/********************************************************** * Copyright 2008-2009 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, sublicense, 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 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 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * 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 SVGA_SAMPLER_VIEW_H #define SVGA_SAMPLER_VIEW_H #include "pipe/p_compiler.h" #include "pipe/p_state.h" #include "util/u_inlines.h" #include "svga_screen_cache.h" struct pipe_context; struct pipe_screen; struct svga_context; struct svga_winsys_surface; enum SVGA3dSurfaceFormat; /** * A sampler's view into a texture * * We currently cache one sampler view on * the texture and in there by holding a reference * from the texture to the sampler view. * * Because of this we can not hold a refernce to the * texture from the sampler view. So the user * of the sampler views must make sure that the * texture has a reference take for as long as * the sampler view is refrenced. * * Just unreferencing the sampler_view before the * texture is enough. */ struct svga_sampler_view { struct pipe_reference reference; struct pipe_resource *texture; int min_lod; int max_lod; unsigned age; struct svga_host_surface_cache_key key; struct svga_winsys_surface *handle; }; extern struct svga_sampler_view * svga_get_tex_sampler_view(struct pipe_context *pipe, struct pipe_resource *pt, unsigned min_lod, unsigned max_lod); void svga_validate_sampler_view(struct svga_context *svga, struct svga_sampler_view *v); void svga_destroy_sampler_view_priv(struct svga_sampler_view *v); void svga_debug_describe_sampler_view(char *buf, const struct svga_sampler_view *sv); static inline void svga_sampler_view_reference(struct svga_sampler_view **ptr, struct svga_sampler_view *v) { struct svga_sampler_view *old = *ptr; if (pipe_reference_described(&(*ptr)->reference, &v->reference, (debug_reference_descriptor)svga_debug_describe_sampler_view)) svga_destroy_sampler_view_priv(old); *ptr = v; } #endif