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Add texture modifier [brighten and modify [toalpha to modify existing texture, not read a new base

master
Perttu Ahola 2011-11-23 00:27:12 +02:00
parent 0bf3a15886
commit e8a9578774
2 changed files with 48 additions and 35 deletions
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4
src/nodedef.cpp
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@ -529,8 +529,8 @@ public:
f->drawtype = NDT_NORMAL;
f->solidness = 1;
for(u32 i=0; i<6; i++){
f->tname_tiles[i] = std::string("[noalpha:")
+ f->tname_tiles[i];
f->tname_tiles[i] = f->tname_tiles[i]
+ std::string("^[noalpha");
}
}
break;

79
src/tile.cpp
View File

@ -460,6 +460,8 @@ u32 TextureSource::getTextureId(const std::string &name)
// Draw a progress bar on the image
void make_progressbar(float value, video::IImage *image);
// Brighten image
void brighten(video::IImage *image);
/*
Generate image based on a string like "stone.png" or "[crack0".
@ -1306,53 +1308,46 @@ bool generate_image(std::string part_of_name, video::IImage *& baseimg,
make_progressbar(value, baseimg);
}
/*
"[noalpha:filename.png"
Use an image without it's alpha channel.
"[brighten"
*/
else if(part_of_name.substr(0,9) == "[brighten")
{
if(baseimg == NULL)
{
errorstream<<"generate_image(): baseimg==NULL "
<<"for part_of_name=\""<<part_of_name
<<"\", cancelling."<<std::endl;
return false;
}
brighten(baseimg);
}
/*
"[noalpha"
Make image completely opaque.
Used for the leaves texture when in old leaves mode, so
that the transparent parts don't look completely black
when simple alpha channel is used for rendering.
*/
else if(part_of_name.substr(0,8) == "[noalpha")
{
if(baseimg != NULL)
if(baseimg == NULL)
{
errorstream<<"generate_image(): baseimg!=NULL "
errorstream<<"generate_image(): baseimg==NULL "
<<"for part_of_name=\""<<part_of_name
<<"\", cancelling."<<std::endl;
return false;
}
std::string filename = part_of_name.substr(9);
std::string path = getTexturePath(filename.c_str());
/*infostream<<"generate_image(): Loading file \""<<filename
<<"\""<<std::endl;*/
core::dimension2d<u32> dim = baseimg->getDimension();
video::IImage *image = sourcecache->getOrLoad(filename, device);
if(image == NULL)
// Set alpha to full
for(u32 y=0; y<dim.Height; y++)
for(u32 x=0; x<dim.Width; x++)
{
infostream<<"generate_image(): Loading path \""
<<path<<"\" failed"<<std::endl;
}
else
{
core::dimension2d<u32> dim = image->getDimension();
baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
// Set alpha to full
for(u32 y=0; y<dim.Height; y++)
for(u32 x=0; x<dim.Width; x++)
{
video::SColor c = image->getPixel(x,y);
c.setAlpha(255);
image->setPixel(x,y,c);
}
// Blit
image->copyTo(baseimg);
image->drop();
video::SColor c = baseimg->getPixel(x,y);
c.setAlpha(255);
baseimg->setPixel(x,y,c);
}
}
/*
@ -1650,3 +1645,21 @@ void make_progressbar(float value, video::IImage *image)
}
}
void brighten(video::IImage *image)
{
if(image == NULL)
return;
core::dimension2d<u32> dim = image->getDimension();
for(u32 y=0; y<dim.Height; y++)
for(u32 x=0; x<dim.Width; x++)
{
video::SColor c = image->getPixel(x,y);
c.setRed(0.5 * 255 + 0.5 * (float)c.getRed());
c.setGreen(0.5 * 255 + 0.5 * (float)c.getGreen());
c.setBlue(0.5 * 255 + 0.5 * (float)c.getBlue());
image->setPixel(x,y,c);
}
}