/**************************************************************************
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*
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* Copyright 2009 VMware, Inc. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/**
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* @file
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* Surface utility functions.
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*
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* @author Brian Paul
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*/
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|
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#include "pipe/p_defines.h"
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#include "pipe/p_screen.h"
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#include "pipe/p_state.h"
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#include "util/u_format.h"
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#include "util/u_inlines.h"
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#include "util/u_rect.h"
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#include "util/u_surface.h"
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#include "util/u_pack_color.h"
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|
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/**
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* Initialize a pipe_surface object. 'view' is considered to have
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* uninitialized contents.
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*/
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void
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u_surface_default_template(struct pipe_surface *surf,
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const struct pipe_resource *texture)
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{
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memset(surf, 0, sizeof(*surf));
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|
surf->format = texture->format;
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}
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|
|
/**
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* Copy 2D rect from one place to another.
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* Position and sizes are in pixels.
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* src_stride may be negative to do vertical flip of pixels from source.
|
*/
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void
|
util_copy_rect(ubyte * dst,
|
enum pipe_format format,
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unsigned dst_stride,
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unsigned dst_x,
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unsigned dst_y,
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unsigned width,
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unsigned height,
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const ubyte * src,
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int src_stride,
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unsigned src_x,
|
unsigned src_y)
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{
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unsigned i;
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int src_stride_pos = src_stride < 0 ? -src_stride : src_stride;
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int blocksize = util_format_get_blocksize(format);
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int blockwidth = util_format_get_blockwidth(format);
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int blockheight = util_format_get_blockheight(format);
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|
assert(blocksize > 0);
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assert(blockwidth > 0);
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assert(blockheight > 0);
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dst_x /= blockwidth;
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dst_y /= blockheight;
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width = (width + blockwidth - 1)/blockwidth;
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height = (height + blockheight - 1)/blockheight;
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src_x /= blockwidth;
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src_y /= blockheight;
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dst += dst_x * blocksize;
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src += src_x * blocksize;
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dst += dst_y * dst_stride;
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src += src_y * src_stride_pos;
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width *= blocksize;
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if (width == dst_stride && width == (unsigned)src_stride)
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memcpy(dst, src, height * width);
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else {
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for (i = 0; i < height; i++) {
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memcpy(dst, src, width);
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dst += dst_stride;
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src += src_stride;
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}
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}
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}
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|
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/**
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* Copy 3D box from one place to another.
