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/*
Minetest-c55
Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#
include
"
mapblock_mesh.h
"
#
include
"
light.h
"
#
include
"
mapblock.h
"
#
include
"
map.h
"
#
include
"
main.h
"
//
For g_settings and g_texturesource
#
include
"
settings.h
"
#
include
"
profiler.h
"
#
include
"
nodedef.h
"
#
include
"
tile.h
"
#
include
"
gamedef.h
"
#
include
"
content_mapblock.h
"
#
include
"
mineral.h
"
//
For mineral_block_texture
void
MeshMakeData::fill
(
u32
daynight_ratio, MapBlock *block)
{
m_daynight_ratio = daynight_ratio;
m_blockpos = block->
getPos
();
v3s16 blockpos_nodes = m_blockpos*
MAP_BLOCKSIZE
;
/*
There is no harm not copying the TempMods of the neighbors
because they are already copied to this block
*/
m_temp_mods.
clear
();
block->
copyTempMods
(m_temp_mods);
/*
Copy data
*/
//
Allocate this block + neighbors
m_vmanip.
clear
();
m_vmanip.
addArea
(
VoxelArea
(blockpos_nodes-
v3s16
(
1
,
1
,
1
)*
MAP_BLOCKSIZE
,
blockpos_nodes+
v3s16
(
1
,
1
,
1
)*
MAP_BLOCKSIZE
*
2
-
v3s16
(
1
,
1
,
1
)));
{
//
TimeTaker timer("copy central block data");
//
0ms
//
Copy our data
block->
copyTo
(m_vmanip);
}
{
//
TimeTaker timer("copy neighbor block data");
//
0ms
/*
Copy neighbors. This is lightning fast.
Copying only the borders would be *very* slow.
*/
//
Get map
Map *map = block->
getParent
();
for
(
u16
i=
0
; i<
6
; i++)
{
const
v3s16 &dir = g_6dirs[i];
v3s16 bp = m_blockpos + dir;
MapBlock *b = map->
getBlockNoCreateNoEx
(bp);
if
(b)
b->
copyTo
(m_vmanip);
}
}
}
/*
vertex_dirs: v3s16[4]
*/
static
void
getNodeVertexDirs
(v3s16 dir, v3s16 *vertex_dirs)
{
/*
If looked from outside the node towards the face, the corners are:
0: bottom-right
1: bottom-left
2: top-left
3: top-right
*/
if
(dir ==
v3s16
(
0
,
0
,
1
))
{
//
If looking towards z+, this is the face that is behind
//
the center point, facing towards z+.
vertex_dirs[
0
] =
v3s16
(-
1
,-
1
,
1
);
vertex_dirs[
1
] =
v3s16
(
1
,-
1
,
1
);
vertex_dirs[
2
] =
v3s16
(
1
,
1
,
1
);
vertex_dirs[
3
] =
v3s16
(-
1
,
1
,
1
);
}
else
if
(dir ==
v3s16
(
0
,
0
,-
1
))
{
//
faces towards Z-
vertex_dirs[
0
] =
v3s16
(
1
,-
1
,-
1
);
vertex_dirs[
1
] =
v3s16
(-
1
,-
1
,-
1
);
vertex_dirs[
2
] =
v3s16
(-
1
,
1
,-
1
);
vertex_dirs[
3
] =
v3s16
(
1
,
1
,-
1
);
}
else
if
(dir ==
v3s16
(
1
,
0
,
0
))
{
//
faces towards X+
vertex_dirs[
0
] =
v3s16
(
1
,-
1
,
1
);
vertex_dirs[
1
] =
v3s16
(
1
,-
1
,-
1
);
vertex_dirs[
2
] =
v3s16
(
1
,
1
,-
1
);
vertex_dirs[
