wined3d: Add EXT_texture_shared_exponent extension.

dlls/wined3d/directx.c

@@ -235,6 +235,7 @@ static const struct wined3d_extension_map gl_extension_map[] =
     {"GL_EXT_texture_integer",              EXT_TEXTURE_INTEGER           },
     {"GL_EXT_texture_lod_bias",             EXT_TEXTURE_LOD_BIAS          },
     {"GL_EXT_texture_mirror_clamp",         EXT_TEXTURE_MIRROR_CLAMP      },
+    {"GL_EXT_texture_shared_exponent",      EXT_TEXTURE_SHARED_EXPONENT   },
     {"GL_EXT_texture_snorm",                EXT_TEXTURE_SNORM             },
     {"GL_EXT_texture_sRGB",                 EXT_TEXTURE_SRGB              },
     {"GL_EXT_texture_sRGB_decode",          EXT_TEXTURE_SRGB_DECODE       },
@@ -3823,6 +3824,7 @@ static BOOL wined3d_adapter_init_gl_caps(struct wined3d_adapter *adapter,
         {EXT_PACKED_FLOAT,                 MAKEDWORD_VERSION(3, 0)},
         {EXT_TEXTURE_ARRAY,                MAKEDWORD_VERSION(3, 0)},
         {EXT_TEXTURE_INTEGER,              MAKEDWORD_VERSION(3, 0)},
+        {EXT_TEXTURE_SHARED_EXPONENT,      MAKEDWORD_VERSION(3, 0)},
         /* We don't want to enable EXT_GPU_SHADER4: even though similar
          * functionality is available in core GL 3.0 / GLSL 1.30, it's different
          * enough that reusing the same flag for the new features hurts more

dlls/wined3d/wined3d_gl.h

@@ -167,6 +167,7 @@ enum wined3d_gl_extension
     EXT_TEXTURE_INTEGER,
     EXT_TEXTURE_LOD_BIAS,
     EXT_TEXTURE_MIRROR_CLAMP,
+    EXT_TEXTURE_SHARED_EXPONENT,
     EXT_TEXTURE_SNORM,
     EXT_TEXTURE_SRGB,
     EXT_TEXTURE_SRGB_DECODE,