151 lines
4.0 KiB
C
151 lines
4.0 KiB
C
/**************************************************************************
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*
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* Copyright 2009 VMware, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#include "util/u_memory.h"
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#include "util/u_math.h"
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#include "lp_winsys.h"
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#include "lp_screen.h"
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#include "lp_texture.h"
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#include "lp_buffer.h"
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static void *
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llvmpipe_buffer_map(struct pipe_screen *screen,
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struct pipe_buffer *buf,
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unsigned flags)
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{
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struct llvmpipe_buffer *llvmpipe_buf = llvmpipe_buffer(buf);
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return llvmpipe_buf->data;
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}
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static void
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llvmpipe_buffer_unmap(struct pipe_screen *screen,
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struct pipe_buffer *buf)
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{
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}
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static void
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llvmpipe_buffer_destroy(struct pipe_buffer *buf)
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{
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struct llvmpipe_buffer *sbuf = llvmpipe_buffer(buf);
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if (!sbuf->userBuffer)
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align_free(sbuf->data);
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FREE(sbuf);
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}
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static struct pipe_buffer *
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llvmpipe_buffer_create(struct pipe_screen *screen,
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unsigned alignment,
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unsigned usage,
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unsigned size)
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{
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struct llvmpipe_buffer *buffer = CALLOC_STRUCT(llvmpipe_buffer);
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pipe_reference_init(&buffer->base.reference, 1);
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buffer->base.screen = screen;
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buffer->base.alignment = MAX2(alignment, 16);
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buffer->base.usage = usage;
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buffer->base.size = size;
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buffer->data = align_malloc(size, alignment);
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return &buffer->base;
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}
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/**
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* Create buffer which wraps user-space data.
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*/
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static struct pipe_buffer *
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llvmpipe_user_buffer_create(struct pipe_screen *screen,
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void *ptr,
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unsigned bytes)
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{
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struct llvmpipe_buffer *buffer;
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buffer = CALLOC_STRUCT(llvmpipe_buffer);
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if(!buffer)
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return NULL;
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pipe_reference_init(&buffer->base.reference, 1);
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buffer->base.screen = screen;
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buffer->base.size = bytes;
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buffer->userBuffer = TRUE;
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buffer->data = ptr;
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return &buffer->base;
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}
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static void
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llvmpipe_fence_reference(struct pipe_screen *screen,
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struct pipe_fence_handle **ptr,
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struct pipe_fence_handle *fence)
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{
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}
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static int
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llvmpipe_fence_signalled(struct pipe_screen *screen,
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struct pipe_fence_handle *fence,
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unsigned flag)
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{
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return 0;
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}
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static int
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llvmpipe_fence_finish(struct pipe_screen *screen,
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struct pipe_fence_handle *fence,
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unsigned flag)
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{
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return 0;
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}
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void
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llvmpipe_init_screen_buffer_funcs(struct pipe_screen *screen)
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{
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screen->buffer_create = llvmpipe_buffer_create;
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screen->user_buffer_create = llvmpipe_user_buffer_create;
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screen->buffer_map = llvmpipe_buffer_map;
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screen->buffer_unmap = llvmpipe_buffer_unmap;
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screen->buffer_destroy = llvmpipe_buffer_destroy;
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screen->fence_reference = llvmpipe_fence_reference;
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screen->fence_signalled = llvmpipe_fence_signalled;
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screen->fence_finish = llvmpipe_fence_finish;
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}
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