3
] =
v3s16
(
1
,
1
,
1
);
}
else
if
(dir ==
v3s16
(-
1
,
0
,
0
))
{
//
faces towards X-
vertex_dirs[
0
] =
v3s16
(-
1
,-
1
,-
1
);
vertex_dirs[
1
] =
v3s16
(-
1
,-
1
,
1
);
vertex_dirs[
2
] =
v3s16
(-
1
,
1
,
1
);
vertex_dirs[
3
] =
v3s16
(-
1
,
1
,-
1
);
}
else
if
(dir ==
v3s16
(
0
,
1
,
0
))
{
//
faces towards Y+ (assume Z- as "down" in texture)
vertex_dirs[
0
] =
v3s16
(
1
,
1
,-
1
);
vertex_dirs[
1
] =
v3s16
(-
1
,
1
,-
1
);
vertex_dirs[
2
] =
v3s16
(-
1
,
1
,
1
);
vertex_dirs[
3
] =
v3s16
(
1
,
1
,
1
);
}
else
if
(dir ==
v3s16
(
0
,-
1
,
0
))
{
//
faces towards Y- (assume Z+ as "down" in texture)
vertex_dirs[
0
] =
v3s16
(
1
,-
1
,
1
);
vertex_dirs[
1
] =
v3s16
(-
1
,-
1
,
1
);
vertex_dirs[
2
] =
v3s16
(-
1
,-
1
,-
1
);
vertex_dirs[
3
] =
v3s16
(
1
,-
1
,-
1
);
}
}
video::SColor
MapBlock_LightColor
(
u8
alpha,
u8
light)
{
#
if
0
return video::SColor(alpha,light,light,light);
#
endif
//
return video::SColor(alpha,light,light,MYMAX(0, (s16)light-25)+25);
/*
return video::SColor(alpha,light,light,MYMAX(0,
pow((float)light/255.0, 0.8)*255.0));
*/
#
if
1
//
Emphase blue a bit in darker places
float
lim =
80
;
float
power =
0.8
;
if
(light > lim)
return
video::SColor
(alpha,light,light,light);
else
return
video::SColor
(alpha,light,light,
MYMAX
(
0
,
pow
((
float
)light/lim, power)*lim));
#
endif
}
struct
FastFace
{
TileSpec tile;
video::S3DVertex vertices[
4
];
//
Precalculated vertices
};
static
void
makeFastFace
(TileSpec tile,
u8
li0,
u8
li1,
u8
li2,
u8
li3, v3f p,
v3s16 dir, v3f scale, v3f posRelative_f,
core::array<FastFace> &dest)
{
FastFace face;
//
Position is at the center of the cube.
v3f pos = p *
BS
;
posRelative_f *=
BS
;
v3f vertex_pos[
4
];
v3s16 vertex_dirs[
4
];
getNodeVertexDirs
(dir, vertex_dirs);
for
(
u16
i=
0
; i<
4
; i++)
{
vertex_pos[i] =
v3f
(
BS
/
2
*vertex_dirs[i].
X
,
BS
/
2
*vertex_dirs[i].
Y
,
BS
/
2
*vertex_dirs[i].
Z
);
}
for
(
u16
i=
0
; i<
4
; i++)
{
vertex_pos[i].
X
*= scale.
X
;
vertex_pos[i].
Y
*= scale.
Y
;
vertex_pos[i].
Z
*= scale.
Z
;
vertex_pos[i] += pos + posRelative_f;
}
f32
abs_scale =
1
.;
if
(scale.
X
<
0.999
|| scale.
X
>
1.001
) abs_scale = scale.
X
;
else
if
(scale.
Y
<
0.999
|| scale.
Y
>
1.001
) abs_scale = scale.
Y
;
else
if
(scale.
Z
<
0.999
|| scale.
Z
>
1.001
) abs_scale = scale.
Z
;
v3f zerovector =
v3f
(
0
,
0
,
0
);
u8
alpha = tile.
alpha
;
/*
u8 alpha = 255;
if(tile.id == TILE_WATER)
alpha = WATER_ALPHA;
*/
float
x0 = tile.
texture
.
pos
.
X
;
float
y0 = tile.
texture
.
pos
.
