progs/gallium/python: New home for python statetracker scripts.

6 files changed, 1585 insertions, 0 deletions

diff --git a/progs/gallium/python/retrace/README b/progs/gallium/python/retrace/README
new file mode 100644
index 0000000000..822cd11404
--- /dev/null
+++ b/progs/gallium/python/retrace/README
@@ -0,0 +1,17 @@
+This is an application written in python to replay the traces captured by the
+ trace pipe driver. 
+
+
+To use it follow the instructions in src/gallium/drivers/trace/README and
+src/gallium/state_trackers/python/README, and then do
+
+  python src/gallium/state_trackers/python/samples/retrace/interpreter.py filename.trace
+
+
+This is still work in progress:
+- not everything is captured/replayed
+  - surface/textures contents
+- any tiny error will result in a crash
+
+--
+Jose Fonseca <jrfonseca@tungstengraphics.com>
diff --git a/progs/gallium/python/retrace/format.py b/progs/gallium/python/retrace/format.py
new file mode 100755
index 0000000000..a4285bfe07
--- /dev/null
+++ b/progs/gallium/python/retrace/format.py
@@ -0,0 +1,173 @@
+#!/usr/bin/env python
+##########################################################################
+#
+# Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+# All Rights Reserved.
+#
+# 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, sub license, 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 NON-INFRINGEMENT.
+# IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
+#
+##########################################################################
+
+
+import sys
+
+
+class Formatter:
+    '''Plain formatter'''
+
+    def __init__(self, stream):
+        self.stream = stream
+
+    def text(self, text):
+        self.stream.write(text)
+
+    def newline(self):
+        self.text('\n')
+
+    def function(self, name):
+        self.text(name)
+
+    def variable(self, name):
+        self.text(name)
+
+    def literal(self, value):
+        self.text(str(value))
+
+    def address(self, addr):
+        self.text(str(addr))
+
+
+class AnsiFormatter(Formatter):
+    '''Formatter for plain-text files which outputs ANSI escape codes. See
+    http://en.wikipedia.org/wiki/ANSI_escape_code for more information
+    concerning ANSI escape codes.
+    '''
+
+    _csi = '\33['
+
+    _normal = '0m'
+    _bold = '1m'
+    _italic = '3m'
+    _red = '31m'
+    _green = '32m'
+    _blue = '34m'
+
+    def _escape(self, code):
+        self.text(self._csi + code)
+
+    def function(self, name):
+        self._escape(self._bold)
+        Formatter.function(self, name)
+        self._escape(self._normal)
+
+    def variable(self, name):
+        self._escape(self._italic)
+        Formatter.variable(self, name)
+        self._escape(self._normal)
+
+    def literal(self, value):
+        self._escape(self._blue)
+        Formatter.literal(self, value)
+        self._escape(self._normal)
+
+    def address(self, value):
+        self._escape(self._green)
+        Formatter.address(self, value)
+        self._escape(self._normal)
+
+
+class WindowsConsoleFormatter(Formatter):
+    '''Formatter for the Windows Console. See 
+    http://code.activestate.com/recipes/496901/ for more information.
+    '''
+
+    STD_INPUT_HANDLE  = -10
+    STD_OUTPUT_HANDLE = -11
+    STD_ERROR_HANDLE  = -12
+
+    FOREGROUND_BLUE      = 0x01
+    FOREGROUND_GREEN     = 0x02
+    FOREGROUND_RED       = 0x04
+    FOREGROUND_INTENSITY = 0x08
+    BACKGROUND_BLUE      = 0x10
+    BACKGROUND_GREEN     = 0x20
+    BACKGROUND_RED       = 0x40
+    BACKGROUND_INTENSITY = 0x80
+
+    _normal = FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED
+    _bold = FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED | FOREGROUND_INTENSITY
+    _italic = FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED
+    _red = FOREGROUND_RED | FOREGROUND_INTENSITY
+    _green = FOREGROUND_GREEN | FOREGROUND_INTENSITY
+    _blue = FOREGROUND_BLUE | FOREGROUND_INTENSITY
+
+    def __init__(self, stream):
+        Formatter.__init__(self, stream)
+
+        if stream is sys.stdin:
+            nStdHandle = self.STD_INPUT_HANDLE
+        elif stream is sys.stdout:
+            nStdHandle = self.STD_OUTPUT_HANDLE
+        elif stream is sys.stderr:
+            nStdHandle = self.STD_ERROR_HANDLE
+        else:
+            nStdHandle = None
+
+        if nStdHandle:
+            import ctypes
+            self.handle = ctypes.windll.kernel32.GetStdHandle(nStdHandle)
+        else:
+            self.handle = None
+
+    def _attribute(self, attr):
+        if self.handle:
+            import ctypes
+            ctypes.windll.kernel32.SetConsoleTextAttribute(self.handle, attr)
+
+    def function(self, name):
+        self._attribute(self._bold)
+        Formatter.function(self, name)
+        self._attribute(self._normal)
+
+    def variable(self, name):
+        self._attribute(self._italic)
+        Formatter.variable(self, name)
+        self._attribute(self._normal)
+
+    def literal(self, value):
+        self._attribute(self._blue)
+        Formatter.literal(self, value)
+        self._attribute(self._normal)
+
+    def address(self, value):
+        self._attribute(self._green)
+        Formatter.address(self, value)
+        self._attribute(self._normal)
+
+
+def DefaultFormatter(stream):
+    if sys.platform in ('linux2', 'cygwin'):
+        return AnsiFormatter(stream)
+    elif sys.platform in ('win32',):
+        return WindowsConsoleFormatter(stream)
+    else:
+        return Formatter(stream)
+
diff --git a/progs/gallium/python/retrace/interpreter.py b/progs/gallium/python/retrace/interpreter.py
new file mode 100755
index 0000000000..7277701279
--- /dev/null
+++ b/progs/gallium/python/retrace/interpreter.py
@@ -0,0 +1,756 @@
+#!/usr/bin/env python
+##########################################################################
+# 
+# Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+# All Rights Reserved.
