+++ /dev/null
-/**************************************************************************
- *
- * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
- * 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 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 NON-INFRINGEMENT.
- * IN NO EVENT SHALL TUNGSTEN GRAPHICS 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.
- *
- **************************************************************************/
-
-/**
- * @file
- * A variation of malloc buffers which get transferred to real graphics memory
- * when there is an attempt to validate them.
- *
- * @author Jose Fonseca <jrfonseca@tungstengraphics.com>
- */
-
-
-#include "pipe/p_debug.h"
-#include "util/u_memory.h"
-#include "pb_buffer.h"
-#include "pb_bufmgr.h"
-
-
-struct pb_ondemand_manager;
-
-
-struct pb_ondemand_buffer
-{
- struct pb_buffer base;
-
- struct pb_ondemand_manager *mgr;
-
- /** Regular malloc'ed memory */
- void *data;
- unsigned mapcount;
-
- /** Real buffer */
- struct pb_buffer *buffer;
- size_t size;
- struct pb_desc desc;
-};
-
-
-struct pb_ondemand_manager
-{
- struct pb_manager base;
-
- struct pb_manager *provider;
-};
-
-
-extern const struct pb_vtbl pb_ondemand_buffer_vtbl;
-
-static INLINE struct pb_ondemand_buffer *
-pb_ondemand_buffer(struct pb_buffer *buf)
-{
- assert(buf);
- assert(buf->vtbl == &pb_ondemand_buffer_vtbl);
- return (struct pb_ondemand_buffer *)buf;
-}
-
-static INLINE struct pb_ondemand_manager *
-pb_ondemand_manager(struct pb_manager *mgr)
-{
- assert(mgr);
- return (struct pb_ondemand_manager *)mgr;
-}
-
-
-static void
-pb_ondemand_buffer_destroy(struct pb_buffer *_buf)
-{
- struct pb_ondemand_buffer *buf = pb_ondemand_buffer(_buf);
-
- pb_reference(&buf->buffer, NULL);
-
- align_free(buf->data);
-
- FREE(buf);
-}
-
-
-static void *
-pb_ondemand_buffer_map(struct pb_buffer *_buf,
- unsigned flags)
-{
- struct pb_ondemand_buffer *buf = pb_ondemand_buffer(_buf);
-
- if(buf->buffer) {
- assert(!buf->data);
- return pb_map(buf->buffer, flags);
- }
- else {
- assert(buf->data);
- ++buf->mapcount;
- return buf->data;
- }
-}
-
-
-static void
-pb_ondemand_buffer_unmap(struct pb_buffer *_buf)
-{
- struct pb_ondemand_buffer *buf = pb_ondemand_buffer(_buf);
-
- if(buf->buffer) {
- assert(!buf->data);
- pb_unmap(buf->buffer);
- }
- else {
- assert(buf->data);
- assert(buf->mapcount);
- if(buf->mapcount)
- --buf->mapcount;
- }
-}
-
-
-static enum pipe_error
-pb_ondemand_buffer_instantiate(struct pb_ondemand_buffer *buf)
-{
- if(!buf->buffer) {
- struct pb_manager *provider = buf->mgr->provider;
- uint8_t *map;
-
- assert(!buf->mapcount);
-
- buf->buffer = provider->create_buffer(provider, buf->size, &buf->desc);
- if(!buf->buffer)
- return PIPE_ERROR_OUT_OF_MEMORY;
-
- map = pb_map(buf->buffer, PIPE_BUFFER_USAGE_CPU_READ);
- if(!map) {
- pb_reference(&buf->buffer, NULL);
- return PIPE_ERROR;
- }
-
- memcpy(map, buf->data, buf->size);
-
- pb_unmap(buf->buffer);
