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 "nouveau_class.h"
  32 #include "nv10_driver.h"
  33 #include "nv20_driver.h"
  34
  35 #define LIGHT_MODEL_AMBIENT_R(side)                     \
  36         ((side) ? NV20TCL_LIGHT_MODEL_BACK_AMBIENT_R :  \
  37          NV20TCL_LIGHT_MODEL_FRONT_AMBIENT_R)
  38 #define LIGHT_AMBIENT_R(side, i)                        \
  39         ((side) ? NV20TCL_LIGHT_BACK_AMBIENT_R(i) :     \
  40          NV20TCL_LIGHT_FRONT_AMBIENT_R(i))
  41 #define LIGHT_DIFFUSE_R(side, i)                        \
  42         ((side) ? NV20TCL_LIGHT_BACK_DIFFUSE_R(i) :     \
  43          NV20TCL_LIGHT_FRONT_DIFFUSE_R(i))
  44 #define LIGHT_SPECULAR_R(side, i)                       \
  45         ((side) ? NV20TCL_LIGHT_BACK_SPECULAR_R(i) :    \
  46          NV20TCL_LIGHT_FRONT_SPECULAR_R(i))
  47 #define MATERIAL_FACTOR_R(side)                         \
  48         ((side) ? NV20TCL_MATERIAL_FACTOR_BACK_R :      \
  49          NV20TCL_MATERIAL_FACTOR_FRONT_R)
  50 #define MATERIAL_FACTOR_A(side)                         \
  51         ((side) ? NV20TCL_MATERIAL_FACTOR_BACK_A :      \
  52          NV20TCL_MATERIAL_FACTOR_FRONT_A)
  53 #define MATERIAL_SHININESS(side)                        \
  54         ((side) ? NV20TCL_BACK_MATERIAL_SHININESS(0) :  \
  55          NV20TCL_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 |= NV20TCL_COLOR_MATERIAL_FRONT_EMISSION_COL1;
  69         if (m & MAT_BIT_FRONT_AMBIENT)
  70                 ret |= NV20TCL_COLOR_MATERIAL_FRONT_AMBIENT_COL1;
  71         if (m & MAT_BIT_FRONT_DIFFUSE)
  72                 ret |= NV20TCL_COLOR_MATERIAL_FRONT_DIFFUSE_COL1;
  73         if (m & MAT_BIT_FRONT_SPECULAR)
  74                 ret |= NV20TCL_COLOR_MATERIAL_FRONT_SPECULAR_COL1;
  75
  76         if (m & MAT_BIT_BACK_EMISSION)
  77                 ret |= NV20TCL_COLOR_MATERIAL_BACK_EMISSION_COL1;
  78         if (m & MAT_BIT_BACK_AMBIENT)
  79                 ret |= NV20TCL_COLOR_MATERIAL_BACK_AMBIENT_COL1;
  80         if (m & MAT_BIT_BACK_DIFFUSE)
  81                 ret |= NV20TCL_COLOR_MATERIAL_BACK_DIFFUSE_COL1;
  82         if (m & MAT_BIT_BACK_SPECULAR)
  83                 ret |= NV20TCL_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_channel *chan = context_chan(ctx);
  92         struct nouveau_grobj *kelvin = context_eng3d(ctx);
  93         unsigned mask = get_material_bitmask(ctx->Light.ColorMaterialBitmask);
  94
  95         BEGIN_RING(chan, kelvin, NV20TCL_COLOR_MATERIAL, 1);
  96         OUT_RING(chan, ctx->Light.ColorMaterialEnabled ? mask : 0);
  97 }
  98
  99 static unsigned
 100 get_fog_mode_signed(unsigned mode)
 101 {
 102         switch (mode) {
 103         case GL_LINEAR:
 104                 return NV20TCL_FOG_MODE_LINEAR_SIGNED;
 105         case GL_EXP:
 106                 return NV20TCL_FOG_MODE_EXP_SIGNED;
 107         case GL_EXP2:
 108                 return NV20TCL_FOG_MODE_EXP2_SIGNED;
 109         default:
 110                 assert(0);
 111         }
 112 }
 113
 114 static unsigned
 115 get_fog_mode_unsigned(unsigned mode)
 116 {
 117         switch (mode) {
 118         case GL_LINEAR:
 119                 return NV20TCL_FOG_MODE_LINEAR_UNSIGNED;
 120         case GL_EXP:
 121                 return NV20TCL_FOG_MODE_EXP_UNSIGNED;
 122         case GL_EXP2:
 123                 return NV20TCL_FOG_MODE_EXP2_UNSIGNED;
 124         default:
 125                 assert(0);
 126         }
 127 }
 128
 129 static unsigned
 130 get_fog_source(unsigned source)
 131 {
 132         switch (source) {
 133         case GL_FOG_COORDINATE_EXT:
 134                 return NV20TCL_FOG_COORD_FOG;
 135         case GL_FRAGMENT_DEPTH_EXT:
 136                 return NV20TCL_FOG_COORD_DIST_ORTHOGONAL_ABS;
 137         default:
 138                 assert(0);
 139         }
 140 }
 141
 142 void
 143 nv20_emit_fog(struct gl_context *ctx, int emit)
 144 {
 145         struct nouveau_context *nctx = to_nouveau_context(ctx);
 146         struct nouveau_channel *chan = context_chan(ctx);
 147         struct nouveau_grobj *kelvin = context_eng3d(ctx);
 148         struct gl_fog_attrib *f = &ctx->Fog;
 149         unsigned source = nctx->fallback == HWTNL ?
