Hi,
sounds like there's maybe a bug in the assimp scene loader plugin. For
the dark lighting and harsh specular, I've been wondering if there's a
bug in the shaders somewhere as I have other custom shaders based on
similar lighting models that do not exhibit this behaviour. I'm off sick
today so I don't have the energy to dig into it today though.
Can you file a JIRA for the collada loading issue with a test case or
two please?
Many thanks,
Sean
On 08/07/2016 08:54, Ola Røer Thorsen wrote:
Hi,
I need to load some simple 3d scenes into an application using Qt3D,
QtQuick and Qt 5.7.
I've created the scenes in Blender, exported them as Collada files and
they mostly show up in my application unless SceneLoader causes a crash.
I'm using the basic ForwardRenderer frameGraph like so,
components:[
RenderSettings{
activeFrameGraph:ForwardRenderer{
camera:camera
clearColor:"lightskyblue"
}
},
InputSettings{}
]
There is one light source acting as the sun,
Entity{
id:sun
components:[
DirectionalLight{
color:Qt.rgba(1,1,1,1)
worldDirection:Qt.vector3d(0,-1,0)
}
]
}
However the end result is very dark, and it does not seem like any
material changes I do in Blender have much effect on the rendering in my
application. Texturing works OK, the diffuse color is used for
texturing. The ambient light color shows up as completely black, making
the scene much too dark in the shadow areas. Specular is very "hard"
which also makes the overal scene darker. It also seems like only one
light source is used when rendering, even if I define several to try to
lighten up the shadows.
If anyone have some hints on how to tune the materials used in a
workflow like this I'd be really happy to hear about it. In general I
want to create a scene in Blender, import it somehow to my application,
and render the scene in a way that doesn't have completely black shadow
areas. Is there some way to tune the materials used by SceneLoader?
For other entities in the scene I'm using the DiffuseMapMaterial which
gives me good results.
Cheers,
Ola
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