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 void
  36 nv20_emit_clip_plane(GLcontext *ctx, int emit)
  37 {
  38 }
  39
  40 static inline unsigned
  41 get_material_bitmask(unsigned m)
  42 {
  43         unsigned ret = 0;
  44
  45         if (m & MAT_BIT_FRONT_EMISSION)
  46                 ret |= NV20TCL_COLOR_MATERIAL_FRONT_EMISSION_COL1;
  47         if (m & MAT_BIT_FRONT_AMBIENT)
  48                 ret |= NV20TCL_COLOR_MATERIAL_FRONT_AMBIENT_COL1;
  49         if (m & MAT_BIT_FRONT_DIFFUSE)
  50                 ret |= NV20TCL_COLOR_MATERIAL_FRONT_DIFFUSE_COL1;
  51         if (m & MAT_BIT_FRONT_SPECULAR)
  52                 ret |= NV20TCL_COLOR_MATERIAL_FRONT_SPECULAR_COL1;
  53
  54         if (m & MAT_BIT_BACK_EMISSION)
  55                 ret |= NV20TCL_COLOR_MATERIAL_BACK_EMISSION_COL1;
  56         if (m & MAT_BIT_BACK_AMBIENT)
  57                 ret |= NV20TCL_COLOR_MATERIAL_BACK_AMBIENT_COL1;
  58         if (m & MAT_BIT_BACK_DIFFUSE)
  59                 ret |= NV20TCL_COLOR_MATERIAL_BACK_DIFFUSE_COL1;
  60         if (m & MAT_BIT_BACK_SPECULAR)
  61                 ret |= NV20TCL_COLOR_MATERIAL_BACK_SPECULAR_COL1;
  62
  63         return ret;
  64 }
  65
  66 void
  67 nv20_emit_color_material(GLcontext *ctx, int emit)
  68 {
  69         struct nouveau_channel *chan = context_chan(ctx);
  70         struct nouveau_grobj *kelvin = context_eng3d(ctx);
  71         unsigned mask = get_material_bitmask(ctx->Light.ColorMaterialBitmask);
  72
  73         BEGIN_RING(chan, kelvin, NV20TCL_COLOR_MATERIAL, 1);
  74         OUT_RING(chan, ctx->Light.ColorMaterialEnabled ? mask : 0);
  75 }
  76
  77 static unsigned
  78 get_fog_mode_signed(unsigned mode)
  79 {
  80         switch (mode) {
  81         case GL_LINEAR:
  82                 return NV20TCL_FOG_MODE_LINEAR_SIGNED;
  83         case GL_EXP:
  84                 return NV20TCL_FOG_MODE_EXP_SIGNED;
  85         case GL_EXP2:
  86                 return NV20TCL_FOG_MODE_EXP2_SIGNED;
  87         default:
  88                 assert(0);
  89         }
  90 }
  91
  92 static unsigned
  93 get_fog_mode_unsigned(unsigned mode)
  94 {
  95         switch (mode) {
  96         case GL_LINEAR:
  97                 return NV20TCL_FOG_MODE_LINEAR_UNSIGNED;
  98         case GL_EXP:
  99                 return NV20TCL_FOG_MODE_EXP_UNSIGNED;
 100         case GL_EXP2:
 101                 return NV20TCL_FOG_MODE_EXP2_UNSIGNED;
 102         default:
 103                 assert(0);
 104         }
 105 }
 106
 107 static unsigned
 108 get_fog_source(unsigned source)
 109 {
 110         switch (source) {
 111         case GL_FOG_COORDINATE_EXT:
 112                 return NV20TCL_FOG_COORD_FOG;
 113         case GL_FRAGMENT_DEPTH_EXT:
 114                 return NV20TCL_FOG_COORD_DIST_ORTHOGONAL_ABS;
 115         default:
 116                 assert(0);
 117         }
 118 }
 119
 120 void
 121 nv20_emit_fog(GLcontext *ctx, int emit)
 122 {
 123         struct nouveau_context *nctx = to_nouveau_context(ctx);
 124         struct nouveau_channel *chan = context_chan(ctx);
 125         struct nouveau_grobj *kelvin = context_eng3d(ctx);
 126         struct gl_fog_attrib *f = &ctx->Fog;
 127         unsigned source = nctx->fallback == HWTNL ?
