t_vb_program.c revision fff3b2f318a1d05228d0128f59fe556652c70dda
1/* 2 * Mesa 3-D graphics library 3 * Version: 6.1 4 * 5 * Copyright (C) 1999-2004 Brian Paul All Rights Reserved. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the "Software"), 9 * to deal in the Software without restriction, including without limitation 10 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 11 * and/or sell copies of the Software, and to permit persons to whom the 12 * Software is furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included 15 * in all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 23 */ 24 25 26/** 27 * \file tnl/t_vb_program.c 28 * \brief Pipeline stage for executing NVIDIA vertex programs. 29 * \author Brian Paul, Keith Whitwell 30 */ 31 32 33#include "glheader.h" 34#include "api_noop.h" 35#include "colormac.h" 36#include "context.h" 37#include "dlist.h" 38#include "hash.h" 39#include "light.h" 40#include "macros.h" 41#include "imports.h" 42#include "simple_list.h" 43#include "mtypes.h" 44#include "nvvertprog.h" 45#include "nvvertexec.h" 46#include "nvprogram.h" 47 48#include "math/m_translate.h" 49 50#include "t_context.h" 51#include "t_pipeline.h" 52 53 54/** 55 * \warning These values _MUST_ match the values in the OutputRegisters[] 56 * array in vpparse.c!!! 57 */ 58#define VERT_RESULT_HPOS 0 59#define VERT_RESULT_COL0 1 60#define VERT_RESULT_COL1 2 61#define VERT_RESULT_BFC0 3 62#define VERT_RESULT_BFC1 4 63#define VERT_RESULT_FOGC 5 64#define VERT_RESULT_PSIZ 6 65#define VERT_RESULT_TEX0 7 66#define VERT_RESULT_TEX1 8 67#define VERT_RESULT_TEX2 9 68#define VERT_RESULT_TEX3 10 69#define VERT_RESULT_TEX4 11 70#define VERT_RESULT_TEX5 12 71#define VERT_RESULT_TEX6 13 72#define VERT_RESULT_TEX7 14 73 74 75/*! 76 * Private storage for the vertex program pipeline stage. 77 */ 78struct vp_stage_data { 79 /** The results of running the vertex program go into these arrays. */ 80 GLvector4f attribs[15]; 81 82 GLvector4f ndcCoords; /**< normalized device coords */ 83 GLubyte *clipmask; /**< clip flags */ 84 GLubyte ormask, andmask; /**< for clipping */ 85}; 86 87 88#define VP_STAGE_DATA(stage) ((struct vp_stage_data *)(stage->privatePtr)) 89 90 91/** 92 * This function executes vertex programs 93 */ 94static GLboolean 95run_vp( GLcontext *ctx, struct tnl_pipeline_stage *stage ) 96{ 97 TNLcontext *tnl = TNL_CONTEXT(ctx); 98 struct vp_stage_data *store = VP_STAGE_DATA(stage); 99 struct vertex_buffer *VB = &tnl->vb; 100 struct vertex_program *program = ctx->VertexProgram.Current; 101 GLuint i; 102 103 /* load program parameter registers (they're read-only) */ 104 _mesa_init_vp_per_primitive_registers(ctx); 105 106 for (i = 0; i < VB->Count; i++) { 107 GLuint attr; 108 109 _mesa_init_vp_per_vertex_registers(ctx); 110 111#if 0 112 printf("Input %d: %f, %f, %f, %f\n", i, 113 VB->AttribPtr[0]->data[i][0], 114 VB->AttribPtr[0]->data[i][1], 115 VB->AttribPtr[0]->data[i][2], 116 VB->AttribPtr[0]->data[i][3]); 117 printf(" color: %f, %f, %f, %f\n", 118 VB->AttribPtr[3]->data[i][0], 119 VB->AttribPtr[3]->data[i][1], 120 VB->AttribPtr[3]->data[i][2], 121 VB->AttribPtr[3]->data[i][3]); 122 printf(" normal: %f, %f, %f, %f\n", 123 VB->AttribPtr[2]->data[i][0], 124 VB->AttribPtr[2]->data[i][1], 125 VB->AttribPtr[2]->data[i][2], 126 VB->AttribPtr[2]->data[i][3]); 127#endif 128 129 /* the vertex array case */ 130 for (attr = 0; attr < VERT_ATTRIB_MAX; attr++) { 131 if (program->InputsRead & (1 << attr)) { 132 const GLubyte *ptr = (const GLubyte*) VB->AttribPtr[attr]->data; 133 const GLuint size = VB->AttribPtr[attr]->size; 134 const GLuint stride = VB->AttribPtr[attr]->stride; 135 const GLfloat *data = (GLfloat *) (ptr + stride * i); 136 COPY_CLEAN_4V(ctx->VertexProgram.Inputs[attr], size, data); 137 } 138 } 139 140 /* execute the program */ 141 ASSERT(program); 142 _mesa_exec_vertex_program(ctx, program); 143 144 /* Fixup fog an point size results if needed */ 145 if (ctx->Fog.Enabled && 146 (program->OutputsWritten & (1 << VERT_RESULT_FOGC)) == 0) { 147 ctx->VertexProgram.Outputs[VERT_RESULT_FOGC][0] = 1.0; 148 } 149 150 if (ctx->VertexProgram.PointSizeEnabled && 151 (program->OutputsWritten & (1 << VERT_RESULT_PSIZ)) == 0) { 152 ctx->VertexProgram.Outputs[VERT_RESULT_PSIZ][0] = ctx->Point.Size; 153 } 154 155 /* copy the output registers into the VB->attribs arrays */ 156 /* XXX (optimize) could use a conditional and smaller loop limit here */ 157 for (attr = 0; attr < 15; attr++) { 158 COPY_4V(store->attribs[attr].data[i], 159 ctx->VertexProgram.Outputs[attr]); 160 } 161 } 162 163 /* Setup the VB pointers so that the next pipeline stages get 164 * their data from the right place (the program output arrays). 165 */ 166 VB->ClipPtr = &store->attribs[VERT_RESULT_HPOS]; 167 VB->ClipPtr->size = 4; 168 VB->ClipPtr->count = VB->Count; 169 VB->ColorPtr[0] = &store->attribs[VERT_RESULT_COL0]; 170 VB->ColorPtr[1] = &store->attribs[VERT_RESULT_BFC0]; 171 VB->SecondaryColorPtr[0] = &store->attribs[VERT_RESULT_COL1]; 172 VB->SecondaryColorPtr[1] = &store->attribs[VERT_RESULT_BFC1]; 173 VB->FogCoordPtr = &store->attribs[VERT_RESULT_FOGC]; 174 VB->PointSizePtr = &store->attribs[VERT_RESULT_PSIZ]; 175 176 VB->AttribPtr[VERT_ATTRIB_COLOR0] = VB->ColorPtr[0]; 177 VB->AttribPtr[VERT_ATTRIB_COLOR1] = VB->SecondaryColorPtr[0]; 178 VB->AttribPtr[VERT_ATTRIB_FOG] = VB->FogCoordPtr; 179 VB->AttribPtr[_TNL_ATTRIB_POINTSIZE] = &store->attribs[VERT_RESULT_PSIZ]; 180 181 for (i = 0; i < ctx->Const.MaxTextureUnits; i++) { 182 VB->AttribPtr[VERT_ATTRIB_TEX0+i] = VB->TexCoordPtr[i] = 183 &store->attribs[VERT_RESULT_TEX0 + i]; 184 } 185 186 187 188 /* Cliptest and perspective divide. Clip functions must clear 189 * the clipmask. 190 */ 191 store->ormask = 0; 192 store->andmask = CLIP_ALL_BITS; 193 194 if (tnl->NeedNdcCoords) { 195 VB->NdcPtr = 196 _mesa_clip_tab[VB->ClipPtr->size]( VB->ClipPtr, 197 &store->ndcCoords, 198 store->clipmask, 199 &store->ormask, 200 &store->andmask ); 201 } 202 else { 203 VB->NdcPtr = NULL; 204 _mesa_clip_np_tab[VB->ClipPtr->size]( VB->ClipPtr, 205 NULL, 206 store->clipmask, 207 &store->ormask, 208 &store->andmask ); 209 } 210 211 if (store->andmask) /* All vertices are outside the frustum */ 212 return GL_FALSE; 213 214 215 /* This is where we'd do clip testing against the user-defined 216 * clipping planes, but they're not supported by vertex programs. 217 */ 218 219 VB->ClipOrMask = store->ormask; 220 VB->ClipMask = store->clipmask; 221 222 return GL_TRUE; 223} 224 225 226/** 227 * This function validates stuff. 