+++ /dev/null
-/**************************************************************************
- *
- * 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 frontbuffer contents are
- * displayed, eg copy fake frontbuffer.
- */
- void (*flush_frontbuffer)( struct pipe_winsys *ws,
- struct pipe_resource *resource,
- unsigned level, unsigned layer,
- 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_BIND_*.
- * All possible usages must be present.
- *
- * 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_screen when creating a texture marked
- * with the PIPE_BIND_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 flags,
- uint64_t timeout );
-
-};
-
-/**
- * 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
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