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Add support for partial Image updates via Image:replacePixels(imagedata [, sliceindex, mipmap, x, y]) with a smaller-sized ImageData.

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Also updated the argument order of Canvas:newImageData to match: (sliceindex, mipmap, x, y, w, h).
This commit is contained in:
Alex Szpakowski
2018-01-10 22:52:28 -04:00
parent 22f72c7da6
commit 2459752c06
5 changed files with 38 additions and 28 deletions
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src/modules/graphics/wrap_Image.cpp
+14 -8
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@@ -52,19 +52,25 @@ int w_Image_replacePixels(lua_State *L)
int slice = 0;
int mipmap = 0;
Rect r = {0, 0, id->getWidth(), id->getHeight()};
int x = 0;
int y = 0;
bool reloadmipmaps = i->getMipmapsType() == Image::MIPMAPS_GENERATED;
if (i->getTextureType() != TEXTURE_2D)
{
slice = (int) luaL_checkinteger(L, 3) - 1;
if (!reloadmipmaps)
mipmap = (int) luaL_optinteger(L, 4, 1) - 1;
}
else if (!reloadmipmaps)
mipmap = (int) luaL_optinteger(L, 3, 1) - 1;
luax_catchexcept(L, [&](){ i->replacePixels(id, slice, mipmap, r, reloadmipmaps); });
mipmap = (int) luaL_optinteger(L, 4, 1) - 1;
if (!lua_isnoneornil(L, 5))
{
x = (int) luaL_checkinteger(L, 5);
y = (int) luaL_checkinteger(L, 6);
if (reloadmipmaps)
reloadmipmaps = luax_optboolean(L, 7, reloadmipmaps);
}
luax_catchexcept(L, [&](){ i->replacePixels(id, slice, mipmap, x, y, reloadmipmaps); });
return 0;
}