More renaming.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@1696 8ced0084-cf51-0410-be5f-012b33b47a6e

1 files changed, 512 insertions, 0 deletions

diff --git a/Source/Core/VideoCommon/Src/VertexShaderGen.cpp b/Source/Core/VideoCommon/Src/VertexShaderGen.cpp
new file mode 100644
index 0000000000..a3fdfc13f0
--- /dev/null
+++ b/Source/Core/VideoCommon/Src/VertexShaderGen.cpp
@@ -0,0 +1,512 @@
+// Copyright (C) 2003-2008 Dolphin Project.
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, version 2.0.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License 2.0 for more details.
+
+// A copy of the GPL 2.0 should have been included with the program.
+// If not, see http://www.gnu.org/licenses/
+
+// Official SVN repository and contact information can be found at
+// http://code.google.com/p/dolphin-emu/
+
+#include <math.h>
+
+#include "Profiler.h"
+#include "NativeVertexFormat.h"
+
+#include "BPMemory.h"
+#include "VertexShaderGen.h"
+
+// Mash together all the inputs that contribute to the code of a generated vertex shader into
+// a unique identifier, basically containing all the bits. Yup, it's a lot ....
+void GetVertexShaderId(VERTEXSHADERUID& vid, u32 components, u32 zbufrender)
+{
+	vid.values[0] = components |
+		(xfregs.numTexGens << 23) |
+		(xfregs.nNumChans << 27) |
+		((u32)xfregs.bEnableDualTexTransform << 29) |
+		(zbufrender << 30);
+
+	for (int i = 0; i < 2; ++i) {
+		vid.values[1+i] = xfregs.colChans[i].color.enablelighting ?
+			(u32)xfregs.colChans[i].color.hex :
+			(u32)xfregs.colChans[i].color.matsource;
+		vid.values[1+i] |= (xfregs.colChans[i].alpha.enablelighting ?
+			(u32)xfregs.colChans[i].alpha.hex :
+			(u32)xfregs.colChans[i].alpha.matsource) << 15;
+	}
+
+	// fog
+	vid.values[1] |= (((u32)bpmem.fog.c_proj_fsel.fsel & 3) << 30);
+	vid.values[2] |= (((u32)bpmem.fog.c_proj_fsel.fsel >> 2) << 30);
+
+	u32* pcurvalue = &vid.values[3];
+	for (int i = 0; i < xfregs.numTexGens; ++i) {
+		TexMtxInfo tinfo = xfregs.texcoords[i].texmtxinfo;
+		if (tinfo.texgentype != XF_TEXGEN_EMBOSS_MAP)
+			tinfo.hex &= 0x7ff;
+		if (tinfo.texgentype != XF_TEXGEN_REGULAR)
+			tinfo.projection = 0;
+
+		u32 val = ((tinfo.hex >> 1) & 0x1ffff);
+		if (xfregs.bEnableDualTexTransform && tinfo.texgentype == XF_TEXGEN_REGULAR) {
+			// rewrite normalization and post index
+			val |= ((u32)xfregs.texcoords[i].postmtxinfo.index << 17) | ((u32)xfregs.texcoords[i].postmtxinfo.normalize << 23);
+		}
+
+		switch (i & 3) {
+			case 0: pcurvalue[0] |= val; break;
+			case 1: pcurvalue[0] |= val << 24; pcurvalue[1] = val >> 8; ++pcurvalue; break;
+			case 2: pcurvalue[0] |= val << 16; pcurvalue[1] = val >> 16; ++pcurvalue; break;
+			case 3: pcurvalue[0] |= val << 8; ++pcurvalue; break;
+		}
+	}
+}
+
+static char text[16384];
+
+#define WRITE p+=sprintf
+
+#define LIGHTS_POS ""
+
+char *GenerateLightShader(char* p, int index, const LitChannel& chan, const char* dest, int coloralpha);
