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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 ST_TEXTURE_H
#define ST_TEXTURE_H
#include "pipe/p_context.h"
#include "util/u_sampler.h"
#include "main/mtypes.h"
struct pipe_resource;
/**
* Subclass of gl_texure_image.
*/
struct st_texture_image
{
struct gl_texture_image base;
/* These aren't stored in gl_texture_image
*/
GLuint level;
GLuint face;
/* If stImage->pt != NULL, image data is stored here.
* Else if stImage->base.Data != NULL, image is stored there.
* Else there is no image data.
*/
struct pipe_resource *pt;
struct pipe_transfer *transfer;
};
/**
* Subclass of gl_texure_object.
*/
struct st_texture_object
{
struct gl_texture_object base; /* The "parent" object */
/* The texture must include at levels [0..lastLevel] once validated:
*/
GLuint lastLevel;
/** The size of the level=0 mipmap image */
GLuint width0, height0, depth0;
/* On validation any active images held in main memory or in other
* textures will be copied to this texture and the old storage freed.
*/
struct pipe_resource *pt;
/* Default sampler view attached to this texture object. Created lazily
* on first binding.
*/
struct pipe_sampler_view *sampler_view;
/* True if there is/was a surface bound to this texture object. It helps
* track whether the texture object is surface based or not.
*/
GLboolean surface_based;
};
static INLINE struct st_texture_image *
st_texture_image(struct gl_texture_image *img)
{
return (struct st_texture_image *) img;
}
static INLINE struct st_texture_object *
st_texture_object(struct gl_texture_object *obj)
{
return (struct st_texture_object *) obj;
}
static INLINE struct pipe_resource *
st_get_texobj_resource(struct gl_texture_object *texObj)
{
struct st_texture_object *stObj = st_texture_object(texObj);
return stObj ? stObj->pt : NULL;
}
static INLINE struct pipe_resource *
st_get_stobj_resource(struct st_texture_object *stObj)
{
return stObj ? stObj->pt : NULL;
}
static INLINE struct pipe_sampler_view *
st_create_texture_sampler_view(struct pipe_context *pipe,
struct pipe_resource *texture)
{
struct pipe_sampler_view templ;
u_sampler_view_default_template(&templ, texture, texture->format);
return pipe->create_sampler_view(pipe, texture, &templ);
}
static INLINE struct pipe_sampler_view *
st_create_texture_sampler_view_format(struct pipe_context *pipe,
struct pipe_resource *texture,
enum pipe_format format)
{
struct pipe_sampler_view templ;
u_sampler_view_default_template(&templ, texture, format);
return pipe->create_sampler_view(pipe, texture, &templ);
}
static INLINE struct pipe_sampler_view *
st_get_texture_sampler_view(struct st_texture_object *stObj,
struct pipe_context *pipe)
{
if (!stObj || !stObj->pt) {
return NULL;
}
if (!stObj->sampler_view) {
stObj->sampler_view = st_create_texture_sampler_view(pipe, stObj->pt);
}
return stObj->sampler_view;
}
extern struct pipe_resource *
st_texture_create(struct st_context *st,
enum pipe_texture_target target,
enum pipe_format format,
GLuint last_level,
GLuint width0,
GLuint height0,
GLuint depth0,
GLuint tex_usage );
/* Check if an image fits into an existing texture object.
*/
extern GLboolean
st_texture_match_image(const struct pipe_resource *pt,
const struct gl_texture_image *image,
GLuint face, GLuint level);
/* Return a pointer to an image within a texture. Return image stride as
* well.
*/
extern GLubyte *
st_texture_image_map(struct st_context *st,
struct st_texture_image *stImage,
GLuint zoffset,
enum pipe_transfer_usage usage,
unsigned x, unsigned y,
unsigned w, unsigned h);
extern void
st_texture_image_unmap(struct st_context *st,
struct st_texture_image *stImage);
/* Return pointers to each 2d slice within an image. Indexed by depth
* value.
*/
extern const GLuint *
st_texture_depth_offsets(struct pipe_resource *pt, GLuint level);
/* Upload an image into a texture
*/
extern void
st_texture_image_data(struct st_context *st,
struct pipe_resource *dst,
GLuint face, GLuint level, void *src,
GLuint src_row_pitch, GLuint src_image_pitch);
/* Copy an image between two textures
*/
extern void
st_texture_image_copy(struct pipe_context *pipe,
struct pipe_resource *dst, GLuint dstLevel,
struct pipe_resource *src, GLuint srcLevel,
GLuint face);
#endif
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