dlls/wined3d/vertexshader.c

   1 /*
   2  * shaders implementation
   3  *
   4  * Copyright 2002-2003 Jason Edmeades
   5  * Copyright 2002-2003 Raphael Junqueira
   6  * Copyright 2004 Christian Costa
   7  * Copyright 2005 Oliver Stieber
   8  * Copyright 2006 Ivan Gyurdiev
   9  *
  10  * This library is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2.1 of the License, or (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this library; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  23  */
  24
  25 #include "config.h"
  26
  27 #include <math.h>
  28 #include <stdio.h>
  29
  30 #include "wined3d_private.h"
  31
  32 WINE_DEFAULT_DEBUG_CHANNEL(d3d_shader);
  33
  34 #define GLINFO_LOCATION ((IWineD3DImpl *)(((IWineD3DDeviceImpl *)This->baseShader.device)->wineD3D))->gl_info
  35
  36 /* Shader debugging - Change the following line to enable debugging of software
  37       vertex shaders                                                             */
  38 #if 0 /* Musxt not be 1 in cvs version */
  39 # define VSTRACE(A) TRACE A
  40 # define TRACE_VSVECTOR(name) TRACE( #name "=(%f, %f, %f, %f)\n", name.x, name.y, name.z, name.w)
  41 #else
  42 # define VSTRACE(A)
  43 # define TRACE_VSVECTOR(name)
  44 #endif
  45
  46 /**
  47  * DirectX9 SDK download
  48  *  http://msdn.microsoft.com/library/default.asp?url=/downloads/list/directx.asp
  49  *
  50  * Exploring D3DX
  51  *  http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dndrive/html/directx07162002.asp
  52  *
  53  * Using Vertex Shaders
  54  *  http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dndrive/html/directx02192001.asp
  55  *
  56  * Dx9 New
  57  *  http://msdn.microsoft.com/library/default.asp?url=/library/en-us/directx9_c/directx/graphics/whatsnew.asp
  58  *
  59  * Dx9 Shaders
  60  *  http://msdn.microsoft.com/library/default.asp?url=/library/en-us/directx9_c/directx/graphics/reference/Shaders/VertexShader2_0/VertexShader2_0.asp
  61  *  http://msdn.microsoft.com/library/default.asp?url=/library/en-us/directx9_c/directx/graphics/reference/Shaders/VertexShader2_0/Instructions/Instructions.asp
  62  *  http://msdn.microsoft.com/library/default.asp?url=/library/en-us/directx9_c/directx/graphics/programmingguide/GettingStarted/VertexDeclaration/VertexDeclaration.asp
  63  *  http://msdn.microsoft.com/library/default.asp?url=/library/en-us/directx9_c/directx/graphics/reference/Shaders/VertexShader3_0/VertexShader3_0.asp
  64  *
  65  * Dx9 D3DX
  66  *  http://msdn.microsoft.com/library/default.asp?url=/library/en-us/directx9_c/directx/graphics/programmingguide/advancedtopics/VertexPipe/matrixstack/matrixstack.asp
  67  *
  68  * FVF
  69  *  http://msdn.microsoft.com/library/en-us/directx9_c/directx/graphics/programmingguide/GettingStarted/VertexFormats/vformats.asp
  70  *
  71  * NVIDIA: DX8 Vertex Shader to NV Vertex Program
  72  *  http://developer.nvidia.com/view.asp?IO=vstovp
  73  *
  74  * NVIDIA: Memory Management with VAR
  75  *  http://developer.nvidia.com/view.asp?IO=var_memory_management
  76  */
  77
  78 /* TODO: Vertex and Pixel shaders are almost identicle, the only exception being the way that some of the data is looked up or the availablity of some of the data i.e. some instructions are only valid for pshaders and some for vshaders