+
+const char *GenerateVertexShader(u32 components, bool has_zbuffer_target)
+{
+	text[sizeof(text) - 1] = 0x7C;  // canary
+    DVSTARTPROFILE();
+
+    _assert_( bpmem.genMode.numtexgens == xfregs.numTexGens);
+    _assert_( bpmem.genMode.numcolchans == xfregs.nNumChans);
+    
+    u32 lightMask = 0;
+    if (xfregs.nNumChans > 0)
+		lightMask |= xfregs.colChans[0].color.GetFullLightMask() | xfregs.colChans[0].alpha.GetFullLightMask();
+    if (xfregs.nNumChans > 1)
+        lightMask |= xfregs.colChans[1].color.GetFullLightMask() | xfregs.colChans[1].alpha.GetFullLightMask();
+
+    bool bOutputZ = bpmem.ztex2.op==ZTEXTURE_ADD || has_zbuffer_target;
+    int ztexcoord = -1;
+
+    char *p = text;
+    WRITE(p, "//Vertex Shader: comp:%x, \n", components);
+    WRITE(p, "typedef struct {\n"
+        "  float4 T0, T1, T2;\n"
+        "  float4 N0, N1, N2;\n"
+        "} s_"I_POSNORMALMATRIX";\n\n"
+        "typedef struct {\n"
+        "  float4 t;\n"
+        "} FLT4;\n"
+        "typedef struct {\n"
+        "  FLT4 T[24];\n"
+        "} s_"I_TEXMATRICES";\n\n"
+        "typedef struct {\n"
+        "  FLT4 T[64];\n"
+        "} s_"I_TRANSFORMMATRICES";\n\n"
+        "typedef struct {\n"
+        "  FLT4 T[32];\n"
+        "} s_"I_NORMALMATRICES";\n\n"
+        "typedef struct {\n"
+        "  FLT4 T[64];\n"
+        "} s_"I_POSTTRANSFORMMATRICES";\n\n"
+        "typedef struct {\n"
+        "  float4 col;\n"
+        "  float4 cosatt;\n"
+        "  float4 distatt;\n"
+        "  float4 pos;\n"
+        "  float4 dir;\n"
+        "} Light;\n\n"
+        "typedef struct {\n"
+        "  Light lights[8];\n"
+        "} s_"I_LIGHTS";\n\n"
+        "typedef struct {\n"
+        "  float4 C0, C1, C2, C3;\n"
+        "} s_"I_MATERIALS";\n\n"
+        "typedef struct {\n"
+        "  float4 T0,T1,T2,T3;\n"
+        "} s_"I_PROJECTION";\n"
+        "typedef struct {\n"
+        "  float4 params;\n" // a, b, c, b_shift
+        "} s_"I_FOGPARAMS";\n\n");
+
+    WRITE(p, "struct VS_OUTPUT {\n");
+    WRITE(p, "  float4 pos : POSITION;\n");
+    WRITE(p, "  float4 colors[2] : COLOR0;\n");
+
+    // if outputting Z, embed the Z coordinate in the w component of a texture coordinate
+    // if number of tex gens occupies all the texture coordinates, use the last tex coord
+    // otherwise use the next available tex coord
+    for (int i = 0; i < xfregs.numTexGens; ++i) {
+        WRITE(p, "  float%d tex%d : TEXCOORD%d;\n", (i==(xfregs.numTexGens-1)&&bOutputZ)?4:3, i, i);
+    }
+    if (bOutputZ && xfregs.numTexGens == 0) {
+        ztexcoord = 0;
+        WRITE(p, "  float4 tex%d : TEXCOORD%d;\n", ztexcoord, ztexcoord);
+    }
+    else if (bOutputZ)
+        ztexcoord = xfregs.numTexGens - 1;
+
+    WRITE(p, "};\n");
+    WRITE(p, "\n");
+
+    // uniforms
+    
+    // bool bTexMtx = ((components & VB_HAS_TEXMTXIDXALL)<<VB_HAS_UVTEXMTXSHIFT)!=0; unused TODO: keep?
