Module: Mesa Branch: gallium-resources Commit: 9683f4423449fa5acf6c019c571223650473bd82 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=9683f4423449fa5acf6c019c571223650473bd82
Author: Keith Whitwell <[email protected]> Date: Sun Mar 21 17:14:31 2010 +0000 util: restore u_simple_screen, nouveau still relies on it --- src/gallium/auxiliary/util/u_simple_screen.h | 184 ++++++++++++++++++++++++++ 1 files changed, 184 insertions(+), 0 deletions(-) diff --git a/src/gallium/auxiliary/util/u_simple_screen.h b/src/gallium/auxiliary/util/u_simple_screen.h new file mode 100644 index 0000000..e189724 --- /dev/null +++ b/src/gallium/auxiliary/util/u_simple_screen.h @@ -0,0 +1,184 @@ +/************************************************************************** + * + * Copyright 2009 VMware, Inc. + * 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. + * + **************************************************************************/ + +#ifndef U_SIMPLE_SCREEN_H +#define U_SIMPLE_SCREEN_H + +#include "pipe/p_format.h" + +struct pipe_screen; +struct pipe_fence_handle; +struct pipe_surface; +struct pipe_resource; + +/** + * Gallium3D drivers are (meant to be!) independent of both GL and the + * window system. The window system provides a buffer manager and a + * set of additional hooks for things like command buffer submission, + * etc. + * + * There clearly has to be some agreement between the window system + * driver and the hardware driver about the format of command buffers, + * etc. + */ +struct pipe_winsys +{ + void (*destroy)( struct pipe_winsys *ws ); + + /** Returns name of this winsys interface */ + const char *(*get_name)( struct pipe_winsys *ws ); + + /** + * Do any special operations to ensure buffer size is correct + */ + void (*update_buffer)( struct pipe_winsys *ws, + void *context_private ); + /** + * Do any special operations to ensure frontbuffer contents are + * displayed, eg copy fake frontbuffer. + */ + void (*flush_frontbuffer)( struct pipe_winsys *ws, + struct pipe_surface *surf, + void *context_private ); + + + /** + * Buffer management. Buffer attributes are mostly fixed over its lifetime. + * + * Remember that gallium gets to choose the interface it needs, and the + * window systems must then implement that interface (rather than the + * other way around...). + * + * usage is a bitmask of PIPE_BUFFER_USAGE_PIXEL/VERTEX/INDEX/CONSTANT. This + * usage argument is only an optimization hint, not a guarantee, therefore + * proper behavior must be observed in all circumstances. + * + * alignment indicates the client's alignment requirements, eg for + * SSE instructions. + */ + struct pipe_resource *(*buffer_create)( struct pipe_winsys *ws, + unsigned alignment, + unsigned usage, + unsigned size ); + + /** + * Create a buffer that wraps user-space data. + * + * Effectively this schedules a delayed call to buffer_create + * followed by an upload of the data at *some point in the future*, + * or perhaps never. Basically the allocate/upload is delayed + * until the buffer is actually passed to hardware. + * + * The intention is to provide a quick way to turn regular data + * into a buffer, and secondly to avoid a copy operation if that + * data subsequently turns out to be only accessed by the CPU. + * + * Common example is OpenGL vertex buffers that are subsequently + * processed either by software TNL in the driver or by passing to + * hardware. + * + * XXX: What happens if the delayed call to buffer_create() fails? + * + * Note that ptr may be accessed at any time upto the time when the + * buffer is destroyed, so the data must not be freed before then. + */ + struct pipe_resource *(*user_buffer_create)(struct pipe_winsys *ws, + void *ptr, + unsigned bytes); + + /** + * Allocate storage for a display target surface. + * + * Often surfaces which are meant to be blitted to the front screen (i.e., + * display targets) must be allocated with special characteristics, memory + * pools, or obtained directly from the windowing system. + * + * This callback is invoked by the pipe_screenwhen creating a texture marked + * with the PIPE_TEXTURE_USAGE_DISPLAY_TARGET flag to get the underlying + * buffer storage. + */ + struct pipe_resource *(*surface_buffer_create)(struct pipe_winsys *ws, + unsigned width, unsigned height, + enum pipe_format format, + unsigned usage, + unsigned tex_usage, + unsigned *stride); + + + /** + * Map the entire data store of a buffer object into the client's address. + * flags is bitmask of PIPE_BUFFER_USAGE_CPU_READ/WRITE flags. + */ + void *(*buffer_map)( struct pipe_winsys *ws, + struct pipe_resource *buf, + unsigned usage ); + + void (*buffer_unmap)( struct pipe_winsys *ws, + struct pipe_resource *buf ); + + void (*buffer_destroy)( struct pipe_resource *buf ); + + + /** Set ptr = fence, with reference counting */ + void (*fence_reference)( struct pipe_winsys *ws, + struct pipe_fence_handle **ptr, + struct pipe_fence_handle *fence ); + + /** + * Checks whether the fence has been signalled. + * \param flags driver-specific meaning + * \return zero on success. + */ + int (*fence_signalled)( struct pipe_winsys *ws, + struct pipe_fence_handle *fence, + unsigned flag ); + + /** + * Wait for the fence to finish. + * \param flags driver-specific meaning + * \return zero on success. + */ + int (*fence_finish)( struct pipe_winsys *ws, + struct pipe_fence_handle *fence, + unsigned flag ); + +}; + +/** + * The following function initializes a simple passthrough screen. + * + * All the relevant screen function pointers will forwarded to the + * winsys. + */ +void u_simple_screen_init(struct pipe_screen *screen); + +/** + * Returns the name of the winsys associated with this screen. + */ +const char* u_simple_screen_winsys_name(struct pipe_screen *screen); + +#endif _______________________________________________ mesa-commit mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/mesa-commit