 150                 f->FogCoordinateSource : GL_FOG_COORDINATE_EXT;
 151         float k[3];
 152
 153         nv10_get_fog_coeff(ctx, k);
 154
 155         BEGIN_RING(chan, kelvin, NV20TCL_FOG_MODE, 4);
 156         OUT_RING(chan, (source == GL_FOG_COORDINATE_EXT ?
 157                         get_fog_mode_signed(f->Mode) :
 158                         get_fog_mode_unsigned(f->Mode)));
 159         OUT_RING(chan, get_fog_source(source));
 160         OUT_RING(chan, f->Enabled ? 1 : 0);
 161         OUT_RING(chan, pack_rgba_f(MESA_FORMAT_RGBA8888_REV, f->Color));
 162
 163         BEGIN_RING(chan, kelvin, NV20TCL_FOG_EQUATION_CONSTANT, 3);
 164         OUT_RINGp(chan, k, 3);
 165 }
 166
 167 void
 168 nv20_emit_light_model(struct gl_context *ctx, int emit)
 169 {
 170         struct nouveau_channel *chan = context_chan(ctx);
 171         struct nouveau_grobj *kelvin = context_eng3d(ctx);
 172         struct gl_lightmodel *m = &ctx->Light.Model;
 173
 174         BEGIN_RING(chan, kelvin, NV20TCL_SEPARATE_SPECULAR_ENABLE, 1);
 175         OUT_RING(chan, m->ColorControl == GL_SEPARATE_SPECULAR_COLOR ? 1 : 0);
 176
 177         BEGIN_RING(chan, kelvin, NV20TCL_LIGHT_MODEL, 1);
 178         OUT_RING(chan, ((m->LocalViewer ?
 179                          NV20TCL_LIGHT_MODEL_VIEWER_LOCAL :
 180                          NV20TCL_LIGHT_MODEL_VIEWER_NONLOCAL) |
 181                         (NEED_SECONDARY_COLOR(ctx) ?
