def draw_translucent_fast(self): gl.glEnable(gl.GL_BLEND) gl.glDisable(gl.GL_CULL_FACE) gl.glDepthMask(gl.GL_FALSE) for render_chunk in self.sorted_chunks: render_chunk.draw_translucent(gl.GL_TRIANGLES) gl.glDepthMask(gl.GL_TRUE) gl.glEnable(gl.GL_CULL_FACE) gl.glDisable(gl.GL_BLEND)
def set_state(self):
gl.glTexGeni( gl.GL_S, gl.GL_TEXTURE_GEN_MODE, gl.GL_OBJECT_LINEAR )
gl.glTexGeni( gl.GL_T, gl.GL_TEXTURE_GEN_MODE, gl.GL_OBJECT_LINEAR )
gl.glTexGenfv(gl.GL_S, gl.GL_OBJECT_PLANE, self.plane)
gl.glTexGenfv(gl.GL_T, gl.GL_OBJECT_PLANE, self.plane)
gl.glEnable( gl.GL_TEXTURE_GEN_S )
gl.glEnable( gl.GL_TEXTURE_GEN_T )
gl.glDepthMask( gl.GL_TRUE )
gl.glBindTexture( gl.GL_TEXTURE_2D, self.texture.id )
def _use(self):
"""Internal use that do not change the global active framebuffer"""
if self.ctx.active_framebuffer == self:
return
gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, self._glo)
# NOTE: gl.glDrawBuffer(GL_NONE) if no texture attachments (future)
# NOTE: Default framebuffer currently has this set to None
if self._draw_buffers:
gl.glDrawBuffers(len(self._draw_buffers), self._draw_buffers)
gl.glDepthMask(self._depth_mask)
gl.glViewport(*self._viewport)
def draw_lem (self):
with push_attrib(gl.GL_DEPTH_BUFFER_BIT | gl.GL_LIGHTING_BIT):
gl.glDepthMask(gl.GL_TRUE)
gl.glEnable(gl.GL_DEPTH_TEST)
gl.glEnable(gl.GL_LIGHTING)
gl.glEnable(gl.GL_LIGHT0)
gl.glEnable(gl.GL_NORMALIZE)
gl.glShadeModel(gl.GL_SMOOTH)
gl.glLightModelfv(gl.GL_LIGHT_MODEL_AMBIENT, float_ctype_array(1.0, 1.0, 1.0, 1.0))
gl.glLightfv(gl.GL_LIGHT0, gl.GL_AMBIENT, float_ctype_array(0.0, 0.0, 0.0, 1.0))
gl.glLightfv(gl.GL_LIGHT0, gl.GL_DIFFUSE, float_ctype_array(1.0, 1.0, 1.0, 1.0))
gl.glLightfv(gl.GL_LIGHT0, gl.GL_SPECULAR, float_ctype_array(0.5, 0.5, 0.5, 1.0))
gl.glLightfv(gl.GL_LIGHT0, gl.GL_POSITION, float_ctype_array(1.0, 1.0, 1.0, 0.0))
self.draw_lem_model()
def draw_translucent_fancy(self): gl.glDepthMask(gl.GL_FALSE) gl.glFrontFace(gl.GL_CW) gl.glEnable(gl.GL_BLEND) for render_chunk in self.sorted_chunks: render_chunk.draw_translucent(gl.GL_TRIANGLES) gl.glFrontFace(gl.GL_CCW) for render_chunk in self.sorted_chunks: render_chunk.draw_translucent(gl.GL_TRIANGLES) gl.glDisable(gl.GL_BLEND) gl.glDepthMask(gl.GL_TRUE)
def setBuffer(self, buffer, clear=True):
"""Set the eye buffer to draw to. Subsequent draw calls will be diverted
to the specified eye.
Parameters
----------
buffer : str
Eye buffer to draw to. Values can either be 'left' or 'right'.
clear : bool
Clear the buffer prior to drawing.
"""
# check if the buffer name is valid
if buffer not in ('left', 'right', 'back'):
raise RuntimeError("Invalid buffer name specified.")
