src/mesa/drivers/dri/nouveau/nv20_state_tnl.c

   1 /*
   2  * Copyright (C) 2009-2010 Francisco Jerez.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial
  15  * portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  */
  26
  27 #include "nouveau_driver.h"
  28 #include "nouveau_context.h"
  29 #include "nouveau_gldefs.h"
  30 #include "nouveau_util.h"
  31 #include "nv20_3d.xml.h"
  32 #include "nv10_driver.h"
  33 #include "nv20_driver.h"
  34
  35 #include "util/simple_list.h"
  36
  37 #define LIGHT_MODEL_AMBIENT_R(side)                     \
  38         ((side) ? NV20_3D_LIGHT_MODEL_BACK_AMBIENT_R :  \
  39          NV20_3D_LIGHT_MODEL_FRONT_AMBIENT_R)
  40 #define LIGHT_AMBIENT_R(side, i)                        \
  41         ((side) ? NV20_3D_LIGHT_BACK_AMBIENT_R(i) :     \
  42          NV20_3D_LIGHT_FRONT_AMBIENT_R(i))
  43 #define LIGHT_DIFFUSE_R(side, i)                        \
  44         ((side) ? NV20_3D_LIGHT_BACK_DIFFUSE_R(i) :     \
  45          NV20_3D_LIGHT_FRONT_DIFFUSE_R(i))
  46 #define LIGHT_SPECULAR_R(side, i)                       \
  47         ((side) ? NV20_3D_LIGHT_BACK_SPECULAR_R(i) :    \
  48          NV20_3D_LIGHT_FRONT_SPECULAR_R(i))
  49 #define MATERIAL_FACTOR_R(side)                         \
  50         ((side) ? NV20_3D_MATERIAL_FACTOR_BACK_R :      \
  51          NV20_3D_MATERIAL_FACTOR_FRONT_R)
  52 #define MATERIAL_FACTOR_A(side)                         \
  53         ((side) ? NV20_3D_MATERIAL_FACTOR_BACK_A :      \
  54          NV20_3D_MATERIAL_FACTOR_FRONT_A)
  55 #define MATERIAL_SHININESS(side)                        \
  56         ((side) ? NV20_3D_BACK_MATERIAL_SHININESS(0) :  \
  57          NV20_3D_FRONT_MATERIAL_SHININESS(0))
  58
  59 void
  60 nv20_emit_clip_plane(struct gl_context *ctx, int emit)
  61 {
  62 }
  63
  64 static inline unsigned
  65 get_material_bitmask(unsigned m)
  66 {
  67         unsigned ret = 0;
  68
  69         if (m & MAT_BIT_FRONT_EMISSION)
  70                 ret |= NV20_3D_COLOR_MATERIAL_FRONT_EMISSION_COL1;
  71         if (m & MAT_BIT_FRONT_AMBIENT)
  72                 ret |= NV20_3D_COLOR_MATERIAL_FRONT_AMBIENT_COL1;
  73         if (m & MAT_BIT_FRONT_DIFFUSE)
  74                 ret |= NV20_3D_COLOR_MATERIAL_FRONT_DIFFUSE_COL1;
  75         if (m & MAT_BIT_FRONT_SPECULAR)
  76                 ret |= NV20_3D_COLOR_MATERIAL_FRONT_SPECULAR_COL1;
  77
  78         if (m & MAT_BIT_BACK_EMISSION)
  79                 ret |= NV20_3D_COLOR_MATERIAL_BACK_EMISSION_COL1;
  80         if (m & MAT_BIT_BACK_AMBIENT)
  81                 ret |= NV20_3D_COLOR_MATERIAL_BACK_AMBIENT_COL1;
  82         if (m & MAT_BIT_BACK_DIFFUSE)
  83                 ret |= NV20_3D_COLOR_MATERIAL_BACK_DIFFUSE_COL1;
  84         if (m & MAT_BIT_BACK_SPECULAR)
  85                 ret |= NV20_3D_COLOR_MATERIAL_BACK_SPECULAR_COL1;
  86
  87         return ret;
  88 }
  89
  90 void
  91 nv20_emit_color_material(struct gl_context *ctx, int emit)
  92 {
  93         struct nouveau_pushbuf *push = context_push(ctx);
  94         unsigned mask = get_material_bitmask(ctx->Light._ColorMaterialBitmask);
  95
  96         BEGIN_NV04(push, NV20_3D(COLOR_MATERIAL), 1);
  97         PUSH_DATA (push, ctx->Light.ColorMaterialEnabled ? mask : 0);
  98 }
  99
 100 static unsigned
 101 get_fog_mode_signed(unsigned mode)
 102 {
 103         switch (mode) {
