Implement WEBGL_compressed_texture_es3_0 extension for WebGL 1/2

gpu/command_buffer/build_gles2_cmd_buffer.py

 #!/usr/bin/env python
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """code generator for GLES2 command buffers."""
 
 import itertools
 import os
 import os.path
@@ skipping 793 matching lines @@
     ],
     'invalid': [
       'GL_NONE',
     ],
   },
   'CompressedTextureFormat': {
     'type': 'GLenum',
     'valid': [
     ],
     'valid_es3': [
-      'GL_COMPRESSED_R11_EAC',
-      'GL_COMPRESSED_SIGNED_R11_EAC',
-      'GL_COMPRESSED_RG11_EAC',
-      'GL_COMPRESSED_SIGNED_RG11_EAC',
-      'GL_COMPRESSED_RGB8_ETC2',
-      'GL_COMPRESSED_SRGB8_ETC2',
-      'GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2',
-      'GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2',
-      'GL_COMPRESSED_RGBA8_ETC2_EAC',
-      'GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC',
     ],
   },
   'GLState': {
     'type': 'GLenum',
     'valid': [
       # NOTE: State an Capability entries added later.
       'GL_ACTIVE_TEXTURE',
       'GL_ALIASED_LINE_WIDTH_RANGE',
       'GL_ALIASED_POINT_SIZE_RANGE',
       'GL_ALPHA_BITS',
@@ skipping 1280 matching lines @@
       'GL_RGB10_A2UI',
       'GL_RGBA16UI',
       'GL_RGBA16I',
       'GL_RGBA32UI',
       'GL_RGBA32I',
       'GL_DEPTH_COMPONENT16',
       'GL_DEPTH_COMPONENT24',
       'GL_DEPTH_COMPONENT32F',
       'GL_DEPTH24_STENCIL8',
       'GL_DEPTH32F_STENCIL8',
-      'GL_COMPRESSED_R11_EAC',
-      'GL_COMPRESSED_SIGNED_R11_EAC',
-      'GL_COMPRESSED_RG11_EAC',
-      'GL_COMPRESSED_SIGNED_RG11_EAC',
-      'GL_COMPRESSED_RGB8_ETC2',
-      'GL_COMPRESSED_SRGB8_ETC2',
-      'GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2',
-      'GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2',
-      'GL_COMPRESSED_RGBA8_ETC2_EAC',
-      'GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC',
     ],
     'deprecated_es3': [
       'GL_ALPHA8_EXT',
       'GL_LUMINANCE8_EXT',
       'GL_LUMINANCE8_ALPHA8_EXT',
       'GL_ALPHA16F_EXT',
       'GL_LUMINANCE16F_EXT',
       'GL_LUMINANCE_ALPHA16F_EXT',
       'GL_ALPHA32F_EXT',
       'GL_LUMINANCE32F_EXT',
@@ skipping 157 matching lines @@
       'GL_OBJECT_TYPE',
       'GL_SYNC_CONDITION',
       'GL_SYNC_FLAGS',
     ],
     'invalid': [
       'GL_SYNC_FENCE',
     ],
   },
 }
 
+_ES30_COMPRESSED_TEXTURE_FORMATS = [
+  'GL_COMPRESSED_R11_EAC',
+  'GL_COMPRESSED_SIGNED_R11_EAC',
+  'GL_COMPRESSED_RG11_EAC',
+  'GL_COMPRESSED_SIGNED_RG11_EAC',
+  'GL_COMPRESSED_RGB8_ETC2',
+  'GL_COMPRESSED_SRGB8_ETC2',
+  'GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2',
+  'GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2',
+  'GL_COMPRESSED_RGBA8_ETC2_EAC',
+  'GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC',
+]
+
 # This table specifies the different pepper interfaces that are supported for
 # GL commands. 'dev' is true if it's a dev interface.
 _PEPPER_INTERFACES = [
   {'name': '', 'dev': False},
   {'name': 'InstancedArrays', 'dev': False},
   {'name': 'FramebufferBlit', 'dev': False},
   {'name': 'FramebufferMultisample', 'dev': False},
   {'name': 'ChromiumEnableFeature', 'dev': False},
   {'name': 'ChromiumMapSub', 'dev': False},
   {'name': 'Query', 'dev': False},
@@ skipping 8611 matching lines @@
           f.write(code % {
             'name': ToUnderscore(name),
           })
         if named_type.GetValidValuesES3():
           code = """  %(name)s.AddValues(
       valid_%(name)s_table_es3, arraysize(valid_%(name)s_table_es3));
 """
           f.write(code % {
             'name': ToUnderscore(name),
           })
+      f.write("UpdateES30CompressedTextureFormats();");
+      f.write("}\n\n");
+
+      f.write("void Validators::UpdateES30CompressedTextureFormats() {\n")
+      for name in ['CompressedTextureFormat', 'TextureInternalFormatStorage']:
+        for fmt in _ES30_COMPRESSED_TEXTURE_FORMATS:
+          code = """  %(name)s.AddValue(%(format)s);
+"""
+          f.write(code % {
+            'name': ToUnderscore(name),
+            'format': fmt,
+          })
       f.write("}\n\n");
     self.generated_cpp_filenames.append(filename)
 
   def WriteCommonUtilsHeader(self, filename):
     """Writes the gles2 common utility header."""
     with CHeaderWriter(filename) as f:
       type_infos = sorted(_NAMED_TYPE_INFO.keys())
       for type_info in type_infos:
         if _NAMED_TYPE_INFO[type_info]['type'] == 'GLenum':
           f.write("static std::string GetString%s(uint32_t value);\n" %
@@ skipping 42 matching lines @@
       enums = sorted(_NAMED_TYPE_INFO.keys())
       for enum in enums:
         if _NAMED_TYPE_INFO[enum]['type'] == 'GLenum':
           f.write("std::string GLES2Util::GetString%s(uint32_t value) {\n" %
                      enum)
           valid_list = _NAMED_TYPE_INFO[enum]['valid']
           if 'valid_es3' in _NAMED_TYPE_INFO[enum]:
             for es3_enum in _NAMED_TYPE_INFO[enum]['valid_es3']:
               if not es3_enum in valid_list:
                 valid_list.append(es3_enum)
+          if enum in [
+              'CompressedTextureFormat',
+              'TextureInternalFormatStorage',
+            ]:
+            for es3_enum in _ES30_COMPRESSED_TEXTURE_FORMATS:
+              valid_list.append(es3_enum)
           assert len(valid_list) == len(set(valid_list))
           if len(valid_list) > 0:
             f.write("  static const EnumToString string_table[] = {\n")
             for value in valid_list:
               f.write('    { %s, "%s" },\n' % (value, value))
             f.write("""  };
   return GLES2Util::GetQualifiedEnumString(
       string_table, arraysize(string_table), value);
 }
 
@@ skipping 301 matching lines @@
   Format(gen.generated_cpp_filenames)
 
   if gen.errors > 0:
     print "%d errors" % gen.errors
     return 1
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))