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     /* HACK
 432      * The ATI Linux driver looses stream source information when compiling a shader. This makes
 433      * sure things are restored properly
 434      */
 435     IWineD3DDeviceImpl_MarkStateDirty((IWineD3DDeviceImpl *) This->baseShader.device, STATE_VDECL);
 436
 437 #if 1 /* if were using the data buffer of device then we don't need to free it */
 438   HeapFree(GetProcessHeap(), 0, buffer.buffer);
 439 #endif
 440 }
 441
 442 /* *******************************************
 443    IWineD3DVertexShader IUnknown parts follow
 444    ******************************************* */
 445 static HRESULT WINAPI IWineD3DVertexShaderImpl_QueryInterface(IWineD3DVertexShader *iface, REFIID riid, LPVOID *ppobj)
 446 {
 447     IWineD3DVertexShaderImpl *This = (IWineD3DVertexShaderImpl *)iface;
 448     TRACE("(%p)->(%s,%p)\n",This,debugstr_guid(riid),ppobj);
 449     if (IsEqualGUID(riid, &IID_IUnknown)
 450         || IsEqualGUID(riid, &IID_IWineD3DBase)
 451         || IsEqualGUID(riid, &IID_IWineD3DBaseShader)
 452         || IsEqualGUID(riid, &IID_IWineD3DVertexShader)) {
 453         IUnknown_AddRef(iface);
 454         *ppobj = This;
 455         return S_OK;
 456     }
 457     *ppobj = NULL;
 458     return E_NOINTERFACE;
 459 }
 460
 461 static ULONG WINAPI IWineD3DVertexShaderImpl_AddRef(IWineD3DVertexShader *iface) {
 462     IWineD3DVertexShaderImpl *This = (IWineD3DVertexShaderImpl *)iface;
 463     TRACE("(%p) : AddRef increasing from %d\n", This, This->ref);
 464     return InterlockedIncrement(&This->ref);
 465 }
 466
 467 static ULONG WINAPI IWineD3DVertexShaderImpl_Release(IWineD3DVertexShader *iface) {
 468     IWineD3DVertexShaderImpl *This = (IWineD3DVertexShaderImpl *)iface;
 469     ULONG ref;
 470     TRACE("(%p) : Releasing from %d\n", This, This->ref);
 471     ref = InterlockedDecrement(&This->ref);
 472     if (ref == 0) {
 473         if (This->baseShader.shader_mode == SHADER_GLSL && This->baseShader.prgId != 0) {
 474             struct list *linked_programs = &This->baseShader.linked_programs;
 475
 476             TRACE("Deleting linked programs\n");
 477             if (linked_programs->next) {
 478                 struct glsl_shader_prog_link *entry, *entry2;
 479                 LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, linked_programs, struct glsl_shader_prog_link, vshader_entry) {
 480                     delete_glsl_program_entry(This->baseShader.device, entry);
 481                 }
 482             }
 483
 484             TRACE("Deleting shader object %u\n", This->baseShader.prgId);
 485             GL_EXTCALL(glDeleteObjectARB(This->baseShader.prgId));
 486             checkGLcall("glDeleteObjectARB");
 487         }
 488         shader_delete_constant_list(&This->baseShader.constantsF);
 489         shader_delete_constant_list(&This->baseShader.constantsB);
 490         shader_delete_constant_list(&This->baseShader.constantsI);
 491         HeapFree(GetProcessHeap(), 0, This);
 492
 493     }
 494     return ref;
 495 }
 496
 497 /* *******************************************
 498    IWineD3DVertexShader IWineD3DVertexShader parts follow
 499    ******************************************* */
 500
 501 static HRESULT WINAPI IWineD3DVertexShaderImpl_GetParent(IWineD3DVertexShader *iface, IUnknown** parent){
 502     IWineD3DVertexShaderImpl *This = (IWineD3DVertexShaderImpl *)iface;
 503
 504     *parent = This->parent;
 505     IUnknown_AddRef(*parent);
 506     TRACE("(%p) : returning %p\n", This, *parent);