 104         case GL_LINEAR:
 105                 return NV20_3D_FOG_MODE_LINEAR_SIGNED;
 106         case GL_EXP:
 107                 return NV20_3D_FOG_MODE_EXP_SIGNED;
 108         case GL_EXP2:
 109                 return NV20_3D_FOG_MODE_EXP2_SIGNED;
 110         default:
 111                 assert(0);
 112         }
 113 }
 114
 115 static unsigned
 116 get_fog_mode_unsigned(unsigned mode)
 117 {
 118         switch (mode) {
 119         case GL_LINEAR:
 120                 return NV20_3D_FOG_MODE_LINEAR_UNSIGNED;
 121         case GL_EXP:
 122                 return NV20_3D_FOG_MODE_EXP_UNSIGNED;
 123         case GL_EXP2:
 124                 return NV20_3D_FOG_MODE_EXP2_UNSIGNED;
 125         default:
 126                 assert(0);
 127         }
 128 }
 129
 130 static unsigned
 131 get_fog_source(unsigned source, unsigned distance_mode)
 132 {
 133         switch (source) {
 134         case GL_FOG_COORDINATE_EXT:
 135                 return NV20_3D_FOG_COORD_FOG;
 136         case GL_FRAGMENT_DEPTH_EXT:
 137                 switch (distance_mode) {
 138                 case GL_EYE_PLANE_ABSOLUTE_NV:
 139                         return NV20_3D_FOG_COORD_DIST_ORTHOGONAL_ABS;
 140                 case GL_EYE_PLANE:
 141                         return NV20_3D_FOG_COORD_DIST_ORTHOGONAL;
 142                 case GL_EYE_RADIAL_NV:
 143                         return NV20_3D_FOG_COORD_DIST_RADIAL;
 144                 default:
 145                         assert(0);
 146                 }
 147         default:
 148                 assert(0);
 149         }
 150 }
 151
 152 void
 153 nv20_emit_fog(struct gl_context *ctx, int emit)
 154 {
 155         struct nouveau_context *nctx = to_nouveau_context(ctx);
 156         struct nouveau_pushbuf *push = context_push(ctx);
 157         struct gl_fog_attrib *f = &ctx->Fog;
 158         unsigned source = nctx->fallback == HWTNL ?
 159                 f->FogCoordinateSource : GL_FOG_COORDINATE_EXT;
 160         float k[3];
 161
 162         nv10_get_fog_coeff(ctx, k);
 163
 164         BEGIN_NV04(push, NV20_3D(FOG_MODE), 4);
 165         PUSH_DATA (push, ((source == GL_FRAGMENT_DEPTH_EXT &&
 166                          f->FogDistanceMode == GL_EYE_PLANE_ABSOLUTE_NV) ?
 167                         get_fog_mode_unsigned(f->Mode) :
 168                         get_fog_mode_signed(f->Mode)));
 169         PUSH_DATA (push, get_fog_source(source, f->FogDistanceMode));
 170         PUSH_DATAb(push, f->Enabled);
 171         PUSH_DATA (push, pack_rgba_f(MESA_FORMAT_R8G8B8A8_UNORM, f->Color));
 172
 173         BEGIN_NV04(push, NV20_3D(FOG_COEFF(0)), 3);
 174         PUSH_DATAp(push, k, 3);
 175 }
 176
 177 void
 178 nv20_emit_light_model(struct gl_context *ctx, int emit)
 179 {
 180         struct nouveau_pushbuf *push = context_push(ctx);
 181         struct gl_lightmodel *m = &ctx->Light.Model;
 182
 183         BEGIN_NV04(push, NV20_3D(SEPARATE_SPECULAR_ENABLE), 1);
 184         PUSH_DATAb(push, m->ColorControl == GL_SEPARATE_SPECULAR_COLOR);
 185
 186         BEGIN_NV04(push, NV20_3D(LIGHT_MODEL), 1);
 187         PUSH_DATA (push, ((m->LocalViewer ?
 188                          NV20_3D_LIGHT_MODEL_VIEWER_LOCAL :
 189                          NV20_3D_LIGHT_MODEL_VIEWER_NONLOCAL) |
 190                         (_mesa_need_secondary_color(ctx) ?
