/**********************************************************
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* Copyright 2008-2009 VMware, Inc. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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**********************************************************/
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#ifndef SVGA_BUFFER_H
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#define SVGA_BUFFER_H
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#include "pipe/p_compiler.h"
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#include "pipe/p_state.h"
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#include "util/u_transfer.h"
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#include "svga_screen_cache.h"
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#include "svga_screen.h"
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#include "svga_cmd.h"
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#include "svga_context.h"
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/**
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* Maximum number of discontiguous ranges
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*/
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#define SVGA_BUFFER_MAX_RANGES 32
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struct svga_context;
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struct svga_winsys_buffer;
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struct svga_winsys_surface;
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extern struct u_resource_vtbl svga_buffer_vtbl;
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struct svga_buffer_range
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{
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unsigned start;
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unsigned end;
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};
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struct svga_3d_update_gb_image;
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/**
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* This structure describes the bind flags and cache key associated
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* with the host surface.
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*/
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struct svga_buffer_surface
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{
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struct list_head list;
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unsigned bind_flags;
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struct svga_host_surface_cache_key key;
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struct svga_winsys_surface *handle;
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};
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/**
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* SVGA pipe buffer.
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*/
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struct svga_buffer
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{
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struct u_resource b;
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/** This is a superset of b.b.bind */
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unsigned bind_flags;
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/**
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* Regular (non DMA'able) memory.
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*
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* Used for user buffers or for buffers which we know before hand that can
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* never be used by the virtual hardware directly, such as constant buffers.
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*/
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void *swbuf;
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/**
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* Whether swbuf was created by the user or not.
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*/
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boolean user;
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/**
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* Creation key for the host surface handle.
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*
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* This structure describes all the host surface characteristics so that it
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* can be looked up in cache, since creating a host surface is often a slow
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* operation.
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*/
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struct svga_host_surface_cache_key key;
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/**
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* Host surface handle.
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*
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* This is a platform independent abstraction for host SID. We create when
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* trying to bind.
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*
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* Only set for non-user buffers.
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*/
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struct svga_winsys_surface *handle;
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/**
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* List of surfaces created for this buffer resource to support
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* incompatible bind flags.
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*/
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struct list_head surfaces;
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/**
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* Information about ongoing and past map operations.
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*/
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struct {
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/**
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* Number of concurrent mappings.
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*/
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unsigned count;
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/**
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* Dirty ranges.
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*
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* Ranges that were touched by the application and need to be uploaded to
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* the host.
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*
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* This information will be copied into dma.boxes, when emiting the
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* SVGA3dCmdSurfaceDMA command.
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*/
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struct svga_buffer_range ranges[SVGA_BUFFER_MAX_RANGES];
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unsigned num_ranges;
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} map;
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/**
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* Information about uploaded version of user buffers.
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*/
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struct {
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struct pipe_resource *buffer;
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/**
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* We combine multiple user buffers into the same hardware buffer. This
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* is the relative offset within that buffer.
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*/
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unsigned offset;
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/**
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* Range of user buffer that is uploaded in @buffer at @offset.
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*/
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unsigned start;
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unsigned end;
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} uploaded;
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/**
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* DMA'ble memory.
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*
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* A piece of GMR memory, with the same size of the buffer. It is created
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* when mapping the buffer, and will be used to upload vertex data to the
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* host.
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*
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* Only set for non-user buffers.
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*/
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struct svga_winsys_buffer *hwbuf;
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/**
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* Information about pending DMA uploads.
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*
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*/
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struct {
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/**
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* Whether this buffer has an unfinished DMA upload command.
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*
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* If not set then the rest of the information is null.
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*/
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boolean pending;
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SVGA3dSurfaceDMAFlags flags;
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/**
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* Pointer to the DMA copy box *inside* the command buffer.
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*/
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SVGA3dCopyBox *boxes;
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/**
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* Pointer to the sequence of update commands
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* *inside* the command buffer.
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*/
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struct svga_3d_update_gb_image *updates;
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/**
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* Context that has the pending DMA to this buffer.
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*/
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struct svga_context *svga;
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} dma;
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/**
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* Linked list head, used to gather all buffers with pending dma uploads on
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* a context. It is only valid if the dma.pending is set above.