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* Position and sizes are in pixels.
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*/
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void
|
util_copy_box(ubyte * dst,
|
enum pipe_format format,
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unsigned dst_stride, unsigned dst_slice_stride,
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unsigned dst_x, unsigned dst_y, unsigned dst_z,
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unsigned width, unsigned height, unsigned depth,
|
const ubyte * src,
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int src_stride, unsigned src_slice_stride,
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unsigned src_x, unsigned src_y, unsigned src_z)
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{
|
unsigned z;
|
dst += dst_z * dst_slice_stride;
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src += src_z * src_slice_stride;
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for (z = 0; z < depth; ++z) {
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util_copy_rect(dst,
|
format,
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dst_stride,
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dst_x, dst_y,
|
width, height,
|
src,
|
src_stride,
|
src_x, src_y);
|
|
dst += dst_slice_stride;
|
src += src_slice_stride;
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}
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}
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|
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void
|
util_fill_rect(ubyte * dst,
|
enum pipe_format format,
|
unsigned dst_stride,
|
unsigned dst_x,
|
unsigned dst_y,
|
unsigned width,
|
unsigned height,
|
union util_color *uc)
|
{
|
const struct util_format_description *desc = util_format_description(format);
|
unsigned i, j;
|
unsigned width_size;
|
int blocksize = desc->block.bits / 8;
|
int blockwidth = desc->block.width;
|
int blockheight = desc->block.height;
|
|
assert(blocksize > 0);
|
assert(blockwidth > 0);
|
assert(blockheight > 0);
|
|
dst_x /= blockwidth;
|
dst_y /= blockheight;
|
width = (width + blockwidth - 1)/blockwidth;
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height = (height + blockheight - 1)/blockheight;
|
|
dst += dst_x * blocksize;
|
dst += dst_y * dst_stride;
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width_size = width * blocksize;
|
|
switch (blocksize) {
|
case 1:
|
if(dst_stride == width_size)
|
memset(dst, uc->ub, height * width_size);
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else {
|
for (i = 0; i < height; i++) {
|
memset(dst, uc->ub, width_size);
|
dst += dst_stride;
|
}
|
}
|
break;
|
case 2:
|
for (i = 0; i < height; i++) {
|
uint16_t *row = (uint16_t *)dst;
|
for (j = 0; j < width; j++)
|
*row++ = uc->us;
|
dst += dst_stride;
|
}
|
break;
|
case 4:
|
for (i = 0; i < height; i++) {
|
uint32_t *row = (uint32_t *)dst;
|
for (j = 0; j < width; j++)
|
*row++ = uc->ui[0];
|
dst += dst_stride;
|
}
|
break;
|
default:
|
for (i = 0; i < height; i++) {
|
ubyte *row = dst;
|
for (j = 0; j < width; j++) {
|
memcpy(row, uc, blocksize);
|
row += blocksize;
|
}
|
dst += dst_stride;
|
}
|
break;
|
}
|
}
|
|
|
void
|
util_fill_box(ubyte * dst,
|
enum pipe_format format,
|
unsigned stride,
|
unsigned layer_stride,
|
unsigned x,
|
unsigned y,
|
unsigned z,
|
unsigned width,
|
unsigned height,
|
unsigned depth,
|
union util_color *uc)
|
{
|
unsigned layer;
|
dst += z * layer_stride;
|
for (layer = z; layer < depth; layer++) {
|
util_fill_rect(dst, format,
|
stride,
|
x, y, width, height, uc);
|
dst += layer_stride;
|
}
|
}
|
|
|
/**
|
* Fallback function for pipe->resource_copy_region().
|
* We support copying between different formats (including compressed/
|
* uncompressed) if the bytes per block or pixel matches. If copying
|
* compressed -> uncompressed, the dst region is reduced by the block
|
* width, height. If copying uncompressed -> compressed, the dest region
|
* is expanded by the block width, height. See GL_ARB_copy_image.
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* Note: (X,Y)=(0,0) is always the upper-left corner.
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*/
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void
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util_resource_copy_region(struct pipe_context *pipe,
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struct pipe_resource *dst,
|
unsigned dst_level,
|
unsigned dst_x, unsigned dst_y, unsigned dst_z,
|
struct pipe_resource *src,
|
unsigned src_level,
|
const struct pipe_box *src_box_in)
|
{
|
struct pipe_transfer *src_trans, *dst_trans;
|
uint8_t *dst_map;
|
const uint8_t *src_map;
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enum pipe_format src_format;
|
enum pipe_format dst_format;
|
struct pipe_box src_box, dst_box;
|
unsigned src_bs, dst_bs, src_bw, dst_bw, src_bh, dst_bh;
|
|
assert(src && dst);
|
if (!src || !dst)
|
return;
|
|
assert((src->target == PIPE_BUFFER && dst->target == PIPE_BUFFER) ||
|
(src->target != PIPE_BUFFER && dst->target != PIPE_BUFFER));
|
|
src_format = src->format;
|
dst_format = dst->format;
|
|
/* init src box */
|
src_box = *src_box_in;
|
|
/* init dst box */
|
dst_box.x = dst_x;
|
dst_box.y = dst_y;
|
dst_box.z = dst_z;
|
dst_box.width = src_box.width;
|
dst_box.height = src_box.height;
|
dst_box.depth = src_box.depth;
|
|
src_bs = util_format_get_blocksize(src_format);
|
src_bw = util_format_get_blockwidth(src_format);
|
src_bh = util_format_get_blockheight(src_format);
|
dst_bs = util_format_get_blocksize(dst_format);
|
dst_bw = util_format_get_blockwidth(dst_format);
|
dst_bh = util_format_get_blockheight(dst_format);
|
|
/* Note: all box positions and sizes are in pixels */
|
if (src_bw > 1 && dst_bw == 1) {
|
/* Copy from compressed to uncompressed.
