/*
 * Copyright 2008 Stefan Dösinger
 * Copyright 2009 Matteo Bruni
 * Copyright 2008-2009 Henri Verbeet for CodeWeavers
 * Copyright 2010 Rico Schüller
 * Copyright 2012 Matteo Bruni for CodeWeavers
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 *
 */

#include "config.h"
#include "wine/port.h"

#include <stdio.h>

#include "d3dcompiler_private.h"

WINE_DEFAULT_DEBUG_CHANNEL(d3dcompiler);

#define WINE_D3DCOMPILER_TO_STR(x) case x: return #x

const char *debug_d3dcompiler_shader_variable_class(D3D_SHADER_VARIABLE_CLASS c)
{
    switch (c)
    {
        WINE_D3DCOMPILER_TO_STR(D3D_SVC_SCALAR);
        WINE_D3DCOMPILER_TO_STR(D3D_SVC_VECTOR);
        WINE_D3DCOMPILER_TO_STR(D3D_SVC_MATRIX_ROWS);
        WINE_D3DCOMPILER_TO_STR(D3D_SVC_MATRIX_COLUMNS);
        WINE_D3DCOMPILER_TO_STR(D3D_SVC_OBJECT);
        WINE_D3DCOMPILER_TO_STR(D3D_SVC_STRUCT);
        WINE_D3DCOMPILER_TO_STR(D3D_SVC_INTERFACE_CLASS);
        WINE_D3DCOMPILER_TO_STR(D3D_SVC_INTERFACE_POINTER);
        default:
            FIXME("Unrecognized D3D_SHADER_VARIABLE_CLASS %#x.\n", c);
            return "unrecognized";
    }
}

const char *debug_d3dcompiler_shader_variable_type(D3D_SHADER_VARIABLE_TYPE t)
{
    switch (t)
    {
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_VOID);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_BOOL);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_INT);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_FLOAT);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_STRING);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_TEXTURE);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_TEXTURE1D);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_TEXTURE2D);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_TEXTURE3D);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_TEXTURECUBE);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_SAMPLER);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_PIXELSHADER);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_VERTEXSHADER);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_UINT);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_UINT8);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_GEOMETRYSHADER);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_RASTERIZER);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_DEPTHSTENCIL);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_BLEND);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_BUFFER);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_CBUFFER);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_TBUFFER);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_TEXTURE1DARRAY);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_TEXTURE2DARRAY);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_RENDERTARGETVIEW);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_DEPTHSTENCILVIEW);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_TEXTURE2DMS);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_TEXTURE2DMSARRAY);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_TEXTURECUBEARRAY);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_HULLSHADER);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_DOMAINSHADER);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_INTERFACE_POINTER);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_COMPUTESHADER);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_DOUBLE);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_RWTEXTURE1D);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_RWTEXTURE1DARRAY);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_RWTEXTURE2D);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_RWTEXTURE2DARRAY);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_RWTEXTURE3D);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_RWBUFFER);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_BYTEADDRESS_BUFFER);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_RWBYTEADDRESS_BUFFER);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_STRUCTURED_BUFFER);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_RWSTRUCTURED_BUFFER);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_APPEND_STRUCTURED_BUFFER);
        WINE_D3DCOMPILER_TO_STR(D3D_SVT_CONSUME_STRUCTURED_BUFFER);
        default:
            FIXME("Unrecognized D3D_SHADER_VARIABLE_TYPE %#x.\n", t);
            return "unrecognized";
    }
}

const char *debug_d3dcompiler_d3d_blob_part(D3D_BLOB_PART part)
{
    switch(part)
    {
        WINE_D3DCOMPILER_TO_STR(D3D_BLOB_INPUT_SIGNATURE_BLOB);
        WINE_D3DCOMPILER_TO_STR(D3D_BLOB_OUTPUT_SIGNATURE_BLOB);
        WINE_D3DCOMPILER_TO_STR(D3D_BLOB_INPUT_AND_OUTPUT_SIGNATURE_BLOB);
        WINE_D3DCOMPILER_TO_STR(D3D_BLOB_PATCH_CONSTANT_SIGNATURE_BLOB);
        WINE_D3DCOMPILER_TO_STR(D3D_BLOB_ALL_SIGNATURE_BLOB);
        WINE_D3DCOMPILER_TO_STR(D3D_BLOB_DEBUG_INFO);
        WINE_D3DCOMPILER_TO_STR(D3D_BLOB_LEGACY_SHADER);
        WINE_D3DCOMPILER_TO_STR(D3D_BLOB_XNA_PREPASS_SHADER);
        WINE_D3DCOMPILER_TO_STR(D3D_BLOB_XNA_SHADER);
        WINE_D3DCOMPILER_TO_STR(D3D_BLOB_TEST_ALTERNATE_SHADER);
        WINE_D3DCOMPILER_TO_STR(D3D_BLOB_TEST_COMPILE_DETAILS);
        WINE_D3DCOMPILER_TO_STR(D3D_BLOB_TEST_COMPILE_PERF);
        default:
            FIXME("Unrecognized D3D_BLOB_PART %#x\n", part);
            return "unrecognized";
    }
}

