VertexRGBA ruins alpha?.... 2005-03-02 - By Dan Yargici
Back
OK, let me start by saying that my colour clipping is set to RGB (the
default).
I have a mix2colours with a textured phong node piped into the Base
Colour, a Constant Black shader in layer1 and vertexRGBA driving the
blend (Mix mode).
Now, when I render it looks fine, but when I look at the alpha it is
just a grayscale version of the fill (it should look like a solid matte
as if the object was textured with the vertexRGBA). Now I've done this
100 billion times and never seen this..... the only thing that's
different here is that I'm using a vertexRGBA instead of a texture to
drive the blend.
Now, I know I can render a matte pass (and I will) or rendermap the
vertexRGBA, I just don't understand why I should have to.... any ideas?
Thanks,
DAN
run this, draw a region and look at the alpha to see what I mean (I used
a colour share here instead of the Constant Black)
NewScene
CreatePrim "Sphere", "MeshSurface"
ApplyShader , , , siUnspecified, siLetLocalMaterialsOverlap
CopyPaste , "Shaders\Texture\Mixers\Mix_2colors.Preset",
"TransientObjectContainer"
CopyPaste , "Shaders\Texture\Share\Color_share.Preset",
"TransientObjectContainer"
SIConnectShaderToCnxPoint "TransientObjectContainer.Color_share",
"Sources.Materials.DefaultLib.Material.Mix_2colors.color1", False
SetValue
"Sources.Materials.DefaultLib.Material.Mix_2colors.Color_share.input.red", 0
SetValue
"Sources.Materials.DefaultLib.Material.Mix_2colors.Color_share.input.green",
0
SetValue
"Sources.Materials.DefaultLib.Material.Mix_2colors.Color_share.input.blue",
0
SetValue
"Sources.Materials.DefaultLib.Material.Mix_2colors.Color_share.input.alpha",
0
SIConnectShaderToCnxPoint "Sources.Materials.DefaultLib.Material.Phong",
"TransientObjectContainer.Mix_2colors.base_color", False
SIConnectShaderToCnxPoint "TransientObjectContainer.Mix_2colors",
"Sources.Materials.DefaultLib.Material.surface", False
SelectObj "sphere", , True
CreateVertexColorSupport , "Vertex_Color"
PaintVertexColorTool
PaintVertexColorTool
PaintVertexColors "sphere", Array(13, 22, 23, 16, 17, 20, 26, 27, 29,
21, 24, 25, 28, 44, 45, 43, 46, 47, 48, 49, 59, 52, 53, 56, 57, 50, 51,
54, 55, 58, 73, 76, 74, 75, 78, 79, 77, 89, 82, 83, 86, 87, 80, 81, 84,
85, 88, 107, 110, 104, 105, 108, 109, 111, 119, 112, 113, 116, 117, 114,
115, 118, 138, 139, 142, 143, 149, 146, 147, 179, 209, 231, 234, 235,
238, 239), Array(-488447233, -774778369, -774778369, -488447233, -1, -1,
-825307393, -825307393, -218959105, -1, -1, -1, -1, -488447233,
-488447233, -269488129, -269488129, -1, -1, -1, -218959105, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -101058049, -101058049, -269488129, -269488129,
-1, -1, -1, -218959105, -1, -1, -1, -1, -1, -1, -1, -1, -1, -909522433,
-909522433, -101058049, -101058049, -1, -1, -522133249, -218959105, -1,
-1, -1, -1, -522133249, -185273089, -185273089, -909522433, -909522433,
-522133249, -522133249, -218959105, -185273089, -185273089, -218959105,
-218959105, -774778369, -774778369, -825307393, -825307393, -218959105), 1
PaintVertexColors "sphere", Array(6, 7, 2, 1, 3, 9, 12, 0, 4, 5, 8, 31,
30, 32, 40, 41, 33, 36, 37, 34, 35, 38, 39, 42, 43, 46, 62, 61, 63, 60,
66, 67, 70, 71, 74, 75, 64, 65, 68, 69, 72, 95, 90, 94, 92, 91, 93, 98,
96, 97, 100, 101, 120, 124, 126, 127, 121, 123, 122, 151, 153, 152, 182,
215, 218, 212, 210, 214), Array(-1869573889, -1869573889, 522133503,
943208703, 943208703, 303174399, 303174399, 269488383, 269488383,
269488383, 269488383, 269488383, 269488383, 522133503, 303174399,
303174399, 269488383, 269488383, 269488383, 269488383, 269488383,
269488383, 269488383, 269488383, -1296911617, -1296911617, 522133503,
269488383, 269488383, 269488383, 269488383, 269488383, 269488383,
269488383, -1296911617, -1296911617, 269488383, 269488383, 269488383,
353703423, 353703423, -1734829825, 842150655, 842150655, 522133503,
269488383, 269488383, -1734829825, 269488383, 269488383, 353703423,
353703423, -1077952513, -1077952513, -1734829825, -1734829825,
842150655, 842150655, 522133503, -1077952513, -1077952513, 522133503,
522133503, -1869573889, -1869573889, 522133503, 943208703, 943208703), 1
CopyPaste , "Shaders\Texture\Vertex_rgba.Preset", "TransientObjectContainer"
SIConnectShaderToCnxPoint "TransientObjectContainer.Vertex_rgba",
"Sources.Materials.DefaultLib.Material.Mix_2colors.weight1", False
ActivateObjectSelTool
ActivateObjectSelTool
SelectObj "sphere", , True
CopyPaste , "Shaders\Texture\Image.Preset", "TransientObjectContainer"
SIConnectShaderToCnxPoint "TransientObjectContainer.Image",
"Sources.Materials.DefaultLib.Material.Phong.ambient", False
SIConnectShaderToCnxPoint
"Sources.Materials.DefaultLib.Material.Phong.Image",
"Sources.Materials.DefaultLib.Material.Phong.diffuse", False
CreateProjection "sphere", siTxtSpherical, siTxtDefaultSpherical,
"Texture_Support", "Texture_Projection"
SetInstanceDataValue ,
"Sources.Materials.DefaultLib.Material.Phong.Image.tspace_id",
"Texture_Projection"
---
Unsubscribe? Mail Majordomo@(protected) with the following text in body:
unsubscribe xsi
|
|