|
* Shrink dest box by the src block size.
|
*/
|
dst_box.width /= src_bw;
|
dst_box.height /= src_bh;
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}
|
else if (src_bw == 1 && dst_bw > 1) {
|
/* Copy from uncompressed to compressed.
|
* Expand dest box by the dest block size.
|
*/
|
dst_box.width *= dst_bw;
|
dst_box.height *= dst_bh;
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}
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else {
|
/* compressed -> compressed or uncompressed -> uncompressed copy */
|
assert(src_bw == dst_bw);
|
assert(src_bh == dst_bh);
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}
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|
assert(src_bs == dst_bs);
|
if (src_bs != dst_bs) {
|
/* This can happen if we fail to do format checking before hand.
|
* Don't crash below.
|
*/
|
return;
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}
|
|
/* check that region boxes are block aligned */
|
assert(src_box.x % src_bw == 0);
|
assert(src_box.y % src_bh == 0);
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assert(dst_box.x % dst_bw == 0);
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assert(dst_box.y % dst_bh == 0);
|
|
/* check that region boxes are not out of bounds */
|
assert(src_box.x + src_box.width <= (int)u_minify(src->width0, src_level));
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assert(src_box.y + src_box.height <= (int)u_minify(src->height0, src_level));
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assert(dst_box.x + dst_box.width <= (int)u_minify(dst->width0, dst_level));
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assert(dst_box.y + dst_box.height <= (int)u_minify(dst->height0, dst_level));
|
|
/* check that total number of src, dest bytes match */
|
assert((src_box.width / src_bw) * (src_box.height / src_bh) * src_bs ==
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(dst_box.width / dst_bw) * (dst_box.height / dst_bh) * dst_bs);
|
|
src_map = pipe->transfer_map(pipe,
|
src,
|
src_level,
|
PIPE_TRANSFER_READ,
|
&src_box, &src_trans);
|
assert(src_map);
|
if (!src_map) {
|
goto no_src_map;
|
}
|
|
dst_map = pipe->transfer_map(pipe,
|
dst,
|
dst_level,
|
PIPE_TRANSFER_WRITE |
|
PIPE_TRANSFER_DISCARD_RANGE, &dst_box,
|
&dst_trans);
|
assert(dst_map);
|
if (!dst_map) {
|
goto no_dst_map;
|
}
|
|
if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) {
|
assert(src_box.height == 1);
|
assert(src_box.depth == 1);
|
memcpy(dst_map, src_map, src_box.width);
|
} else {
|
util_copy_box(dst_map,
|
src_format,
|
dst_trans->stride, dst_trans->layer_stride,
|
0, 0, 0,
|
src_box.width, src_box.height, src_box.depth,
|
src_map,
|
src_trans->stride, src_trans->layer_stride,
|
0, 0, 0);
|
}
|
|
pipe->transfer_unmap(pipe, dst_trans);
|
no_dst_map:
|
pipe->transfer_unmap(pipe, src_trans);
|
no_src_map:
|
;
|
}
|
|
static void
|
util_clear_color_texture_helper(struct pipe_transfer *dst_trans,
|
ubyte *dst_map,
|
enum pipe_format format,
|
const union pipe_color_union *color,
|
unsigned width, unsigned height, unsigned depth)
|
{
|
union util_color uc;
|
|
assert(dst_trans->stride > 0);
|
|
if (util_format_is_pure_integer(format)) {
|
/*
|
* We expect int/uint clear values here, though some APIs
|
* might disagree (but in any case util_pack_color()
|
* couldn't handle it)...
