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# -*- coding: utf-8 -*-
from vispy.testing import run_tests_if_main, assert_raises
from vispy import gloo
from vispy.gloo import FrameBuffer, RenderBuffer
def test_renderbuffer():
# Set with no args
assert_raises(ValueError, RenderBuffer)
# Set shape only
R = RenderBuffer((10, 20))
assert R.shape == (10, 20)
assert R.format is None
# Set both shape and format
R = RenderBuffer((10, 20), 'color')
assert R.shape == (10, 20)
assert R.format == 'color'
#
glir_cmds = R._glir.clear()
assert len(glir_cmds) == 2
assert glir_cmds[0][0] == 'CREATE'
assert glir_cmds[1][0] == 'SIZE'
# Orther formats
assert RenderBuffer((10, 20), 'depth').format == 'depth'
assert RenderBuffer((10, 20), 'stencil').format == 'stencil'
# Test reset size and format
R.resize((9, 9), 'depth')
assert R.shape == (9, 9)
assert R.format == 'depth'
R.resize((8, 8), 'stencil')
assert R.shape == (8, 8)
assert R.format == 'stencil'
# Wrong formats
assert_raises(ValueError, R.resize, (9, 9), 'no_format')
assert_raises(ValueError, R.resize, (9, 9), [])
# Resizable
R = RenderBuffer((10, 20), 'color', False)
assert_raises(RuntimeError, R.resize, (9, 9), 'color')
# Attaching sets the format
F = FrameBuffer()
#
R = RenderBuffer((9, 9))
F.color_buffer = R
assert F.color_buffer is R
assert R.format == 'color'
#
F.depth_buffer = RenderBuffer((9, 9))
assert F.depth_buffer.format == 'depth'
#
F.stencil_buffer = RenderBuffer((9, 9))
assert F.stencil_buffer.format == 'stencil'
def test_framebuffer():
# Test init with no args
F = FrameBuffer()
glir_cmds = F._glir.clear()
assert len(glir_cmds) == 1
glir_cmds[0][0] == 'CREATE'
# Activate / deactivate
F.activate()
glir_cmd = F._glir.clear()[-1]
assert glir_cmd[0] == 'FRAMEBUFFER'
assert glir_cmd[2] is True
#
F.deactivate()
glir_cmd = F._glir.clear()[-1]
assert glir_cmd[0] == 'FRAMEBUFFER'
assert glir_cmd[2] is False
#
with F:
pass
glir_cmds = F._glir.clear()
assert len(glir_cmds) == 2
assert glir_cmds[0][0] == 'FRAMEBUFFER'
assert glir_cmds[1][0] == 'FRAMEBUFFER'
assert glir_cmds[0][2] is True and glir_cmds[1][2] is False
# Init with args
R = RenderBuffer((3, 3))
F = FrameBuffer(R)
assert F.color_buffer is R
#
R2 = RenderBuffer((3, 3))
F.color_buffer = R2
assert F.color_buffer is R2
# Wrong buffers
F = FrameBuffer()
assert_raises(TypeError, FrameBuffer.color_buffer.fset, F, 'FOO')
assert_raises(TypeError, FrameBuffer.color_buffer.fset, F, [])
assert_raises(TypeError, FrameBuffer.depth_buffer.fset, F, 'FOO')
assert_raises(TypeError, FrameBuffer.stencil_buffer.fset, F, 'FOO')
color_buffer = RenderBuffer((9, 9), 'color')
assert_raises(ValueError, FrameBuffer.depth_buffer.fset, F, color_buffer)
# But None is allowed!
F.color_buffer = None
# Shape
R1 = RenderBuffer((3, 3))
R2 = RenderBuffer((3, 3))
R3 = RenderBuffer((3, 3))
F = FrameBuffer(R1, R2, R3)
assert F.shape == R1.shape
assert R1.format == 'color'
assert R2.format == 'depth'
assert R3.format == 'stencil'
# Resize
F.resize((10, 10))
assert F.shape == (10, 10)
assert F.shape == R1.shape
assert F.shape == R2.shape
assert F.shape == R3.shape
assert R1.format == 'color'
assert R2.format == 'depth'
assert R3.format == 'stencil'
# Shape from any buffer
F.color_buffer = None
assert F.shape == (10, 10)
F.depth_buffer = None
assert F.shape == (10, 10)
F.stencil_buffer = None
assert_raises(RuntimeError, FrameBuffer.shape.fget, F)
# Also with Texture luminance
T = gloo.Texture2D((20, 30))
R = RenderBuffer(T.shape)
assert T.format == 'luminance'
F = FrameBuffer(T, R)
assert F.shape == T.shape[:2]
assert F.shape == R.shape
assert T.format == 'luminance'
assert R.format == 'depth'
# Resize
F.resize((10, 10))
assert F.shape == (10, 10)
assert T.shape == (10, 10, 1)
assert F.shape == R.shape
assert T.format == 'luminance'
assert R.format == 'depth'
# Also with Texture RGB
T = gloo.Texture2D((20, 30, 3))
R = RenderBuffer(T.shape)
assert T.format == 'rgb'
F = FrameBuffer(T, R)
assert F.shape == T.shape[:2]
assert F.shape == R.shape
assert T.format == 'rgb'
assert R.format == 'depth'
# Resize
F.resize((10, 10))
assert F.shape == (10, 10)
assert T.shape == (10, 10, 3)
assert F.shape == R.shape
assert T.format == 'rgb'
assert R.format == 'depth'
# Also with Texture for depth
T1 = gloo.Texture2D((20, 30, 3))
T2 = gloo.Texture2D((20, 30, 1))
assert T1.format == 'rgb'
assert T2.format == 'luminance'
F = FrameBuffer(T1, T2)
assert F.shape == T1.shape[:2]
assert F.shape == T2.shape[:2]
assert T1.format == 'rgb'
assert T2.format == 'luminance'
# Resize
F.resize((10, 10))
assert F.shape == (10, 10)
assert T1.shape == (10, 10, 3)
assert T2.shape == (10, 10, 1)
assert T1.format == 'rgb'
assert T2.format == 'luminance'
# Wrong shape in resize
assert_raises(ValueError, F. resize, (9, 9, 1))
assert_raises(ValueError, F. resize, (9,))
assert_raises(ValueError, F. resize, 'FOO')
run_tests_if_main()
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