const char *debug_print_srcmod(DWORD mod)
{
    switch (mod)
    {
        WINE_D3DCOMPILER_TO_STR(BWRITERSPSM_NEG);
        WINE_D3DCOMPILER_TO_STR(BWRITERSPSM_BIAS);
        WINE_D3DCOMPILER_TO_STR(BWRITERSPSM_BIASNEG);
        WINE_D3DCOMPILER_TO_STR(BWRITERSPSM_SIGN);
        WINE_D3DCOMPILER_TO_STR(BWRITERSPSM_SIGNNEG);
        WINE_D3DCOMPILER_TO_STR(BWRITERSPSM_COMP);
        WINE_D3DCOMPILER_TO_STR(BWRITERSPSM_X2);
        WINE_D3DCOMPILER_TO_STR(BWRITERSPSM_X2NEG);
        WINE_D3DCOMPILER_TO_STR(BWRITERSPSM_DZ);
        WINE_D3DCOMPILER_TO_STR(BWRITERSPSM_DW);
        WINE_D3DCOMPILER_TO_STR(BWRITERSPSM_ABS);
        WINE_D3DCOMPILER_TO_STR(BWRITERSPSM_ABSNEG);
        WINE_D3DCOMPILER_TO_STR(BWRITERSPSM_NOT);
        default:
            FIXME("Unrecognized source modifier %#x.\n", mod);
            return "unrecognized_src_mod";
    }
}

#undef WINE_D3DCOMPILER_TO_STR

const char *debug_print_dstmod(DWORD mod)
{
    switch (mod)
    {
        case 0:
            return "";
        case BWRITERSPDM_SATURATE:
            return "_sat";
        case BWRITERSPDM_PARTIALPRECISION:
            return "_pp";
        case BWRITERSPDM_MSAMPCENTROID:
            return "_centroid";
        case BWRITERSPDM_SATURATE | BWRITERSPDM_PARTIALPRECISION:
            return "_sat_pp";
        case BWRITERSPDM_SATURATE | BWRITERSPDM_MSAMPCENTROID:
            return "_sat_centroid";
        case BWRITERSPDM_PARTIALPRECISION | BWRITERSPDM_MSAMPCENTROID:
            return "_pp_centroid";
        case BWRITERSPDM_SATURATE | BWRITERSPDM_PARTIALPRECISION | BWRITERSPDM_MSAMPCENTROID:
            return "_sat_pp_centroid";
        default:
            return "Unexpected modifier\n";
    }
}

const char *debug_print_shift(DWORD shift)
{
    static const char * const shiftstrings[] =
    {
        "",
        "_x2",
        "_x4",
        "_x8",
        "_x16",
        "_x32",
        "",
        "",
        "",
        "",
        "",
        "",
        "_d16",
        "_d8",
        "_d4",
        "_d2",
    };
    return shiftstrings[shift];
}

static const char *get_regname(const struct shader_reg *reg)
{
    switch (reg->type)
    {
        case BWRITERSPR_TEMP:
            return wine_dbg_sprintf("r%u", reg->regnum);
        case BWRITERSPR_INPUT:
            return wine_dbg_sprintf("v%u", reg->regnum);
        case BWRITERSPR_CONST:
            return wine_dbg_sprintf("c%u", reg->regnum);
        case BWRITERSPR_ADDR:
            return wine_dbg_sprintf("a%u", reg->regnum);
        case BWRITERSPR_TEXTURE:
            return wine_dbg_sprintf("t%u", reg->regnum);
        case BWRITERSPR_RASTOUT:
            switch (reg->regnum)
            {
                case BWRITERSRO_POSITION:   return "oPos";
                case BWRITERSRO_FOG:        return "oFog";
                case BWRITERSRO_POINT_SIZE: return "oPts";
                default: return "Unexpected RASTOUT";
            }
        case BWRITERSPR_ATTROUT:
            return wine_dbg_sprintf("oD%u", reg->regnum);
        case BWRITERSPR_TEXCRDOUT:
            return wine_dbg_sprintf("oT%u", reg->regnum);
        case BWRITERSPR_OUTPUT:
            return wine_dbg_sprintf("o%u", reg->regnum);
        case BWRITERSPR_CONSTINT:
            return wine_dbg_sprintf("i%u", reg->regnum);
        case BWRITERSPR_COLOROUT:
            return wine_dbg_sprintf("oC%u", reg->regnum);
        case BWRITERSPR_DEPTHOUT:
            return "oDepth";
        case BWRITERSPR_SAMPLER:
            return wine_dbg_sprintf("s%u", reg->regnum);
        case BWRITERSPR_CONSTBOOL:
            return wine_dbg_sprintf("b%u", reg->regnum);
        case BWRITERSPR_LOOP:
            return "aL";
        case BWRITERSPR_MISCTYPE:
            switch (reg->regnum)
            {
                case 0: return "vPos";
                case 1: return "vFace";
                default: return "unexpected misctype";
            }
        case BWRITERSPR_LABEL:
            return wine_dbg_sprintf("l%u", reg->regnum);
        case BWRITERSPR_PREDICATE:
            return wine_dbg_sprintf("p%u", reg->regnum);
        default:
            return wine_dbg_sprintf("unknown regname %#x", reg->type);
    }
}

