2017 LLVM Developers’ Meeting: “Apple LLVM GPU Compiler: Embedded Dragons
- explanation of GPUs
- overview of GPU execution model
- latency hiding
- register usage
- many compiler internals
- optimizations and trade-offs that need to be considered
- uniformity hoisting
- compiler is able to extract constants …
OpenCl -> Vulkan: A Porting Guide [wayback-archive]
- why?
- better cross-platforms support
- more frequent driver updates
- more tools
- less driver overhead, up to 3x less
- shows differences between the APIs
- clspv a tool to compile openCL shaders to SPIRV
VK_KHR_dedicated_allocation unofficial manual [wayback-archive]
- extension allows the driver to inform application that separate allocations are preferred
- nvidia and intel need this extension to allow extra optimizations
- how to use the extension
Material layering [wayback-archive]
- overview of dif…
Forward+ decal rendering [wayback-archive]
- goals: avoid additional geometry, and don’t increase draw call count
- extend the light structure to also support decals
- cull the decals, sort them and apply them in the object shader just as lights
- still has a few open problems, for example mip selection …
Lightmap optimizations for iOS [wayback-archive]
- lightmpas too big for the memory budget on iOS
- using ETC2 as a replacement for DXT5 (same size, slightly less quality)
- switched to per-vertex lightmaps
- needed some art fixes
- but reduced disk size to 17 % and most expensive runtime location to 25 %…
real-time-rendering: an overview for artists [wayback-archive]
- overview of
- pbr
- render pipeline
- draw calls
- culling
- optimizations
Design Patterns for Low-Level Real-Time Rendering [wayback-archive]
- overview
- GPU/CPU memory systems
- command lists
- GCN resource descriptors
- ring buffer
- both GPU and…
Real-time Global Illumination by Precomputed Local Reconstruction from Sparse Radiance Probes [wayback-archive]
- realtime global illumination technique
- using local precomputed data so that no long-range interactions is required between probes and receivers
- receiver depends only on a constant numb…
About GPU Family 4 - Metal 2.0 [wayback-archive]
- tile-based deferred rendering (TBDR)
- imageblocks
- tile memory that can be acessed from the shader to create custom, tile local storage
- can be shared between compute, and rasterization
- tile shading
- new programmable stage, allow access to all data …
Which Compute ID for me? [wayback-archive]
- easy to read overview of how compute shader ids are calculated for 1D and 2D processing
- provides examples
- explanation of specular light calculations for area lights (Sphere, disk, rectangle, tube light)
- uses the Represent…
Automated Testing of Graphics Shader Compilers
- targeting GLSL
- uisng metamorphic testing (generating families of programs that should yield identical results)
- sucesfully used to find driver bugs and security issues
Efficient barycentric point sampling on meshes
- unbiased random sampling of points …
The vulkan device simulation layer
- useful to simulate less capable GPUs by returning lower device limits via queries
- pre-build device simulation layer
- how to set it up and use it
Vulkan SPIR-V shader size reduction using spirv-opt
- disusses which and how to order spirv-opt passes to reduce spir-v…
- support d3d12 feature level 12_1
- HBCC supports 49-bit addressing
- on-demand paging of local memory across the PCIe bus
- all of the graphics blocks have been made clients of the L2 cache (no seperate color block caches)
- next-generation geometry (NGG) path
- Primitive shade…
Circular Separable Convolution Depth of Field - acm.org
A basic Gaussian convolution can achieve linear time complexity by performing a horizontal and vertical pass. This is not possible when the target shape of the convolution is a circle. When performing a blur in the frequency domain it is pos…
Rethinking Texture Mapping course notes
this course we will discuss various radically different ways to rethink texture mapping that have been proposed over decades, each offering different advantages and trade-offs
Ubershaders: A Ridiculous Solution to an Impossible Problem - dolphin-emu.org
…
Naming Convention for Matrix Math - sebastiansylvan.com
naming convention for matrix to make transformations easy as slotting together Legos
This post mostly talks about row-major matrices. For more details about column-major matrices read this older post
