multisampled gl masks

1 files changed, 19 insertions, 0 deletions

diff --git a/memory.cpp b/memory.cpp
index 7c08f91..2a9b29b 100644
--- a/memory.cpp
+++ b/memory.cpp
@@ -25,6 +25,25 @@ AllocateMemory(memory *Memory, uint64 Size, memory_table_list TableName) {
     return Address;
 }
 
+// Returns the address and THEN advances
+static void*
+Memory_Advance(memory *Memory, uint64 Size, memory_table_list TableName) {
+    return AllocateMemory(Memory, Size, TableName);
+}
+
+// Rewinds and THEN returns the address
+static void*
+Memory_Rewind(memory *Memory, uint64 Size, memory_table_list TableName) {
+    void *Address;
+    memory_table *Table = &Memory->Slot[TableName];
+    if (Table->CurrentPosition - Size < 0) {
+        return NULL;
+    }
+    Table->CurrentPosition -= Size;
+    Address = (ptrsize *)((uint8 *)Table->Address + Table->CurrentPosition);
+    return Address;
+}
+
 // Returns 0-1 range wherever Pointer is in relation to StartingPointer to Size*Amount.
 static real32
 Memory_NormalizedPosition(void *StartingPointer, uint32 Amount, uint32 Size, void *Pointer)