mirror of
https://github.com/encounter/dawn-cmake.git
synced 2025-06-06 22:53:35 +00:00
df69f24824
This makes the OpenGL entry points loaded at Adapter creation from the getProcAddress passed in the DiscoveryOptions and update all GL calls in the backend to go through the new OpenGLFunctions object. A code generator is added that generates the function loader and list of GL procs from Khronos' gl.xml file but we can't get rid of glad yet because it is used to have the PROC typedefs and enum values. BUG=dawn:165 Change-Id: I2a583d79752f55877fa4190846f5be16cf91651a Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/7983 Commit-Queue: Corentin Wallez <cwallez@chromium.org> Reviewed-by: Austin Eng <enga@chromium.org>
118 lines
4.3 KiB
Python
118 lines
4.3 KiB
Python
#!/usr/bin/env python2
|
|
# Copyright 2019 The Dawn Authors
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
import os, sys
|
|
from collections import namedtuple
|
|
import xml.etree.ElementTree as etree
|
|
|
|
from generator_lib import Generator, run_generator, FileRender
|
|
|
|
class Proc:
|
|
def __init__(self, gl_name, proc_name=None):
|
|
assert(gl_name.startswith('gl'))
|
|
if proc_name == None:
|
|
proc_name = gl_name[2:]
|
|
|
|
self.gl_name = gl_name
|
|
self.proc_name = proc_name
|
|
|
|
def glProcName(self):
|
|
return self.gl_name
|
|
|
|
def ProcName(self):
|
|
return self.proc_name
|
|
|
|
def PFNPROCNAME(self):
|
|
return 'PFN' + self.gl_name.upper() + 'PROC'
|
|
|
|
def __repr__(self):
|
|
return 'Proc("{}", "{}")'.format(self.gl_name, self.proc_name)
|
|
|
|
Version = namedtuple('Version', ['major', 'minor'])
|
|
VersionProcBlock = namedtuple('ProcBlock', ['version', 'procs'])
|
|
HeaderProcBlock = namedtuple('ProcBlock', ['description', 'procs'])
|
|
|
|
def parse_version(version):
|
|
return Version(*map(int, version.split('.')))
|
|
|
|
def compute_params(root):
|
|
# Add proc blocks for OpenGL ES
|
|
gles_blocks = []
|
|
for gles_section in root.findall('''feature[@api='gles2']'''):
|
|
section_procs = []
|
|
for proc in gles_section.findall('./require/command'):
|
|
section_procs.append(Proc(proc.attrib['name']))
|
|
gles_blocks.append(VersionProcBlock(parse_version(gles_section.attrib['number']), section_procs))
|
|
|
|
# Get the list of all Desktop OpenGL function removed by the Core Profile.
|
|
core_removed_procs = set()
|
|
for removed_section in root.findall('feature/remove'):
|
|
assert(removed_section.attrib['profile'] == 'core')
|
|
for proc in removed_section.findall('./command'):
|
|
core_removed_procs.add(proc.attrib['name'])
|
|
|
|
# Add proc blocks for Desktop GL
|
|
desktop_gl_blocks = []
|
|
for gl_section in root.findall('''feature[@api='gl']'''):
|
|
section_procs = []
|
|
for proc in gl_section.findall('./require/command'):
|
|
if proc.attrib['name'] not in core_removed_procs:
|
|
section_procs.append(Proc(proc.attrib['name']))
|
|
desktop_gl_blocks.append(VersionProcBlock(parse_version(gl_section.attrib['number']), section_procs))
|
|
|
|
already_added_header_procs = set()
|
|
header_blocks = []
|
|
def add_header_block(description, procs):
|
|
block_procs = []
|
|
for proc in procs:
|
|
if not proc.glProcName() in already_added_header_procs:
|
|
already_added_header_procs.add(proc.glProcName())
|
|
block_procs.append(proc)
|
|
if len(block_procs) > 0:
|
|
header_blocks.append(HeaderProcBlock(description, block_procs))
|
|
|
|
for block in gles_blocks:
|
|
add_header_block('OpenGL ES {}.{}'.format(block.version.major, block.version.minor), block.procs)
|
|
|
|
for block in desktop_gl_blocks:
|
|
add_header_block('Desktop OpenGL {}.{}'.format(block.version.major, block.version.minor), block.procs)
|
|
|
|
return {
|
|
'gles_blocks': gles_blocks,
|
|
'desktop_gl_blocks': desktop_gl_blocks,
|
|
'header_blocks': header_blocks,
|
|
}
|
|
|
|
class OpenGLLoaderGenerator(Generator):
|
|
def get_description(self):
|
|
return 'Generates code to load OpenGL function pointers'
|
|
|
|
def add_commandline_arguments(self, parser):
|
|
parser.add_argument('--gl-xml', required=True, type=str, help ='The Khronos gl.xml to use.')
|
|
|
|
def get_file_renders(self, args):
|
|
params = compute_params(etree.parse(args.gl_xml).getroot())
|
|
|
|
return [
|
|
FileRender('opengl/OpenGLFunctionsBase.cpp', 'dawn_native/opengl/OpenGLFunctionsBase_autogen.cpp', [params]),
|
|
FileRender('opengl/OpenGLFunctionsBase.h', 'dawn_native/opengl/OpenGLFunctionsBase_autogen.h', [params]),
|
|
]
|
|
|
|
def get_dependencies(self, args):
|
|
return [os.path.abspath(args.gl_xml)]
|
|
|
|
if __name__ == '__main__':
|
|
sys.exit(run_generator(OpenGLLoaderGenerator()))
|