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 #define LIGHT_MODEL_AMBIENT_R(side)                     \
  36         ((side) ? NV20_3D_LIGHT_MODEL_BACK_AMBIENT_R :  \
  37          NV20_3D_LIGHT_MODEL_FRONT_AMBIENT_R)
  38 #define LIGHT_AMBIENT_R(side, i)                        \
  39         ((side) ? NV20_3D_LIGHT_BACK_AMBIENT_R(i) :     \
  40          NV20_3D_LIGHT_FRONT_AMBIENT_R(i))
  41 #define LIGHT_DIFFUSE_R(side, i)                        \
  42         ((side) ? NV20_3D_LIGHT_BACK_DIFFUSE_R(i) :     \
  43          NV20_3D_LIGHT_FRONT_DIFFUSE_R(i))
  44 #define LIGHT_SPECULAR_R(side, i)                       \
  45         ((side) ? NV20_3D_LIGHT_BACK_SPECULAR_R(i) :    \
  46          NV20_3D_LIGHT_FRONT_SPECULAR_R(i))
  47 #define MATERIAL_FACTOR_R(side)                         \
  48         ((side) ? NV20_3D_MATERIAL_FACTOR_BACK_R :      \
  49          NV20_3D_MATERIAL_FACTOR_FRONT_R)
  50 #define MATERIAL_FACTOR_A(side)                         \
  51         ((side) ? NV20_3D_MATERIAL_FACTOR_BACK_A :      \
  52          NV20_3D_MATERIAL_FACTOR_FRONT_A)
  53 #define MATERIAL_SHININESS(side)                        \
  54         ((side) ? NV20_3D_BACK_MATERIAL_SHININESS(0) :  \
  55          NV20_3D_FRONT_MATERIAL_SHININESS(0))
  56
  57 void
  58 nv20_emit_clip_plane(struct gl_context *ctx, int emit)
  59 {
  60 }
  61
  62 static inline unsigned
  63 get_material_bitmask(unsigned m)
  64 {
  65         unsigned ret = 0;
  66
  67         if (m & MAT_BIT_FRONT_EMISSION)
  68                 ret |= NV20_3D_COLOR_MATERIAL_FRONT_EMISSION_COL1;
  69         if (m & MAT_BIT_FRONT_AMBIENT)
  70                 ret |= NV20_3D_COLOR_MATERIAL_FRONT_AMBIENT_COL1;
  71         if (m & MAT_BIT_FRONT_DIFFUSE)
  72                 ret |= NV20_3D_COLOR_MATERIAL_FRONT_DIFFUSE_COL1;
  73         if (m & MAT_BIT_FRONT_SPECULAR)
  74                 ret |= NV20_3D_COLOR_MATERIAL_FRONT_SPECULAR_COL1;
  75
  76         if (m & MAT_BIT_BACK_EMISSION)
  77                 ret |= NV20_3D_COLOR_MATERIAL_BACK_EMISSION_COL1;
  78         if (m & MAT_BIT_BACK_AMBIENT)
  79                 ret |= NV20_3D_COLOR_MATERIAL_BACK_AMBIENT_COL1;
  80         if (m & MAT_BIT_BACK_DIFFUSE)
  81                 ret |= NV20_3D_COLOR_MATERIAL_BACK_DIFFUSE_COL1;
  82         if (m & MAT_BIT_BACK_SPECULAR)
  83                 ret |= NV20_3D_COLOR_MATERIAL_BACK_SPECULAR_COL1;
  84
  85         return ret;
  86 }
  87
  88 void
  89 nv20_emit_color_material(struct gl_context *ctx, int emit)
  90 {
  91         struct nouveau_pushbuf *push = context_push(ctx);
  92         unsigned mask = get_material_bitmask(ctx->Light._ColorMaterialBitmask);
  93
  94         BEGIN_NV04(push, NV20_3D(COLOR_MATERIAL), 1);
  95         PUSH_DATA (push, ctx->Light.ColorMaterialEnabled ? mask : 0);
  96 }
  97
  98 static unsigned
  99 get_fog_mode_signed(unsigned mode)
 100 {
 101         switch (mode) {
 102         case GL_LINEAR:
 103                 return NV20_3D_FOG_MODE_LINEAR_SIGNED;
 104         case GL_EXP:
 105                 return NV20_3D_FOG_MODE_EXP_SIGNED;
 106         case GL_EXP2:
 107                 return NV20_3D_FOG_MODE_EXP2_SIGNED;
 108         default:
 109                 assert(0);
 110         }
 111 }
 112
 113 static unsigned
 114 get_fog_mode_unsigned(unsigned mode)
 115 {
 116         switch (mode) {
 117         case GL_LINEAR:
 118                 return NV20_3D_FOG_MODE_LINEAR_UNSIGNED;
 119         case GL_EXP:
 120                 return NV20_3D_FOG_MODE_EXP_UNSIGNED;
 121         case GL_EXP2:
 122                 return NV20_3D_FOG_MODE_EXP2_UNSIGNED;
 123         default:
 124                 assert(0);
 125         }
 126 }
 127
 128 static unsigned
 129 get_fog_source(unsigned source, unsigned distance_mode)
 130 {
 131         switch (source) {
 132         case GL_FOG_COORDINATE_EXT:
 133                 return NV20_3D_FOG_COORD_FOG;
 134         case GL_FRAGMENT_DEPTH_EXT:
 135                 switch (distance_mode) {
 136                 case GL_EYE_PLANE_ABSOLUTE_NV:
 137                         return NV20_3D_FOG_COORD_DIST_ORTHOGONAL_ABS;
 138                 case GL_EYE_PLANE:
 139                         return NV20_3D_FOG_COORD_DIST_ORTHOGONAL;
 140                 case GL_EYE_RADIAL_NV:
 141                         return NV20_3D_FOG_COORD_DIST_RADIAL;
 142                 default:
 143                         assert(0);
 144                 }
 145         default:
 146                 assert(0);
 147         }
 148 }
 149
 150 void
 151 nv20_emit_fog(struct gl_context *ctx, int emit)
 152 {
 153         struct nouveau_context *nctx = to_nouveau_context(ctx);
 154         struct nouveau_pushbuf *push = context_push(ctx);
 155         struct gl_fog_attrib *f = &ctx->Fog;
 156         unsigned source = nctx->fallback == HWTNL ?
 157                 f->FogCoordinateSource : GL_FOG_COORDINATE_EXT;
 158         float k[3];
 159
 160         nv10_get_fog_coeff(ctx, k);
 161
 162         BEGIN_NV04(push, NV20_3D(FOG_MODE), 4);
 163         PUSH_DATA (push, ((source == GL_FRAGMENT_DEPTH_EXT &&
 164                          f->FogDistanceMode == GL_EYE_PLANE_ABSOLUTE_NV) ?
 165                         get_fog_mode_unsigned(f->Mode) :
 166                         get_fog_mode_signed(f->Mode)));
 167         PUSH_DATA (push, get_fog_source(source, f->FogDistanceMode));
 168         PUSH_DATAb(push, f->Enabled);
 169         PUSH_DATA (push, pack_rgba_f(MESA_FORMAT_R8G8B8A8_UNORM, f->Color));
 170
 171         BEGIN_NV04(push, NV20_3D(FOG_COEFF(0)), 3);
 172         PUSH_DATAp(push, k, 3);
 173 }
 174
 175 void
 176 nv20_emit_light_model(struct gl_context *ctx, int emit)
 177 {
 178         struct nouveau_pushbuf *push = context_push(ctx);
 179         struct gl_lightmodel *m = &ctx->Light.Model;
 180
 181         BEGIN_NV04(push, NV20_3D(SEPARATE_SPECULAR_ENABLE), 1);
 182         PUSH_DATAb(push, m->ColorControl == GL_SEPARATE_SPECULAR_COLOR);
 183
 184         BEGIN_NV04(push, NV20_3D(LIGHT_MODEL), 1);
 185         PUSH_DATA (push, ((m->LocalViewer ?
 186                          NV20_3D_LIGHT_MODEL_VIEWER_LOCAL :
 187                          NV20_3D_LIGHT_MODEL_VIEWER_NONLOCAL) |
 188                         (_mesa_need_secondary_color(ctx) ?