 128                 f->FogCoordinateSource : GL_FOG_COORDINATE_EXT;
 129         float k[3];
 130
 131         nv10_get_fog_coeff(ctx, k);
 132
 133         BEGIN_RING(chan, kelvin, NV20TCL_FOG_MODE, 4);
 134         OUT_RING(chan, (source == GL_FOG_COORDINATE_EXT ?
 135                         get_fog_mode_signed(f->Mode) :
 136                         get_fog_mode_unsigned(f->Mode)));
 137         OUT_RING(chan, get_fog_source(source));
 138         OUT_RING(chan, f->Enabled ? 1 : 0);
 139         OUT_RING(chan, pack_rgba_f(MESA_FORMAT_RGBA8888_REV, f->Color));
 140
 141         BEGIN_RING(chan, kelvin, NV20TCL_FOG_EQUATION_CONSTANT, 3);
 142         OUT_RINGp(chan, k, 3);
 143 }
 144
 145 void
 146 nv20_emit_light_model(GLcontext *ctx, int emit)
 147 {
 148         struct nouveau_channel *chan = context_chan(ctx);
 149         struct nouveau_grobj *kelvin = context_eng3d(ctx);
 150         struct gl_lightmodel *m = &ctx->Light.Model;
 151
 152         BEGIN_RING(chan, kelvin, NV20TCL_SEPARATE_SPECULAR_ENABLE, 1);
 153         OUT_RING(chan, m->ColorControl == GL_SEPARATE_SPECULAR_COLOR ? 1 : 0);
 154
 155         BEGIN_RING(chan, kelvin, NV20TCL_LIGHT_MODEL, 1);
 156         OUT_RING(chan, ((m->LocalViewer ?
 157                          NV20TCL_LIGHT_MODEL_VIEWER_LOCAL :
 158                          NV20TCL_LIGHT_MODEL_VIEWER_NONLOCAL) |
 159                         (NEED_SECONDARY_COLOR(ctx) ?
 160                          NV20TCL_LIGHT_MODEL_SEPARATE_SPECULAR :
 161                          0)));
 162
 163         BEGIN_RING(chan, kelvin, NV20TCL_LIGHT_MODEL_TWO_SIDE_ENABLE, 1);
 164         OUT_RING(chan, ctx->Light.Model.TwoSide ? 1 : 0);
 165 }
 166
 167 void
 168 nv20_emit_light_source(GLcontext *ctx, int emit)
 169 {
 170         const int i = emit - NOUVEAU_STATE_LIGHT_SOURCE0;
 171         struct nouveau_channel *chan = context_chan(ctx);
 172         struct nouveau_grobj *kelvin = context_eng3d(ctx);
 173         struct gl_light *l = &ctx->Light.Light[i];
 174
 175         if (l->_Flags & LIGHT_POSITIONAL) {
 176                 BEGIN_RING(chan, kelvin, NV20TCL_LIGHT_POSITION_X(i), 3);
 177                 OUT_RINGp(chan, l->_Position, 3);
 178
 179                 BEGIN_RING(chan, kelvin, NV20TCL_LIGHT_ATTENUATION_CONSTANT(i), 3);
 180                 OUT_RINGf(chan, l->ConstantAttenuation);
 181                 OUT_RINGf(chan, l->LinearAttenuation);
 182                 OUT_RINGf(chan, l->QuadraticAttenuation);
 183
 184         } else {
 185                 BEGIN_RING(chan, kelvin, NV20TCL_LIGHT_DIRECTION_X(i), 3);
 186                 OUT_RINGp(chan, l->_VP_inf_norm, 3);
 187
 188                 BEGIN_RING(chan, kelvin, NV20TCL_LIGHT_HALF_VECTOR_X(i), 3);
 189                 OUT_RINGp(chan, l->_h_inf_norm, 3);
 190         }
 191
 192         if (l->_Flags & LIGHT_SPOT) {
 193                 float k[7];
 194
 195                 nv10_get_spot_coeff(l, k);
 196
 197                 BEGIN_RING(chan, kelvin, NV20TCL_LIGHT_SPOT_CUTOFF_A(i), 7);
 198                 OUT_RINGp(chan, k, 7);
 199         }
 200 }
 201
 202 #define USE_COLOR_MATERIAL(attr, side)                                  \
 203         (ctx->Light.ColorMaterialEnabled &&                             \
