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/**************************************************************************
*
* Copyright © 2009 Jakob Bornecrantz
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#ifndef BRW_WINSYS_H
#define BRW_WINSYS_H
#include "pipe/p_compiler.h"
struct brw_winsys;
struct pipe_fence_handle;
/* Not sure why the winsys needs this:
*/
#define BRW_BATCH_SIZE (32*1024)
/* Need a tiny bit of information inside the abstract buffer struct:
*/
struct brw_winsys_buffer {
unsigned *offset;
unsigned size;
};
/* Describe the usage of a particular buffer in a relocation. The DRM
* winsys will translate these back to GEM read/write domain flags.
*/
enum brw_buffer_usage {
BRW_USAGE_STATE, /* INSTRUCTION, 0 */
BRW_USAGE_QUERY_RESULT, /* INSTRUCTION, INSTRUCTION */
BRW_USAGE_RENDER_TARGET, /* RENDER, 0 */
BRW_USAGE_DEPTH_BUFFER, /* RENDER, RENDER */
BRW_USAGE_BLIT_SOURCE, /* RENDER, 0 */
BRW_USAGE_BLIT_DEST, /* RENDER, RENDER */
BRW_USAGE_SAMPLER, /* SAMPLER, 0 */
BRW_USAGE_VERTEX, /* VERTEX, 0 */
BRW_USAGE_SCRATCH, /* 0, 0 */
BRW_USAGE_MAX
};
/* Should be possible to validate usages above against buffer creation
* types, below:
*/
enum brw_buffer_type
{
BRW_BUFFER_TYPE_TEXTURE,
BRW_BUFFER_TYPE_SCANOUT, /**< a texture used for scanning out from */
BRW_BUFFER_TYPE_VERTEX,
BRW_BUFFER_TYPE_CURBE,
BRW_BUFFER_TYPE_QUERY,
BRW_BUFFER_TYPE_SHADER_CONSTANTS,
BRW_BUFFER_TYPE_SHADER_SCRATCH,
BRW_BUFFER_TYPE_BATCH,
BRW_BUFFER_TYPE_STATE_CACHE,
BRW_BUFFER_TYPE_PIXEL, /* image uploads, pbo's, etc */
BRW_BUFFER_TYPE_GENERIC, /* unknown */
BRW_BUFFER_TYPE_MAX /* Count of possible values */
};
struct brw_winsys_screen {
/**
* Buffer functions.
*/
/*@{*/
/**
* Create a buffer.
*/
struct brw_winsys_buffer *(*bo_alloc)( struct brw_winsys_screen *sws,
enum brw_buffer_type type,
unsigned size,
unsigned alignment );
/* Reference and unreference buffers:
*/
void (*bo_reference)( struct brw_winsys_buffer *buffer );
void (*bo_unreference)( struct brw_winsys_buffer *buffer );
/* delta -- added to b2->offset, and written into buffer
* offset -- location above value is written to within buffer
*/
int (*bo_emit_reloc)( struct brw_winsys_buffer *buffer,
enum brw_buffer_usage usage,
unsigned delta,
unsigned offset,
struct brw_winsys_buffer *b2);
int (*bo_exec)( struct brw_winsys_buffer *buffer,
unsigned bytes_used );
int (*bo_subdata)(struct brw_winsys_buffer *buffer,
size_t offset,
size_t size,
const void *data);
boolean (*bo_is_busy)(struct brw_winsys_buffer *buffer);
boolean (*bo_references)(struct brw_winsys_buffer *a,
struct brw_winsys_buffer *b);
/* XXX: couldn't this be handled by returning true/false on
* bo_emit_reloc?
*/
boolean (*check_aperture_space)( struct brw_winsys_screen *iws,
struct brw_winsys_buffer **buffers,
unsigned count );
/**
* Map a buffer.
*/
void *(*bo_map)(struct brw_winsys_buffer *buffer,
boolean write);
/**
* Unmap a buffer.
*/
void (*bo_unmap)(struct brw_winsys_buffer *buffer);
/*@}*/
/**
* Destroy the winsys.
*/
void (*destroy)(struct brw_winsys_screen *iws);
};
/**
* Create brw pipe_screen.
*/
struct pipe_screen *brw_create_screen(struct brw_winsys_screen *iws, unsigned pci_id);
/**
* Create a brw pipe_context.
*/
struct pipe_context *brw_create_context(struct pipe_screen *screen);
/**
* Get the brw_winsys buffer backing the texture.
*
* TODO UGLY
*/
struct pipe_texture;
boolean brw_texture_get_winsys_buffer(struct pipe_texture *texture,
struct brw_winsys_buffer **buffer,
unsigned *stride);
/**
* Wrap a brw_winsys buffer with a texture blanket.
*
* TODO UGLY
*/
struct pipe_texture *
brw_texture_blanket_winsys_buffer(struct pipe_screen *screen,
const struct pipe_texture *template,
const unsigned pitch,
struct brw_winsys_buffer *buffer);
#endif
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