# don't change the buffer if same, but allow clearing
if buffer != self.buffer:
if not self._directDraw:
# handle when the back buffer is selected
if buffer == 'back':
if self.useFBO:
GL.glBindFramebuffer(
GL.GL_FRAMEBUFFER,
self._eyeBuffers[buffer]['frameBuffer'])
else:
GL.glBindFramebuffer(GL.GL_FRAMEBUFFER, 0)
else:
GL.glBindFramebuffer(
GL.GL_FRAMEBUFFER, self._eyeBuffers[buffer]['frameBuffer'])
self.viewport = self.scissor = self._bufferViewports[buffer]
GL.glEnable(GL.GL_SCISSOR_TEST)
self.buffer = buffer # set buffer string
if clear:
self.setColor(self.color) # clear the buffer to the window color
GL.glClearDepth(1.0)
GL.glDepthMask(GL.GL_TRUE)
GL.glClear(
GL.GL_COLOR_BUFFER_BIT |
GL.GL_DEPTH_BUFFER_BIT |
GL.GL_STENCIL_BUFFER_BIT)
GL.glDisable(GL.GL_TEXTURE_2D)
GL.glEnable(GL.GL_BLEND)
def draw_lem(self):
with push_attrib(gl.GL_DEPTH_BUFFER_BIT | gl.GL_LIGHTING_BIT):
gl.glDepthMask(gl.GL_TRUE)
gl.glEnable(gl.GL_DEPTH_TEST)
gl.glEnable(gl.GL_LIGHTING)
gl.glEnable(gl.GL_LIGHT0)
gl.glEnable(gl.GL_NORMALIZE)
gl.glShadeModel(gl.GL_SMOOTH)
gl.glLightModelfv(gl.GL_LIGHT_MODEL_AMBIENT,
float_ctype_array(1.0, 1.0, 1.0, 1.0))
gl.glLightfv(gl.GL_LIGHT0, gl.GL_AMBIENT,
float_ctype_array(0.0, 0.0, 0.0, 1.0))
gl.glLightfv(gl.GL_LIGHT0, gl.GL_DIFFUSE,
float_ctype_array(1.0, 1.0, 1.0, 1.0))
gl.glLightfv(gl.GL_LIGHT0, gl.GL_SPECULAR,
float_ctype_array(0.5, 0.5, 0.5, 1.0))
gl.glLightfv(gl.GL_LIGHT0, gl.GL_POSITION,
float_ctype_array(1.0, 1.0, 1.0, 0.0))
self.draw_lem_model()
def on_draw(self):
"""F.on_draw()
Renders the fog."""
gl.glEnable(gl.GL_BLEND)
gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
gl.glDepthMask(gl.GL_FALSE)
x_rep, y_rep, z_rep = self.__config.glass_repetitions()
w, h, d = self.__config.grid_size()
for layer in self.__layers:
with layer:
self.__camera.clear()
self.__camera.add(*self.__cam.gl_matrix())
self.__camera.set()
if not self.__color.filled():
self.__color.add(*self.__config.fog_color())
self.__color.set()
for x_copy in range(x_rep):
for y_copy in range(y_rep):
for z_copy in range(z_rep):
shift = (
w * x_copy,
h * y_copy,
d * z_copy)
self.__copy_shift.clear()
self.__copy_shift.add(*shift)
self.__copy_shift.set()
layer.draw()
gl.glDepthMask(gl.GL_TRUE)
gl.glDisable(gl.GL_BLEND)
def on_draw(self):
gl.glDepthMask(gl.GL_TRUE)
gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT
| gl.GL_STENCIL_BUFFER_BIT)
gl.glDepthMask(gl.GL_FALSE)
with push_matrix(gl.GL_PROJECTION):
self.set_camera_projection()
with push_matrix(gl.GL_MODELVIEW):
gl.glLoadIdentity()
gl.gluLookAt(self.camera_x, self.camera_y, self.camera_z,
self.camera_x, self.camera_y, 0.0, 0.0, 1.0, 0.0)
with push_matrix(gl.GL_MODELVIEW):
gl.gluLookAt(0, 0, 0, 0, -1, 0, 0, 0, -1)
self.draw_ground_plane()
self.target.draw()
# self.shadow.draw()
self.draw_shadow_lem()
self.draw_lem()
with push_attrib(gl.GL_COLOR_BUFFER_BIT
| gl.GL_DEPTH_BUFFER_BIT):
gl.glEnable(gl.GL_BLEND)
gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE)
