Comments on blog.leocov.com: lcUberShader_1.4.cgfx – maya realtime shader

@Jester - I'll post an update in a few hours, ...

2011-02-23T13:23:21.815-05:00

@Jester - I'll post an update in a few hours, I have a version in the works using 3 point lights along with 3 directional lights.

Hello! I tried to incoroprate this beauty into the...

2011-02-23T11:05:03.088-05:00

Hello! I tried to incoroprate this beauty into the Softimage pipeline and it works like a charm. All I need to know, how to use pointlights, instead of directionals and spots. I have connected the light direction parameters to light0, light1, light2 in the scene, if they exist, but our artists would like to rather use pointlight, it's easier tothem move pont lights around the scene than rotating directional lights.

Thanks!

Leo, a workaround for the technique selection bug ...

2010-11-05T14:16:19.020-04:00

Leo, a workaround for the technique selection bug is to disable the layout update after the technique selection, here's a patch that achieves that:

--- maya/scripts/2011/AEcgfxShaderTemplate.mel Thu Nov 4 19:10:43 2010 (r3497)
+++ maya/scripts/2011/AEcgfxShaderTemplate.mel Thu Nov 4 19:52:51 2010 (r3498)
@@ -727,8 +727,8 @@
// When "technique" attribute is changed, select corresponding button
// and rebuild our varying parameter list
$sCmd = "AEcgfxShader_techniqueUpdate " + $gAEcgfxShader_iLayout;
- $sCmd += "; evalDeferred \"AEcgfxShader_paramLayoutRebuild " + $gAEcgfxShader_iLayout + " 1; " +
- "AEcgfxShader_vertexAttributeUpdate " + $gAEcgfxShader_iLayout + " 1 0\"";
+ //$sCmd += "; evalDeferred \"AEcgfxShader_paramLayoutRebuild " + $gAEcgfxShader_iLayout + " 1; " +
+ // "AEcgfxShader_vertexAttributeUpdate " + $gAEcgfxShader_iLayout + " 1 0\"";
scriptJob -parent clTechnique
-replacePrevious
-killWithScene

Technique selection is still broken when the shader is reloaded, so this is not really the root of the problem, just a workaround.

this should get you started: http://www.cgbootcamp...

2010-08-04T13:16:10.049-04:00

this should get you started:
http://www.cgbootcamp.com/tutorials/2010/1/4/maya-realtime-viewport-shaders.html

Hi Leo, I am not very familiar with shaders in ma...

2010-08-04T12:58:04.233-04:00

Hi Leo,
I am not very familiar with shaders in maya, If its possible can u explain how to use that in maya.

Means if i download ur shader, it is coming like a text file in another browser window ....i dont know how can we execute that shader in maya...how to add that into the hypershade ?

Sorry ....if this is a very basic thing i am asking...

I am really curious to use your shaders.

Thanking u in advance
Iniyan

I have (hopefully) fixed the type-cast error. The...

2010-07-28T10:13:20.490-04:00

I have (hopefully) fixed the type-cast error. These things are sometimes dependent on drivers and hardware as well as the version of Maya - I dont have 2008 to test with. The 'MaxAnisotropy' error you are getting is dependant on your machine and configuration, most likely your graphics card not supporting the anisotropic texture filtering. I wont remove those lines by default, as they work for most users - but you can comment out the lines indicated and that error will go away (lines 136,303).
Download link remains the same.

Nice shaders btw, but I seem to be running into a ...

2010-07-23T01:00:14.485-04:00

Nice shaders btw, but I seem to be running into a problem with this shader. I keep getting this error? Any ideas? BTW I'm running maya 2008.

// cgfxShaderNode::cgErrorCallBack //
// Error: CG ERROR : Invalid parameter handle. //
// Error: (136) : error C8001: Unknown state 'MaxAnisotropy'
(303) : error C8001: Unknown state 'MaxAnisotropy'
(1162) : warning C7011: implicit cast from "float4" to "float3"
(1164) : warning C7011: implicit cast from "float4" to "float3"
(1166) : warning C7011: implicit cast from "float4" to "float3"
(1167) : warning C7011: implicit cast from "float4" to "float3" //

I'm not sure what the problem is. I have just ...

2010-07-22T22:19:54.184-04:00

I'm not sure what the problem is. I have just tested this again from scratch using a cube and a ground plane. The only issue i ran into was the TexCoord2 (under the shaders 'Vertex Data' - which is what the shadowMap looks at) defaulted to the wrong uv set when I first created the shader.

I have created the shadowmap texure bake using the...

2010-07-22T20:53:56.850-04:00

I have created the shadowmap texure bake using the mip_matteshadow and when i plug this into the diffuse node on your shader it looks fine. However when putting it into the shadowMapSampler nothing shows up. Sometimes i get a solid black mesh after applying it. Other times i get a garbled images as if the uvs are broken. All uv sets are fine and named and referenced correctly. What am i doing wrong?

on a simple groundplane and cube mesh set up ive applied your shader left it all default and plugged in the baked shadow map and it isnt working.

The point of the baked shadow map is that the shad...

2010-07-22T10:09:11.009-04:00

The point of the baked shadow map is that the shader combines it correctly across all your shading components.

The shadow map should be white with dark areas of shadows. It is not a 'rendered' image, but a texture bake on your objects' uv set. I use the mip_matteshadow node along with mental ray batch bake to create the shadow map. When dealing with multiple objects, I create a secondary uv set that lays out all the objects on a single sheet.

Ive been able to get a shadow map rendering correc...

2010-07-22T04:13:50.384-04:00

Ive been able to get a shadow map rendering correctly however when I put this in the shadowMapSampler it does nothing. Did you overlay that shadow into your diffuse in the above example?

Are you able to give a quick tutorial on the setti...

2010-07-22T03:26:21.739-04:00

Are you able to give a quick tutorial on the settings needed to bake strong directional shadows like in your example? I can only seem to get an AO like result.

the shadow map texture is a baked map, not an inte...

2010-07-21T10:03:13.226-04:00

the shadow map texture is a baked map, not an interactive feature. think along the lines of an ambient occlusion map. you can bake the shadows for your lights in a certain configuration and tumble around your scene, but you cannot change the position of the lights without baking the shadow map again.

Hi, may I know what's the use of the shadow Ma...

2010-07-21T04:25:34.109-04:00

Hi, may I know what's the use of the shadow Map texture, and how do you go about using it? I initially tried a bake from a directional light pointing straight down Y, but it doesn;t seems to react to the lights when I assign this map as a shadow map texture.

Thanks!

Thank you, for the shaders and your tutorials =]

2010-07-18T14:27:54.114-04:00

Thank you, for the shaders and your tutorials =]

Yes

2010-07-18T11:59:03.288-04:00

Yes

Hi, can this shader be used for getting a realtime...

2010-07-18T11:36:13.995-04:00

Hi, can this shader be used for getting a realtime game shader in maya?