lpnf
/
lovr
mirror of https://github.com/bjornbytes/lovr.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Mesh:setVertices(Blob);

This commit is contained in:
bjorn 2020-01-14 00:22:35 -08:00
parent 48b887f7ee
commit 3b8d485fe9
1 changed files with 19 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
src/api/l_graphics_mesh.c
View File

@ -271,19 +271,30 @@ static int l_lovrMeshSetVertexAttribute(lua_State* L) {
static int l_lovrMeshSetVertices(lua_State* L) {
Mesh* mesh = luax_checktype(L, 1, Mesh);
uint32_t capacity = lovrMeshGetVertexCount(mesh);
luaL_checktype(L, 2, LUA_TTABLE);
uint32_t sourceSize = luax_len(L, 2);
uint32_t start = luaL_optinteger(L, 3, 1) - 1;
uint32_t count = luaL_optinteger(L, 4, sourceSize);
lovrAssert(start + count <= capacity, "Overflow in Mesh:setVertices: Mesh can only hold %d vertices", capacity);
lovrAssert(count <= sourceSize, "Cannot set %d vertices on Mesh: source only has %d vertices", count, sourceSize);
if (!mesh->vertexBuffer || mesh->attributeCount == 0 || mesh->attributes[0].buffer != mesh->vertexBuffer) {
lovrThrow("Mesh does not have a vertex buffer");
lovrThrow("Mesh:setVertices does not work when the Mesh does not have a vertex buffer");
}
uint32_t capacity = lovrMeshGetVertexCount(mesh);
uint32_t start = luaL_optinteger(L, 3, 1) - 1;
uint32_t count = luaL_optinteger(L, 4, capacity - start);
size_t stride = mesh->attributes[0].stride;
Blob* blob = luax_totype(L, 2, Blob);
if (blob) {
count = MIN(count, blob->size / stride);
lovrAssert(start + count <= capacity, "Overflow in Mesh:setVertices: Mesh can only hold %d vertices", capacity);
void* data = lovrBufferMap(mesh->vertexBuffer, start * stride);
memcpy(data, blob->data, count * stride);
lovrBufferFlush(mesh->vertexBuffer, start * stride, count * stride);
return 0;
}
luaL_checktype(L, 2, LUA_TTABLE);
count = MIN(count, lua_objlen(L, 2));
lovrAssert(start + count <= capacity, "Overflow in Mesh:setVertices: Mesh can only hold %d vertices", capacity);
AttributeData data = { .raw = lovrBufferMap(mesh->vertexBuffer, start * stride) };
for (uint32_t i = 0; i < count; i++) {