 191                          NV20_3D_LIGHT_MODEL_SEPARATE_SPECULAR :
 192                          0)));
 193
 194         BEGIN_NV04(push, NV20_3D(LIGHT_MODEL_TWO_SIDE_ENABLE), 1);
 195         PUSH_DATAb(push, ctx->Light.Model.TwoSide);
 196 }
 197
 198 void
 199 nv20_emit_light_source(struct gl_context *ctx, int emit)
 200 {
 201         const int i = emit - NOUVEAU_STATE_LIGHT_SOURCE0;
 202         struct nouveau_pushbuf *push = context_push(ctx);
 203         struct gl_light *l = &ctx->Light.Light[i];
 204
 205         if (l->_Flags & LIGHT_POSITIONAL) {
 206                 BEGIN_NV04(push, NV20_3D(LIGHT_POSITION_X(i)), 3);
 207                 PUSH_DATAp(push, l->_Position, 3);
 208
 209                 BEGIN_NV04(push, NV20_3D(LIGHT_ATTENUATION_CONSTANT(i)), 3);
 210                 PUSH_DATAf(push, l->ConstantAttenuation);
 211                 PUSH_DATAf(push, l->LinearAttenuation);
 212                 PUSH_DATAf(push, l->QuadraticAttenuation);
 213
 214         } else {
 215                 BEGIN_NV04(push, NV20_3D(LIGHT_DIRECTION_X(i)), 3);
 216                 PUSH_DATAp(push, l->_VP_inf_norm, 3);
 217
 218                 BEGIN_NV04(push, NV20_3D(LIGHT_HALF_VECTOR_X(i)), 3);
 219                 PUSH_DATAp(push, l->_h_inf_norm, 3);
 220         }
 221
 222         if (l->_Flags & LIGHT_SPOT) {
 223                 float k[7];
 224
 225                 nv10_get_spot_coeff(l, k);
 226
 227                 BEGIN_NV04(push, NV20_3D(LIGHT_SPOT_CUTOFF(i, 0)), 7);
 228                 PUSH_DATAp(push, k, 7);
 229         }
 230 }
 231
 232 #define USE_COLOR_MATERIAL(attr, side)                                  \
 233         (ctx->Light.ColorMaterialEnabled &&                             \
 234          ctx->Light._ColorMaterialBitmask & (1 << MAT_ATTRIB_##attr(side)))
 235
 236 void
 237 nv20_emit_material_ambient(struct gl_context *ctx, int emit)
 238 {
 239         const int side = emit - NOUVEAU_STATE_MATERIAL_FRONT_AMBIENT;
 240         struct nouveau_pushbuf *push = context_push(ctx);
 241         float (*mat)[4] = ctx->Light.Material.Attrib;
 242         float c_scene[3], c_factor[3];
 243         struct gl_light *l;
 244
 245         if (USE_COLOR_MATERIAL(AMBIENT, side)) {
 246                 COPY_3V(c_scene, mat[MAT_ATTRIB_EMISSION(side)]);
 247                 COPY_3V(c_factor, ctx->Light.Model.Ambient);
 248
 249         } else if (USE_COLOR_MATERIAL(EMISSION, side)) {
 250                 SCALE_3V(c_scene, mat[MAT_ATTRIB_AMBIENT(side)],
 251                          ctx->Light.Model.Ambient);
 252                 ASSIGN_3V(c_factor, 1, 1, 1);
 253
 254         } else {
 255                 COPY_3V(c_scene, ctx->Light._BaseColor[side]);
 256                 ZERO_3V(c_factor);
 257         }
 258
 259         BEGIN_NV04(push, SUBC_3D(LIGHT_MODEL_AMBIENT_R(side)), 3);
 260         PUSH_DATAp(push, c_scene, 3);
 261
 262         if (ctx->Light.ColorMaterialEnabled) {
 263                 BEGIN_NV04(push, SUBC_3D(MATERIAL_FACTOR_R(side)), 3);
 264                 PUSH_DATAp(push, c_factor, 3);
 265         }
 266
 267         foreach(l, &ctx->Light.EnabledList) {
 268                 const int i = l - ctx->Light.Light;
 269                 float *c_light = (USE_COLOR_MATERIAL(AMBIENT, side) ?
