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import pytest
import OpenGL
OpenGL.ERROR_CHECKING = False # Don't want PyOpenGL to raise any exceptions
from OpenGL import GL
def test_create_destroy(ctx_new):
"""Create and destroy a context"""
# Context will destroy itself on exit
pass
def test_core_profile_check(ctx):
ctx.core_profile_check()
def test_detect_framebuffer(ctx):
# find a randomly active framebuffer.
# We just test the call for now
ctx.detect_framebuffer()
def test_extensions(ctx_new):
# self.assertTrue("GL_ARB_vertex_array_object" in ctx.extensions)
# self.assertTrue("GL_ARB_transform_feedback2" in ctx.extensions)
# self.assertTrue("GL_ARB_shader_subroutine" in ctx.extensions)
ctx = ctx_new
assert isinstance(ctx.extensions, set)
assert len(ctx.extensions) > 0
def test_clear_errors(ctx_new):
ctx = ctx_new
# Reading the error state should reset it, as with glGetError
ctx.enable_direct(1) # Not a valid glEnable value
assert ctx.error == "GL_INVALID_ENUM"
assert ctx.error == "GL_NO_ERROR" # calling glGetError resets the error state
# Clearing the error state should reset it
ctx.enable_direct(1)
ctx.clear_errors()
assert ctx.error == "GL_NO_ERROR"
# Ensure PyOpenGL can see errors originating from moderngl
ctx.enable_direct(1)
assert GL.glGetError() == GL.GL_INVALID_ENUM
# Ensure moderngl can see errors originating from PyOpenGL
GL.glEnable(1)
assert ctx.error == "GL_INVALID_ENUM"
# Clearing errors originating from moderngl so PyOpenGL doesn't break
ctx.enable_direct(1)
ctx.clear_errors()
assert GL.glGetError() == GL.GL_NO_ERROR
# Clearing errors originating from PyOpenGL so moderngl doesn't break
GL.glEnable(1)
ctx.clear_errors()
assert ctx.error == "GL_NO_ERROR"
def test_attributes(ctx_new):
"""Ensure enums are present in the context instance"""
ctx = ctx_new
# Flags
assert isinstance(ctx.NOTHING, int)
assert isinstance(ctx.BLEND, int)
assert isinstance(ctx.DEPTH_TEST, int)
assert isinstance(ctx.CULL_FACE, int)
assert isinstance(ctx.RASTERIZER_DISCARD, int)
assert isinstance(ctx.PROGRAM_POINT_SIZE, int)
# Primitive modes
assert isinstance(ctx.POINTS, int)
assert isinstance(ctx.LINES, int)
assert isinstance(ctx.LINE_LOOP, int)
assert isinstance(ctx.LINE_STRIP, int)
assert isinstance(ctx.TRIANGLES, int)
assert isinstance(ctx.TRIANGLE_STRIP, int)
assert isinstance(ctx.TRIANGLE_FAN, int)
assert isinstance(ctx.LINES_ADJACENCY, int)
assert isinstance(ctx.LINE_STRIP_ADJACENCY, int)
assert isinstance(ctx.TRIANGLES_ADJACENCY, int)
assert isinstance(ctx.TRIANGLE_STRIP_ADJACENCY, int)
assert isinstance(ctx.PATCHES, int)
# Texture filters
assert isinstance(ctx.LINEAR, int)
assert isinstance(ctx.NEAREST, int)
assert isinstance(ctx.NEAREST_MIPMAP_NEAREST, int)
assert isinstance(ctx.LINEAR_MIPMAP_LINEAR, int)
assert isinstance(ctx.LINEAR_MIPMAP_NEAREST, int)
assert isinstance(ctx.NEAREST_MIPMAP_LINEAR, int)
# Blend functions
assert isinstance(ctx.ZERO, int)
assert isinstance(ctx.ONE, int)
assert isinstance(ctx.SRC_COLOR, int)
assert isinstance(ctx.ONE_MINUS_SRC_COLOR, int)
assert isinstance(ctx.SRC_ALPHA, int)
assert isinstance(ctx.ONE_MINUS_SRC_ALPHA, int)
assert isinstance(ctx.DST_ALPHA, int)
assert isinstance(ctx.ONE_MINUS_DST_ALPHA, int)
assert isinstance(ctx.DST_COLOR, int)
assert isinstance(ctx.ONE_MINUS_DST_COLOR, int)
# Blend shortcuts
assert isinstance(ctx.DEFAULT_BLENDING, tuple)
assert isinstance(ctx.ADDITIVE_BLENDING, tuple)
assert isinstance(ctx.PREMULTIPLIED_ALPHA, tuple)
# Blend equations
assert isinstance(ctx.FUNC_ADD, int)
assert isinstance(ctx.FUNC_SUBTRACT, int)
assert isinstance(ctx.FUNC_REVERSE_SUBTRACT, int)
assert isinstance(ctx.MIN, int)
assert isinstance(ctx.MAX, int)
# Provoking vertex
assert isinstance(ctx.FIRST_VERTEX_CONVENTION, int)
assert isinstance(ctx.LAST_VERTEX_CONVENTION, int)
assert ctx == ctx
assert ctx.line_width == 1.0
assert ctx.point_size == 1.0
assert isinstance(ctx.max_integer_samples, int)
assert isinstance(ctx.max_texture_units, int)
assert ctx.default_texture_unit == ctx.max_texture_units - 1
assert ctx.screen is None
assert ctx.wireframe is False
assert ctx.front_face == "ccw"
assert ctx.cull_face == "front_and_back"
assert ctx.patch_vertices == 3
ctx.enable(ctx.NOTHING)
ctx.disable(ctx.NOTHING)
ctx.finish()
def test_enable_direct(ctx_new):
# We already support this, but it's a safe value
ctx = ctx_new
