Hi guys,
this may be a pretty dumb question but I read the tutorial (http://wiki.jmonkeyengine.org/doku.php/jme3:advanced:jme3_shaders) over and over again and I don’t get what I am doing wrong. When I try to use my custom material I get the folliwing exception:
0(11) : error C1008: undefined variable "StartColor"
0(11) : error C1008: undefined variable "EndColor"
0(11) : error C1008: undefined variable "StartColor"
0(11) : error C1008: undefined variable "EndColor"
Here is my material:
MaterialDef MatFieldview {
MaterialParameters {
Vector2 StartColor
Vector2 EndColor
Vector4 Color
}
Technique {
VertexShader GLSL120 : MatDefs/Shaders/matFieldview.vert
FragmentShader GLSL120 : MatDefs/Shaders/matFieldview.frag
WorldParameters {
WorldViewProjectionMatrix
}
RenderState{
Blend Alpha
}
}
}
and here my fragment shader:
uniform vec2 m_StartColor;
uniform vec2 m_EndColor;
uniform vec4 m_Color;
varying vec3 vertPos;
void main(){
if(vertPos.x > StartColor.x && vertPos.x < EndColor.x && vertPos.y > StartColor.y && vertPos.y < EndColor.y)
gl_FragColor = m_Color;
else if((mod(vertPos.x, 1) > 0.49 && mod(vertPos.x, 1) < 0.51) || (mod(vertPos.z, 1) > 0.49 && mod(vertPos.z, 1) < 0.51))
gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0);
else
gl_FragColor = vec4(0.0, 0.0, 0.0, 0.0);
}
As you see I added the parameters in my material and with “m_” in front I added them to the shader. The rest of the shader (displaying a grid) works, I just don’t know what I missed adding the parameters.
Here is the vertex shader too, if that is important even thought I don’t need the parameters there:
uniform mat4 g_WorldViewProjectionMatrix;
uniform mat4 g_WorldMatrix;
attribute vec3 inPosition;
attribute vec3 inTexCoord;
varying vec3 vertPos;
void main(){
vertPos = inPosition;
gl_Position = g_WorldViewProjectionMatrix * vec4(inPosition, 1.0);
}
Thank you and sorry for that stupid question…
Thank you 