Using specular lights with textured objects

I'm trying to use a specular light with a textured object and I get a crazy black&white image. If I use the same object but without textures, specular light works as expected.

Somebody knows what could be wrong.

My code as follows:

       GRRLIB_SetLightSpot(1, (guVector){ 5.0f, 0.8f, 0 }, (guVector){  0.0f, 0.0f, cubeZ }, -4.0f, 5.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0xFFFFFFFF);

        GRRLIB_3dMode(0.1,1000,45,1,1);
        GRRLIB_ObjectView(0,0,cubeZ, a,a*2,a*3,2,2,2);
		
       GRRLIB_SetTexture(tex_girl,0);
    GX_Begin(GX_QUADS, GX_VTXFMT0, 24);
		// cara trasera
		// coordenada x de textura se aplica sobre la coordenada x del poligono
		// coordenada y de textura se aplica sobre la coordenada y del poligono
		GX_Position3f32(-0.5f,+0.5f,-0.5f);
		GX_Normal3f32(+0.0,+0.0,-1.0);
		GX_Color1u32(col);
		GX_TexCoord2f32(0.0f,0.0f);
		GX_Position3f32(-0.5f,-0.5f,-0.5f);
		GX_Normal3f32(+0.0,+0.0,-1.0);
		GX_Color1u32(col);
		GX_TexCoord2f32(1.0f,0.0f);
		GX_Position3f32(+0.5f,-0.5f,-0.5f);
		GX_Normal3f32(+0.0,+0.0,-1.0);
		GX_Color1u32(col);
		GX_TexCoord2f32(1.0f,1.0f);
		GX_Position3f32(+0.5f,+0.5f,-0.5f);
		GX_Normal3f32(+0.0,+0.0,-1.0);
		GX_Color1u32(col);
		GX_TexCoord2f32(0.0f,1.0f);

		// cara delantera
		// coordenada x de textura se aplica sobre la coordenada x del poligono
		// coordenada y de textura se aplica sobre la coordenada y del poligono
		GX_Position3f32(-0.5f,+0.5f,+0.5f);
		GX_Normal3f32(+0.0,+0.0,+1.0);
		GX_Color1u32(col);
		GX_TexCoord2f32(0.0f,0.0f);
		GX_Position3f32(+0.5f,+0.5f,+0.5f);
		GX_Normal3f32(+0.0,+0.0,+1.0);
		GX_Color1u32(col);
		GX_TexCoord2f32(1.0f,0.0f);
		GX_Position3f32(+0.5f,-0.5f,+0.5f);
		GX_Normal3f32(+0.0,+0.0,+1.0);
		GX_Color1u32(col);
		GX_TexCoord2f32(1.0f,1.0f);
		GX_Position3f32(-0.5f,-0.5f,+0.5f);
		GX_Normal3f32(+0.0,+0.0,+1.0);
		GX_Color1u32(col);
		GX_TexCoord2f32(0.0f,1.0f);

		// cara superior
		// coordenada x de textura se aplica sobre la coordenada x del poligono
		// coordenada y de textura se aplica sobre la coordenada z del poligono
		GX_Position3f32(-0.5f,+0.5f,+0.5f);
		GX_Normal3f32(+0.0,+1.0,+0.0);
		GX_Color1u32(col);
		GX_TexCoord2f32(0.0f,0.0f);
		GX_Position3f32(+0.5f,+0.5f,+0.5f);
		GX_Normal3f32(+0.0,+1.0,+0.0);
		GX_Color1u32(col);
		GX_TexCoord2f32(1.0f,0.0f);
		GX_Position3f32(+0.5f,+0.5f,-0.5f);
		GX_Normal3f32(+0.0,+1.0,+0.0);
		GX_Color1u32(col);
		GX_TexCoord2f32(1.0f,1.0f);
		GX_Position3f32(-0.5f,+0.5f,-0.5f);
		GX_Normal3f32(+0.0,+1.0,+0.0);
		GX_Color1u32(col);
		GX_TexCoord2f32(0.0f,1.0f);

		// cara inferior
		// coordenada x de textura se aplica sobre la coordenada x del poligono
		// coordenada y de textura se aplica sobre la coordenada z del poligono
		GX_Position3f32(-0.5f,-0.5f,+0.5f);
		GX_Normal3f32(+0.0,-1.0,+0.0);
		GX_Color1u32(col);
		GX_TexCoord2f32(0.0f,0.0f);
		GX_Position3f32(+0.5f,-0.5f,+0.5f);
		GX_Normal3f32(+0.0,-1.0,+0.0);
		GX_Color1u32(col);
		GX_TexCoord2f32(1.0f,0.0f);
		GX_Position3f32(+0.5f,-0.5f,-0.5f);
		GX_Normal3f32(+0.0,-1.0,+0.0);
		GX_Color1u32(col);
		GX_TexCoord2f32(1.0f,1.0f);
		GX_Position3f32(-0.5f,-0.5f,-0.5f);
		GX_Normal3f32(+0.0,-1.0,+0.0);
		GX_Color1u32(col);
		GX_TexCoord2f32(0.0f,1.0f);
			
		// cara izquierda
		// coordenada x de textura se aplica sobre la coordenada z del poligono
		// coordenada y de textura se aplica sobre la coordenada y del poligono
		GX_Position3f32(-0.5f,+0.5f,+0.5f);
		GX_Normal3f32(-1.0,+0.0,+0.0);
		GX_Color1u32(col);
		GX_TexCoord2f32(0.0f,0.0f);
		GX_Position3f32(-0.5f,+0.5f,-0.5f);
		GX_Normal3f32(-1.0,+0.0,+0.0);
		GX_Color1u32(col);
		GX_TexCoord2f32(1.0f,0.0f);
		GX_Position3f32(-0.5f,-0.5f,-0.5f);
		GX_Normal3f32(-1.0,+0.0,+0.0);
		GX_Color1u32(col);
		GX_TexCoord2f32(1.0f,1.0f);
		GX_Position3f32(-0.5f,-0.5f,+0.5f);
		GX_Normal3f32(-1.0,+0.0,+0.0);
		GX_Color1u32(col);
		GX_TexCoord2f32(0.0f,1.0f);

		// cara derecha
		// coordenada x de textura se aplica sobre la coordenada z del poligono
		// coordenada y de textura se aplica sobre la coordenada y del poligono
		GX_Position3f32(+0.5f,+0.5f,+0.5f);
		GX_Normal3f32(+1.0,+0.0,+0.0);
		GX_Color1u32(col);
		GX_TexCoord2f32(0.0f,0.0f);
		GX_Position3f32(+0.5f,+0.5f,-0.5f);
		GX_Normal3f32(+1.0,+0.0,+0.0);
		GX_Color1u32(col);
		GX_TexCoord2f32(1.0f,0.0f);
		GX_Position3f32(+0.5f,-0.5f,-0.5f);
		GX_Normal3f32(+1.0,+0.0,+0.0);
		GX_Color1u32(col);
		GX_TexCoord2f32(1.0f,1.0f);
		GX_Position3f32(+0.5f,-0.5f,+0.5f);
		GX_Normal3f32(+1.0,+0.0,+0.0);
		GX_Color1u32(col);
		GX_TexCoord2f32(0.0f,1.0f);
    GX_End();

Edited 1 time(s). Last edit at 01/01/2012 12:25PM by wilco2009.