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3
votes
1answer
101 views

Understanding and editing HDR light environments in Photoshop

I'm working with an in-development system that uses .hdr environments (equirectangular projection) to provide image-based lighting (IBL) to a 3D rendering. I'm trying to understand what range of ...
0
votes
1answer
34 views

Problem with .hdr/.pic format

So, everything was clear from the specification point of view, but when I moved to reading through some of the original implementations and reimplementations, I ran into this: f = ...
1
vote
0answers
221 views

How to set up bloom in Unity

Last time I used image effects in Unity it was back when 3.0 was released and for bloom you used the object's alpha to indicate whether it should glow or not. Now in 4.2 I couldn't grasp how to apply ...
1
vote
1answer
350 views

Uncharted 2 tone mapping and an eye adaptation

I found an example of uncharted 2 tone mapping on this site. Here is the code: float A = 0.15; float B = 0.50; float C = 0.10; float D = 0.20; float E = 0.02; float F = 0.30; float W = 11.2; float3 ...
15
votes
1answer
956 views

Does HDR rendering have any benefits if bloom won't be applied?

At the moment I use an image based light in my game for environment lighting. I sample a sky cubemap to get diffuse and specular lighting. At the moment I use a HDR rendering pipeline - the skybox ...
2
votes
1answer
2k views

How to create HDR and bloom in Unity3D?

Unity3D's reference describes the HDR Bloom as: Using HDR allows for much more control in post processing. LDR bloom has an unfortunate side effect of blurring many areas of a scene even if ...
0
votes
1answer
504 views

Reinhard tone mapping and color space [closed]

I found two ways of doing tone mapping (first, second): //Ld - this part of the code is the same for both versions float lum = dot(rgb, vec3(0.2126f, 0.7152f, 0.0722f)); float L = (scale / ...
2
votes
1answer
632 views

HDR / Tone Mapping - choosing parameters

I implement HDR in my graphics engine (deferred rendering) based on this document: link I save a luminance in a texture (RGBA16F) this way: const float delta = 1e-6; vec3 color = texture(texture0, ...
31
votes
2answers
1k views

How do you author HDR content?

How do you make it easy for your artists to author content for an HDR renderer? What kinds of tools should you provide, and what workflows need to change, in going from LDR to HDR? Note that I'm not ...
14
votes
4answers
3k views

how does HDR work?

I'm trying to understand what HDR is and how it works. I understand the basic concepts and have an slight idea of how it is implemented with D3D/hlsl. However it's still pretty foggy. Say I'm ...