228 */ 229static GLboolean run_validate_program( GLcontext *ctx, 230 struct tnl_pipeline_stage *stage ) 231{ 232#if 000 233 /* XXX do we need any validation for vertex programs? */ 234 GLuint ind = 0; 235 light_func *tab; 236 237 if (ctx->Visual.rgbMode) { 238 if (ctx->Light._NeedVertices) { 239 if (ctx->Light.Model.ColorControl == GL_SEPARATE_SPECULAR_COLOR) 240 tab = _tnl_light_spec_tab; 241 else 242 tab = _tnl_light_tab; 243 } 244 else { 245 if (ctx->Light.EnabledList.next == ctx->Light.EnabledList.prev) 246 tab = _tnl_light_fast_single_tab; 247 else 248 tab = _tnl_light_fast_tab; 249 } 250 } 251 else 252 tab = _tnl_light_ci_tab; 253 254 if (ctx->Light.ColorMaterialEnabled) 255 ind |= LIGHT_COLORMATERIAL; 256 257 if (ctx->Light.Model.TwoSide) 258 ind |= LIGHT_TWOSIDE; 259 260 VP_STAGE_DATA(stage)->light_func_tab = &tab[ind]; 261 262 /* This and the above should only be done on _NEW_LIGHT: 263 */ 264 _mesa_validate_all_lighting_tables( ctx ); 265#endif 266 267 /* Now run the stage... 268 */ 269 stage->run = run_vp; 270 return stage->run( ctx, stage ); 271} 272 273 274 275/** 276 * Called the first time stage->run is called. In effect, don't 277 * allocate data until the first time the stage is run. 278 */ 279static GLboolean run_init_vp( GLcontext *ctx, 280 struct tnl_pipeline_stage *stage ) 281{ 282 TNLcontext *tnl = TNL_CONTEXT(ctx); 283 struct vertex_buffer *VB = &(tnl->vb); 284 struct vp_stage_data *store; 285 const GLuint size = VB->Size; 286 GLuint i; 287 288 stage->privatePtr = MALLOC(sizeof(*store)); 289 store = VP_STAGE_DATA(stage); 290 if (!store) 291 return GL_FALSE; 292 293 /* Allocate arrays of vertex output values */ 294 for (i = 0; i < 15; i++) { 295 _mesa_vector4f_alloc( &store->attribs[i], 0, size, 32 ); 296 store->attribs[i].size = 4; 297 } 298 299 /* a few other misc allocations */ 300 _mesa_vector4f_alloc( &store->ndcCoords, 0, size, 32 ); 301 store->clipmask = (GLubyte *) ALIGN_MALLOC(sizeof(GLubyte)*size, 32 ); 302 303 /* Now validate the stage derived data... 304 */ 305 stage->run = run_validate_program; 306 return stage->run( ctx, stage ); 307} 308 309 310 311/** 312 * Check if vertex program mode is enabled. 313 * If so, configure the pipeline stage's type, inputs, and outputs. 314 */ 315static void check_vp( GLcontext *ctx, struct tnl_pipeline_stage *stage ) 316{ 317 stage->active = ctx->VertexProgram._Enabled; 318 319 if (stage->active) { 320 /* Set stage->inputs equal to the bitmask of vertex attributes 321 * which the program needs for inputs. 322 */ 323 stage->inputs = ctx->VertexProgram.Current->InputsRead; 324 } 325} 326 327 328/** 329 * Destructor for this pipeline stage. 330 */ 331static void dtr( struct tnl_pipeline_stage *stage ) 332{ 333 struct vp_stage_data *store = VP_STAGE_DATA(stage); 334 335 if (store) { 336 GLuint i; 337 338 /* free the vertex program result arrays */ 339 for (i = 0; i < 15; i++) 340 _mesa_vector4f_free( &store->attribs[i] ); 341 342 /* free misc arrays */ 343 _mesa_vector4f_free( &store->ndcCoords ); 344 ALIGN_FREE( store->clipmask ); 345 346 FREE( store ); 347 stage->privatePtr = NULL; 348 } 349} 350 351/** 352 * Public description of this pipeline stage. 353 */ 354const struct tnl_pipeline_stage _tnl_vertex_program_stage = 355{ 356 "vertex-program", 357 _NEW_ALL, /*XXX FIX */ /* recheck */ 358 _NEW_ALL, /*XXX FIX */ /* recalc */ 359 GL_FALSE, /* active */ 360 0, /* inputs - calculated on the fly */ 361 _TNL_BITS_PROG_ANY, /* outputs -- could calculate */ 362 0, /* changed_inputs */ 363 NULL, /* private_data */ 364 dtr, /* destroy */ 365 check_vp, /* check */ 366 run_init_vp /* run -- initially set to ctr */ 367}; 368