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Render nodeboxes with opaque material if possible (#10122)

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sfan5 2020-08-12 11:52:50 +02:00 • committed by GitHub
parent 1c38027c3a
commit fff0393187
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 68 additions and 3 deletions
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57
src/nodedef.cpp
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@ -695,9 +695,54 @@ static void fillTileAttribs(ITextureSource *tsrc, TileLayer *layer,
}
}
}
#endif
#ifndef SERVER
bool ContentFeatures::textureAlphaCheck(ITextureSource *tsrc, const TileDef *tiles, int length)
{
video::IVideoDriver *driver = RenderingEngine::get_video_driver();
static thread_local bool long_warning_printed = false;
std::set<std::string> seen;
for (int i = 0; i < length; i++) {
if (seen.find(tiles[i].name) != seen.end())
continue;
seen.insert(tiles[i].name);
// Load the texture and see if there's any transparent pixels
video::ITexture *texture = tsrc->getTexture(tiles[i].name);
video::IImage *image = driver->createImage(texture,
core::position2d<s32>(0, 0), texture->getOriginalSize());
if (!image)
continue;
core::dimension2d<u32> dim = image->getDimension();
bool ok = true;
for (u16 x = 0; x < dim.Width; x++) {
for (u16 y = 0; y < dim.Height; y++) {
if (image->getPixel(x, y).getAlpha() < 255) {
ok = false;
goto break_loop;
}
}
}
break_loop:
image->drop();
if (!ok) {
warningstream << "Texture \"" << tiles[i].name << "\" of "
<< name << " has transparent pixels, assuming "
"use_texture_alpha = true." << std::endl;
if (!long_warning_printed) {
warningstream << " This warning can be a false-positive if "
"unused pixels in the texture are transparent. However if "
"it is meant to be transparent, you *MUST* update the "
"nodedef and set use_texture_alpha = true! This compatibility "
"code will be removed in a few releases." << std::endl;
long_warning_printed = true;
}
return true;
}
}
return false;
}
bool isWorldAligned(AlignStyle style, WorldAlignMode mode, NodeDrawType drawtype)
{
if (style == ALIGN_STYLE_WORLD)
@ -814,13 +859,19 @@ void ContentFeatures::updateTextures(ITextureSource *tsrc, IShaderSource *shdsrc
break;
case NDT_MESH:
case NDT_NODEBOX:
if (alpha == 255 && textureAlphaCheck(tsrc, tdef, 6))
alpha = 0;
solidness = 0;
if (waving == 1)
material_type = TILE_MATERIAL_WAVING_PLANTS;
else if (waving == 2)
material_type = TILE_MATERIAL_WAVING_LEAVES;
else if (waving == 3)
material_type = TILE_MATERIAL_WAVING_LIQUID_BASIC;
material_type = (alpha == 255) ? TILE_MATERIAL_WAVING_LIQUID_OPAQUE :
TILE_MATERIAL_WAVING_LIQUID_BASIC;
else if (alpha == 255)
material_type = TILE_MATERIAL_OPAQUE;
break;
case NDT_TORCHLIKE:
case NDT_SIGNLIKE: