mirror of
https://github.com/OpenFusionProject/scripts.git
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361 lines
10 KiB
Python
361 lines
10 KiB
Python
#!/usr/bin/env python
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# coding: utf-8
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# d3d9 to cg crude dissassembler
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# ycc 08/08/2022
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import re
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import sys
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legacy = False # True for 2.6
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reserved = {
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"_Time",
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"_SinTime",
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"_CosTime",
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"_ProjectionParams",
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"_PPLAmbient",
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"_ObjectSpaceCameraPos",
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"_ObjectSpaceLightPos0",
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"_ModelLightColor0",
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"_SpecularLightColor0",
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"_Light2World0", "_World2Light0", "_Object2World", "_World2Object", "_Object2Light0",
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"_LightDirectionBias",
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"_LightPositionRange",
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}
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decls = {
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"dcl_position": "float4 {0} = vdat.vertex;",
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"dcl_normal": "float4 {0} = float4(vdat.normal, 0);",
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"dcl_texcoord0": "float4 {0} = vdat.texcoord;",
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"dcl_texcoord1": "float4 {0} = vdat.texcoord1;",
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"dcl_color": "float4 {0} = vdat.color;",
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"dcl_2d": "; // no operation",
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"dcl": "float4 {0[0]}{0[1]} = pdat.{0[0]}{0[1]};",
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"def": "const float4 {0} = float4({1}, {2}, {3}, {4});",
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}
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ops = {
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"mov": "{0} = {1};",
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"add": "{0} = {1} + {2};",
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"mul": "{0} = {1} * {2};",
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"mad": "{0} = {1} * {2} + {3};",
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"dp4": "{0} = dot((float4){1}, (float4){2});",
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"dp3": "{0} = dot((float3){1}, (float3){2});",
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"min": "{0} = min({1}, {2});",
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"max": "{0} = max({1}, {2});",
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"rsq": "{0} = rsqrt({1});",
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"frc": "{0} = float4({1}.x - (float)floor({1}.x), {1}.y - (float)floor({1}.y), {1}.z - (float)floor({1}.z), {1}.w - (float)floor({1}.w));",
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"slt": "{0} = float4(({1}.x < {2}.x) ? 1.0f : 0.0f, ({1}.y < {2}.y) ? 1.0f : 0.0f, ({1}.z < {2}.z) ? 1.0f : 0.0f, ({1}.w < {2}.w) ? 1.0f : 0.0f);",
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"sge": "{0} = float4(({1}.x >= {2}.x) ? 1.0f : 0.0f, ({1}.y >= {2}.y) ? 1.0f : 0.0f, ({1}.z >= {2}.z) ? 1.0f : 0.0f, ({1}.w >= {2}.w) ? 1.0f : 0.0f);",
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"rcp": "{0} = ({1} == 0.0f) ? FLT_MAX : (({1} == 1.0f) ? {1} : (1 / {1}));",
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"texld": "{0} = tex2D({2}, (float2){1});",
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}
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struct_a2v = """struct a2v {
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\tfloat4 vertex : POSITION;
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\tfloat3 normal : NORMAL;
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\tfloat4 texcoord : TEXCOORD0;
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\tfloat4 texcoord1 : TEXCOORD1;
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\tfloat4 tangent : TANGENT;
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\tfloat4 color : COLOR;
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};
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"""
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v2f_postype = "POSITION" if legacy else "SV_POSITION"
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struct_v2f = f"""struct v2f {{
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\tfloat4 pos : {v2f_postype};
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\tfloat4 t0 : TEXCOORD0;
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\tfloat4 t1 : TEXCOORD1;
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\tfloat4 t2 : TEXCOORD2;
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\tfloat4 t3 : TEXCOORD3;
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\tfloat fog : FOG;
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\tfloat4 d0 : COLOR0;
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\tfloat4 d1 : COLOR1;
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}};
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"""
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struct_f2a = """struct f2a {
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\tfloat4 c0 : COLOR0;
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};
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"""
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cg_header = """CGPROGRAM
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#include "UnityCG.cginc"
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#pragma exclude_renderers xbox360 ps3 gles
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"""
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cg_footer = """ENDCG"""
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vertex_func = """v2f vert(a2v vdat) {{
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\tfloat4 r0, r1, r2, r3, r4;
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\tfloat4 tmp;
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\tv2f o;
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{0}
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\treturn o;
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}}
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"""
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fragment_func = """f2a frag(v2f pdat) {{
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\tfloat4 r0, r1, r2, r3, r4;
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\tfloat4 tmp;
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\tf2a o;
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{0}
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\treturn o;
