| /************************************************************************** |
| * |
| * 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. |
| * |
| * |
| **************************************************************************/ |
| |
| /** |
| * @file |
| * Softpipe support. |
| * |
| * @author Keith Whitwell |
| * @author Brian Paul |
| * @author Jose Fonseca |
| */ |
| |
| |
| #include "pipe/internal/p_winsys_screen.h"/* port to just p_screen */ |
| #include "pipe/p_format.h" |
| #include "pipe/p_context.h" |
| #include "pipe/p_inlines.h" |
| #include "util/u_math.h" |
| #include "util/u_memory.h" |
| #include "softpipe/sp_winsys.h" |
| #include "st_winsys.h" |
| |
| |
| struct st_softpipe_buffer |
| { |
| struct pipe_buffer base; |
| boolean userBuffer; /** Is this a user-space buffer? */ |
| void *data; |
| void *mapped; |
| }; |
| |
| |
| /** Cast wrapper */ |
| static INLINE struct st_softpipe_buffer * |
| st_softpipe_buffer( struct pipe_buffer *buf ) |
| { |
| return (struct st_softpipe_buffer *)buf; |
| } |
| |
| |
| static void * |
| st_softpipe_buffer_map(struct pipe_winsys *winsys, |
| struct pipe_buffer *buf, |
| unsigned flags) |
| { |
| struct st_softpipe_buffer *st_softpipe_buf = st_softpipe_buffer(buf); |
| st_softpipe_buf->mapped = st_softpipe_buf->data; |
| return st_softpipe_buf->mapped; |
| } |
| |
| |
| static void |
| st_softpipe_buffer_unmap(struct pipe_winsys *winsys, |
| struct pipe_buffer *buf) |
| { |
| struct st_softpipe_buffer *st_softpipe_buf = st_softpipe_buffer(buf); |
| st_softpipe_buf->mapped = NULL; |
| } |
| |
| |
| static void |
| st_softpipe_buffer_destroy(struct pipe_buffer *buf) |
| { |
| struct st_softpipe_buffer *oldBuf = st_softpipe_buffer(buf); |
| |
| if (oldBuf->data) { |
| if (!oldBuf->userBuffer) |
| align_free(oldBuf->data); |
| |
| oldBuf->data = NULL; |
| } |
| |
| FREE(oldBuf); |
| } |
| |
| |
| static void |
| st_softpipe_flush_frontbuffer(struct pipe_winsys *winsys, |
| struct pipe_surface *surf, |
| void *context_private) |
| { |
| } |
| |
| |
| |
| static const char * |
| st_softpipe_get_name(struct pipe_winsys *winsys) |
| { |
| return "softpipe"; |
| } |
| |
| |
| static struct pipe_buffer * |
| st_softpipe_buffer_create(struct pipe_winsys *winsys, |
| unsigned alignment, |
| unsigned usage, |
| unsigned size) |
| { |
| struct st_softpipe_buffer *buffer = CALLOC_STRUCT(st_softpipe_buffer); |
| |
| pipe_reference_init(&buffer->base.reference, 1); |
| buffer->base.alignment = alignment; |
| buffer->base.usage = usage; |
| buffer->base.size = size; |
| |
| buffer->data = align_malloc(size, alignment); |
| |
| return &buffer->base; |
| } |
| |
| |
| /** |
| * Create buffer which wraps user-space data. |
| */ |
| static struct pipe_buffer * |
| st_softpipe_user_buffer_create(struct pipe_winsys *winsys, |
| void *ptr, |
| unsigned bytes) |
| { |
| struct st_softpipe_buffer *buffer; |
| |
| buffer = CALLOC_STRUCT(st_softpipe_buffer); |
| if(!buffer) |
| return NULL; |
| |
| pipe_reference_init(&buffer->base.reference, 1); |
| buffer->base.size = bytes; |
| buffer->userBuffer = TRUE; |
| buffer->data = ptr; |
| |
| return &buffer->base; |
| } |
| |
| |
| /** |
| * Round n up to next multiple. |
| */ |
| static INLINE unsigned |
| round_up(unsigned n, unsigned multiple) |
| { |
| return (n + multiple - 1) & ~(multiple - 1); |
| } |
| |
| |
| static struct pipe_buffer * |
| st_softpipe_surface_buffer_create(struct pipe_winsys *winsys, |
| unsigned width, unsigned height, |
| enum pipe_format format, |
| unsigned usage, |
| unsigned tex_usage, |
| unsigned *stride) |
| { |
| const unsigned alignment = 64; |
| struct pipe_format_block block; |
| unsigned nblocksx, nblocksy; |
| |
| pf_get_block(format, &block); |
| nblocksx = pf_get_nblocksx(&block, width); |
| nblocksy = pf_get_nblocksy(&block, height); |
| *stride = round_up(nblocksx * block.size, alignment); |
| |
| return winsys->buffer_create(winsys, alignment, |
| usage, |
| *stride * nblocksy); |
| } |
| |
| |
| static void |
| st_softpipe_fence_reference(struct pipe_winsys *winsys, |
| struct pipe_fence_handle **ptr, |
| struct pipe_fence_handle *fence) |
| { |
| } |
| |
| |
| static int |
| st_softpipe_fence_signalled(struct pipe_winsys *winsys, |
| struct pipe_fence_handle *fence, |
| unsigned flag) |
| { |
| return 0; |
| } |
| |
| |
| static int |
| st_softpipe_fence_finish(struct pipe_winsys *winsys, |
| struct pipe_fence_handle *fence, |
| unsigned flag) |
| { |
| return 0; |
| } |
| |
| |
| static void |
| st_softpipe_destroy(struct pipe_winsys *winsys) |
| { |
| FREE(winsys); |
| } |
| |
| |
| static struct pipe_screen * |
| st_softpipe_screen_create(void) |
| { |
| static struct pipe_winsys *winsys; |
| struct pipe_screen *screen; |
| |
| winsys = CALLOC_STRUCT(pipe_winsys); |
| if(!winsys) |
| return NULL; |
| |
| winsys->destroy = st_softpipe_destroy; |
| |
| winsys->buffer_create = st_softpipe_buffer_create; |
| winsys->user_buffer_create = st_softpipe_user_buffer_create; |
| winsys->buffer_map = st_softpipe_buffer_map; |
| winsys->buffer_unmap = st_softpipe_buffer_unmap; |
| winsys->buffer_destroy = st_softpipe_buffer_destroy; |
| |
| winsys->surface_buffer_create = st_softpipe_surface_buffer_create; |
| |
| winsys->fence_reference = st_softpipe_fence_reference; |
| winsys->fence_signalled = st_softpipe_fence_signalled; |
| winsys->fence_finish = st_softpipe_fence_finish; |
| |
| winsys->flush_frontbuffer = st_softpipe_flush_frontbuffer; |
| winsys->get_name = st_softpipe_get_name; |
| |
| screen = softpipe_create_screen(winsys); |
| if(!screen) |
| st_softpipe_destroy(winsys); |
| |
| return screen; |
| } |
| |
| |
| static struct pipe_context * |
| st_softpipe_context_create(struct pipe_screen *screen) |
| { |
| return softpipe_create(screen); |
| } |
| |
| |
| const struct st_winsys st_softpipe_winsys = { |
| &st_softpipe_screen_create, |
| &st_softpipe_context_create, |
| }; |