+
+    WRITE(p, "uniform s_"I_TRANSFORMMATRICES" "I_TRANSFORMMATRICES" : register(c%d);\n", C_TRANSFORMMATRICES);
+    WRITE(p, "uniform s_"I_TEXMATRICES" "I_TEXMATRICES" : register(c%d);\n", C_TEXMATRICES); // also using tex matrices
+    WRITE(p, "uniform s_"I_NORMALMATRICES" "I_NORMALMATRICES" : register(c%d);\n", C_NORMALMATRICES);
+    WRITE(p, "uniform s_"I_POSNORMALMATRIX" "I_POSNORMALMATRIX" : register(c%d);\n", C_POSNORMALMATRIX);
+    WRITE(p, "uniform s_"I_POSTTRANSFORMMATRICES" "I_POSTTRANSFORMMATRICES" : register(c%d);\n", C_POSTTRANSFORMMATRICES);
+    WRITE(p, "uniform s_"I_LIGHTS" "I_LIGHTS" : register(c%d);\n", C_LIGHTS);
+    WRITE(p, "uniform s_"I_MATERIALS" "I_MATERIALS" : register(c%d);\n", C_MATERIALS);
+    WRITE(p, "uniform s_"I_PROJECTION" "I_PROJECTION" : register(c%d);\n", C_PROJECTION);
+    WRITE(p, "uniform s_"I_FOGPARAMS" "I_FOGPARAMS" : register(c%d);\n", C_FOGPARAMS);
+
+    WRITE(p, "VS_OUTPUT main(\n");
+    
+    // inputs
+    if (components & VB_HAS_NRM0)
+        WRITE(p, "  float3 rawnorm0 : NORMAL,\n");
+    if (components & VB_HAS_NRM1)
+        WRITE(p, "  float3 rawnorm1 : ATTR%d,\n", SHADER_NORM1_ATTRIB);
+    if (components & VB_HAS_NRM2)
+        WRITE(p, "  float3 rawnorm2 : ATTR%d,\n", SHADER_NORM2_ATTRIB);
+    if (components & VB_HAS_COL0)
+        WRITE(p, "  float4 color0 : COLOR0,\n");
+    if (components & VB_HAS_COL1)
+        WRITE(p, "  float4 color1 : COLOR1,\n");
+    for (int i = 0; i < 8; ++i) {
+        u32 hastexmtx = (components & (VB_HAS_TEXMTXIDX0<<i));
+        if ((components & (VB_HAS_UV0<<i)) || hastexmtx )
+            WRITE(p, "  float%d tex%d : TEXCOORD%d,\n", hastexmtx ? 3 : 2, i,i);
+    }
+    if (components & VB_HAS_POSMTXIDX)
+        WRITE(p, "  half posmtx : ATTR%d,\n", SHADER_POSMTX_ATTRIB);
+
+    WRITE(p, "  float4 rawpos : POSITION) {\n");
+    WRITE(p, "VS_OUTPUT o;\n");
+
+    // transforms
+    if (components & VB_HAS_POSMTXIDX) {
+        WRITE(p, "float4 pos = float4(dot("I_TRANSFORMMATRICES".T[posmtx].t, rawpos), dot("I_TRANSFORMMATRICES".T[posmtx+1].t, rawpos), dot("I_TRANSFORMMATRICES".T[posmtx+2].t, rawpos),1);\n");
+        
+        if (components & VB_HAS_NRMALL) {
+            WRITE(p, "int normidx = posmtx >= 32 ? (posmtx-32) : posmtx;\n");
+            WRITE(p, "float3 N0 = "I_NORMALMATRICES".T[normidx].t.xyz, N1 = "I_NORMALMATRICES".T[normidx+1].t.xyz, N2 = "I_NORMALMATRICES".T[normidx+2].t.xyz;\n");
+        }
+
+        if (components & VB_HAS_NRM0)
+            WRITE(p, "half3 _norm0 = half3(dot(N0, rawnorm0), dot(N1, rawnorm0), dot(N2, rawnorm0));\n"
+                     "half3 norm0 = normalize(_norm0);\n");
+        if (components & VB_HAS_NRM1)
+            WRITE(p, "half3 _norm1 = half3(dot(N0, rawnorm1), dot(N1, rawnorm1), dot(N2, rawnorm1));\n");
+                    //"half3 norm1 = normalize(_norm1);\n");
+        if (components & VB_HAS_NRM2)
+            WRITE(p, "half3 _norm2 = half3(dot(N0, rawnorm2), dot(N1, rawnorm2), dot(N2, rawnorm2));\n");
+                    //"half3 norm2 = normalize(_norm2);\n");
+    }
+    else {
+        WRITE(p, "float4 pos = float4(dot("I_POSNORMALMATRIX".T0, rawpos), dot("I_POSNORMALMATRIX".T1, rawpos), dot("I_POSNORMALMATRIX".T2, rawpos), 1);\n");