-
- if(!buf->mapcount) {
- FREE(buf->data);
- buf->data = NULL;
- }
- }
-
- return PIPE_OK;
-}
-
-static enum pipe_error
-pb_ondemand_buffer_validate(struct pb_buffer *_buf,
- struct pb_validate *vl,
- unsigned flags)
-{
- struct pb_ondemand_buffer *buf = pb_ondemand_buffer(_buf);
- enum pipe_error ret;
-
- assert(!buf->mapcount);
- if(buf->mapcount)
- return PIPE_ERROR;
-
- ret = pb_ondemand_buffer_instantiate(buf);
- if(ret != PIPE_OK)
- return ret;
-
- return pb_validate(buf->buffer, vl, flags);
-}
-
-
-static void
-pb_ondemand_buffer_fence(struct pb_buffer *_buf,
- struct pipe_fence_handle *fence)
-{
- struct pb_ondemand_buffer *buf = pb_ondemand_buffer(_buf);
-
- assert(buf->buffer);
- if(!buf->buffer)
- return;
-
- pb_fence(buf->buffer, fence);
-}
-
-
-static void
-pb_ondemand_buffer_get_base_buffer(struct pb_buffer *_buf,
- struct pb_buffer **base_buf,
- unsigned *offset)
-{
- struct pb_ondemand_buffer *buf = pb_ondemand_buffer(_buf);
-
- if(pb_ondemand_buffer_instantiate(buf) != PIPE_OK) {
- assert(0);
- *base_buf = &buf->base;
- *offset = 0;
- return;
- }
-
- pb_get_base_buffer(buf->buffer, base_buf, offset);
-}
-
-
-const struct pb_vtbl
-pb_ondemand_buffer_vtbl = {
- pb_ondemand_buffer_destroy,
- pb_ondemand_buffer_map,
- pb_ondemand_buffer_unmap,
- pb_ondemand_buffer_validate,
- pb_ondemand_buffer_fence,
- pb_ondemand_buffer_get_base_buffer
-};
-
-
-static struct pb_buffer *
-pb_ondemand_manager_create_buffer(struct pb_manager *_mgr,
- size_t size,
- const struct pb_desc *desc)
-{
- struct pb_ondemand_manager *mgr = pb_ondemand_manager(_mgr);
- struct pb_ondemand_buffer *buf;
-
- buf = CALLOC_STRUCT(pb_ondemand_buffer);
- if(!buf)
- return NULL;
-
- buf->base.base.refcount = 1;
- buf->base.base.alignment = desc->alignment;
- buf->base.base.usage = desc->usage;
- buf->base.base.size = size;
- buf->base.vtbl = &pb_ondemand_buffer_vtbl;
-
- buf->mgr = mgr;
-
- buf->data = align_malloc(size, desc->alignment < sizeof(void*) ? sizeof(void*) : desc->alignment);
- if(!buf->data) {
- FREE(buf);
- return NULL;
- }
-
- buf->size = size;
- buf->desc = *desc;
-
- return &buf->base;
-}
-
-
-static void
-pb_ondemand_manager_flush(struct pb_manager *_mgr)
-{
- struct pb_ondemand_manager *mgr = pb_ondemand_manager(_mgr);
-
- mgr->provider->flush(mgr->provider);
-}
-
-
-static void
-pb_ondemand_manager_destroy(struct pb_manager *_mgr)
-{
- struct pb_ondemand_manager *mgr = pb_ondemand_manager(_mgr);
-
- FREE(mgr);
-}
-
-
-struct pb_manager *
-pb_ondemand_manager_create(struct pb_manager *provider)
-{
- struct pb_ondemand_manager *mgr;
-
- if(!provider)
- return NULL;
-
- mgr = CALLOC_STRUCT(pb_ondemand_manager);
- if(!mgr)
- return NULL;
-
- mgr->base.destroy = pb_ondemand_manager_destroy;
- mgr->base.create_buffer = pb_ondemand_manager_create_buffer;
- mgr->base.flush = pb_ondemand_manager_flush;
-
- mgr->provider = provider;
-
- return &mgr->base;
-}
projects / platform / upstream / mesa.git / commitdiff