Share same vertex layout across multiple vertex shaders

opengl_input_elements.cpp

struct InputElement {
	const char* name;
	ShaderFormat format;
	int offset;
	int inputSlot;
	bool perInstance;
};

static InputElement elements[] = {
	{"POSITION", SF_R32G32B32_FLOAT, 0, 0, false},
	{"COLOR", SF_R8G8B8A8_UNORM, 12, 0, false},
	{"TEXCOORD", SF_R32G32_FLOAT, 16, 0, false},
};

GLuint CreateProgramWithElements()
{
	GLuint program = glCreateProgram();
	for (int i = 0; i < numElements; i++) {
		glBindAttribLocation(program, i, elements[i].name);
	}
	return program;
}

void CreatePrograms()
{
	GLuint a = CreateProgramWithElements();
	GLuint b = CreateProgramWithElements();
	...