  79 because of this the bulk of the software pipeline can be shared between pixel and vertex shaders... and it wouldn't supprise me if the programes can be cross compiled using a large body body shared code */
  80
  81 #define GLNAME_REQUIRE_GLSL  ((const char *)1)
  82
  83 CONST SHADER_OPCODE IWineD3DVertexShaderImpl_shader_ins[] = {
  84     /* This table is not order or position dependent. */
  85
  86     /* Arithmetic */
  87     {WINED3DSIO_NOP,    "nop",  "NOP", 0, 0, vshader_hw_map2gl,   NULL, 0, 0},
  88     {WINED3DSIO_MOV,    "mov",  "MOV", 1, 2, vshader_hw_map2gl,   shader_glsl_mov, 0, 0},
  89     {WINED3DSIO_MOVA,   "mova",  NULL, 1, 2, vshader_hw_map2gl,   shader_glsl_mov, WINED3DVS_VERSION(2,0), -1},
  90     {WINED3DSIO_ADD,    "add",  "ADD", 1, 3, vshader_hw_map2gl,   shader_glsl_arith, 0, 0},
  91     {WINED3DSIO_SUB,    "sub",  "SUB", 1, 3, vshader_hw_map2gl,   shader_glsl_arith, 0, 0},
  92     {WINED3DSIO_MAD,    "mad",  "MAD", 1, 4, vshader_hw_map2gl,   shader_glsl_mad, 0, 0},
  93     {WINED3DSIO_MUL,    "mul",  "MUL", 1, 3, vshader_hw_map2gl,   shader_glsl_arith, 0, 0},
  94     {WINED3DSIO_RCP,    "rcp",  "RCP", 1, 2, vshader_hw_rsq_rcp,  shader_glsl_rcp, 0, 0},
  95     {WINED3DSIO_RSQ,    "rsq",  "RSQ", 1, 2, vshader_hw_rsq_rcp,  shader_glsl_map2gl, 0, 0},
  96     {WINED3DSIO_DP3,    "dp3",  "DP3", 1, 3, vshader_hw_map2gl,   shader_glsl_dot, 0, 0},
  97     {WINED3DSIO_DP4,    "dp4",  "DP4", 1, 3, vshader_hw_map2gl,   shader_glsl_dot, 0, 0},
  98     {WINED3DSIO_MIN,    "min",  "MIN", 1, 3, vshader_hw_map2gl,   shader_glsl_map2gl, 0, 0},
  99     {WINED3DSIO_MAX,    "max",  "MAX", 1, 3, vshader_hw_map2gl,   shader_glsl_map2gl, 0, 0},
 100     {WINED3DSIO_SLT,    "slt",  "SLT", 1, 3, vshader_hw_map2gl,   shader_glsl_compare, 0, 0},
 101     {WINED3DSIO_SGE,    "sge",  "SGE", 1, 3, vshader_hw_map2gl,   shader_glsl_compare, 0, 0},
 102     {WINED3DSIO_ABS,    "abs",  "ABS", 1, 2, vshader_hw_map2gl,   shader_glsl_map2gl, 0, 0},
 103     {WINED3DSIO_EXP,    "exp",  "EX2", 1, 2, vshader_hw_map2gl,   shader_glsl_map2gl, 0, 0},
 104     {WINED3DSIO_LOG,    "log",  "LG2", 1, 2, vshader_hw_map2gl,   shader_glsl_map2gl, 0, 0},
 105     {WINED3DSIO_EXPP,   "expp", "EXP", 1, 2, vshader_hw_map2gl,   shader_glsl_expp, 0, 0},
 106     {WINED3DSIO_LOGP,   "logp", "LOG", 1, 2, vshader_hw_map2gl,   shader_glsl_map2gl, 0, 0},
 107     {WINED3DSIO_LIT,    "lit",  "LIT", 1, 2, vshader_hw_map2gl,   shader_glsl_lit, 0, 0},
 108     {WINED3DSIO_DST,    "dst",  "DST", 1, 3, vshader_hw_map2gl,   shader_glsl_dst, 0, 0},
 109     {WINED3DSIO_LRP,    "lrp",  "LRP", 1, 4, NULL,                shader_glsl_lrp, 0, 0},
 110     {WINED3DSIO_FRC,    "frc",  "FRC", 1, 2, vshader_hw_map2gl,   shader_glsl_map2gl, 0, 0},
 111     {WINED3DSIO_POW,    "pow",  "POW", 1, 3, NULL,                shader_glsl_map2gl, 0, 0},
 112     {WINED3DSIO_CRS,    "crs",  "XPS", 1, 3, NULL,                shader_glsl_cross, 0, 0},
 113     /* TODO: sng can possibly be performed a  s
 114         RCP tmp, vec
 115         MUL out, tmp, vec*/
 116     {WINED3DSIO_SGN,  "sgn",  NULL,  1, 2, NULL,                shader_glsl_map2gl, 0, 0},
 117     /* TODO: xyz normalise can be performed as VS_ARB using one temporary register,
 118         DP3 tmp , vec, vec;
 119         RSQ tmp, tmp.x;
 120         MUL vec.xyz, vec, tmp;
 121     but I think this is better because it accounts for w properly.
