packer.py revision fcded3b75bf930c68355adc3e3757e35e9cabde4
45e9809aff7304721fddb95654901b32195c9c7avboxsync# Copyright (c) 2001, Stanford University
45e9809aff7304721fddb95654901b32195c9c7avboxsync# All rights reserved.
45e9809aff7304721fddb95654901b32195c9c7avboxsync#
45e9809aff7304721fddb95654901b32195c9c7avboxsync# See the file LICENSE.txt for information on redistributing this software.
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync# This script generates the packer.c file from the gl_header.parsed file.
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsyncimport sys, string, re
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsyncimport apiutil
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsyncdef WriteData( offset, arg_type, arg_name, is_swapped ):
45e9809aff7304721fddb95654901b32195c9c7avboxsync """Return a string to write a variable to the packing buffer."""
45e9809aff7304721fddb95654901b32195c9c7avboxsync retval = 9
45e9809aff7304721fddb95654901b32195c9c7avboxsync if apiutil.IsPointer(arg_type):
45e9809aff7304721fddb95654901b32195c9c7avboxsync retval = "\tWRITE_NETWORK_POINTER( %d, (void *) %s );" % (offset, arg_name )
45e9809aff7304721fddb95654901b32195c9c7avboxsync else:
45e9809aff7304721fddb95654901b32195c9c7avboxsync if is_swapped:
45e9809aff7304721fddb95654901b32195c9c7avboxsync if arg_type == "GLfloat" or arg_type == "GLclampf":
45e9809aff7304721fddb95654901b32195c9c7avboxsync retval = "\tWRITE_DATA( %d, GLuint, SWAPFLOAT(%s) );" % (offset, arg_name)
45e9809aff7304721fddb95654901b32195c9c7avboxsync elif arg_type == "GLdouble" or arg_type == "GLclampd":
45e9809aff7304721fddb95654901b32195c9c7avboxsync retval = "\tWRITE_SWAPPED_DOUBLE( %d, %s );" % (offset, arg_name)
45e9809aff7304721fddb95654901b32195c9c7avboxsync elif apiutil.sizeof(arg_type) == 1:
45e9809aff7304721fddb95654901b32195c9c7avboxsync retval = "\tWRITE_DATA( %d, %s, %s );" % (offset, arg_type, arg_name)
45e9809aff7304721fddb95654901b32195c9c7avboxsync elif apiutil.sizeof(arg_type) == 2:
45e9809aff7304721fddb95654901b32195c9c7avboxsync retval = "\tWRITE_DATA( %d, %s, SWAP16(%s) );" % (offset, arg_type, arg_name)
45e9809aff7304721fddb95654901b32195c9c7avboxsync elif apiutil.sizeof(arg_type) == 4:
45e9809aff7304721fddb95654901b32195c9c7avboxsync retval = "\tWRITE_DATA( %d, %s, SWAP32(%s) );" % (offset, arg_type, arg_name)
45e9809aff7304721fddb95654901b32195c9c7avboxsync else:
45e9809aff7304721fddb95654901b32195c9c7avboxsync if arg_type == "GLdouble" or arg_type == "GLclampd":
45e9809aff7304721fddb95654901b32195c9c7avboxsync retval = "\tWRITE_DOUBLE( %d, %s );" % (offset, arg_name)
45e9809aff7304721fddb95654901b32195c9c7avboxsync else:
45e9809aff7304721fddb95654901b32195c9c7avboxsync retval = "\tWRITE_DATA( %d, %s, %s );" % (offset, arg_type, arg_name)
45e9809aff7304721fddb95654901b32195c9c7avboxsync if retval == 9:
45e9809aff7304721fddb95654901b32195c9c7avboxsync print >>sys.stderr, "no retval for %s %s" % (arg_name, arg_type)
45e9809aff7304721fddb95654901b32195c9c7avboxsync assert 0
45e9809aff7304721fddb95654901b32195c9c7avboxsync return retval
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsyncdef UpdateCurrentPointer( func_name ):