 204          ctx->Light.ColorMaterialBitmask & (1 << MAT_ATTRIB_##attr(side)))
 205
 206 void
 207 nv20_emit_material_ambient(GLcontext *ctx, int emit)
 208 {
 209         const int side = emit - NOUVEAU_STATE_MATERIAL_FRONT_AMBIENT;
 210         struct nouveau_channel *chan = context_chan(ctx);
 211         struct nouveau_grobj *kelvin = context_eng3d(ctx);
 212         float (*mat)[4] = ctx->Light.Material.Attrib;
 213         uint32_t m_scene[] = { NV20TCL_LIGHT_MODEL_FRONT_AMBIENT_R,
 214                                NV20TCL_LIGHT_MODEL_BACK_AMBIENT_R };
 215         uint32_t m_factor[] = { NV20TCL_MATERIAL_FACTOR_FRONT_R,
 216                               NV20TCL_MATERIAL_FACTOR_BACK_R };
 217         float c_scene[3], c_factor[3];
 218         struct gl_light *l;
 219
 220         if (USE_COLOR_MATERIAL(AMBIENT, side)) {
 221                 COPY_3V(c_scene, mat[MAT_ATTRIB_EMISSION(side)]);
 222                 COPY_3V(c_factor, ctx->Light.Model.Ambient);
 223
 224         } else if (USE_COLOR_MATERIAL(EMISSION, side)) {
 225                 SCALE_3V(c_scene, mat[MAT_ATTRIB_AMBIENT(side)],
 226                          ctx->Light.Model.Ambient);
 227                 ASSIGN_3V(c_factor, 1, 1, 1);
 228
 229         } else {
 230                 COPY_3V(c_scene, ctx->Light._BaseColor[side]);
 231                 ZERO_3V(c_factor);
 232         }
 233
 234         BEGIN_RING(chan, kelvin, m_scene[side], 3);
 235         OUT_RINGp(chan, c_scene, 3);
 236
 237         if (ctx->Light.ColorMaterialEnabled) {
 238                 BEGIN_RING(chan, kelvin, m_factor[side], 3);
 239                 OUT_RINGp(chan, c_factor, 3);
 240         }
 241
 242         foreach(l, &ctx->Light.EnabledList) {
 243                 const int i = l - ctx->Light.Light;
 244                 uint32_t m_light[] = { NV20TCL_LIGHT_FRONT_AMBIENT_R(i),
 245                                       NV20TCL_LIGHT_BACK_AMBIENT_R(i) };
 246                 float *c_light = (USE_COLOR_MATERIAL(AMBIENT, side) ?
 247                                   l->Ambient :
 248                                   l->_MatAmbient[side]);
 249
 250                 BEGIN_RING(chan, kelvin, m_light[side], 3);
 251                 OUT_RINGp(chan, c_light, 3);
 252         }
 253 }
 254
 255 void
 256 nv20_emit_material_diffuse(GLcontext *ctx, int emit)
 257 {
 258         const int side = emit - NOUVEAU_STATE_MATERIAL_FRONT_DIFFUSE;
 259         struct nouveau_channel *chan = context_chan(ctx);
 260         struct nouveau_grobj *kelvin = context_eng3d(ctx);
 261         GLfloat (*mat)[4] = ctx->Light.Material.Attrib;
 262         uint32_t m_factor[] = { NV20TCL_MATERIAL_FACTOR_FRONT_A,
 263                                 NV20TCL_MATERIAL_FACTOR_BACK_A };
 264         struct gl_light *l;
 265
 266         BEGIN_RING(chan, kelvin, m_factor[side], 1);
 267         OUT_RINGf(chan, mat[MAT_ATTRIB_DIFFUSE(side)][3]);
 268
 269         foreach(l, &ctx->Light.EnabledList) {
 270                 const int i = l - ctx->Light.Light;
 271                 uint32_t m_light[] = { NV20TCL_LIGHT_FRONT_DIFFUSE_R(i),
 272                                        NV20TCL_LIGHT_BACK_DIFFUSE_R(i) };
 273                 float *c_light = (USE_COLOR_MATERIAL(DIFFUSE, side) ?
