/************************************************************************** * * 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 winsys_handle; /** Opaque type */ struct pipe_fence_handle; struct pipe_winsys; struct pipe_resource; struct pipe_surface; struct pipe_transfer; /** * 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 *, enum pipe_cap param ); /** * Query a float-valued capability/parameter/limit * \param param one of PIPE_CAP_x */ float (*get_paramf)( struct pipe_screen *, enum pipe_cap param ); /** * Query a per-shader-stage integer-valued capability/parameter/limit * \param param one of PIPE_CAP_x */ int (*get_shader_param)( struct pipe_screen *, unsigned shader, enum pipe_shader_cap param ); struct pipe_context * (*context_create)( struct pipe_screen *, void *priv ); struct pipe_video_context * (*video_context_create)( struct pipe_screen *screen, enum pipe_video_profile profile, enum pipe_video_chroma_format chroma_format, unsigned width, unsigned height, void *priv ); /** * Check if the given pipe_format is supported as a texture or * drawing surface. * \param bindings bitmask of PIPE_BIND_* * \param geom_flags bitmask of PIPE_TEXTURE_GEOM_* */ boolean (*is_format_supported)( struct pipe_screen *, enum pipe_format format, enum pipe_texture_target target, unsigned sample_count, unsigned bindings, unsigned geom_flags ); /** * Create a new texture object, using the given template info. */ struct pipe_resource * (*resource_create)(struct pipe_screen *, const struct pipe_resource *templat); /** * Create a texture from a winsys_handle. The handle is often created in * another process by first creating a pipe texture and then calling * texture_get_handle. */ struct pipe_resource * (*resource_from_handle)(struct pipe_screen *, const struct pipe_resource *templat, struct winsys_handle *handle); /** * Get a winsys_handle from a texture. Some platforms/winsys requires * that the texture is created with a special usage flag like * DISPLAYTARGET or PRIMARY. */ boolean (*resource_get_handle)(struct pipe_screen *, struct pipe_resource *tex, struct winsys_handle *handle); void (*resource_destroy)(struct pipe_screen *, struct pipe_resource *pt); /** Get a 2D surface which is a "view" into a texture * \param usage bitmaks of PIPE_BIND_* flags */ struct pipe_surface *(*get_tex_surface)(struct pipe_screen *, struct pipe_resource *resource, unsigned face, unsigned level, unsigned zslice, unsigned usage ); void (*tex_surface_destroy)(struct pipe_surface *); /** * 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_screen *screen, void *ptr, unsigned bytes, unsigned bind_flags); /** * Do any special operations to ensure frontbuffer contents are * displayed, eg copy fake frontbuffer. * \param winsys_drawable_handle an opaque handle that the calling context * gets out-of-band */ void (*flush_frontbuffer)( struct pipe_screen *screen, struct pipe_surface *surf, void *winsys_drawable_handle ); /** 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 flags ); /** * 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 flags ); }; #ifdef __cplusplus } #endif #endif /* P_SCREEN_H */