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/*
* Copyright 2016 Advanced Micro Devices, Inc.
*
* 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
* on 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
* THE AUTHOR(S) AND/OR THEIR 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_PBO_H
#define ST_PBO_H
struct gl_pixelstore_attrib;
struct st_context;
struct st_pbo_addresses {
int xoffset;
int yoffset;
unsigned width;
unsigned height;
unsigned depth;
unsigned bytes_per_pixel;
/* Everything below is filled in by st_pbo_from_pixelstore */
unsigned pixels_per_row;
unsigned image_height;
/* Everything below is filled in by st_pbo_setup_buffer */
/* Buffer and view. */
struct pipe_resource *buffer; /* non-owning pointer */
unsigned first_element;
unsigned last_element;
/* Constant buffer for the fragment shader. */
struct {
int32_t xoffset;
int32_t yoffset;
int32_t stride;
int32_t image_size;
} constants;
};
bool
st_pbo_addresses_setup(struct st_context *st,
struct pipe_resource *buf, intptr_t buf_offset,
struct st_pbo_addresses *addr);
bool
st_pbo_addresses_pixelstore(struct st_context *st,
GLenum gl_target, bool skip_images,
const struct gl_pixelstore_attrib *store,
const void *pixels,
struct st_pbo_addresses *addr);
bool
st_pbo_draw(struct st_context *st, const struct st_pbo_addresses *addr,
unsigned surface_width, unsigned surface_height);
void *
st_pbo_create_vs(struct st_context *st);
void *
st_pbo_create_gs(struct st_context *st);
void *
st_pbo_create_upload_fs(struct st_context *st);
void *
st_pbo_get_download_fs(struct st_context *st, enum pipe_texture_target target);
extern void
st_init_pbo_helpers(struct st_context *st);
extern void
st_destroy_pbo_helpers(struct st_context *st);
#endif /* ST_PBO_H */
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