 122         DP3 tmp , vec, vec;
 123         RSQ tmp, tmp.x;
 124         MUL vec, vec, tmp;
 125     */
 126     {WINED3DSIO_NRM,    "nrm",      NULL, 1, 2, NULL, shader_glsl_map2gl, 0, 0},
 127     {WINED3DSIO_SINCOS, "sincos",   NULL, 1, 4, NULL, shader_glsl_sincos, WINED3DVS_VERSION(2,0), WINED3DVS_VERSION(2,1)},
 128     {WINED3DSIO_SINCOS, "sincos",   NULL, 1, 2, NULL, shader_glsl_sincos, WINED3DVS_VERSION(3,0), -1},
 129     /* Matrix */
 130     {WINED3DSIO_M4x4,   "m4x4", "undefined", 1, 3, vshader_hw_mnxn, shader_glsl_mnxn, 0, 0},
 131     {WINED3DSIO_M4x3,   "m4x3", "undefined", 1, 3, vshader_hw_mnxn, shader_glsl_mnxn, 0, 0},
 132     {WINED3DSIO_M3x4,   "m3x4", "undefined", 1, 3, vshader_hw_mnxn, shader_glsl_mnxn, 0, 0},
 133     {WINED3DSIO_M3x3,   "m3x3", "undefined", 1, 3, vshader_hw_mnxn, shader_glsl_mnxn, 0, 0},
 134     {WINED3DSIO_M3x2,   "m3x2", "undefined", 1, 3, vshader_hw_mnxn, shader_glsl_mnxn, 0, 0},
 135     /* Declare registers */
 136     {WINED3DSIO_DCL,    "dcl",      NULL,                0, 2, NULL, NULL, 0, 0},
 137     /* Constant definitions */
 138     {WINED3DSIO_DEF,    "def",      NULL,                1, 5, NULL, NULL, 0, 0},
 139     {WINED3DSIO_DEFB,   "defb",     GLNAME_REQUIRE_GLSL, 1, 2, NULL, NULL, 0, 0},
 140     {WINED3DSIO_DEFI,   "defi",     GLNAME_REQUIRE_GLSL, 1, 5, NULL, NULL, 0, 0},
 141     /* Flow control - requires GLSL or software shaders */
 142     {WINED3DSIO_REP ,   "rep",      NULL, 0, 1, NULL, shader_glsl_rep,    WINED3DVS_VERSION(2,0), -1},
 143     {WINED3DSIO_ENDREP, "endrep",   NULL, 0, 0, NULL, shader_glsl_end,    WINED3DVS_VERSION(2,0), -1},
 144     {WINED3DSIO_IF,     "if",       NULL, 0, 1, NULL, shader_glsl_if,     WINED3DVS_VERSION(2,0), -1},
 145     {WINED3DSIO_IFC,    "ifc",      NULL, 0, 2, NULL, shader_glsl_ifc,    WINED3DVS_VERSION(2,1), -1},
 146     {WINED3DSIO_ELSE,   "else",     NULL, 0, 0, NULL, shader_glsl_else,   WINED3DVS_VERSION(2,0), -1},
 147     {WINED3DSIO_ENDIF,  "endif",    NULL, 0, 0, NULL, shader_glsl_end,    WINED3DVS_VERSION(2,0), -1},
 148     {WINED3DSIO_BREAK,  "break",    NULL, 0, 0, NULL, shader_glsl_break,  WINED3DVS_VERSION(2,1), -1},
 149     {WINED3DSIO_BREAKC, "breakc",   NULL, 0, 2, NULL, shader_glsl_breakc, WINED3DVS_VERSION(2,1), -1},
 150     {WINED3DSIO_BREAKP, "breakp",   GLNAME_REQUIRE_GLSL, 0, 1, NULL, NULL, 0, 0},
 151     {WINED3DSIO_CALL,   "call",     NULL, 0, 1, NULL, shader_glsl_call,   WINED3DVS_VERSION(2,0), -1},
 152     {WINED3DSIO_CALLNZ, "callnz",   NULL, 0, 2, NULL, shader_glsl_callnz, WINED3DVS_VERSION(2,0), -1},
 153     {WINED3DSIO_LOOP,   "loop",     NULL, 0, 2, NULL, shader_glsl_loop,   WINED3DVS_VERSION(2,0), -1},
 154     {WINED3DSIO_RET,    "ret",      NULL, 0, 0, NULL, NULL,               WINED3DVS_VERSION(2,0), -1},
 155     {WINED3DSIO_ENDLOOP,"endloop",  NULL, 0, 0, NULL, shader_glsl_end,    WINED3DVS_VERSION(2,0), -1},
 156     {WINED3DSIO_LABEL,  "label",    NULL, 0, 1, NULL, shader_glsl_label,  WINED3DVS_VERSION(2,0), -1},
 157
 158     {WINED3DSIO_SETP,   "setp",     GLNAME_REQUIRE_GLSL, 1, 3, NULL, NULL, 0, 0},
 159     {WINED3DSIO_TEXLDL, "texdl",    GLNAME_REQUIRE_GLSL, 1, 3, NULL, NULL, 0, 0},
 160     {0,                 NULL,       NULL,                0, 0, NULL, NULL, 0, 0}
 161 };
 162
 163 static void vshader_set_limits(
 164       IWineD3DVertexShaderImpl *This) {
 165
 166       This->baseShader.limits.texcoord = 0;
 167       This->baseShader.limits.attributes = 16;
 168       This->baseShader.limits.packed_input = 0;
 169
 170       /* Must match D3DCAPS9.MaxVertexShaderConst: at least 256 for vs_2_0 */
 171       This->baseShader.limits.constant_float = GL_LIMITS(vshader_constantsF);
 172
 173       switch (This->baseShader.hex_version) {
 174           case WINED3DVS_VERSION(1,0):
 175           case WINED3DVS_VERSION(1,1):
 176                    This->baseShader.limits.temporary = 12;
 177                    This->baseShader.limits.constant_bool = 0;
 178                    This->baseShader.limits.constant_int = 0;
 179                    This->baseShader.limits.address = 1;
 180                    This->baseShader.limits.packed_output = 0;
 181                    This->baseShader.limits.sampler = 0;
 182                    This->baseShader.limits.label = 0;
 183                    break;
 184
 185           case WINED3DVS_VERSION(2,0):
 186           case WINED3DVS_VERSION(2,1):
 187                    This->baseShader.limits.temporary = 12;
 188                    This->baseShader.limits.constant_bool = 16;
 189                    This->baseShader.limits.constant_int = 16;
 190                    This->baseShader.limits.address = 1;
 191                    This->baseShader.limits.packed_output = 0;
 192                    This->baseShader.limits.sampler = 0;