+# 
+# 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, sub license, 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 NON-INFRINGEMENT.
+# IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
+# 
+##########################################################################
+
+
+import sys
+import struct
+
+import gallium
+import model
+import parse as parser
+
+
+try:
+    from struct import unpack_from
+except ImportError:
+    def unpack_from(fmt, buf, offset=0):
+        size = struct.calcsize(fmt)
+        return struct.unpack(fmt, buf[offset:offset + size])
+
+
+def make_image(surface, x=None, y=None, w=None, h=None):
+    if x is None:
+        x = 0
+    if y is None:
+        y = 0
+    if w is None:
+        w = surface.width - x
+    if h is None:
+        h = surface.height - y
+    data = surface.get_tile_rgba8(x, y, surface.width, surface.height)
+
+    import Image
+    outimage = Image.fromstring('RGBA', (w, h), data, "raw", 'RGBA', 0, 1)
+    return outimage
+
+def save_image(filename, surface, x=None, y=None, w=None, h=None):
+    outimage = make_image(surface, x, y, w, h)
+    outimage.save(filename, "PNG")
+
+def show_image(surface, title, x=None, y=None, w=None, h=None):
+    outimage = make_image(surface, x, y, w, h)
+    
+    import Tkinter as tk
+    from PIL import Image, ImageTk
+    root = tk.Tk()
+    
+    root.title(title)
+    
+    image1 = ImageTk.PhotoImage(outimage)
+    w = image1.width()
+    h = image1.height()
+    x = 100
+    y = 100
+    root.geometry("%dx%d+%d+%d" % (w, h, x, y))
+    panel1 = tk.Label(root, image=image1)
+    panel1.pack(side='top', fill='both', expand='yes')
+    panel1.image = image1
+    root.mainloop()
+
+
+class Struct:
+    """C-like struct"""
+
+    # A basic Python class can pass as a C-like structure
+    pass
+
+
+struct_factories = {
+    "pipe_blend_color": gallium.BlendColor,
+    "pipe_blend_state": gallium.Blend,
+    #"pipe_clip_state": gallium.Clip,
+    #"pipe_buffer": gallium.Buffer,
+    "pipe_depth_state": gallium.Depth,
+    "pipe_stencil_state": gallium.Stencil,
+    "pipe_alpha_state": gallium.Alpha,
+    "pipe_depth_stencil_alpha_state": gallium.DepthStencilAlpha,
+    #"pipe_framebuffer_state": gallium.Framebuffer,
+    "pipe_poly_stipple": gallium.PolyStipple,
+    "pipe_rasterizer_state": gallium.Rasterizer,
+    "pipe_sampler_state": gallium.Sampler,
+    "pipe_scissor_state": gallium.Scissor,
+    #"pipe_shader_state": gallium.Shader,
+    #"pipe_vertex_buffer": gallium.VertexBuffer,
+    "pipe_vertex_element": gallium.VertexElement,
+    "pipe_viewport_state": gallium.Viewport,
+    #"pipe_texture": gallium.Texture,
+}
+
+
+member_array_factories = {
+    #"pipe_rasterizer_state": {"sprite_coord_mode": gallium.ByteArray},                          
+    "pipe_poly_stipple": {"stipple": gallium.UnsignedArray},                          
+    "pipe_viewport_state": {"scale": gallium.FloatArray, "translate": gallium.FloatArray},                          
+    #"pipe_clip_state": {"ucp": gallium.FloatArray},
+    "pipe_depth_stencil_alpha_state": {"stencil": gallium.StencilArray},
+    "pipe_blend_color": {"color": gallium.FloatArray},
+    "pipe_sampler_state": {"border_color": gallium.FloatArray},              
+}
+
+
+class Translator(model.Visitor):
+    """Translate model arguments into regular Python objects"""
+
+    def __init__(self, interpreter):
+        self.interpreter = interpreter
+        self.result = None
+
+    def visit(self, node):
+        self.result = None
+        node.visit(self)
+        return self.result
+        
+    def visit_literal(self, node):
+        self.result = node.value
+    
+    def visit_named_constant(self, node):
+        # lookup the named constant in the gallium module
+        self.result = getattr(gallium, node.name)
+    
+    def visit_array(self, node):
+        array = []
+        for element in node.elements:
+            array.append(self.visit(element))
+        self.result = array
+    
+    def visit_struct(self, node):
+        struct_factory = struct_factories.get(node.name, Struct)
+        struct = struct_factory()
+        for member_name, member_node in node.members:
+            member_value = self.visit(member_node)
+            try:
+                array_factory = member_array_factories[node.name][member_name]
+            except KeyError:
+                pass
+            else:
+                assert isinstance(member_value, list)
+                array = array_factory(len(member_value))
+                for i in range(len(member_value)):
+                    array[i] = member_value[i]
+                member_value = array
+            #print node.name, member_name, member_value
+            assert isinstance(struct, Struct) or hasattr(struct, member_name)
+            setattr(struct, member_name, member_value)
+        self.result = struct
+    
+    def visit_pointer(self, node):
+        self.result = self.interpreter.lookup_object(node.address)
+
+
+class Object:
+    
+    def __init__(self, interpreter, real):
+        self.interpreter = interpreter
+        self.real = real
+        
+
+class Global(Object):
+
+    def __init__(self, interpreter, real):
+        self.interpreter = interpreter
+        self.real = real
+        
+    def pipe_winsys_create(self):
+        return Winsys(self.interpreter, gallium.Device())
+
+    def pipe_screen_create(self, winsys=None):
+        if winsys is None:
+            real = gallium.Device()
+        else:
+            real = winsys.real
+        return Screen(self.interpreter, real)
+    
+    def pipe_context_create(self, screen):
+        context = screen.real.context_create()
+        return Context(self.interpreter, context)
+
+    
+class Winsys(Object):
+    
+    def __init__(self, interpreter, real):
+        self.interpreter = interpreter
+        self.real = real
+
+    def get_name(self):
+        pass
+    
+    def user_buffer_create(self, data, size):
+        # We don't really care to distinguish between user and regular buffers
+        buffer = self.real.buffer_create(size, 
+                                         4, 
+                                         gallium.PIPE_BUFFER_USAGE_CPU_READ |
