/*
* Mesa 3-D graphics library
*
* Copyright (C) 2014 Intel Corporation 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, sublicense,
* 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 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 NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS 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.
*
* Authors:
* Jason Ekstrand <jason.ekstrand@intel.com>
*/
#include "brw_blorp.h"
#include "intel_fbo.h"
#include "intel_tex.h"
#include "intel_blit.h"
#include "intel_mipmap_tree.h"
#include "main/formats.h"
#include "main/teximage.h"
#include "drivers/common/meta.h"
static void
copy_image_with_memcpy(struct brw_context *brw,
struct intel_mipmap_tree *src_mt, int src_level,
int src_x, int src_y, int src_z,
struct intel_mipmap_tree *dst_mt, int dst_level,
int dst_x, int dst_y, int dst_z,
int src_width, int src_height)
{
bool same_slice;
void *mapped, *src_mapped, *dst_mapped;
ptrdiff_t src_stride, dst_stride, cpp;
int map_x1, map_y1, map_x2, map_y2;
GLuint src_bw, src_bh;
cpp = _mesa_get_format_bytes(src_mt->format);
_mesa_get_format_block_size(src_mt->format, &src_bw, &src_bh);
assert(src_width % src_bw == 0);
assert(src_height % src_bh == 0);
assert(src_x % src_bw == 0);
assert(src_y % src_bh == 0);
/* If we are on the same miptree, same level, and same slice, then
* intel_miptree_map won't let us map it twice. We have to do things a
* bit differently. In particular, we do a single map large enough for
* both portions and in read-write mode.
*/
same_slice = src_mt == dst_mt && src_level == dst_level && src_z == dst_z;
if (same_slice) {
assert(dst_x % src_bw == 0);
assert(dst_y % src_bh == 0);
map_x1 = MIN2(src_x, dst_x);
map_y1 = MIN2(src_y, dst_y);
map_x2 = MAX2(src_x, dst_x) + src_width;
map_y2 = MAX2(src_y, dst_y) + src_height;
intel_miptree_map(brw, src_mt, src_level, src_z,
map_x1, map_y1, map_x2 - map_x1, map_y2 - map_y1,
GL_MAP_READ_BIT | GL_MAP_WRITE_BIT,
&mapped, &src_stride);
dst_stride = src_stride;
/* Set the offsets here so we don't have to think about while looping */
src_mapped = mapped + ((src_y - map_y1) / src_bh) * src_stride +
((src_x - map_x1) / src_bw) * cpp;
dst_mapped = mapped + ((dst_y - map_y1) / src_bh) * dst_stride +
((dst_x - map_x1) / src_bw) * cpp;
} else {
intel_miptree_map(brw, src_mt, src_level, src_z,
src_x, src_y, src_width, src_height,
GL_MAP_READ_BIT, &src_mapped, &src_stride);
intel_miptree_map(brw, dst_mt, dst_level, dst_z,
dst_x, dst_y, src_width, src_height,
GL_MAP_WRITE_BIT, &dst_mapped, &dst_stride);
}
src_width /= (int)src_bw;
src_height /= (int)src_bh;
for (int i = 0; i < src_height; ++i) {
memcpy(dst_mapped, src_mapped, src_width * cpp);
src_mapped += src_stride;
dst_mapped += dst_stride;
}
if (same_slice) {
intel_miptree_unmap(brw, src_mt, src_level, src_z);
} else {
intel_miptree_unmap(brw, dst_mt, dst_level, dst_z);
intel_miptree_unmap(brw, src_mt, src_level, src_z);
}
}
static void
copy_miptrees(struct brw_context *brw,
struct intel_mipmap_tree *src_mt,
int src_x, int src_y, int src_z, unsigned src_level,
struct intel_mipmap_tree *dst_mt,
int dst_x, int dst_y, int dst_z, unsigned dst_level,
int src_width, int src_height)
{
unsigned bw, bh;
if (brw->gen >= 6) {
brw_blorp_copy_miptrees(brw,
src_mt, src_level, src_z,
dst_mt, dst_level, dst_z,
src_x, src_y, dst_x, dst_y,
src_width, src_height);
return;
}
/* We are now going to try and copy the texture using the blitter. If
* that fails, we will fall back mapping the texture and using memcpy.
