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/**********************************************************
* 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_TEXTURE_H
#define SVGA_TEXTURE_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;
#define SVGA_MAX_TEXTURE_LEVELS 16
/**
* 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_texture *texture;
int min_lod;
int max_lod;
unsigned age;
struct svga_host_surface_cache_key key;
struct svga_winsys_surface *handle;
};
struct svga_texture
{
struct pipe_texture base;
boolean defined[6][PIPE_MAX_TEXTURE_LEVELS];
struct svga_sampler_view *cached_view;
unsigned view_age[SVGA_MAX_TEXTURE_LEVELS];
unsigned age;
boolean views_modified;
/**
* Creation key for the host surface handle.
*
* This structure describes all the host surface characteristics so that it
* can be looked up in cache, since creating a host surface is often a slow
* operation.
*/
struct svga_host_surface_cache_key key;
/**
* Handle for the host side surface.
*
* This handle is owned by this texture. Views should hold on to a reference
* to this texture and never destroy this handle directly.
*/
struct svga_winsys_surface *handle;
};
struct svga_surface
{
struct pipe_surface base;
struct svga_host_surface_cache_key key;
struct svga_winsys_surface *handle;
unsigned real_face;
unsigned real_level;
unsigned real_zslice;
boolean dirty;
};
struct svga_transfer
{
struct pipe_transfer base;
struct svga_winsys_buffer *hwbuf;
/* Height of the hardware buffer in pixel blocks */
unsigned hw_nblocksy;
/* Temporary malloc buffer when we can't allocate a hardware buffer
* big enough */
void *swbuf;
};
static INLINE struct svga_texture *
svga_texture(struct pipe_texture *texture)
{
return (struct svga_texture *)texture;
}
static INLINE struct svga_surface *
svga_surface(struct pipe_surface *surface)
{
assert(surface);
return (struct svga_surface *)surface;
}
static INLINE struct svga_transfer *
svga_transfer(struct pipe_transfer *transfer)
{
assert(transfer);
return (struct svga_transfer *)transfer;
}
extern struct svga_sampler_view *
svga_get_tex_sampler_view(struct pipe_context *pipe,
struct pipe_texture *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);
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(&(*ptr)->reference, &v->reference))
svga_destroy_sampler_view_priv(old);
*ptr = v;
}
extern void
svga_propagate_surface(struct pipe_context *pipe, struct pipe_surface *surf);
extern boolean
svga_surface_needs_propagation(struct pipe_surface *surf);
extern void
svga_screen_init_texture_functions(struct pipe_screen *screen);
enum SVGA3dSurfaceFormat
svga_translate_format(enum pipe_format format);
enum SVGA3dSurfaceFormat
svga_translate_format_render(enum pipe_format format);
#endif /* SVGA_TEXTURE_H */
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