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 #include "util/bitscan.h"
  35
  36 #define LIGHT_MODEL_AMBIENT_R(side)                     \
  37         ((side) ? NV20_3D_LIGHT_MODEL_BACK_AMBIENT_R :  \
  38          NV20_3D_LIGHT_MODEL_FRONT_AMBIENT_R)
  39 #define LIGHT_AMBIENT_R(side, i)                        \
  40         ((side) ? NV20_3D_LIGHT_BACK_AMBIENT_R(i) :     \
  41          NV20_3D_LIGHT_FRONT_AMBIENT_R(i))
  42 #define LIGHT_DIFFUSE_R(side, i)                        \
  43         ((side) ? NV20_3D_LIGHT_BACK_DIFFUSE_R(i) :     \
  44          NV20_3D_LIGHT_FRONT_DIFFUSE_R(i))
  45 #define LIGHT_SPECULAR_R(side, i)                       \
  46         ((side) ? NV20_3D_LIGHT_BACK_SPECULAR_R(i) :    \
  47          NV20_3D_LIGHT_FRONT_SPECULAR_R(i))
  48 #define MATERIAL_FACTOR_R(side)                         \
  49         ((side) ? NV20_3D_MATERIAL_FACTOR_BACK_R :      \
  50          NV20_3D_MATERIAL_FACTOR_FRONT_R)
  51 #define MATERIAL_FACTOR_A(side)                         \
  52         ((side) ? NV20_3D_MATERIAL_FACTOR_BACK_A :      \
  53          NV20_3D_MATERIAL_FACTOR_FRONT_A)
  54 #define MATERIAL_SHININESS(side)                        \
  55         ((side) ? NV20_3D_BACK_MATERIAL_SHININESS(0) :  \
  56          NV20_3D_FRONT_MATERIAL_SHININESS(0))
  57
  58 void
  59 nv20_emit_clip_plane(struct gl_context *ctx, int emit)
  60 {
  61 }
  62
  63 static inline unsigned
  64 get_material_bitmask(unsigned m)
  65 {
  66         unsigned ret = 0;
  67
  68         if (m & MAT_BIT_FRONT_EMISSION)
  69                 ret |= NV20_3D_COLOR_MATERIAL_FRONT_EMISSION_COL1;
  70         if (m & MAT_BIT_FRONT_AMBIENT)
  71                 ret |= NV20_3D_COLOR_MATERIAL_FRONT_AMBIENT_COL1;
  72         if (m & MAT_BIT_FRONT_DIFFUSE)
  73                 ret |= NV20_3D_COLOR_MATERIAL_FRONT_DIFFUSE_COL1;
  74         if (m & MAT_BIT_FRONT_SPECULAR)
  75                 ret |= NV20_3D_COLOR_MATERIAL_FRONT_SPECULAR_COL1;
  76
  77         if (m & MAT_BIT_BACK_EMISSION)
  78                 ret |= NV20_3D_COLOR_MATERIAL_BACK_EMISSION_COL1;
  79         if (m & MAT_BIT_BACK_AMBIENT)
  80                 ret |= NV20_3D_COLOR_MATERIAL_BACK_AMBIENT_COL1;
  81         if (m & MAT_BIT_BACK_DIFFUSE)
  82                 ret |= NV20_3D_COLOR_MATERIAL_BACK_DIFFUSE_COL1;
  83         if (m & MAT_BIT_BACK_SPECULAR)
  84                 ret |= NV20_3D_COLOR_MATERIAL_BACK_SPECULAR_COL1;
  85
  86         return ret;
  87 }
  88
  89 void
  90 nv20_emit_color_material(struct gl_context *ctx, int emit)
  91 {
  92         struct nouveau_pushbuf *push = context_push(ctx);
  93         unsigned mask = get_material_bitmask(ctx->Light._ColorMaterialBitmask);
  94
  95         BEGIN_NV04(push, NV20_3D(COLOR_MATERIAL), 1);
  96         PUSH_DATA (push, 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 NV20_3D_FOG_MODE_LINEAR_SIGNED;
 105         case GL_EXP:
 106                 return NV20_3D_FOG_MODE_EXP_SIGNED;