|
*/
|
if (util_format_is_pure_sint(format)) {
|
util_format_write_4i(format, color->i, 0, &uc, 0, 0, 0, 1, 1);
|
} else {
|
assert(util_format_is_pure_uint(format));
|
util_format_write_4ui(format, color->ui, 0, &uc, 0, 0, 0, 1, 1);
|
}
|
} else {
|
util_pack_color(color->f, format, &uc);
|
}
|
|
util_fill_box(dst_map, format,
|
dst_trans->stride, dst_trans->layer_stride,
|
0, 0, 0, width, height, depth, &uc);
|
}
|
|
static void
|
util_clear_color_texture(struct pipe_context *pipe,
|
struct pipe_resource *texture,
|
enum pipe_format format,
|
const union pipe_color_union *color,
|
unsigned level,
|
unsigned dstx, unsigned dsty, unsigned dstz,
|
unsigned width, unsigned height, unsigned depth)
|
{
|
struct pipe_transfer *dst_trans;
|
ubyte *dst_map;
|
|
dst_map = pipe_transfer_map_3d(pipe,
|
texture,
|
level,
|
PIPE_TRANSFER_WRITE,
|
dstx, dsty, dstz,
|
width, height, depth,
|
&dst_trans);
|
if (!dst_map)
|
return;
|
|
if (dst_trans->stride > 0) {
|
util_clear_color_texture_helper(dst_trans, dst_map, format, color,
|
width, height, depth);
|
}
|
pipe->transfer_unmap(pipe, dst_trans);
|
}
|
|
|
#define UBYTE_TO_USHORT(B) ((B) | ((B) << 8))
|
|
|
/**
|
* Fallback for pipe->clear_render_target() function.
|
* XXX this looks too hackish to be really useful.
|
* cpp > 4 looks like a gross hack at best...
|
* Plus can't use these transfer fallbacks when clearing
|
* multisampled surfaces for instance.
|
* Clears all bound layers.
|
*/
|
void
|
util_clear_render_target(struct pipe_context *pipe,
|
struct pipe_surface *dst,
|
const union pipe_color_union *color,
|
unsigned dstx, unsigned dsty,
|
unsigned width, unsigned height)
|
{
|
struct pipe_transfer *dst_trans;
|
ubyte *dst_map;
|
|
assert(dst->texture);
|
if (!dst->texture)
|
return;
|
|
if (dst->texture->target == PIPE_BUFFER) {
|
/*
|
* The fill naturally works on the surface format, however
|
* the transfer uses resource format which is just bytes for buffers.
|
*/
|
unsigned dx, w;
|
unsigned pixstride = util_format_get_blocksize(dst->format);
|
dx = (dst->u.buf.first_element + dstx) * pixstride;
|
w = width * pixstride;
|
dst_map = pipe_transfer_map(pipe,
|
dst->texture,
|
0, 0,
|
PIPE_TRANSFER_WRITE,
|
dx, 0, w, 1,
|
&dst_trans);
|
if (dst_map) {
|
util_clear_color_texture_helper(dst_trans, dst_map, dst->format,
|
color, width, height, 1);
|
pipe->transfer_unmap(pipe, dst_trans);
|
}
|
}
|
else {
|
unsigned depth = dst->u.tex.last_layer - dst->u.tex.first_layer + 1;
|
util_clear_color_texture(pipe, dst->texture, dst->format, color,
|
dst->u.tex.level, dstx, dsty,
|
dst->u.tex.first_layer, width, height, depth);
|
}
|
}
|
|
static void
|
util_clear_depth_stencil_texture(struct pipe_context *pipe,
|
struct pipe_resource *texture,
|
enum pipe_format format,
|
unsigned clear_flags,
|
uint64_t zstencil, unsigned level,
|
unsigned dstx, unsigned dsty, unsigned dstz,
|
unsigned width, unsigned height, unsigned depth)
|
{
|
struct pipe_transfer *dst_trans;
|
ubyte *dst_map;
|
boolean need_rmw = FALSE;
|
unsigned dst_stride;
|
ubyte *dst_layer;
|
unsigned i, j, layer;
|
|
if ((clear_flags & PIPE_CLEAR_DEPTHSTENCIL) &&
|
((clear_flags & PIPE_CLEAR_DEPTHSTENCIL) != PIPE_CLEAR_DEPTHSTENCIL) &&