+        if (components & VB_HAS_NRM0)
+            WRITE(p, "half3 _norm0 = half3(dot("I_POSNORMALMATRIX".N0.xyz, rawnorm0), dot("I_POSNORMALMATRIX".N1.xyz, rawnorm0), dot("I_POSNORMALMATRIX".N2.xyz, rawnorm0));\n"
+                     "half3 norm0 = normalize(_norm0);\n");
+        if (components & VB_HAS_NRM1)
+            WRITE(p, "half3 _norm1 = half3(dot("I_POSNORMALMATRIX".N0.xyz, rawnorm1), dot("I_POSNORMALMATRIX".N1.xyz, rawnorm1), dot("I_POSNORMALMATRIX".N2.xyz, rawnorm1));\n");
+                    //"half3 norm1 = normalize(_norm1);\n");
+        if (components & VB_HAS_NRM2)
+            WRITE(p, "half3 _norm2 = half3(dot("I_POSNORMALMATRIX".N0.xyz, rawnorm2), dot("I_POSNORMALMATRIX".N1.xyz, rawnorm2), dot("I_POSNORMALMATRIX".N2.xyz, rawnorm2));\n");
+                    //"half3 norm2 = normalize(_norm2);\n");
+    }
+
+    if (!(components & VB_HAS_NRM0))
+        WRITE(p, "half3 _norm0 = half3(0,0,0), norm0= half3(0,0,0);\n");
+
+    WRITE(p, "o.pos = float4(dot("I_PROJECTION".T0, pos), dot("I_PROJECTION".T1, pos), dot("I_PROJECTION".T2, pos), dot("I_PROJECTION".T3, pos));\n");
+
+    WRITE(p, "half4 mat, lacc;\n"
+    "half3 ldir, h;\n"
+    "half dist, dist2, attn;\n");
+
+    // lights/colors
+    for (int j = 0; j < xfregs.nNumChans; j++) {
+
+        // bool bColorAlphaSame = xfregs.colChans[j].color.hex == xfregs.colChans[j].alpha.hex;  unused
+        const LitChannel& color = xfregs.colChans[j].color;
+        const LitChannel& alpha = xfregs.colChans[j].alpha;
+
+        WRITE(p, "{\n");
+
+        if (color.matsource) {// from vertex
+            if (components & (VB_HAS_COL0<<j) )
+                WRITE(p, "mat = color%d;\n", j);
+            else WRITE(p, "mat = half4(1,1,1,1);\n");
+        }
+        else // from color
+            WRITE(p, "mat = "I_MATERIALS".C%d;\n", j+2);
+
+        if (color.enablelighting) {
+            if (color.ambsource) {// from vertex
+                if (components & (VB_HAS_COL0<<j) )
+                    WRITE(p, "lacc = color%d;\n", j);
+                else WRITE(p, "lacc = half4(0.0f,0.0f,0.0f,0.0f);\n");
+            }
+            else // from color
+                WRITE(p, "lacc = "I_MATERIALS".C%d;\n", j);
+        }
+
+        // check if alpha is different
+        if (alpha.matsource != color.matsource) {
+            if (alpha.matsource) {// from vertex
+                if (components & (VB_HAS_COL0<<j) )
+                    WRITE(p, "mat.w = color%d.w;\n", j);
+                else WRITE(p, "mat.w = 1;\n");
+            }
+            else // from color
+                WRITE(p, "mat.w = "I_MATERIALS".C%d.w;\n", j+2);
+        }
+
+        if (alpha.enablelighting && alpha.ambsource != color.ambsource) {
+            if (alpha.ambsource) {// from vertex
+                if (components & (VB_HAS_COL0<<j) )
+                    WRITE(p, "lacc.w = color%d.w;\n", j);
+                else WRITE(p, "lacc.w = 0;\n");
+            }
+            else // from color
+                WRITE(p, "lacc.w = "I_MATERIALS".C%d.w;\n", j);
+        }
+        
+        if (color.enablelighting && alpha.enablelighting && (color.GetFullLightMask() != alpha.GetFullLightMask() || color.lightparams != alpha.lightparams)) {
+
+            // both have lighting, except not using the same lights