 193                    This->baseShader.limits.label = 16;
 194                    break;
 195
 196           case WINED3DVS_VERSION(3,0):
 197                    This->baseShader.limits.temporary = 32;
 198                    This->baseShader.limits.constant_bool = 32;
 199                    This->baseShader.limits.constant_int = 32;
 200                    This->baseShader.limits.address = 1;
 201                    This->baseShader.limits.packed_output = 12;
 202                    This->baseShader.limits.sampler = 4;
 203                    This->baseShader.limits.label = 16; /* FIXME: 2048 */
 204                    break;
 205
 206           default: This->baseShader.limits.temporary = 12;
 207                    This->baseShader.limits.constant_bool = 16;
 208                    This->baseShader.limits.constant_int = 16;
 209                    This->baseShader.limits.address = 1;
 210                    This->baseShader.limits.packed_output = 0;
 211                    This->baseShader.limits.sampler = 0;
 212                    This->baseShader.limits.label = 16;
 213                    FIXME("Unrecognized vertex shader version %#x\n",
 214                        This->baseShader.hex_version);
 215       }
 216 }
 217
 218 /* This is an internal function,
 219  * used to create fake semantics for shaders
 220  * that don't have them - d3d8 shaders where the declaration
 221  * stores the register for each input
 222  */
 223 static void vshader_set_input(
 224     IWineD3DVertexShaderImpl* This,
 225     unsigned int regnum,
 226     BYTE usage, BYTE usage_idx) {
 227
 228     /* Fake usage: set reserved bit, usage, usage_idx */
 229     DWORD usage_token = (0x1 << 31) |
 230         (usage << WINED3DSP_DCL_USAGE_SHIFT) | (usage_idx << WINED3DSP_DCL_USAGEINDEX_SHIFT);
 231
 232     /* Fake register; set reserved bit, regnum, type: input, wmask: all */
 233     DWORD reg_token = (0x1 << 31) |
 234         WINED3DSP_WRITEMASK_ALL | (WINED3DSPR_INPUT << WINED3DSP_REGTYPE_SHIFT) | regnum;
 235
 236     This->semantics_in[regnum].usage = usage_token;
 237     This->semantics_in[regnum].reg = reg_token;
 238 }
 239
 240 static BOOL match_usage(BYTE usage1, BYTE usage_idx1, BYTE usage2, BYTE usage_idx2) {
 241     if (usage_idx1 != usage_idx2) return FALSE;
 242     if (usage1 == usage2) return TRUE;
 243     if (usage1 == WINED3DDECLUSAGE_POSITION && usage2 == WINED3DDECLUSAGE_POSITIONT) return TRUE;
 244     if (usage2 == WINED3DDECLUSAGE_POSITION && usage1 == WINED3DDECLUSAGE_POSITIONT) return TRUE;
 245
 246     return FALSE;
 247 }
 248
 249 BOOL vshader_get_input(
 250     IWineD3DVertexShader* iface,
 251     BYTE usage_req, BYTE usage_idx_req,
 252     unsigned int* regnum) {
 253
 254     IWineD3DVertexShaderImpl* This = (IWineD3DVertexShaderImpl*) iface;
 255     int i;
 256
 257     for (i = 0; i < MAX_ATTRIBS; i++) {
 258         DWORD usage_token = This->semantics_in[i].usage;
 259         DWORD usage = (usage_token & WINED3DSP_DCL_USAGE_MASK) >> WINED3DSP_DCL_USAGE_SHIFT;
 260         DWORD usage_idx = (usage_token & WINED3DSP_DCL_USAGEINDEX_MASK) >> WINED3DSP_DCL_USAGEINDEX_SHIFT;
 261
 262         if (usage_token && match_usage(usage, usage_idx, usage_req, usage_idx_req)) {
 263             *regnum = i;
 264             return TRUE;
 265         }
 266     }
 267     return FALSE;
 268 }
 269
 270 BOOL vshader_input_is_color(
 271     IWineD3DVertexShader* iface,
 272     unsigned int regnum) {
 273
 274     IWineD3DVertexShaderImpl* This = (IWineD3DVertexShaderImpl*) iface;
 275     IWineD3DDeviceImpl* deviceImpl = (IWineD3DDeviceImpl*) This->baseShader.device;
 276     IWineD3DVertexDeclarationImpl *vertexDeclaration = (IWineD3DVertexDeclarationImpl *)deviceImpl->stateBlock->vertexDecl;
 277
 278     DWORD usage_token = This->semantics_in[regnum].usage;
 279     DWORD usage = (usage_token & WINED3DSP_DCL_USAGE_MASK) >> WINED3DSP_DCL_USAGE_SHIFT;
 280     DWORD usage_idx = (usage_token & WINED3DSP_DCL_USAGEINDEX_MASK) >> WINED3DSP_DCL_USAGEINDEX_SHIFT;
 281
 282     if (vertexDeclaration) {
 283         int i;
 284         /* Find the declaration element that matches our register, then check
 285          * if it has D3DCOLOR as it's type. This works for both d3d8 and d3d9. */
 286         for (i = 0; i < vertexDeclaration->declarationWNumElements-1; ++i) {
 287             WINED3DVERTEXELEMENT *element = vertexDeclaration->pDeclarationWine + i;
 288             if (match_usage(element->Usage, element->UsageIndex, usage, usage_idx)) {
 289                 return element->Type == WINED3DDECLTYPE_D3DCOLOR;
 290             }
 291         }
 292     }
 293
 294     ERR("Either no vertexdeclaration present, or register not matched. This should never happen.\n");
 295     return FALSE;
 296 }
 297
