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Use #defines to shrink the size of gl_generated_dispatch.c

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I was running into file size limits with win32 debug symbols.
macos/v1.5.9
Eric Anholt 11 years ago
parent 11a946cbf5
commit 370c49d5cd
2 changed files with 108 additions and 75 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 93
      src/dispatch_common.h
  2. 90
      src/gen_dispatch.py

93
src/dispatch_common.h
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@ -27,15 +27,18 @@
#define PLATFORM_HAS_EGL 0
#define PLATFORM_HAS_GLX 0
#define PLATFORM_HAS_WGL 1
#define EPOXYAPIENTRY __declspec(dllexport) __stdcall
#define EPOXYCALL __stdcall
#define EPOXYAPIENTRY __declspec(dllexport) EPOXYCALL
#elif defined(__APPLE__)
#define PLATFORM_HAS_EGL 0
#define PLATFORM_HAS_GLX 1
#define PLATFORM_HAS_WGL 0
#define EPOXYCALL
#else
#define PLATFORM_HAS_EGL 1
#define PLATFORM_HAS_GLX 1
#define PLATFORM_HAS_WGL 0
#define EPOXYCALL
#endif
#include "epoxy/gl.h"
@ -73,6 +76,76 @@
#define WRAPPER_VISIBILITY static GLAPIENTRY
#define WRAPPER(x) x ## _wrapped
#if USING_DISPATCH_TABLE
#define GEN_GLOBAL_REWRITE_PTR(name, args, passthrough)
#define GEN_GLOBAL_REWRITE_PTR_RET(ret, name, args, passthrough)
#define GEN_DISPATCH_TABLE_REWRITE_PTR(name, args, passthrough) \
static EPOXYCALL void \
name##_dispatch_table_rewrite_ptr args \
{ \
struct dispatch_table *dispatch_table = get_dispatch_table(); \
\
dispatch_table->name = (void *)name##_resolver(); \
dispatch_table->name passthrough; \
}
#define GEN_DISPATCH_TABLE_REWRITE_PTR_RET(ret, name, args, passthrough) \
static EPOXYCALL ret \
name##_dispatch_table_rewrite_ptr args \
{ \
struct dispatch_table *dispatch_table = get_dispatch_table(); \
\
dispatch_table->name = (void *)name##_resolver(); \
return dispatch_table->name passthrough; \
}
#define GEN_DISPATCH_TABLE_THUNK(name, args, passthrough) \
static EPOXYCALL void \
name##_dispatch_table_thunk args \
{ \
get_dispatch_table()->name passthrough; \
}
#define GEN_DISPATCH_TABLE_THUNK_RET(ret, name, args, passthrough) \
static EPOXYCALL ret \
name##_dispatch_table_thunk args \
{ \
return get_dispatch_table()->name passthrough; \
}
#else
#define GEN_GLOBAL_REWRITE_PTR(name, args, passthrough) \
static EPOXYCALL void \
name##_global_rewrite_ptr args \
{ \
name = (void *)name##_resolver(); \
name passthrough; \
}
#define GEN_GLOBAL_REWRITE_PTR_RET(ret, name, args, passthrough) \
static EPOXYCALL ret \
name##_global_rewrite_ptr args \
{ \
name = (void *)name##_resolver(); \
return name passthrough; \
}