 107         case GL_EXP2:
 108                 return NV20_3D_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 NV20_3D_FOG_MODE_LINEAR_UNSIGNED;
 120         case GL_EXP:
 121                 return NV20_3D_FOG_MODE_EXP_UNSIGNED;
 122         case GL_EXP2:
 123                 return NV20_3D_FOG_MODE_EXP2_UNSIGNED;
 124         default:
 125                 assert(0);
 126         }
 127 }
 128
 129 static unsigned
 130 get_fog_source(unsigned source, unsigned distance_mode)
 131 {
 132         switch (source) {
 133         case GL_FOG_COORDINATE_EXT:
 134                 return NV20_3D_FOG_COORD_FOG;
 135         case GL_FRAGMENT_DEPTH_EXT:
 136                 switch (distance_mode) {
 137                 case GL_EYE_PLANE_ABSOLUTE_NV:
 138                         return NV20_3D_FOG_COORD_DIST_ORTHOGONAL_ABS;
 139                 case GL_EYE_PLANE:
 140                         return NV20_3D_FOG_COORD_DIST_ORTHOGONAL;
 141                 case GL_EYE_RADIAL_NV:
 142                         return NV20_3D_FOG_COORD_DIST_RADIAL;
 143                 default:
 144                         assert(0);
 145                 }
 146         default:
 147                 assert(0);
 148         }
 149 }
 150
 151 void
 152 nv20_emit_fog(struct gl_context *ctx, int emit)
 153 {
 154         struct nouveau_context *nctx = to_nouveau_context(ctx);
 155         struct nouveau_pushbuf *push = context_push(ctx);
 156         struct gl_fog_attrib *f = &ctx->Fog;
 157         unsigned source = nctx->fallback == HWTNL ?
 158                 f->FogCoordinateSource : GL_FOG_COORDINATE_EXT;
 159         float k[3];
 160
 161         nv10_get_fog_coeff(ctx, k);
 162
 163         BEGIN_NV04(push, NV20_3D(FOG_MODE), 4);
 164         PUSH_DATA (push, ((source == GL_FRAGMENT_DEPTH_EXT &&
 165                          f->FogDistanceMode == GL_EYE_PLANE_ABSOLUTE_NV) ?
 166                         get_fog_mode_unsigned(f->Mode) :
 167                         get_fog_mode_signed(f->Mode)));
 168         PUSH_DATA (push, get_fog_source(source, f->FogDistanceMode));
 169         PUSH_DATAb(push, f->Enabled);
 170         PUSH_DATA (push, pack_rgba_f(MESA_FORMAT_R8G8B8A8_UNORM, f->Color));
 171
 172         BEGIN_NV04(push, NV20_3D(FOG_COEFF(0)), 3);
 173         PUSH_DATAp(push, k, 3);
 174 }
 175
 176 void
 177 nv20_emit_light_model(struct gl_context *ctx, int emit)
 178 {
 179         struct nouveau_pushbuf *push = context_push(ctx);
 180         struct gl_lightmodel *m = &ctx->Light.Model;
 181
 182         BEGIN_NV04(push, NV20_3D(SEPARATE_SPECULAR_ENABLE), 1);
 183         PUSH_DATAb(push, m->ColorControl == GL_SEPARATE_SPECULAR_COLOR);
 184
 185         BEGIN_NV04(push, NV20_3D(LIGHT_MODEL), 1);
 186         PUSH_DATA (push, ((m->LocalViewer ?
 187                          NV20_3D_LIGHT_MODEL_VIEWER_LOCAL :
 188                          NV20_3D_LIGHT_MODEL_VIEWER_NONLOCAL) |
 189                         (_mesa_need_secondary_color(ctx) ?
