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/**************************************************************************
*
* 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.
*
**************************************************************************/
#ifndef LP_TEXTURE_H
#define LP_TEXTURE_H
#include "pipe/p_state.h"
#include "util/u_debug.h"
#include "lp_limits.h"
enum lp_texture_usage
{
LP_TEX_USAGE_READ = 100,
LP_TEX_USAGE_READ_WRITE,
LP_TEX_USAGE_WRITE_ALL
};
/** Per-tile layout mode */
enum lp_texture_layout
{
LP_TEX_LAYOUT_NONE = 0, /**< no layout for the tile data yet */
LP_TEX_LAYOUT_TILED, /**< the tile data is in tiled layout */
LP_TEX_LAYOUT_LINEAR, /**< the tile data is in linear layout */
LP_TEX_LAYOUT_BOTH /**< the tile data is in both modes */
};
struct pipe_context;
struct pipe_screen;
struct llvmpipe_context;
struct sw_displaytarget;
/**
* We keep one or two copies of the texture image data: one in a simple
* linear layout (for texture sampling) and another in a tiled layout (for
* render targets). We keep track of whether each image tile is linear
* or tiled on a per-tile basis.
*/
/** A 1D/2D/3D image, one mipmap level */
struct llvmpipe_texture_image
{
void *data;
};
/**
* llvmpipe subclass of pipe_resource. A texture, drawing surface,
* vertex buffer, const buffer, etc.
* Textures are stored differently than othere types of objects such as
* vertex buffers and const buffers.
* The former are tiled and have per-tile layout flags.
* The later are simple malloc'd blocks of memory.
*/
struct llvmpipe_resource
{
struct pipe_resource base;
/** Row stride in bytes */
unsigned row_stride[LP_MAX_TEXTURE_LEVELS];
/** Image stride (for cube maps or 3D textures) in bytes */
unsigned img_stride[LP_MAX_TEXTURE_LEVELS];
unsigned tiles_per_row[LP_MAX_TEXTURE_LEVELS];
unsigned tiles_per_image[LP_MAX_TEXTURE_LEVELS];
/** Number of 3D slices or cube faces per level */
unsigned num_slices_faces[LP_MAX_TEXTURE_LEVELS];
/**
* Display target, for textures with the PIPE_BIND_DISPLAY_TARGET
* usage.
*/
struct sw_displaytarget *dt;
/**
* Malloc'ed data for regular textures, or a mapping to dt above.
*/
struct llvmpipe_texture_image tiled[LP_MAX_TEXTURE_LEVELS];
struct llvmpipe_texture_image linear[LP_MAX_TEXTURE_LEVELS];
/**
* Data for non-texture resources.
*/
void *data;
/** array [level][face or slice][tile_y][tile_x] of layout values) */
enum lp_texture_layout *layout[LP_MAX_TEXTURE_LEVELS];
boolean userBuffer; /** Is this a user-space buffer? */
unsigned timestamp;
unsigned id; /**< temporary, for debugging */
};
struct llvmpipe_transfer
{
struct pipe_transfer base;
unsigned long offset;
};
/** cast wrappers */
static INLINE struct llvmpipe_resource *
llvmpipe_resource(struct pipe_resource *pt)
{
return (struct llvmpipe_resource *) pt;
}
static INLINE const struct llvmpipe_resource *
llvmpipe_resource_const(const struct pipe_resource *pt)
{
return (const struct llvmpipe_resource *) pt;
}
static INLINE struct llvmpipe_transfer *
llvmpipe_transfer(struct pipe_transfer *pt)
{
return (struct llvmpipe_transfer *) pt;
}
void llvmpipe_init_screen_resource_funcs(struct pipe_screen *screen);
void llvmpipe_init_context_resource_funcs(struct pipe_context *pipe);
static INLINE unsigned
llvmpipe_resource_stride(struct pipe_resource *resource,
unsigned level)
{
struct llvmpipe_resource *lpr = llvmpipe_resource(resource);
assert(level < LP_MAX_TEXTURE_2D_LEVELS);
return lpr->row_stride[level];
}
void *
llvmpipe_resource_map(struct pipe_resource *resource,
unsigned face_slice,
unsigned level,
unsigned zslice,
enum lp_texture_usage tex_usage,
enum lp_texture_layout layout);
void
llvmpipe_resource_unmap(struct pipe_resource *resource,
unsigned face_slice,
unsigned level,
unsigned zslice);
void *
llvmpipe_resource_data(struct pipe_resource *resource);
ubyte *
llvmpipe_get_texture_image_address(struct llvmpipe_resource *lpr,
unsigned face_slice, unsigned level,
enum lp_texture_layout layout);
void *
llvmpipe_get_texture_image(struct llvmpipe_resource *resource,
unsigned face_slice, unsigned level,
enum lp_texture_usage usage,
enum lp_texture_layout layout);
void *
llvmpipe_get_texture_image_all(struct llvmpipe_resource *lpr,
unsigned level,
enum lp_texture_usage usage,
enum lp_texture_layout layout);
ubyte *
llvmpipe_get_texture_tile_linear(struct llvmpipe_resource *lpr,
unsigned face_slice, unsigned level,
enum lp_texture_usage usage,
unsigned x, unsigned y);
ubyte *
llvmpipe_get_texture_tile(struct llvmpipe_resource *lpr,
unsigned face_slice, unsigned level,
enum lp_texture_usage usage,
unsigned x, unsigned y);
extern void
llvmpipe_init_screen_texture_funcs(struct pipe_screen *screen);
extern void
llvmpipe_init_context_texture_funcs(struct pipe_context *pipe);
#endif /* LP_TEXTURE_H */
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