Questions tagged [compute-shader]
The compute-shader tag has no usage guidance.
-1
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0answers
15 views
Post-processing shader using 3D pixel coordinates to dictate colour
I am trying to make a post-processor shader within Unity which I cannot quite crack.
Essentially I want to make a post processing shader that finds the 3D world coordinate of its associated pixels, ...
0
votes
1answer
60 views
DirectX 11 Compute Shader error DXGI_ERROR_DEVICE_HUNG
I am trying to use a compute shader for ray picking technology. My shader accepts:
vertex buffer of all models
index buffer of all models
a buffer of transformation matrices of all models
Offset ...
0
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0answers
59 views
How to get Pixel Coordinates of certain colors in a Texture?
I have a relatively big Texture, and I try to find a certain color pixels pattern:
eg. White, Black, White, Green .
They are lying next to each other,
If I use Texture2d.Getpixels() on every pixel ...
2
votes
1answer
76 views
Solving a recursive problem in the geometry (or any other) shader
I would like to calculate an effect of an external force on a binary tree (wind on a tree).
It's a recursive function - take a (parent) node and calculate the angle to rotate all of the nodes "...
0
votes
1answer
438 views
Using a Compute Shader in Unity to convert a texture to a float array
I have a fairly simple requirement for a compute shader (DirectCompute through Unity). I have a 128x128 texture and I'd like to turn the red channel of that texture into a 1d array of floats. I need ...
0
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0answers
129 views
How to draw a line through compute shader
I'm just starting to learn GPGPU and hit a dead end in solving such a simple task.
It's a trifling matter, I have a texture that is dynamically generated on the C# - Unity side. Is also the array of ...
0
votes
1answer
354 views
Vulkan Storage Buffers, loss of data
I have been passing glm::vec3's in an array to a storage buffer to be processed by a compute shader, but once it has been modified I am getting some malformed data back.
Shader
...
2
votes
2answers
361 views
Pseudo random number generation in compute shader
Using a C# script in Unity3D to control a HLSL compute shader, I'm trying to generate pseudo random numbers on the gpu. Following along with
GPU Gems 3 Hybrid Tausworthe method
and another thread ...
0
votes
1answer
46 views
Get VertexSize of Instance in VertexShader
I'm using Unitys DrawProceduralIndirect function to directly render the content of a ComputeShader.
I setup the argumentBuffer for this function as follows:
<...
1
vote
0answers
284 views
Passing an UAV to a Pixel Shader in DirectX11
I have a compute shader which task is to take an input image and then blur it using a Gaussian filter approach. The input and output for the compute shader looks like this:
...
0
votes
1answer
108 views
Why does my triangle ray intersection test always return -1.0f?
I'm trying to get the mouse click position on a terrain geometry, but multiple times in each frame; doing it on the CPU was way too slow, so I'm trying to do it with a compute shader. I can't seem to ...
1
vote
1answer
291 views
Batch/Combine multiple Graphics.DrawProcedural-Calls in Unity
I have multiple calls to Graphics.DrawProcedural in my Unity-project.
E.g. I'm drawing 1000 procedural geometries that share the same material and get their ...
0
votes
1answer
132 views
In theory, would an erosion algorithm compute faster on a GPU than CPU?
I'm planning to port an erosion algorithm from CPU to GPU, in theory, will it be faster or would it be better to multi-thread it on the CPU? The algorithm has quite a lot of if statements and loops ...
0
votes
0answers
60 views
Compute shader, calculate index correctly
How to correctly calculate index of thread in say 10x10 thread 10x10 groups shader?
I have tried id.x + id.y*10 + groupID.x * 100 + groupID.y * 1000, but it doesn'...
3
votes
1answer
236 views
How to sort tiled decal list?
I have a tiled forward render pipeline (also called forward+). It assigns a list of lights for every 16*16 block of pixels (tiles) on the screen. Lights are accumulated additively so their order doesn'...
1
vote
1answer
206 views
DirectX shader - how to spread raytracer computation over multiple frames?
I'm playing around making a shadertoy style SDF raytracer in HLSL and to make it run faster on high resolutions (1080p and up) I'd like to spread the computation over multiple frames.
Right now I ...
3
votes
0answers
246 views
RWTexture3D in Compute Shader on Intel HD 4000
I'm having some weird issues running a Compute Shader with DirectX 11 on an Intel HD 4000 GPU.
The goal is to write different shapes into a DXGI_FORMAT_R32_FLOAT 3D Texture with a size of ...
16
votes
1answer
270 views
Flowing GPU compute water
I have a civil engineering background and perform hydraulic and hydrologic analysis' regularly. They sell degrees for that sort of thing, but it's really not rocket science. I recently got it in my ...
