1
vote
1answer
329 views

Pixel Shader - apply a mask (XNA)

I'd like to apply a simple few masks to few images. The first mask I'd like to implement is mask like: XXXOOO I mean, that on the right everything is masked (to black), and on the left everything ...
4
votes
1answer
515 views

How do I achieve supersampling / anti-aliasing in pixel shaders?

I am trying to write a couple pixel shaders to apply to images similar to Photoshop effects. For example this effect: But I noticed there is aliasing in my resulting image (the above image is a ...
1
vote
2answers
515 views

How to set multiple times, in a single spritebatch, the same pixel shader parameter

I make a test with Effect class in XNA and I want to set multiple times the same parameters (MyParameter in below code). My code is : [...] //In Engine class Effect ShaderEffect = ...
1
vote
1answer
847 views

XNA HLSL 2D outline shader

I have gotten into quite a bit of trouble getting my rendering correct in my tile based 2D game. This kind of shader is surprisingly annoying to write, I've heard (we used it in one of our 3D ...
0
votes
2answers
809 views

HLSL shader optimization [closed]

The following HLSL shader (without preprocessing) results in 65 arithmetic operations (see below). Can the same effect achieved with <=64 operations? // Center of "light" float x; float y; // ...
1
vote
1answer
744 views

How to set TextureFilter to Point to make example Bloom filter work?

I have simple app that renders some particles and now I am trying to apply the bloom shader from the xna samplers ( http://create.msdn.com/en-US/education/catalog/sample/bloom ) to it, but I am ...