def draw(self):
# For debug purposes
# gpu_Indices_enable_state()
_offset_cur = 0
proj_mat = self.rv3d.perspective_matrix.copy()
multisample_enabled = bgl.glIsEnabled(bgl.GL_MULTISAMPLE)
if multisample_enabled:
bgl.glDisable(bgl.GL_MULTISAMPLE)
dither_enabled = bgl.glIsEnabled(bgl.GL_DITHER)
if dither_enabled:
bgl.glDisable(bgl.GL_DITHER)
# if self.proj_mat != proj_mat:
GPU_Indices.set_ProjectionMatrix(proj_mat)
# clear buffer
# bgl.glClearColor(0.0, 0.0, 0.0, 0.0)
# bgl.glClear(bgl.GL_COLOR_BUFFER_BIT | bgl.GL_DEPTH_BUFFER_BIT)
for i, snap_obj in enumerate(self.snap_objects):
obj = snap_obj.data[0]
# create shader and data for detail analysis
if len(snap_obj.data) == 1:
# tim = time.time()
snap_obj.data.append(GPU_Indices(obj, snap_obj.typ))
# print("create data %.4f" % (time.time() - tim))
snap_obj.data[1].set_draw_mode(
(self._snap_mode & (KNOT | SEGS | SEGS_CENTER
| SEGS_PERPENDICULAR | SEGS_PARALLEL)) > 0,
(self._snap_mode & ORIGIN) > 0, (self._snap_mode & BOUNDS) > 0)
snap_obj.data[1].set_ModelViewMatrix(snap_obj.mat)
snap_obj.data[1].draw(_offset_cur)
_offset_cur += snap_obj.data[1].get_tot_elems()
if dither_enabled:
bgl.glEnable(bgl.GL_DITHER
) # dithering and AA break color coding, so disable #
if multisample_enabled:
bgl.glEnable(bgl.GL_MULTISAMPLE)
def _gl_state_push(self):
self._is_point_size_enabled = bgl.glIsEnabled(
bgl.GL_PROGRAM_POINT_SIZE)
if self._is_point_size_enabled:
bgl.glDisable(bgl.GL_PROGRAM_POINT_SIZE)
# draw 3d point OpenGL in the 3D View
bgl.glEnable(bgl.GL_BLEND)
def start(context):
assert not ScissorStack.started
rgn = context.region
ScissorStack.context = context
ScissorStack.box = (rgn.x, rgn.y, rgn.width, rgn.height)
bgl.glGetIntegerv(bgl.GL_SCISSOR_BOX, ScissorStack.buf)
ScissorStack.scissor_enabled = (bgl.glIsEnabled(bgl.GL_SCISSOR_TEST) == bgl.GL_TRUE)
ScissorStack.stack = [tuple(ScissorStack.buf)]
ScissorStack.started = True
if not ScissorStack.scissor_enabled:
bgl.glEnable(bgl.GL_SCISSOR_TEST)
def start(context):
assert not ScissorStack.started
rgn = context.region
ScissorStack.context = context
ScissorStack.box = (rgn.x, rgn.y, rgn.width, rgn.height)
bgl.glGetIntegerv(bgl.GL_SCISSOR_BOX, ScissorStack.buf)
ScissorStack.scissor_enabled = (bgl.glIsEnabled(bgl.GL_SCISSOR_TEST) == bgl.GL_TRUE)
ScissorStack.stack = [tuple(ScissorStack.buf)]
ScissorStack.started = True
if not ScissorStack.scissor_enabled:
bgl.glEnable(bgl.GL_SCISSOR_TEST)
def draw_callback_common(self, context, ots):
if Pref.use_alpha_clip:
bgl.glAlphaFunc(bgl.GL_GREATER, 0.1)
bgl.glEnable(bgl.GL_ALPHA_TEST)
orig_is_enabled_depthtest = bgl.glIsEnabled(bgl.GL_DEPTH_TEST)
bgl.glEnable(bgl.GL_DEPTH_TEST)
bgl.glColor4f(1.0, 1.0, 1.0, 1.0)
bgl.glEnable(bgl.GL_BLEND)
bgl.glEnable(bgl.GL_TEXTURE_2D)
texcos = [(0.,0.), (1.,0.), (1.,1.), (0.,1.)]