45e9809aff7304721fddb95654901b32195c9c7avboxsync m = re.search( r"^(Color|Normal)([1234])(ub|b|us|s|ui|i|f|d)$", func_name )
45e9809aff7304721fddb95654901b32195c9c7avboxsync if m :
45e9809aff7304721fddb95654901b32195c9c7avboxsync k = m.group(1)
45e9809aff7304721fddb95654901b32195c9c7avboxsync name = '%s%s' % (k[:1].lower(),k[1:])
45e9809aff7304721fddb95654901b32195c9c7avboxsync type = m.group(3) + m.group(2)
45e9809aff7304721fddb95654901b32195c9c7avboxsync print "\tpc->current.c.%s.%s = data_ptr;" % (name,type)
45e9809aff7304721fddb95654901b32195c9c7avboxsync return
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync m = re.search( r"^(SecondaryColor)(3)(ub|b|us|s|ui|i|f|d)EXT$", func_name )
45e9809aff7304721fddb95654901b32195c9c7avboxsync if m :
45e9809aff7304721fddb95654901b32195c9c7avboxsync k = m.group(1)
45e9809aff7304721fddb95654901b32195c9c7avboxsync name = 'secondaryColor'
45e9809aff7304721fddb95654901b32195c9c7avboxsync type = m.group(3) + m.group(2)
45e9809aff7304721fddb95654901b32195c9c7avboxsync print "\tpc->current.c.%s.%s = data_ptr;" % (name,type)
45e9809aff7304721fddb95654901b32195c9c7avboxsync return
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync m = re.search( r"^(TexCoord)([1234])(ub|b|us|s|ui|i|f|d)$", func_name )
45e9809aff7304721fddb95654901b32195c9c7avboxsync if m :
45e9809aff7304721fddb95654901b32195c9c7avboxsync k = m.group(1)
45e9809aff7304721fddb95654901b32195c9c7avboxsync name = 'texCoord'
45e9809aff7304721fddb95654901b32195c9c7avboxsync type = m.group(3) + m.group(2)
45e9809aff7304721fddb95654901b32195c9c7avboxsync print "\tpc->current.c.%s.%s[0] = data_ptr;" % (name,type)
45e9809aff7304721fddb95654901b32195c9c7avboxsync return
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync m = re.search( r"^(MultiTexCoord)([1234])(ub|b|us|s|ui|i|f|d)ARB$", func_name )
45e9809aff7304721fddb95654901b32195c9c7avboxsync if m :
45e9809aff7304721fddb95654901b32195c9c7avboxsync k = m.group(1)
name = 'texCoord'
type = m.group(3) + m.group(2)
print "\tpc->current.c.%s.%s[texture-GL_TEXTURE0_ARB] = data_ptr + 4;" % (name,type)
return
m = re.match( r"^(Index)(ub|b|us|s|ui|i|f|d)$", func_name )
if m :
k = m.group(1)
name = 'index'
type = m.group(2) + "1"
print "\tpc->current.c.%s.%s = data_ptr;" % (name,type)
return
m = re.match( r"^(EdgeFlag)$", func_name )
if m :
k = m.group(1)
name = 'edgeFlag'
type = "l1"
print "\tpc->current.c.%s.%s = data_ptr;" % (name,type)
return
m = re.match( r"^(FogCoord)(f|d)EXT$", func_name )
if m :
k = m.group(1)
name = 'fogCoord'
type = m.group(2) + "1"
print "\tpc->current.c.%s.%s = data_ptr;" % (name,type)
return
m = re.search( r"^(VertexAttrib)([1234])N?(ub|b|s|f|d)(NV|ARB)$", func_name )
if m :
k = m.group(1)
name = 'vertexAttrib'
type = m.group(3) + m.group(2)
# Add 12 to skip the packet length, opcode and index fields
print "\tpc->current.c.%s.%s[index] = data_ptr + 4;" % (name,type)
if m.group(4) == "ARB" or m.group(4) == "NV":
print "\tpc->current.attribsUsedMask |= (1 << index);"
print "\tpc->current.changedVertexAttrib |= (1 << index);"
return
def PrintFunc( func_name, params, is_swapped, can_have_pointers ):
"""Emit a packer function."""
