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Mesh:setVertexMap accepts a Blob for fast updates;

This commit is contained in:
bjorn 2018-03-22 11:22:06 -07:00
parent 471540433c
commit f9ce6d3425
1 changed files with 31 additions and 22 deletions
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53
src/api/types/mesh.c
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@ -203,30 +203,39 @@ int l_lovrMeshSetVertexMap(lua_State* L) {
return 0;
}
luaL_checktype(L, 2, LUA_TTABLE);
uint32_t count = lua_objlen(L, 2);
uint32_t vertexCount = lovrMeshGetVertexCount(mesh);
size_t size = vertexCount > USHRT_MAX ? sizeof(uint32_t) : sizeof(uint16_t);
IndexPointer indices = lovrMeshWriteIndices(mesh, count, size);
if (lua_type(L, 2) == LUA_TUSERDATA) {
Blob* blob = luax_checktypeof(L, 2, Blob);
size_t size = luaL_optinteger(L, 3, 4);
lovrAssert(size == 2 || size == 4, "Size of Mesh indices should be 2 bytes or 4 bytes");
uint32_t count = blob->size / size;
IndexPointer indices = lovrMeshWriteIndices(mesh, count, size);
memcpy(indices.raw, blob->data, blob->size);
} else {
luaL_checktype(L, 2, LUA_TTABLE);
uint32_t count = lua_objlen(L, 2);
uint32_t vertexCount = lovrMeshGetVertexCount(mesh);
size_t size = vertexCount > USHRT_MAX ? sizeof(uint32_t) : sizeof(uint16_t);
IndexPointer indices = lovrMeshWriteIndices(mesh, count, size);
for (uint32_t i = 0; i < count; i++) {
lua_rawgeti(L, 2, i + 1);
if (!lua_isnumber(L, -1)) {
return luaL_error(L, "Mesh vertex map index #%d must be numeric", i);
for (uint32_t i = 0; i < count; i++) {
lua_rawgeti(L, 2, i + 1);
if (!lua_isnumber(L, -1)) {
return luaL_error(L, "Mesh vertex map index #%d must be numeric", i);
}
uint32_t index = lua_tointeger(L, -1);
if (index > vertexCount || index < 1) {
return luaL_error(L, "Invalid vertex map value: %d", index);
}
if (size == sizeof(uint16_t)) {
indices.shorts[i] = index - 1;
} else {
indices.ints[i] = index - 1;
}
lua_pop(L, 1);
}
uint32_t index = lua_tointeger(L, -1);
if (index > vertexCount || index < 1) {
return luaL_error(L, "Invalid vertex map value: %d", index);
}
if (size == sizeof(uint16_t)) {
indices.shorts[i] = index - 1;
} else {
indices.ints[i] = index - 1;
}
lua_pop(L, 1);
}
return 0;