fr = context.scene.frame_current
for l,obj,tex in ots:
ps = [obj.matrix_world*v.co for v in obj.data.vertices[0:4]]
if tex.blendmode == BlendMode.ALPHAOVER:
bgl.glBlendFunc(bgl.GL_SRC_ALPHA, bgl.GL_ONE_MINUS_SRC_ALPHA)
bgl.glBlendEquation(bgl.GL_FUNC_ADD)
elif tex.blendmode == BlendMode.ADDITIVE:
bgl.glBlendFunc(bgl.GL_SRC_ALPHA, bgl.GL_ONE)
bgl.glBlendEquation(bgl.GL_FUNC_ADD)
tex.bind()
bgl.glBegin(bgl.GL_QUADS)
for p,t in zip(ps, texcos):
bgl.glTexCoord2f(*t)
bgl.glVertex3f(*p)
bgl.glEnd()
#bgl.glDepthMask(bgl.GL_TRUE)
bgl.glBlendFunc(bgl.GL_SRC_ALPHA, bgl.GL_ONE_MINUS_SRC_ALPHA)
bgl.glBlendEquation(bgl.GL_FUNC_ADD)
bgl.glDisable(bgl.GL_TEXTURE_2D)
bgl.glDisable(bgl.GL_BLEND)
if Pref.use_alpha_clip:
bgl.glDisable(bgl.GL_ALPHA_TEST)
if not orig_is_enabled_depthtest:
bgl.glDisable(bgl.GL_DEPTH_TEST)
def render(self, draw_data):
io = self.io
shader = self._bl_shader
display_width, display_height = io.display_size
fb_width = int(display_width * io.display_fb_scale[0])
fb_height = int(display_height * io.display_fb_scale[1])
if fb_width == 0 or fb_height == 0:
return
draw_data.scale_clip_rects(*io.display_fb_scale)
# backup GL state
(
last_program,
last_texture,
last_active_texture,
last_array_buffer,
last_element_array_buffer,
last_vertex_array,
last_blend_src,
last_blend_dst,
last_blend_equation_rgb,
last_blend_equation_alpha,
last_viewport,
last_scissor_box,
) = self._backup_integers(
gl.GL_CURRENT_PROGRAM,
1,
gl.GL_TEXTURE_BINDING_2D,
1,
gl.GL_ACTIVE_TEXTURE,
1,
gl.GL_ARRAY_BUFFER_BINDING,
1,
gl.GL_ELEMENT_ARRAY_BUFFER_BINDING,
1,
gl.GL_VERTEX_ARRAY_BINDING,
1,
gl.GL_BLEND_SRC,
1,
gl.GL_BLEND_DST,
1,
gl.GL_BLEND_EQUATION_RGB,
1,
gl.GL_BLEND_EQUATION_ALPHA,
1,
gl.GL_VIEWPORT,
4,
gl.GL_SCISSOR_BOX,
4,
)
last_enable_blend = gl.glIsEnabled(gl.GL_BLEND)
last_enable_cull_face = gl.glIsEnabled(gl.GL_CULL_FACE)
last_enable_depth_test = gl.glIsEnabled(gl.GL_DEPTH_TEST)
last_enable_scissor_test = gl.glIsEnabled(gl.GL_SCISSOR_TEST)
gl.glEnable(gl.GL_BLEND)
gl.glBlendEquation(gl.GL_FUNC_ADD)
gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
gl.glDisable(gl.GL_CULL_FACE)
gl.glDisable(gl.GL_DEPTH_TEST)
gl.glEnable(gl.GL_SCISSOR_TEST)
gl.glActiveTexture(gl.GL_TEXTURE0)
gl.glViewport(0, 0, int(fb_width), int(fb_height))
ortho_projection = (2.0 / display_width, 0.0, 0.0, 0.0, 0.0,
2.0 / -display_height, 0.0, 0.0, 0.0, 0.0, -1.0,
0.0, -1.0, 1.0, 0.0, 1.0)
shader.bind()
shader.uniform_float("ProjMtx", ortho_projection)
shader.uniform_int("Texture", 0)
for commands in draw_data.commands_lists:
size = commands.idx_buffer_size * imgui.INDEX_SIZE // 4
address = commands.idx_buffer_data
ptr = C.cast(address, C.POINTER(C.c_int))
idx_buffer_np = np.ctypeslib.as_array(ptr, shape=(size, ))
