# Copyright (C) 2012 Intel Corporation # # Permission is hereby granted, free of charge, to any person obtaining a # copy of this software and associated documentation files (the "Software"), # to deal in the Software without restriction, including without limitation # the rights to use, copy, modify, merge, publish, distribute, sublicense, # and/or sell copies of the Software, and to permit persons to whom the # Software is furnished to do so, subject to the following conditions: # # The above copyright notice and this permission notice (including the next # paragraph) shall be included in all copies or substantial portions of the # Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL # THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS # IN THE SOFTWARE. # This script generates the file api_exec.c, which contains # _mesa_initialize_exec_table(). It is responsible for populating all # entries in the "exec" dispatch table that aren't dynamic. import argparse import collections import license import gl_XML import sys import apiexec exec_flavor_map = { 'dynamic': None, 'mesa': '_mesa_', 'skip': None, } header = """/** * \\file api_exec.c * Initialize dispatch table. */ #include "main/accum.h" #include "main/api_loopback.h" #include "main/api_exec.h" #include "main/arbprogram.h" #include "main/atifragshader.h" #include "main/attrib.h" #include "main/blend.h" #include "main/blit.h" #include "main/bufferobj.h" #include "main/arrayobj.h" #include "main/bbox.h" #include "main/buffers.h" #include "main/clear.h" #include "main/clip.h" #include "main/colortab.h" #include "main/compute.h" #include "main/condrender.h" #include "main/context.h" #include "main/convolve.h" #include "main/copyimage.h" #include "main/depth.h" #include "main/debug_output.h" #include "main/dlist.h" #include "main/drawpix.h" #include "main/drawtex.h" #include "main/rastpos.h" #include "main/enable.h" #include "main/errors.h" #include "main/es1_conversion.h" #include "main/eval.h" #include "main/externalobjects.h" #include "main/get.h" #include "main/glspirv.h" #include "main/feedback.h" #include "main/fog.h" #include "main/fbobject.h" #include "main/framebuffer.h" #include "main/genmipmap.h" #include "main/hint.h" #include "main/histogram.h" #include "main/imports.h" #include "main/light.h" #include "main/lines.h" #include "main/matrix.h" #include "main/multisample.h" #include "main/objectlabel.h" #include "main/objectpurge.h" #include "main/performance_monitor.h" #include "main/performance_query.h" #include "main/pipelineobj.h" #include "main/pixel.h" #include "main/pixelstore.h" #include "main/points.h" #include "main/polygon.h" #include "main/program_resource.h" #include "main/querymatrix.h" #include "main/queryobj.h" #include "main/readpix.h" #include "main/samplerobj.h" #include "main/scissor.h" #include "main/stencil.h" #include "main/texenv.h" #include "main/texgetimage.h" #include "main/teximage.h" #include "main/texgen.h" #include "main/texobj.h" #include "main/texparam.h" #include "main/texstate.h" #include "main/texstorage.h" #include "main/barrier.h" #include "main/texturebindless.h" #include "main/textureview.h" #include "main/transformfeedback.h" #include "main/mtypes.h" #include "main/varray.h" #include "main/viewport.h" #include "main/shaderapi.h" #include "main/shaderimage.h" #include "main/uniforms.h" #include "main/syncobj.h" #include "main/formatquery.h" #include "main/dispatch.h" #include "main/vdpau.h" #include "vbo/vbo.h" /** * Initialize a context's exec table with pointers to Mesa's supported * GL functions. * * This function depends on ctx->Version. * * \param ctx GL context to which \c exec belongs. */ void _mesa_initialize_exec_table(struct gl_context *ctx) { struct _glapi_table *exec; exec = ctx->Exec; assert(exec != NULL); assert(ctx->Version > 0); vbo_initialize_exec_dispatch(ctx, exec); """ footer = """ } """ class PrintCode(gl_XML.gl_print_base): def __init__(self): gl_XML.gl_print_base.__init__(self) self.name = 'gl_genexec.py' self.license = license.bsd_license_template % ( 'Copyright (C) 2012 Intel Corporation', 'Intel Corporation') def printRealHeader(self): print header def printRealFooter(self): print footer def printBody(self, api): # Collect SET_* calls by the condition under which they should # be called. settings_by_condition = collections.defaultdict(lambda: []) for f in api.functionIterateAll(): if f.exec_flavor not in exec_flavor_map: raise Exception( 'Unrecognized exec flavor {0!r}'.format(f.exec_flavor)) condition_parts = [] if f.name in apiexec.functions: ex = apiexec.functions[f.name] unconditional_count = 0 if ex.compatibility is not None: condition_parts.append('ctx->API == API_OPENGL_COMPAT') unconditional_count += 1 if ex.core is not None: condition_parts.append('ctx->API == API_OPENGL_CORE') unconditional_count += 1 if ex.es1 is not None: condition_parts.append('ctx->API == API_OPENGLES') unconditional_count += 1 if ex.es2 is not None: if ex.es2 > 20: condition_parts.append('(ctx->API == API_OPENGLES2 && ctx->Version >= {0})'.format(ex.es2)) else: condition_parts.append('ctx->API == API_OPENGLES2') unconditional_count += 1 # If the function is unconditionally available in all four # APIs, then it is always available. Replace the complex # tautology condition with "true" and let GCC do the right # thing. if unconditional_count == 4: condition_parts = ['true'] else: if f.desktop: if f.deprecated: condition_parts.append('ctx->API == API_OPENGL_COMPAT') else: condition_parts.append('_mesa_is_desktop_gl(ctx)') if 'es1' in f.api_map: condition_parts.append('ctx->API == API_OPENGLES') if 'es2' in f.api_map: if f.api_map['es2'] > 2.0: condition_parts.append('(ctx->API == API_OPENGLES2 && ctx->Version >= {0})'.format(int(f.api_map['es2'] * 10))) else: condition_parts.append('ctx->API == API_OPENGLES2') if not condition_parts: # This function does not exist in any API. continue condition = ' || '.join(condition_parts) prefix = exec_flavor_map[f.exec_flavor] if prefix is None: # This function is not implemented, or is dispatched # dynamically. continue if f.has_no_error_variant: no_error_condition = '_mesa_is_no_error_enabled(ctx) && ({0})'.format(condition) error_condition = '!_mesa_is_no_error_enabled(ctx) && ({0})'.format(condition) settings_by_condition[no_error_condition].append( 'SET_{0}(exec, {1}{0}_no_error);'.format(f.name, prefix, f.name)) settings_by_condition[error_condition].append( 'SET_{0}(exec, {1}{0});'.format(f.name, prefix, f.name)) else: settings_by_condition[condition].append( 'SET_{0}(exec, {1}{0});'.format(f.name, prefix, f.name)) # Print out an if statement for each unique condition, with # the SET_* calls nested inside it. for condition in sorted(settings_by_condition.keys()): print ' if ({0}) {{'.format(condition) for setting in sorted(settings_by_condition[condition]): print ' {0}'.format(setting) print ' }' def _parser(): """Parse arguments and return namespace.""" parser = argparse.ArgumentParser() parser.add_argument('-f', dest='filename', default='gl_and_es_API.xml', help='an xml file describing an API') return parser.parse_args() def main(): """Main function.""" args = _parser() printer = PrintCode() api = gl_XML.parse_GL_API(args.filename) printer.Print(api) if __name__ == '__main__': main()