 507     return WINED3D_OK;
 508 }
 509
 510 static HRESULT WINAPI IWineD3DVertexShaderImpl_GetDevice(IWineD3DVertexShader* iface, IWineD3DDevice **pDevice){
 511     IWineD3DVertexShaderImpl *This = (IWineD3DVertexShaderImpl *)iface;
 512     IWineD3DDevice_AddRef(This->baseShader.device);
 513     *pDevice = This->baseShader.device;
 514     TRACE("(%p) returning %p\n", This, *pDevice);
 515     return WINED3D_OK;
 516 }
 517
 518 static HRESULT WINAPI IWineD3DVertexShaderImpl_GetFunction(IWineD3DVertexShader* impl, VOID* pData, UINT* pSizeOfData) {
 519     IWineD3DVertexShaderImpl *This = (IWineD3DVertexShaderImpl *)impl;
 520     TRACE("(%p) : pData(%p), pSizeOfData(%p)\n", This, pData, pSizeOfData);
 521
 522     if (NULL == pData) {
 523         *pSizeOfData = This->baseShader.functionLength;
 524         return WINED3D_OK;
 525     }
 526     if (*pSizeOfData < This->baseShader.functionLength) {
 527         /* MSDN claims (for d3d8 at least) that if *pSizeOfData is smaller
 528          * than the required size we should write the required size and
 529          * return D3DERR_MOREDATA. That's not actually true. */
 530         return WINED3DERR_INVALIDCALL;
 531     }
 532     if (NULL == This->baseShader.function) { /* no function defined */
 533         TRACE("(%p) : GetFunction no User Function defined using NULL to %p\n", This, pData);
 534         (*(DWORD **) pData) = NULL;
 535     } else {
 536         if(This->baseShader.functionLength == 0){
 537
 538         }
 539         TRACE("(%p) : GetFunction copying to %p\n", This, pData);
 540         memcpy(pData, This->baseShader.function, This->baseShader.functionLength);
 541     }
 542     return WINED3D_OK;
 543 }
 544
 545 /* Note that for vertex shaders CompileShader isn't called until the
 546  * shader is first used. The reason for this is that we need the vertex
 547  * declaration the shader will be used with in order to determine if
 548  * the data in a register is of type D3DCOLOR, and needs swizzling. */
 549 static HRESULT WINAPI IWineD3DVertexShaderImpl_SetFunction(IWineD3DVertexShader *iface, CONST DWORD *pFunction) {
 550
 551     IWineD3DVertexShaderImpl *This =(IWineD3DVertexShaderImpl *)iface;
 552     IWineD3DDeviceImpl *deviceImpl = (IWineD3DDeviceImpl *) This->baseShader.device;
 553     HRESULT hr;
 554     shader_reg_maps *reg_maps = &This->baseShader.reg_maps;
 555
 556     TRACE("(%p) : pFunction %p\n", iface, pFunction);
 557
 558     /* First pass: trace shader */
 559     shader_trace_init((IWineD3DBaseShader*) This, pFunction);
 560     vshader_set_limits(This);
 561
 562     /* Initialize immediate constant lists */
 563     list_init(&This->baseShader.constantsF);
 564     list_init(&This->baseShader.constantsB);
 565     list_init(&This->baseShader.constantsI);
 566
 567     /* Second pass: figure out registers used, semantics, etc.. */
 568     memset(reg_maps, 0, sizeof(shader_reg_maps));
 569     hr = shader_get_registers_used((IWineD3DBaseShader*) This, reg_maps,
 570        This->semantics_in, This->semantics_out, pFunction, deviceImpl->stateBlock);
 571     if (hr != WINED3D_OK) return hr;
 572
 573     This->baseShader.shader_mode = deviceImpl->vs_selected_mode;
 574
 575     /* copy the function ... because it will certainly be released by application */
 576     if (NULL != pFunction) {
 577         void *function;
 578
 579         function = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, This->baseShader.functionLength);
 580         if (!function) return E_OUTOFMEMORY;
