def draw(self):
""" Draw this list of sprites. """
if self.program is None:
# Used in drawing optimization via OpenGL
self.program = shader.program(vertex_shader=VERTEX_SHADER,
fragment_shader=FRAGMENT_SHADER)
if len(self.sprite_list) == 0:
return
if self.vao is None:
self._calculate_sprite_buffer()
self._texture.use(0)
gl.glEnable(gl.GL_BLEND)
gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
# gl.glTexParameterf(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MIN_FILTER, gl.GL_NEAREST)
# gl.glTexParameterf(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MAG_FILTER, gl.GL_NEAREST)
with self.vao:
self.program['Texture'] = self.texture_id
self.program['Projection'] = get_projection().flatten()
if not self.is_static:
self.sprite_data_buf.write(self.sprite_data.tobytes())
self.vao.render(gl.GL_TRIANGLE_STRIP,
instances=len(self.sprite_list))
if not self.is_static:
self.sprite_data_buf.orphan()
def draw(self):
if len(self.sprite_list) == 0:
return
if self.vao is None:
self.calculate_sprite_buffer()
self.texture.use(0)
gl.glEnable(gl.GL_BLEND)
gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
# gl.glTexParameterf(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MIN_FILTER, gl.GL_NEAREST)
# gl.glTexParameterf(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MAG_FILTER, gl.GL_NEAREST)
with self.vao:
self.program['Texture'] = self.texture_id
self.program['Projection'] = get_projection().flatten()
if self.ambient_light is not None and self.light_list is not None:
light_data = []
for light in self.light_list:
light_data.append(light.x)
light_data.append(light.y)
self.program['point_light'] = light_data
if not self.is_static:
self.sprite_data_buf.write(self.sprite_data.tobytes())
self.vao.render(gl.GL_TRIANGLE_STRIP, instances=len(self.sprite_list))
if not self.is_static:
self.sprite_data_buf.orphan()
def _generic_draw_line_strip(point_list: PointList,
color: Color,
line_width: float=1,
mode: int=moderngl.LINE_STRIP):
"""
Draw a line strip. A line strip is a set of continuously connected
line segments.
Args:
:point_list: List of points making up the line. Each point is
in a list. So it is a list of lists.
:color: color, specified in a list of 3 or 4 bytes in RGB or
RGBA format.
:border_width: Width of the line in pixels.
Returns:
None
Raises:
None
"""
program = shader.program(
vertex_shader=line_vertex_shader,
fragment_shader=line_fragment_shader,
)
buffer_type = np.dtype([('vertex', '2f4'), ('color', '4B')])
data = np.zeros(len(point_list), dtype=buffer_type)
data['vertex'] = point_list
color = get_four_byte_color(color)
data['color'] = color
vbo = shader.buffer(data.tobytes())
vbo_desc = shader.BufferDescription(
vbo,
'2f 4B',
('in_vert', 'in_color'),
normalized=['in_color']
)
vao_content = [vbo_desc]
vao = shader.vertex_array(program, vao_content)
with vao:
program['Projection'] = get_projection().flatten()
gl.glLineWidth(line_width)
gl.glPointSize(line_width)
gl.glEnable(gl.GL_BLEND)
gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
gl.glEnable(gl.GL_LINE_SMOOTH)
gl.glHint(gl.GL_LINE_SMOOTH_HINT, gl.GL_NICEST)
gl.glHint(gl.GL_POLYGON_SMOOTH_HINT, gl.GL_NICEST)
vao.render(mode=mode)
def _generic_draw_line_strip(point_list: PointList,
color: Color,
mode: int = gl.GL_LINE_STRIP):
"""
Draw a line strip. A line strip is a set of continuously connected
line segments.
:param point_list: List of points making up the line. Each point is
in a list. So it is a list of lists.
:param Color color: color, specified in a list of 3 or 4 bytes in RGB or
RGBA format.
"""
program = shader.program(
vertex_shader=line_vertex_shader,
fragment_shader=line_fragment_shader,
)
buffer_type = np.dtype([('vertex', '2f4'), ('color', '4B')])
data = np.zeros(len(point_list), dtype=buffer_type)
data['vertex'] = point_list
color = get_four_byte_color(color)
data['color'] = color
vbo = shader.buffer(data.tobytes())
vbo_desc = shader.BufferDescription(
vbo,
'2f 4B',
('in_vert', 'in_color'),
normalized=['in_color']
)
vao_content = [vbo_desc]
vao = shader.vertex_array(program, vao_content)
with vao:
program['Projection'] = get_projection().flatten()
vao.render(mode=mode)
