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Diffstat (limited to 'src/gallium/include/pipe/p_screen.h')
| -rw-r--r-- | src/gallium/include/pipe/p_screen.h | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/src/gallium/include/pipe/p_screen.h b/src/gallium/include/pipe/p_screen.h new file mode 100644 index 00000000000..17d1548253b --- /dev/null +++ b/src/gallium/include/pipe/p_screen.h @@ -0,0 +1,246 @@ +/************************************************************************** + * + * Copyright 2007 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. + * + **************************************************************************/ + +/** + * @file + * + * Screen, Adapter or GPU + * + * These are driver functions/facilities that are context independent. + */ + + +#ifndef P_SCREEN_H +#define P_SCREEN_H + + +#include "pipe/p_compiler.h" +#include "pipe/p_format.h" +#include "pipe/p_defines.h" + + + +#ifdef __cplusplus +extern "C" { +#endif + + +/** Opaque type */ +struct pipe_fence_handle; +struct pipe_winsys; +struct pipe_buffer; + + +/** + * Gallium screen/adapter context. Basically everything + * hardware-specific that doesn't actually require a rendering + * context. + */ +struct pipe_screen { + struct pipe_winsys *winsys; + + void (*destroy)( struct pipe_screen * ); + + + const char *(*get_name)( struct pipe_screen * ); + + const char *(*get_vendor)( struct pipe_screen * ); + + /** + * Query an integer-valued capability/parameter/limit + * \param param one of PIPE_CAP_x + */ + int (*get_param)( struct pipe_screen *, int param ); + + /** + * Query a float-valued capability/parameter/limit + * \param param one of PIPE_CAP_x + */ + float (*get_paramf)( struct pipe_screen *, int param ); + + /** + * Check if the given pipe_format is supported as a texture or + * drawing surface. + * \param tex_usage bitmask of PIPE_TEXTURE_USAGE_* + * \param flags bitmask of PIPE_TEXTURE_GEOM_* + */ + boolean (*is_format_supported)( struct pipe_screen *, + enum pipe_format format, + enum pipe_texture_target target, + unsigned tex_usage, + unsigned geom_flags ); + + /** + * Create a new texture object, using the given template info. + */ + struct pipe_texture * (*texture_create)(struct pipe_screen *, + const struct pipe_texture *templat); + + /** + * Create a new texture object, using the given template info, but on top of + * existing memory. + * + * It is assumed that the buffer data is layed out according to the expected + * by the hardware. NULL will be returned if any inconsistency is found. + */ + struct pipe_texture * (*texture_blanket)(struct pipe_screen *, + const struct pipe_texture *templat, + const unsigned *stride, + struct pipe_buffer *buffer); + + void (*texture_release)(struct pipe_screen *, + struct pipe_texture **pt); + + /** Get a surface which is a "view" into a texture */ + struct pipe_surface *(*get_tex_surface)(struct pipe_screen *, + struct pipe_texture *texture, + unsigned face, unsigned level, + unsigned zslice, + unsigned usage ); + + /* Surfaces allocated by the above must be released here: + */ + void (*tex_surface_release)( struct pipe_screen *, + struct pipe_surface ** ); + + + void *(*surface_map)( struct pipe_screen *, + struct pipe_surface *surface, + unsigned flags ); + + void (*surface_unmap)( struct pipe_screen *, + struct pipe_surface *surface ); + + + /** + * Buffer management. Buffer attributes are mostly fixed over its lifetime. + * + */ + struct pipe_buffer *(*buffer_create)( struct pipe_screen *screen, + 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_buffer *(*user_buffer_create)(struct pipe_screen *screen, + 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_buffer *(*surface_buffer_create)(struct pipe_screen *screen, + unsigned width, unsigned height, + enum pipe_format format, + unsigned 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_screen *screen, + struct pipe_buffer *buf, + unsigned usage ); + + void (*buffer_unmap)( struct pipe_screen *screen, + struct pipe_buffer *buf ); + + void (*buffer_destroy)( struct pipe_screen *screen, + struct pipe_buffer *buf ); + + + /** + * Do any special operations to ensure frontbuffer contents are + * displayed, eg copy fake frontbuffer. + */ + void (*flush_frontbuffer)( struct pipe_screen *screen, + struct pipe_surface *surf, + void *context_private ); + + + + /** Set ptr = fence, with reference counting */ + void (*fence_reference)( struct pipe_screen *screen, + 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_screen *screen, + 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_screen *screen, + struct pipe_fence_handle *fence, + unsigned flag ); + +}; + + +#ifdef __cplusplus +} +#endif + +#endif /* P_SCREEN_H */ |