gl.glEnable(gl.GL_DEPTH_TEST)
with bound_texture(self.puff_texture.target,
self.puff_texture.id):
Thruster.draw(self.particles)
if self.simulator.crashed:
self.crashed.draw()
if self.simulator.landed:
self.landed.draw()
self.fps_display.draw()
def on_draw (self):
gl.glDepthMask(gl.GL_TRUE)
gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT | gl.GL_STENCIL_BUFFER_BIT)
gl.glDepthMask(gl.GL_FALSE)
with push_matrix(gl.GL_PROJECTION):
self.set_camera_projection()
with push_matrix(gl.GL_MODELVIEW):
gl.glLoadIdentity()
gl.gluLookAt (self.camera_x, self.camera_y, self.camera_z,
self.camera_x, self.camera_y, 0.0,
0.0, 1.0, 0.0)
with push_matrix(gl.GL_MODELVIEW):
gl.gluLookAt(0, 0, 0, 0, -1, 0, 0, 0, -1)
self.draw_ground_plane()
self.target.draw()
# self.shadow.draw()
self.draw_shadow_lem()
self.draw_lem()
with push_attrib(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT):
gl.glEnable(gl.GL_BLEND)
gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE)
gl.glEnable(gl.GL_DEPTH_TEST)
with bound_texture (self.puff_texture.target, self.puff_texture.id):
Thruster.draw(self.particles)
if self.simulator.crashed:
self.crashed.draw()
if self.simulator.landed:
self.landed.draw()
self.fps_display.draw()
def render(self, position, chunk_meshes):
gl.glViewport(0, 0, *self.size)
gl.glDisable(gl.GL_BLEND)
gl.glDisable(gl.GL_ALPHA_TEST)
gl.glEnable(gl.GL_CULL_FACE)
gl.glEnable(gl.GL_DEPTH_TEST)
gl.glDepthFunc(gl.GL_LEQUAL)
gl.glDepthMask(gl.GL_TRUE)
x, y, z = position
view_matrices = [
Matrix4.new_scale(-1, -1, 1).rotatey(pi / 2).translate(-x, -y,
-z), # +X
Matrix4.new_scale(-1, -1,
1).rotatey(-pi / 2).translate(-x, -y, -z), # -X
Matrix4.new_rotatex(-pi / 2).translate(-x, -y, -z), # +Y
Matrix4.new_rotatex(pi / 2).translate(-x, -y, -z), # -Y
Matrix4.new_scale(-1, -1, 1).rotatey(pi).translate(-x, -y,
-z), # +Z
Matrix4.new_scale(-1, -1, 1).translate(-x, -y, -z) # -Z
]
model_matrix = Matrix4.new_scale(
1, 1, constants.WALL_TEXTURE_HEIGHT /
(constants.WALL_TEXTURE_WIDTH / sqrt(2) * (sqrt(3))))
gl.glUniformMatrix4fv(1, 1, gl.GL_FALSE, gl_matrix(model_matrix))
with self.program, self.name:
view_matrix = make_view_matrix_persp(position)
gl.glUniformMatrix4fv(0, 1, gl.GL_FALSE, gl_matrix(view_matrix))
for chunk, mesh in chunk_meshes.items():
mesh.draw()
def depth_mask(self, value: bool):
self._depth_mask = value
# Set state if framebuffer is active
if self._ctx.active_framebuffer == self:
gl.glDepthMask(self._depth_mask)
def on_draw(self):
# Prevent trying to draw before things have been set up
if not hasattr(self, "offscreen_buffer"):
return
# Model matrix we'll use to position the main model
suzanne_model_matrix = (Matrix4.new_identity().rotatex(
-math.pi / 2).rotatez(time())) # Rotate over time
plane_model_matrix = Matrix4.new_rotatey(math.pi).translate(0, 0, 2)
# Render to an offscreen buffer
with self.offscreen_buffer, self.view_program, \
enabled(gl.GL_DEPTH_TEST), disabled(gl.GL_CULL_FACE):
gl.glDepthMask(gl.GL_TRUE)
