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# coding=utf-8
#
# Copyright © 2012 Intel Corporation
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice (including the next
# paragraph) shall be included in all copies or substantial portions of the
# Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
import os
class Test(object):
def __init__(self, type_name, op, usage, shader_target):
self.type_name = type_name
self.op = op
self.usage = usage
self.shader_target = shader_target
def filename(self):
if self.op == "++t":
name_base = "preincrement"
elif self.op == "--t":
name_base = "predecrement"
elif self.op == "t++":
name_base = "postincrement"
elif self.op == "t--":
name_base = "postdecrement"
return os.path.join('spec',
'glsl-1.10',
'compiler',
'expressions',
'{0}-{1}-non-lvalue-for-{2}.{3}'.format(
name_base, self.type_name, self.usage,
self.shader_target))
def generate(self):
if self.usage == 'assignment':
test = """/* [config]
* expect_result: fail
* glsl_version: 1.10
* [end config]
*
* Page 32 (page 38 of the PDF) of the GLSL 1.10 spec says:
*
* "Variables that are built-in types, entire structures, structure
* fields, l-values with the field selector ( . ) applied to select
* components or swizzles without repeated fields, and l-values
* dereferenced with the array subscript operator ( [ ] ) are all
* l-values. Other binary or unary expressions, non-dereferenced arrays,
* function names, swizzles with repeated fields, and constants cannot be
* l-values. The ternary operator (?:) is also not allowed as an
* l-value."
*/
uniform {self.type_name} u;
{mode} vec4 v;
void main()
{{
{self.type_name} t = u;
{self.op} = {self.type_name}(v{components});
{dest} = {var_as_vec4};
}}
"""
else:
test = """/* [config]
* expect_result: fail
* glsl_version: 1.10
* [end config]
*
* Page 32 (page 38 of the PDF) of the GLSL 1.10 spec says:
*
* "Variables that are built-in types, entire structures, structure
* fields, l-values with the field selector ( . ) applied to select
* components or swizzles without repeated fields, and l-values
* dereferenced with the array subscript operator ( [ ] ) are all
* l-values. Other binary or unary expressions, non-dereferenced arrays,
* function names, swizzles with repeated fields, and constants cannot be
* l-values. The ternary operator (?:) is also not allowed as an
* l-value."
*/
uniform {self.type_name} u;
{mode} vec4 v;
void f(out {self.type_name} p)
{{
p = {self.type_name}(v{components});
}}
void main()
{{
{self.type_name} t = u;
f({self.op});
{dest} = {var_as_vec4};
}}
"""
if '2' in self.type_name:
var_as_vec4 = 'vec4(t.xyxy)'
components = '.xy'
elif '3' in self.type_name:
var_as_vec4 = 'vec4(t.xyzx)'
components = '.xyz'
elif '4' in self.type_name:
var_as_vec4 = 'vec4(t)'
components = ''
else:
var_as_vec4 = 'vec4(t)'
components = '.x'
if self.shader_target == 'vert':
dest = "gl_Position"
mode = 'attribute'
else:
mode = 'varying'
dest = "gl_FragColor"
test = test.format(self = self,
components = components,
dest = dest,
var_as_vec4 = var_as_vec4,
mode = mode)
filename = self.filename()
dirname = os.path.dirname(filename)
if not os.path.exists(dirname):
os.makedirs(dirname)
with open(filename, 'w') as f:
f.write(test)
def all_tests():
for type_name in ['float', 'vec2', 'vec3', 'vec4',
'int', 'ivec2', 'ivec3', 'ivec4']:
for op in ["++t", "--t", "t++", "t--"]:
for usage in ['assignment', 'out-parameter']:
for shader_target in ['vert', 'frag']:
yield Test(type_name, op, usage, shader_target)
def main():
for test in all_tests():
test.generate()
print test.filename()
if __name__ == '__main__':
main()
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