from classes.Feature import * class Extension: suffixes = [ \ "AMD", \ "APPLE", \ "ARB", \ "ATI", \ "EXT", \ "GREMEDY", \ "IBM", \ "IMG", \ "INGR", \ "INTEL", \ "KHR", \ "NV", \ "OES", \ "OML", \ "PGI", \ "QCOM", \ "SGIS", \ "SGIX", \ "VIV", \ "WEBGL", \ "WIN"] def __init__(self, xml, api): self.name = xml.attrib["name"] # e.g., GL_ARB_compute_variable_group_size self.supported = xml.attrib["supported"] # e.g., gl, gles2, gl|glcore self.incore = None # the lates feature by which all requires are in core self.api = api if api in xml.attrib["supported"].split("|") else None self.reqEnums = [] self.reqCommands = [] self.reqEnumStrings = [] self.reqCommandStrings = [] for require in xml.findall("require"): if "api" in require.attrib and require.attrib["api"] != api: continue for child in require: if child.tag == "enum": self.reqEnumStrings.append(child.attrib["name"]) elif child.tag == "command": self.reqCommandStrings.append(child.attrib["name"]) def __str__(self): return "Extension (%s)" % (self.name) def __lt__(self, other): return self.name < other.name # currently there are extensions without requirements tagged as (none) def isNone(self): return len(self.enums) == 0 and len(self.commands) == 0 def suffixFreeEnumName(enum): i = enum.name.rfind("_") if i > 0 and enum.name[i + 1:] in Extension.suffixes: return enum.name[:i] return enum.name def parseExtensions(xml, features, api): extensions = [] for E in xml.iter("extensions"): # only parse extension if # (1) supported apis includes requested api for extension in E.findall("extension"): # enforce constraint (1) if "supported" in extension.attrib and \ api not in extension.attrib["supported"].split("|"): continue extensions.append(Extension(extension, api)) # ToDo: there might be none requiring extensions return sorted(extensions) def resolveExtensions(extensions, enumsByName, commandsByName, features, api): for ext in extensions: ext.reqEnums = [enumsByName[e] for e in ext.reqEnumStrings] ext.reqCommands = [commandsByName[c] for c in ext.reqCommandStrings] if api != "gl": return # resolve incore # ToDo: several automated approaches were tested, none of which # resulted in correct, specification matching mapping. featuresByNumber = dict([(feature.number, feature) for feature in features]) extensionsByName = dict([(extension.name, extension) for extension in extensions]) mapping = { "3.0" : [ "GL_ARB_map_buffer_range", # "GL_APPLE_flush_buffer_range" "GL_ARB_vertex_array_object", # "GL_APPLE_vertex_array_object", "GL_ARB_color_buffer_float", "GL_ARB_depth_buffer_float", "GL_ARB_framebuffer_object", "GL_ARB_framebuffer_sRGB", "GL_ARB_half_float_pixel", "GL_ARB_texture_compression_rgtc", "GL_ARB_texture_float", "GL_ARB_texture_rg", "GL_EXT_draw_buffers2", "GL_EXT_framebuffer_blit", "GL_EXT_framebuffer_multisample", "GL_EXT_gpu_shader4", "GL_EXT_packed_depth_stencil", "GL_EXT_packed_float", "GL_EXT_texture_array", "GL_EXT_texture_integer", "GL_EXT_texture_shared_exponent", # "GL_EXT_transform_feedback", "GL_NV_transform_feedback", "GL_NV_conditional_render", "GL_NV_half_float", # "GL_ARB_half_float_vertex" # ? ], "3.1" : [ "GL_ARB_copy_buffer", "GL_ARB_draw_instanced", "GL_ARB_texture_buffer_object", "GL_ARB_texture_rectangle", "GL_ARB_texture_snorm", # "GL_EXT_texture_snorm", # ? "GL_ARB_uniform_buffer_object", "GL_NV_primitive_restart" ], "3.2": [ "GL_ARB_depth_clamp", "GL_ARB_draw_elements_base_vertex", "GL_ARB_fragment_coord_conventions", "GL_ARB_geometry_shader4", "GL_ARB_provoking_vertex", "GL_ARB_seamless_cube_map", "GL_ARB_sync", "GL_ARB_texture_multisample", "GL_ARB_vertex_array_bgra", "GL_EXT_vertex_array_bgra" # ? ], "3.3": [ "GL_ARB_blend_func_extended", "GL_ARB_explicit_attrib_location", "GL_ARB_instanced_arrays", "GL_ARB_occlusion_query2", "GL_ARB_sampler_objects", "GL_ARB_texture_rgb10_a2ui", "GL_ARB_texture_swizzle", "GL_ARB_timer_query", "GL_ARB_vertex_type_2_10_10_10_rev" ], "4.0": [ "GL_ARB_draw_buffers_blend", "GL_ARB_draw_indirect", "GL_ARB_gpu_shader5", "GL_ARB_gpu_shader_fp64", "GL_ARB_sample_shading", "GL_ARB_shader_subroutine", "GL_ARB_tessellation_shader", "GL_ARB_texture_buffer_object_rgb32", "GL_ARB_texture_cube_map_array", "GL_ARB_texture_gather", "GL_ARB_texture_query_lod", "GL_ARB_transform_feedback2", "GL_ARB_transform_feedback3" ], "4.1": [ "GL_ARB_ES2_compatibility", "GL_ARB_get_program_binary", "GL_ARB_separate_shader_objects", "GL_ARB_shader_precision", "GL_ARB_vertex_attrib_64bit", "GL_ARB_viewport_array" ], "4.2": [ "GL_ARB_base_instance", "GL_ARB_compressed_texture_pixel_storage", "GL_ARB_conservative_depth", "GL_ARB_internalformat_query", "GL_ARB_map_buffer_alignment", "GL_ARB_robustness", "GL_ARB_shader_atomic_counters", "GL_ARB_shader_image_load_store", "GL_ARB_shading_language_420pack", "GL_ARB_texture_compression_bptc", "GL_ARB_texture_storage", "GL_ARB_transform_feedback_instanced" ], "4.3": [ "GL_ARB_arrays_of_arrays", "GL_ARB_clear_buffer_object", "GL_ARB_compute_shader", "GL_ARB_copy_image", "GL_ARB_debug_group", "GL_ARB_debug_label", #"GL_EXT_debug_label", # ? "GL_ARB_debug_output", #"GL_KHR_debug_output", # ? "GL_ARB_debug_output2", "GL_ARB_ES3_compatibility", "GL_ARB_explicit_uniform_location", "GL_ARB_framebuffer_no_attachments", "GL_ARB_internalformat_query2", "GL_ARB_invalidate_subdata", "GL_ARB_multi_draw_indirect", "GL_ARB_program_interface_query", "GL_ARB_shader_image_size", "GL_ARB_shader_storage_buffer_object", "GL_ARB_stencil_texturing", "GL_ARB_texture_buffer_range", "GL_ARB_texture_storage_multisample", "GL_ARB_texture_view", "GL_ARB_vertex_attrib_binding", "GL_ARB_texture_query_levels", "GL_ARB_fragment_layer_viewport", "GL_ARB_robust_buffer_access_behavior" ], "4.4": [ "GL_ARB_buffer_storage", "GL_ARB_clear_texture", "GL_ARB_enhanced_layouts", "GL_ARB_multi_bind", "GL_ARB_query_buffer_object", "GL_ARB_texture_mirror_clamp_to_edge", "GL_ARB_texture_stencil8", "GL_ARB_vertex_type_10f_11f_11f_rev" ], "4.5": [ "GL_ARB_clip_control", "GL_ARB_cull_distance", "GL_ARB_ES3_1_compatibility", "GL_ARB_conditional_render_inverted", "GL_KHR_context_flush_control", "GL_ARB_derivative_control", "GL_ARB_direct_state_access", "GL_ARB_get_texture_sub_image", "GL_KHR_robustness", "GL_ARB_shader_texture_image_samples", "GL_ARB_texture_barrier" ] } for version, exts in mapping.items(): for ext in exts: if ext in extensionsByName: extensionsByName[ext].incore = featuresByNumber[version]