mirror of
https://github.com/KhronosGroup/SPIRV-Cross.git
synced 2024-11-16 00:40:08 +00:00
238 lines
8.5 KiB
Python
Executable File
238 lines
8.5 KiB
Python
Executable File
#!/usr/bin/env python3
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import sys
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import os
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import subprocess
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import tempfile
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import re
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import itertools
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import hashlib
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import shutil
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import argparse
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def parse_stats(stats):
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m = re.search('([0-9]+) work registers', stats)
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registers = int(m.group(1)) if m else 0
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m = re.search('([0-9]+) uniform registers', stats)
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uniform_regs = int(m.group(1)) if m else 0
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m_list = re.findall('(-?[0-9]+)\s+(-?[0-9]+)\s+(-?[0-9]+)', stats)
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alu_short = float(m_list[1][0]) if m_list else 0
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ls_short = float(m_list[1][1]) if m_list else 0
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tex_short = float(m_list[1][2]) if m_list else 0
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alu_long = float(m_list[2][0]) if m_list else 0
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ls_long = float(m_list[2][1]) if m_list else 0
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tex_long = float(m_list[2][2]) if m_list else 0
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return (registers, uniform_regs, alu_short, ls_short, tex_short, alu_long, ls_long, tex_long)
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def get_shader_type(shader):
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_, ext = os.path.splitext(shader)
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if ext == '.vert':
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return '--vertex'
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elif ext == '.frag':
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return '--fragment'
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elif ext == '.comp':
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return '--compute'
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elif ext == '.tesc':
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return '--tessellation_control'
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elif ext == '.tese':
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return '--tessellation_evaluation'
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elif ext == '.geom':
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return '--geometry'
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else:
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return ''
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def get_shader_stats(shader):
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f, path = tempfile.mkstemp()
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os.close(f)
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p = subprocess.Popen(['malisc', get_shader_type(shader), '--core', 'Mali-T760', '-V', shader], stdout = subprocess.PIPE, stderr = subprocess.PIPE)
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stdout, stderr = p.communicate()
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os.remove(path)
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if p.returncode != 0:
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print(stderr.decode('utf-8'))
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raise OSError('malisc failed')
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p.wait()
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returned = stdout.decode('utf-8')
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return parse_stats(returned)
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def validate_shader(shader, vulkan):
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if vulkan:
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subprocess.check_call(['glslangValidator', '-V', shader])
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else:
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subprocess.check_call(['glslangValidator', shader])
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def cross_compile(shader, vulkan, spirv, eliminate, invalid_spirv):
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spirv_f, spirv_path = tempfile.mkstemp()
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glsl_f, glsl_path = tempfile.mkstemp(suffix = os.path.basename(shader))
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os.close(spirv_f)
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os.close(glsl_f)
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if vulkan or spirv:
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vulkan_glsl_f, vulkan_glsl_path = tempfile.mkstemp(suffix = os.path.basename(shader))
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os.close(vulkan_glsl_f)
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if spirv:
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subprocess.check_call(['spirv-as', '-o', spirv_path, shader])
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else:
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subprocess.check_call(['glslangValidator', '-V', '-o', spirv_path, shader])
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if not invalid_spirv:
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subprocess.check_call(['spirv-val', spirv_path])
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spirv_cross_path = './spirv-cross'
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if eliminate:
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subprocess.check_call([spirv_cross_path, '--remove-unused-variables', '--entry', 'main', '--output', glsl_path, spirv_path])
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else:
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subprocess.check_call([spirv_cross_path, '--entry', 'main', '--output', glsl_path, spirv_path])
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# A shader might not be possible to make valid GLSL from, skip validation for this case.
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if (not ('nocompat' in glsl_path)) and (not spirv):
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validate_shader(glsl_path, False)
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if vulkan or spirv:
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if eliminate:
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subprocess.check_call([spirv_cross_path, '--remove-unused-variables', '--entry', 'main', '--vulkan-semantics', '--output', vulkan_glsl_path, spirv_path])
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else:
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subprocess.check_call([spirv_cross_path, '--entry', 'main', '--vulkan-semantics', '--output', vulkan_glsl_path, spirv_path])
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validate_shader(vulkan_glsl_path, vulkan)
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return (spirv_path, glsl_path, vulkan_glsl_path if vulkan else None)
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def md5_for_file(path):
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md5 = hashlib.md5()
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with open(path, 'rb') as f:
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for chunk in iter(lambda: f.read(8192), b''):
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md5.update(chunk)
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return md5.digest()
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def make_reference_dir(path):
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base = os.path.dirname(path)
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if not os.path.exists(base):
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os.makedirs(base)
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def reference_path(directory, relpath):
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split_paths = os.path.split(directory)
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reference_dir = os.path.join(split_paths[0], 'reference/')
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reference_dir = os.path.join(reference_dir, split_paths[1])
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return os.path.join(reference_dir, relpath)
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def regression_check(shader, glsl, update, keep):
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reference = reference_path(shader[0], shader[1])
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joined_path = os.path.join(shader[0], shader[1])
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print('Reference shader path:', reference)
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if os.path.exists(reference):
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if md5_for_file(glsl) != md5_for_file(reference):
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if update:
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print('Generated GLSL has changed for {}!'.format(reference))
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# If we expect changes, update the reference file.
