func ShaderSource(s Shader, src string) {
defer func() {
errstr := errDrain()
log.Printf("gl.ShaderSource(%v, %v) %v", s, src, errstr)
}()
str := (*C.GLchar)(C.CString(src))
defer C.free(unsafe.Pointer(str))
C.glShaderSource(s.c(), 1, &str, nil)
}
func (shader Shader) Source(source string) {
csource := glString(source)
defer freeString(csource)
var one C.GLint = C.GLint(len(source))
C.glShaderSource(C.GLuint(shader), 1, &csource, &one)
}
func ShaderSource(
shader uint32, count Sizei,
string_ *string, length *int32) {
s := glString(*string_)
C.glShaderSource(
C.GLuint(shader),
C.GLsizei(count),
&s,
(*C.GLint)(length))
string_ = goString(s)
}
// Source replaces the source code in a shader object.
func (s Shader) Source(src ...string) {
if len(src) == 0 {
return
}
csrc := make([]*C.GLchar, len(src))
for i, s := range src {
csrc[i] = (*C.GLchar)(C.CString(s))
defer C.free(unsafe.Pointer(csrc[i]))
}
C.glShaderSource(C.GLuint(s), C.GLsizei(len(src)), &csrc[0], nil)
}
func (shader Shader) Source(source ...string) {
count := C.GLsizei(len(source))
cstrings := make([]*C.GLchar, count)
length := make([]C.GLint, count)
for i, s := range source {
csource := glString(s)
cstrings[i] = csource
length[i] = C.GLint(len(s))
defer freeString(csource)
}
C.glShaderSource(C.GLuint(shader), count, (**_Ctype_GLchar)(unsafe.Pointer(&cstrings[0])), (*_Ctype_GLint)(unsafe.Pointer(&length[0])))
}
// 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 ShaderSource(s Shader, src string) {
str := (*C.GLchar)(C.CString(src))
defer C.free(unsafe.Pointer(str))
C.glShaderSource(s.c(), 1, &str, nil)
}
func (shader Shader) Source(src string) {
cstr := (*C.GLchar)(C.CString(src))
defer C.free(unsafe.Pointer(cstr))
slen := C.GLint(len(src))
C.glShaderSource(C.GLuint(shader), 1, &cstr, &slen)
}
func ShaderSource(shader uint, s string) {
cs := CString(s)
defer C.free(unsafe.Pointer(cs))
C.glShaderSource(C.GLuint(shader), C.GLsizei(1), &cs, nil)
}