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}}
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"""
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def process_header(prog):
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keywords = []
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loctab = {}
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locdecl = []
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binds = []
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i = 0
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lighting = False
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textures = 0
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while i < len(prog):
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line = prog[i]
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if line.startswith("Keywords"):
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keywords = re.findall("\"[\w\d]+\"", line)
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del prog[i]
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i = i - 1
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elif line.startswith("Bind"):
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binds.append(line)
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del prog[i]
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i = i - 1
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elif line.startswith("Local") or line.startswith("Matrix"):
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dec = line.split(' ')
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key = int(dec[1][:-1])
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if dec[2][0] == '[':
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# singleton
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val = dec[2][1:-1]
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if val[0] == '_' and val not in reserved:
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loctype = "float4" if dec[0] == "Local" else "float4x4"
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locdecl.append(f"{loctype} {val};")
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elif dec[2][0] == '(':
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#components
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vals = dec[2][1:-1].split(',')
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for j, v in enumerate(vals):
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if v[0] == '[':
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vals[j] = v[1:-1]
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if vals[j][0] == '_' and vals[j] not in reserved:
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locdecl.append(f"float {vals[j]};")
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val = f"float4({vals[0]},{vals[1]},{vals[2]},{vals[3]})"
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lightval = re.match("glstate_light(\d)_([a-zA-Z]+)", val)
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if lightval:
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val = f"glstate.light[{lightval[1]}].{lightval[2]}"
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lighting = True
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elif val == "_ObjectSpaceCameraPos" and not legacy:
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val = "mul(_World2Object, float4(_WorldSpaceCameraPos, 1.0f))"
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elif val == "_ObjectSpaceLightPos0" and not legacy:
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val = "mul(_World2Object, _WorldSpaceLightPos0)"
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lighting = True
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elif val == "glstate_lightmodel_ambient":
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val = "glstate.lightmodel.ambient"
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lighting = True
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elif val.startswith("glstate_matrix_texture"):
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val = f"glstate.matrix.texture[{val[-1]}]" if legacy else f"UNITY_MATRIX_TEXTURE{val[-1]}"
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elif val == "glstate_matrix_mvp":
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val = "glstate.matrix.mvp" if legacy else "UNITY_MATRIX_MVP"
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elif val == "glstate_matrix_modelview0":
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val = "glstate.matrix.modelview[0]" if legacy else "UNITY_MATRIX_MV"
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elif val == "glstate_matrix_transpose_modelview0":
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val = "glstate.matrix.transpose.modelview[0]" if legacy else "UNITY_MATRIX_T_MV"
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elif val == "glstate_matrix_invtrans_modelview0":
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val = "glstate.matrix.invtrans.modelview[0]" if legacy else "UNITY_MATRIX_IT_MV"
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elif val.startswith("glstate"):
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raise ValueError(f"Unrecognized glstate: {val}")
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if dec[0] == "Local":
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loctab[f"c{key}"] = val
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elif dec[0] == "Matrix":
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for offset in range(0,4):
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loctab[f"c{key + offset}"] = f"{val}[{offset}]"
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del prog[i]
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i = i - 1
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elif line.startswith("SetTexture"):
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dec = line.split(' ')
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if dec[2] != "{2D}":
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raise ValueError(f"Unknown texture type {dec[2]}")
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key = f"s{textures}"
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val = dec[1][1:-1]
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loctab[key] = val
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locdecl.append(f"sampler2D {val};")
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textures = textures + 1
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del prog[i]
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i = i - 1
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i = i + 1
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# print(loctab)
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return (keywords, loctab, locdecl, binds, lighting)
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def resolve_args(args, loctab, consts):
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for a in range(0, len(args)):
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arg = args[a]
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neg = ""
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if arg[0] == '-':
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arg = arg[1:]
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neg = "-"
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# save swizzler!