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if os.path.exists(reference):
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os.remove(reference)
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make_reference_dir(reference)
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shutil.move(glsl, reference)
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else:
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print('Generated GLSL in {} does not match reference {}!'.format(glsl, reference))
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# Otherwise, fail the test. Keep the shader file around so we can inspect.
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if not keep:
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os.remove(glsl)
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sys.exit(1)
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else:
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os.remove(glsl)
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else:
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print('Found new shader {}. Placing GLSL in {}'.format(joined_path, reference))
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make_reference_dir(reference)
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shutil.move(glsl, reference)
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def shader_is_vulkan(shader):
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return '.vk.' in shader
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def shader_is_desktop(shader):
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return '.desktop.' in shader
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def shader_is_eliminate_dead_variables(shader):
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return '.noeliminate.' not in shader
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def shader_is_spirv(shader):
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return '.asm.' in shader
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def shader_is_invalid_spirv(shader):
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return '.invalid.' in shader
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def test_shader(stats, shader, update, keep):
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joined_path = os.path.join(shader[0], shader[1])
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vulkan = shader_is_vulkan(shader[1])
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desktop = shader_is_desktop(shader[1])
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eliminate = shader_is_eliminate_dead_variables(shader[1])
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is_spirv = shader_is_spirv(shader[1])
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invalid_spirv = shader_is_invalid_spirv(shader[1])
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print('Testing shader:', joined_path)
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spirv, glsl, vulkan_glsl = cross_compile(joined_path, vulkan, is_spirv, eliminate, invalid_spirv)
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# Only test GLSL stats if we have a shader following GL semantics.
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if stats and (not vulkan) and (not is_spirv) and (not desktop):
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cross_stats = get_shader_stats(glsl)
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regression_check(shader, glsl, update, keep)
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if vulkan_glsl:
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regression_check((shader[0], shader[1] + '.vk'), vulkan_glsl, update, keep)
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os.remove(spirv)
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if stats and (not vulkan) and (not is_spirv) and (not desktop):
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pristine_stats = get_shader_stats(joined_path)
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a = []
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a.append(shader[1])
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for i in pristine_stats:
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a.append(str(i))
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for i in cross_stats:
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a.append(str(i))
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print(','.join(a), file = stats)
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def test_shaders_helper(stats, shader_dir, update, malisc, keep):
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for root, dirs, files in os.walk(os.path.join(shader_dir)):
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for i in files:
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path = os.path.join(root, i)
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relpath = os.path.relpath(path, shader_dir)
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test_shader(stats, (shader_dir, relpath), update, keep)
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def test_shaders(shader_dir, update, malisc, keep):
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if malisc:
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with open('stats.csv', 'w') as stats:
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print('Shader,OrigRegs,OrigUniRegs,OrigALUShort,OrigLSShort,OrigTEXShort,OrigALULong,OrigLSLong,OrigTEXLong,CrossRegs,CrossUniRegs,CrossALUShort,CrossLSShort,CrossTEXShort,CrossALULong,CrossLSLong,CrossTEXLong', file = stats)
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test_shaders_helper(stats, shader_dir, update, malisc, keep)
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else:
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test_shaders_helper(None, shader_dir, update, malisc, keep)
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def main():
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parser = argparse.ArgumentParser(description = 'Script for regression testing.')
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parser.add_argument('folder',
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help = 'Folder containing shader files to test.')
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parser.add_argument('--update',
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action = 'store_true',
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help = 'Updates reference files if there is a mismatch. Use when legitimate changes in output is found.')
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parser.add_argument('--keep',
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action = 'store_true',
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help = 'Leave failed GLSL shaders on disk if they fail regression. Useful for debugging.')
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parser.add_argument('--malisc',
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action = 'store_true',
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help = 'Use malisc offline compiler to determine static cycle counts before and after spirv-cross.')
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args = parser.parse_args()
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if not args.folder:
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sys.stderr.write('Need shader folder.\n')
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sys.exit(1)
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test_shaders(args.folder, args.update, args.malisc, args.keep)
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if args.malisc:
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print('Stats in stats.csv!')
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print('Tests completed!')
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if __name__ == '__main__':
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main()
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