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

Two additional arguments to shaderBlock:send(): an offset and a size. If present, only part of the shaderBlock will be sent.

This commit is contained in:
mcc 2021-02-15 13:29:56 -05:00 committed by Bjorn
parent 72284c2c5b
commit a3c76a95ab
1 changed files with 8 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
src/api/l_graphics_shaderBlock.c
View File

@ -42,10 +42,15 @@ static int l_lovrShaderBlockSend(lua_State* L) {
Blob* blob = luax_checktype(L, 2, Blob);
Buffer* buffer = lovrShaderBlockGetBuffer(block);
void* data = lovrBufferMap(buffer, 0, false);
int offset = luaL_optinteger(L, 3, 0);
lovrAssert(offset >= 0, "Negative offset");
lovrAssert(offset < blob->size, "Offset %d larger than blob (size %d)", offset, (int) blob->size);
int size = luaL_optnumber(L, 4, blob->size - offset);
lovrAssert(size <= blob->size - offset, "Size %d offset %d larger than blob (size %d)", offset, size, (int) blob->size);
size_t bufferSize = lovrBufferGetSize(buffer);
size_t copySize = MIN(bufferSize, blob->size);
memcpy(data, blob->data, copySize);
lovrBufferFlush(buffer, 0, copySize);
size_t copySize = MIN(bufferSize, size);
memcpy(data, ((uint8_t*) blob->data) + offset, copySize);
lovrBufferFlush(buffer, offset, copySize);
lua_pushinteger(L, copySize);
return 1;
}