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# Copyright (c) 2001, Stanford University
# All rights reserved.
#
# See the file LICENSE.txt for information on redistributing this software.
"""
This module generates C entrypoints for all the OpenGL functions
and the special Chromium meta/glue functions.
"""
from __future__ import print_function
import sys
import apiutil
def GenerateEntrypoints(hacks = []):
"""Emit code for all the OpenGL/Chromium entrypoints.
hacks is an optional list of functions which are special cased.
"""
apiutil.CopyrightC()
print('#define GL_GLEXT_PROTOTYPES')
print('#include <stdio.h>')
print('#include <stdlib.h>')
print('#include <GL/gl.h>')
print('#include "chromium.h"')
print('#include "stub.h"')
print('#include "dri_glx.h"')
print('')
print('#ifdef __GNUC__')
print('# if (__GNUC__ << 16) + __GNUC_MINOR__ >= 0x40002')
print('# pragma GCC diagnostic ignored "-Wunused-parameter"')
print('# endif')
print('#endif')
# Get sorted list of dispatched functions.
# The order is very important - it must match cr_opcodes.h
# and spu_dispatch_table.h
keys = apiutil.GetDispatchedFunctions(sys.argv[1]+"/APIspec.txt")
for index in range(len(keys)):
func_name = keys[index]
if apiutil.Category(func_name) == "Chromium":
# this function is defined in stub.c
continue
return_type = apiutil.ReturnType(func_name)
params = apiutil.Parameters(func_name)
if func_name in hacks:
print("/* hacked entrypoint: %s */" % func_name)
if func_name == "TexImage3D":
# Pretty common: internalformat is GLenum, not GLint
print("void glTexImage3D( GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, const GLvoid *pixels )")
print("{")
print("\tglim.TexImage3D( target, level, (GLint) internalformat, width, height, depth, border, format, type, pixels );")
print("}")
elif func_name == "TexImage2D":
# Pretty common: internalformat is GLenum, not GLint
print("void glTexImage2D( GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid *pixels )")
print("{")
print("\tglim.TexImage2D( target, level, (GLint) internalformat, width, height, border, format, type, pixels );")
print("}")
elif func_name == "TexImage1D":
# Pretty common: internalformat is GLenum, not GLint
print("void glTexImage1D( GLenum target, GLint level, GLenum internalformat, GLsizei width, GLint border, GLenum format, GLenum type, const GLvoid *pixels )")
print("{")
print("\tglim.TexImage1D( target, level, (GLint) internalformat, width, border, format, type, pixels );")
print("}")
elif func_name == "EdgeFlagPointer":
# second arg is GLboolean instead of GLvoid
print("void glEdgeFlagPointer( GLsizei stride, const GLboolean *pointer )")
print("{")
print("\tglim.EdgeFlagPointer( stride, pointer );")
print("}")
elif func_name == "ProgramParameters4fvNV":
print("void glProgramParameters4fvNV( GLenum target, GLuint index, GLuint num, const GLfloat *params )")
print("{")
print("\tglim.ProgramParameters4fvNV( target, index, num, params );")
print("}")
elif func_name == "MultiDrawElementsEXT":
print("void glMultiDrawElementsEXT(GLenum mode, GLsizei *count, GLenum type, const GLvoid **indices, GLsizei primcount)")
print("{")
print("\tglim.MultiDrawElementsEXT(mode, count,type, indices, primcount);")
print("}")
elif func_name == "ProgramParameters4dvNV":
print("void glProgramParameters4dvNV( GLenum target, GLuint index, GLuint num, const GLdouble *params )")
print("{")
print("\tglim.ProgramParameters4dvNV( target, index, num, params );")
print("}")
else:
# the usual path
print("%s VBOXGLTAG(gl%s)(%s);" % (return_type, func_name, apiutil.MakeDeclarationString(params)))
print("")
print("%s VBOXGLTAG(gl%s)(%s)" % (return_type, func_name, apiutil.MakeDeclarationString(params)))
print("{")
print("\t", end="")
if return_type != "void":
print("return ", end=" ")
print("glim.%s(%s);" % (func_name, apiutil.MakeCallString(params)))
print("}")
print("")
print('/*')
print('* Aliases')
print('*/')
# Now loop over all the functions and take care of any aliases
allkeys = apiutil.GetAllFunctions(sys.argv[1]+"/APIspec.txt")
for func_name in allkeys:
if "omit" in apiutil.ChromiumProps(func_name):
continue
if func_name in keys:
# we already processed this function earlier
continue
# alias is the function we're aliasing
alias = apiutil.Alias(func_name)
if alias:
if func_name in hacks:
print("/* hacked entrypoint: %s */" % func_name)
if func_name == "MultiDrawArrays":
print("void glMultiDrawArrays( GLenum mode, const GLint *first, const GLsizei *count, GLsizei primcount )")
print("{")
print("\tglim.MultiDrawArraysEXT( mode, (GLint*)first, (GLsizei*)count, primcount );")
print("}")
elif func_name == "BufferData":
print("void glBufferData(GLenum target, GLsizeiptr size, const GLvoid *data, GLenum usage)")
print("{")
print("\tglim.BufferDataARB(target, size, data, usage);")
print("}")
elif func_name == "BufferSubData":
print("void glBufferSubData(GLenum target, GLintptr offset, GLsizeiptr size, const GLvoid *data)")
print("{")
print("\tglim.BufferSubDataARB(target, offset, size, data);")
print("}")
elif func_name == "GetBufferSubData":
print("void glGetBufferSubData(GLenum target, GLintptr offset, GLsizeiptr size, GLvoid *data)")
print("{")
print("\tglim.GetBufferSubDataARB(target, offset, size, data);")
print("}")
else:
return_type = apiutil.ReturnType(func_name)
params = apiutil.Parameters(func_name)
print("%s VBOXGLTAG(gl%s)(%s);" % (return_type, func_name, apiutil.MakeDeclarationString(params)))
print("")
print("%s VBOXGLTAG(gl%s)(%s)" % (return_type, func_name, apiutil.MakeDeclarationString(params)))
print("{")
print("\t", end="")
if return_type != "void":
print("return ", end=" ")
print("glim.%s(%s);" % (alias, apiutil.MakeCallString(params)))
print("}")
print("")
print('/*')
print('* No-op stubs')
print('*/')
# Now generate no-op stub functions
for func_name in allkeys:
if "stub" in apiutil.ChromiumProps(func_name):
return_type = apiutil.ReturnType(func_name)
params = apiutil.Parameters(func_name)
print("%s VBOXGLTAG(gl%s)(%s);" % (return_type, func_name, apiutil.MakeDeclarationString(params)))
print("")
print("%s VBOXGLTAG(gl%s)(%s)" % (return_type, func_name, apiutil.MakeDeclarationString(params)))
print("{")
if return_type != "void":
print("return (%s) 0" % return_type)
print("}")
print("")
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