法线贴图和镜面反射

Question

我正在使用ogre3d meshy来查看模型。我编写了一个可以使用法线贴图，反射，高光贴图的着色器。但是法线贴图不能正常工作，如图所示。

正如您所见，反射正在工作，而且世界地图正在发挥作用，但我不需要看到法线贴图和凹凸贴图。但

我试图禁用所有内容并输出法线贴图的结果及其纹理和采样正确，镜面反射和漫反射贴图相同。

这是GLSL VS

/ *     环境立方反射     法线贴图     TetxureMapping Scaling * /

#version 120
#define lowp
#define mediump
#define highp

attribute vec4 vertex;
attribute vec3 normal;
attribute vec4 uv0;
attribute vec4 uv1;
attribute vec4 tangent;
//attribute vec3 binormal;

uniform mat4 normalMatrix;
uniform mat4 modelViewProjectionMatrix;
uniform mat4 modelView;
uniform vec3 camera_world_position;
uniform mat4 textureMatrix0;

varying vec2 texCoord[2];
varying vec3 viewWorld;
varying mat3 world2Tangent;


void main()
{       
    gl_Position = modelViewProjectionMatrix * vertex;

    // transform the uv coordinates
    texCoord[0] = (textureMatrix0 * uv0).xy;
    texCoord[1] = uv1.xy;

    //world.
    vec3 vertexWorld = vec3(modelView * vertex);

    //transform world to tangent.
    //world2Tangent = mat3(normalMatrix) * mat3(tangent, binormal, normal);

    // no binormal in ogre?. must reconstruct. Ogre inverts?
    vec3 binormal = cross ( normal, tangent.xyz ) * tangent.www;
    world2Tangent = mat3(normalMatrix) * mat3(tangent.xyz, binormal, normal);

    //Camera Position
    //Use Light0 instead of camera position to match phong specular with environment reflection 
    viewWorld = normalize( - vertexWorld );

} 


#version 120
#define lowp
#define mediump
#define highp

uniform sampler2D diffuseColorMap;
uniform sampler2D ambientOcclusionMap;
uniform sampler2D normalMap;
uniform sampler2D specularMap;
uniform samplerCube envMap;

uniform float diffuseFactor;
uniform float reflectionFactor;
uniform float opacity;

varying vec2 texCoord[2];
varying mat3 world2Tangent;
varying vec3 viewWorld;

void main()
{
    //unpack current normal in tangent space
     vec3 normal = 2.0 * texture2D (normalMap, texCoord[0].st).rgb - 1.0;



    // environment reflection in world space
    vec3 normalWorld = normalize(world2Tangent * normal);
    vec3 refDir = viewWorld - 2.0 * dot(viewWorld,normalWorld) * normalWorld;

    vec4 diffuseColor = texture2D( diffuseColorMap, texCoord[0] );

    //mix ambient material with reflection
    vec4 final = diffuseFactor * ( diffuseColor * texture2D(ambientOcclusionMap, texCoord[0]) ) +
    reflectionFactor * ( textureCube(envMap,refDir) * texture2D(specularMap, texCoord[0]) );
    final.a = diffuseColor.a * opacity;
    gl_FragColor= final;
}