 581         memcpy(function, pFunction, This->baseShader.functionLength);
 582         This->baseShader.function = function;
 583     } else {
 584         This->baseShader.function = NULL;
 585     }
 586
 587     return WINED3D_OK;
 588 }
 589
 590 /* Preload semantics for d3d8 shaders */
 591 static void WINAPI IWineD3DVertexShaderImpl_FakeSemantics(IWineD3DVertexShader *iface, IWineD3DVertexDeclaration *vertex_declaration) {
 592     IWineD3DVertexShaderImpl *This =(IWineD3DVertexShaderImpl *)iface;
 593     IWineD3DVertexDeclarationImpl* vdecl = (IWineD3DVertexDeclarationImpl*)vertex_declaration;
 594
 595     int i;
 596     for (i = 0; i < vdecl->declarationWNumElements - 1; ++i) {
 597         WINED3DVERTEXELEMENT* element = vdecl->pDeclarationWine + i;
 598         vshader_set_input(This, element->Reg, element->Usage, element->UsageIndex);
 599     }
 600 }
 601
 602 /* Set local constants for d3d8 shaders */
 603 static HRESULT WINAPI IWIneD3DVertexShaderImpl_SetLocalConstantsF(IWineD3DVertexShader *iface,
 604         UINT start_idx, const float *src_data, UINT count) {
 605     IWineD3DVertexShaderImpl *This =(IWineD3DVertexShaderImpl *)iface;
 606     UINT i, end_idx;
 607
 608     TRACE("(%p) : start_idx %u, src_data %p, count %u\n", This, start_idx, src_data, count);
 609
 610     end_idx = start_idx + count;
 611     if (end_idx > GL_LIMITS(vshader_constantsF)) {
 612         WARN("end_idx %u > float constants limit %u\n", end_idx, GL_LIMITS(vshader_constantsF));
 613         end_idx = GL_LIMITS(vshader_constantsF);
 614     }
 615
 616     for (i = start_idx; i < end_idx; ++i) {
 617         local_constant* lconst = HeapAlloc(GetProcessHeap(), 0, sizeof(local_constant));
 618         if (!lconst) return E_OUTOFMEMORY;
 619
 620         lconst->idx = i;
 621         CopyMemory(lconst->value, src_data + i * 4, 4 * sizeof(float));
 622         list_add_head(&This->baseShader.constantsF, &lconst->entry);
 623     }
 624
 625     return WINED3D_OK;
 626 }
 627
 628 static HRESULT WINAPI IWineD3DVertexShaderImpl_CompileShader(IWineD3DVertexShader *iface) {
 629     IWineD3DVertexShaderImpl *This = (IWineD3DVertexShaderImpl *)iface;
 630     CONST DWORD *function = This->baseShader.function;
 631
 632     TRACE("(%p) : function %p\n", iface, function);
 633
 634     /* We're already compiled. */
 635     if (This->baseShader.is_compiled) return WINED3D_OK;
 636
 637     /* We don't need to compile */
 638     if (!function) {
 639         This->baseShader.is_compiled = TRUE;
 640         return WINED3D_OK;
 641     }
 642
 643     /* Generate the HW shader */
 644     TRACE("(%p) : Generating hardware program\n", This);
 645     IWineD3DVertexShaderImpl_GenerateShader(iface, &This->baseShader.reg_maps, function);
 646
 647     This->baseShader.is_compiled = TRUE;
 648
 649     return WINED3D_OK;
 650 }
 651
 652 const IWineD3DVertexShaderVtbl IWineD3DVertexShader_Vtbl =
 653 {
 654     /*** IUnknown methods ***/
 655     IWineD3DVertexShaderImpl_QueryInterface,
 656     IWineD3DVertexShaderImpl_AddRef,
 657     IWineD3DVertexShaderImpl_Release,
 658     /*** IWineD3DBase methods ***/
 659     IWineD3DVertexShaderImpl_GetParent,
 660     /*** IWineD3DBaseShader methods ***/
 661     IWineD3DVertexShaderImpl_SetFunction,
 662     IWineD3DVertexShaderImpl_CompileShader,
 663     /*** IWineD3DVertexShader methods ***/
 664     IWineD3DVertexShaderImpl_GetDevice,
 665     IWineD3DVertexShaderImpl_GetFunction,
 666     IWineD3DVertexShaderImpl_FakeSemantics,
 667     IWIneD3DVertexShaderImpl_SetLocalConstantsF
 668 };