GL_PROGRAM_POINT_SIZE = 0x8642
ctx.enable_direct(GL_PROGRAM_POINT_SIZE)
assert ctx.error == "GL_NO_ERROR"
ctx.disable_direct(GL_PROGRAM_POINT_SIZE)
assert ctx.error == "GL_NO_ERROR"
def test_depth_clamp_range(ctx):
ctx.depth_clamp_range = 0, 1
assert ctx.error == "GL_NO_ERROR"
ctx.depth_clamp_range = None
assert ctx.error == "GL_NO_ERROR"
def test_info(ctx):
assert isinstance(ctx.info, dict)
assert len(ctx.info) > 50
assert ctx.info["GL_MAX_GEOMETRY_OUTPUT_VERTICES"] >= 256
def test_polygon_offset(ctx):
ctx.polygon_offset = 0.0, 1.0
assert ctx.polygon_offset == (0.0, 1.0)
ctx.polygon_offset = 1.0, 0.0
assert ctx.polygon_offset == (1.0, 0.0)
ctx.polygon_offset = -1.0, -1.0
assert ctx.polygon_offset == (-1.0, -1.0)
def test_context_gc_modes(ctx_new):
"""Check gc mode default and set different modes"""
ctx = ctx_new
# gc mode should be None by default
assert ctx.gc_mode is None
ctx.gc_mode = None
ctx.gc_mode = "context_gc"
ctx.gc_mode = "auto"
with pytest.raises(ValueError):
ctx.gc_mode = "something"
def test_context_gc(ctx_new):
"""Simple usage of context_gc"""
ctx = ctx_new
ctx.gc_mode = "context_gc"
# Buffer
buff = ctx.buffer(reserve=1024)
buff = None
assert ctx.gc() == 1
# Texture
tex = ctx.texture((10, 10), 4)
tex = None
assert ctx.gc() == 1
# Texture Array
tex_array = ctx.texture_array((10, 10, 10), 4)
tex_array = None
assert ctx.gc() == 1
# Texture cube
tex_cube = ctx.texture_cube((10, 10), 4)
tex_cube = None
assert ctx.gc() == 1
# Texture3D
tex_3d = ctx.texture3d((10, 10, 10), 4)
tex_3d = None
assert ctx.gc() == 1
# Sampler
sampler = ctx.sampler()
sampler = None
assert ctx.gc() == 1
# Renderbuffer
rb = ctx.renderbuffer((10, 19))
rb = None
assert ctx.gc() == 1
# Program
prog = ctx.program(
vertex_shader="""
#version 330
out float value;
void main() {
value = float(gl_VertexID);
}
"""
)
prog = None
assert ctx.gc() == 1
# Framebuffer
fbo = ctx.framebuffer(
color_attachments=[ctx.texture((10, 10), 4)],
depth_attachment=ctx.depth_texture((10, 10))
)
fbo = None
assert ctx.gc() == 3
# # Compute Shader
# cs = ctx.compute_shader(
# """
# #version 450
# layout(local_size_x=4, local_size_y=4) in;
# layout(rgba8, binding=0) uniform imageCube img_in;
# layout(rgba8, binding=1) uniform imageCube img_out;
# void main() {
# for (int i = 0; i < 6; i++) {
# vec4 fragment = imageLoad(img_in, ivec3(gl_LocalInvocationID.xy, i));
# imageStore(img_out, ivec3(gl_LocalInvocationID.xy, i), fragment);
# }
# }
# """
# )
# cs = None
# self.assertEqual(ctx.gc(), 1)
# # --- Too complex to test right now
# # def test_context_switch(self):
# # """Ensure context switching is working"""
# # ctx1 = moderngl.create_context(standalone=True)
# # ctx2 = moderngl.create_context(standalone=True)
# # with ctx1 as ctx:
# # buffer1 = ctx.buffer(reserve=1024)
# # with ctx2 as ctx:
# # buffer2 = ctx.buffer(reserve=1024)
# # self.assertEqual(buffer1.glo, buffer2.glo)
# # ctx1.release()
# # ctx2.release()
# # def test_exit(self):
# # """Ensure the previous context was activated on exit"""
# # ctx1 = moderngl.create_context(standalone=True)
# # ctx2 = moderngl.create_context(standalone=True)
# # with ctx1 as ctx:
# # ctx.buffer(reserve=1024)
# # # Will error out if no context is active "moderngl.Error: cannot create buffer"
# # ctx1.buffer(reserve=1024)
# # ctx1.release()
# # ctx2.release()
# # def test_share(self):
# # """Create resources with shared context"""
# # if platform.system().lower() in ["darwin", "linux"]:
# # self.skipTest('Context sharing not supported on darwin')
# # data1 = numpy.array([1, 2, 3, 4], dtype='u1')
# # data2 = numpy.array([4, 3, 2, 1], dtype='u1')
# # ctx1 = moderngl.create_context(standalone=True)
# # ctx2 = moderngl.create_context(standalone=True, share=True)
# # with ctx1 as ctx:
# # b1 = ctx.buffer(data=data1)
# # with ctx2 as ctx:
# # b2 = ctx.buffer(data=data2)
# # # Because the resources are shared the name should increment
# # self.assertEqual(b1.glo, 1)
# # self.assertEqual(b2.glo, 2)
# # # Ensure we can read the same buffer data in both contexts
# # with ctx1:
# # self.assertEqual(b1.read(), b'\x01\x02\x03\x04')
# # self.assertEqual(b2.read(), b'\x04\x03\x02\x01')
# # with ctx2:
# # self.assertEqual(b1.read(), b'\x01\x02\x03\x04')
# # self.assertEqual(b2.read(), b'\x04\x03\x02\x01')
# # ctx1.release()
# # ctx2.release()
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