#define GEN_DISPATCH_TABLE_REWRITE_PTR(name, args, passthrough)
#define GEN_DISPATCH_TABLE_REWRITE_PTR_RET(ret, name, args, passthrough)
#define GEN_DISPATCH_TABLE_THUNK(name, args, passthrough)
#define GEN_DISPATCH_TABLE_THUNK_RET(ret, name, args, passthrough)
#endif
#define GEN_THUNKS(name, args, passthrough) \
GEN_GLOBAL_REWRITE_PTR(name, args, passthrough) \
GEN_DISPATCH_TABLE_REWRITE_PTR(name, args, passthrough) \
GEN_DISPATCH_TABLE_THUNK(name, args, passthrough)
#define GEN_THUNKS_RET(ret, name, args, passthrough) \
GEN_GLOBAL_REWRITE_PTR_RET(ret, name, args, passthrough) \
GEN_DISPATCH_TABLE_REWRITE_PTR_RET(ret, name, args, passthrough) \
GEN_DISPATCH_TABLE_THUNK_RET(ret, name, args, passthrough)
void *epoxy_egl_dlsym(const char *name);
void *epoxy_glx_dlsym(const char *name);
void *epoxy_gl_dlsym(const char *name);
@ -96,16 +169,22 @@ void epoxy_print_failure_reasons(const char *name,
bool epoxy_extension_in_string(const char *extension_list, const char *ext);
extern void UNWRAPPED_PROTO(epoxy_glBegin_unwrapped)(GLenum primtype);
extern void UNWRAPPED_PROTO(epoxy_glEnd_unwrapped)(void);
#define glBegin_unwrapped epoxy_glBegin_unwrapped
#define glEnd_unwrapped epoxy_glEnd_unwrapped
extern void UNWRAPPED_PROTO(glBegin_unwrapped)(GLenum primtype);
extern void UNWRAPPED_PROTO(glEnd_unwrapped)(void);
#if USING_DISPATCH_TABLE
void gl_init_dispatch_table(void);
void wgl_init_dispatch_table(void);
extern uint32_t gl_tls_index, gl_tls_size;
extern uint32_t wgl_tls_index, wgl_tls_size;
extern BOOL UNWRAPPED_PROTO(epoxy_wglMakeCurrent_unwrapped)(HDC hdc, HGLRC hglrc);
extern BOOL UNWRAPPED_PROTO(epoxy_wglMakeContextCurrentARB_unwrapped)(HDC hDrawDC, HDC hReadDC, HGLRC hglrc);
extern BOOL UNWRAPPED_PROTO(epoxy_wglMakeContextCurrentEXT_unwrapped)(HDC hDrawDC, HDC hReadDC, HGLRC hglrc);
extern BOOL UNWRAPPED_PROTO(epoxy_wglMakeAssociatedContextCurrentAMD_unwrapped)(HGLRC hglrc);
#define wglMakeCurrent_unwrapped epoxy_wglMakeCurrent_unwrapped
#define wglMakeContextCurrentARB_unwrapped epoxy_wglMakeContextCurrentARB_unwrapped
#define wglMakeContextCurrentEXT_unwrapped epoxy_wglMakeContextCurrentEXT_unwrapped
#define wglMakeAssociatedContextCurrentAMD_unwrapped epoxy_wglMakeAssociatedContextCurrentAMD_unwrapped
extern BOOL UNWRAPPED_PROTO(wglMakeCurrent_unwrapped)(HDC hdc, HGLRC hglrc);
extern BOOL UNWRAPPED_PROTO(wglMakeContextCurrentARB_unwrapped)(HDC hDrawDC, HDC hReadDC, HGLRC hglrc);
extern BOOL UNWRAPPED_PROTO(wglMakeContextCurrentEXT_unwrapped)(HDC hDrawDC, HDC hReadDC, HGLRC hglrc);
extern BOOL UNWRAPPED_PROTO(wglMakeAssociatedContextCurrentAMD_unwrapped)(HGLRC hglrc);
#endif

