Your Materials have color mode set to DIFFUSE. In OpenGL parlance, this enables
GL_COLOR_MATERIAL and causes the diffuse lighting component to come from the
primary color instead of the material diffuse color.
Remove the color mode setting (or leave it set to default OFF) and you will see
the Material diffuse color used when lighting is enabled.
-Paul
On 10/11/2011 9:34 AM, Dan West wrote:
Hi Paul,
Thanks for the replies.
I wasn't using Materials initially, but I tried adding them to see if they
would make a difference. The two geometries are still showing up as the same
color, but it didn't seem to be because of the Materials being the same.
Here's another .osg file with some better color coding:
Code:
Camera {
UniqueID Camera_0
nodeMask 0xffffffff
cullingActive FALSE
StateSet {
rendering_hint DEFAULT_BIN
renderBinMode INHERIT
Viewport {
UniqueID Viewport_1
x 0
y 0
width 2046
height 2048
}
textureUnit 0 {
}
textureUnit 1 {
}
textureUnit 2 {
}
textureUnit 3 {
GL_TEXTURE_GEN_S OVERRIDE|OFF
GL_TEXTURE_GEN_T OVERRIDE|OFF
GL_TEXTURE_GEN_R OVERRIDE|OFF
GL_TEXTURE_GEN_Q OVERRIDE|OFF
TexGen {
mode OBJECT_LINEAR
plane_s 1 0 0 0
plane_t 0 1 0 0
plane_r 0 0 1 0
plane_q 0 0 0 1
}
}
}
referenceFrame ABSOLUTE
clearColor 0 0.4 0 1
clearMask 0x100
Use Viewport_1
transformOrder PRE_MULTIPLY
ProjectionMatrix {
0.000977517 0 0 0
0 0.000976563 0 0
0 0 -0.002002 0
-0 -0 -1.002 1
}
ViewMatrix {
1 0 -0 0
-0 1 -0 0
0 0 1 0
0 0 -500 1
}
renderOrder PRE_RENDER
renderTargetImplementation FRAME_BUFFER_OBJECT
renderTargetFallback PIXEL_BUFFER_RTT
drawBuffer 0
readBuffer 0
bufferComponent COLOR_BUFFER {
internalFormat 0
Texture2D {
UniqueID Texture2D_2
DataVariance DYNAMIC
wrap_s CLAMP
wrap_t CLAMP
wrap_r CLAMP
min_filter LINEAR
mag_filter LINEAR
maxAnisotropy 1
borderColor 0 0 0 0
borderWidth 0
useHardwareMipMapGeneration TRUE
unRefImageDataAfterApply FALSE
internalFormatMode USE_USER_DEFINED_FORMAT
internalFormat GL_RGBA
resizeNonPowerOfTwo TRUE
}
level 0
face 0
mipMapGeneration FALSE
}
num_children 2
MatrixTransform {
UniqueID MatrixTransform_3
nodeMask 0xffffffff
cullingActive TRUE
referenceFrame RELATIVE
Matrix {
20.46 0 0 0
0 20.48 0 0
0 0 1 0
0 0 0 1
}
num_children 1
Geode {
UniqueID Geode_4
DataVariance DYNAMIC
nodeMask 0xffffffff
cullingActive TRUE
num_drawables 1
Geometry {
UniqueID Geometry_5
DataVariance DYNAMIC
StateSet {
rendering_hint DEFAULT_BIN
renderBinMode INHERIT
Material {
ColorMode DIFFUSE
ambientColor 0.2 0.2 0.2 1
diffuseColor 1 1 0 1
specularColor 0 0 0 1
emissionColor 0 0 0 1
shininess 0
}
}
useDisplayList TRUE
useVertexBufferObjects FALSE
PrimitiveSets 1
{
DrawArrays QUADS 0 4
}
VertexArray UniqueID Vec3Array_6 Vec3Array 4
{
0.5 0.5 0
-0.5 0.5 0
-0.5 -0.5 0
0.5 -0.5 0
}
NormalBinding OVERALL
NormalArray UniqueID Vec3Array_7 Vec3Array 1
{
0 0 1
}
ColorBinding OVERALL
ColorArray UniqueID Vec4Array_8 Vec4Array 1
{
0 1 0 1
}
}
}
}
MatrixTransform {
nodeMask 0xffffffff
cullingActive TRUE
referenceFrame RELATIVE
Matrix {
1 0 0 0
0 1 0 0
0 0 1 0
0 0 0 1
}
num_children 1
Geode {
UniqueID Geode_9
DataVariance DYNAMIC
nodeMask 0xffffffff
cullingActive TRUE
num_drawables 1
Geometry {
UniqueID Geometry_10
DataVariance DYNAMIC
StateSet {
rendering_hint DEFAULT_BIN
renderBinMode INHERIT
Material {
ColorMode DIFFUSE
ambientColor 0.2 0.2 0.2 1
diffuseColor 1 0 1 1
specularColor 0 0 0 1
emissionColor 0 0 0 1
shininess 0
}
}
useDisplayList TRUE
useVertexBufferObjects FALSE
PrimitiveSets 1
{
DrawArrays TRIANGLE_FAN 0 18
}
VertexArray UniqueID Vec3Array_11 Vec3Array 18
{
0 0 0
1 0 0
0.92388 0.382683 0
0.707107 0.707107 0
0.382683 0.92388 0
6.12323e-017 1 0
-0.382683 0.92388 0
-0.707107 0.707107 0
-0.92388 0.382683 0
-1 1.22465e-016 0
-0.92388 -0.382683 0
-0.707107 -0.707107 0
-0.382683 -0.92388 0
-1.83697e-016 -1 0
0.382683 -0.92388 0
0.707107 -0.707107 0
0.92388 -0.382683 0
1 0 0
}
NormalBinding OVERALL
NormalArray UniqueID Vec3Array_12 Vec3Array 1
{
0 0 1
}
ColorBinding OVERALL
ColorArray UniqueID Vec4Array_13 Vec4Array 1
{
1 0 0 1
}
}
}
}
}
In this version, I've made sure both geometries have Materials as well as
color buffers. In this case, I would expect the material to override the color
buffer (since lighting is enabled). However, the square (first attached child)
shows up green (from its color array), instead of yellow (from the material).
The circle (second attached child) shows up green as well (from the square's
color array), instead of red (from its color array) or magenta (from its
material).
Am I setting the materials wrong or something? I would expect them to be
fully enabled since the ColorMode is set to diffuse and the Material is showing
up as expected in the OSG file.
~ Dan
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=43317#43317
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--
-Paul Martz Skew Matrix Software
http://www.skew-matrix.com/
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