 298 /** Generate a vertex shader string using either GL_VERTEX_PROGRAM_ARB
 299     or GLSL and send it to the card */
 300 static VOID IWineD3DVertexShaderImpl_GenerateShader(
 301     IWineD3DVertexShader *iface,
 302     shader_reg_maps* reg_maps,
 303     CONST DWORD *pFunction) {
 304
 305     IWineD3DVertexShaderImpl *This = (IWineD3DVertexShaderImpl *)iface;
 306     SHADER_BUFFER buffer;
 307
 308 #if 0 /* FIXME: Use the buffer that is held by the device, this is ok since fixups will be skipped for software shaders
 309         it also requires entering a critical section but cuts down the runtime footprint of wined3d and any memory fragmentation that may occur... */
 310     if (This->device->fixupVertexBufferSize < SHADER_PGMSIZE) {
 311         HeapFree(GetProcessHeap(), 0, This->fixupVertexBuffer);
 312         This->fixupVertexBuffer = HeapAlloc(GetProcessHeap() , 0, SHADER_PGMSIZE);
 313         This->fixupVertexBufferSize = PGMSIZE;
 314         This->fixupVertexBuffer[0] = 0;
 315     }
 316     buffer.buffer = This->device->fixupVertexBuffer;
 317 #else
 318     buffer.buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, SHADER_PGMSIZE);
 319 #endif
 320     buffer.bsize = 0;
 321     buffer.lineNo = 0;
 322     buffer.newline = TRUE;
 323
 324     if (This->baseShader.shader_mode == SHADER_GLSL) {
 325
 326         /* Create the hw GLSL shader program and assign it as the baseShader.prgId */
 327         GLhandleARB shader_obj = GL_EXTCALL(glCreateShaderObjectARB(GL_VERTEX_SHADER_ARB));
 328
 329         /* Base Declarations */
 330         shader_generate_glsl_declarations( (IWineD3DBaseShader*) This, reg_maps, &buffer, &GLINFO_LOCATION);
 331
 332         /* Base Shader Body */
 333         shader_generate_main( (IWineD3DBaseShader*) This, &buffer, reg_maps, pFunction);
 334
 335         /* Unpack 3.0 outputs */
 336         if (This->baseShader.hex_version >= WINED3DVS_VERSION(3,0))
 337             vshader_glsl_output_unpack(&buffer, This->semantics_out);
 338
 339         /* If this shader doesn't use fog copy the z coord to the fog coord so that we can use table fog */
 340         if (reg_maps->fog)
 341             This->usesFog = 1;
 342         else
 343             shader_addline(&buffer, "gl_FogFragCoord = gl_Position.z;\n");
 344
 345         /* Write the final position.
 346          *
 347          * OpenGL coordinates specify the center of the pixel while d3d coords specify
 348          * the corner. The offsets are stored in z and w in the 2nd row of the projection
 349          * matrix to avoid wasting a free shader constant. Add them to the w and z coord
 350          * of the 2nd row
 351          */
 352         shader_addline(&buffer, "gl_Position.x = gl_Position.x + posFixup[2];\n");
 353         shader_addline(&buffer, "gl_Position.y = gl_Position.y + posFixup[3];\n");
 354         /* Account for any inverted textures (render to texture case) by reversing the y coordinate
 355          *  (this is handled in drawPrim() when it sets the MODELVIEW and PROJECTION matrices)
 356          */
 357         shader_addline(&buffer, "gl_Position.y = gl_Position.y * posFixup[1];\n");
 358
 359         shader_addline(&buffer, "}\n");
 360
 361         TRACE("Compiling shader object %u\n", shader_obj);
 362         GL_EXTCALL(glShaderSourceARB(shader_obj, 1, (const char**)&buffer.buffer, NULL));
 363         GL_EXTCALL(glCompileShaderARB(shader_obj));
 364         print_glsl_info_log(&GLINFO_LOCATION, shader_obj);
 365
 366         /* Store the shader object */
 367         This->baseShader.prgId = shader_obj;
 368
 369     } else if (This->baseShader.shader_mode == SHADER_ARB) {
 370
 371         /*  Create the hw ARB shader */
 372         shader_addline(&buffer, "!!ARBvp1.0\n");
 373
 374         /* Mesa supports only 95 constants */
 375         if (GL_VEND(MESA) || GL_VEND(WINE))
 376             This->baseShader.limits.constant_float =
 377                 min(95, This->baseShader.limits.constant_float);
 378
 379         /* Base Declarations */
 380         shader_generate_arb_declarations( (IWineD3DBaseShader*) This, reg_maps, &buffer, &GLINFO_LOCATION);
 381
 382         /* We need a constant to fixup the final position */
 383         shader_addline(&buffer, "PARAM posFixup = program.env[%d];\n", ARB_SHADER_PRIVCONST_POS);
 384
 385         /* Base Shader Body */
 386         shader_generate_main( (IWineD3DBaseShader*) This, &buffer, reg_maps, pFunction);
 387
 388         /* If this shader doesn't use fog copy the z coord to the fog coord so that we can use table fog */
 389         if (reg_maps->fog)
 390             This->usesFog = 1;
 391         else
 392             shader_addline(&buffer, "MOV result.fogcoord, TMP_OUT.z;\n");
 393
 394         /* Write the final position.