Y
;
float
w = tile.
texture
.
size
.
X
;
float
h = tile.
texture
.
size
.
Y
;
/*
video::SColor c = MapBlock_LightColor(alpha, li);
face.vertices[0] = video::S3DVertex(vertex_pos[0], v3f(0,1,0), c,
core::vector2d<f32>(x0+w*abs_scale, y0+h));
face.vertices[1] = video::S3DVertex(vertex_pos[1], v3f(0,1,0), c,
core::vector2d<f32>(x0, y0+h));
face.vertices[2] = video::S3DVertex(vertex_pos[2], v3f(0,1,0), c,
core::vector2d<f32>(x0, y0));
face.vertices[3] = video::S3DVertex(vertex_pos[3], v3f(0,1,0), c,
core::vector2d<f32>(x0+w*abs_scale, y0));
*/
face.
vertices
[
0
] =
video::S3DVertex
(vertex_pos[
0
],
v3f
(
0
,
1
,
0
),
MapBlock_LightColor
(alpha, li0),
core::vector2d<
f32
>(x0+w*abs_scale, y0+h));
face.
vertices
[
1
] =
video::S3DVertex
(vertex_pos[
1
],
v3f
(
0
,
1
,
0
),
MapBlock_LightColor
(alpha, li1),
core::vector2d<
f32
>(x0, y0+h));
face.
vertices
[
2
] =
video::S3DVertex
(vertex_pos[
2
],
v3f
(
0
,
1
,
0
),
MapBlock_LightColor
(alpha, li2),
core::vector2d<
f32
>(x0, y0));
face.
vertices
[
3
] =
video::S3DVertex
(vertex_pos[
3
],
v3f
(
0
,
1
,
0
),
MapBlock_LightColor
(alpha, li3),
core::vector2d<
f32
>(x0+w*abs_scale, y0));
face.
tile
= tile;
//
DEBUG
//
f->tile = TILE_STONE;
dest.
push_back
(face);
}
static
TileSpec
getTile
(
const
MapNode &node, v3s16 dir,
ITextureSource *tsrc, INodeDefManager *nodemgr)
{
const
ContentFeatures &f = nodemgr->
get
(node);
if
(f.
param_type
==
CPT_FACEDIR_SIMPLE
)
dir =
facedir_rotate
(node.
param1
, dir);
TileSpec spec;
s32 dir_i = -
1
;
if
(dir ==
v3s16
(
0
,
0
,
0
))
dir_i = -
1
;
else
if
(dir ==
v3s16
(
0
,
1
,
0
))
dir_i =
0
;
else
if
(dir ==
v3s16
(
0
,-
1
,
0
))
dir_i =
1
;
else
if
(dir ==
v3s16
(
1
,
0
,
0
))
dir_i =
2
;
else
if
(dir ==
v3s16
(-
1
,
0
,
0
))
dir_i =
3
;
else
if
(dir ==
v3s16
(
0
,
0
,
1
))
dir_i =
4
;
else
if
(dir ==
v3s16
(
0
,
0
,-
1
))
dir_i =
5
;
if
(dir_i == -
1
)
//
Non-directional
spec = f.
tiles
[
0
];
else
spec = f.
tiles
[dir_i];
/*
If it contains some mineral, change texture id
*/
if
(f.
param_type
==
CPT_MINERAL
&& tsrc)
{
u8
mineral = node.
getMineral
(nodemgr);
std::string mineral_texture_name =
mineral_block_texture
(mineral);
if
(mineral_texture_name !=
"
"
)
{
u32
orig_id = spec.
texture
.
id
;
std::string texture_name = tsrc->
getTextureName
(orig_id);
//
texture_name += "^blit:";
texture_name +=
"
^
"
;
texture_name += mineral_texture_name;
u32
new_id = tsrc->
getTextureId
(texture_name);
spec.
texture
= tsrc->
getTexture
(new_id);
}
}
return
spec;
}
/*
Gets node tile from any place relative to block.