size = commands.vtx_buffer_size * imgui.VERTEX_SIZE // 4
address = commands.vtx_buffer_data
ptr = C.cast(address, C.POINTER(C.c_float))
vtx_buffer_np = np.ctypeslib.as_array(ptr, shape=(size, ))
vtx_buffer_shaped = vtx_buffer_np.reshape(-1,
imgui.VERTEX_SIZE // 4)
idx_buffer_offset = 0
for command in commands.commands:
x, y, z, w = command.clip_rect
gl.glScissor(int(x), int(fb_height - w), int(z - x),
int(w - y))
vertices = vtx_buffer_shaped[:, :2]
uvs = vtx_buffer_shaped[:, 2:4]
colors = vtx_buffer_shaped.view(np.uint8)[:, 4 * 4:]
colors = colors.astype('f') / 255.0
indices = idx_buffer_np[idx_buffer_offset:idx_buffer_offset +
command.elem_count]
gl.glBindTexture(gl.GL_TEXTURE_2D, command.texture_id)
batch = batch_for_shader(shader,
'TRIS', {
"Position": vertices,
"UV": uvs,
"Color": colors,
},
indices=indices)
batch.draw(shader)
idx_buffer_offset += command.elem_count
# restore modified GL state
gl.glUseProgram(last_program)
gl.glActiveTexture(last_active_texture)
gl.glBindTexture(gl.GL_TEXTURE_2D, last_texture)
gl.glBindVertexArray(last_vertex_array)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, last_array_buffer)
gl.glBindBuffer(gl.GL_ELEMENT_ARRAY_BUFFER, last_element_array_buffer)
gl.glBlendEquationSeparate(last_blend_equation_rgb,
last_blend_equation_alpha)
gl.glBlendFunc(last_blend_src, last_blend_dst)
if last_enable_blend:
gl.glEnable(gl.GL_BLEND)
else:
gl.glDisable(gl.GL_BLEND)
if last_enable_cull_face:
gl.glEnable(gl.GL_CULL_FACE)
else:
gl.glDisable(gl.GL_CULL_FACE)
if last_enable_depth_test:
gl.glEnable(gl.GL_DEPTH_TEST)
else:
gl.glDisable(gl.GL_DEPTH_TEST)
if last_enable_scissor_test:
gl.glEnable(gl.GL_SCISSOR_TEST)
else:
gl.glDisable(gl.GL_SCISSOR_TEST)
gl.glViewport(last_viewport[0], last_viewport[1], last_viewport[2],
last_viewport[3])
gl.glScissor(last_scissor_box[0], last_scissor_box[1],
last_scissor_box[2], last_scissor_box[3])
def __get__(self, instance, owner):
return glIsEnabled(state_id)
def snap_get(self, mval, main_snap_obj=None):
ret = None, None, None
self.mval[:] = mval
snap_vert = self._snap_mode & VERT != 0
snap_edge = self._snap_mode & EDGE != 0
snap_face = self._snap_mode & FACE != 0
_Internal.gpu_Indices_enable_state()
self._offscreen.bind()
#bgl.glDisable(bgl.GL_DITHER) # dithering and AA break color coding, so disable #
#multisample_enabled = bgl.glIsEnabled(bgl.GL_MULTISAMPLE)
#bgl.glDisable(bgl.GL_MULTISAMPLE)
bgl.glEnable(bgl.GL_DEPTH_TEST)
is_point_size_enabled = bgl.glIsEnabled(bgl.GL_PROGRAM_POINT_SIZE)
if is_point_size_enabled:
bgl.glDisable(bgl.GL_PROGRAM_POINT_SIZE)
bgl.glPointSize(4.0)
proj_mat = self.rv3d.perspective_matrix.copy()
if self.proj_mat != proj_mat:
self.proj_mat = proj_mat
_Internal.gpu_Indices_set_ProjectionMatrix(self.proj_mat)