 395          *
 396          * OpenGL coordinates specify the center of the pixel while d3d coords specify
 397          * the corner. The offsets are stored in the 2nd row of the projection matrix,
 398          * the x offset in z and the y offset in w. Add them to the resulting position
 399          */
 400         shader_addline(&buffer, "ADD TMP_OUT.x, TMP_OUT.x, posFixup.z;\n");
 401         shader_addline(&buffer, "ADD TMP_OUT.y, TMP_OUT.y, posFixup.w;\n");
 402         /* Account for any inverted textures (render to texture case) by reversing the y coordinate
 403          *  (this is handled in drawPrim() when it sets the MODELVIEW and PROJECTION matrices)
 404          */
 405         shader_addline(&buffer, "MUL TMP_OUT.y, TMP_OUT.y, posFixup.y;\n");
 406
 407         shader_addline(&buffer, "MOV result.position, TMP_OUT;\n");
 408
 409         shader_addline(&buffer, "END\n");
 410
 411         /* TODO: change to resource.glObjectHandle or something like that */
 412         GL_EXTCALL(glGenProgramsARB(1, &This->baseShader.prgId));
 413
 414         TRACE("Creating a hw vertex shader, prg=%d\n", This->baseShader.prgId);
 415         GL_EXTCALL(glBindProgramARB(GL_VERTEX_PROGRAM_ARB, This->baseShader.prgId));
 416
 417         TRACE("Created hw vertex shader, prg=%d\n", This->baseShader.prgId);
 418         /* Create the program and check for errors */
 419         GL_EXTCALL(glProgramStringARB(GL_VERTEX_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
 420             buffer.bsize, buffer.buffer));
 421
 422         if (glGetError() == GL_INVALID_OPERATION) {
 423             GLint errPos;
 424             glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &errPos);
 425             FIXME("HW VertexShader Error at position %d: %s\n",
 426                   errPos, debugstr_a((const char *)glGetString(GL_PROGRAM_ERROR_STRING_ARB)));
 427             This->baseShader.prgId = -1;
 428         }
 429     }
 430
 431 #if 1 /* if were using the data buffer of device then we don't need to free it */
 432   HeapFree(GetProcessHeap(), 0, buffer.buffer);
 433 #endif
 434 }
 435
 436 /* *******************************************
 437    IWineD3DVertexShader IUnknown parts follow
 438    ******************************************* */
 439 static HRESULT WINAPI IWineD3DVertexShaderImpl_QueryInterface(IWineD3DVertexShader *iface, REFIID riid, LPVOID *ppobj)
 440 {
 441     IWineD3DVertexShaderImpl *This = (IWineD3DVertexShaderImpl *)iface;
 442     TRACE("(%p)->(%s,%p)\n",This,debugstr_guid(riid),ppobj);
 443     if (IsEqualGUID(riid, &IID_IUnknown)
 444         || IsEqualGUID(riid, &IID_IWineD3DBase)
 445         || IsEqualGUID(riid, &IID_IWineD3DBaseShader)
 446         || IsEqualGUID(riid, &IID_IWineD3DVertexShader)) {
 447         IUnknown_AddRef(iface);
 448         *ppobj = This;
 449         return S_OK;
 450     }
 451     *ppobj = NULL;
 452     return E_NOINTERFACE;
 453 }
 454
 455 static ULONG WINAPI IWineD3DVertexShaderImpl_AddRef(IWineD3DVertexShader *iface) {
 456     IWineD3DVertexShaderImpl *This = (IWineD3DVertexShaderImpl *)iface;
 457     TRACE("(%p) : AddRef increasing from %d\n", This, This->ref);
 458     return InterlockedIncrement(&This->ref);
 459 }
 460
 461 static ULONG WINAPI IWineD3DVertexShaderImpl_Release(IWineD3DVertexShader *iface) {
 462     IWineD3DVertexShaderImpl *This = (IWineD3DVertexShaderImpl *)iface;
 463     ULONG ref;
 464     TRACE("(%p) : Releasing from %d\n", This, This->ref);
 465     ref = InterlockedDecrement(&This->ref);
 466     if (ref == 0) {
 467         if(iface == ((IWineD3DDeviceImpl *) This->baseShader.device)->stateBlock->vertexShader) {
 468             /* See comment in PixelShader::Release */
 469             IWineD3DDeviceImpl_MarkStateDirty((IWineD3DDeviceImpl *) This->baseShader.device, STATE_VSHADER);
 470         }
 471
 472         if (This->baseShader.shader_mode == SHADER_GLSL && This->baseShader.prgId != 0) {
 473             struct list *linked_programs = &This->baseShader.linked_programs;
 474
 475             TRACE("Deleting linked programs\n");
 476             if (linked_programs->next) {
 477                 struct glsl_shader_prog_link *entry, *entry2;
