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Automate texture listing for texture atlas making

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This commit is contained in:
Perttu Ahola 2011-10-18 11:31:23 +03:00
parent eae2d35ca5
commit 05ab58cd14
5 changed files with 81 additions and 44 deletions
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110
src/tile.cpp
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@ -25,6 +25,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#include "settings.h"
#include <ICameraSceneNode.h>
#include "log.h"
#include "mapnode.h" // For texture atlas making
#include "mineral.h" // For texture atlas making
/*
A cache from texture name to texture path
@ -507,52 +509,62 @@ void TextureSource::buildMainAtlas()
}
/*
A list of stuff to include in the texture atlas.
It is a single-dimensional texture atlas due to the need to tile
textures.
It should contain as much of the stuff shown in game as possible,
to minimize texture changes.
It fills up quickly, so do not add anything that isn't contained
in most MapBlocks. E.g. mese isn't suitable but stone is.
Grab list of stuff to include in the texture atlas from the
main content features
*/
core::array<std::string> sourcelist;
core::map<std::string, bool> sourcelist;
sourcelist.push_back("stone.png");
sourcelist.push_back("mud.png");
sourcelist.push_back("sand.png");
sourcelist.push_back("grass.png");
sourcelist.push_back("grass_footsteps.png");
sourcelist.push_back("tree.png");
sourcelist.push_back("tree_top.png");
sourcelist.push_back("water.png");
sourcelist.push_back("leaves.png");
sourcelist.push_back("glass.png");
sourcelist.push_back("mud.png^grass_side.png");
sourcelist.push_back("cobble.png");
sourcelist.push_back("mossycobble.png");
sourcelist.push_back("gravel.png");
sourcelist.push_back("jungletree.png");
sourcelist.push_back("stone.png^mineral_coal.png");
sourcelist.push_back("stone.png^mineral_iron.png");
for(u16 j=0; j<MAX_CONTENT+1; j++)
{
if(j == CONTENT_IGNORE || j == CONTENT_AIR)
continue;
ContentFeatures *f = &content_features(j);
for(core::map<std::string, bool>::Iterator
i = f->used_texturenames.getIterator();
i.atEnd() == false; i++)
{
std::string name = i.getNode()->getKey();
sourcelist[name] = true;
if(f->often_contains_mineral){
for(int k=1; k<MINERAL_COUNT; k++){
std::string mineraltexture = mineral_block_texture(k);
std::string fulltexture = name + "^" + mineraltexture;
sourcelist[fulltexture] = true;
}
}
}
}
infostream<<"Creating texture atlas out of textures: ";
for(core::map<std::string, bool>::Iterator
i = sourcelist.getIterator();
i.atEnd() == false; i++)
{
std::string name = i.getNode()->getKey();
infostream<<"\""<<name<<"\" ";
}
infostream<<std::endl;
// Padding to disallow texture bleeding
s32 padding = 16;
s32 column_width = 256;
s32 column_padding = 16;
/*
First pass: generate almost everything
*/
core::position2d<s32> pos_in_atlas(0,0);
pos_in_atlas.Y += padding;
pos_in_atlas.Y = padding;
for(u32 i=0; i<sourcelist.size(); i++)
for(core::map<std::string, bool>::Iterator
i = sourcelist.getIterator();
i.atEnd() == false; i++)
{
std::string name = sourcelist[i];
std::string name = i.getNode()->getKey();
/*video::IImage *img = driver->createImageFromFile(
getTexturePath(name.c_str()).c_str());
@ -586,20 +598,26 @@ void TextureSource::buildMainAtlas()
continue;
}
// Stop making atlas if atlas is full
// Wrap columns and stop making atlas if atlas is full
if(pos_in_atlas.Y + dim.Height > atlas_dim.Height)
{
infostream<<"TextureSource::buildMainAtlas(): "
<<"Atlas is full, not adding more textures."
<<std::endl;
break;
if(pos_in_atlas.X > (s32)atlas_dim.Width - 256 - padding){
errorstream<<"TextureSource::buildMainAtlas(): "
<<"Atlas is full, not adding more textures."
<<std::endl;
break;
}
pos_in_atlas.Y = padding;
pos_in_atlas.X += column_width + column_padding;
}
infostream<<"TextureSource::buildMainAtlas(): Adding \""<<name
<<"\" to texture atlas"<<std::endl;
// Tile it a few times in the X direction
u16 xwise_tiling = 16;
u16 xwise_tiling = column_width / dim.Width;
if(xwise_tiling > 16) // Limit to 16 (more gives no benefit)
xwise_tiling = 16;
for(u32 j=0; j<xwise_tiling; j++)
{
// Copy the copy to the atlas
@ -627,7 +645,7 @@ void TextureSource::buildMainAtlas()
dst_y = -y0 + pos_in_atlas.Y-1;
src_y = pos_in_atlas.Y;
}
s32 x = x0 + pos_in_atlas.X * dim.Width;
s32 x = x0 + pos_in_atlas.X;
video::SColor c = atlas_img->getPixel(x, src_y);
atlas_img->setPixel(x,dst_y,c);
}
@ -668,9 +686,11 @@ void TextureSource::buildMainAtlas()
/*
Second pass: set texture pointer in generated AtlasPointers
*/
for(u32 i=0; i<sourcelist.size(); i++)
for(core::map<std::string, bool>::Iterator
i = sourcelist.getIterator();
i.atEnd() == false; i++)
{
std::string name = sourcelist[i];
std::string name = i.getNode()->getKey();
if(m_name_to_id.find(name) == NULL)
continue;
u32 id = m_name_to_id[name];
@ -681,8 +701,12 @@ void TextureSource::buildMainAtlas()
/*
Write image to file so that it can be inspected
*/
/*driver->writeImageToFile(atlas_img,
getTexturePath("main_atlas.png").c_str());*/
/*std::string atlaspath = porting::path_userdata
+ DIR_DELIM + "generated_texture_atlas.png";
infostream<<"Removing and writing texture atlas for inspection to "
<<atlaspath<<std::endl;
fs::RecursiveDelete(atlaspath);
driver->writeImageToFile(atlas_img, atlaspath.c_str());*/
}
video::IImage* generate_image_from_scratch(std::string name,