 189                          NV20_3D_LIGHT_MODEL_SEPARATE_SPECULAR :
 190                          0)));
 191
 192         BEGIN_NV04(push, NV20_3D(LIGHT_MODEL_TWO_SIDE_ENABLE), 1);
 193         PUSH_DATAb(push, ctx->Light.Model.TwoSide);
 194 }
 195
 196 void
 197 nv20_emit_light_source(struct gl_context *ctx, int emit)
 198 {
 199         const int i = emit - NOUVEAU_STATE_LIGHT_SOURCE0;
 200         struct nouveau_pushbuf *push = context_push(ctx);
 201         struct gl_light *l = &ctx->Light.Light[i];
 202
 203         if (l->_Flags & LIGHT_POSITIONAL) {
 204                 BEGIN_NV04(push, NV20_3D(LIGHT_POSITION_X(i)), 3);
 205                 PUSH_DATAp(push, l->_Position, 3);
 206
 207                 BEGIN_NV04(push, NV20_3D(LIGHT_ATTENUATION_CONSTANT(i)), 3);
 208                 PUSH_DATAf(push, l->ConstantAttenuation);
 209                 PUSH_DATAf(push, l->LinearAttenuation);
 210                 PUSH_DATAf(push, l->QuadraticAttenuation);
 211
 212         } else {
 213                 BEGIN_NV04(push, NV20_3D(LIGHT_DIRECTION_X(i)), 3);
 214                 PUSH_DATAp(push, l->_VP_inf_norm, 3);
 215
 216                 BEGIN_NV04(push, NV20_3D(LIGHT_HALF_VECTOR_X(i)), 3);
 217                 PUSH_DATAp(push, l->_h_inf_norm, 3);
 218         }
 219
 220         if (l->_Flags & LIGHT_SPOT) {
 221                 float k[7];
 222
 223                 nv10_get_spot_coeff(l, k);
 224
 225                 BEGIN_NV04(push, NV20_3D(LIGHT_SPOT_CUTOFF(i, 0)), 7);
 226                 PUSH_DATAp(push, k, 7);
 227         }
 228 }
 229
 230 #define USE_COLOR_MATERIAL(attr, side)                                  \
 231         (ctx->Light.ColorMaterialEnabled &&                             \
 232          ctx->Light._ColorMaterialBitmask & (1 << MAT_ATTRIB_##attr(side)))
 233
 234 void
 235 nv20_emit_material_ambient(struct gl_context *ctx, int emit)
 236 {
 237         const int side = emit - NOUVEAU_STATE_MATERIAL_FRONT_AMBIENT;
 238         struct nouveau_pushbuf *push = context_push(ctx);
 239         float (*mat)[4] = ctx->Light.Material.Attrib;
 240         float c_scene[3], c_factor[3];
 241         struct gl_light *l;
 242
 243         if (USE_COLOR_MATERIAL(AMBIENT, side)) {
 244                 COPY_3V(c_scene, mat[MAT_ATTRIB_EMISSION(side)]);
 245                 COPY_3V(c_factor, ctx->Light.Model.Ambient);
 246
 247         } else if (USE_COLOR_MATERIAL(EMISSION, side)) {
 248                 SCALE_3V(c_scene, mat[MAT_ATTRIB_AMBIENT(side)],
 249                          ctx->Light.Model.Ambient);
 250                 ASSIGN_3V(c_factor, 1, 1, 1);
 251
 252         } else {
 253                 COPY_3V(c_scene, ctx->Light._BaseColor[side]);
 254                 ZERO_3V(c_factor);
 255         }
 256
 257         BEGIN_NV04(push, SUBC_3D(LIGHT_MODEL_AMBIENT_R(side)), 3);
 258         PUSH_DATAp(push, c_scene, 3);
 259
 260         if (ctx->Light.ColorMaterialEnabled) {
 261                 BEGIN_NV04(push, SUBC_3D(MATERIAL_FACTOR_R(side)), 3);
 262                 PUSH_DATAp(push, c_factor, 3);
 263         }
 264
 265         foreach(l, &ctx->Light.EnabledList) {
 266                 const int i = l - ctx->Light.Light;
 267                 float *c_light = (USE_COLOR_MATERIAL(AMBIENT, side) ?
 268                                   l->Ambient :
 269                                   l->_MatAmbient[side]);
 270
 271                 BEGIN_NV04(push, SUBC_3D(LIGHT_AMBIENT_R(side, i)), 3);
 272                 PUSH_DATAp(push, c_light, 3);
 273         }
 274 }
 275
 276 void
 277 nv20_emit_material_diffuse(struct gl_context *ctx, int emit)
 278 {
 279         const int side = emit - NOUVEAU_STATE_MATERIAL_FRONT_DIFFUSE;
 280         struct nouveau_pushbuf *push = context_push(ctx);
 281         GLfloat (*mat)[4] = ctx->Light.Material.Attrib;
 282         struct gl_light *l;
 283
 284         BEGIN_NV04(push, SUBC_3D(MATERIAL_FACTOR_A(side)), 1);
 285         PUSH_DATAf(push, mat[MAT_ATTRIB_DIFFUSE(side)][3]);
 286
 287         foreach(l, &ctx->Light.EnabledList) {
 288                 const int i = l - ctx->Light.Light;
 289                 float *c_light = (USE_COLOR_MATERIAL(DIFFUSE, side) ?
