refcount--;
if (surf->refcount == 0) {
if (surf->buffer)
winsys->buffer_reference(winsys, &surf->buffer, NULL);
free(surf);
}
*s = NULL;
}
static void
intel_printf( struct pipe_winsys *winsys, const char *fmtString, ... )
{
va_list args;
va_start( args, fmtString );
vfprintf(stderr, fmtString, args);
va_end( args );
}
static const char *
intel_get_name( struct pipe_winsys *winsys )
{
return "Intel/DRI/ttm";
}
struct pipe_winsys *
intel_create_pipe_winsys( int fd )
{
struct intel_pipe_winsys *iws = CALLOC_STRUCT( intel_pipe_winsys );
/* Fill in this struct with callbacks that pipe will need to
* communicate with the window system, buffer manager, etc.
*
* Pipe would be happy with a malloc based memory manager, but
* the SwapBuffers implementation in this winsys driver requires
* that rendering be done to an appropriate _DriBufferObject.
*/
iws->winsys.buffer_create = intel_buffer_create;
iws->winsys.user_buffer_create = intel_user_buffer_create;
iws->winsys.buffer_map = intel_buffer_map;
iws->winsys.buffer_unmap = intel_buffer_unmap;
iws->winsys.buffer_reference = intel_buffer_reference;
iws->winsys.buffer_data = intel_buffer_data;
iws->winsys.buffer_subdata = intel_buffer_subdata;
iws->winsys.buffer_get_subdata = intel_buffer_get_subdata;
iws->winsys.flush_frontbuffer = intel_flush_frontbuffer;
iws->winsys.printf = intel_printf;
iws->winsys.get_name = intel_get_name;
iws->winsys.surface_alloc = intel_i915_surface_alloc;
iws->winsys.surface_alloc_storage = intel_i915_surface_alloc_storage;
iws->winsys.surface_release = intel_i915_surface_release;
if (fd)
iws->regionPool = driDRMPoolInit(fd);
return &iws->winsys;
}
void
intel_destroy_pipe_winsys( struct pipe_winsys *winsys )
{
struct intel_pipe_winsys *iws = intel_pipe_winsys(winsys);
if (iws->regionPool) {
driPoolTakeDown(iws->regionPool);
}
free(iws);
}
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