+            int mask = 0; // holds already computed lights
+
+            if (color.lightparams == alpha.lightparams && (color.GetFullLightMask() & alpha.GetFullLightMask())) {
+                // if lights are shared, compute those first
+                mask = color.GetFullLightMask() & alpha.GetFullLightMask();
+                for (int i = 0; i < 8; ++i) {
+                    if (mask&(1<<i))
+                        p = GenerateLightShader(p, i, color, "lacc", 3);
+                }
+            }
+
+            // no shared lights
+            for (int i = 0; i < 8; ++i) {
+                if (!(mask&(1<<i)) && (color.GetFullLightMask() & (1<<i)) )
+                    p = GenerateLightShader(p, i, color, "lacc", 1);
+                if (!(mask&(1<<i)) && (alpha.GetFullLightMask() & (1<<i)) )
+                    p = GenerateLightShader(p, i, alpha, "lacc", 2);
+            }
+        }
+        else if (color.enablelighting || alpha.enablelighting) {
+            // either one is enabled
+            int coloralpha = (int)color.enablelighting|((int)alpha.enablelighting<<1);
+            for (int i = 0; i < 8; ++i) {
+                if (color.GetFullLightMask() & (1<<i) )
+                    p = GenerateLightShader(p, i, color.enablelighting?color:alpha, "lacc", coloralpha);
+            }
+        }
+
+        if (color.enablelighting != alpha.enablelighting) {
+            if (color.enablelighting )
+                WRITE(p, "o.colors[%d].xyz = mat.xyz * clamp(lacc.xyz,float3(0.0f,0.0f,0.0f),float3(1.0f,1.0f,1.0f));\n"
+                    "o.colors[%d].w = mat.w;\n", j, j);
+            else
+                WRITE(p, "o.colors[%d].xyz = mat.xyz;\n"
+                    "o.colors[%d].w = mat.w  * clamp(lacc.w,0.0f,1.0f);\n", j, j);
+        }
+        else {
+            if (alpha.enablelighting )
+                WRITE(p, "o.colors[%d] = mat * clamp(lacc,float4(0.0f,0.0f,0.0f,0.0f), float4(1.0f,1.0f,1.0f,1.0f));\n", j);
+            else WRITE(p, "o.colors[%d] = mat;\n", j);
+        }
+        WRITE(p, "}\n");
+    }
+
+    // zero left over channels
+    for (int i = xfregs.nNumChans; i < 2; ++i)
+		WRITE(p, "o.colors[%d] = 0;\n", i);
+
+    // transform texcoords
+    for (int i = 0; i < xfregs.numTexGens; ++i) {
+        TexMtxInfo& texinfo = xfregs.texcoords[i].texmtxinfo;
+
+        WRITE(p, "{\n");
+        switch (texinfo.sourcerow) {
+        case XF_SRCGEOM_INROW:
+            _assert_( texinfo.inputform == XF_TEXINPUT_ABC1 );
+            WRITE(p, "float4 coord = rawpos;\n"); // pos.w is 1
+            break;
+        case XF_SRCNORMAL_INROW:
+            if (components & VB_HAS_NRM0) {
+                _assert_( texinfo.inputform == XF_TEXINPUT_ABC1 );
+                WRITE(p, "float4 coord = float4(rawnorm0.xyz, 1.0);\n");
+            }
+            else WRITE(p, "float4 coord = 0;\n");
+            break;
+        case XF_SRCCOLORS_INROW:
+            _assert_( texinfo.texgentype == XF_TEXGEN_COLOR_STRGBC0 || texinfo.texgentype == XF_TEXGEN_COLOR_STRGBC1 );
+            break;
+        case XF_SRCBINORMAL_T_INROW:
+            if (components & VB_HAS_NRM1) {
+                _assert_( texinfo.inputform == XF_TEXINPUT_ABC1 );