 290                                   l->Diffuse :
 291                                   l->_MatDiffuse[side]);
 292
 293                 BEGIN_NV04(push, SUBC_3D(LIGHT_DIFFUSE_R(side, i)), 3);
 294                 PUSH_DATAp(push, c_light, 3);
 295         }
 296 }
 297
 298 void
 299 nv20_emit_material_specular(struct gl_context *ctx, int emit)
 300 {
 301         const int side = emit - NOUVEAU_STATE_MATERIAL_FRONT_SPECULAR;
 302         struct nouveau_pushbuf *push = context_push(ctx);
 303         struct gl_light *l;
 304
 305         foreach(l, &ctx->Light.EnabledList) {
 306                 const int i = l - ctx->Light.Light;
 307                 float *c_light = (USE_COLOR_MATERIAL(SPECULAR, side) ?
 308                                   l->Specular :
 309                                   l->_MatSpecular[side]);
 310
 311                 BEGIN_NV04(push, SUBC_3D(LIGHT_SPECULAR_R(side, i)), 3);
 312                 PUSH_DATAp(push, c_light, 3);
 313         }
 314 }
 315
 316 void
 317 nv20_emit_material_shininess(struct gl_context *ctx, int emit)
 318 {
 319         const int side = emit - NOUVEAU_STATE_MATERIAL_FRONT_SHININESS;
 320         struct nouveau_pushbuf *push = context_push(ctx);
 321         float (*mat)[4] = ctx->Light.Material.Attrib;
 322         float k[6];
 323
 324         nv10_get_shininess_coeff(
 325                 CLAMP(mat[MAT_ATTRIB_SHININESS(side)][0], 0, 1024),
 326                 k);
 327
 328         BEGIN_NV04(push, SUBC_3D(MATERIAL_SHININESS(side)), 6);
 329         PUSH_DATAp(push, k, 6);
 330 }
 331
 332 void
 333 nv20_emit_modelview(struct gl_context *ctx, int emit)
 334 {
 335         struct nouveau_context *nctx = to_nouveau_context(ctx);
 336         struct nouveau_pushbuf *push = context_push(ctx);
 337         GLmatrix *m = ctx->ModelviewMatrixStack.Top;
 338
 339         if (nctx->fallback != HWTNL)
 340                 return;
 341
 342         if (ctx->Light._NeedEyeCoords || ctx->Fog.Enabled ||
 343             (ctx->Texture._GenFlags & TEXGEN_NEED_EYE_COORD)) {
 344                 BEGIN_NV04(push, NV20_3D(MODELVIEW_MATRIX(0, 0)), 16);
 345                 PUSH_DATAm(push, m->m);
 346         }
 347
 348         if (ctx->Light.Enabled ||
 349             (ctx->Texture._GenFlags & TEXGEN_NEED_EYE_COORD)) {
 350                 int i, j;
 351
 352                 BEGIN_NV04(push, NV20_3D(INVERSE_MODELVIEW_MATRIX(0, 0)), 12);
 353                 for (i = 0; i < 3; i++)
 354                         for (j = 0; j < 4; j++)
 355                                 PUSH_DATAf(push, m->inv[4*i + j]);
 356         }
 357 }
 358
 359 void
 360 nv20_emit_projection(struct gl_context *ctx, int emit)
 361 {
 362         struct nouveau_context *nctx = to_nouveau_context(ctx);
 363         struct nouveau_pushbuf *push = context_push(ctx);
 364         GLmatrix m;
 365
 366         _math_matrix_ctr(&m);
 367         get_viewport_scale(ctx, m.m);
 368
 369         if (nctx->fallback == HWTNL)
 370                 _math_matrix_mul_matrix(&m, &m, &ctx->_ModelProjectMatrix);
 371
 372         BEGIN_NV04(push, NV20_3D(PROJECTION_MATRIX(0)), 16);
 373         PUSH_DATAm(push, m.m);
 374
 375         _math_matrix_dtr(&m);
 376 }