HLSL is a proprietary shading language developed by Microsoft for use with the Microsoft Direct3D API.
6
votes
2answers
293 views
Does it make sense to include an index for linelists?
Does it make sense to include an index by using DrawIndexedPrimitives, when using linelists performance wise? I could imagine it would be easy for the GPU to generate such indexes anyway.
3
votes
1answer
145 views
Instancing with empty data, or varying vertex counts?
I am new to game development, having only developed a few games before, in 2D space, but with 3D rendering.
I have implemented instancing before, but this is only my 2nd time doing it. I have a ...
4
votes
2answers
495 views
Rendering everything with a shader when only squares are needed?
I am building a game that is tile-based (filled with glowy vector squares). Right now, I am considering using instancing for drawing these, but I would like to know if there is a faster approach.
The ...
2
votes
1answer
456 views
Model in Blender GLSL to XNA HLSL
Is it possible to make model in Blender, with enabled GLSL, add multiple textures, etc, and then just load it in XNA, where's own HLSL? Will it work?
4
votes
4answers
922 views
From camera coordinates to world coordinates
I want to calculate world coordinates from camera coordinates. However, I seem to have problems with my understandings of how matrices in HLSL work.
From world to camera is clear:
cameraPosition = ...
1
vote
1answer
236 views
HLSL weird matrix behaviour
I have some problems using an int 3x3 matrix as the convolution filter to do edge detection. (I know int matrices are not very meaningful since there is only float on the gpu)
Here is the code:
...
7
votes
4answers
427 views
What types of effects or shaders would you teach in a rendering class? [closed]
I am looking for a list of topics that would be fun to learn and not too complicated to implement with a prototyping tool like FX Composer or Rendermonkey for an intermediate class of real-time ...
6
votes
2answers
608 views
Rendering collections of light sources
I have a small test environment where small point lights are scattered. Players should able to collect them.
The collectible lights are rendered using a simple billboard technique where two triangles ...
5
votes
2answers
719 views
Different number of lights => different shader
I have a shader that computes lighting for each light.
PointLight PointLights[10];
uniform const float NumPointLights;
for(int i = 0; i < NumPointLights; i++)
{
lightVec = ...
6
votes
4answers
1k views
HLSL: Using instance float input to select texture index, possible?
I'm writing a game for the xbox360 using XNA.
I would like to draw several models with a single DrawInstancedPrimitives call. Each model will use a different texture.
To do this, I would like to ...
6
votes
2answers
959 views
Electricity effect using XNA and Shaders
I'm looking for a shader or sample that does an electricity or lines-of-force effect between two points that can be used with XNA 3.1.
2
votes
3answers
1k views
2D shader to draw representation of rotating sphere
I want to display a 3D textured sphere, and then rotate it in one direction. The direction will never change, and the camera will never move. One way is to actually create a spherical mesh, map a ...
2
votes
2answers
599 views
Compatibility between DirectX 9 and DirectX 10 shaders
I am a beginner to game development and as I am used to programming in C# I decided to go for XNA. I've been playing around with it for a while and now I am learning the basics of HLSL shaders, I have ...
15
votes
3answers
2k views
How can I create a lighting effect like this?
This is the most beautiful 2d lighting I have ever seen, and I'd like to perform lighting like this too. How do I do it?
I don't care about the physics or how the particles are simulated - I only ...
3
votes
1answer
1k views
HLSL: Pack 4 values into 32 bit float
I can't find any useful information on packing 4 values into a 32 bit float in HLSL.
Ideally, what I want to be able to do in HLSL is:
float4 values = ... // Some values where each component is ...
4
votes
2answers
1k views
C# XNA - Sky Sphere Question
I have been banging my head against the wall trying to get a sky sphere to work appropriately in XNA 4.0. I have the sphere loading correctly, and even textured, but i would like something a little ...
13
votes
6answers
2k views
Modern Shader Book?
I'm interested in learning about Shaders: What are they, when/for what would I use them, and how to use them. (Specifically I'm interested in Water and Bloom effects, but I know close to 0 about ...
1
vote
1answer
449 views
Porting an HLSL 3.0 shader to 2.0?
I have a couple of .fx files from a Shader-Based 2D Shadows example. I want to utilize the same kind of technique with XNA 4.0's Reach profile, which if I understand correctly needs to have HLSL 2.0 ...
8
votes
3answers
849 views
Very slow direct3D texture sampling
So I'm writing a small game using Direct3D 9 and I'm using multitexturing for the terrain. All I'm doing is sampling 3 textures and a blend map and getting the overall color from the three textures ...
31
votes
6answers
9k views
12
votes
3answers
874 views
HLSL Translucent Plastic Shader
I'm trying to produce a shader to replicate a white plastic object with a colored light inside. Either by having a shader that will be translucent and if I put a light inside the object the light will ...
16
votes
11answers
3k views
What are some good resources for learning HLSL?
The last time I tried learning HLSL, I made a few shaders and mostly understood what I was doing, but I still felt like I was stumbling in the dark. Most of what I learned I got from various blog ...
