def set_background(self, r, g, b, alpha):
"""Set the Display background. **NB the actual drawing of the background
happens during the rendering of the framebuffer by the shader so if no
draw() is done by anything during each Display loop the screen will
remain black** If you want to see just the background you will have to
draw() something out of view (i.e. behind) the Camera.
*r, g, b*
Color values for the display
*alpha*
Opacity of the color. An alpha of 0 means a transparent background,
an alpha of 1 means full opaque.
"""
opengles.glClearColor(GLclampf(r), GLclampf(g), GLclampf(b), GLclampf(alpha))
opengles.glColorMask(GLboolean(1), GLboolean(1), GLboolean(1), GLboolean(alpha < 1.0))
def set_background(self, r, g, b, alpha):
"""Set the Display background. **NB the actual drawing of the background
happens during the rendering of the framebuffer by the shader so if no
draw() is done by anything during each Display loop the screen will
remain black** If you want to see just the background you will have to
draw() something out of view (i.e. behind) the Camera.
*r, g, b*
Color values for the display
*alpha*
Opacity of the color. An alpha of 0 means a transparent background,
an alpha of 1 means full opaque.
"""
opengles.glClearColor(c_float(r), c_float(g), c_float(b), c_float(alpha))
opengles.glColorMask(1, 1, 1, int(alpha < 1.0))
def set_background(self, r, g, b, alpha):
"""Set the Display background. **NB the actual drawing of the background
happens during the rendering of the framebuffer by the shader so if no
draw() is done by anything during each Display loop the screen will
remain black** If you want to see just the background you will have to
draw() something out of view (i.e. behind) the Camera.
*r, g, b*
Color values for the display
*alpha*
Opacity of the color. An alpha of 0 means a transparent background,
an alpha of 1 means full opaque.
"""
if alpha < 1.0 and (not self.opengl.use_glx) and (not PLATFORM == PLATFORM_PI):
LOGGER.warning("create Display with (...use_glx=True) for transparent background on x11 window. libGLX needs to be available")
opengles.glClearColor(GLclampf(r), GLclampf(g), GLclampf(b), GLclampf(alpha))
opengles.glColorMask(GLboolean(1), GLboolean(1), GLboolean(1), GLboolean(alpha < 1.0))
def create_display(self,
x=0,
y=0,
w=0,
h=0,
depth=24,
samples=4,
layer=0,
display_config=DISPLAY_CONFIG_DEFAULT,
window_title='',
use_glx=False):
self.use_glx = use_glx and (
X_WINDOW and hasattr(glx, 'glXChooseFBConfig')
) # only use glx if x11 window and glx available
self.display_config = display_config
self.window_title = window_title.encode()
if not self.use_glx:
self.display = openegl.eglGetDisplay(EGL_DEFAULT_DISPLAY)
assert self.display != EGL_NO_DISPLAY and self.display is not None
for smpl in [
samples, 0
]: # try with samples first but ANGLE dll can't cope so drop to 0 for windows
r = openegl.eglInitialize(self.display, None, None)
attribute_list = (EGLint * 19)(
EGL_RED_SIZE, 8, EGL_GREEN_SIZE, 8, EGL_BLUE_SIZE, 8,
EGL_DEPTH_SIZE, depth, EGL_ALPHA_SIZE, 8, EGL_BUFFER_SIZE,
32, EGL_SAMPLES, smpl, EGL_STENCIL_SIZE, 8,
EGL_SURFACE_TYPE, EGL_WINDOW_BIT, EGL_NONE)
numconfig = EGLint(0)
poss_configs = (EGLConfig * 5)(*(EGLConfig()
for _ in range(5)))
r = openegl.eglChooseConfig(self.display, attribute_list,
poss_configs,
EGLint(len(poss_configs)),
byref(numconfig))
context_attribs = (EGLint * 3)(EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE)
if numconfig.value > 0:
self.config = poss_configs[0]
self.context = openegl.eglCreateContext(
self.display, self.config, EGL_NO_CONTEXT,
context_attribs)
if self.context != EGL_NO_CONTEXT:
break
assert self.context != EGL_NO_CONTEXT and self.context is not None
self.create_surface(x, y, w, h, layer)
opengles.glDepthRangef(GLfloat(0.0), GLfloat(1.0))
opengles.glClearColor(GLfloat(0.3), GLfloat(0.3), GLfloat(0.7),
GLfloat(1.0))
opengles.glBindFramebuffer(GL_FRAMEBUFFER, GLuint(0))
# get GL v GLES and version num for shader translation
version = opengles.glGetString(GL_VERSION)
version = ctypes.cast(version, c_char_p).value
if b"ES" in version:
for s in version.split():
if b'.' in s:
self.gl_id = b"GLES" + s.split(b'.')[0]
break
#Setup default hints
opengles.glEnable(GL_CULL_FACE)
opengles.glCullFace(GL_BACK)
opengles.glFrontFace(GL_CW)
opengles.glEnable(GL_DEPTH_TEST)
if b"GLES" not in self.gl_id:
if b"2" in self.gl_id:
opengles.glEnable(GL_VERTEX_PROGRAM_POINT_SIZE)
else:
opengles.glEnable(GL_PROGRAM_POINT_SIZE) # only in > GL3
opengles.glEnable(GL_POINT_SPRITE)
opengles.glDepthFunc(GL_LESS)
opengles.glDepthMask(GLboolean(True))
opengles.glHint(GL_GENERATE_MIPMAP_HINT, GL_NICEST)
opengles.glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, 1,
GL_ONE_MINUS_SRC_ALPHA)
opengles.glColorMask(GLboolean(True), GLboolean(True), GLboolean(True),
GLboolean(False))
#opengles.glEnableClientState(GL_VERTEX_ARRAY)
#opengles.glEnableClientState(GL_NORMAL_ARRAY)
self.max_texture_size = GLint(0)
opengles.glGetIntegerv(GL_MAX_TEXTURE_SIZE,
byref(self.max_texture_size))
self.active = True
