// Link links the attached shader objects
func (p *Program) Link() error {
var val, val2 C.GLint
C.glLinkProgram(p.i)
C.glGetProgramiv(p.i, LINK_STATUS, &val)
if val != TRUE {
C.glGetProgramiv(p.i, INFO_LOG_LENGTH, &val)
buf := make([]C.GLchar, val+1)
C.glGetProgramInfoLog(p.i, C.GLsizei(val), nil, &buf[0])
return errors.New(C.GoString((*C.char)(&buf[0])))
}
p.attr = make(map[string]C.GLuint)
C.glGetProgramiv(p.i, ACTIVE_ATTRIBUTES, &val)
C.glGetProgramiv(p.i, ACTIVE_ATTRIBUTE_MAX_LENGTH, &val2)
buf := make([]C.char, val2)
for i := C.GLuint(0); i < C.GLuint(val); i++ {
C.glGetActiveAttrib(p.i, i, C.GLsizei(val2), nil, nil, nil, (*C.GLchar)(&buf[0]))
p.attr[C.GoString(&buf[0])] = C.GLuint(C.glGetAttribLocation(p.i, (*C.GLchar)(&buf[0])))
}
p.uni = make(map[string]C.GLint)
C.glGetProgramiv(p.i, ACTIVE_UNIFORMS, &val)
C.glGetProgramiv(p.i, ACTIVE_UNIFORM_MAX_LENGTH, &val2)
buf = make([]C.char, val2)
for i := C.GLuint(0); i < C.GLuint(val); i++ {
C.glGetActiveUniform(p.i, i, C.GLsizei(val2), nil, nil, nil, (*C.GLchar)(&buf[0]))
p.uni[C.GoString(&buf[0])] = C.glGetUniformLocation(p.i, (*C.GLchar)(&buf[0]))
}
return nil
}
func LinkProgram(p Program) {
defer func() {
errstr := errDrain()
log.Printf("gl.LinkProgram(%v) %v", p, errstr)
}()
C.glLinkProgram(p.c())
}
func (program *Program) Link() {
C.glLinkProgram(program.id)
status := C.GLint(0)
C.glGetProgramiv(program.id, C.GL_LINK_STATUS, &status)
if status != C.GL_TRUE {
loglen := C.GLint(0)
C.glGetProgramiv(program.id, C.GL_INFO_LOG_LENGTH, &loglen)
log := (*C.GLchar)(C.malloc(C.size_t(loglen)))
defer C.free(unsafe.Pointer(log))
C.glGetProgramInfoLog(program.id, C.GLsizei(loglen), nil, log)
panic(fmt.Errorf("Failed to link shader: %s", C.GoString((*C.char)(log))))
}
}
func createProgram(vertShaderSrc string, fragShaderSrc string) C.GLuint {
vertShader := loadShader(C.GL_VERTEX_SHADER, vertShaderSrc)
fragShader := loadShader(C.GL_FRAGMENT_SHADER, fragShaderSrc)
prog := C.glCreateProgram()
if prog == 0 {
panic("Failed to create shader program")
}
C.glAttachShader(prog, vertShader)
checkGLError()
C.glAttachShader(prog, fragShader)
checkGLError()
C.glLinkProgram(prog)
var linkStatus C.GLint
C.glGetProgramiv(prog, C.GL_LINK_STATUS, &linkStatus)
if linkStatus != C.GL_TRUE {
log := GetProgramInfoLog(prog)
panic(fmt.Errorf("Failed to link program: %v", log))
}
return prog
}
func LinkProgram(p Program) {
C.glLinkProgram(p.c())
}
func LinkProgram(
program uint32) {
C.glLinkProgram(
C.GLuint(program))
}
// Link links a program object.
func (p Program) Link() {
C.glLinkProgram(C.GLuint(p))
}