Returns TILE_NODE if doesn't exist or should not be drawn.
*/
static
TileSpec
getNodeTile
(MapNode mn, v3s16 p, v3s16 face_dir,
NodeModMap &temp_mods, ITextureSource *tsrc, INodeDefManager *ndef)
{
TileSpec spec;
spec =
getTile
(mn, face_dir, tsrc, ndef);
/*
Check temporary modifications on this node
*/
/*
core::map<v3s16, NodeMod>::Node *n;
n = m_temp_mods.find(p);
// If modified
if(n != NULL)
{
struct NodeMod mod = n->getValue();
*/
NodeMod mod;
if
(temp_mods.
get
(p, &mod))
{
if
(mod.
type
==
NODEMOD_CHANGECONTENT
)
{
MapNode
mn2
(mod.
param
);
spec =
getTile
(mn2, face_dir, tsrc, ndef);
}
if
(mod.
type
==
NODEMOD_CRACK
)
{
/*
Get texture id, translate it to name, append stuff to
name, get texture id
*/
//
Get original texture name
u32
orig_id = spec.
texture
.
id
;
std::string orig_name = tsrc->
getTextureName
(orig_id);
//
Create new texture name
std::ostringstream os;
os<<orig_name<<
"
^[crack
"
<<mod.
param
;
//
Get new texture
u32
new_id = tsrc->
getTextureId
(os.
str
());
/*
dstream<<"MapBlock::getNodeTile(): Switching from "
<<orig_name<<" to "<<os.str()<<" ("
<<orig_id<<" to "<<new_id<<")"<<std::endl;
*/
spec.
texture
= tsrc->
getTexture
(new_id);
}
}
return
spec;
}
static
content_t
getNodeContent
(v3s16 p, MapNode mn, NodeModMap &temp_mods)
{
/*
Check temporary modifications on this node
*/
/*
core::map<v3s16, NodeMod>::Node *n;
n = m_temp_mods.find(p);
// If modified
if(n != NULL)
{
struct NodeMod mod = n->getValue();
*/
NodeMod mod;
if
(temp_mods.
get
(p, &mod))
{
if
(mod.
type
==
NODEMOD_CHANGECONTENT
)
{
//
Overrides content
return
mod.
param
;
}
if
(mod.
type
==
NODEMOD_CRACK
)
{
/*
Content doesn't change.
face_contents works just like it should, because
there should not be faces between differently cracked
nodes.
If a semi-transparent node is cracked in front an
another one, it really doesn't matter whether there
is a cracked face drawn in between or not.
*/
}
}
return
mn.
getContent
();
}
v3s16 dirs8[
8
] = {
v3s16
(
0
,
0
,
0
),
v3s16
(
0
,
0
,
1
),
v3s16
(
0
,
1
,
0
),
v3s16
(
0
,
1
,
1
),
v3s16
(
1
,
0
,
0
),
v3s16
(
1
,
1
,
0
),
v3s16
(
1
,
0
,
1
),
v3s16
(
1
,
1
,
1
),
};
//
Calculate lighting at the XYZ- corner of p
static
u8
getSmoothLight
(v3s16 p, VoxelManipulator &vmanip,
u32
daynight_ratio,
INodeDefManager *ndef)
{
u16
ambient_occlusion =
0
;
u16
light =
0
;
u16
light_count =
0
;
for
(
u32
i=
0
; i<
8
; i++)
{
MapNode n = vmanip.
getNodeNoEx
(p - dirs8[i]);
if
(ndef->
get
(n).
param_type
==
CPT_LIGHT
//
Fast-style leaves look better this way
&& ndef->
get
(n).
solidness
!=
2
)
{
light +=
decode_light
(n.
getLightBlend
(daynight_ratio, ndef));
light_count++;
}
else
{
if
(n.
getContent
() !=
CONTENT_IGNORE
)
ambient_occlusion++;
}
}
if
(light_count ==
0
)
return
255
;
light /= light_count;
if
(ambient_occlusion >
4
)
{
ambient_occlusion -=
4
;
light = (
float
)light / ((
float
)ambient_occlusion *
0.5
+
1.0
);
}
return
light;
}
//
Calculate lighting at the given corner of p
static
u8
getSmoothLight
(v3s16 p, v3s16 corner,
VoxelManipulator &vmanip,
u32
daynight_ratio, INodeDefManager *ndef)
{
if
(corner.
