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When multiple canvases are active at once (MRT), individual canvases can now be selectively cleared with love.graphics.clear(c1, c2, ...) by passing empty tables for the canvases that shouldn't be cleared, and color tables for the canvases that should.

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This commit is contained in:
Alex Szpakowski
2015-12-29 00:10:40 -04:00
parent b56a0cfc3d
commit 09e6a9a434
3 changed files with 44 additions and 20 deletions
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src/modules/graphics/opengl/wrap_Graphics.cpp
+18 -14
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@@ -55,19 +55,26 @@ int w_reset(lua_State *)
int w_clear(lua_State *L)
{
std::vector<Colorf> colors(1);
Colorf color;
if (lua_isnoneornil(L, 1))
colors[0].set(0, 0, 0, 0);
color.set(0, 0, 0, 0);
else if (lua_istable(L, 1))
{
colors.resize((size_t) lua_gettop(L));
std::vector<Graphics::OptionalColorf> colors((size_t) lua_gettop(L));
for (int i = 0; i < lua_gettop(L); i++)
{
if (lua_isnoneornil(L, i + 1) || luax_objlen(L, i + 1) == 0)
{
colors[i].enabled = false;
continue;
}
for (int j = 1; j <= 4; j++)
lua_rawgeti(L, i + 1, j);
colors[i].enabled = true;
colors[i].r = (float) luaL_checknumber(L, -4);
colors[i].g = (float) luaL_checknumber(L, -3);
colors[i].b = (float) luaL_checknumber(L, -2);
@@ -75,22 +82,19 @@ int w_clear(lua_State *L)
lua_pop(L, 4);
}
luax_catchexcept(L, [&]() { instance()->clear(colors); });
return 0;
}
else
{
colors[0].r = (float) luaL_checknumber(L, 1);
colors[0].g = (float) luaL_checknumber(L, 2);
colors[0].b = (float) luaL_checknumber(L, 3);
colors[0].a = (float) luaL_optnumber(L, 4, 255);
color.r = (float) luaL_checknumber(L, 1);
color.g = (float) luaL_checknumber(L, 2);
color.b = (float) luaL_checknumber(L, 3);
color.a = (float) luaL_optnumber(L, 4, 255);
}
luax_catchexcept(L, [&]() {
if (colors.size() == 1)
instance()->clear(colors[0]);
else
instance()->clear(colors);
});
luax_catchexcept(L, [&]() { instance()->clear(color); });
return 0;
}