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/*
* Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
* Copyright 2010 Marek Olšák <maraeo@gmail.com>
*
* 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. */
#include "r300_context.h"
#include "r300_transfer.h"
#include "r300_texture.h"
#include "r300_screen.h"
#include "util/u_memory.h"
#include "util/u_format.h"
static struct pipe_transfer*
r300_get_tex_transfer(struct pipe_screen *screen,
struct pipe_texture *texture,
unsigned face, unsigned level, unsigned zslice,
enum pipe_transfer_usage usage, unsigned x, unsigned y,
unsigned w, unsigned h)
{
struct r300_texture *tex = (struct r300_texture *)texture;
struct r300_transfer *trans;
struct r300_screen *rscreen = r300_screen(screen);
unsigned offset;
offset = r300_texture_get_offset(tex, level, zslice, face); /* in bytes */
trans = CALLOC_STRUCT(r300_transfer);
if (trans) {
pipe_texture_reference(&trans->transfer.texture, texture);
trans->transfer.x = x;
trans->transfer.y = y;
trans->transfer.width = w;
trans->transfer.height = h;
trans->transfer.stride = r300_texture_get_stride(rscreen, tex, level);
trans->transfer.usage = usage;
trans->transfer.zslice = zslice;
trans->transfer.face = face;
trans->offset = offset;
}
return &trans->transfer;
}
static void r300_tex_transfer_destroy(struct pipe_transfer *trans)
{
pipe_texture_reference(&trans->texture, NULL);
FREE(trans);
}
static void* r300_transfer_map(struct pipe_screen *screen,
struct pipe_transfer *transfer)
{
struct r300_texture *tex = (struct r300_texture*)transfer->texture;
char *map;
enum pipe_format format = tex->tex.format;
map = pipe_buffer_map(screen, tex->buffer,
pipe_transfer_buffer_flags(transfer));
if (!map) {
return NULL;
}
return map + r300_transfer(transfer)->offset +
transfer->y / util_format_get_blockheight(format) * transfer->stride +
transfer->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
}
static void r300_transfer_unmap(struct pipe_screen *screen,
struct pipe_transfer *transfer)
{
struct r300_texture *tex = (struct r300_texture*)transfer->texture;
pipe_buffer_unmap(screen, tex->buffer);
}
void r300_init_screen_transfer_functions(struct pipe_screen *screen)
{
screen->get_tex_transfer = r300_get_tex_transfer;
screen->tex_transfer_destroy = r300_tex_transfer_destroy;
screen->transfer_map = r300_transfer_map;
screen->transfer_unmap = r300_transfer_unmap;
}
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