st/mesa: enable GL_ATI_fragment_shader

Signed-off-by: Miklós Máté <mtmkls@gmail.com>
Signed-off-by: Marek Olšák <marek.olsak@amd.com>

docs/relnotes/11.3.0.html

@@ -48,6 +48,7 @@ Note: some of the new features are only available with certain drivers.
 <li>GL_ARB_shader_atomic_counter_ops on nvc0</li>
 <li>GL_ARB_shader_image_load_store on radeonsi</li>
 <li>GL_ARB_shader_image_size on radeonsi</li>
+<li>GL_ATI_fragment_shader on all Gallium drivers</li>
 <li>GL_OES_texture_border_clamp and GL_EXT_texture_border_clamp on all drivers that support GL_ARB_texture_border_clamp</li>
 <li>GL_OES_shader_image_atomic on all drivers that support GL_ARB_shader_image_load_store</li>
 </ul>

src/mesa/state_tracker/st_extensions.c

@@ -810,6 +810,7 @@ void st_init_extensions(struct pipe_screen *screen,
    extensions->EXT_texture_env_dot3 = GL_TRUE;
    extensions->EXT_vertex_array_bgra = GL_TRUE;
 
+   extensions->ATI_fragment_shader = GL_TRUE;
    extensions->ATI_texture_env_combine3 = GL_TRUE;
 
    extensions->MESA_pack_invert = GL_TRUE;