X
==
1
) p.
X
+=
1
;
else
assert
(corner.
X
== -
1
);
if
(corner.
Y
==
1
) p.
Y
+=
1
;
else
assert
(corner.
Y
== -
1
);
if
(corner.
Z
==
1
) p.
Z
+=
1
;
else
assert
(corner.
Z
== -
1
);
return
getSmoothLight
(p, vmanip, daynight_ratio, ndef);
}
static
void
getTileInfo
(
//
Input:
v3s16 blockpos_nodes,
v3s16 p,
v3s16 face_dir,
u32
daynight_ratio,
VoxelManipulator &vmanip,
NodeModMap &temp_mods,
bool
smooth_lighting,
IGameDef *gamedef,
//
Output:
bool
&makes_face,
v3s16 &p_corrected,
v3s16 &face_dir_corrected,
u8
*lights,
TileSpec &tile
)
{
ITextureSource *tsrc = gamedef->
tsrc
();
INodeDefManager *ndef = gamedef->
ndef
();
MapNode n0 = vmanip.
getNodeNoEx
(blockpos_nodes + p);
MapNode n1 = vmanip.
getNodeNoEx
(blockpos_nodes + p + face_dir);
TileSpec tile0 =
getNodeTile
(n0, p, face_dir, temp_mods, tsrc, ndef);
TileSpec tile1 =
getNodeTile
(n1, p + face_dir, -face_dir, temp_mods, tsrc, ndef);
//
This is hackish
content_t
content0 =
getNodeContent
(p, n0, temp_mods);
content_t
content1 =
getNodeContent
(p + face_dir, n1, temp_mods);
bool
equivalent =
false
;
u8
mf =
face_contents
(content0, content1, &equivalent, ndef);
if
(mf ==
0
)
{
makes_face =
false
;
return
;
}
makes_face =
true
;
if
(mf ==
1
)
{
tile = tile0;
p_corrected = p;
face_dir_corrected = face_dir;
}
else
{
tile = tile1;
p_corrected = p + face_dir;
face_dir_corrected = -face_dir;
}
//
eg. water and glass
if
(equivalent)
tile.
material_flags
|=
MATERIAL_FLAG_BACKFACE_CULLING
;
if
(smooth_lighting ==
false
)
{
lights[
0
] = lights[
1
] = lights[
2
] = lights[
3
] =
decode_light
(
getFaceLight
(daynight_ratio, n0, n1, face_dir, ndef));
}
else
{
v3s16 vertex_dirs[
4
];
getNodeVertexDirs
(face_dir_corrected, vertex_dirs);
for
(
u16
i=
0
; i<
4
; i++)
{
lights[i] =
getSmoothLight
(blockpos_nodes + p_corrected,
vertex_dirs[i], vmanip, daynight_ratio, ndef);
}
}
return
;
}
/*
startpos:
translate_dir: unit vector with only one of x, y or z
face_dir: unit vector with only one of x, y or z
*/
static
void
updateFastFaceRow
(
u32
daynight_ratio,
v3f posRelative_f,
v3s16 startpos,
u16
length,
v3s16 translate_dir,
v3f translate_dir_f,
v3s16 face_dir,
v3f face_dir_f,
core::array<FastFace> &dest,
NodeModMap &temp_mods,
VoxelManipulator &vmanip,
v3s16 blockpos_nodes,
bool
smooth_lighting,
IGameDef *gamedef)
{
v3s16 p = startpos;
u16
continuous_tiles_count =
0
;
bool
makes_face =
false
;
v3s16 p_corrected;
v3s16 face_dir_corrected;
u8
lights[
4
] = {
0
,
0
,
0
,
0
};
TileSpec tile;
getTileInfo
(blockpos_nodes, p, face_dir, daynight_ratio,
vmanip, temp_mods, smooth_lighting, gamedef,
makes_face, p_corrected, face_dir_corrected, lights, tile);
for
(
u16
j=
0
; j<length; j++)
{
//
If tiling can be done, this is set to false in the next step
