def test(self):
a = gl.AbstractShaderProgram()
if magnum.TARGET_GLES2:
vert = gl.Shader(gl.Version.GLES200, gl.Shader.Type.VERTEX)
elif magnum.TARGET_GLES:
vert = gl.Shader(gl.Version.GLES300, gl.Shader.Type.VERTEX)
else:
vert = gl.Shader(gl.Version.GL300, gl.Shader.Type.VERTEX)
if magnum.TARGET_GLES2:
vert.add_source("""
attribute lowp vec4 position;
uniform lowp mat4 transformationProjectionMatrix;
void main() {
gl_Position = transformationProjectionMatrix*position;
}
""".strip())
else:
vert.add_source("""
in lowp vec4 position;
uniform lowp mat4 transformationProjectionMatrix;
void main() {
gl_Position = transformationProjectionMatrix*position;
}
""".strip())
vert.compile()
a.attach_shader(vert)
if magnum.TARGET_GLES2:
frag = gl.Shader(gl.Version.GLES200, gl.Shader.Type.FRAGMENT)
elif magnum.TARGET_GLES:
frag = gl.Shader(gl.Version.GLES300, gl.Shader.Type.FRAGMENT)
else:
frag = gl.Shader(gl.Version.GL300, gl.Shader.Type.FRAGMENT)
if magnum.TARGET_GLES2:
frag.add_source("""
void main() {
gl_FragColor = vec4(0.0);
}
""".strip())
else:
frag.add_source("""
out lowp vec4 color;
void main() {
color = vec4(0.0);
}
""".strip())
frag.compile()
a.attach_shader(frag)
a.bind_attribute_location(0, "position")
a.link()
location = a.uniform_location("transformationProjectionMatrix")
self.assertGreaterEqual(location, 0)
a.set_uniform(location, Matrix4())
def test_uniform_fail(self):
a = gl.AbstractShaderProgram()
with self.assertRaisesRegex(ValueError, "location of uniform 'nonexistent' cannot be retrieved"):
a.uniform_location("nonexistent")
# Asking for uniform on a non-linked program is an error, eat it so the
# setup/teardown checks don't complain
self.assertEqual(gl.Renderer.error, gl.Renderer.Error.INVALID_OPERATION)
if not magnum.TARGET_GLES2:
with self.assertRaisesRegex(ValueError, "index of uniform block 'nonexistent' cannot be retrieved"):
a.uniform_block_index("nonexistent")
def test_link_fail(self):
a = gl.AbstractShaderProgram()
# Link of an empty shader will always fail
with self.assertRaisesRegex(RuntimeError, "linking failed"):
a.link()