static const char *debug_print_writemask(DWORD mask)
{
    char ret[6];
    unsigned char pos = 1;

    if(mask == BWRITERSP_WRITEMASK_ALL) return "";
    ret[0] = '.';
    if(mask & BWRITERSP_WRITEMASK_0) ret[pos++] = 'x';
    if(mask & BWRITERSP_WRITEMASK_1) ret[pos++] = 'y';
    if(mask & BWRITERSP_WRITEMASK_2) ret[pos++] = 'z';
    if(mask & BWRITERSP_WRITEMASK_3) ret[pos++] = 'w';
    ret[pos] = 0;

    return wine_dbg_sprintf("%s", ret);
}

static const char *debug_print_swizzle(DWORD arg)
{
    char ret[6];
    unsigned int i;
    DWORD swizzle[4];

    switch (arg)
    {
        case BWRITERVS_NOSWIZZLE:
            return "";
        case BWRITERVS_SWIZZLE_X:
            return ".x";
        case BWRITERVS_SWIZZLE_Y:
            return ".y";
        case BWRITERVS_SWIZZLE_Z:
            return ".z";
        case BWRITERVS_SWIZZLE_W:
            return ".w";
    }

    swizzle[0] = (arg >> (BWRITERVS_SWIZZLE_SHIFT + 0)) & 0x03;
    swizzle[1] = (arg >> (BWRITERVS_SWIZZLE_SHIFT + 2)) & 0x03;
    swizzle[2] = (arg >> (BWRITERVS_SWIZZLE_SHIFT + 4)) & 0x03;
    swizzle[3] = (arg >> (BWRITERVS_SWIZZLE_SHIFT + 6)) & 0x03;

    ret[0] = '.';
    for (i = 0; i < 4; ++i)
    {
        switch (swizzle[i])
        {
            case 0: ret[1 + i] = 'x'; break;
            case 1: ret[1 + i] = 'y'; break;
            case 2: ret[1 + i] = 'z'; break;
            case 3: ret[1 + i] = 'w'; break;
        }
    }
    ret[5] = '\0';

    return wine_dbg_sprintf("%s", ret);
}

static const char *debug_print_relarg(const struct shader_reg *reg)
{
    const char *short_swizzle;
    if (!reg->rel_reg) return "";

    short_swizzle = debug_print_swizzle(reg->rel_reg->u.swizzle);

    if (reg->rel_reg->type == BWRITERSPR_ADDR)
        return wine_dbg_sprintf("[a%u%s]", reg->rel_reg->regnum, short_swizzle);
    else if(reg->rel_reg->type == BWRITERSPR_LOOP && reg->rel_reg->regnum == 0)
        return wine_dbg_sprintf("[aL%s]", short_swizzle);
    else
        return "Unexpected relative addressing argument";
}

const char *debug_print_dstreg(const struct shader_reg *reg)
{
    return wine_dbg_sprintf("%s%s%s", get_regname(reg),
            debug_print_relarg(reg),
            debug_print_writemask(reg->u.writemask));
}