|
util_format_is_depth_and_stencil(format))
|
need_rmw = TRUE;
|
|
dst_map = pipe_transfer_map_3d(pipe,
|
texture,
|
level,
|
(need_rmw ? PIPE_TRANSFER_READ_WRITE :
|
PIPE_TRANSFER_WRITE),
|
dstx, dsty, dstz,
|
width, height, depth, &dst_trans);
|
assert(dst_map);
|
if (!dst_map)
|
return;
|
|
dst_stride = dst_trans->stride;
|
dst_layer = dst_map;
|
assert(dst_trans->stride > 0);
|
|
for (layer = 0; layer < depth; layer++) {
|
dst_map = dst_layer;
|
|
switch (util_format_get_blocksize(format)) {
|
case 1:
|
assert(format == PIPE_FORMAT_S8_UINT);
|
if(dst_stride == width)
|
memset(dst_map, (uint8_t) zstencil, height * width);
|
else {
|
for (i = 0; i < height; i++) {
|
memset(dst_map, (uint8_t) zstencil, width);
|
dst_map += dst_stride;
|
}
|
}
|
break;
|
case 2:
|
assert(format == PIPE_FORMAT_Z16_UNORM);
|
for (i = 0; i < height; i++) {
|
uint16_t *row = (uint16_t *)dst_map;
|
for (j = 0; j < width; j++)
|
*row++ = (uint16_t) zstencil;
|
dst_map += dst_stride;
|
}
|
break;
|
case 4:
|
if (!need_rmw) {
|
for (i = 0; i < height; i++) {
|
uint32_t *row = (uint32_t *)dst_map;
|
for (j = 0; j < width; j++)
|
*row++ = (uint32_t) zstencil;
|
dst_map += dst_stride;
|
}
|
}
|
else {
|
uint32_t dst_mask;
|
if (format == PIPE_FORMAT_Z24_UNORM_S8_UINT)
|
dst_mask = 0x00ffffff;
|
else {
|
assert(format == PIPE_FORMAT_S8_UINT_Z24_UNORM);
|
dst_mask = 0xffffff00;
|
}
|
if (clear_flags & PIPE_CLEAR_DEPTH)
|
dst_mask = ~dst_mask;
|
for (i = 0; i < height; i++) {
|
uint32_t *row = (uint32_t *)dst_map;
|
for (j = 0; j < width; j++) {
|
uint32_t tmp = *row & dst_mask;
|
*row++ = tmp | ((uint32_t) zstencil & ~dst_mask);
|
}
|
dst_map += dst_stride;
|
}
|
}
|
break;
|
case 8:
|
if (!need_rmw) {
|
for (i = 0; i < height; i++) {
|
uint64_t *row = (uint64_t *)dst_map;
|
for (j = 0; j < width; j++)
|
*row++ = zstencil;
|
dst_map += dst_stride;
|
}
|
}
|
else {
|
uint64_t src_mask;
|
|
if (clear_flags & PIPE_CLEAR_DEPTH)
|
src_mask = 0x00000000ffffffffull;
|
else
|
src_mask = 0x000000ff00000000ull;
|
|
for (i = 0; i < height; i++) {
|
uint64_t *row = (uint64_t *)dst_map;
|
for (j = 0; j < width; j++) {
|
uint64_t tmp = *row & ~src_mask;
|
*row++ = tmp | (zstencil & src_mask);
|
}
|
dst_map += dst_stride;
|
}
|
}
|
break;
|
default:
|
assert(0);
|
break;
|
}
|
dst_layer += dst_trans->layer_stride;
|
}
|
|
pipe->transfer_unmap(pipe, dst_trans);
|
}
|
|
|
void
|
util_clear_texture(struct pipe_context *pipe,
|
struct pipe_resource *tex,
|
unsigned level,
|
const struct pipe_box *box,
|
const void *data)
|
{
|
const struct util_format_description *desc =
|
util_format_description(tex->format);
|
|
if (level > tex->last_level)
|
return;
|
|
if (util_format_is_depth_or_stencil(tex->format)) {
|
unsigned clear = 0;
|
float depth = 0.0f;
|
uint8_t stencil = 0;
|
uint64_t zstencil;
|
|
if (util_format_has_depth(desc)) {
|
clear |= PIPE_CLEAR_DEPTH;
|
desc->unpack_z_float(&depth, 0, data, 0, 1, 1);
|
}
|
|
if (util_format_has_stencil(desc)) {
|
clear |= PIPE_CLEAR_STENCIL;
|
desc->unpack_s_8uint(&stencil, 0, data, 0, 1, 1);
|
}
|
|
zstencil = util_pack64_z_stencil(tex->format, depth, stencil);
|
|
util_clear_depth_stencil_texture(pipe, tex, tex->format, clear, zstencil,
