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Fix composite textures with texture_min_size. Moved upscaling of text…

…ures to later in the process, when images are converted to textures, instead of right after image load, so the original image is unmodified for generateImagePart.
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Warr1024 authored and Zeno- committed Mar 21, 2015
1 parent 709f4a5 commit 837a2e1e5fef788cf108e036c27d092cedb3982f
Showing with 44 additions and 32 deletions.
  1. +44 −32 src/client/tile.cpp
@@ -182,6 +182,42 @@ struct TextureInfo
}
};

/* Upscale textures to user's requested minimum size. This is a trick to make
* filters look as good on low-res textures as on high-res ones, by making
* low-res textures BECOME high-res ones. This is helpful for worlds that
* mix high- and low-res textures, or for mods with least-common-denominator
* textures that don't have the resources to offer high-res alternatives.
*/
video::IImage *textureMinSizeUpscale(video::IVideoDriver *driver, video::IImage *orig) {
if(orig == NULL)
return orig;
s32 scaleto = g_settings->getS32("texture_min_size");
if (scaleto > 0) {

/* Calculate scaling needed to make the shortest texture dimension
* equal to the target minimum. If e.g. this is a vertical frames
* animation, the short dimension will be the real size.
*/
const core::dimension2d<u32> dim = orig->getDimension();
u32 xscale = scaleto / dim.Width;
u32 yscale = scaleto / dim.Height;
u32 scale = (xscale > yscale) ? xscale : yscale;

// Never downscale; only scale up by 2x or more.
if (scale > 1) {
u32 w = scale * dim.Width;
u32 h = scale * dim.Height;
const core::dimension2d<u32> newdim = core::dimension2d<u32>(w, h);
video::IImage *newimg = driver->createImage(
orig->getColorFormat(), newdim);
orig->copyToScaling(newimg);
return newimg;
}
}

return orig;
}

/*
SourceImageCache: A cache used for storing source images.
*/
@@ -276,36 +312,6 @@ class SourceImageCache
}
}

/* Upscale textures to user's requested minimum size. This is a trick to make
* filters look as good on low-res textures as on high-res ones, by making
* low-res textures BECOME high-res ones. This is helpful for worlds that
* mix high- and low-res textures, or for mods with least-common-denominator
* textures that don't have the resources to offer high-res alternatives.
*/
s32 scaleto = g_settings->getS32("texture_min_size");
if (scaleto > 0) {

/* Calculate scaling needed to make the shortest texture dimension
* equal to the target minimum. If e.g. this is a vertical frames
* animation, the short dimension will be the real size.
*/
const core::dimension2d<u32> dim = toadd->getDimension();
u32 xscale = scaleto / dim.Width;
u32 yscale = scaleto / dim.Height;
u32 scale = (xscale > yscale) ? xscale : yscale;

// Never downscale; only scale up by 2x or more.
if (scale > 1) {
u32 w = scale * dim.Width;
u32 h = scale * dim.Height;
const core::dimension2d<u32> newdim = core::dimension2d<u32>(w, h);
video::IImage *newimg = driver->createImage(
toadd->getColorFormat(), newdim);
toadd->copyToScaling(newimg);
toadd = newimg;
}
}

if (need_to_grab)
toadd->grab();
m_images[name] = toadd;
@@ -682,7 +688,8 @@ u32 TextureSource::generateTexture(const std::string &name)
video::IVideoDriver *driver = m_device->getVideoDriver();
sanity_check(driver);

video::IImage *img = generateImage(name);
video::IImage *origimg = generateImage(name);
video::IImage *img = textureMinSizeUpscale(driver, origimg);

video::ITexture *tex = NULL;

@@ -693,6 +700,8 @@ u32 TextureSource::generateTexture(const std::string &name)
// Create texture from resulting image
tex = driver->addTexture(name.c_str(), img);
img->drop();
if((origimg != NULL) && (img != origimg))
origimg->drop();
}

/*
@@ -783,7 +792,8 @@ void TextureSource::rebuildImagesAndTextures()
// Recreate textures
for (u32 i=0; i<m_textureinfo_cache.size(); i++){
TextureInfo *ti = &m_textureinfo_cache[i];
video::IImage *img = generateImage(ti->name);
video::IImage *origimg = generateImage(ti->name);
video::IImage *img = textureMinSizeUpscale(driver, origimg);
#ifdef __ANDROID__
img = Align2Npot2(img, driver);
sanity_check(img->getDimension().Height == npot2(img->getDimension().Height));
@@ -794,6 +804,8 @@ void TextureSource::rebuildImagesAndTextures()
if (img) {
t = driver->addTexture(ti->name.c_str(), img);
img->drop();
if(origimg && (origimg != img))
origimg->drop();
}
video::ITexture *t_old = ti->texture;
// Replace texture

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