+                                         gallium.PIPE_BUFFER_USAGE_CPU_WRITE )
+        assert size == len(data)
+        buffer.write(data)
+        return buffer
+    
+    def buffer_create(self, alignment, usage, size):
+        return self.real.buffer_create(size, alignment, usage)
+    
+    def buffer_destroy(self, buffer):
+        pass
+    
+    def buffer_write(self, buffer, data, size):
+        assert size == len(data)
+        buffer.write(data)
+        
+    def fence_finish(self, fence, flags):
+        pass
+    
+    def fence_reference(self, dst, src):
+        pass
+    
+    def flush_frontbuffer(self, surface):
+        pass
+
+    def surface_alloc(self):
+        return None
+    
+    def surface_release(self, surface):
+        pass
+
+
+class Transfer:
+
+    def __init__(self, surface, x, y, w, h):
+        self.surface = surface
+        self.x = x
+        self.y = y
+        self.w = w
+        self.h = h
+
+
+class Screen(Object):
+    
+    def destroy(self):
+        pass
+
+    def get_name(self):
+        pass
+    
+    def get_vendor(self):
+        pass
+    
+    def get_param(self, param):
+        pass
+    
+    def get_paramf(self, param):
+        pass
+    
+    def is_format_supported(self, format, target, tex_usage, geom_flags):
+        return self.real.is_format_supported(format, target, tex_usage, geom_flags)
+    
+    def texture_create(self, templat):
+        return self.real.texture_create(
+            format = templat.format,
+            width = templat.width,
+            height = templat.height,
+            depth = templat.depth,
+            last_level = templat.last_level,
+            target = templat.target,
+            tex_usage = templat.tex_usage,
+        )
+
+    def texture_destroy(self, texture):
+        self.interpreter.unregister_object(texture)
+
+    def texture_release(self, surface):
+        pass
+
+    def get_tex_surface(self, texture, face, level, zslice, usage):
+        if texture is None:
+            return None
+        return texture.get_surface(face, level, zslice)
+    
+    def tex_surface_destroy(self, surface):
+        self.interpreter.unregister_object(surface)
+
+    def tex_surface_release(self, surface):
+        pass
+
+    def surface_write(self, surface, data, stride, size):
+        if surface is None:
+            return
+#        assert surface.nblocksy * stride == size 
+        surface.put_tile_raw(0, 0, surface.width, surface.height, data, stride)
+
+    def get_tex_transfer(self, texture, face, level, zslice, usage, x, y, w, h):
+        if texture is None:
+            return None
+        transfer = Transfer(texture.get_surface(face, level, zslice), x, y, w, h)
+        if transfer and usage & gallium.PIPE_TRANSFER_READ:
+            if self.interpreter.options.all:
+                self.interpreter.present(transfer.surface, 'transf_read', x, y, w, h)
+        return transfer
+    
+    def tex_transfer_destroy(self, transfer):
+        self.interpreter.unregister_object(transfer)
+
+    def transfer_write(self, transfer, stride, data, size):
+        if transfer is None:
+            return
+        transfer.surface.put_tile_raw(transfer.x, transfer.y, transfer.w, transfer.h, data, stride)
+        if self.interpreter.options.all:
+            self.interpreter.present(transfer.surface, 'transf_write', transfer.x, transfer.y, transfer.w, transfer.h)
+
+    def user_buffer_create(self, data, size):
+        # We don't really care to distinguish between user and regular buffers
+        buffer = self.real.buffer_create(size, 
+                                         4, 
+                                         gallium.PIPE_BUFFER_USAGE_CPU_READ |
+                                         gallium.PIPE_BUFFER_USAGE_CPU_WRITE )
+        assert size == len(data)
+        buffer.write(data)
+        return buffer
+    
+    def buffer_create(self, alignment, usage, size):
+        return self.real.buffer_create(size, alignment, usage)
+    
+    def buffer_destroy(self, buffer):
+        pass
+    
+    def buffer_write(self, buffer, data, size, offset=0):
+        assert size == len(data)
+        buffer.write(data)
+        
+    def fence_finish(self, fence, flags):
+        pass
+    
+    def fence_reference(self, dst, src):
+        pass
+    
+    def flush_frontbuffer(self, surface):
+        pass
+
+
+class Context(Object):
+    
+    def __init__(self, interpreter, real):
+        Object.__init__(self, interpreter, real)
+        self.cbufs = []
+        self.zsbuf = None
+        self.vbufs = []
+        self.velems = []
+        self.dirty = False
+
+    def destroy(self):
+        pass
+    
+    def create_blend_state(self, state):
+        return state
+
+    def bind_blend_state(self, state):
+        if state is not None:
+            self.real.set_blend(state)
+
+    def delete_blend_state(self, state):
+        pass
+    
+    def create_sampler_state(self, state):
+        return state
+
+    def delete_sampler_state(self, state):
+        pass
+
+    def bind_vertex_sampler_states(self, num_states, states):
+        for i in range(num_states):
+            self.real.set_vertex_sampler(i, states[i])
+        
+    def bind_fragment_sampler_states(self, num_states, states):
+        for i in range(num_states):
+            self.real.set_fragment_sampler(i, states[i])
+        
+    def create_rasterizer_state(self, state):
+        return state
+
+    def bind_rasterizer_state(self, state):
+        if state is not None:
+            self.real.set_rasterizer(state)
+        
+    def delete_rasterizer_state(self, state):
+        pass
+    
+    def create_depth_stencil_alpha_state(self, state):
+        return state
+
+    def bind_depth_stencil_alpha_state(self, state):
+        if state is not None:
+            self.real.set_depth_stencil_alpha(state)
+            
+    def delete_depth_stencil_alpha_state(self, state):
+        pass
+
+    def create_fs_state(self, state):
+        tokens = str(state.tokens)
+        shader = gallium.Shader(tokens)
+        return shader
+
+    create_vs_state = create_fs_state
+    
+    def bind_fs_state(self, state):