 182                          NV20TCL_LIGHT_MODEL_SEPARATE_SPECULAR :
 183                          0)));
 184
 185         BEGIN_RING(chan, kelvin, NV20TCL_LIGHT_MODEL_TWO_SIDE_ENABLE, 1);
 186         OUT_RING(chan, ctx->Light.Model.TwoSide ? 1 : 0);
 187 }
 188
 189 void
 190 nv20_emit_light_source(struct gl_context *ctx, int emit)
 191 {
 192         const int i = emit - NOUVEAU_STATE_LIGHT_SOURCE0;
 193         struct nouveau_channel *chan = context_chan(ctx);
 194         struct nouveau_grobj *kelvin = context_eng3d(ctx);
 195         struct gl_light *l = &ctx->Light.Light[i];
 196
 197         if (l->_Flags & LIGHT_POSITIONAL) {
 198                 BEGIN_RING(chan, kelvin, NV20TCL_LIGHT_POSITION_X(i), 3);
 199                 OUT_RINGp(chan, l->_Position, 3);
 200
 201                 BEGIN_RING(chan, kelvin, NV20TCL_LIGHT_ATTENUATION_CONSTANT(i), 3);
 202                 OUT_RINGf(chan, l->ConstantAttenuation);
 203                 OUT_RINGf(chan, l->LinearAttenuation);
 204                 OUT_RINGf(chan, l->QuadraticAttenuation);
 205
 206         } else {
 207                 BEGIN_RING(chan, kelvin, NV20TCL_LIGHT_DIRECTION_X(i), 3);
 208                 OUT_RINGp(chan, l->_VP_inf_norm, 3);
 209
 210                 BEGIN_RING(chan, kelvin, NV20TCL_LIGHT_HALF_VECTOR_X(i), 3);
 211                 OUT_RINGp(chan, l->_h_inf_norm, 3);
 212         }
 213
 214         if (l->_Flags & LIGHT_SPOT) {
 215                 float k[7];
 216
 217                 nv10_get_spot_coeff(l, k);
 218
 219                 BEGIN_RING(chan, kelvin, NV20TCL_LIGHT_SPOT_CUTOFF_A(i), 7);
 220                 OUT_RINGp(chan, k, 7);
 221         }
 222 }
 223
 224 #define USE_COLOR_MATERIAL(attr, side)                                  \
 225         (ctx->Light.ColorMaterialEnabled &&                             \
 226          ctx->Light.ColorMaterialBitmask & (1 << MAT_ATTRIB_##attr(side)))
 227
 228 void
 229 nv20_emit_material_ambient(struct gl_context *ctx, int emit)
 230 {
 231         const int side = emit - NOUVEAU_STATE_MATERIAL_FRONT_AMBIENT;
 232         struct nouveau_channel *chan = context_chan(ctx);
 233         struct nouveau_grobj *kelvin = context_eng3d(ctx);
 234         float (*mat)[4] = ctx->Light.Material.Attrib;
 235         float c_scene[3], c_factor[3];
 236         struct gl_light *l;
 237
 238         if (USE_COLOR_MATERIAL(AMBIENT, side)) {
 239                 COPY_3V(c_scene, mat[MAT_ATTRIB_EMISSION(side)]);
 240                 COPY_3V(c_factor, ctx->Light.Model.Ambient);
 241
 242         } else if (USE_COLOR_MATERIAL(EMISSION, side)) {
 243                 SCALE_3V(c_scene, mat[MAT_ATTRIB_AMBIENT(side)],
 244                          ctx->Light.Model.Ambient);
 245                 ASSIGN_3V(c_factor, 1, 1, 1);
 246
 247         } else {
 248                 COPY_3V(c_scene, ctx->Light._BaseColor[side]);
 249                 ZERO_3V(c_factor);
 250         }
 251
 252         BEGIN_RING(chan, kelvin, LIGHT_MODEL_AMBIENT_R(side), 3);
 253         OUT_RINGp(chan, c_scene, 3);
 254
 255         if (ctx->Light.ColorMaterialEnabled) {
 256                 BEGIN_RING(chan, kelvin, MATERIAL_FACTOR_R(side), 3);
 257                 OUT_RINGp(chan, c_factor, 3);
 258         }
 259
 260         foreach(l, &ctx->Light.EnabledList) {
 261                 const int i = l - ctx->Light.Light;
 262                 float *c_light = (USE_COLOR_MATERIAL(AMBIENT, side) ?
 263                                   l->Ambient :
 264                                   l->_MatAmbient[side]);
 265
 266                 BEGIN_RING(chan, kelvin, LIGHT_AMBIENT_R(side, i), 3);
 267                 OUT_RINGp(chan, c_light, 3);
 268         }
 269 }
 270
 271 void
 272 nv20_emit_material_diffuse(struct gl_context *ctx, int emit)
 273 {
 274         const int side = emit - NOUVEAU_STATE_MATERIAL_FRONT_DIFFUSE;
 275         struct nouveau_channel *chan = context_chan(ctx);
 276         struct nouveau_grobj *kelvin = context_eng3d(ctx);
 277         GLfloat (*mat)[4] = ctx->Light.Material.Attrib;
 278         struct gl_light *l;
 279
 280         BEGIN_RING(chan, kelvin, MATERIAL_FACTOR_A(side), 1);
 281         OUT_RINGf(chan, mat[MAT_ATTRIB_DIFFUSE(side)][3]);
 282
 283         foreach(l, &ctx->Light.EnabledList) {
 284                 const int i = l - ctx->Light.Light;
 285                 float *c_light = (USE_COLOR_MATERIAL(DIFFUSE, side) ?