self.update_drawing()
ray_dir, ray_orig = self.get_ray(mval)
for i, snap_obj in enumerate(self.snap_objects[self.drawn_count:],
self.drawn_count):
obj = snap_obj.data[0]
try:
bbmin = Vector(obj.bound_box[0])
bbmax = Vector(obj.bound_box[6])
except ReferenceError:
self.snap_objects.remove(snap_obj)
continue
if bbmin != bbmax:
MVP = proj_mat @ snap_obj.mat
mat_inv = snap_obj.mat.inverted_safe()
ray_orig_local = mat_inv @ ray_orig
ray_dir_local = mat_inv.to_3x3() @ ray_dir
in_threshold = _Internal.intersect_boundbox_threshold(
self, MVP, ray_orig_local, ray_dir_local, bbmin, bbmax)
else:
proj_co = _Internal.project_co_v3(self,
snap_obj.mat.translation)
dist = self.mval - proj_co
in_threshold = abs(dist.x) < self._dist_px and abs(
dist.y) < self._dist_px
#snap_obj.data[1] = primitive_point
if in_threshold:
if len(snap_obj.data) == 1:
from .mesh_drawing import GPU_Indices_Mesh
is_bound = obj.display_type == 'BOUNDS'
draw_face = snap_face and not is_bound and obj.display_type != 'WIRE'
draw_edge = snap_edge and not is_bound
draw_vert = snap_vert and not is_bound
snap_obj.data.append(
GPU_Indices_Mesh(self.depsgraph, obj, draw_face,
draw_edge, draw_vert))
snap_obj.data[1].set_draw_mode(snap_face, snap_edge, snap_vert)
snap_obj.data[1].set_ModelViewMatrix(snap_obj.mat)
if snap_obj == main_snap_obj:
snap_obj.data[1].Draw(self._offset_cur, -0.0001)
else:
snap_obj.data[1].Draw(self._offset_cur)
self._offset_cur += snap_obj.data[1].get_tot_elems()
tmp = self.snap_objects[self.drawn_count]
self.snap_objects[self.drawn_count] = self.snap_objects[i]
self.snap_objects[i] = tmp
self.drawn_count += 1
self._read_buffer(mval)
#import numpy as np
#a = np.array(self._snap_buffer)
#print(a)
snap_obj, index = self._get_nearest_index()
#print("index:", index)
if snap_obj:
ret = self._get_loc(snap_obj, index)
if is_point_size_enabled:
bgl.glEnable(bgl.GL_PROGRAM_POINT_SIZE)
bgl.glDisable(bgl.GL_DEPTH_TEST)
_Internal.gpu_Indices_restore_state()
self._offscreen.unbind()
return (snap_obj, *ret)
def snap(self, mval):
t = time.time()
ret = None
self.mval[:] = mval
with self._offscreen.bind():
multisample_enabled = bgl.glIsEnabled(bgl.GL_MULTISAMPLE)
check_error("glIsEnabled")
if multisample_enabled:
bgl.glDisable(bgl.GL_MULTISAMPLE)
check_error("glDisable")
dither_enabled = bgl.glIsEnabled(bgl.GL_DITHER)
check_error("glIsEnabled")
if dither_enabled:
bgl.glDisable(bgl.GL_DITHER)
check_error("glDisable")
proj_mat = self.rv3d.perspective_matrix.copy()
if self.proj_mat != proj_mat:
self.proj_mat = proj_mat
GPU_Indices.set_ProjectionMatrix(self.proj_mat)
self.update_all()
ray_dir, ray_orig = self.get_ray(mval)
for i, snap_obj in enumerate(self.snap_objects[self.drawn_count:],
self.drawn_count):
obj = snap_obj.data[0]
