Shadow mapping is a process by which shadows are added in 3D graphics scenes.

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557 views

Shadows shimmer when camera moves

I've implemented shadow maps in my simple block engine as an exercise. I'm using one directional light and using the view volume to create the shadow matrices. I'm experiencing some problems with the ...
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649 views

how to modify shadow mapping in “3D Graphics with XNA Game Studio 4.0”? [closed]

So I've been following the tutorials from the book Sean James's "3D Graphics with XNA Game Studio 4.0", and have been doing fine until i reached the shadow mapping part. in this book it creates point ...
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901 views

Deferred rendering with VSM - Scaling light depth loses moments

I'm calculating my shadow term using a VSM method. This works correctly when using forward rendered lights but fails with deferred lights. // Shadow term (1 = no shadow) float shadow = 1; // [Light ...
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1answer
769 views

Omni-directional shadow mapping

What is a good/the best way to fill a cube map with depth values that are going to give me the least amount of trouble with floating point imprecision? To get up and running I'm just writing the raw ...
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1answer
1k views

JOGL hardware based shadow mapping - computing the texture matrix

I am implementing hardware shadow mapping as described here. I've rendered the scene successfully from the light POV, and loaded the depth buffer of the scene into a texture. This texture has ...
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3answers
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First time shadow mapping problems

I have implemented basic shadow mapping for the first time in OpenGL using shaders and I'm facing some problems. Below you can see an example of my rendered scene: The process of the shadow mapping ...
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1answer
123 views

Can't run Nvidia PracticalPSM sample in debug mode

I want to add PSM (Prespective shadow map) to my engine but I have problems with that. I think the problem is somewhere in my math code so I want debug Nvidia PracticalPSM sample and compare the math ...
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1answer
925 views

OpenGL lighting with dynamic geometry

I'm currently thinking hard about how to implement lighting in my game. The geometry is quite dynamic (fixed 3D grid with custom geometry in each cell) and needs some light to get more depth and in ...
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Deferred rendering + Shadow maps

I have a 1920x1200 shadowmap which just has the depth values of my scene drawn from the point of view of the light. I also have a 1920x1200 gbuffer that draws my scene to a fullscreen quad. How can ...
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148 views

Shadowmap granularity

I thought that we could re-use the same shadowmap for every light. But I've seen an industry article suggesting that you can't re-use shadowmaps between lights, and have to use separate surfaces. Do ...
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1answer
685 views

Need help with Shadows

I have started to develop an engine over on Codeplex but my shadows are not working correctly. I have been working for a week on it and can't figure out what is going wrong. I will be putting a 200 ...
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2answers
256 views

Fire range arc behind buildings

need some help with HLSL. Each charater in my game shows a fire range arc (which is a textured model) which show how far the guy can shoot, see It looks ok, but I hate the fact that it shows even ...
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2answers
997 views

Blurring point light variance shadow map

I've been working on implementing variance shadow mapping for my game. I was able to get a spot light working with variance shadow mapping with a gaussian blur applied to the shadow map to reduce the ...
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0answers
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Rotating camera changes directional light depth map, and changes PCSS penumbras

I am implementing PCSS and I am using a directional light. The directional light volume is clamped to the camera frustum (as is typical with directional lights). So when the camera rotates, the ...
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2answers
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Dual paraboloid point light shadows in deferred lighting setup

I've been playing around with this tutorial/sample code that demonstrates a simple implementation of light-pre-pass, which is a type of deferred lighting setup. I'm in the process of implementing ...
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1answer
2k views

Shadow map artifacts

I want to try adding shadows to a 3D XNA game. I've set up some testing environment with one light and one camera. However, I'm running into artifacts with my approach. I'm using the shader code from ...
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2answers
2k views

Point Light Soft Shadows

How to implement soft shadows for omni directional (point) light. We use typical shadow mapping technique. Depth is rendered to texture cube and addresing is pretty simple then. Just using vector from ...
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4answers
2k views

Shadow Mapping and Transparent Quads

Shadow mapping uses the depth buffer to calculate where shadows should be drawn. My problem is that I'd like some semi transparent textured quads to cast shadows - for example billboarded trees. As ...