|
level, box->x, box->y, box->z,
|
box->width, box->height, box->depth);
|
} else {
|
union pipe_color_union color;
|
if (util_format_is_pure_uint(tex->format))
|
desc->unpack_rgba_uint(color.ui, 0, data, 0, 1, 1);
|
else if (util_format_is_pure_sint(tex->format))
|
desc->unpack_rgba_sint(color.i, 0, data, 0, 1, 1);
|
else
|
desc->unpack_rgba_float(color.f, 0, data, 0, 1, 1);
|
|
util_clear_color_texture(pipe, tex, tex->format, &color, level,
|
box->x, box->y, box->z,
|
box->width, box->height, box->depth);
|
}
|
}
|
|
|
/**
|
* Fallback for pipe->clear_stencil() function.
|
* sw fallback doesn't look terribly useful here.
|
* Plus can't use these transfer fallbacks when clearing
|
* multisampled surfaces for instance.
|
* Clears all bound layers.
|
*/
|
void
|
util_clear_depth_stencil(struct pipe_context *pipe,
|
struct pipe_surface *dst,
|
unsigned clear_flags,
|
double depth,
|
unsigned stencil,
|
unsigned dstx, unsigned dsty,
|
unsigned width, unsigned height)
|
{
|
uint64_t zstencil;
|
unsigned max_layer;
|
|
assert(dst->texture);
|
if (!dst->texture)
|
return;
|
|
zstencil = util_pack64_z_stencil(dst->format, depth, stencil);
|
max_layer = dst->u.tex.last_layer - dst->u.tex.first_layer;
|
util_clear_depth_stencil_texture(pipe, dst->texture, dst->format,
|
clear_flags, zstencil, dst->u.tex.level,
|
dstx, dsty, dst->u.tex.first_layer,
|
width, height, max_layer + 1);
|
}
|
|
|
/* Return if the box is totally inside the resource.
|
*/
|
static boolean
|
is_box_inside_resource(const struct pipe_resource *res,
|
const struct pipe_box *box,
|
unsigned level)
|
{
|
unsigned width = 1, height = 1, depth = 1;
|
|
switch (res->target) {
|
case PIPE_BUFFER:
|
width = res->width0;
|
height = 1;
|
depth = 1;
|
break;
|
case PIPE_TEXTURE_1D:
|
width = u_minify(res->width0, level);
|
height = 1;
|
depth = 1;
|
break;
|
case PIPE_TEXTURE_2D:
|
case PIPE_TEXTURE_RECT:
|
width = u_minify(res->width0, level);
|
height = u_minify(res->height0, level);
|
depth = 1;
|
break;
|
case PIPE_TEXTURE_3D:
|
width = u_minify(res->width0, level);
|
height = u_minify(res->height0, level);
|
depth = u_minify(res->depth0, level);
|
break;
|
case PIPE_TEXTURE_CUBE:
|
width = u_minify(res->width0, level);
|
height = u_minify(res->height0, level);
|
depth = 6;
|
break;
|
case PIPE_TEXTURE_1D_ARRAY:
|
width = u_minify(res->width0, level);
|
height = 1;
|
depth = res->array_size;
|
break;
|
case PIPE_TEXTURE_2D_ARRAY:
|
width = u_minify(res->width0, level);
|
height = u_minify(res->height0, level);
|
depth = res->array_size;
|
break;
|
case PIPE_TEXTURE_CUBE_ARRAY:
|
width = u_minify(res->width0, level);
|
height = u_minify(res->height0, level);
|
depth = res->array_size;
|
assert(res->array_size % 6 == 0);
|
break;
|
case PIPE_MAX_TEXTURE_TYPES:
|
break;
|
}
|
|
return box->x >= 0 &&
|
box->x + box->width <= (int) width &&
|
box->y >= 0 &&
|
box->y + box->height <= (int) height &&
|
box->z >= 0 &&
|
box->z + box->depth <= (int) depth;
|
}
|
|
static unsigned
|
get_sample_count(const struct pipe_resource *res)
|
{
|
return res->nr_samples ? res->nr_samples : 1;
|
}
|
|
|
/**
|
* Check if a blit() command can be implemented with a resource_copy_region().