 190                          NV20_3D_LIGHT_MODEL_SEPARATE_SPECULAR :
 191                          0)));
 192
 193         BEGIN_NV04(push, NV20_3D(LIGHT_MODEL_TWO_SIDE_ENABLE), 1);
 194         PUSH_DATAb(push, ctx->Light.Model.TwoSide);
 195 }
 196
 197 void
 198 nv20_emit_light_source(struct gl_context *ctx, int emit)
 199 {
 200         const int i = emit - NOUVEAU_STATE_LIGHT_SOURCE0;
 201         struct nouveau_pushbuf *push = context_push(ctx);
 202         struct gl_light *l = &ctx->Light.Light[i];
 203
 204         if (l->_Flags & LIGHT_POSITIONAL) {
 205                 BEGIN_NV04(push, NV20_3D(LIGHT_POSITION_X(i)), 3);
 206                 PUSH_DATAp(push, l->_Position, 3);
 207
 208                 BEGIN_NV04(push, NV20_3D(LIGHT_ATTENUATION_CONSTANT(i)), 3);
 209                 PUSH_DATAf(push, l->ConstantAttenuation);
 210                 PUSH_DATAf(push, l->LinearAttenuation);
 211                 PUSH_DATAf(push, l->QuadraticAttenuation);
 212
 213         } else {
 214                 BEGIN_NV04(push, NV20_3D(LIGHT_DIRECTION_X(i)), 3);
 215                 PUSH_DATAp(push, l->_VP_inf_norm, 3);
 216
 217                 BEGIN_NV04(push, NV20_3D(LIGHT_HALF_VECTOR_X(i)), 3);
 218                 PUSH_DATAp(push, l->_h_inf_norm, 3);
 219         }
 220
 221         if (l->_Flags & LIGHT_SPOT) {
 222                 float k[7];
 223
 224                 nv10_get_spot_coeff(l, k);
 225
 226                 BEGIN_NV04(push, NV20_3D(LIGHT_SPOT_CUTOFF(i, 0)), 7);
 227                 PUSH_DATAp(push, k, 7);
 228         }
 229 }
 230
 231 #define USE_COLOR_MATERIAL(attr, side)                                  \
 232         (ctx->Light.ColorMaterialEnabled &&                             \
 233          ctx->Light._ColorMaterialBitmask & (1 << MAT_ATTRIB_##attr(side)))
 234
 235 void
 236 nv20_emit_material_ambient(struct gl_context *ctx, int emit)
 237 {
 238         const int side = emit - NOUVEAU_STATE_MATERIAL_FRONT_AMBIENT;
 239         struct nouveau_pushbuf *push = context_push(ctx);
 240         float (*mat)[4] = ctx->Light.Material.Attrib;
 241         float c_scene[3], c_factor[3];
 242         GLbitfield mask;
 243
 244         if (USE_COLOR_MATERIAL(AMBIENT, side)) {
 245                 COPY_3V(c_scene, mat[MAT_ATTRIB_EMISSION(side)]);
 246                 COPY_3V(c_factor, ctx->Light.Model.Ambient);
 247
 248         } else if (USE_COLOR_MATERIAL(EMISSION, side)) {
 249                 SCALE_3V(c_scene, mat[MAT_ATTRIB_AMBIENT(side)],
 250                          ctx->Light.Model.Ambient);
 251                 ASSIGN_3V(c_factor, 1, 1, 1);
 252
 253         } else {
 254                 COPY_3V(c_scene, ctx->Light._BaseColor[side]);
 255                 ZERO_3V(c_factor);
 256         }
 257
 258         BEGIN_NV04(push, SUBC_3D(LIGHT_MODEL_AMBIENT_R(side)), 3);
 259         PUSH_DATAp(push, c_scene, 3);
 260
 261         if (ctx->Light.ColorMaterialEnabled) {
 262                 BEGIN_NV04(push, SUBC_3D(MATERIAL_FACTOR_R(side)), 3);
 263                 PUSH_DATAp(push, c_factor, 3);
 264         }
 265
 266         mask = ctx->Light._EnabledLights;
 267         while (mask) {
 268                 const int i = u_bit_scan(&mask);
 269                 struct gl_light *l = &ctx->Light.Light[i];
 270                 float *c_light = (USE_COLOR_MATERIAL(AMBIENT, side) ?
 271                                   l->Ambient :
 272                                   l->_MatAmbient[side]);
 273
 274                 BEGIN_NV04(push, SUBC_3D(LIGHT_AMBIENT_R(side, i)), 3);
 275                 PUSH_DATAp(push, c_light, 3);
 276         }
 277 }
 278
 279 void
 280 nv20_emit_material_diffuse(struct gl_context *ctx, int emit)
 281 {
 282         const int side = emit - NOUVEAU_STATE_MATERIAL_FRONT_DIFFUSE;
 283         struct nouveau_pushbuf *push = context_push(ctx);
 284         GLfloat (*mat)[4] = ctx->Light.Material.Attrib;
 285         GLbitfield mask;
 286
 287         BEGIN_NV04(push, SUBC_3D(MATERIAL_FACTOR_A(side)), 1);
 288         PUSH_DATAf(push, mat[MAT_ATTRIB_DIFFUSE(side)][3]);
 289
 290         mask = ctx->Light._EnabledLights;
 291         while (mask) {
 292                 const int i = u_bit_scan(&mask);
 293                 struct gl_light *l = &ctx->Light.Light[i];
 294                 float *c_light = (USE_COLOR_MATERIAL(DIFFUSE, side) ?