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*/
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struct list_head head;
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unsigned size; /**< Approximate size in bytes */
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boolean dirty; /**< Need to do a readback before mapping? */
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/** In some cases we try to keep the results of the translate_indices()
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* function from svga_draw_elements.c
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*/
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struct {
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enum pipe_prim_type orig_prim, new_prim;
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struct pipe_resource *buffer;
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unsigned index_size;
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unsigned offset; /**< first index */
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unsigned count; /**< num indices */
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} translated_indices;
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};
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static inline struct svga_buffer *
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svga_buffer(struct pipe_resource *resource)
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{
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struct svga_buffer *buf = (struct svga_buffer *) resource;
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assert(buf == NULL || buf->b.vtbl == &svga_buffer_vtbl);
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return buf;
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}
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/**
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* Returns TRUE for user buffers. We may
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* decide to use an alternate upload path for these buffers.
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*/
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static inline boolean
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svga_buffer_is_user_buffer( struct pipe_resource *buffer )
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{
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if (buffer) {
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return svga_buffer(buffer)->user;
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} else {
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return FALSE;
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}
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}
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/**
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* Returns a pointer to a struct svga_winsys_screen given a
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* struct svga_buffer.
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*/
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static inline struct svga_winsys_screen *
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svga_buffer_winsys_screen(struct svga_buffer *sbuf)
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{
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return svga_screen(sbuf->b.b.screen)->sws;
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}
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/**
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* Returns whether a buffer has hardware storage that is
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* visible to the GPU.
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*/
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static inline boolean
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svga_buffer_has_hw_storage(struct svga_buffer *sbuf)
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{
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if (svga_buffer_winsys_screen(sbuf)->have_gb_objects)
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return (sbuf->handle ? TRUE : FALSE);
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else
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return (sbuf->hwbuf ? TRUE : FALSE);
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}
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/**
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* Map the hardware storage of a buffer.
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* \param flags bitmask of PIPE_TRANSFER_* flags
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*/
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static inline void *
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svga_buffer_hw_storage_map(struct svga_context *svga,
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struct svga_buffer *sbuf,
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unsigned flags, boolean *retry)
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{
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struct svga_winsys_screen *sws = svga_buffer_winsys_screen(sbuf);
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svga->hud.num_buffers_mapped++;
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if (sws->have_gb_objects) {
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return svga->swc->surface_map(svga->swc, sbuf->handle, flags, retry);
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} else {
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*retry = FALSE;
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return sws->buffer_map(sws, sbuf->hwbuf, flags);
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}
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}
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/**
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* Unmap the hardware storage of a buffer.
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*/
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static inline void
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svga_buffer_hw_storage_unmap(struct svga_context *svga,
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struct svga_buffer *sbuf)
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{
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struct svga_winsys_screen *sws = svga_buffer_winsys_screen(sbuf);
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if (sws->have_gb_objects) {
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struct svga_winsys_context *swc = svga->swc;
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boolean rebind;
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swc->surface_unmap(swc, sbuf->handle, &rebind);
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if (rebind) {
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enum pipe_error ret;
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ret = SVGA3D_BindGBSurface(swc, sbuf->handle);
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if (ret != PIPE_OK) {
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/* flush and retry */
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svga_context_flush(svga, NULL);
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ret = SVGA3D_BindGBSurface(swc, sbuf->handle);
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assert(ret == PIPE_OK);
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}
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}
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} else
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sws->buffer_unmap(sws, sbuf->hwbuf);
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}
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struct pipe_resource *
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svga_user_buffer_create(struct pipe_screen *screen,
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void *ptr,
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unsigned bytes,
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unsigned usage);
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struct pipe_resource *
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svga_buffer_create(struct pipe_screen *screen,
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const struct pipe_resource *template);
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/**
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* Get the host surface handle for this buffer.
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*
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* This will ensure the host surface is updated, issuing DMAs as needed.
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*
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* NOTE: This may insert new commands in the context, so it *must* be called
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* before reserving command buffer space. And, in order to insert commands
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* it may need to call svga_context_flush().
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*/
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struct svga_winsys_surface *
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svga_buffer_handle(struct svga_context *svga,
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struct pipe_resource *buf,
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unsigned tobind_flags);
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void
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svga_context_flush_buffers(struct svga_context *svga);
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struct svga_winsys_buffer *
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svga_winsys_buffer_create(struct svga_context *svga,
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unsigned alignment,
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unsigned usage,
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unsigned size);
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#endif /* SVGA_BUFFER_H */
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