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authorChia-I Wu <olv@lunarg.com>2011-01-14 17:50:29 +0800
committerChia-I Wu <olv@lunarg.com>2011-01-22 11:59:05 +0800
commitbb770af3a59e5935c108c05ee45490fc5668d4a3 (patch)
tree206b869b2a2d740570349b1e4412cf51c172e56b /src/mapi
parent3f04314ae2659748c8cf73ec649a035bc9e01597 (diff)
scons: Add support for GLES.
GLES can be enabled by running scons with $ scons gles=yes When gles=yes is given, the build is changed in three ways. First, libmesa.a will be built with FEATURE_ES1 and FEATURE_ES2. This makes DRI drivers and libEGL support and advertise GLES support. Second, GLES libraries will be created. They are libGLESv1_CM, libGLESv2, and libglapi. Last, libGL or opengl32 will link to libglapi. This change is required as _glapi_* will be declared as __declspec(dllimport) in libmesa.a on windows. libmesa.a expects those symbols to be defined in another DLL. Due to this change to GL, GLES support is marked experimental. Note that GLES requires libxml2-python to generate some of its sources.
Diffstat (limited to 'src/mapi')
-rw-r--r--src/mapi/glapi/SConscript5
-rw-r--r--src/mapi/glapi/glapi.h5
-rw-r--r--src/mapi/shared-glapi/SConscript116
3 files changed, 121 insertions, 5 deletions
diff --git a/src/mapi/glapi/SConscript b/src/mapi/glapi/SConscript
index 4057991ec8..276b216024 100644
--- a/src/mapi/glapi/SConscript
+++ b/src/mapi/glapi/SConscript
@@ -17,6 +17,11 @@ if env['platform'] != 'winddk':
'_GDI32_', # prevent gl* being declared __declspec(dllimport) in MS headers
'BUILD_GL32', # declare gl* as __declspec(dllexport) in Mesa headers
])
+ if env['gles']:
+ env.Append(CPPDEFINES = ['_GLAPI_DLL_EXPORTS'])
+ else:
+ # prevent _glapi_* from being declared __declspec(dllimport)
+ env.Append(CPPDEFINES = ['_GLAPI_NO_EXPORTS'])
env.Append(CPPPATH = [
'#/src/mapi',
diff --git a/src/mapi/glapi/glapi.h b/src/mapi/glapi/glapi.h
index 8cca50487c..e909cf892a 100644
--- a/src/mapi/glapi/glapi.h
+++ b/src/mapi/glapi/glapi.h
@@ -45,11 +45,6 @@
#define _GLAPI_H
-/* opengl.dll does not export _glapi_* */
-#if defined(_WIN32)
-#define _GLAPI_NO_EXPORTS
-#endif
-
#ifdef _GLAPI_NO_EXPORTS
# define _GLAPI_EXPORT
#else /* _GLAPI_NO_EXPORTS */
diff --git a/src/mapi/shared-glapi/SConscript b/src/mapi/shared-glapi/SConscript
new file mode 100644
index 0000000000..b7c43a7347
--- /dev/null
+++ b/src/mapi/shared-glapi/SConscript
@@ -0,0 +1,116 @@
+#######################################################################
+# SConscript for shared-glapi/es1api/es2api
+
+from sys import executable as python_cmd
+
+Import('*')
+
+def mapi_objects(env, printer, mode):
+ """Return mapi objects built for the given printer and mode."""
+ mapi_sources = {
+ 'glapi': ['entry.c', 'mapi_glapi.c', 'stub.c', 'table.c',
+ 'u_current.c', 'u_execmem.c', 'u_thread.c'],
+ 'bridge': ['entry.c'],
+ }
+ mapi_defines = {
+ 'glapi': ['MAPI_MODE_GLAPI'],
+ 'bridge': ['MAPI_MODE_BRIDGE'],
+ }
+
+ header_name = '%s-tmp.h' % (printer)
+
+ # generate ABI header
+ header = env.CodeGenerate(
+ target = header_name,
+ script = '../mapi/mapi_abi.py',
+ source = '../glapi/gen/gl_and_es_API.xml',
+ command = python_cmd + ' $SCRIPT ' + \
+ '--printer %s --mode lib $SOURCE > $TARGET' % (printer),
+ )
+
+ cpppath = [
+ header[0].dir,
+ '#/include',
+ '#/src/mapi',
+ ]
+
+ cppdefines = mapi_defines[mode] + [
+ 'MAPI_ABI_HEADER=\\"%s\\"' % (header_name),
+ ]
+
+ if env['platform'] == 'windows':
+ if mode == 'glapi':
+ cppdefines += [
+ '_GLAPI_DLL_EXPORTS', # declare _glapi_* as __declspec(dllexport) in glapi.h
+ ]
+ else:
+ cppdefines += [
+ '_GDI32_', # prevent gl* being declared __declspec(dllimport) in MS headers
+ 'BUILD_GL32', # declare gl* as __declspec(dllexport) in Mesa headers
+ ]
+
+ objects = []
+ for s in mapi_sources[mode]:
+ o = env.SharedObject(
+ target = '%s-%s' % (printer, s[:-2]),
+ source = '../mapi/' + s,
+ CPPPATH = cpppath,
+ CPPDEFINES = cppdefines,
+ )
+ objects.append(o[0])
+
+ env.Depends(objects, header)
+
+ return objects
+
+if env['platform'] != 'winddk':
+ env = env.Clone()
+
+ env['SHLIBPREFIX'] = 'lib'
+ env['LIBPREFIX'] = 'lib'
+
+ shared_glapi_objects = mapi_objects(env, 'shared-glapi', 'glapi')
+ shared_glapi = env.SharedLibrary(
+ target = 'glapi',
+ source = shared_glapi_objects,
+ )
+
+ # manually add LIBPREFIX on windows
+ if env['platform'] == 'windows':
+ libs = ['libglapi']
+ else:
+ libs = ['glapi']
+
+ es1api_objects = mapi_objects(env, 'es1api', 'bridge')
+ es1api = env.SharedLibrary(
+ target = 'GLESv1_CM',
+ source = es1api_objects,
+ LIBPATH = ['.'],
+ LIBS = libs,
+ )
+
+ es2api_objects = mapi_objects(env, 'es2api', 'bridge')
+ es2api = env.SharedLibrary(
+ target = 'GLESv2',
+ source = es2api_objects,
+ LIBPATH = ['.'],
+ LIBS = libs,
+ )
+
+ env.InstallSharedLibrary(shared_glapi, version=(0, 0, 0))
+ env.InstallSharedLibrary(es1api, version=(1, 0, 0))
+ env.InstallSharedLibrary(es2api, version=(2, 0, 0))
+
+ if env['platform'] == 'windows':
+ shared_glapi = env.FindIxes(shared_glapi, 'LIBPREFIX', 'LIBSUFFIX')
+ else:
+ shared_glapi = env.FindIxes(shared_glapi, 'SHLIBPREFIX', 'SHLIBSUFFIX')
+
+ # build glapi bridge as a convenience libarary for libgl-xlib/libgl-gdi
+ bridge_glapi_objects = mapi_objects(env, 'glapi', 'bridge')
+ bridge_glapi = env.ConvenienceLibrary(
+ target = 'glapi_bridge',
+ source = bridge_glapi_objects,
+ )
+
+ Export(['shared_glapi', 'bridge_glapi'])