 295                                   l->Diffuse :
 296                                   l->_MatDiffuse[side]);
 297
 298                 BEGIN_NV04(push, SUBC_3D(LIGHT_DIFFUSE_R(side, i)), 3);
 299                 PUSH_DATAp(push, c_light, 3);
 300         }
 301 }
 302
 303 void
 304 nv20_emit_material_specular(struct gl_context *ctx, int emit)
 305 {
 306         const int side = emit - NOUVEAU_STATE_MATERIAL_FRONT_SPECULAR;
 307         struct nouveau_pushbuf *push = context_push(ctx);
 308         GLbitfield mask;
 309
 310         mask = ctx->Light._EnabledLights;
 311         while (mask) {
 312                 const int i = u_bit_scan(&mask);
 313                 struct gl_light *l = &ctx->Light.Light[i];
 314                 float *c_light = (USE_COLOR_MATERIAL(SPECULAR, side) ?
 315                                   l->Specular :
 316                                   l->_MatSpecular[side]);
 317
 318                 BEGIN_NV04(push, SUBC_3D(LIGHT_SPECULAR_R(side, i)), 3);
 319                 PUSH_DATAp(push, c_light, 3);
 320         }
 321 }
 322
 323 void
 324 nv20_emit_material_shininess(struct gl_context *ctx, int emit)
 325 {
 326         const int side = emit - NOUVEAU_STATE_MATERIAL_FRONT_SHININESS;
 327         struct nouveau_pushbuf *push = context_push(ctx);
 328         float (*mat)[4] = ctx->Light.Material.Attrib;
 329         float k[6];
 330
 331         nv10_get_shininess_coeff(
 332                 CLAMP(mat[MAT_ATTRIB_SHININESS(side)][0], 0, 1024),
 333                 k);
 334
 335         BEGIN_NV04(push, SUBC_3D(MATERIAL_SHININESS(side)), 6);
 336         PUSH_DATAp(push, k, 6);
 337 }
 338
 339 void
 340 nv20_emit_modelview(struct gl_context *ctx, int emit)
 341 {
 342         struct nouveau_context *nctx = to_nouveau_context(ctx);
 343         struct nouveau_pushbuf *push = context_push(ctx);
 344         GLmatrix *m = ctx->ModelviewMatrixStack.Top;
 345
 346         if (nctx->fallback != HWTNL)
 347                 return;
 348
 349         if (ctx->Light._NeedEyeCoords || ctx->Fog.Enabled ||
 350             (ctx->Texture._GenFlags & TEXGEN_NEED_EYE_COORD)) {
 351                 BEGIN_NV04(push, NV20_3D(MODELVIEW_MATRIX(0, 0)), 16);
 352                 PUSH_DATAm(push, m->m);
 353         }
 354
 355         if (ctx->Light.Enabled ||
 356             (ctx->Texture._GenFlags & TEXGEN_NEED_EYE_COORD)) {
 357                 int i, j;
 358
 359                 BEGIN_NV04(push, NV20_3D(INVERSE_MODELVIEW_MATRIX(0, 0)), 12);
 360                 for (i = 0; i < 3; i++)
 361                         for (j = 0; j < 4; j++)
 362                                 PUSH_DATAf(push, m->inv[4*i + j]);
 363         }
 364 }
 365
 366 void
 367 nv20_emit_projection(struct gl_context *ctx, int emit)
 368 {
 369         struct nouveau_context *nctx = to_nouveau_context(ctx);
 370         struct nouveau_pushbuf *push = context_push(ctx);
 371         GLmatrix m;
 372
 373         _math_matrix_ctr(&m);
 374         get_viewport_scale(ctx, m.m);
 375
 376         if (nctx->fallback == HWTNL)
 377                 _math_matrix_mul_matrix(&m, &m, &ctx->_ModelProjectMatrix);
 378
 379         BEGIN_NV04(push, NV20_3D(PROJECTION_MATRIX(0)), 16);
 380         PUSH_DATAm(push, m.m);
 381
 382         _math_matrix_dtr(&m);
 383 }