func BindBuffer(target Enum, b Buffer) {
defer func() {
errstr := errDrain()
log.Printf("gl.BindBuffer(%v, %v) %v", target, b, errstr)
}()
C.glBindBuffer(target.c(), b.c())
}
func (game *game) initGL() {
log.Printf("GL_VERSION: %v GL_RENDERER: %v GL_VENDOR %v\n",
GetString(C.GL_VERSION), GetString(C.GL_RENDERER), GetString(C.GL_VENDOR))
log.Printf("GL_EXTENSIONS: %v\n", GetString(C.GL_EXTENSIONS))
C.glClearColor(0.0, 0.0, 0.0, 1.0)
C.glEnable(C.GL_CULL_FACE)
C.glEnable(C.GL_DEPTH_TEST)
game.prog = createProgram(vertShaderSrcDef, fragShaderSrcDef)
posAttrib := attribLocation(game.prog, "vPosition")
game.offsetUni = uniformLocation(game.prog, "offset")
game.colorUni = uniformLocation(game.prog, "color")
C.glUseProgram(game.prog)
C.glEnableVertexAttribArray(C.GLuint(posAttrib))
vertVBO := GenBuffer()
checkGLError()
C.glBindBuffer(C.GL_ARRAY_BUFFER, vertVBO)
verts := []float32{.0, 0.5, -0.5, -0.5, 0.5, -0.5}
C.glBufferData(C.GL_ARRAY_BUFFER, C.GLsizeiptr(len(verts)*int(unsafe.Sizeof(verts[0]))), unsafe.Pointer(&verts[0]), C.GL_STATIC_DRAW)
C.glVertexAttribPointer(C.GLuint(posAttrib), 2, C.GL_FLOAT, C.GL_FALSE, 0, unsafe.Pointer(uintptr(0)))
}
func BindBuffer(target Enum, b Buffer) {
C.glBindBuffer(target.c(), b.c())
}
func BindBuffer(
target Enum, buffer uint32) {
C.glBindBuffer(
C.GLenum(target),
C.GLuint(buffer))
}
// Unbind calls glBindBuffer with a 0 argument
func (*Buffer) Unbind(targ int) {
C.glBindBuffer(C.GLenum(targ), 0)
}
// Bind calls glBindBuffer
func (buf *Buffer) Bind(targ int) {
C.glBindBuffer(C.GLenum(targ), buf.i)
}
func BindBuffer(target BufferTarget, buffer Buffer) {
C.glBindBuffer(C.GLenum(target), C.GLuint(buffer))
}
// Remove buffer binding
func (buffer Buffer) Unbind(target GLenum) {
C.glBindBuffer(C.GLenum(target), C.GLuint(0))
}
// Bind binds a named buffer object.
func (b Buffer) Bind(targ BufferTarget) {
C.glBindBuffer(C.GLenum(targ), C.GLuint(b))
}