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| /************************************************************************** |
| * |
| * 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 "util/u_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; |
| pb_size 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); |
| if (!buf) |
| return NULL; |
| 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, void *flush_ctx) |
| { |
| struct pb_ondemand_buffer *buf = pb_ondemand_buffer(_buf); |
| |
| if(buf->buffer) { |
| assert(!buf->data); |
| return pb_map(buf->buffer, flags, flush_ctx); |
| } |
| 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, PB_USAGE_CPU_READ, NULL); |
| 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, |
| pb_size *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, |
| pb_size 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; |
| |
| pipe_reference_init(&buf->base.reference, 1); |
| buf->base.alignment = desc->alignment; |
| buf->base.usage = desc->usage; |
| buf->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; |
| } |