 478                 LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, linked_programs, struct glsl_shader_prog_link, vshader_entry) {
 479                     delete_glsl_program_entry(This->baseShader.device, entry);
 480                 }
 481             }
 482
 483             TRACE("Deleting shader object %u\n", This->baseShader.prgId);
 484             GL_EXTCALL(glDeleteObjectARB(This->baseShader.prgId));
 485             checkGLcall("glDeleteObjectARB");
 486         }
 487         shader_delete_constant_list(&This->baseShader.constantsF);
 488         shader_delete_constant_list(&This->baseShader.constantsB);
 489         shader_delete_constant_list(&This->baseShader.constantsI);
 490         HeapFree(GetProcessHeap(), 0, This);
 491
 492     }
 493     return ref;
 494 }
 495
 496 /* *******************************************
 497    IWineD3DVertexShader IWineD3DVertexShader parts follow
 498    ******************************************* */
 499
 500 static HRESULT WINAPI IWineD3DVertexShaderImpl_GetParent(IWineD3DVertexShader *iface, IUnknown** parent){
 501     IWineD3DVertexShaderImpl *This = (IWineD3DVertexShaderImpl *)iface;
 502
 503     *parent = This->parent;
 504     IUnknown_AddRef(*parent);
 505     TRACE("(%p) : returning %p\n", This, *parent);
 506     return WINED3D_OK;
 507 }
 508
 509 static HRESULT WINAPI IWineD3DVertexShaderImpl_GetDevice(IWineD3DVertexShader* iface, IWineD3DDevice **pDevice){
 510     IWineD3DVertexShaderImpl *This = (IWineD3DVertexShaderImpl *)iface;
 511     IWineD3DDevice_AddRef(This->baseShader.device);
 512     *pDevice = This->baseShader.device;
 513     TRACE("(%p) returning %p\n", This, *pDevice);
 514     return WINED3D_OK;
 515 }
 516
 517 static HRESULT WINAPI IWineD3DVertexShaderImpl_GetFunction(IWineD3DVertexShader* impl, VOID* pData, UINT* pSizeOfData) {
 518     IWineD3DVertexShaderImpl *This = (IWineD3DVertexShaderImpl *)impl;
 519     TRACE("(%p) : pData(%p), pSizeOfData(%p)\n", This, pData, pSizeOfData);
 520
 521     if (NULL == pData) {
 522         *pSizeOfData = This->baseShader.functionLength;
 523         return WINED3D_OK;
 524     }
 525     if (*pSizeOfData < This->baseShader.functionLength) {
 526         /* MSDN claims (for d3d8 at least) that if *pSizeOfData is smaller
 527          * than the required size we should write the required size and
 528          * return D3DERR_MOREDATA. That's not actually true. */
 529         return WINED3DERR_INVALIDCALL;
 530     }
 531     if (NULL == This->baseShader.function) { /* no function defined */
 532         TRACE("(%p) : GetFunction no User Function defined using NULL to %p\n", This, pData);
 533         (*(DWORD **) pData) = NULL;
 534     } else {
 535         if(This->baseShader.functionLength == 0){
 536
 537         }
 538         TRACE("(%p) : GetFunction copying to %p\n", This, pData);
 539         memcpy(pData, This->baseShader.function, This->baseShader.functionLength);
 540     }
 541     return WINED3D_OK;
 542 }
 543
 544 /* Note that for vertex shaders CompileShader isn't called until the
 545  * shader is first used. The reason for this is that we need the vertex
 546  * declaration the shader will be used with in order to determine if
 547  * the data in a register is of type D3DCOLOR, and needs swizzling. */
 548 static HRESULT WINAPI IWineD3DVertexShaderImpl_SetFunction(IWineD3DVertexShader *iface, CONST DWORD *pFunction) {
 549
 550     IWineD3DVertexShaderImpl *This =(IWineD3DVertexShaderImpl *)iface;
 551     IWineD3DDeviceImpl *deviceImpl = (IWineD3DDeviceImpl *) This->baseShader.device;
 552     HRESULT hr;
 553     shader_reg_maps *reg_maps = &This->baseShader.reg_maps;
 554
 555     TRACE("(%p) : pFunction %p\n", iface, pFunction);
 556
 557     /* First pass: trace shader */
 558     shader_trace_init((IWineD3DBaseShader*) This, pFunction);
 559     vshader_set_limits(This);
 560
 561     /* Initialize immediate constant lists */
 562     list_init(&This->baseShader.constantsF);
 563     list_init(&This->baseShader.constantsB);
 564     list_init(&This->baseShader.constantsI);
 565
 566     /* Second pass: figure out registers used, semantics, etc.. */
 567     memset(reg_maps, 0, sizeof(shader_reg_maps));