# origins
if snap_obj.typ == TYP_ORIGIN: #obj.__class__.__name__ == 'list':
# filter by visibility
in_threshold = (self._snap_mode & ORIGIN)
elif snap_obj.typ == TYP_BOUNDS:
in_threshold = (self._snap_mode & BOUNDS)
else:
# allow to hide some objects from snap, eg active object when moving
if obj is None or obj.name in self._exclude or not obj.visible_get(
):
# print("exclude %s" % obj.name)
continue
bbmin = Vector(obj.bound_box[0])
bbmax = Vector(obj.bound_box[6])
# check objects under ray using bound box
if bbmin != bbmax:
MVP = proj_mat @ snap_obj.mat
mat_inv = snap_obj.mat.inverted()
ray_orig_local = mat_inv @ ray_orig
ray_dir_local = ray_dir @ snap_obj.mat
in_threshold = intersect_boundbox_threshold(
self, MVP, ray_orig_local, ray_dir_local, bbmin,
bbmax)
else:
dist = self._max_pixel_dist(snap_obj.mat.translation)
in_threshold = dist < self._dist_px
# print("ray_orig %s ray_dir %s %s in_threshold %s" % (ray_orig, ray_dir, obj.name, in_threshold))
if in_threshold:
# create shader and data for detail analysis
if len(snap_obj.data) == 1:
# tim = time.time()
snap_obj.data.append(GPU_Indices(obj, snap_obj.typ))
# print("create data %.4f" % (time.time() - tim))
snap_obj.data[1].set_draw_mode(
(self._snap_mode &
(KNOT | SEGS | SEGS_CENTER | SEGS_PERPENDICULAR
| SEGS_PARALLEL)) > 0,
(self._snap_mode & ORIGIN) > 0,
(self._snap_mode & BOUNDS) > 0)
snap_obj.data[1].set_ModelViewMatrix(snap_obj.mat)
snap_obj.data[1].draw(self._offset_cur)
self._offset_cur += snap_obj.data[1].get_tot_elems()
self.snap_objects[self.drawn_count], self.snap_objects[i] = \
self.snap_objects[i], self.snap_objects[self.drawn_count]
self.drawn_count += 1
bgl.glGetIntegerv(bgl.GL_READ_BUFFER, self.buffer_type)
check_error("glGetIntegerv(bgl.GL_READ_BUFFER)")
bgl.glReadBuffer(bgl.GL_COLOR_ATTACHMENT0)
check_error("glReadBuffer(bgl.GL_COLOR_ATTACHMENT0)")
bgl.glReadPixels(
int(self.mval[0]) - self._dist_px,
int(self.mval[1]) - self._dist_px, self.threshold,
self.threshold, bgl.GL_RED_INTEGER, bgl.GL_UNSIGNED_INT,
self._snap_buffer)
check_error("glReadPixels snap_buffer")
snap_obj, index = self._get_nearest_index()
if snap_obj:
ret = self._get_loc(snap_obj, index)
# print(ret, index)
# self.as_image(0, 0, self._offscreen.width, self._offscreen.height, "full_screen")
if DEBUG_SNAP_BUFFER:
self.as_image(
int(self.mval[0]) - self._dist_px,
int(self.mval[1]) - self._dist_px, self.threshold,
self.threshold, "snap_buffer")
# print(ret)
if dither_enabled:
bgl.glEnable(
bgl.GL_DITHER
) # dithering and AA break color coding, so disable #
check_error("glEnable")
if multisample_enabled:
bgl.glEnable(bgl.GL_MULTISAMPLE)
check_error("glEnable")
# print("curve snap %s %.4f" % (len(self.snap_objects), time.time() - t))
return snap_obj, ret