w, h = self.size
aspect = h / w
# Calculate a view frustum; this is basically our camera.
near = 5
far = 15
width = 2
height = 2 * aspect
frustum = (Matrix4.new(near / width, 0, 0, 0, 0, near / height, 0,
0, 0, 0, -(far + near) / (far - near), -1,
0, 0, -2 * far * near / (far - near), 0))
# The view matrix positions the camera in the scene
view_matrix = (Matrix4.new_identity().translate(0, 0, -8))
# Send the matrices to GL
gl.glUniformMatrix4fv(0, 1, gl.GL_FALSE,
gl_matrix(frustum * view_matrix))
gl.glUniformMatrix4fv(1, 1, gl.GL_FALSE,
gl_matrix(suzanne_model_matrix))
gl.glUniform4f(2, 0.3, 0.3, 1,
1) # Set the "color" uniform to blue
self.suzanne.draw()
# We'll also draw a simple plane behind the main model
gl.glUniformMatrix4fv(1, 1, gl.GL_FALSE,
gl_matrix(plane_model_matrix))
gl.glUniform4f(2, 0.3, 1, 0.3,
1) # Set the "color" uniform to green
self.plane.draw(mode=gl.GL_TRIANGLE_STRIP)
# Render shadow buffer
# Basically the same scene as above, but to a different buffer and from a different view
with self.shadow_buffer, self.view_program, enabled(
gl.GL_DEPTH_TEST), disabled(gl.GL_CULL_FACE):
gl.glDepthMask(gl.GL_TRUE)
frustum = Matrix4.new_perspective(1, 1, 1, 12)
view_matrix = (Matrix4.new_identity().translate(
0, 0, -4).rotatey(0.5).rotatex(0.3))
light_pos = (view_matrix.inverse() * Point3(0, 0, 0))
light_view_matrix = frustum * view_matrix
gl.glUniformMatrix4fv(0, 1, gl.GL_FALSE,
gl_matrix(light_view_matrix))
gl.glUniformMatrix4fv(1, 1, gl.GL_FALSE,
gl_matrix(suzanne_model_matrix))
gl.glUniform4f(2, 0.9, 0.3, 0.4, 1)
self.suzanne.draw()
gl.glUniformMatrix4fv(1, 1, gl.GL_FALSE,
gl_matrix(plane_model_matrix))
self.plane.draw(mode=gl.GL_TRIANGLE_STRIP)
# Now draw the offscreen buffer to another buffer, combining it with the
# lighting information to get a nice image.
# Note: This step is pretty pointless here, as we might just draw directly to screen.
# Just demonstrates how to do it.
with self.vao, self.offscreen_buffer2, self.lighting_program, disabled(
gl.GL_CULL_FACE, gl.GL_DEPTH_TEST):
gl.glUniform3f(0, *light_pos)
gl.glUniformMatrix4fv(1, 1, gl.GL_FALSE,
gl_matrix(light_view_matrix))
# Bind some of the offscreen buffer's textures so the shader can read them.
with self.offscreen_buffer["color"], self.offscreen_buffer["normal"], \
self.offscreen_buffer["position"], self.shadow_buffer["depth"]:
gl.glDrawArrays(gl.GL_TRIANGLES, 0, 6)
# Now render the finished image to the screen
with self.vao, self.copy_program, disabled(gl.GL_CULL_FACE,
gl.GL_DEPTH_TEST):
with self.offscreen_buffer2["color"]:
gl.glDrawArrays(gl.GL_TRIANGLES, 0, 6)