+        self.real.set_fragment_shader(state)
+        
+    def bind_vs_state(self, state):
+        self.real.set_vertex_shader(state)
+
+    def delete_fs_state(self, state):
+        pass
+
+    delete_vs_state = delete_fs_state
+
+    def set_blend_color(self, state):
+        self.real.set_blend_color(state)
+
+    def set_stencil_ref(self, state):
+        self.real.set_stencil_ref(state)
+
+    def set_clip_state(self, state):
+        _state = gallium.Clip()
+        _state.nr = state.nr
+        if state.nr:
+            # FIXME
+            ucp = gallium.FloatArray(gallium.PIPE_MAX_CLIP_PLANES*4)
+            for i in range(len(state.ucp)):
+                for j in range(len(state.ucp[i])):
+                    ucp[i*4 + j] = state.ucp[i][j]
+            _state.ucp = ucp
+        self.real.set_clip(_state)
+
+    def dump_constant_buffer(self, buffer):
+        if not self.interpreter.verbosity(2):
+            return
+
+        data = buffer.read()
+        format = '4f'
+        index = 0
+        for offset in range(0, len(data), struct.calcsize(format)):
+            x, y, z, w = unpack_from(format, data, offset)
+            sys.stdout.write('\tCONST[%2u] = {%10.4f, %10.4f, %10.4f, %10.4f}\n' % (index, x, y, z, w))
+            index += 1
+        sys.stdout.flush()
+
+    def set_constant_buffer(self, shader, index, buffer):
+        if buffer is not None:
+            self.real.set_constant_buffer(shader, index, buffer)
+
+            self.dump_constant_buffer(buffer)
+
+    def set_framebuffer_state(self, state):
+        _state = gallium.Framebuffer()
+        _state.width = state.width
+        _state.height = state.height
+        _state.nr_cbufs = state.nr_cbufs
+        for i in range(len(state.cbufs)):
+            _state.set_cbuf(i, state.cbufs[i])
+        _state.set_zsbuf(state.zsbuf)    
+        self.real.set_framebuffer(_state)
+        
+        self.cbufs = state.cbufs
+        self.zsbuf = state.zsbuf
+
+    def set_polygon_stipple(self, state):
+        self.real.set_polygon_stipple(state)
+
+    def set_scissor_state(self, state):
+        self.real.set_scissor(state)
+
+    def set_viewport_state(self, state):
+        self.real.set_viewport(state)
+
+    def set_fragment_sampler_textures(self, num_textures, textures):
+        for i in range(num_textures):
+            self.real.set_fragment_sampler_texture(i, textures[i])
+
+    def set_vertex_sampler_textures(self, num_textures, textures):
+        for i in range(num_textures):
+            self.real.set_vertex_sampler_texture(i, textures[i])
+
+    def set_vertex_buffers(self, num_buffers, buffers):
+        self.vbufs = buffers[0:num_buffers]
+        for i in range(num_buffers):
+            vbuf = buffers[i]
+            self.real.set_vertex_buffer(
+                i,
+                stride = vbuf.stride,
+                max_index = vbuf.max_index,
+                buffer_offset = vbuf.buffer_offset,
+                buffer = vbuf.buffer,
+            )
+
+    def set_vertex_elements(self, num_elements, elements):
+        self.velems = elements[0:num_elements]
+        for i in range(num_elements):
+            self.real.set_vertex_element(i, elements[i])
+        self.real.set_vertex_elements(num_elements)
+
+    def dump_vertices(self, start, count):
+        if not self.interpreter.verbosity(2):
+            return
+
+        for index in range(start, start + count):
+            if index >= start + 16:
+                sys.stdout.write('\t...\n')
+                break
+            sys.stdout.write('\t{\n')
+            for velem in self.velems:
+                vbuf = self.vbufs[velem.vertex_buffer_index]
+
+                offset = vbuf.buffer_offset + velem.src_offset + vbuf.stride*index
+                format = {
+                    gallium.PIPE_FORMAT_R32_FLOAT: 'f',
+                    gallium.PIPE_FORMAT_R32G32_FLOAT: '2f',
+                    gallium.PIPE_FORMAT_R32G32B32_FLOAT: '3f',
+                    gallium.PIPE_FORMAT_R32G32B32A32_FLOAT: '4f',
+                    gallium.PIPE_FORMAT_B8G8R8A8_UNORM: '4B',
+                    gallium.PIPE_FORMAT_R8G8B8A8_UNORM: '4B',
+                    gallium.PIPE_FORMAT_R16G16B16_SNORM: '3h',
+                }[velem.src_format]
+
+                data = vbuf.buffer.read()
+                values = unpack_from(format, data, offset)
+                sys.stdout.write('\t\t{' + ', '.join(map(str, values)) + '},\n')
+                assert len(values) == velem.nr_components
+            sys.stdout.write('\t},\n')
+        sys.stdout.flush()
+
+    def dump_indices(self, ibuf, isize, start, count):
+        if not self.interpreter.verbosity(2):
+            return
+
+        format = {
+            1: 'B',
+            2: 'H',
+            4: 'I',
+        }[isize]
+
+        assert struct.calcsize(format) == isize
+
+        data = ibuf.read()
+        maxindex, minindex = 0, 0xffffffff
+
+        sys.stdout.write('\t{\n')
+        for i in range(start, start + count):
+            if i >= start + 16:
+                sys.stdout.write('\t...\n')
+                break
+            offset = i*isize
+            index, = unpack_from(format, data, offset)
+            sys.stdout.write('\t\t%u,\n' % index)
+            minindex = min(minindex, index)
+            maxindex = max(maxindex, index)
+        sys.stdout.write('\t},\n')
+        sys.stdout.flush()
+
+        return minindex, maxindex
+
+    def draw_arrays(self, mode, start, count):
+        self.dump_vertices(start, count)
+            
+        self.real.draw_arrays(mode, start, count)
+        self._set_dirty()
+    
+    def draw_elements(self, indexBuffer, indexSize, mode, start, count):
+        if self.interpreter.verbosity(2):
+            minindex, maxindex = self.dump_indices(indexBuffer, indexSize, start, count)
+            self.dump_vertices(minindex, maxindex - minindex)
+
+        self.real.draw_elements(indexBuffer, indexSize, mode, start, count)
+        self._set_dirty()
+        
+    def draw_range_elements(self, indexBuffer, indexSize, minIndex, maxIndex, mode, start, count):
+        if self.interpreter.verbosity(2):
+            minindex, maxindex = self.dump_indices(indexBuffer, indexSize, start, count)
