Added new WEGL extensions.

src/renderer_gl.cpp

@@ -417,6 +417,7 @@ namespace bgfx { namespace gl
 			EXT_blend_color,
 			EXT_blend_minmax,
 			EXT_blend_subtract,
+			EXT_color_buffer_half_float,
 			EXT_compressed_ETC1_RGB8_sub_texture,
 			EXT_debug_label,
 			EXT_debug_marker,
@@ -491,10 +492,12 @@ namespace bgfx { namespace gl
 			OES_vertex_half_float,
 			OES_vertex_type_10_10_10_2,
 
+			WEBGL_color_buffer_float,
 			WEBGL_compressed_texture_etc1,
 			WEBGL_compressed_texture_s3tc,
 			WEBGL_compressed_texture_pvrtc,
 			WEBGL_depth_texture,
+			WEBGL_draw_buffers,
 
 			WEBKIT_EXT_texture_filter_anisotropic,
 			WEBKIT_WEBGL_compressed_texture_s3tc,
@@ -578,6 +581,7 @@ namespace bgfx { namespace gl
 		{ "EXT_blend_color",                       BGFX_CONFIG_RENDERER_OPENGL >= 31, true  },
 		{ "EXT_blend_minmax",                      BGFX_CONFIG_RENDERER_OPENGL >= 14, true  },
 		{ "EXT_blend_subtract",                    BGFX_CONFIG_RENDERER_OPENGL >= 14, true  },
+		{ "EXT_color_buffer_half_float",           false,                             true  }, // GLES2 extension.
 		{ "EXT_compressed_ETC1_RGB8_sub_texture",  false,                             true  }, // GLES2 extension.
 		{ "EXT_debug_label",                       false,                             true  },
 		{ "EXT_debug_marker",                      false,                             true  },
@@ -652,10 +656,12 @@ namespace bgfx { namespace gl
 		{ "OES_vertex_half_float",                 false,                             true  },
 		{ "OES_vertex_type_10_10_10_2",            false,                             true  },
 
+		{ "WEBGL_color_buffer_float",              false,                             true  },
 		{ "WEBGL_compressed_texture_etc1",         false,                             true  },
 		{ "WEBGL_compressed_texture_s3tc",         false,                             true  },
 		{ "WEBGL_compressed_texture_pvrtc",        false,                             true  },
 		{ "WEBGL_depth_texture",                   false,                             true  },
+		{ "WEBGL_draw_buffers",                    false,                             true  },
 
 		{ "WEBKIT_EXT_texture_filter_anisotropic", false,                             true  },
 		{ "WEBKIT_WEBGL_compressed_texture_s3tc",  false,                             true  },
@@ -1294,7 +1300,8 @@ namespace bgfx { namespace gl
 
 			if (BX_ENABLED(BGFX_CONFIG_RENDERER_OPENGL)
 			||  BX_ENABLED(BGFX_CONFIG_RENDERER_OPENGLES >= 30)
-			||  s_extension[Extension::EXT_draw_buffers].m_supported)
+			||  s_extension[Extension::EXT_draw_buffers  ].m_supported
+			||  s_extension[Extension::WEBGL_draw_buffers].m_supported)
 			{
 				g_caps.maxFBAttachments = bx::uint32_min(glGet(GL_MAX_COLOR_ATTACHMENTS), BGFX_CONFIG_MAX_FRAME_BUFFER_ATTACHMENTS);
 			}
@@ -3794,7 +3801,10 @@ namespace bgfx { namespace gl
 
 					if (usesFragData)
 					{
-						BX_WARN(s_extension[Extension::EXT_draw_buffers].m_supported, "EXT_draw_buffers is used but not supported by GLES2 driver.");
+						BX_WARN(s_extension[Extension::EXT_draw_buffers  ].m_supported
+							||  s_extension[Extension::WEBGL_draw_buffers].m_supported
+							, "EXT_draw_buffers is used but not supported by GLES2 driver."
+							);
 						writeString(&writer
 							, "#extension GL_EXT_draw_buffers : enable\n"
 							);