const char *debug_print_srcreg(const struct shader_reg *reg)
{
    switch (reg->srcmod)
    {
        case BWRITERSPSM_NONE:
            return wine_dbg_sprintf("%s%s%s", get_regname(reg),
                    debug_print_relarg(reg),
                    debug_print_swizzle(reg->u.swizzle));
        case BWRITERSPSM_NEG:
            return wine_dbg_sprintf("-%s%s%s", get_regname(reg),
                    debug_print_relarg(reg),
                    debug_print_swizzle(reg->u.swizzle));
        case BWRITERSPSM_BIAS:
            return wine_dbg_sprintf("%s%s_bias%s", get_regname(reg),
                    debug_print_relarg(reg),
                    debug_print_swizzle(reg->u.swizzle));
        case BWRITERSPSM_BIASNEG:
            return wine_dbg_sprintf("-%s%s_bias%s", get_regname(reg),
                    debug_print_relarg(reg),
                    debug_print_swizzle(reg->u.swizzle));
        case BWRITERSPSM_SIGN:
            return wine_dbg_sprintf("%s%s_bx2%s", get_regname(reg),
                    debug_print_relarg(reg),
                    debug_print_swizzle(reg->u.swizzle));
        case BWRITERSPSM_SIGNNEG:
            return wine_dbg_sprintf("-%s%s_bx2%s", get_regname(reg),
                    debug_print_relarg(reg),
                    debug_print_swizzle(reg->u.swizzle));
        case BWRITERSPSM_COMP:
            return wine_dbg_sprintf("1 - %s%s%s", get_regname(reg),
                    debug_print_relarg(reg),
                    debug_print_swizzle(reg->u.swizzle));
        case BWRITERSPSM_X2:
            return wine_dbg_sprintf("%s%s_x2%s", get_regname(reg),
                    debug_print_relarg(reg),
                    debug_print_swizzle(reg->u.swizzle));
        case BWRITERSPSM_X2NEG:
            return wine_dbg_sprintf("-%s%s_x2%s", get_regname(reg),
                    debug_print_relarg(reg),
                    debug_print_swizzle(reg->u.swizzle));
        case BWRITERSPSM_DZ:
            return wine_dbg_sprintf("%s%s_dz%s", get_regname(reg),
                    debug_print_relarg(reg),
                    debug_print_swizzle(reg->u.swizzle));
        case BWRITERSPSM_DW:
            return wine_dbg_sprintf("%s%s_dw%s", get_regname(reg),
                    debug_print_relarg(reg),
                    debug_print_swizzle(reg->u.swizzle));
        case BWRITERSPSM_ABS:
            return wine_dbg_sprintf("%s%s_abs%s", get_regname(reg),
                    debug_print_relarg(reg),
                    debug_print_swizzle(reg->u.swizzle));
        case BWRITERSPSM_ABSNEG:
            return wine_dbg_sprintf("-%s%s_abs%s", get_regname(reg),
                    debug_print_relarg(reg),
                    debug_print_swizzle(reg->u.swizzle));
        case BWRITERSPSM_NOT:
            return wine_dbg_sprintf("!%s%s%s", get_regname(reg),
                    debug_print_relarg(reg),
                    debug_print_swizzle(reg->u.swizzle));
    }
    return "Unknown modifier";
}

const char *debug_print_comp(DWORD comp)
{
    switch (comp)
    {
        case BWRITER_COMPARISON_NONE: return "";
        case BWRITER_COMPARISON_GT:   return "_gt";
        case BWRITER_COMPARISON_EQ:   return "_eq";
        case BWRITER_COMPARISON_GE:   return "_ge";
        case BWRITER_COMPARISON_LT:   return "_lt";
        case BWRITER_COMPARISON_NE:   return "_ne";
        case BWRITER_COMPARISON_LE:   return "_le";
        default: return "_unknown";
    }
}