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dot = arg.find(".")
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if dot > -1:
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swiz = arg[dot:]
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arg = arg[:dot]
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else:
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swiz = ""
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if arg[0] == 'r':
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pass
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elif arg[0] == 'v':
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pass
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elif arg[0] == 't':
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pass
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elif arg[0] == 'c':
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if arg not in consts:
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arg = loctab[arg]
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elif arg[0] == 's':
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arg = loctab[arg]
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elif arg[0] == 'o':
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arg = f"o.{arg[1:].lower()}"
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elif re.match("[+-]?([0-9]*[.])?[0-9]+", arg):
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pass
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else:
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raise ValueError(f"Unknown arg {arg}")
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args[a] = neg + arg + swiz
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def decode(code, args):
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if code in decls:
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return [decls[code].format(*args)]
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elif code in ops:
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target = args[0]
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if target == "o.fog":
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return [ops[code].format(*args)]
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dot = re.search("\.[xyzw]+", target)
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if dot:
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swiz = target[dot.start()+1:]
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target = target[:dot.start()]
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else:
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swiz = "xyzw"
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lines = [ops[code].format("tmp", *args[1:])]
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for c in swiz:
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lines.append(f"{target}.{c} = tmp.{c};")
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return lines
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else:
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raise ValueError(f"Unknown opcode {code}")
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def process_asm(asm, loctab):
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shadertype = ""
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if asm[0] == "\"vs_1_1":
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shadertype = "vertex"
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elif asm[0] == "\"ps_2_0":
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shadertype = "fragment"
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else:
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raise ValueError(f"Unsupported shader type: {asm[0][1:]}")
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consts = set()
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translated = []
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i = 1
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while i < len(asm):
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instruction = asm[i]
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if instruction == "\"":
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break
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space = instruction.find(" ")
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if space == -1:
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code = instruction
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args = []
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else:
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code = instruction[:space]
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args = instruction[space+1:].split(", ")
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if code == "def":
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consts.add(args[0])
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pp = code.find("_pp")
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if pp > -1:
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code = code[:pp]
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resolve_args(args, loctab, consts)
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disasm = decode(code, args)
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# print(f"{instruction} \t==>\t{disasm}")
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disasm.insert(0, f"// {instruction}")
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translated.extend(disasm)
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i = i + 1
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return (shadertype, translated)
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def disassemble(blocks):
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shaders = {}
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keywords = set()
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locdecl = set()
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binds = set()
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lighting = False
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for block in blocks:
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asm = block.split('\n')[1:-1]
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(kw, ltab, ldecl, bds, light) = process_header(asm)
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keywords.update(kw)
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locdecl.update(ldecl)
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binds.update(bds)
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lighting |= light
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(shadertype, disasm) = process_asm(asm, ltab)
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shaders[shadertype] = disasm
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text = ""
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if len(binds) > 0:
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text += "BindChannels {\n"
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for b in binds:
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text += f"\t{b}\n"
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text += "}\n"
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if lighting:
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text += "Lighting On\n"
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text += cg_header
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if len(keywords) > 0:
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text += "#pragma multi_compile " + " ".join(keywords)
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if "vertex" in shaders:
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text += "#pragma vertex vert\n"
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if "fragment" in shaders:
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text += "#pragma fragment frag\n"
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text += "\n"
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if "vertex" in shaders:
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text += struct_a2v + "\n"
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text += struct_v2f + "\n"
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if "fragment" in shaders:
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text += struct_f2a + "\n"
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text += "\n".join(locdecl) + "\n"
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if "vertex" in shaders:
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text += "\n" + vertex_func.format("\t" + "\n\t".join(shaders["vertex"]))
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if "fragment" in shaders:
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text += "\n" + fragment_func.format("\t" + "\n\t".join(shaders["fragment"]))
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text += cg_footer
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return text
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if __name__ == "__main__":
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if len(sys.argv) < 2:
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print("Usage: disassembler.py <filename>")
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else:
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with open(sys.argv[1], "r") as fi:
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buf = fi.read()
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disasm = disassemble(buf.split('~'))
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print(disasm)
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