|
* If tight_format_check is true, only allow the resource_copy_region() if
|
* the blit src/dst formats are identical, ignoring the resource formats.
|
* Otherwise, check for format casting and compatibility.
|
*/
|
boolean
|
util_can_blit_via_copy_region(const struct pipe_blit_info *blit,
|
boolean tight_format_check)
|
{
|
const struct util_format_description *src_desc, *dst_desc;
|
|
src_desc = util_format_description(blit->src.resource->format);
|
dst_desc = util_format_description(blit->dst.resource->format);
|
|
if (tight_format_check) {
|
/* no format conversions allowed */
|
if (blit->src.format != blit->dst.format) {
|
return FALSE;
|
}
|
}
|
else {
|
/* do loose format compatibility checking */
|
if (blit->src.resource->format != blit->src.format ||
|
blit->dst.resource->format != blit->dst.format ||
|
!util_is_format_compatible(src_desc, dst_desc)) {
|
return FALSE;
|
}
|
}
|
|
unsigned mask = util_format_get_mask(blit->dst.format);
|
|
/* No masks, no filtering, no scissor, no blending */
|
if ((blit->mask & mask) != mask ||
|
blit->filter != PIPE_TEX_FILTER_NEAREST ||
|
blit->scissor_enable ||
|
blit->num_window_rectangles > 0 ||
|
blit->alpha_blend) {
|
return FALSE;
|
}
|
|
/* Only the src box can have negative dims for flipping */
|
assert(blit->dst.box.width >= 1);
|
assert(blit->dst.box.height >= 1);
|
assert(blit->dst.box.depth >= 1);
|
|
/* No scaling or flipping */
|
if (blit->src.box.width != blit->dst.box.width ||
|
blit->src.box.height != blit->dst.box.height ||
|
blit->src.box.depth != blit->dst.box.depth) {
|
return FALSE;
|
}
|
|
/* No out-of-bounds access. */
|
if (!is_box_inside_resource(blit->src.resource, &blit->src.box,
|
blit->src.level) ||
|
!is_box_inside_resource(blit->dst.resource, &blit->dst.box,
|
blit->dst.level)) {
|
return FALSE;
|
}
|
|
/* Sample counts must match. */
|
if (get_sample_count(blit->src.resource) !=
|
get_sample_count(blit->dst.resource)) {
|
return FALSE;
|
}
|
|
return TRUE;
|
}
|
|
|
/**
|
* Try to do a blit using resource_copy_region. The function calls
|
* resource_copy_region if the blit description is compatible with it.
|
*
|
* It returns TRUE if the blit was done using resource_copy_region.
|
*
|
* It returns FALSE otherwise and the caller must fall back to a more generic
|
* codepath for the blit operation. (e.g. by using u_blitter)
|
*/
|
boolean
|
util_try_blit_via_copy_region(struct pipe_context *ctx,
|
const struct pipe_blit_info *blit)
|
{
|
if (util_can_blit_via_copy_region(blit, FALSE)) {
|
ctx->resource_copy_region(ctx, blit->dst.resource, blit->dst.level,
|
blit->dst.box.x, blit->dst.box.y,
|
blit->dst.box.z,
|
blit->src.resource, blit->src.level,
|
&blit->src.box);
|
return TRUE;
|
}
|
else {
|
return FALSE;
|
}
|
}
|
