Merge pull request godotengine#16687 from karroffel/gles2-2d-pr

add GLES 2 renderer for 2D

SConstruct

@@ -145,7 +145,7 @@ opts = Variables(customs, ARGUMENTS)
 
 # Target build options
 opts.Add('arch', "Platform-dependent architecture (arm/arm64/x86/x64/mips/etc)", '')
-opts.Add(EnumVariable('bits', "Target platform bits", 'default', ('default', '32', '64')))
+opts.Add(EnumVariable('bits', "Target platform bits", 'default', ('default', '32', '64', 'fat')))
 opts.Add('p', "Platform (alias for 'platform')", '')
 opts.Add('platform', "Target platform (%s)" % ('|'.join(platform_list), ), '')
 opts.Add(EnumVariable('target', "Compilation target", 'debug', ('debug', 'release_debug', 'release')))
@@ -161,11 +161,11 @@ opts.Add(BoolVariable('xml', "XML format support for resources", True))
 
 # Advanced options
 opts.Add(BoolVariable('disable_3d', "Disable 3D nodes for smaller executable", False))
-opts.Add(BoolVariable('disable_advanced_gui', "Disable advanced 3D gui nodes and behaviors", False))
+opts.Add(BoolVariable('disable_advanced_gui', "Disable advance 3D gui nodes and behaviors", False))
 opts.Add('extra_suffix', "Custom extra suffix added to the base filename of all generated binary files", '')
 opts.Add('unix_global_settings_path', "UNIX-specific path to system-wide settings. Currently only used for templates", '')
 opts.Add(BoolVariable('verbose', "Enable verbose output for the compilation", False))
-opts.Add(BoolVariable('vsproj', "Generate Visual Studio Project", False))
+opts.Add(BoolVariable('vsproj', "Generate Visual Studio Project.", False))
 opts.Add(EnumVariable('warnings', "Set the level of warnings emitted during compilation", 'no', ('extra', 'all', 'moderate', 'no')))
 opts.Add(BoolVariable('progress', "Show a progress indicator during build", True))
 opts.Add(BoolVariable('dev', "If yes, alias for verbose=yes warnings=all", False))
@@ -353,7 +353,6 @@ if selected_platform in platform_list:
             env.Append(CCFLAGS=['-Wall', '-Wno-unused'])
         else: # 'no'
             env.Append(CCFLAGS=['-w'])
-        env.Append(CCFLAGS=['-Werror=return-type'])
 
     #env['platform_libsuffix'] = env['LIBSUFFIX']
 
@@ -383,6 +382,8 @@ if selected_platform in platform_list:
         suffix += ".32"
     elif (env["bits"] == "64"):
         suffix += ".64"
+    elif (env["bits"] == "fat"):
+        suffix += ".fat"
 
     suffix += env.extra_suffix
 
@@ -445,7 +446,8 @@ if selected_platform in platform_list:
         methods.no_verbose(sys, env)
 
     if (not env["platform"] == "server"): # FIXME: detect GLES3
-        env.Append( BUILDERS = { 'GLES3_GLSL' : env.Builder(action = methods.build_gles3_headers, suffix = 'glsl.gen.h',src_suffix = '.glsl') } )
+        env.Append( BUILDERS = { 'GLES3_GLSL' : env.Builder(action = methods.build_gles3_headers, suffix = 'glsl.gen.h', src_suffix = '.glsl') } )
+        env.Append( BUILDERS = { 'GLES2_GLSL' : env.Builder(action = methods.build_gles2_headers, suffix = 'glsl.gen.h', src_suffix = '.glsl') } )
 
     scons_cache_path = os.environ.get("SCONS_CACHE")
     if scons_cache_path != None:

drivers/SCsub

@@ -24,6 +24,7 @@ if env['xaudio2']:
 # Graphics drivers
 if (env["platform"] != "server"):
     SConscript('gles3/SCsub')
+    SConscript('gles2/SCsub')
     SConscript('gl_context/SCsub')
 else:
     SConscript('dummy/SCsub')

drivers/gles2/SCsub

@@ -0,0 +1,7 @@
+#!/usr/bin/env python
+
+Import('env')
+
+env.add_source_files(env.drivers_sources,"*.cpp")
+
+SConscript("shaders/SCsub")