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#!/usr/bin/python
# Copyright 2016 The ANGLE Project Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
#
# gen_copy_conversion_table.py:
# Code generation for ES3 valid copy conversions table format map.
from datetime import date
import sys
sys.path.append('renderer')
import angle_format
template_cpp = """// GENERATED FILE - DO NOT EDIT.
// Generated by {script_name} using data from {data_source_name}.
//
// Copyright {copyright_year} The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// format_map:
// Determining the sized internal format from a (format,type) pair.
// Also check es3 format combinations for validity.
#include "angle_gl.h"
#include "common/debug.h"
namespace gl
{{
bool ValidES3CopyConversion(GLenum textureFormat, GLenum framebufferFormat)
{{
switch (textureFormat)
{{
{texture_format_cases} default:
break;
}}
return false;
}}
}} // namespace gl
"""
template_format_case = """ case {texture_format}:
switch (framebufferFormat)
{{
{framebuffer_format_cases} return true;
default:
break;
}}
break;
"""
template_simple_case = """ case {key}:
"""
def parse_texture_format_case(texture_format, framebuffer_formats):
framebuffer_format_cases = ""
for framebuffer_format in sorted(framebuffer_formats):
framebuffer_format_cases += template_simple_case.format(key = framebuffer_format)
return template_format_case.format(
texture_format = texture_format, framebuffer_format_cases = framebuffer_format_cases)
data_source_name = 'es3_copy_conversion_formats.json'
json_data = angle_format.load_json(data_source_name)
format_map = {}
for description, data in json_data.iteritems():
for texture_format, framebuffer_format in data:
if texture_format not in format_map:
format_map[texture_format] = []
format_map[texture_format] += [ framebuffer_format ]
texture_format_cases = ""
for texture_format, framebuffer_formats in sorted(format_map.iteritems()):
texture_format_cases += parse_texture_format_case(texture_format, framebuffer_formats)
with open('es3_copy_conversion_table_autogen.cpp', 'wt') as out_file:
output_cpp = template_cpp.format(
script_name = sys.argv[0],
data_source_name = data_source_name,
copyright_year = date.today().year,
texture_format_cases = texture_format_cases)
out_file.write(output_cpp)
out_file.close()
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