 270                                   l->Ambient :
 271                                   l->_MatAmbient[side]);
 272
 273                 BEGIN_NV04(push, SUBC_3D(LIGHT_AMBIENT_R(side, i)), 3);
 274                 PUSH_DATAp(push, c_light, 3);
 275         }
 276 }
 277
 278 void
 279 nv20_emit_material_diffuse(struct gl_context *ctx, int emit)
 280 {
 281         const int side = emit - NOUVEAU_STATE_MATERIAL_FRONT_DIFFUSE;
 282         struct nouveau_pushbuf *push = context_push(ctx);
 283         GLfloat (*mat)[4] = ctx->Light.Material.Attrib;
 284         struct gl_light *l;
 285
 286         BEGIN_NV04(push, SUBC_3D(MATERIAL_FACTOR_A(side)), 1);
 287         PUSH_DATAf(push, mat[MAT_ATTRIB_DIFFUSE(side)][3]);
 288
 289         foreach(l, &ctx->Light.EnabledList) {
 290                 const int i = l - ctx->Light.Light;
 291                 float *c_light = (USE_COLOR_MATERIAL(DIFFUSE, side) ?
 292                                   l->Diffuse :
 293                                   l->_MatDiffuse[side]);
 294
 295                 BEGIN_NV04(push, SUBC_3D(LIGHT_DIFFUSE_R(side, i)), 3);
 296                 PUSH_DATAp(push, c_light, 3);
 297         }
 298 }
 299
 300 void
 301 nv20_emit_material_specular(struct gl_context *ctx, int emit)
 302 {
 303         const int side = emit - NOUVEAU_STATE_MATERIAL_FRONT_SPECULAR;
 304         struct nouveau_pushbuf *push = context_push(ctx);
 305         struct gl_light *l;
 306
 307         foreach(l, &ctx->Light.EnabledList) {
 308                 const int i = l - ctx->Light.Light;
 309                 float *c_light = (USE_COLOR_MATERIAL(SPECULAR, side) ?
 310                                   l->Specular :
 311                                   l->_MatSpecular[side]);
 312
 313                 BEGIN_NV04(push, SUBC_3D(LIGHT_SPECULAR_R(side, i)), 3);
 314                 PUSH_DATAp(push, c_light, 3);
 315         }
 316 }
 317
 318 void
 319 nv20_emit_material_shininess(struct gl_context *ctx, int emit)
 320 {
 321         const int side = emit - NOUVEAU_STATE_MATERIAL_FRONT_SHININESS;
 322         struct nouveau_pushbuf *push = context_push(ctx);
 323         float (*mat)[4] = ctx->Light.Material.Attrib;
 324         float k[6];
 325
 326         nv10_get_shininess_coeff(
 327                 CLAMP(mat[MAT_ATTRIB_SHININESS(side)][0], 0, 1024),
 328                 k);
 329
 330         BEGIN_NV04(push, SUBC_3D(MATERIAL_SHININESS(side)), 6);
 331         PUSH_DATAp(push, k, 6);
 332 }
 333
 334 void
 335 nv20_emit_modelview(struct gl_context *ctx, int emit)
 336 {
 337         struct nouveau_context *nctx = to_nouveau_context(ctx);
 338         struct nouveau_pushbuf *push = context_push(ctx);
 339         GLmatrix *m = ctx->ModelviewMatrixStack.Top;
 340
 341         if (nctx->fallback != HWTNL)
 342                 return;
 343
 344         if (ctx->Light._NeedEyeCoords || ctx->Fog.Enabled ||
 345             (ctx->Texture._GenFlags & TEXGEN_NEED_EYE_COORD)) {
 346                 BEGIN_NV04(push, NV20_3D(MODELVIEW_MATRIX(0, 0)), 16);
 347                 PUSH_DATAm(push, m->m);
 348         }
 349
 350         if (ctx->Light.Enabled ||
 351             (ctx->Texture._GenFlags & TEXGEN_NEED_EYE_COORD)) {
 352                 int i, j;
 353
 354                 BEGIN_NV04(push, NV20_3D(INVERSE_MODELVIEW_MATRIX(0, 0)), 12);
 355                 for (i = 0; i < 3; i++)
 356                         for (j = 0; j < 4; j++)
 357                                 PUSH_DATAf(push, m->inv[4*i + j]);
 358         }
 359 }
 360
 361 void
 362 nv20_emit_projection(struct gl_context *ctx, int emit)
 363 {
 364         struct nouveau_context *nctx = to_nouveau_context(ctx);
 365         struct nouveau_pushbuf *push = context_push(ctx);
 366         GLmatrix m;
 367
 368         _math_matrix_ctr(&m);
 369         get_viewport_scale(ctx, m.m);
 370
 371         if (nctx->fallback == HWTNL)
 372                 _math_matrix_mul_matrix(&m, &m, &ctx->_ModelProjectMatrix);
 373
 374         BEGIN_NV04(push, NV20_3D(PROJECTION_MATRIX(0)), 16);
 375         PUSH_DATAm(push, m.m);
 376
 377         _math_matrix_dtr(&m);
 378 }