def draw_image( # noqa: WPS210, WPS211
x: float, # noqa: WPS111
y: float, # noqa: WPS111
width: float,
height: float,
image: bpy.types.Image,
transparency: float,
crop: Color = (0, 0, 1, 1),
) -> None:
"""Draw a image on the screen.
Parameters:
x: Bottom-left x-coordinate
y: Bottom-left y-coordinate
width: Width of the image
height: Height of the image
image: Image to be drawn
transparency: Image transparency
crop: Tuple describing how the image should be cropped
Raises:
Exception: Failed to load into an OpenGL texture
"""
coords = [
(x, y),
(x + width, y),
(x, y + height),
(x + width, y + height),
]
uvs = [
(crop[0], crop[1]),
(crop[2], crop[1]),
(crop[0], crop[3]),
(crop[2], crop[3]),
]
indices = [(0, 1, 2), (2, 1, 3)]
shader = gpu.shader.from_builtin('2D_IMAGE')
batch = batch_for_shader(shader,
'TRIS', {
'pos': coords,
'texCoord': uvs
},
indices=indices)
# send image to gpu if it isn't there already
if image.gl_load():
raise Exception()
# texture identifier on gpu
texture_id = image.bindcode
# in case someone disabled it before
bgl.glEnable(bgl.GL_BLEND)
# bind texture to image unit 0
bgl.glActiveTexture(bgl.GL_TEXTURE0)
bgl.glBindTexture(bgl.GL_TEXTURE_2D, texture_id)
shader.bind()
# tell shader to use the image that is bound to image unit 0
shader.uniform_int('image', 0)
batch.draw(shader)
bgl.glDisable(bgl.GL_TEXTURE_2D)
def load_texture(texture: bpy.types.Image) -> int:
"""Load the texture, return OpenGL error code."""
return texture.gl_load()
def load_texture(texture: bpy.types.Image) -> int:
"""Load the texture, return OpenGL error code."""
return texture.gl_load(filter=bgl.GL_NEAREST, mag=bgl.GL_NEAREST)