+                WRITE(p, "float4 coord = float4(rawnorm1.xyz, 1.0);\n");
+            }
+            else WRITE(p, "float4 coord = 0;\n");
+            break;
+        case XF_SRCBINORMAL_B_INROW:
+            if (components & VB_HAS_NRM2) {
+                _assert_( texinfo.inputform == XF_TEXINPUT_ABC1 );
+                WRITE(p, "float4 coord = float4(rawnorm2.xyz, 1.0);\n");
+            }
+            else WRITE(p, "float4 coord = 0;\n");
+            break;
+        default:
+            _assert_(texinfo.sourcerow <= XF_SRCTEX7_INROW);
+            if (components & (VB_HAS_UV0<<(texinfo.sourcerow - XF_SRCTEX0_INROW)) )
+                WRITE(p, "float4 coord = float4(tex%d.x, tex%d.y, 1.0f, 1.0f);\n", texinfo.sourcerow - XF_SRCTEX0_INROW, texinfo.sourcerow - XF_SRCTEX0_INROW);
+            else
+                WRITE(p, "float4 coord = float4(0.0f, 0.0f, 1.0f, 1.0f);\n");
+            break;
+        }
+
+        // firs transformation
+        switch (texinfo.texgentype) {
+            case XF_TEXGEN_REGULAR:
+                if (components & (VB_HAS_TEXMTXIDX0<<i)) {
+                    if (texinfo.projection == XF_TEXPROJ_STQ )
+                        WRITE(p, "o.tex%d.xyz = float3(dot(coord, "I_TRANSFORMMATRICES".T[tex%d.z].t), dot(coord, "I_TRANSFORMMATRICES".T[tex%d.z+1].t), dot(coord, "I_TRANSFORMMATRICES".T[tex%d.z+2].t));\n", i, i, i, i);
+                    else {
+                        WRITE(p, "o.tex%d.xyz = float3(dot(coord, "I_TRANSFORMMATRICES".T[tex%d.z].t), dot(coord, "I_TRANSFORMMATRICES".T[tex%d.z+1].t), 1);\n", i, i, i);
+                    }
+                }
+                else {
+                    if (texinfo.projection == XF_TEXPROJ_STQ )
+                        WRITE(p, "o.tex%d.xyz = float3(dot(coord, "I_TEXMATRICES".T[%d].t), dot(coord, "I_TEXMATRICES".T[%d].t), dot(coord, "I_TEXMATRICES".T[%d].t));\n", i, 3*i, 3*i+1, 3*i+2);
+                    else
+                        WRITE(p, "o.tex%d.xyz = float3(dot(coord, "I_TEXMATRICES".T[%d].t), dot(coord, "I_TEXMATRICES".T[%d].t), 1);\n", i, 3*i, 3*i+1);
+                }
+                break;
+            case XF_TEXGEN_EMBOSS_MAP: // calculate tex coords into bump map
+
+                if (components & (VB_HAS_NRM1|VB_HAS_NRM2)) {
+                    // transform the light dir into tangent space
+                    WRITE(p, "ldir = normalize("I_LIGHTS".lights[%d].pos.xyz - pos.xyz);\n", texinfo.embosslightshift); 
+                    WRITE(p, "o.tex%d.xyz = o.tex%d.xyz + float3(dot(ldir, _norm1), dot(ldir, _norm2), 0.0f);\n", i, texinfo.embosssourceshift);
+                }
+                else _assert_(0); // should have normals
+
+                break;
+            case XF_TEXGEN_COLOR_STRGBC0:
+                _assert_(texinfo.sourcerow == XF_SRCCOLORS_INROW);
+                WRITE(p, "o.tex%d.xyz = float3(o.colors[0].x, o.colors[0].y, 1);\n", i);
+                break;
+            case XF_TEXGEN_COLOR_STRGBC1:
+                _assert_(texinfo.sourcerow == XF_SRCCOLORS_INROW);
+                WRITE(p, "o.tex%d.xyz = float3(o.colors[1].x, o.colors[1].y, 1);\n", i);
+                break;
+        }
+
+        if(xfregs.bEnableDualTexTransform && texinfo.texgentype == XF_TEXGEN_REGULAR) { // only works for regular tex gen types?
