diff options
Diffstat (limited to 'src/gallium/drivers/svga/svga_pipe_query.c')
-rw-r--r-- | src/gallium/drivers/svga/svga_pipe_query.c | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/src/gallium/drivers/svga/svga_pipe_query.c b/src/gallium/drivers/svga/svga_pipe_query.c new file mode 100644 index 0000000..01336b0 --- /dev/null +++ b/src/gallium/drivers/svga/svga_pipe_query.c @@ -0,0 +1,267 @@ +/********************************************************** + * Copyright 2008-2009 VMware, Inc. 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, 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 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. + * + **********************************************************/ + +#include "pipe/p_state.h" +#include "pipe/p_context.h" +#include "util/u_memory.h" + +#include "svga_cmd.h" +#include "svga_context.h" +#include "svga_screen.h" +#include "svga_screen_buffer.h" +#include "svga_winsys.h" +#include "svga_draw.h" +#include "svga_debug.h" + + +/* Fixme: want a public base class for all pipe structs, even if there + * isn't much in them. + */ +struct pipe_query { + int dummy; +}; + +struct svga_query { + struct pipe_query base; + SVGA3dQueryType type; + struct svga_winsys_buffer *hwbuf; + volatile SVGA3dQueryResult *queryResult; + struct pipe_fence_handle *fence; +}; + +/*********************************************************************** + * Inline conversion functions. These are better-typed than the + * macros used previously: + */ +static INLINE struct svga_query * +svga_query( struct pipe_query *q ) +{ + return (struct svga_query *)q; +} + +static boolean svga_get_query_result(struct pipe_context *pipe, + struct pipe_query *q, + boolean wait, + uint64_t *result); + +static struct pipe_query *svga_create_query( struct pipe_context *pipe, + unsigned query_type ) +{ + struct svga_screen *svgascreen = svga_screen(pipe->screen); + struct svga_winsys_screen *sws = svgascreen->sws; + struct svga_query *sq; + + SVGA_DBG(DEBUG_QUERY, "%s\n", __FUNCTION__); + + sq = CALLOC_STRUCT(svga_query); + if (!sq) + goto no_sq; + + sq->type = SVGA3D_QUERYTYPE_OCCLUSION; + + sq->hwbuf = svga_winsys_buffer_create(svgascreen, + 1, + SVGA_BUFFER_USAGE_PINNED, + sizeof *sq->queryResult); + if(!sq->hwbuf) + goto no_hwbuf; + + sq->queryResult = (SVGA3dQueryResult *)sws->buffer_map(sws, + sq->hwbuf, + PIPE_BUFFER_USAGE_CPU_WRITE); + if(!sq->queryResult) + goto no_query_result; + + sq->queryResult->totalSize = sizeof *sq->queryResult; + sq->queryResult->state = SVGA3D_QUERYSTATE_NEW; + + /* + * We request the buffer to be pinned and assume it is always mapped. + * + * The reason is that we don't want to wait for fences when checking the + * query status. + */ + sws->buffer_unmap(sws, sq->hwbuf); + + return &sq->base; + +no_query_result: + sws->buffer_destroy(sws, sq->hwbuf); +no_hwbuf: + FREE(sq); +no_sq: + return NULL; +} + +static void svga_destroy_query(struct pipe_context *pipe, + struct pipe_query *q) +{ + struct svga_screen *svgascreen = svga_screen(pipe->screen); + struct svga_winsys_screen *sws = svgascreen->sws; + struct svga_query *sq = svga_query( q ); + + SVGA_DBG(DEBUG_QUERY, "%s\n", __FUNCTION__); + sws->buffer_destroy(sws, sq->hwbuf); + sws->fence_reference(sws, &sq->fence, NULL); + FREE(sq); +} + +static void svga_begin_query(struct pipe_context *pipe, + struct pipe_query *q) +{ + struct svga_screen *svgascreen = svga_screen(pipe->screen); + struct svga_winsys_screen *sws = svgascreen->sws; + struct svga_context *svga = svga_context( pipe ); + struct svga_query *sq = svga_query( q ); + enum pipe_error