+            minindex = min(minindex, minIndex)
+            maxindex = min(maxindex, maxIndex)
+            self.dump_vertices(minindex, maxindex - minindex)
+
+        self.real.draw_range_elements(indexBuffer, indexSize, minIndex, maxIndex, mode, start, count)
+        self._set_dirty()
+        
+    def surface_copy(self, dest, destx, desty, src, srcx, srcy, width, height):
+        if dest is not None and src is not None:
+            if self.interpreter.options.all:
+                self.interpreter.present(src, 'surface_copy_src', srcx, srcy, width, height)
+            self.real.surface_copy(dest, destx, desty, src, srcx, srcy, width, height)
+            if dest in self.cbufs:
+                self._set_dirty()
+                flags = gallium.PIPE_FLUSH_FRAME
+            else:
+                flags = 0
+            self.flush(flags)
+            if self.interpreter.options.all:
+                self.interpreter.present(dest, 'surface_copy_dest', destx, desty, width, height)
+
+    def is_texture_referenced(self, texture, face, level):
+        #return self.real.is_texture_referenced(format, texture, face, level)
+        pass
+    
+    def is_buffer_referenced(self, buf):
+        #return self.real.is_buffer_referenced(format, buf)
+        pass
+    
+    def _set_dirty(self):
+        if self.interpreter.options.step:
+            self._present()
+        else:
+            self.dirty = True
+
+    def flush(self, flags):
+        self.real.flush(flags)
+        if self.dirty:
+            if flags & gallium.PIPE_FLUSH_FRAME:
+                self._present()
+            self.dirty = False
+        return None
+
+    def clear(self, buffers, rgba, depth, stencil):
+        _rgba = gallium.FloatArray(4)
+        for i in range(4):
+            _rgba[i] = rgba[i]
+        self.real.clear(buffers, _rgba, depth, stencil)
+        
+    def _present(self):
+        self.real.flush()
+    
+        if self.cbufs and self.cbufs[0]:
+            self.interpreter.present(self.cbufs[0], "cbuf")
+        if self.zsbuf:
+            if self.interpreter.options.all:
+                self.interpreter.present(self.zsbuf, "zsbuf")
+    
+
+class Interpreter(parser.TraceDumper):
+    
+    ignore_calls = set((
+            ('pipe_screen', 'is_format_supported'),
+            ('pipe_screen', 'get_param'),
+            ('pipe_screen', 'get_paramf'),
+    ))
+
+    def __init__(self, stream, options):
+        parser.TraceDumper.__init__(self, stream)
+        self.options = options
+        self.objects = {}
+        self.result = None
+        self.globl = Global(self, None)
+        self.call_no = None
+
+    def register_object(self, address, object):
+        self.objects[address] = object
+        
+    def unregister_object(self, object):
+        # FIXME:
+        pass
+
+    def lookup_object(self, address):
+        return self.objects[address]
+    
+    def interpret(self, trace):
+        for call in trace.calls:
+            self.interpret_call(call)
+
+    def handle_call(self, call):
+        if self.options.stop and call.no > self.options.stop:
+            sys.exit(0)
+
+        if (call.klass, call.method) in self.ignore_calls:
+            return
+
+        self.call_no = call.no
+
+        if self.verbosity(1):
+            parser.TraceDumper.handle_call(self, call)
+            sys.stdout.flush()
+        
+        args = [(str(name), self.interpret_arg(arg)) for name, arg in call.args] 
+        
+        if call.klass:
+            name, obj = args[0]
+            args = args[1:]
+        else:
+            obj = self.globl
+            
+        method = getattr(obj, call.method)
+        ret = method(**dict(args))
+        
+        if call.ret and isinstance(call.ret, model.Pointer):
+            if ret is None:
+                sys.stderr.write('warning: NULL returned\n')
+            self.register_object(call.ret.address, ret)
+
+        self.call_no = None
+
+    def interpret_arg(self, node):
+        translator = Translator(self)
+        return translator.visit(node)
+
+    def verbosity(self, level):
+        return self.options.verbosity >= level
+
+    def present(self, surface, description, x=None, y=None, w=None, h=None):
+        if self.call_no < self.options.start:
+            return
+
+        if self.options.images:
+            filename = '%04u_%s.png' % (self.call_no, description)
+            save_image(filename, surface, x, y, w, h)
+        else:
+            title = '%u. %s' % (self.call_no, description)
+            show_image(surface, title, x, y, w, h)
+    
+
+class Main(parser.Main):
+
+    def get_optparser(self):
+        optparser = parser.Main.get_optparser(self)
+        optparser.add_option("-q", "--quiet", action="store_const", const=0, dest="verbosity", help="no messages")
+        optparser.add_option("-v", "--verbose", action="count", dest="verbosity", default=1, help="increase verbosity level")
+        optparser.add_option("-i", "--images", action="store_true", dest="images", default=False, help="save images instead of showing them")
+        optparser.add_option("-a", "--all", action="store_true", dest="all", default=False, help="show depth, stencil, and transfers")
+        optparser.add_option("-s", "--step", action="store_true", dest="step", default=False, help="step trhough every draw")
+        optparser.add_option("-f", "--from", action="store", type="int", dest="start", default=0, help="from call no")
+        optparser.add_option("-t", "--to", action="store", type="int", dest="stop", default=0, help="until call no")
+        return optparser
+
+    def process_arg(self, stream, options):
+        parser = Interpreter(stream, options)
+        parser.parse()
+
+
+if __name__ == '__main__':
+    Main().main()
diff --git a/progs/gallium/python/retrace/model.py b/progs/gallium/python/retrace/model.py
new file mode 100755
index 0000000000..d4a079fb1e
--- /dev/null
+++ b/progs/gallium/python/retrace/model.py
@@ -0,0 +1,213 @@
+#!/usr/bin/env python
+##########################################################################
+# 
+# Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+# All Rights Reserved.
