diff options
Diffstat (limited to 'src/mesa/drivers/x11/xm_softpipe.c')
| -rw-r--r-- | src/mesa/drivers/x11/xm_softpipe.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/src/mesa/drivers/x11/xm_softpipe.c b/src/mesa/drivers/x11/xm_softpipe.c new file mode 100644 index 0000000000..6e8ef21b50 --- /dev/null +++ b/src/mesa/drivers/x11/xm_softpipe.c @@ -0,0 +1,198 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Bismarck, ND., USA + * 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 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 + * THE COPYRIGHT HOLDERS, AUTHORS 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. + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * + **************************************************************************/ + +/* + * Authors: + * Keith Whitwell + * Brian Paul + */ + + +#include "glxheader.h" +#include "xmesaP.h" +#include "main/macros.h" + +#include "pipe/softpipe/sp_winsys.h" + + +struct xm_softpipe_winsys +{ + struct softpipe_winsys sws; + XMesaContext xmctx; /* not really needed */ +}; + + +struct xm_buffer +{ + int refcount; + void *data; + void *mapped; +}; + + + +/* Turn the softpipe opaque buffer pointer into a dri_bufmgr opaque + * buffer pointer... + */ +static inline struct xm_buffer * +xm_bo( struct pipe_buffer_handle *bo ) +{ + return (struct xm_buffer *)bo; +} + +static inline struct pipe_buffer_handle * +pipe_bo( struct xm_buffer *bo ) +{ + return (struct pipe_buffer_handle *)bo; +} + +/* Turn a softpipe winsys into an xm/softpipe winsys: + */ +static inline struct xm_softpipe_winsys * +xm_softpipe_winsys( struct softpipe_winsys *sws ) +{ + return (struct xm_softpipe_winsys *)sws; +} + + +/* Most callbacks map direcly onto dri_bufmgr operations: + */ +static void *xm_buffer_map(struct softpipe_winsys *sws, + struct pipe_buffer_handle *buf ) +{ + struct xm_buffer *xm_buf = xm_bo(buf); + xm_buf->mapped = xm_buf->data; + return xm_buf->mapped; +} + +static void xm_buffer_unmap(struct softpipe_winsys *sws, + struct pipe_buffer_handle *buf) +{ + struct xm_buffer *xm_buf = xm_bo(buf); + xm_buf->mapped = NULL; +} + + +static struct pipe_buffer_handle * +xm_buffer_reference(struct softpipe_winsys *sws, + struct pipe_buffer_handle *buf) +{ + struct xm_buffer *xm_buf = xm_bo(buf); + xm_buf->refcount++; + return buf; +} + +static void xm_buffer_unreference(struct softpipe_winsys *sws, + struct pipe_buffer_handle **buf) +{ + struct xm_buffer *xm_buf = xm_bo(*buf); + xm_buf->refcount--; + if (xm_buf->refcount == 0) { + if (xm_buf->data) { + free(xm_buf->data); + xm_buf->data = NULL; + } + free(xm_buf); + } + *buf = NULL; +} + + +static void xm_buffer_data(struct softpipe_winsys *sws, + struct pipe_buffer_handle *buf, + unsigned size, const void *data ) +{ + struct xm_buffer *xm_buf = xm_bo(buf); + assert(!xm_buf->data); + xm_buf->data = malloc(size); +} + +static void xm_buffer_subdata(struct softpipe_winsys *sws, + struct pipe_buffer_handle *buf, + unsigned long offset, + unsigned long size, + const void *data) +{ + struct xm_buffer *xm_buf = xm_bo(buf); + GLubyte *b = (GLubyte *) xm_buf->data; + assert(b); + memcpy(b + offset, data, size); +} + +static void xm_buffer_get_subdata(struct softpipe_winsys *sws, + struct pipe_buffer_handle *buf, + unsigned long offset, + unsigned long size, + void *data) +{ + const struct xm_buffer *xm_buf = xm_bo(buf); + const GLubyte *b = (GLubyte *) xm_buf->data; + assert(b); + memcpy(data, b + offset, size); +} + + +/* Softpipe has no concept of pools. We choose the tex/region pool + * for all buffers. + */ +static struct pipe_buffer_handle * +xm_create_buffer(struct softpipe_winsys *sws, + unsigned alignment) +{ + struct xm_buffer *buffer; + + buffer = CALLOC_STRUCT(xm_buffer); + return pipe_bo(buffer); +} + + +struct pipe_context * +xmesa_create_softpipe(XMesaContext xmesa) +{ + struct xm_softpipe_winsys *isws = CALLOC_STRUCT( xm_softpipe_winsys ); + + /* Fill in this struct with callbacks that softpipe will need to + * communicate with the window system, buffer manager, etc. + * + * Softpipe would be happy with a malloc based memory manager, but + * the SwapBuffers implementation in this winsys driver requires + * that rendering be done to an appropriate xm_buffer. + */ + isws->sws.create_buffer = xm_create_buffer; + isws->sws.buffer_map = xm_buffer_map; + isws->sws.buffer_unmap = xm_buffer_unmap; + isws->sws.buffer_reference = xm_buffer_reference; + isws->sws.buffer_unreference = xm_buffer_unreference; + isws->sws.buffer_data = xm_buffer_data; + isws->sws.buffer_subdata = xm_buffer_subdata; + isws->sws.buffer_get_subdata = xm_buffer_get_subdata; + + /* Create the softpipe context: + */ + return softpipe_create( &isws->sws ); +} |