GPU (graphics processing unit), is a specialized processor designed to accelerate the process of building images.

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Proper updating of GeoClipMaps

I have been working on an implementation of gpu-based geo clip maps, but there is a section of the GPU Gems 2 article that I just can't seem to understand, specifically this paragraph, and more ...
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38 views

Skeletal Animation Mirrored

Okay so I've been working on GPU skinning skeletal animations. I need help assessing what is going on here. Looks like the animations are completely mirrored What are the possible issues? I've been ...
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382 views

How is Ping-Ponging done in Stage3D & AGAL (Flash Player 11)

Does anyone know how to create a Texture feedback effect in Stage3D / AGAL? I've just found the term "ping-ponging" in some GPU wikipage, hopefully I'm using it in the right place! I'll share with ...
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How much is atomicAdd slower than an atomic counter?

I am considering replacing an atomic counter in my shader code with a SSBO an atomicAdd operation. What I need to know is the difference in performance of these two. I know the atomic counter executes ...
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85 views

Framebuffer Heightmap Performance Problems

I am using a framebuffer to procedurally create heightmaps with perlin noise in GLSL shaders. There are two main problems that I am experiencing with this. I have a quadtree for the terrain and in the ...
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Android: Hardware Scaler

I was reading through this: using-hardware-scaler-for-performance and am a little confused by it. It says all you need to do to invoke the scaler is to set it like so: surfaceView = new ...
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OpenGL textureGather and DirectX gather

These functions sample multiple RGBA pixels but return only a single component. OpenGL: https://www.opengl.org/sdk/docs/man/html/textureGather.xhtml DirectX: ...
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What limits the number of vertices the GPU can process per clock cycle?

I am currently experimenting with OpenGL to make my own game. I wrote some test code to see what are the limits of my GPU. I own a Geforce 840m. This essentially consists of a draw command ...
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Rectification of an image by using texture projection

I need to rectify an image with texture projection on GPU (GLSL/shaders), do you have any resources/tutorials/insights to share? I have the 3D pose of the camera that created the image and the image ...