+# 
+# 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, sub license, 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 NON-INFRINGEMENT.
+# IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
+# 
+##########################################################################
+
+
+'''Trace data model.'''
+
+
+import sys
+import string
+import format
+
+try:
+    from cStringIO import StringIO
+except ImportError:
+    from StringIO import StringIO
+
+
+class Node:
+    
+    def visit(self, visitor):
+        raise NotImplementedError
+
+    def __str__(self):
+        stream = StringIO()
+        formatter = format.DefaultFormatter(stream)
+        pretty_printer = PrettyPrinter(formatter)
+        self.visit(pretty_printer)
+        return stream.getvalue()
+
+
+class Literal(Node):
+    
+    def __init__(self, value):
+        self.value = value
+
+    def visit(self, visitor):
+        visitor.visit_literal(self)
+
+
+class NamedConstant(Node):
+    
+    def __init__(self, name):
+        self.name = name
+
+    def visit(self, visitor):
+        visitor.visit_named_constant(self)
+    
+
+class Array(Node):
+    
+    def __init__(self, elements):
+        self.elements = elements
+
+    def visit(self, visitor):
+        visitor.visit_array(self)
+
+
+class Struct(Node):
+    
+    def __init__(self, name, members):
+        self.name = name
+        self.members = members        
+
+    def visit(self, visitor):
+        visitor.visit_struct(self)
+
+        
+class Pointer(Node):
+    
+    def __init__(self, address):
+        self.address = address
+
+    def visit(self, visitor):
+        visitor.visit_pointer(self)
+
+
+class Call:
+    
+    def __init__(self, no, klass, method, args, ret):
+        self.no = no
+        self.klass = klass
+        self.method = method
+        self.args = args
+        self.ret = ret
+        
+    def visit(self, visitor):
+        visitor.visit_call(self)
+
+
+class Trace:
+    
+    def __init__(self, calls):
+        self.calls = calls
+        
+    def visit(self, visitor):
+        visitor.visit_trace(self)
+    
+    
+class Visitor:
+    
+    def visit_literal(self, node):
+        raise NotImplementedError
+    
+    def visit_named_constant(self, node):
+        raise NotImplementedError
+    
+    def visit_array(self, node):
+        raise NotImplementedError
+    
+    def visit_struct(self, node):
+        raise NotImplementedError
+    
+    def visit_pointer(self, node):
+        raise NotImplementedError
+    
+    def visit_call(self, node):
+        raise NotImplementedError
+    
+    def visit_trace(self, node):
+        raise NotImplementedError
+
+
+class PrettyPrinter:
+
+    def __init__(self, formatter):
+        self.formatter = formatter
+    
+    def visit_literal(self, node):
+        if isinstance(node.value, basestring):
+            if len(node.value) >= 4096 or node.value.strip(string.printable):
+                self.formatter.text('...')
+                return
+
+            self.formatter.literal('"' + node.value + '"')
+            return
+
+        self.formatter.literal(repr(node.value))
+    
+    def visit_named_constant(self, node):
+        self.formatter.literal(node.name)
+    
+    def visit_array(self, node):
+        self.formatter.text('{')
+        sep = ''
+        for value in node.elements:
+            self.formatter.text(sep)
+            value.visit(self) 
+            sep = ', '
+        self.formatter.text('}')
+    
+    def visit_struct(self, node):
+        self.formatter.text('{')
+        sep = ''
+        for name, value in node.members:
+            self.formatter.text(sep)
+            self.formatter.variable(name)
+            self.formatter.text(' = ')
+            value.visit(self) 
+            sep = ', '
+        self.formatter.text('}')
+    
+    def visit_pointer(self, node):
+        self.formatter.address(node.address)
+    
+    def visit_call(self, node):
+        self.formatter.text('%s ' % node.no)
+        if node.klass is not None:
+            self.formatter.function(node.klass + '::' + node.method)
+        else:
+            self.formatter.function(node.method)
+        self.formatter.text('(')
+        sep = ''
+        for name, value in node.args:
+            self.formatter.text(sep)
+            self.formatter.variable(name)
+            self.formatter.text(' = ')
+            value.visit(self) 
+            sep = ', '
+        self.formatter.text(')')
+        if node.ret is not None:
+            self.formatter.text(' = ')
+            node.ret.visit(self)
+    
+    def visit_trace(self, node):
+        for call in node.calls:
+            call.visit(self)
+            self.formatter.newline()
+
diff --git a/progs/gallium/python/retrace/parse.py b/progs/gallium/python/retrace/parse.py
new file mode 100755
index 0000000000..b08d368671
--- /dev/null
+++ b/progs/gallium/python/retrace/parse.py
@@ -0,0 +1,392 @@
+#!/usr/bin/env python
+##########################################################################
+# 
+# Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+# All Rights Reserved.