 274                                   l->Diffuse :
 275                                   l->_MatDiffuse[side]);
 276
 277                 BEGIN_RING(chan, kelvin, m_light[side], 3);
 278                 OUT_RINGp(chan, c_light, 3);
 279         }
 280 }
 281
 282 void
 283 nv20_emit_material_specular(GLcontext *ctx, int emit)
 284 {
 285         const int side = emit - NOUVEAU_STATE_MATERIAL_FRONT_SPECULAR;
 286         struct nouveau_channel *chan = context_chan(ctx);
 287         struct nouveau_grobj *kelvin = context_eng3d(ctx);
 288         struct gl_light *l;
 289
 290         foreach(l, &ctx->Light.EnabledList) {
 291                 const int i = l - ctx->Light.Light;
 292                 uint32_t m_light[] = { NV20TCL_LIGHT_FRONT_SPECULAR_R(i),
 293                                        NV20TCL_LIGHT_BACK_SPECULAR_R(i) };
 294                 float *c_light = (USE_COLOR_MATERIAL(SPECULAR, side) ?
 295                                   l->Specular :
 296                                   l->_MatSpecular[side]);
 297
 298                 BEGIN_RING(chan, kelvin, m_light[side], 3);
 299                 OUT_RINGp(chan, c_light, 3);
 300         }
 301 }
 302
 303 void
 304 nv20_emit_material_shininess(GLcontext *ctx, int emit)
 305 {
 306         const int side = emit - NOUVEAU_STATE_MATERIAL_FRONT_SHININESS;
 307         struct nouveau_channel *chan = context_chan(ctx);
 308         struct nouveau_grobj *kelvin = context_eng3d(ctx);
 309         float (*mat)[4] = ctx->Light.Material.Attrib;
 310         uint32_t mthd[] = { NV20TCL_FRONT_MATERIAL_SHININESS(0),
 311                             NV20TCL_BACK_MATERIAL_SHININESS(0) };
 312         float k[6];
 313
 314         nv10_get_shininess_coeff(
 315                 CLAMP(mat[MAT_ATTRIB_SHININESS(side)][0], 0, 1024),
 316                 k);
 317
 318         BEGIN_RING(chan, kelvin, mthd[side], 6);
 319         OUT_RINGp(chan, k, 6);
 320 }
 321
 322 void
 323 nv20_emit_modelview(GLcontext *ctx, int emit)
 324 {
 325         struct nouveau_context *nctx = to_nouveau_context(ctx);
 326         struct nouveau_channel *chan = context_chan(ctx);
 327         struct nouveau_grobj *kelvin = context_eng3d(ctx);
 328         GLmatrix *m = ctx->ModelviewMatrixStack.Top;
 329
 330         if (nctx->fallback != HWTNL)
 331                 return;
 332
 333         if (ctx->Light._NeedEyeCoords || ctx->Fog.Enabled ||
 334             (ctx->Texture._GenFlags & TEXGEN_NEED_EYE_COORD)) {
 335                 BEGIN_RING(chan, kelvin, NV20TCL_MODELVIEW0_MATRIX(0), 16);
 336                 OUT_RINGm(chan, m->m);
 337         }
 338
 339         if (ctx->Light.Enabled ||
 340             (ctx->Texture._GenFlags & TEXGEN_NEED_EYE_COORD)) {
 341                 int i, j;
 342
 343                 BEGIN_RING(chan, kelvin,
 344                            NV20TCL_INVERSE_MODELVIEW0_MATRIX(0), 12);
 345                 for (i = 0; i < 3; i++)
 346                         for (j = 0; j < 4; j++)
 347                                 OUT_RINGf(chan, m->inv[4*i + j]);
 348         }
 349 }
 350
 351 void
 352 nv20_emit_projection(GLcontext *ctx, int emit)
 353 {
 354         struct nouveau_context *nctx = to_nouveau_context(ctx);
 355         struct nouveau_channel *chan = context_chan(ctx);
 356         struct nouveau_grobj *kelvin = context_eng3d(ctx);
 357         GLmatrix m;
 358
 359         _math_matrix_ctr(&m);
 360         get_viewport_scale(ctx, m.m);
 361
 362         if (nctx->fallback == HWTNL)
 363                 _math_matrix_mul_matrix(&m, &m, &ctx->_ModelProjectMatrix);
 364
 365         BEGIN_RING(chan, kelvin, NV20TCL_PROJECTION_MATRIX(0), 16);
 366         OUT_RINGm(chan, m.m);
 367
 368         _math_matrix_dtr(&m);
 369 }