bool
next_is_different =
true
;
v3s16 p_next;
bool
next_makes_face =
false
;
v3s16 next_p_corrected;
v3s16 next_face_dir_corrected;
u8
next_lights[
4
] = {
0
,
0
,
0
,
0
};
TileSpec next_tile;
//
If at last position, there is nothing to compare to and
//
the face must be drawn anyway
if
(j != length -
1
)
{
p_next = p + translate_dir;
getTileInfo
(blockpos_nodes, p_next, face_dir, daynight_ratio,
vmanip, temp_mods, smooth_lighting, gamedef,
next_makes_face, next_p_corrected,
next_face_dir_corrected, next_lights,
next_tile);
if
(next_makes_face == makes_face
&& next_p_corrected == p_corrected + translate_dir
&& next_face_dir_corrected == face_dir_corrected
&& next_lights[
0
] == lights[
0
]
&& next_lights[
1
] == lights[
1
]
&& next_lights[
2
] == lights[
2
]
&& next_lights[
3
] == lights[
3
]
&& next_tile == tile)
{
next_is_different =
false
;
}
else
{
/*
if(makes_face){
g_profiler->add("Meshgen: diff: next_makes_face != makes_face",
next_makes_face != makes_face ? 1 : 0);
g_profiler->add("Meshgen: diff: n_p_corr != p_corr + t_dir",
(next_p_corrected != p_corrected + translate_dir) ? 1 : 0);
g_profiler->add("Meshgen: diff: next_f_dir_corr != f_dir_corr",
next_face_dir_corrected != face_dir_corrected ? 1 : 0);
g_profiler->add("Meshgen: diff: next_lights[] != lights[]",
(next_lights[0] != lights[0] ||
next_lights[0] != lights[0] ||
next_lights[0] != lights[0] ||
next_lights[0] != lights[0]) ? 1 : 0);
g_profiler->add("Meshgen: diff: !(next_tile == tile)",
!(next_tile == tile) ? 1 : 0);
}
*/
}
/*
g_profiler->add("Meshgen: Total faces checked", 1);
if(makes_face)
g_profiler->add("Meshgen: Total makes_face checked", 1);
*/
}
else
{
/*
if(makes_face)
g_profiler->add("Meshgen: diff: last position", 1);
*/
}
continuous_tiles_count++;
//
This is set to true if the texture doesn't allow more tiling
bool
end_of_texture =
false
;
/*
If there is no texture, it can be tiled infinitely.
If tiled==0, it means the texture can be tiled infinitely.
Otherwise check tiled agains continuous_tiles_count.
*/
if
(tile.
texture
.
atlas
!=
NULL
&& tile.
texture
.
tiled
!=
0
)
{
if
(tile.
texture
.
tiled
<= continuous_tiles_count)
end_of_texture =
true
;
}
//
Do this to disable tiling textures
//
end_of_texture = true; //DEBUG
if
(next_is_different || end_of_texture)
{
/*
Create a face if there should be one
*/
if
(makes_face)
{
//
Floating point conversion of the position vector
v3f
pf
(p_corrected.
X
, p_corrected.
Y
, p_corrected.
Z
);
//
Center point of face (kind of)
v3f sp = pf - ((
f32
)continuous_tiles_count /
2
. -
0.5
) * translate_dir_f;
if
(continuous_tiles_count !=
1
)
sp += translate_dir_f;
v3f
scale
(
1
,
1
,
1
);
if
(translate_dir.
X
!=
0
)
{
scale.
