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Added instancing support to Meshes via Mesh:setInstanceCount. Added a new built-in variable to vertex shaders: int love_InstanceID.

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love.graphics.draw(mesh) will draw the mesh instancecount times, using hardware instancing when available. The only way to draw individual instances differently from each other is to use the love_InstanceID variable in a vertex shader.

Added love.graphics.isSupported(“instancing”). Hardware instancing is supported if true, otherwise a (slower) pseudo-instancing fallback is used internally when drawing instanced meshes.
This commit is contained in:
Alex Szpakowski
2014-01-21 06:01:50 -04:00
parent 81d9810ed8
commit 73f1ce0d40
13 changed files with 217 additions and 13 deletions
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src/modules/graphics/opengl/wrap_Mesh.cpp
+16
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@@ -236,6 +236,20 @@ int w_Mesh_getVertexMap(lua_State *L)
return 1;
}
int w_Mesh_setInstanceCount(lua_State *L)
{
Mesh *t = luax_checkmesh(L, 1);
t->setInstanceCount(luaL_checkint(L, 2));
return 0;
}
int w_Mesh_getInstanceCount(lua_State *L)
{
Mesh *t = luax_checkmesh(L, 1);
lua_pushinteger(L, t->getInstanceCount());
return 1;
}
int w_Mesh_setTexture(lua_State *L)
{
Mesh *t = luax_checkmesh(L, 1);
@@ -338,6 +352,8 @@ static const luaL_Reg functions[] =
{ "getVertexCount", w_Mesh_getVertexCount },
{ "setVertexMap", w_Mesh_setVertexMap },
{ "getVertexMap", w_Mesh_getVertexMap },
{ "setInstanceCount", w_Mesh_setInstanceCount },
{ "getInstanceCount", w_Mesh_getInstanceCount },
{ "setTexture", w_Mesh_setTexture },
{ "getTexture", w_Mesh_getTexture },
{ "setDrawMode", w_Mesh_setDrawMode },