/************************************************************************** * * 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 */