X
= continuous_tiles_count;
}
if
(translate_dir.
Y
!=
0
)
{
scale.
Y
= continuous_tiles_count;
}
if
(translate_dir.
Z
!=
0
)
{
scale.
Z
= continuous_tiles_count;
}
makeFastFace
(tile, lights[
0
], lights[
1
], lights[
2
], lights[
3
],
sp, face_dir_corrected, scale,
posRelative_f, dest);
g_profiler->
avg
(
"
Meshgen: faces drawn by tiling
"
,
0
);
for
(
int
i=
1
; i<continuous_tiles_count; i++){
g_profiler->
avg
(
"
Meshgen: faces drawn by tiling
"
,
1
);
}
}
continuous_tiles_count =
0
;
makes_face = next_makes_face;
p_corrected = next_p_corrected;
face_dir_corrected = next_face_dir_corrected;
lights[
0
] = next_lights[
0
];
lights[
1
] = next_lights[
1
];
lights[
2
] = next_lights[
2
];
lights[
3
] = next_lights[
3
];
tile = next_tile;
}
p = p_next;
}
}
scene::SMesh*
makeMapBlockMesh
(MeshMakeData *data, IGameDef *gamedef)
{
//
4-21ms for MAP_BLOCKSIZE=16
//
24-155ms for MAP_BLOCKSIZE=32
//
TimeTaker timer1("makeMapBlockMesh()");
core::array<FastFace> fastfaces_new;
v3s16 blockpos_nodes = data->
m_blockpos
*
MAP_BLOCKSIZE
;
//
floating point conversion
v3f
posRelative_f
(blockpos_nodes.
X
, blockpos_nodes.
Y
, blockpos_nodes.
Z
);
/*
Some settings
*/
//
bool new_style_water = g_settings->getBool("new_style_water");
//
bool new_style_leaves = g_settings->getBool("new_style_leaves");
bool
smooth_lighting = g_settings->
getBool
(
"
smooth_lighting
"
);
/*
We are including the faces of the trailing edges of the block.
This means that when something changes, the caller must
also update the meshes of the blocks at the leading edges.
NOTE: This is the slowest part of this method.
*/
{
//
4-23ms for MAP_BLOCKSIZE=16
//
TimeTaker timer2("updateMesh() collect");
/*
Go through every y,z and get top(y+) faces in rows of x+
*/
for
(s16 y=
0
; y<
MAP_BLOCKSIZE
; y++){
for
(s16 z=
0
; z<
MAP_BLOCKSIZE
; z++){
updateFastFaceRow
(data->
m_daynight_ratio
, posRelative_f,
v3s16
(
0
,y,z),
MAP_BLOCKSIZE
,
v3s16
(
1
,
0
,
0
),
//
dir
v3f
(
1
,
0
,
0
),
v3s16
(
0
,
1
,
0
),
//
face dir
v3f
(
0
,
1
,
0
),
fastfaces_new,
data->
m_temp_mods
,
data->
m_vmanip
,
blockpos_nodes,
smooth_lighting,
gamedef);
}
}
/*
Go through every x,y and get right(x+) faces in rows of z+
*/
for
(s16 x=
0
; x<
MAP_BLOCKSIZE
; x++){
for
(s16 y=
0
; y<
MAP_BLOCKSIZE
; y++){
updateFastFaceRow
(data->
m_daynight_ratio
, posRelative_f,
v3s16
(x,y,
0
),
MAP_BLOCKSIZE
,
v3s16
(
0
,
0
,
1
),
v3f
(
0
,
0
,
1
),
v3s16
(
1
,
0
,
0
),
v3f
(
1
,
0
,
0
),
fastfaces_new,
data->
m_temp_mods
,
data->
m_vmanip
,
blockpos_nodes,
smooth_lighting,
gamedef);
}
}
/*
Go through every y,z and get back(z+) faces in rows of x+
*/
for
(s16 z=
0
; z<
MAP_BLOCKSIZE
; z++){
for
(s16 y=
0
; y<
MAP_BLOCKSIZE
; y++){
updateFastFaceRow
(data->
m_daynight_ratio
, posRelative_f,
v3s16
(
0
,y,z),
MAP_BLOCKSIZE
,
v3s16
(
1
,
0
,
0
),
v3f
(
1
,
0
,
0
),
v3s16
(
0
,
0
,
1
),
v3f
(
0
,
0
,
1
),
fastfaces_new,
data->
m_temp_mods
,
data->
m_vmanip
,
blockpos_nodes,
smooth_lighting,
gamedef);
}
}
}
//
End of slow part
/*
Convert FastFaces to SMesh
*/
MeshCollector collector;
if
(fastfaces_new.
