187    ctx->Extensions.dummy_false = false;  in initialize_context_to_defaults()
188    ctx->Extensions.dummy_true = true;  in initialize_context_to_defaults()
189    ctx->Extensions.ARB_compute_shader = true;  in initialize_context_to_defaults()
190    ctx->Extensions.ARB_compute_variable_group_size = true;  in initialize_context_to_defaults()
191    ctx->Extensions.ARB_conservative_depth = true;  in initialize_context_to_defaults()
192    ctx->Extensions.ARB_draw_instanced = true;  in initialize_context_to_defaults()
193    ctx->Extensions.ARB_ES2_compatibility = true;  in initialize_context_to_defaults()
194    ctx->Extensions.ARB_ES3_compatibility = true;  in initialize_context_to_defaults()
195    ctx->Extensions.ARB_explicit_attrib_location = true;  in initialize_context_to_defaults()
196    ctx->Extensions.ARB_fragment_coord_conventions = true;  in initialize_context_to_defaults()
197    ctx->Extensions.ARB_fragment_layer_viewport = true;  in initialize_context_to_defaults()
198    ctx->Extensions.ARB_gpu_shader5 = true;  in initialize_context_to_defaults()
199    ctx->Extensions.ARB_gpu_shader_fp64 = true;  in initialize_context_to_defaults()
200    ctx->Extensions.ARB_gpu_shader_int64 = true;  in initialize_context_to_defaults()
201    ctx->Extensions.ARB_sample_shading = true;  in initialize_context_to_defaults()
202    ctx->Extensions.ARB_shader_bit_encoding = true;  in initialize_context_to_defaults()
203    ctx->Extensions.ARB_shader_draw_parameters = true;  in initialize_context_to_defaults()
204    ctx->Extensions.ARB_shader_stencil_export = true;  in initialize_context_to_defaults()
205    ctx->Extensions.ARB_shader_texture_lod = true;  in initialize_context_to_defaults()
206    ctx->Extensions.ARB_shading_language_420pack = true;  in initialize_context_to_defaults()
207    ctx->Extensions.ARB_shading_language_packing = true;  in initialize_context_to_defaults()
208    ctx->Extensions.ARB_tessellation_shader = true;  in initialize_context_to_defaults()
209    ctx->Extensions.ARB_texture_cube_map_array = true;  in initialize_context_to_defaults()
210    ctx->Extensions.ARB_texture_gather = true;  in initialize_context_to_defaults()
211    ctx->Extensions.ARB_texture_multisample = true;  in initialize_context_to_defaults()
212    ctx->Extensions.ARB_texture_query_levels = true;  in initialize_context_to_defaults()
213    ctx->Extensions.ARB_texture_query_lod = true;  in initialize_context_to_defaults()
214    ctx->Extensions.ARB_uniform_buffer_object = true;  in initialize_context_to_defaults()
215    ctx->Extensions.ARB_viewport_array = true;  in initialize_context_to_defaults()
216    ctx->Extensions.ARB_cull_distance = true;  in initialize_context_to_defaults()
217    ctx->Extensions.ARB_bindless_texture = true;  in initialize_context_to_defaults()
219    ctx->Extensions.OES_EGL_image_external = true;  in initialize_context_to_defaults()
220    ctx->Extensions.OES_standard_derivatives = true;  in initialize_context_to_defaults()
222    ctx->Extensions.EXT_gpu_shader4 = true;  in initialize_context_to_defaults()
223    ctx->Extensions.EXT_shader_integer_mix = true;  in initialize_context_to_defaults()
224    ctx->Extensions.EXT_texture_array = true;  in initialize_context_to_defaults()
226    ctx->Extensions.MESA_shader_integer_functions = true;  in initialize_context_to_defaults()
228    ctx->Extensions.NV_texture_rectangle = true;  in initialize_context_to_defaults()