cShaderProgram::cShaderProgram( const std::vector<cShader*>& Shaders, const std::string& name ) :
mHandler(0),
mId(0)
{
AddToManager( name );
Init();
AddShaders( Shaders );
Link();
}
void initTessexample(){
//test_tcs.glsl Tessellation Control Shader
// test_tes.glsl Tesselation Evaluation Shader
shaderProgram = AddShaders("test_vs.glsl", "test_fs.glsl", NULL, NULL, "test_tcs.glsl", "test_tes.glsl", NULL);
glEnable(GL_DEPTH_TEST); // enable depth-testing
glDepthFunc(GL_LESS); // depth-testing interprets a smaller value as "closer"
glClearColor(0.2, 0.2, 0.2, 1.0);
/* i've made the mesh 2 triangles, to help illustrate the numbers used for
patch size versus points to draw */
GLfloat points[] = {
0.0f, 0.75f, 0.0f,
0.5f, 0.25f, 0.0f,
-0.5f, 0.25f, 0.0f,
0.5f, -0.25f, 0.0f,
0.0f, -0.75f, 0.0f,
-0.5f, -0.25f, 0.0f
};
glGenBuffers(1, &tvbo);
glBindBuffer(GL_ARRAY_BUFFER, tvbo);
glBufferData(GL_ARRAY_BUFFER, sizeof(points), points, GL_STATIC_DRAW);
glGenVertexArrays(1, &tvao);
glBindVertexArray(tvao);
glBindBuffer(GL_ARRAY_BUFFER, tvbo);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, NULL);
glEnableVertexAttribArray(0);
}
