每天花30分钟看OGRE(14)试验模型边缘高亮

15.试验模型边缘高亮

为什么只能看到绿色的呢？

Vertex_program没起作用？

注释掉vs还不行。

找到原因了，原来是被绿色盖住了。

void edgeHighLight_vp(float4 position : POSITION,

float3 normal : NORMAL,

out float4 oPosition : POSITION,

uniform float4x4 worldViewProj)

{

//oPosition = float4(position.xyz + normal * 0.6f, 1);

oPosition = float4(position.x + 70.0f, position.yzw);

oPosition = mul(worldViewProj, oPosition);

}

改了后就能看到两个pass都绘制了。

并不是没有法线，noramls true

改成cull_hardware anticlockwise就正常了。这个就是原因了！

 放在Example.meterial里

vertex_program Examples/EdgeHighLightVS hlsl
{
    source EdgeHighLightVS.hlsl
    entry_point edgeHighLight_vp
    target vs_1_1
    
    default_params
    {
        param_named_auto worldViewProj worldviewproj_matrix
    }
}

fragment_program Examples/EdgeHighLightPS hlsl
{
    source EdgeHighLightPS.hlsl
    entry_point edgeHighLight_fp
    target ps_2_0
    
    default_params
    {
    }
}

material Examples/EnvMappedRustySteelEdgeHighLight
{
    technique
    {    
        pass
        {
            cull_hardware anticlockwise
            
            vertex_program_ref Examples/EdgeHighLightVS
            {
            }
            
            fragment_program_ref Examples/EdgeHighLightPS
            {
            }
        }
        
        pass
        {
            cull_hardware none
            //polygon_mode wireframe
            
            texture_unit
            {
                texture RustySteel.jpg
            }

            texture_unit
            {
                texture spheremap.png
                colour_op_ex add src_texture src_current
                colour_op_multipass_fallback one one
                env_map spherical
            }
        }
    }
}

 EdgeHighLightVS.hlsl

 

void edgeHighLight_vp(float4 position : POSITION,
                      float3 normal      : NORMAL,
                          
                      out float4 oPosition : POSITION,
                      uniform float4x4 worldViewProj)
{
    oPosition = float4(position.xyz + normal * 0.6f, 1);
    //oPosition = float4(position.x, position.yzw);
    oPosition = mul(worldViewProj, oPosition);
}

 EdgeHighLightPS.hlsl

 void edgeHighLight_fp(out float4 colour : COLOR)

{

colour = float4(0, 1, 0, 1);

}

    // Just override the mandatory create scene method
    void createScene(void)
    {
        // Set ambient light
        mSceneMgr->setAmbientLight(ColourValue(0.5, 0.5, 0.5));
        // Create a point light
        Light* l = mSceneMgr->createLight("MainLight");
        // Accept default settings: point light, white diffuse, just set position
        // NB I could attach the light to a SceneNode if I wanted it to move automatically with
        //  other objects, but I don't
        l->setPosition(20,80,50);
        Entity *ent = mSceneMgr->createEntity("head", "ogrehead.mesh");
        // Set material loaded from Example.material
        ent->setMaterialName("Examples/EnvMappedRustySteelEdgeHighLight"); 
        // Add entity to the root scene node
        mSceneMgr->getRootSceneNode()->createChildSceneNode()->attachObject(ent);      
    }

Reference：

 物件的边缘高亮(Entity edge highlight)