 286                                   l->Diffuse :
 287                                   l->_MatDiffuse[side]);
 288
 289                 BEGIN_RING(chan, kelvin, LIGHT_DIFFUSE_R(side, i), 3);
 290                 OUT_RINGp(chan, c_light, 3);
 291         }
 292 }
 293
 294 void
 295 nv20_emit_material_specular(struct gl_context *ctx, int emit)
 296 {
 297         const int side = emit - NOUVEAU_STATE_MATERIAL_FRONT_SPECULAR;
 298         struct nouveau_channel *chan = context_chan(ctx);
 299         struct nouveau_grobj *kelvin = context_eng3d(ctx);
 300         struct gl_light *l;
 301
 302         foreach(l, &ctx->Light.EnabledList) {
 303                 const int i = l - ctx->Light.Light;
 304                 float *c_light = (USE_COLOR_MATERIAL(SPECULAR, side) ?
 305                                   l->Specular :
 306                                   l->_MatSpecular[side]);
 307
 308                 BEGIN_RING(chan, kelvin, LIGHT_SPECULAR_R(side, i), 3);
 309                 OUT_RINGp(chan, c_light, 3);
 310         }
 311 }
 312
 313 void
 314 nv20_emit_material_shininess(struct gl_context *ctx, int emit)
 315 {
 316         const int side = emit - NOUVEAU_STATE_MATERIAL_FRONT_SHININESS;
 317         struct nouveau_channel *chan = context_chan(ctx);
 318         struct nouveau_grobj *kelvin = context_eng3d(ctx);
 319         float (*mat)[4] = ctx->Light.Material.Attrib;
 320         float k[6];
 321
 322         nv10_get_shininess_coeff(
 323                 CLAMP(mat[MAT_ATTRIB_SHININESS(side)][0], 0, 1024),
 324                 k);
 325
 326         BEGIN_RING(chan, kelvin, MATERIAL_SHININESS(side), 6);
 327         OUT_RINGp(chan, k, 6);
 328 }
 329
 330 void
 331 nv20_emit_modelview(struct gl_context *ctx, int emit)
 332 {
 333         struct nouveau_context *nctx = to_nouveau_context(ctx);
 334         struct nouveau_channel *chan = context_chan(ctx);
 335         struct nouveau_grobj *kelvin = context_eng3d(ctx);
 336         GLmatrix *m = ctx->ModelviewMatrixStack.Top;
 337
 338         if (nctx->fallback != HWTNL)
 339                 return;
 340
 341         if (ctx->Light._NeedEyeCoords || ctx->Fog.Enabled ||
 342             (ctx->Texture._GenFlags & TEXGEN_NEED_EYE_COORD)) {
 343                 BEGIN_RING(chan, kelvin, NV20TCL_MODELVIEW0_MATRIX(0), 16);
 344                 OUT_RINGm(chan, m->m);
 345         }
 346
 347         if (ctx->Light.Enabled ||
 348             (ctx->Texture._GenFlags & TEXGEN_NEED_EYE_COORD)) {
 349                 int i, j;
 350
 351                 BEGIN_RING(chan, kelvin,
 352                            NV20TCL_INVERSE_MODELVIEW0_MATRIX(0), 12);
 353                 for (i = 0; i < 3; i++)
 354                         for (j = 0; j < 4; j++)
 355                                 OUT_RINGf(chan, 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_channel *chan = context_chan(ctx);
 364         struct nouveau_grobj *kelvin = context_eng3d(ctx);
 365         GLmatrix m;
 366
 367         _math_matrix_ctr(&m);
 368         get_viewport_scale(ctx, m.m);
 369
 370         if (nctx->fallback == HWTNL)
 371                 _math_matrix_mul_matrix(&m, &m, &ctx->_ModelProjectMatrix);
 372
 373         BEGIN_RING(chan, kelvin, NV20TCL_PROJECTION_MATRIX(0), 16);
 374         OUT_RINGm(chan, m.m);
 375
 376         _math_matrix_dtr(&m);
 377 }