DEVLOG 23 - Instanced Draw & Some Fixes

 
Intro
Devlog time!!
In the last devlog, I had some issues with instanced drawing and reading a position buffer.
 
What Was The Problem?
I worked hard, but I managed to figure out where the problem was and fix it. (The problem was due to a for loop responsible for creating the address buffers. I was saving pointers outside the for loop with structs allocated inside the for loop; therefore, the pointers were pointing to corrupted memory or nothing.)
 
Render Graph Fixes
I fixed several things in the Render Graph that could cause future problems. I added small guards within the Render Graph so that if the user does something wrong, the application doesn’t crash unexpectedly. For example, previously, if the user set a texture to display that they’d never used (never involved in a transfer operation, never used as a graphic attachment), the program would crash. With these simple guards, everything is solved.
 
Easier Resource Usage Declaration
I’ve also added the ability to easily declare textures and buffers usage in the Graphics Pass class with dedicated methods like UseBufferReadOnlyVertex(...), UseTextureVertex(...), and others.
 
The image shows a grid of 20x20 quad meshes drawn with a single draw call instead of 400 using instanced draw.