const char *debug_print_opcode(DWORD opcode)
{
    switch (opcode)
    {
        case BWRITERSIO_NOP:          return "nop";
        case BWRITERSIO_MOV:          return "mov";
        case BWRITERSIO_ADD:          return "add";
        case BWRITERSIO_SUB:          return "sub";
        case BWRITERSIO_MAD:          return "mad";
        case BWRITERSIO_MUL:          return "mul";
        case BWRITERSIO_RCP:          return "rcp";
        case BWRITERSIO_RSQ:          return "rsq";
        case BWRITERSIO_DP3:          return "dp3";
        case BWRITERSIO_DP4:          return "dp4";
        case BWRITERSIO_MIN:          return "min";
        case BWRITERSIO_MAX:          return "max";
        case BWRITERSIO_SLT:          return "slt";
        case BWRITERSIO_SGE:          return "sge";
        case BWRITERSIO_EXP:          return "exp";
        case BWRITERSIO_LOG:          return "log";
        case BWRITERSIO_LIT:          return "lit";
        case BWRITERSIO_DST:          return "dst";
        case BWRITERSIO_LRP:          return "lrp";
        case BWRITERSIO_FRC:          return "frc";
        case BWRITERSIO_M4x4:         return "m4x4";
        case BWRITERSIO_M4x3:         return "m4x3";
        case BWRITERSIO_M3x4:         return "m3x4";
        case BWRITERSIO_M3x3:         return "m3x3";
        case BWRITERSIO_M3x2:         return "m3x2";
        case BWRITERSIO_CALL:         return "call";
        case BWRITERSIO_CALLNZ:       return "callnz";
        case BWRITERSIO_LOOP:         return "loop";
        case BWRITERSIO_RET:          return "ret";
        case BWRITERSIO_ENDLOOP:      return "endloop";
        case BWRITERSIO_LABEL:        return "label";
        case BWRITERSIO_DCL:          return "dcl";
        case BWRITERSIO_POW:          return "pow";
        case BWRITERSIO_CRS:          return "crs";
        case BWRITERSIO_SGN:          return "sgn";
        case BWRITERSIO_ABS:          return "abs";
        case BWRITERSIO_NRM:          return "nrm";
        case BWRITERSIO_SINCOS:       return "sincos";
        case BWRITERSIO_REP:          return "rep";
        case BWRITERSIO_ENDREP:       return "endrep";
        case BWRITERSIO_IF:           return "if";
        case BWRITERSIO_IFC:          return "ifc";
        case BWRITERSIO_ELSE:         return "else";
        case BWRITERSIO_ENDIF:        return "endif";
        case BWRITERSIO_BREAK:        return "break";
        case BWRITERSIO_BREAKC:       return "breakc";
        case BWRITERSIO_MOVA:         return "mova";
        case BWRITERSIO_DEFB:         return "defb";
        case BWRITERSIO_DEFI:         return "defi";
        case BWRITERSIO_TEXCOORD:     return "texcoord";
        case BWRITERSIO_TEXKILL:      return "texkill";
        case BWRITERSIO_TEX:          return "tex";
        case BWRITERSIO_TEXBEM:       return "texbem";
        case BWRITERSIO_TEXBEML:      return "texbeml";
        case BWRITERSIO_TEXREG2AR:    return "texreg2ar";
        case BWRITERSIO_TEXREG2GB:    return "texreg2gb";
        case BWRITERSIO_TEXM3x2PAD:   return "texm3x2pad";
        case BWRITERSIO_TEXM3x2TEX:   return "texm3x2tex";
        case BWRITERSIO_TEXM3x3PAD:   return "texm3x3pad";
        case BWRITERSIO_TEXM3x3TEX:   return "texm3x3tex";
        case BWRITERSIO_TEXM3x3SPEC:  return "texm3x3vspec";
        case BWRITERSIO_TEXM3x3VSPEC: return "texm3x3vspec";
        case BWRITERSIO_EXPP:         return "expp";
        case BWRITERSIO_LOGP:         return "logp";
        case BWRITERSIO_CND:          return "cnd";
        case BWRITERSIO_DEF:          return "def";
        case BWRITERSIO_TEXREG2RGB:   return "texreg2rgb";
        case BWRITERSIO_TEXDP3TEX:    return "texdp3tex";
        case BWRITERSIO_TEXM3x2DEPTH: return "texm3x2depth";
        case BWRITERSIO_TEXDP3:       return "texdp3";
        case BWRITERSIO_TEXM3x3:      return "texm3x3";
        case BWRITERSIO_TEXDEPTH:     return "texdepth";
        case BWRITERSIO_CMP:          return "cmp";
        case BWRITERSIO_BEM:          return "bem";
        case BWRITERSIO_DP2ADD:       return "dp2add";
        case BWRITERSIO_DSX:          return "dsx";
        case BWRITERSIO_DSY:          return "dsy";
        case BWRITERSIO_TEXLDD:       return "texldd";
        case BWRITERSIO_SETP:         return "setp";
        case BWRITERSIO_TEXLDL:       return "texldl";
        case BWRITERSIO_BREAKP:       return "breakp";
        case BWRITERSIO_PHASE:        return "phase";

        case BWRITERSIO_TEXLDP:       return "texldp";
        case BWRITERSIO_TEXLDB:       return "texldb";

        default:                      return "unknown";
    }
}

void skip_dword_unknown(const char **ptr, unsigned int count)
{
    unsigned int i;
    DWORD d;

    FIXME("Skipping %u unknown DWORDs:\n", count);
    for (i = 0; i < count; ++i)
    {
        read_dword(ptr, &d);
        FIXME("\t0x%08x\n", d);
    }
}

static void write_dword_unknown(char **ptr, DWORD d)
{
    FIXME("Writing unknown DWORD 0x%08x\n", d);
    write_dword(ptr, d);
}

HRESULT dxbc_add_section(struct dxbc *dxbc, DWORD tag, const char *data, DWORD data_size)
{
    TRACE("dxbc %p, tag %s, size %#x.\n", dxbc, debugstr_an((const char *)&tag, 4), data_size);

    if (dxbc->count >= dxbc->size)
    {
        struct dxbc_section *new_sections;
        DWORD new_size = dxbc->size << 1;

        new_sections = HeapReAlloc(GetProcessHeap(), 0, dxbc->sections, new_size * sizeof(*dxbc->sections));
        if (!new_sections)
        {
            ERR("Failed to allocate dxbc section memory\n");
            return E_OUTOFMEMORY;
        }

        dxbc->sections = new_sections;
        dxbc->size = new_size;
    }

    dxbc->sections[dxbc->count].tag = tag;
    dxbc->sections[dxbc->count].data_size = data_size;
    dxbc->sections[dxbc->count].data = data;
    ++dxbc->count;

    return S_OK;
}

HRESULT dxbc_init(struct dxbc *dxbc, UINT size)
{
    TRACE("dxbc %p, size %u.\n", dxbc, size);