+            if (xfregs.texcoords[i].postmtxinfo.normalize)
+                WRITE(p, "o.tex%d.xyz = normalize(o.tex%d.xyz);\n", i, i);
+
+            //multiply by postmatrix
+            int postidx = xfregs.texcoords[i].postmtxinfo.index;
+            WRITE(p, "float4 P0 = "I_POSTTRANSFORMMATRICES".T[%d].t;\n"
+                "float4 P1 = "I_POSTTRANSFORMMATRICES".T[%d].t;\n"
+                "float4 P2 = "I_POSTTRANSFORMMATRICES".T[%d].t;\n",
+                postidx&0x3f, (postidx+1)&0x3f, (postidx+2)&0x3f);
+            WRITE(p, "o.tex%d.xyz = float3(dot(P0.xyz, o.tex%d.xyz) + P0.w, dot(P1.xyz, o.tex%d.xyz) + P1.w, dot(P2.xyz, o.tex%d.xyz) + P2.w);\n", i, i, i, i);
+        }
+
+        WRITE(p, "}\n");
+    }
+
+    if (ztexcoord >= 0 )
+        WRITE(p, "o.tex%d.w = o.pos.z/o.pos.w;\n", ztexcoord);
+
+//    if (bpmem.fog.c_proj_fsel.fsel != 0) {
+//        switch (bpmem.fog.c_proj_fsel.fsel) {
+//            case 1: // linear
+//                break;
+//            case 4: // exp
+//                break;
+//            case 5: // exp2
+//                break;
+//            case 6: // backward exp
+//                break;
+//            case 7: // backward exp2
+//                break;
+//        }
+//
+//        WRITE(p, "o.fog = o.pos.z/o.pos.w;\n");
+//    }
+
+    WRITE(p, "return o;\n}\n");
+
+	if (text[sizeof(text) - 1] != 0x7C)
+		PanicAlert("VertexShader generator - buffer too small, canary has been eaten!");
+    return text;
+}
+
+// coloralpha - 1 if color, 2 if alpha
+char* GenerateLightShader(char* p, int index, const LitChannel& chan, const char* dest, int coloralpha)
+{
+    const char* swizzle = "xyzw";
+    if (coloralpha == 1 ) swizzle = "xyz";
+    else if (coloralpha == 2 ) swizzle = "w";
+
+    if (!(chan.attnfunc & 1)) {
+        // atten disabled
+        switch (chan.diffusefunc) {
+            case LIGHTDIF_NONE:
+                WRITE(p, "%s.%s += "I_LIGHTS".lights[%d].col.%s;\n", dest, swizzle, index, swizzle);
+                break;
+            case LIGHTDIF_SIGN:
+            case LIGHTDIF_CLAMP:
+                WRITE(p, "ldir = normalize("I_LIGHTS".lights[%d].pos.xyz - pos.xyz);\n", index);
+                WRITE(p, "%s.%s += %sdot(ldir, norm0)) * "I_LIGHTS".lights[%d].col.%s;\n",
+                    dest, swizzle, chan.diffusefunc != LIGHTDIF_SIGN ? "max(0.0f," :"(", index, swizzle);
+                break;
+            default: _assert_(0);
+        }
+    }
+    else { // spec and spot
+        WRITE(p, "ldir = "I_LIGHTS".lights[%d].pos.xyz - pos.xyz;\n", index);
+
+        if (chan.attnfunc == 3) { // spot
+            WRITE(p, "dist2 = dot(ldir, ldir);\n"
+                "dist = sqrt(dist2);\n"
+                "ldir = ldir / dist;\n"
+                "attn = max(0.0f, dot(ldir, "I_LIGHTS".lights[%d].dir.xyz));\n",index);
+            WRITE(p, "attn = max(0.0f, dot("I_LIGHTS".lights[%d].cosatt.xyz, half3(1, attn, attn*attn))) / dot("I_LIGHTS".lights[%d].distatt.xyz, half3(1,dist,dist2));\n", index, index);
+        }
+        else if (chan.attnfunc == 1) { // specular
+            WRITE(p, "attn = dot(norm0, "I_LIGHTS".lights[%d].pos.xyz) > 0 ? max(0.0f, dot(norm0, "I_LIGHTS".lights[%d].dir.xyz)) : 0;\n", index, index);
+            WRITE(p, "ldir = half3(1,attn,attn*attn);\n");
+            WRITE(p, "attn = max(0.0f, dot("I_LIGHTS".lights[%d].cosatt.xyz, ldir)) / dot("I_LIGHTS".lights[%d].distatt.xyz, ldir);\n", index, index);
+        }
+
+        switch (chan.diffusefunc) {
+            case LIGHTDIF_NONE:
+                WRITE(p, "%s.%s += attn * "I_LIGHTS".lights[%d].col.%s;\n", dest, swizzle, index, swizzle);
+                break;
+            case LIGHTDIF_SIGN:
+            case LIGHTDIF_CLAMP:
+                WRITE(p, "%s.%s += attn * %sdot(ldir, norm0)) * "I_LIGHTS".lights[%d].col.%s;\n",
+                    dest, swizzle, chan.diffusefunc != LIGHTDIF_SIGN ? "max(0.0f," :"(", index, swizzle);
+                break;
+            default: _assert_(0);
+        }
+    }
+    WRITE(p, "\n");
+
+    return p;
+}