adlansadou / instanced-renderer

Vulkan based 2D renderer demonstrating use of GPU instancing with an array of textures

Quick Warning Notice

This project is still under heavy development and in early stage. I'm still working on & exploring techniques, thus the API is not yet fleshed out. This is not much of a library for now and I don't expect anybody to use it at this time. Do so at your own risk and peril.

Please note that the examples might not run on your particular hardware for now because I make a few assumptions. This will be fixed of course going forward.

Features

• Instanced rendering
• Array of textures: indexed inside fragment shader per primitive instance
• bare bones compute dispatch

Result: as of now, a 2D instanced renderer able to display more than 2 million sprites at high framerates (60+ fps) on entry level hardware, like a GTX 1050 ti. And twice as much on a GTX 1070.

Dependencies

• SDL2: cross platform Windowing & swapchain abstraction
• glm: GLSL aligment compatible math types & functions
• imgui: for future debug GUI
• stb_image: single header lib for image (texture) loading
• vma : Vulkan Memory Allocator by GPUOpen

instanced-renderer's Issues

Create Swapchain & Images & ImageViews

Implementation needs to be improved to take into account window resizing.

achieved by recreating the swapchain with post resize currentExtent ?

Querry PhysicalDevice

The current implementation only reflects my own hardware setup.

This might not work on another setup. Some people might have more than one GPU, with different capabilities.

Thus, a proper implementation needs to list all GPUs and select the right one, or a combination of available and compatible GPUs.

Querry Queue Families

Implementation needs to be improved.

Find queue families/family supporting graphics & present

If the graphics queue family does not support surface presentation, we need to to look for an additional queue that does.