    /* use a good starting value for the size if none specified */
    if (!size) size = 2;

    dxbc->sections = HeapAlloc(GetProcessHeap(), 0, size * sizeof(*dxbc->sections));
    if (!dxbc->sections)
    {
        ERR("Failed to allocate dxbc section memory\n");
        return E_OUTOFMEMORY;
    }

    dxbc->size = size;
    dxbc->count = 0;

    return S_OK;
}

HRESULT dxbc_parse(const char *data, SIZE_T data_size, struct dxbc *dxbc)
{
    const char *ptr = data;
    HRESULT hr;
    unsigned int i;
    DWORD tag, total_size, chunk_count;

    if (!data)
    {
        WARN("No data supplied.\n");
        return E_FAIL;
    }

    read_dword(&ptr, &tag);
    TRACE("tag: %s.\n", debugstr_an((const char *)&tag, 4));

    if (tag != TAG_DXBC)
    {
        WARN("Wrong tag.\n");
        return E_FAIL;
    }

    /* checksum? */
    skip_dword_unknown(&ptr, 4);

    skip_dword_unknown(&ptr, 1);

    read_dword(&ptr, &total_size);
    TRACE("total size: %#x\n", total_size);

    if (data_size != total_size)
    {
        WARN("Wrong size supplied.\n");
        return D3DERR_INVALIDCALL;
    }

    read_dword(&ptr, &chunk_count);
    TRACE("chunk count: %#x\n", chunk_count);

    hr = dxbc_init(dxbc, chunk_count);
    if (FAILED(hr))
    {
        WARN("Failed to init dxbc\n");
        return hr;
    }

    for (i = 0; i < chunk_count; ++i)
    {
        DWORD chunk_tag, chunk_size;
        const char *chunk_ptr;
        DWORD chunk_offset;

        read_dword(&ptr, &chunk_offset);
        TRACE("chunk %u at offset %#x\n", i, chunk_offset);

        chunk_ptr = data + chunk_offset;

        read_dword(&chunk_ptr, &chunk_tag);
        read_dword(&chunk_ptr, &chunk_size);

        hr = dxbc_add_section(dxbc, chunk_tag, chunk_ptr, chunk_size);
        if (FAILED(hr))
        {
            WARN("Failed to add section to dxbc\n");
            return hr;
        }
    }

    return hr;
}

void dxbc_destroy(struct dxbc *dxbc)
{
    TRACE("dxbc %p.\n", dxbc);

    HeapFree(GetProcessHeap(), 0, dxbc->sections);
}

HRESULT dxbc_write_blob(struct dxbc *dxbc, ID3DBlob **blob)
{
    DWORD size = 32, offset = size + 4 * dxbc->count;
    ID3DBlob *object;
    HRESULT hr;
    char *ptr;
    unsigned int i;

    TRACE("dxbc %p, blob %p.\n", dxbc, blob);

    for (i = 0; i < dxbc->count; ++i)
    {
        size += 12 + dxbc->sections[i].data_size;
    }

    hr = D3DCreateBlob(size, &object);
    if (FAILED(hr))
    {
        WARN("Failed to create blob\n");
        return hr;
    }

    ptr = ID3D10Blob_GetBufferPointer(object);

    write_dword(&ptr, TAG_DXBC);

    /* signature(?) */
    write_dword_unknown(&ptr, 0);
    write_dword_unknown(&ptr, 0);
    write_dword_unknown(&ptr, 0);
    write_dword_unknown(&ptr, 0);

    /* seems to be always 1 */
    write_dword_unknown(&ptr, 1);

    /* DXBC size */
    write_dword(&ptr, size);

    /* chunk count */
    write_dword(&ptr, dxbc->count);

    /* write the chunk offsets */
    for (i = 0; i < dxbc->count; ++i)
    {
        write_dword(&ptr, offset);
        offset += 8 + dxbc->sections[i].data_size;
    }

    /* write the chunks */
    for (i = 0; i < dxbc->count; ++i)
    {
        write_dword(&ptr, dxbc->sections[i].tag);
        write_dword(&ptr, dxbc->sections[i].data_size);
        memcpy(ptr, dxbc->sections[i].data, dxbc->sections[i].data_size);
        ptr += dxbc->sections[i].data_size;
    }

    TRACE("Created ID3DBlob %p\n", object);

    *blob = object;

    return S_OK;
}

void compilation_message(struct compilation_messages *msg, const char *fmt, va_list args)
{
    char* buffer;
    int rc, size;

    if (msg->capacity == 0)
    {
        msg->string = d3dcompiler_alloc(MESSAGEBUFFER_INITIAL_SIZE);
        if (msg->string == NULL)
        {
            ERR("Error allocating memory for parser messages\n");
            return;
        }
        msg->capacity = MESSAGEBUFFER_INITIAL_SIZE;
    }

    while (1)
    {
        rc = vsnprintf(msg->string + msg->size,
                msg->capacity - msg->size, fmt, args);

        if (rc < 0 || rc >= msg->capacity - msg->size)
        {
            size = msg->capacity * 2;
            buffer = d3dcompiler_realloc(msg->string, size);
            if (buffer == NULL)
            {
                ERR("Error reallocating memory for parser messages\n");
                return;
            }
            msg->string = buffer;
            msg->capacity = size;
        }
        else
        {
            TRACE("%s", msg->string + msg->size);
            msg->size += rc;
            return;
        }
    }
}