+# 
+# 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, sub license, 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 NON-INFRINGEMENT.
+# IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
+# 
+##########################################################################
+
+
+import sys
+import xml.parsers.expat
+import binascii
+import optparse
+
+from model import *
+
+
+ELEMENT_START, ELEMENT_END, CHARACTER_DATA, EOF = range(4)
+
+
+class XmlToken:
+
+    def __init__(self, type, name_or_data, attrs = None, line = None, column = None):
+        assert type in (ELEMENT_START, ELEMENT_END, CHARACTER_DATA, EOF)
+        self.type = type
+        self.name_or_data = name_or_data
+        self.attrs = attrs
+        self.line = line
+        self.column = column
+
+    def __str__(self):
+        if self.type == ELEMENT_START:
+            return '<' + self.name_or_data + ' ...>'
+        if self.type == ELEMENT_END:
+            return '</' + self.name_or_data + '>'
+        if self.type == CHARACTER_DATA:
+            return self.name_or_data
+        if self.type == EOF:
+            return 'end of file'
+        assert 0
+
+
+class XmlTokenizer:
+    """Expat based XML tokenizer."""
+
+    def __init__(self, fp, skip_ws = True):
+        self.fp = fp
+        self.tokens = []
+        self.index = 0
+        self.final = False
+        self.skip_ws = skip_ws
+        
+        self.character_pos = 0, 0
+        self.character_data = ''
+        
+        self.parser = xml.parsers.expat.ParserCreate()
+        self.parser.StartElementHandler  = self.handle_element_start
+        self.parser.EndElementHandler    = self.handle_element_end
+        self.parser.CharacterDataHandler = self.handle_character_data
+    
+    def handle_element_start(self, name, attributes):
+        self.finish_character_data()
+        line, column = self.pos()
+        token = XmlToken(ELEMENT_START, name, attributes, line, column)
+        self.tokens.append(token)
+    
+    def handle_element_end(self, name):
+        self.finish_character_data()
+        line, column = self.pos()
+        token = XmlToken(ELEMENT_END, name, None, line, column)
+        self.tokens.append(token)
+
+    def handle_character_data(self, data):
+        if not self.character_data:
+            self.character_pos = self.pos()
+        self.character_data += data
+    
+    def finish_character_data(self):
+        if self.character_data:
+            if not self.skip_ws or not self.character_data.isspace(): 
+                line, column = self.character_pos
+                token = XmlToken(CHARACTER_DATA, self.character_data, None, line, column)
+                self.tokens.append(token)
+            self.character_data = ''
+    
+    def next(self):
+        size = 16*1024
+        while self.index >= len(self.tokens) and not self.final:
+            self.tokens = []
+            self.index = 0
+            data = self.fp.read(size)
+            self.final = len(data) < size
+            data = data.rstrip('\0')
+            try:
+                self.parser.Parse(data, self.final)
+            except xml.parsers.expat.ExpatError, e:
+                #if e.code == xml.parsers.expat.errors.XML_ERROR_NO_ELEMENTS:
+                if e.code == 3:
+                    pass
+                else:
+                    raise e
+        if self.index >= len(self.tokens):
+            line, column = self.pos()
+            token = XmlToken(EOF, None, None, line, column)
+        else:
+            token = self.tokens[self.index]
+            self.index += 1
+        return token
+
+    def pos(self):
+        return self.parser.CurrentLineNumber, self.parser.CurrentColumnNumber
+
+
+class TokenMismatch(Exception):
+
+    def __init__(self, expected, found):
+        self.expected = expected
+        self.found = found
+
+    def __str__(self):
+        return '%u:%u: %s expected, %s found' % (self.found.line, self.found.column, str(self.expected), str(self.found))
+
+
+
+class XmlParser:
+    """Base XML document parser."""
+
+    def __init__(self, fp):
+        self.tokenizer = XmlTokenizer(fp)
+        self.consume()
+    
+    def consume(self):
+        self.token = self.tokenizer.next()
+
+    def match_element_start(self, name):
+        return self.token.type == ELEMENT_START and self.token.name_or_data == name
+    
+    def match_element_end(self, name):
+        return self.token.type == ELEMENT_END and self.token.name_or_data == name
+
+    def element_start(self, name):
+        while self.token.type == CHARACTER_DATA:
+            self.consume()
+        if self.token.type != ELEMENT_START:
+            raise TokenMismatch(XmlToken(ELEMENT_START, name), self.token)
+        if self.token.name_or_data != name:
+            raise TokenMismatch(XmlToken(ELEMENT_START, name), self.token)
+        attrs = self.token.attrs
+        self.consume()
+        return attrs
+    
+    def element_end(self, name):
+        while self.token.type == CHARACTER_DATA:
+            self.consume()
+        if self.token.type != ELEMENT_END:
+            raise TokenMismatch(XmlToken(ELEMENT_END, name), self.token)
+        if self.token.name_or_data != name:
+            raise TokenMismatch(XmlToken(ELEMENT_END, name), self.token)
+        self.consume()
+
+    def character_data(self, strip = True):
+        data = ''
+        while self.token.type == CHARACTER_DATA:
+            data += self.token.name_or_data
+            self.consume()
+        if strip:
+            data = data.strip()
+        return data
+
+
+class TraceParser(XmlParser):
+
+    def __init__(self, fp):
+        XmlParser.__init__(self, fp)
+        self.last_call_no = 0
+    
+    def parse(self):
+        self.element_start('trace')
+        while self.token.type not in (ELEMENT_END, EOF):
+            call = self.parse_call()
+            self.handle_call(call)
+        if self.token.type != EOF:
+            self.element_end('trace')
+
+    def parse_call(self):
+        attrs = self.element_start('call')
+        try:
+            no = int(attrs['no'])
+        except KeyError:
+            self.last_call_no += 1
+            no = self.last_call_no
+        else:
+            self.last_call_no = no
