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Cleanup arm.lib.make_datas

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This commit is contained in:
Moritz Brückner 2021-09-07 23:25:54 +02:00
parent ecc4317919
commit de72bbf3a4
1 changed files with 104 additions and 103 deletions
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207
blender/arm/lib/make_datas.py
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@ -1,14 +1,15 @@
import os
import arm.utils
import arm.assets as assets
def parse_context(c, sres, asset, defs, vert=None, frag=None):
con = {}
def parse_context(c: dict, sres: dict, asset, defs: list[str], vert: list[str] = None, frag: list[str] = None):
con = {
'name': c['name'],
'constants': [],
'texture_units': [],
'vertex_elements': []
}
sres['contexts'].append(con)
con['name'] = c['name']
con['constants'] = []
con['texture_units'] = []
con['vertex_elements'] = []
# Names
con['vertex_shader'] = c['vertex_shader'].rsplit('.', 1)[0].split('/')[-1]
@ -52,12 +53,12 @@ def parse_context(c, sres, asset, defs, vert=None, frag=None):
con[p] = c[p]
# Parse shaders
if vert == None:
if vert is None:
with open(c['vertex_shader']) as f:
vert = f.read().splitlines()
parse_shader(sres, c, con, defs, vert, True) # Parse attribs for vertex shader
if frag == None:
if frag is None:
with open(c['fragment_shader']) as f:
frag = f.read().splitlines()
parse_shader(sres, c, con, defs, frag, False)
@ -77,62 +78,76 @@ def parse_context(c, sres, asset, defs, vert=None, frag=None):
tese = f.read().splitlines()
parse_shader(sres, c, con, defs, tese, False)
def parse_shader(sres, c, con, defs, lines, parse_attributes):
skip_till_endif = 0
skip_else = False
def parse_shader(sres, c: dict, con: dict, defs: list[str], lines: list[str], parse_attributes: bool):
"""Parses the given shader to get information about the used vertex
elements, uniforms and constants. This information is later used in
Iron to check what data each shader requires.
@param defs A list of set defines for the preprocessor
@param lines The list of lines of the shader file
@param parse_attributes Whether to parse vertex elements
"""
vertex_elements_parsed = False
vertex_elements_parsing = False
stack = []
# Stack of the state of all preprocessor conditions for the current
# line. If there is a `False` in the stack, at least one surrounding
# condition is false and the line must not be parsed
stack: list[bool] = []
if parse_attributes == False:
if not parse_attributes:
vertex_elements_parsed = True
for line in lines:
line = line.lstrip()
# Preprocessor
if line.startswith('#if'): # if, ifdef, ifndef
if line.startswith('#if'): # if, ifdef, ifndef
s = line.split(' ')[1]
found = s in defs
if line.startswith('#ifndef'):
found = not found
if found == False:
stack.append(0)
else:
stack.append(1)
stack.append(found)
continue
if line.startswith('#else'):
stack[-1] = 1 - stack[-1]
stack[-1] = not stack[-1]
continue
if line.startswith('#endif'):
stack.pop()
continue
# Skip lines if the stack contains at least one preprocessor
# condition that is not fulfilled
skip = False
for i in stack:
if i == 0:
for condition in stack:
if not condition:
skip = True
break
if skip:
continue
if vertex_elements_parsed == False and line.startswith('in '):
if not vertex_elements_parsed and line.startswith('in '):
vertex_elements_parsing = True
vd = {}
s = line.split(' ')
vd['data'] = 'float' + s[1][-1:]
vd['name'] = s[2][:-1]
con['vertex_elements'].append(vd)
if vertex_elements_parsing == True and len(line) > 0 and line.startswith('//') == False and line.startswith('in ') == False:
con['vertex_elements'].append({
'data': 'float' + s[1][-1:],
'name': s[2][:-1] # [:1] to get rid of the semicolon
})
# Stop the vertex element parsing if no other vertex elements
# follow directly (assuming all vertex elements are positioned
# directly after each other apart from empty lines and comments)
if vertex_elements_parsing and len(line) > 0 and not line.startswith('//') and not line.startswith('in '):