 568     hr = shader_get_registers_used((IWineD3DBaseShader*) This, reg_maps,
 569        This->semantics_in, This->semantics_out, pFunction, deviceImpl->stateBlock);
 570     if (hr != WINED3D_OK) return hr;
 571
 572     This->baseShader.shader_mode = deviceImpl->vs_selected_mode;
 573
 574     /* copy the function ... because it will certainly be released by application */
 575     if (NULL != pFunction) {
 576         void *function;
 577
 578         function = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, This->baseShader.functionLength);
 579         if (!function) return E_OUTOFMEMORY;
 580         memcpy(function, pFunction, This->baseShader.functionLength);
 581         This->baseShader.function = function;
 582     } else {
 583         This->baseShader.function = NULL;
 584     }
 585
 586     return WINED3D_OK;
 587 }
 588
 589 /* Preload semantics for d3d8 shaders */
 590 static void WINAPI IWineD3DVertexShaderImpl_FakeSemantics(IWineD3DVertexShader *iface, IWineD3DVertexDeclaration *vertex_declaration) {
 591     IWineD3DVertexShaderImpl *This =(IWineD3DVertexShaderImpl *)iface;
 592     IWineD3DVertexDeclarationImpl* vdecl = (IWineD3DVertexDeclarationImpl*)vertex_declaration;
 593
 594     int i;
 595     for (i = 0; i < vdecl->declarationWNumElements - 1; ++i) {
 596         WINED3DVERTEXELEMENT* element = vdecl->pDeclarationWine + i;
 597         vshader_set_input(This, element->Reg, element->Usage, element->UsageIndex);
 598     }
 599 }
 600
 601 /* Set local constants for d3d8 shaders */
 602 static HRESULT WINAPI IWIneD3DVertexShaderImpl_SetLocalConstantsF(IWineD3DVertexShader *iface,
 603         UINT start_idx, const float *src_data, UINT count) {
 604     IWineD3DVertexShaderImpl *This =(IWineD3DVertexShaderImpl *)iface;
 605     UINT i, end_idx;
 606
 607     TRACE("(%p) : start_idx %u, src_data %p, count %u\n", This, start_idx, src_data, count);
 608
 609     end_idx = start_idx + count;
 610     if (end_idx > GL_LIMITS(vshader_constantsF)) {
 611         WARN("end_idx %u > float constants limit %u\n", end_idx, GL_LIMITS(vshader_constantsF));
 612         end_idx = GL_LIMITS(vshader_constantsF);
 613     }
 614
 615     for (i = start_idx; i < end_idx; ++i) {
 616         local_constant* lconst = HeapAlloc(GetProcessHeap(), 0, sizeof(local_constant));
 617         if (!lconst) return E_OUTOFMEMORY;
 618
 619         lconst->idx = i;
 620         CopyMemory(lconst->value, src_data + i * 4, 4 * sizeof(float));
 621         list_add_head(&This->baseShader.constantsF, &lconst->entry);
 622     }
 623
 624     return WINED3D_OK;
 625 }
 626
 627 static HRESULT WINAPI IWineD3DVertexShaderImpl_CompileShader(IWineD3DVertexShader *iface) {
 628     IWineD3DVertexShaderImpl *This = (IWineD3DVertexShaderImpl *)iface;
 629     CONST DWORD *function = This->baseShader.function;
 630
 631     TRACE("(%p) : function %p\n", iface, function);
 632
 633     /* We're already compiled. */
 634     if (This->baseShader.is_compiled) return WINED3D_OK;
 635
 636     /* We don't need to compile */
 637     if (!function) {
 638         This->baseShader.is_compiled = TRUE;
 639         return WINED3D_OK;
 640     }
 641
 642     /* Generate the HW shader */
 643     TRACE("(%p) : Generating hardware program\n", This);
 644     IWineD3DVertexShaderImpl_GenerateShader(iface, &This->baseShader.reg_maps, function);
 645
 646     This->baseShader.is_compiled = TRUE;
 647
 648     return WINED3D_OK;
 649 }
 650
 651 const IWineD3DVertexShaderVtbl IWineD3DVertexShader_Vtbl =
 652 {
 653     /*** IUnknown methods ***/
 654     IWineD3DVertexShaderImpl_QueryInterface,
 655     IWineD3DVertexShaderImpl_AddRef,
 656     IWineD3DVertexShaderImpl_Release,
 657     /*** IWineD3DBase methods ***/
 658     IWineD3DVertexShaderImpl_GetParent,
 659     /*** IWineD3DBaseShader methods ***/
 660     IWineD3DVertexShaderImpl_SetFunction,
 661     IWineD3DVertexShaderImpl_CompileShader,
 662     /*** IWineD3DVertexShader methods ***/
 663     IWineD3DVertexShaderImpl_GetDevice,
 664     IWineD3DVertexShaderImpl_GetFunction,
 665     IWineD3DVertexShaderImpl_FakeSemantics,
 666     IWIneD3DVertexShaderImpl_SetLocalConstantsF
 667 };