139 lines
3.8 KiB
C
139 lines
3.8 KiB
C
/**************************************************************************
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*
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* Copyright © 2009 Jakob Bornecrantz
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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 "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is 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 (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#include "util/u_inlines.h"
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#include "util/u_memory.h"
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#include "i915_screen.h"
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#include "i915_buffer.h"
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struct intel_buffer;
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struct i915_buffer
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{
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struct pipe_buffer base;
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struct intel_buffer *ibuf; /** hw buffer */
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void *data; /**< user and malloc data */
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boolean own; /**< we own the data incase of malloc */
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};
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static INLINE struct i915_buffer *
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i915_buffer(struct pipe_buffer *buffer)
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{
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return (struct i915_buffer *)buffer;
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}
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static struct pipe_buffer *
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i915_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 i915_buffer *buf = CALLOC_STRUCT(i915_buffer);
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if (!buf)
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return NULL;
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pipe_reference_init(&buf->base.reference, 1);
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buf->base.alignment = alignment;
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buf->base.screen = screen;
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buf->base.usage = usage;
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buf->base.size = size;
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buf->data = MALLOC(size);
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buf->own = TRUE;
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if (!buf->data)
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goto err;
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return &buf->base;
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err:
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FREE(buf);
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return NULL;
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}
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static struct pipe_buffer *
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i915_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 i915_buffer *buf = CALLOC_STRUCT(i915_buffer);
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if (!buf)
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return NULL;
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pipe_reference_init(&buf->base.reference, 1);
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buf->base.alignment = 0;
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buf->base.screen = screen;
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buf->base.usage = 0;
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buf->base.size = bytes;
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buf->data = ptr;
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buf->own = FALSE;
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return &buf->base;
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}
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static void *
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i915_buffer_map(struct pipe_screen *screen,
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struct pipe_buffer *buffer,
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unsigned usage)
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{
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struct i915_buffer *buf = i915_buffer(buffer);
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assert(!buf->ibuf);
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return buf->data;
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}
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static void
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i915_buffer_unmap(struct pipe_screen *screen,
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struct pipe_buffer *buffer)
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{
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struct i915_buffer *buf = i915_buffer(buffer);
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assert(!buf->ibuf);
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(void) buf;
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}
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static void
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i915_buffer_destroy(struct pipe_buffer *buffer)
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{
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struct i915_buffer *buf = i915_buffer(buffer);
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assert(!buf->ibuf);
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if (buf->own)
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FREE(buf->data);
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FREE(buf);
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}
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void i915_init_screen_buffer_functions(struct i915_screen *screen)
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{
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screen->base.buffer_create = i915_buffer_create;
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screen->base.user_buffer_create = i915_user_buffer_create;
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screen->base.buffer_map = i915_buffer_map;
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screen->base.buffer_map_range = NULL;
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screen->base.buffer_flush_mapped_range = NULL;
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screen->base.buffer_unmap = i915_buffer_unmap;
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screen->base.buffer_destroy = i915_buffer_destroy;
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}
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