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