* In either case, we need to do a full resolve.
*/
intel_miptree_all_slices_resolve_hiz(brw, src_mt);
intel_miptree_all_slices_resolve_depth(brw, src_mt);
intel_miptree_all_slices_resolve_color(brw, src_mt, 0);
intel_miptree_all_slices_resolve_hiz(brw, dst_mt);
intel_miptree_all_slices_resolve_depth(brw, dst_mt);
intel_miptree_all_slices_resolve_color(brw, dst_mt, 0);
_mesa_get_format_block_size(src_mt->format, &bw, &bh);
/* It's legal to have a WxH that's smaller than a compressed block. This
* happens for example when you are using a higher level LOD. For this case,
* we still want to copy the entire block, or else the decompression will be
* incorrect.
*/
if (src_width < bw)
src_width = ALIGN_NPOT(src_width, bw);
if (src_height < bh)
src_height = ALIGN_NPOT(src_height, bh);
if (intel_miptree_copy(brw, src_mt, src_level, src_z, src_x, src_y,
dst_mt, dst_level, dst_z, dst_x, dst_y,
src_width, src_height))
return;
/* This is a worst-case scenario software fallback that maps the two
* textures and does a memcpy between them.
*/
copy_image_with_memcpy(brw, src_mt, src_level,
src_x, src_y, src_z,
dst_mt, dst_level,
dst_x, dst_y, dst_z,
src_width, src_height);
}
static void
intel_copy_image_sub_data(struct gl_context *ctx,
struct gl_texture_image *src_image,
struct gl_renderbuffer *src_renderbuffer,
int src_x, int src_y, int src_z,
struct gl_texture_image *dst_image,
struct gl_renderbuffer *dst_renderbuffer,
int dst_x, int dst_y, int dst_z,
int src_width, int src_height)
{
struct brw_context *brw = brw_context(ctx);
struct intel_mipmap_tree *src_mt, *dst_mt;
unsigned src_level, dst_level;
if (src_image) {
src_mt = intel_texture_image(src_image)->mt;
src_level = src_image->Level + src_image->TexObject->MinLevel;
/* Cube maps actually have different images per face */
if (src_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
src_z = src_image->Face;
src_z += src_image->TexObject->MinLayer;
} else {
assert(src_renderbuffer);
src_mt = intel_renderbuffer(src_renderbuffer)->mt;
src_image = src_renderbuffer->TexImage;
src_level = 0;
}
if (dst_image) {
dst_mt = intel_texture_image(dst_image)->mt;
dst_level = dst_image->Level + dst_image->TexObject->MinLevel;
/* Cube maps actually have different images per face */
if (dst_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
dst_z = dst_image->Face;
dst_z += dst_image->TexObject->MinLayer;
} else {
assert(dst_renderbuffer);
dst_mt = intel_renderbuffer(dst_renderbuffer)->mt;
dst_image = dst_renderbuffer->TexImage;
dst_level = 0;
}
copy_miptrees(brw, src_mt, src_x, src_y, src_z, src_level,
dst_mt, dst_x, dst_y, dst_z, dst_level,
src_width, src_height);
/* CopyImage only works for equal formats, texture view equivalence
* classes, and a couple special cases for compressed textures.
*
* Notably, GL_DEPTH_STENCIL does not appear in any equivalence
* classes, so we know the formats must be the same, and thus both
* will either have stencil, or not. They can't be mismatched.
*/
assert((src_mt->stencil_mt != NULL) == (dst_mt->stencil_mt != NULL));
if (dst_mt->stencil_mt) {
copy_miptrees(brw, src_mt->stencil_mt, src_x, src_y, src_z, src_level,
dst_mt->stencil_mt, dst_x, dst_y, dst_z, dst_level,
src_width, src_height);
}
}
void
intelInitCopyImageFuncs(struct dd_function_table *functions)
{
functions->CopyImageSubData = intel_copy_image_sub_data;
}