if is_swapped:
print 'void PACK_APIENTRY crPack%sSWAP( %s )' % (func_name, apiutil.MakeDeclarationStringWithContext('CR_PACKER_CONTEXT', params))
else:
print 'void PACK_APIENTRY crPack%s( %s )' % (func_name, apiutil.MakeDeclarationStringWithContext('CR_PACKER_CONTEXT', params))
print '{'
print '\tCR_GET_PACKER_CONTEXT(pc);'
# Save original function name
orig_func_name = func_name
# Convert to a non-vector version of the function if possible
func_name = apiutil.NonVectorFunction( func_name )
if not func_name:
func_name = orig_func_name
# Check if there are any pointer parameters.
# That's usually a problem so we'll emit an error function.
nonVecParams = apiutil.Parameters(func_name)
bail_out = 0
for (name, type, vecSize) in nonVecParams:
if apiutil.IsPointer(type) and vecSize == 0 and not can_have_pointers:
bail_out = 1
if bail_out:
for (name, type, vecSize) in nonVecParams:
print '\t(void)%s;' % (name)
print '\tcrError ( "%s needs to be special cased %d %d!");' % (func_name, vecSize, can_have_pointers)
print '\t(void) pc;'
print '}'
# XXX we should really abort here
return
if "extpack" in apiutil.ChromiumProps(func_name):
is_extended = 1
else:
is_extended = 0
print "\tunsigned char *data_ptr;"
print '\t(void) pc;'
#if func_name == "Enable" or func_name == "Disable":
# print "\tCRASSERT(!pc->buffer.geometry_only); /* sanity check */"
for index in range(0,len(params)):
(name, type, vecSize) = params[index]
if vecSize>0 and func_name!=orig_func_name:
print " if (!%s) {" % name
# Know the reason for this one, so avoid the spam.
if orig_func_name != "SecondaryColor3fvEXT":
print " crDebug(\"App passed NULL as %s for %s\");" % (name, orig_func_name)
print " return;"
print " }"
packet_length = apiutil.PacketLength(nonVecParams)
if packet_length == 0 and not is_extended:
print "\tCR_GET_BUFFERED_POINTER_NO_ARGS( pc );"
elif func_name[:9] == "Translate" or func_name[:5] == "Color":
# XXX WTF is the purpose of this?
if is_extended:
packet_length += 8
print "\tCR_GET_BUFFERED_POINTER_NO_BEGINEND_FLUSH( pc, %d, GL_TRUE );" % packet_length
else:
if is_extended:
packet_length += 8
print "\tCR_GET_BUFFERED_POINTER( pc, %d );" % packet_length
UpdateCurrentPointer( func_name )
if is_extended:
counter = 8
print WriteData( 0, 'GLint', packet_length, is_swapped )
print WriteData( 4, 'GLenum', apiutil.ExtendedOpcodeName( func_name ), is_swapped )
else:
counter = 0
# Now emit the WRITE_() macros for all parameters
for index in range(0,len(params)):
(name, type, vecSize) = params[index]
# if we're converting a vector-valued function to a non-vector func:
if vecSize > 0 and func_name != orig_func_name:
ptrType = apiutil.PointerType(type)
for i in range(0, vecSize):
print WriteData( counter + i * apiutil.sizeof(ptrType),
ptrType, "%s[%d]" % (name, i), is_swapped )
# XXX increment counter here?
else:
print WriteData( counter, type, name, is_swapped )
if apiutil.IsPointer(type):
counter += apiutil.PointerSize()
else:
counter += apiutil.sizeof(type)
# finish up
if is_extended:
print "\tWRITE_OPCODE( pc, CR_EXTEND_OPCODE );"
else:
print "\tWRITE_OPCODE( pc, %s );" % apiutil.OpcodeName( func_name )
print '\tCR_UNLOCK_PACKER_CONTEXT(pc);'
print '}\n'
apiutil.CopyrightC()
print """
/* DO NOT EDIT - THIS FILE GENERATED BY THE packer.py SCRIPT */
/* For each of the OpenGL functions we have a packer function which
* packs the function's opcode and arguments into a buffer.
*/
#include "packer.h"
#include "cr_opcodes.h"
"""
keys = apiutil.GetDispatchedFunctions(sys.argv[1]+"/APIspec.txt")
for func_name in keys:
if apiutil.FindSpecial( "packer", func_name ):
continue
if not apiutil.HasPackOpcode(func_name):
continue
pointers_ok = 0
return_type = apiutil.ReturnType(func_name)
params = apiutil.Parameters(func_name)
if return_type != 'void':
# Yet another gross hack for glGetString
if string.find( return_type, '*' ) == -1:
return_type = return_type + " *"
params.append(("return_value", return_type, 0))
if "get" in apiutil.Properties(func_name):
pointers_ok = 1
params.append(("writeback", "int *", 0))
if func_name == 'Writeback':
pointers_ok = 1
PrintFunc( func_name, params, 0, pointers_ok )
PrintFunc( func_name, params, 1, pointers_ok )