90
src/gen_dispatch.py
Unescape View File

@ -535,7 +535,7 @@ class Generator(object):
def write_function_ptr_resolver(self, func):
self.outln('static {0}'.format(func.ptr_type))
self.outln('epoxy_{0}_resolver(void)'.format(func.name))
self.outln('epoxy_{0}_resolver(void)'.format(func.wrapped_name))
self.outln('{')
providers = []
@ -594,70 +594,27 @@ class Generator(object):
self.outln('}')
self.outln('')
def write_dispatch_table_thunk(self, func):
# Writes out the thunk that fetches the (win32) dispatch table
# and calls through its entrypoint.
dispatch_table_entry = 'dispatch_table->p{0}'.format(func.name)
self.outln('static __stdcall {0}'.format(func.ret_type))
self.outln('epoxy_{0}_dispatch_table_thunk({1})'.format(func.wrapped_name, func.args_decl))
self.outln('{')
self.outln(' struct dispatch_table *dispatch_table = get_dispatch_table();')
self.outln('')
if func.ret_type == 'void':
self.outln(' {0}({1});'.format(dispatch_table_entry, func.args_list))
else:
self.outln(' return {0}({1});'.format(dispatch_table_entry, func.args_list))
self.outln('}')
self.outln('')
def write_dispatch_table_rewrite_stub(self, func):
# Writes out the initial dispatch table function pointer value
# that that resolves, writes the resolved value into the
# dispatch table, and calls down to it.
dispatch_table_entry = 'dispatch_table->p{0}'.format(func.name)
self.outln('static GLAPIENTRY {0}'.format(func.ret_type))
self.outln('epoxy_{0}_rewrite_stub({1})'.format(func.name, func.args_decl))
self.outln('{')
self.outln(' struct dispatch_table *dispatch_table = get_dispatch_table();')
self.outln('')
self.outln(' dispatch_table->p{0} = epoxy_{0}_resolver();'.format(func.name))
self.outln('')
def write_thunks(self, func):
# Writes out the function that's initially plugged into the
# global function pointer, which resolves, updates the global
# function pointer, and calls down to it.
#
# It also writes out the actual initialized global function
# pointer.
if func.ret_type == 'void':
self.outln(' dispatch_table->p{0}({1});'.format(func.name, func.args_list))
self.outln('GEN_THUNKS({0}, ({1}), ({2}))'.format(func.wrapped_name,
func.args_decl,
func.args_list))
else:
self.outln(' return dispatch_table->p{0}({1});'.format(func.name, func.args_list))
self.outln('}')
self.outln('')
self.outln('GEN_THUNKS_RET({0}, {1}, ({2}), ({3}))'.format(func.ret_type,
func.wrapped_name,
func.args_decl,
func.args_list))
def write_linux_function_pointer(self, func):
# Writes out the function for resolving and updating the
# global function pointer, plus the actual global function
# pointer initializer.
self.outln('static {0}'.format(func.ret_type))
self.outln('epoxy_{0}_rewrite_ptr({1})'.format(func.wrapped_name,
func.args_decl))
self.outln('{')
self.outln(' epoxy_{0} = (void *)epoxy_{1}_resolver();'.format(func.wrapped_name,
func.name))
if func.ret_type == 'void':
self.outln(' epoxy_{0}({1});'.format(func.wrapped_name,
func.args_list))
else:
self.outln(' return epoxy_{0}({1});'.format(func.wrapped_name,
func.args_list))
self.outln('}')
self.outln('{0}{1} epoxy_{2} = epoxy_{2}_rewrite_ptr;'.format(func.public,
func.ptr_type,
func.wrapped_name))
self.outln('{0}{1} epoxy_{2} = epoxy_{2}_global_rewrite_ptr;'.format(func.public,
func.ptr_type,
func.wrapped_name))
self.outln('')
def write_win32_function_pointer(self, func):
@ -779,7 +736,7 @@ class Generator(object):
self.outln('struct dispatch_table {')
for func in self.sorted_functions:
self.outln(' {0} p{1};'.format(func.ptr_type, func.name))
self.outln(' {0} epoxy_{1};'.format(func.ptr_type, func.wrapped_name))
self.outln('};')
self.outln('')
@ -801,17 +758,14 @@ class Generator(object):
for func in self.sorted_functions:
self.write_function_ptr_resolver(func)
self.outln('#if USING_DISPATCH_TABLE')
for func in self.sorted_functions:
self.write_dispatch_table_rewrite_stub(func)
self.write_thunks(func)
for func in self.sorted_functions:
self.write_dispatch_table_thunk(func)
self.outln('#if USING_DISPATCH_TABLE')
self.outln('static struct dispatch_table resolver_table = {')
for func in self.sorted_functions:
self.outln(' .p{0} = epoxy_{0}_rewrite_stub,'.format(func.name))
self.outln(' .{0} = epoxy_{0}_dispatch_table_rewrite_ptr,'.format(func.wrapped_name))
self.outln('};')
self.outln('')

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