+        klass = attrs['class']
+        method = attrs['method']
+        args = []
+        ret = None
+        while self.token.type == ELEMENT_START:
+            if self.token.name_or_data == 'arg':
+                arg = self.parse_arg()
+                args.append(arg)
+            elif self.token.name_or_data == 'ret':
+                ret = self.parse_ret()
+            elif self.token.name_or_data == 'call':
+                # ignore nested function calls
+                self.parse_call()
+            else:
+                raise TokenMismatch("<arg ...> or <ret ...>", self.token)
+        self.element_end('call')
+        
+        return Call(no, klass, method, args, ret)
+
+    def parse_arg(self):
+        attrs = self.element_start('arg')
+        name = attrs['name']
+        value = self.parse_value()
+        self.element_end('arg')
+
+        return name, value
+
+    def parse_ret(self):
+        attrs = self.element_start('ret')
+        value = self.parse_value()
+        self.element_end('ret')
+
+        return value
+
+    def parse_value(self):
+        expected_tokens = ('null', 'bool', 'int', 'uint', 'float', 'string', 'enum', 'array', 'struct', 'ptr', 'bytes')
+        if self.token.type == ELEMENT_START:
+            if self.token.name_or_data in expected_tokens:
+                method = getattr(self, 'parse_' +  self.token.name_or_data)
+                return method()
+        raise TokenMismatch(" or " .join(expected_tokens), self.token)
+
+    def parse_null(self):
+        self.element_start('null')
+        self.element_end('null')
+        return Literal(None)
+        
+    def parse_bool(self):
+        self.element_start('bool')
+        value = int(self.character_data())
+        self.element_end('bool')
+        return Literal(value)
+        
+    def parse_int(self):
+        self.element_start('int')
+        value = int(self.character_data())
+        self.element_end('int')
+        return Literal(value)
+        
+    def parse_uint(self):
+        self.element_start('uint')
+        value = int(self.character_data())
+        self.element_end('uint')
+        return Literal(value)
+        
+    def parse_float(self):
+        self.element_start('float')
+        value = float(self.character_data())
+        self.element_end('float')
+        return Literal(value)
+        
+    def parse_enum(self):
+        self.element_start('enum')
+        name = self.character_data()
+        self.element_end('enum')
+        return NamedConstant(name)
+        
+    def parse_string(self):
+        self.element_start('string')
+        value = self.character_data()
+        self.element_end('string')
+        return Literal(value)
+        
+    def parse_bytes(self):
+        self.element_start('bytes')
+        value = binascii.a2b_hex(self.character_data())
+        self.element_end('bytes')
+        return Literal(value)
+        
+    def parse_array(self):
+        self.element_start('array')
+        elems = []
+        while self.token.type != ELEMENT_END:
+            elems.append(self.parse_elem())
+        self.element_end('array')
+        return Array(elems)
+
+    def parse_elem(self):
+        self.element_start('elem')
+        value = self.parse_value()
+        self.element_end('elem')
+        return value
+
+    def parse_struct(self):
+        attrs = self.element_start('struct')
+        name = attrs['name']
+        members = []
+        while self.token.type != ELEMENT_END:
+            members.append(self.parse_member())
+        self.element_end('struct')
+        return Struct(name, members)
+
+    def parse_member(self):
+        attrs = self.element_start('member')
+        name = attrs['name']
+        value = self.parse_value()
+        self.element_end('member')
+
+        return name, value
+
+    def parse_ptr(self):
+        self.element_start('ptr')
+        address = self.character_data()
+        self.element_end('ptr')
+
+        return Pointer(address)
+
+    def handle_call(self, call):
+        pass
+    
+    
+class TraceDumper(TraceParser):
+    
+    def __init__(self, fp):
+        TraceParser.__init__(self, fp)
+        self.formatter = format.DefaultFormatter(sys.stdout)
+        self.pretty_printer = PrettyPrinter(self.formatter)
+
+    def handle_call(self, call):
+        call.visit(self.pretty_printer)
+        self.formatter.newline()
+        
+
+class Main:
+    '''Common main class for all retrace command line utilities.''' 
+
+    def __init__(self):
+        pass
+
+    def main(self):
+        optparser = self.get_optparser()
+        (options, args) = optparser.parse_args(sys.argv[1:])
+    
+        if args:
+            for arg in args:
+                if arg.endswith('.gz'):
+                    from gzip import GzipFile
+                    stream = GzipFile(arg, 'rt')
+                elif arg.endswith('.bz2'):
+                    from bz2 import BZ2File
+                    stream = BZ2File(arg, 'rU')
+                else:
+                    stream = open(arg, 'rt')
+                self.process_arg(stream, options)
+        else:
+            self.process_arg(stream, options)
+
+    def get_optparser(self):
+        optparser = optparse.OptionParser(
+            usage="\n\t%prog [options] [traces] ...")
+        return optparser
+
+    def process_arg(self, stream, options):
+        parser = TraceDumper(stream)
+        parser.parse()
+
+
+if __name__ == '__main__':
+    Main().main()
diff --git a/progs/gallium/python/retrace/parser.py b/progs/gallium/python/retrace/parser.py
new file mode 100755
index 0000000000..bd47c9a6b0
--- /dev/null
+++ b/progs/gallium/python/retrace/parser.py
@@ -0,0 +1,34 @@
+#!/usr/bin/env python
+##########################################################################
+# 
+# Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+# All Rights Reserved.
+# 
+# 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, sub license, 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 NON-INFRINGEMENT.
+# IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
+# 
+##########################################################################
+
+
+from parse import *
+
+
+if __name__ == '__main__':
+    Main().main()