BOOL add_declaration(struct hlsl_scope *scope, struct hlsl_ir_var *decl, BOOL local_var)
{
    struct hlsl_ir_var *var;

    LIST_FOR_EACH_ENTRY(var, &scope->vars, struct hlsl_ir_var, scope_entry)
    {
        if (!strcmp(decl->name, var->name))
            return FALSE;
    }
    if (local_var)
    {
        LIST_FOR_EACH_ENTRY(var, &scope->upper->vars, struct hlsl_ir_var, scope_entry)
        {
            if (!strcmp(decl->name, var->name))
                return FALSE;
        }
    }

    list_add_tail(&scope->vars, &decl->scope_entry);
    return TRUE;
}

struct hlsl_ir_var *get_variable(struct hlsl_scope *scope, const char *name)
{
    struct hlsl_ir_var *var;

    LIST_FOR_EACH_ENTRY(var, &scope->vars, struct hlsl_ir_var, scope_entry)
    {
        if (!strcmp(name, var->name))
            return var;
    }
    if (!scope->upper)
        return NULL;
    return get_variable(scope->upper, name);
}

void free_declaration(struct hlsl_ir_var *decl)
{
    d3dcompiler_free((void *)decl->name);
    d3dcompiler_free((void *)decl->semantic);
    d3dcompiler_free(decl);
}

struct hlsl_type *new_hlsl_type(const char *name, enum hlsl_type_class type_class,
        enum hlsl_base_type base_type, unsigned dimx, unsigned dimy)
{
    struct hlsl_type *type;

    type = d3dcompiler_alloc(sizeof(*type));
    if (!type)
    {
        ERR("Out of memory\n");
        return NULL;
    }
    type->name = name;
    type->type = type_class;
    type->base_type = base_type;
    type->dimx = dimx;
    type->dimy = dimy;

    list_add_tail(&hlsl_ctx.types, &type->entry);

    return type;
}

struct hlsl_type *new_array_type(struct hlsl_type *basic_type, unsigned int array_size)
{
    FIXME("stub.\n");
    return NULL;
}

struct hlsl_type *get_type(struct hlsl_scope *scope, const char *name, BOOL recursive)
{
    FIXME("stub.\n");
    return NULL;
}

BOOL find_function(const char *name)
{
    FIXME("stub.\n");
    return FALSE;
}

struct hlsl_ir_deref *new_var_deref(struct hlsl_ir_var *var)
{
    struct hlsl_ir_deref *deref = d3dcompiler_alloc(sizeof(*deref));

    if (!deref)
    {
        ERR("Out of memory.\n");
        return NULL;
    }
    deref->node.type = HLSL_IR_DEREF;
    deref->node.data_type = var->node.data_type;
    deref->type = HLSL_IR_DEREF_VAR;
    deref->v.var = var;
    return deref;
}

void push_scope(struct hlsl_parse_ctx *ctx)
{
    struct hlsl_scope *new_scope = d3dcompiler_alloc(sizeof(*new_scope));

    if (!new_scope)
    {
        ERR("Out of memory!\n");
        return;
    }
    list_init(&new_scope->vars);
    list_init(&new_scope->types);
    new_scope->upper = ctx->cur_scope;
    ctx->cur_scope = new_scope;
    list_add_tail(&ctx->scopes, &new_scope->entry);
}

BOOL pop_scope(struct hlsl_parse_ctx *ctx)
{
    struct hlsl_scope *prev_scope = ctx->cur_scope->upper;
    if (!prev_scope)
        return FALSE;

    ctx->cur_scope = prev_scope;
    return TRUE;
}

static const char *debug_base_type(const struct hlsl_type *type)
{
    const char *name = "(unknown)";

    switch (type->base_type)
    {
        case HLSL_TYPE_FLOAT:        name = "float";         break;
        case HLSL_TYPE_HALF:         name = "half";          break;
        case HLSL_TYPE_INT:          name = "int";           break;
        case HLSL_TYPE_UINT:         name = "uint";          break;
        case HLSL_TYPE_BOOL:         name = "bool";          break;
        default:
            FIXME("Unhandled case %u\n", type->base_type);
    }
    return name;
}

const char *debug_hlsl_type(const struct hlsl_type *type)
{
    const char *name;

    if (type->name)
        return debugstr_a(type->name);

    if (type->type == HLSL_CLASS_STRUCT)
        name = "<anonymous struct>";
    else
        name = debug_base_type(type);

    if (type->type == HLSL_CLASS_SCALAR)
        return wine_dbg_sprintf("%s", name);
    if (type->type == HLSL_CLASS_VECTOR)
        return wine_dbg_sprintf("vector<%s, %u>", name, type->dimx);
    if (type->type == HLSL_CLASS_MATRIX)
        return wine_dbg_sprintf("matrix<%s, %u, %u>", name, type->dimx, type->dimy);
    return "unexpected_type";
}

const char *debug_modifiers(DWORD modifiers)
{
    char string[110];