vertex_elements_parsed = True
if line.startswith('uniform ') or line.startswith('//!uniform'): # Uniforms included from header files
s = line.split(' ')
# uniform sampler2D myname;
# uniform layout(RGBA8) image3D myname;
# Examples:
# uniform sampler2D myname;
# uniform layout(RGBA8) image3D myname;
if s[1].startswith('layout'):
ctype = s[2]
cid = s[3]
@ -144,57 +159,27 @@ def parse_shader(sres, c, con, defs, lines, parse_attributes):
if cid[-1] == ';':
cid = cid[:-1]
found = False # Unique check
found = False # Uniqueness check
if ctype.startswith('sampler') or ctype.startswith('image') or ctype.startswith('uimage'): # Texture unit
for tu in con['texture_units']: # Texture already present
for tu in con['texture_units']:
if tu['name'] == cid:
# Texture already present
found = True
break
if found == False:
if not found:
if cid[-1] == ']': # Array of samplers - sampler2D mySamplers[2]
# Add individual units - mySamplers[0], mySamplers[1]
for i in range(int(cid[-2])):
tu = {}
tu = {'name': cid[:-2] + str(i) + ']'}
con['texture_units'].append(tu)
tu['name'] = cid[:-2] + str(i) + ']'
else:
tu = {}
tu = {'name': cid}
con['texture_units'].append(tu)
tu['name'] = cid
if ctype.startswith('image') or ctype.startswith('uimage'):
tu['is_image'] = True
# Check for link
for l in c['links']:
if l['name'] == cid:
valid_link = True
if 'ifdef' in l:
def_found = False
for d in defs:
for link_def in l['ifdef']:
if d == link_def:
def_found = True
break
if def_found:
break
if not def_found:
valid_link = False
check_link(c, defs, cid, tu)
if 'ifndef' in l:
def_found = False
for d in defs:
for link_def in l['ifndef']:
if d == link_def:
def_found = True
break
if def_found:
break
if def_found:
valid_link = False
if valid_link:
tu['link'] = l['link']
break
else: # Constant
if cid.find('[') != -1: # Float arrays
cid = cid.split('[')[0]
@ -203,49 +188,65 @@ def parse_shader(sres, c, con, defs, lines, parse_attributes):
if const['name'] == cid:
found = True
break
if found == False:
const = {}
if not found:
const = {
'type': ctype,
'name': cid
}
con['constants'].append(const)
const['type'] = ctype
const['name'] = cid
# Check for link
for l in c['links']:
if l['name'] == cid:
valid_link = True
if 'ifdef' in l:
def_found = False
for d in defs:
for link_def in l['ifdef']:
if d == link_def:
def_found = True
break
if def_found:
break
if not def_found:
valid_link = False
check_link(c, defs, cid, const)
if 'ifndef' in l:
def_found = False
for d in defs:
for link_def in l['ifndef']:
if d == link_def:
def_found = True
break
if def_found:
break
if def_found:
valid_link = False
if valid_link:
const['link'] = l['link']
def check_link(source_context: dict, defs: list[str], cid: str, out: dict):
"""Checks whether the uniform/constant with the given name (`cid`)
has a link stated in the json (`source_context`) that can be safely
included based on the given defines (`defs`). If that is the case,
the found link is written to the `out` dictionary.
"""
for link in source_context['links']:
if link['name'] == cid:
valid_link = True
# Optionally only use link if at least
# one of the given defines is set
if 'ifdef' in link:
def_found = False
for d in defs:
for link_def in link['ifdef']:
if d == link_def:
def_found = True
break
if def_found:
break
if not def_found:
valid_link = False
def make(res, base_name, json_data, fp, defs, make_variants):
sres = {}
# Optionally only use link if none of
# the given defines are set
if 'ifndef' in link:
def_found = False
for d in defs:
for link_def in link['ifndef']:
if d == link_def:
def_found = True
break
if def_found:
break
if def_found:
valid_link = False
if valid_link:
out['link'] = link['link']
break
def make(res: dict, base_name: str, json_data: dict, fp, defs: list[str], make_variants: bool):
sres = {
'name': base_name,
'contexts': []
}
res['shader_datas'].append(sres)
sres['name'] = base_name
sres['contexts'] = []
asset = assets.shader_passes_assets[base_name]
vert = None