PrepVertShader()

void ShadingManager::PrepVertShader ( )

private

Definition at line 432 of file ShadingManager.cpp.

{
    vsh->Clear();
    vsh->AddTopLine(GLSLLine("layout (location = 0) in vec4 aPos;", "The world position of the vertex"));
    vsh->AddTopLine(GLSLLine("layout (location = 1) in vec4 aNorm;", "The vertex normals"));
    vsh->AddTopLine(GLSLLine("layout (location = 2) in vec2 aTexCoord;", "The texture coordinates of the vertex"));
    vsh->AddTopLine(GLSLLine("layout (location = 3) in vec4 aExtras1;", "Extra data like generated height, erosion delta, etc."));
    vsh->AddTopLine(GLSLLine("", "The Output passed to the Geometry Shader"));
    vsh->AddTopLine(GLSLLine(R"(
out DATA
{
    float height;
    vec3 FragPos;
    vec3 Normal;
    vec2 TexCoord;
    vec4 Extras1;
} data_out;
)"));
 
    vsh->AddUniform(GLSLUniform("_Model", "mat4"));
    vsh->AddUniform(GLSLUniform("_PV", "mat4"));
    vsh->AddUniform(GLSLUniform("_TextureBake", "float", "0.0f"));
    vsh->AddUniform(GLSLUniform("_Scale", "float", "1.0f"));
    vsh->AddUniform(GLSLUniform("_Tiled", "float", "0.0f"));
    vsh->AddUniform(GLSLUniform("_NumTiles", "float", "0.0f"));
    vsh->AddUniform(GLSLUniform("_TileX", "float", "0.0f"));
    vsh->AddUniform(GLSLUniform("_TileY", "float", "0.0f"));
    
    GLSLFunction main("main");
    main.AddLine(GLSLLine("", "TEMP"));
    main.AddLine(GLSLLine(R"(
 
if(_TextureBake == 0.0f)
    gl_Position = vec4(aPos.x, aPos.y, aPos.z, 1.0f);
else
{
    if(_Tiled == 0.0f)
    {
        gl_Position = vec4(aPos.x/_Scale, aPos.z/_Scale, 0.0f, 1.0f);
    }
    else
    {
        float factor = _NumTiles / _Scale;
        gl_Position = vec4(aPos.x * factor + _TileX, aPos.z * factor + _TileY, 0.0f, 1.0f);
    }
}
)"));
    main.AddLine(GLSLLine("data_out.height = aExtras1.x;", "The actual generated noise value"));
    main.AddLine(GLSLLine("data_out.FragPos = vec3(aPos.x, aPos.y, aPos.z);", "The world position"));
    main.AddLine(GLSLLine("data_out.Normal = vec3(aNorm.x, aNorm.y, aNorm.z);", "The vertex normals"));
    main.AddLine(GLSLLine("data_out.TexCoord = aTexCoord;", "The texture coordinates"));
    main.AddLine(GLSLLine("data_out.Extras1 = aExtras1;", "The texture coordinates"));
 
 
    vsh->AddFunction(main);
}