    string[0] = 0;
    if (modifiers & HLSL_STORAGE_EXTERN)
        strcat(string, " extern");                       /* 7 */
    if (modifiers & HLSL_STORAGE_NOINTERPOLATION)
        strcat(string, " nointerpolation");              /* 16 */
    if (modifiers & HLSL_MODIFIER_PRECISE)
        strcat(string, " precise");                      /* 8 */
    if (modifiers & HLSL_STORAGE_SHARED)
        strcat(string, " shared");                       /* 7 */
    if (modifiers & HLSL_STORAGE_GROUPSHARED)
        strcat(string, " groupshared");                  /* 12 */
    if (modifiers & HLSL_STORAGE_STATIC)
        strcat(string, " static");                       /* 7 */
    if (modifiers & HLSL_STORAGE_UNIFORM)
        strcat(string, " uniform");                      /* 8 */
    if (modifiers & HLSL_STORAGE_VOLATILE)
        strcat(string, " volatile");                     /* 9 */
    if (modifiers & HLSL_MODIFIER_CONST)
        strcat(string, " const");                        /* 6 */
    if (modifiers & HLSL_MODIFIER_ROW_MAJOR)
        strcat(string, " row_major");                    /* 10 */
    if (modifiers & HLSL_MODIFIER_COLUMN_MAJOR)
        strcat(string, " column_major");                 /* 13 */
    if ((modifiers & (HLSL_MODIFIER_IN | HLSL_MODIFIER_OUT)) == (HLSL_MODIFIER_IN | HLSL_MODIFIER_OUT))
        strcat(string, " inout");                        /* 6 */
    else if (modifiers & HLSL_MODIFIER_IN)
        strcat(string, " in");                           /* 3 */
    else if (modifiers & HLSL_MODIFIER_OUT)
        strcat(string, " out");                          /* 4 */

    return wine_dbg_sprintf("%s", string[0] ? string + 1 : "");
}

static const char *debug_node_type(enum hlsl_ir_node_type type)
{
    const char *names[] =
    {
        "HLSL_IR_VAR",
        "HLSL_IR_CONSTANT",
        "HLSL_IR_DEREF",
    };

    if (type > sizeof(names) / sizeof(names[0]))
    {
        return "Unexpected node type";
    }
    return names[type];
}

void free_hlsl_type(struct hlsl_type *type)
{
    struct hlsl_struct_field *field, *next_field;

    d3dcompiler_free((void *)type->name);
    if (type->type == HLSL_CLASS_STRUCT)
    {
        LIST_FOR_EACH_ENTRY_SAFE(field, next_field, type->e.elements, struct hlsl_struct_field, entry)
        {
            d3dcompiler_free((void *)field->name);
            d3dcompiler_free((void *)field->semantic);
            d3dcompiler_free(field);
        }
    }
    d3dcompiler_free(type);
}

void free_instr_list(struct list *list)
{
    struct hlsl_ir_node *node, *next_node;

    if (!list)
        return;
    LIST_FOR_EACH_ENTRY_SAFE(node, next_node, list, struct hlsl_ir_node, entry)
        free_instr(node);
}

static void free_ir_constant(struct hlsl_ir_constant *constant)
{
    struct hlsl_type *type = constant->node.data_type;
    unsigned int i;
    struct hlsl_ir_constant *field, *next_field;

    switch (type->type)
    {
        case HLSL_CLASS_ARRAY:
            for (i = 0; i < type->e.array.elements_count; ++i)
                free_ir_constant(&constant->v.array_elements[i]);
            d3dcompiler_free(constant->v.array_elements);
            break;
        case HLSL_CLASS_STRUCT:
            LIST_FOR_EACH_ENTRY_SAFE(field, next_field, constant->v.struct_elements, struct hlsl_ir_constant, node.entry)
                free_ir_constant(field);
            break;
        default:
            break;
    }
    d3dcompiler_free(constant);
}

static void free_ir_deref(struct hlsl_ir_deref *deref)
{
    switch (deref->type)
    {
        case HLSL_IR_DEREF_VAR:
            /* Variables are shared among nodes in the tree. */
            break;
        case HLSL_IR_DEREF_ARRAY:
            free_instr(deref->v.array.array);
            free_instr(deref->v.array.index);
            break;
        case HLSL_IR_DEREF_RECORD:
            free_instr(deref->v.record.record);
            d3dcompiler_free((void *)deref->v.record.field);
            break;
    }
    d3dcompiler_free(deref);
}

void free_instr(struct hlsl_ir_node *node)
{
    switch (node->type)
    {
        case HLSL_IR_VAR:
            /* These are freed later on from the scopes. */
            break;
        case HLSL_IR_CONSTANT:
            free_ir_constant(constant_from_node(node));
            break;
        case HLSL_IR_DEREF:
            free_ir_deref(deref_from_node(node));
            break;
        default:
            FIXME("Unsupported node type %s\n", debug_node_type(node->type));
    }
}