From bee79eb9b9ef649585dc507dc756b1e79eb00d2c Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Thu, 29 May 2008 17:02:55 -0600 Subject: egl: new EGL/gallium/softpipe/xlib winsys Checkpoint commit. Most required code is in place, and compiles, but totally untested. --- src/gallium/winsys/egl_xlib/sw_winsys.c | 244 ++++++++++++++++++++++++++++++++ 1 file changed, 244 insertions(+) create mode 100644 src/gallium/winsys/egl_xlib/sw_winsys.c (limited to 'src/gallium/winsys/egl_xlib/sw_winsys.c') diff --git a/src/gallium/winsys/egl_xlib/sw_winsys.c b/src/gallium/winsys/egl_xlib/sw_winsys.c new file mode 100644 index 0000000000..0e71bdee9d --- /dev/null +++ b/src/gallium/winsys/egl_xlib/sw_winsys.c @@ -0,0 +1,244 @@ +/************************************************************************** + * + * 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. + * + **************************************************************************/ + +/** + * Totally software-based winsys layer. + * Note that the one winsys function that we can't implement here + * is flush_frontbuffer(). + * Whoever uses this code will have to provide that. + * + * Authors: Brian Paul + */ + + +#include "pipe/p_winsys.h" +#include "pipe/p_state.h" +#include "pipe/p_util.h" +#include "pipe/p_inlines.h" + +#include "sw_winsys.h" + + + +/** Subclass of pipe_winsys */ +struct sw_pipe_winsys +{ + struct pipe_winsys Base; + /* no extra fields for now */ +}; + + +/** subclass of pipe_buffer */ +struct sw_pipe_buffer +{ + struct pipe_buffer Base; + boolean UserBuffer; /** Is this a user-space buffer? */ + void *Data; + void *Mapped; +}; + + +/** cast wrapper */ +static INLINE struct sw_pipe_buffer * +sw_pipe_buffer(struct pipe_buffer *b) +{ + return (struct sw_pipe_buffer *) b; +} + + + +static const char * +get_name(struct pipe_winsys *pws) +{ + return "software"; +} + + +/** Create new pipe_buffer and allocate storage of given size */ +static struct pipe_buffer * +buffer_create(struct pipe_winsys *pws, + unsigned alignment, + unsigned usage, + unsigned size) +{ + struct sw_pipe_buffer *buffer = CALLOC_STRUCT(sw_pipe_buffer); + if (!buffer) + return NULL; + + buffer->Base.refcount = 1; + buffer->Base.alignment = alignment; + buffer->Base.usage = usage; + buffer->Base.size = size; + + /* align to 16-byte multiple for Cell */ + buffer->Data = align_malloc(size, MAX2(alignment, 16)); + + return &buffer->Base; +} + + +/** + * Create buffer which wraps user-space data. + */ +static struct pipe_buffer * +user_buffer_create(struct pipe_winsys *pws, void *ptr, unsigned bytes) +{ + struct sw_pipe_buffer *buffer = CALLOC_STRUCT(sw_pipe_buffer); + if (!buffer) + return NULL; + + buffer->Base.refcount = 1; + buffer->Base.size = bytes; + buffer->UserBuffer = TRUE; + buffer->Data = ptr; + + return &buffer->Base; +} + + +static void * +buffer_map(struct pipe_winsys *pws, struct pipe_buffer *buf, unsigned flags) +{ + struct sw_pipe_buffer *buffer = sw_pipe_buffer(buf); + buffer->Mapped = buffer->Data; + return buffer->Mapped; +} + + +static void +buffer_unmap(struct pipe_winsys *pws, struct pipe_buffer *buf) +{ + struct sw_pipe_buffer *buffer = sw_pipe_buffer(buf); + buffer->Mapped = NULL; +} + + +static void +buffer_destroy(struct pipe_winsys *pws, struct pipe_buffer *buf) +{ + struct sw_pipe_buffer *buffer = sw_pipe_buffer(buf); + + if (buffer->Data && !buffer->UserBuffer) { + align_free(buffer->Data); + buffer->Data = NULL; + } + + free(buffer); +} + + +/** + * Called via winsys->surface_alloc() to create new surfaces. + */ +static struct pipe_surface * +surface_alloc(struct pipe_winsys *ws) +{ + struct pipe_surface *surf = CALLOC_STRUCT(pipe_surface); + if (!surf) + return NULL; + + surf->refcount = 1; + surf->winsys = ws; + + return surf; +} + + +static void +surface_release(struct pipe_winsys *winsys, struct pipe_surface **s) +{ + struct pipe_surface *surf = *s; + assert(!surf->texture); + surf->refcount--; + if (surf->refcount == 0) { + if (surf->buffer) + pipe_buffer_reference(winsys, &surf->buffer, NULL); + free(surf); + } + *s = NULL; +} + + +static void +fence_reference(struct pipe_winsys *sws, struct pipe_fence_handle **ptr, + struct pipe_fence_handle *fence) +{ + /* no-op */ +} + + +static int +fence_signalled(struct pipe_winsys *sws, struct pipe_fence_handle *fence, + unsigned flag) +{ + /* no-op */ + return 0; +} + + +static int +fence_finish(struct pipe_winsys *sws, struct pipe_fence_handle *fence, + unsigned flag) +{ + /* no-op */ + return 0; +} + + +/** + * Create/return a new pipe_winsys object. + */ +struct pipe_winsys * +create_sw_winsys(void) +{ + struct sw_pipe_winsys *ws = CALLOC_STRUCT(sw_pipe_winsys); + if (!ws) + return NULL; + + /* Fill in this struct with callbacks that pipe will need to + * communicate with the window system, buffer manager, etc. + */ + ws->Base.buffer_create = buffer_create; + ws->Base.user_buffer_create = user_buffer_create; + ws->Base.buffer_map = buffer_map; + ws->Base.buffer_unmap = buffer_unmap; + ws->Base.buffer_destroy = buffer_destroy; + + ws->Base.surface_alloc = surface_alloc; + ws->Base.surface_alloc_storage = NULL; /* unused */ + ws->Base.surface_release = surface_release; + + ws->Base.fence_reference = fence_reference; + ws->Base.fence_signalled = fence_signalled; + ws->Base.fence_finish = fence_finish; + + ws->Base.flush_frontbuffer = NULL; /* not implemented here! */ + + ws->Base.get_name = get_name; + + return &ws->Base; +} -- cgit v1.2.3