size
() >
0
)
{
//
avg 0ms (100ms spikes when loading textures the first time)
//
TimeTaker timer2("updateMesh() mesh building");
video::SMaterial material;
material.
setFlag
(video::
EMF_LIGHTING
,
false
);
material.
setFlag
(video::
EMF_BACK_FACE_CULLING
,
true
);
material.
setFlag
(video::
EMF_BILINEAR_FILTER
,
false
);
material.
setFlag
(video::
EMF_FOG_ENABLE
,
true
);
//
material.setFlag(video::EMF_ANTI_ALIASING, video::EAAM_OFF);
//
material.setFlag(video::EMF_ANTI_ALIASING, video::EAAM_SIMPLE);
material.
MaterialType
= video::
EMT_TRANSPARENT_ALPHA_CHANNEL_REF
;
for
(
u32
i=
0
; i<fastfaces_new.
size
(); i++)
{
FastFace &f = fastfaces_new[i];
const
u16
indices[] = {
0
,
1
,
2
,
2
,
3
,
0
};
const
u16
indices_alternate[] = {
0
,
1
,
3
,
2
,
3
,
1
};
video::ITexture *texture = f.
tile
.
texture
.
atlas
;
if
(texture ==
NULL
)
continue
;
material.
setTexture
(
0
, texture);
f.
tile
.
applyMaterialOptions
(material);
const
u16
*indices_p = indices;
/*
Revert triangles for nicer looking gradient if vertices
1 and 3 have same color or 0 and 2 have different color.
*/
if
(f.
vertices
[
0
].
Color
!= f.
vertices
[
2
].
Color
|| f.
vertices
[
1
].
Color
== f.
vertices
[
3
].
Color
)
indices_p = indices_alternate;
collector.
append
(material, f.
vertices
,
4
, indices_p,
6
);
}
}
/*
Add special graphics:
- torches
- flowing water
- fences
- whatever
*/
mapblock_mesh_generate_special
(data, collector, gamedef);
/*
Add stuff from collector to mesh
*/
scene::SMesh *mesh_new =
NULL
;
mesh_new =
new
scene::SMesh
();
collector.
fillMesh
(mesh_new);
/*
Do some stuff to the mesh
*/
mesh_new->
recalculateBoundingBox
();
/*
Delete new mesh if it is empty
*/
if
(mesh_new->
getMeshBufferCount
() ==
0
)
{
mesh_new->
drop
();
mesh_new =
NULL
;
}
if
(mesh_new)
{
#
if
0
// Usually 1-700 faces and 1-7 materials
std::cout<<"Updated MapBlock has "<<fastfaces_new.size()<<" faces "
<<"and uses "<<mesh_new->getMeshBufferCount()
<<" materials (meshbuffers)"<<std::endl;
#
endif
//
Use VBO for mesh (this just would set this for ever buffer)
//
This will lead to infinite memory usage because or irrlicht.
//
mesh_new->setHardwareMappingHint(scene::EHM_STATIC);
/*
NOTE: If that is enabled, some kind of a queue to the main
thread should be made which would call irrlicht to delete
the hardware buffer and then delete the mesh
*/
}
return
mesh_new;
//
std::cout<<"added "<<fastfaces.getSize()<<" faces."<<std::endl;
}
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