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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 "util/u_memory.h"
#include "util/u_transfer.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
extern struct u_resource_vtbl svga_texture_vtbl;
struct svga_texture
{
struct u_resource b;
boolean defined[6][SVGA_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;
unsigned size; /**< Approximate size in bytes */
/** array indexed by cube face or 3D/array slice, one bit per mipmap level */
ushort *rendered_to;
};
/* Note this is only used for texture (not buffer) transfers:
*/
struct svga_transfer
{
struct pipe_transfer base;
unsigned face;
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_resource *resource )
{
struct svga_texture *tex = (struct svga_texture *)resource;
assert(tex == NULL || tex->b.vtbl == &svga_texture_vtbl);
return tex;
}
static INLINE struct svga_transfer *
svga_transfer(struct pipe_transfer *transfer)
{
assert(transfer);
return (struct svga_transfer *)transfer;
}
/**
* Increment the age of a view into a texture
* This is used to track updates to textures when we draw into
* them via a surface.
*/
static INLINE void
svga_age_texture_view(struct svga_texture *tex, unsigned level)
{
assert(level < Elements(tex->view_age));
tex->view_age[level] = ++(tex->age);
}
/**
* Mark the given texture face/level as being defined.
*/
static INLINE void
svga_define_texture_level(struct svga_texture *tex,
unsigned face,unsigned level)
{
assert(face < Elements(tex->defined));
assert(level < Elements(tex->defined[0]));
tex->defined[face][level] = TRUE;
}
static INLINE bool
svga_is_texture_level_defined(const struct svga_texture *tex,
unsigned face, unsigned level)
{
assert(face < Elements(tex->defined));
assert(level < Elements(tex->defined[0]));
return tex->defined[face][level];
}
/** For debugging, check that face and level are legal */
static inline void
check_face_level(const struct svga_texture *tex,
unsigned face, unsigned level)
{
if (tex->b.b.target == PIPE_TEXTURE_CUBE) {
assert(face < 6);
}
else if (tex->b.b.target == PIPE_TEXTURE_3D) {
assert(face < tex->b.b.depth0);
}
else {
assert(face < tex->b.b.array_size);
}
assert(level < 8 * sizeof(tex->rendered_to[0]));
}
static INLINE void
svga_set_texture_rendered_to(struct svga_texture *tex,
unsigned face, unsigned level)
{
check_face_level(tex, face, level);
tex->rendered_to[face] |= 1 << level;
}
static INLINE void
svga_clear_texture_rendered_to(struct svga_texture *tex,
unsigned face, unsigned level)
{
check_face_level(tex, face, level);
tex->rendered_to[face] &= ~(1 << level);
}
static INLINE boolean
svga_was_texture_rendered_to(const struct svga_texture *tex,
unsigned face, unsigned level)
{
check_face_level(tex, face, level);
return !!(tex->rendered_to[face] & (1 << level));
}
struct pipe_resource *
svga_texture_create(struct pipe_screen *screen,
const struct pipe_resource *template);
struct pipe_resource *
svga_texture_from_handle(struct pipe_screen * screen,
const struct pipe_resource *template,
struct winsys_handle *whandle);
#endif /* SVGA_TEXTURE_H */
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