blender/doc/python_api/examples/gpu.5.py
Germano Cavalcante 2ce8b01c59 PyGPU: call 'GPU_shader_bind' in 'GPUShader.uniform_' methods
This simplifies python code.

When we call a method like shader.uniform_float("color", (1,1,1,1)),
we expect the shader's uniform to be updated regardless of whether the
shader is bound or not.

And `batch.draw()` already calls `GPU_shader_bind` inside.

Differential Revision: https://developer.blender.org/D15929
2022-09-19 09:40:20 -03:00

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Python

"""
2D Rectangle
------------
"""
import bpy
import gpu
from gpu_extras.batch import batch_for_shader
vertices = (
(100, 100), (300, 100),
(100, 200), (300, 200))
indices = (
(0, 1, 2), (2, 1, 3))
shader = gpu.shader.from_builtin('2D_UNIFORM_COLOR')
batch = batch_for_shader(shader, 'TRIS', {"pos": vertices}, indices=indices)
def draw():
shader.uniform_float("color", (0, 0.5, 0.5, 1.0))
batch.draw(shader)
bpy.types.SpaceView3D.draw_handler_add(draw, (), 'WINDOW', 'POST_PIXEL')