ret; + + SVGA_DBG(DEBUG_QUERY, "%s\n", __FUNCTION__); + + assert(!svga->sq); + + /* Need to flush out buffered drawing commands so that they don't + * get counted in the query results. + */ + svga_hwtnl_flush_retry(svga); + + if(sq->queryResult->state == SVGA3D_QUERYSTATE_PENDING) { + /* The application doesn't care for the pending query result. We cannot + * let go the existing buffer and just get a new one because its storage + * may be reused for other purposes and clobbered by the host when it + * determines the query result. So the only option here is to wait for + * the existing query's result -- not a big deal, given that no sane + * application would do this. + */ + uint64_t result; + + svga_get_query_result(pipe, q, TRUE, &result); + + assert(sq->queryResult->state != SVGA3D_QUERYSTATE_PENDING); + } + + sq->queryResult->state = SVGA3D_QUERYSTATE_NEW; + sws->fence_reference(sws, &sq->fence, NULL); + + ret = SVGA3D_BeginQuery(svga->swc, sq->type); + if(ret != PIPE_OK) { + svga_context_flush(svga, NULL); + ret = SVGA3D_BeginQuery(svga->swc, sq->type); + assert(ret == PIPE_OK); + } + + svga->sq = sq; +} + +static void svga_end_query(struct pipe_context *pipe, + struct pipe_query *q) +{ + struct svga_context *svga = svga_context( pipe ); + struct svga_query *sq = svga_query( q ); + enum pipe_error ret; + + SVGA_DBG(DEBUG_QUERY, "%s\n", __FUNCTION__); + assert(svga->sq == sq); + + svga_hwtnl_flush_retry(svga); + + /* Set to PENDING before sending EndQuery. */ + sq->queryResult->state = SVGA3D_QUERYSTATE_PENDING; + + ret = SVGA3D_EndQuery( svga->swc, sq->type, sq->hwbuf); + if(ret != PIPE_OK) { + svga_context_flush(svga, NULL); + ret = SVGA3D_EndQuery( svga->swc, sq->type, sq->hwbuf); + assert(ret == PIPE_OK); + } + + /* TODO: Delay flushing. We don't really need to flush here, just ensure + * that there is one flush before svga_get_query_result attempts to get the + * result */ + svga_context_flush(svga, NULL); + + svga->sq = NULL; +} + +static boolean svga_get_query_result(struct pipe_context *pipe, + struct pipe_query *q, + boolean wait, + uint64_t *result) +{ + struct svga_context *svga = svga_context( pipe ); + struct svga_screen *svgascreen = svga_screen( pipe->screen ); + struct svga_winsys_screen *sws = svgascreen->sws; + struct svga_query *sq = svga_query( q ); + SVGA3dQueryState state; + + SVGA_DBG(DEBUG_QUERY, "%s wait: %d\n", __FUNCTION__); + + /* The query status won't be updated by the host unless + * SVGA_3D_CMD_WAIT_FOR_QUERY is emitted. Unfortunately this will cause a + * synchronous wait on the host */ + if(!sq->fence) { + enum pipe_error ret; + + ret = SVGA3D_WaitForQuery( svga->swc, sq->type, sq->hwbuf); + if(ret != PIPE_OK) { + svga_context_flush(svga, NULL); + ret = SVGA3D_WaitForQuery( svga->swc, sq->type, sq->hwbuf); + assert(ret == PIPE_OK); + } + + svga_context_flush(svga, &sq->fence); + + assert(sq->fence); + } + + state = sq->queryResult->state; + if(state == SVGA3D_QUERYSTATE_PENDING) { + if(!wait) + return FALSE; + + sws->fence_finish(sws, sq->fence, 0); + + state = sq->queryResult->state; + } + + assert(state == SVGA3D_QUERYSTATE_SUCCEEDED || + state == SVGA3D_QUERYSTATE_FAILED); + + *result = (uint64_t)sq->queryResult->result32; + + SVGA_DBG(DEBUG_QUERY, "%s result %d\n", __FUNCTION__, (unsigned)*result); + + return TRUE; +} + + + +void svga_init_query_functions( struct svga_context *svga ) +{ + svga->pipe.create_query = svga_create_query; + svga->pipe.destroy_query = svga_destroy_query; + svga->pipe.begin_query = svga_begin_query; + svga->pipe.end_query = svga_end_query; + svga->pipe.get_query_result = svga_get_query_result; +} |