func CreateShader(ty Enum) (r0 Shader) {
defer func() {
errstr := errDrain()
log.Printf("gl.CreateShader(%v) %v%v", ty, r0, errstr)
}()
return Shader{Value: uint32(C.glCreateShader(ty.c()))}
}
// NewShader creates a shader object of type typ, loads it with source code src and compiles it
func NewShader(typ int, src string) (Shader, error) {
var val C.GLint
shad := C.glCreateShader(C.GLenum(typ))
s := (*C.GLchar)(C.CString(src))
C.glShaderSource(shad, 1, &s, nil)
C.glCompileShader(shad)
C.glGetShaderiv(shad, COMPILE_STATUS, &val)
if val != TRUE {
C.glGetShaderiv(shad, INFO_LOG_LENGTH, &val)
buf := make([]C.GLchar, val+1)
C.glGetShaderInfoLog(shad, C.GLsizei(val), nil, &buf[0])
C.glDeleteShader(shad)
return Shader(0), errors.New(C.GoString((*C.char)(&buf[0])))
}
return Shader(shad), nil
}
func loadShader(shaderType C.GLenum, source string) C.GLuint {
handle := C.glCreateShader(shaderType)
if handle == 0 {
panic(fmt.Errorf("Failed to create shader of type %v", shaderType))
}
sourceC := C.CString(source)
defer C.free(unsafe.Pointer(sourceC))
C.glShaderSource(handle, 1, (**C.GLchar)(unsafe.Pointer(&sourceC)), (*C.GLint)(unsafe.Pointer(nil)))
C.glCompileShader(handle)
var compiled C.GLint
C.glGetShaderiv(handle, C.GL_COMPILE_STATUS, &compiled)
if compiled != C.GL_TRUE {
log := GetShaderInfoLog(handle)
panic(fmt.Errorf("Failed to compile shader: %v, shader: %v", log, source))
}
return handle
}
func CreateShader(ty Enum) Shader {
return Shader{Value: uint32(C.glCreateShader(ty.c()))}
}
func CreateShader(type_ Enum) uint32 {
return uint32(C.glCreateShader(
C.GLenum(type_)))
}
func CreateShader(type_ GLenum) Shader { return Shader(C.glCreateShader(C.GLenum(type_))) }
func CreateShader(stype ShaderType) Shader {
return Shader(C.glCreateShader(C.GLenum(stype)))
}
// CreateShader creates a shader object.
func CreateShader(kind ShaderKind) Shader {
sh := C.glCreateShader(C.GLenum(kind))
return Shader(sh)
}
func CreateShader(type_ uint) uint {
return uint(C.glCreateShader(C.GLenum(type_)))
}