src/mesa/drivers/dri/nouveau/nv04_state_raster.c

   1 /*
   2  * Copyright (C) 2009 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_util.h"
  30 #include "nouveau_class.h"
  31 #include "nv04_driver.h"
  32
  33 static unsigned
  34 get_comparison_op(unsigned op)
  35 {
  36         switch (op) {
  37         case GL_NEVER:
  38                 return 0x1;
  39         case GL_LESS:
  40                 return 0x2;
  41         case GL_EQUAL:
  42                 return 0x3;
  43         case GL_LEQUAL:
  44                 return 0x4;
  45         case GL_GREATER:
  46                 return 0x5;
  47         case GL_NOTEQUAL:
  48                 return 0x6;
  49         case GL_GEQUAL:
  50                 return 0x7;
  51         case GL_ALWAYS:
  52                 return 0x8;
  53         default:
  54                 assert(0);
  55         }
  56 }
  57
  58 static unsigned
  59 get_stencil_op(unsigned op)
  60 {
  61         switch (op) {
  62         case GL_KEEP:
  63                 return 0x1;
  64         case GL_ZERO:
  65                 return 0x2;
  66         case GL_REPLACE:
  67                 return 0x3;
  68         case GL_INCR:
  69                 return 0x4;
  70         case GL_DECR:
  71                 return 0x5;
  72         case GL_INVERT:
  73                 return 0x6;
  74         case GL_INCR_WRAP:
  75                 return 0x7;
  76         case GL_DECR_WRAP:
  77                 return 0x8;
  78         default:
  79                 assert(0);
  80         }
  81 }
  82
  83 static unsigned
  84 get_texenv_mode(unsigned mode)
  85 {
  86         switch (mode) {
  87         case GL_REPLACE:
  88                 return 0x1;
  89         case GL_DECAL:
  90                 return 0x3;
  91         case GL_MODULATE:
  92                 return 0x4;
  93         default:
  94                 assert(0);
  95         }
  96 }
  97
  98 static unsigned
  99 get_blend_func(unsigned func)
 100 {
 101         switch (func) {
 102         case GL_ZERO:
 103                 return 0x1;
 104         case GL_ONE:
 105                 return 0x2;
 106         case GL_SRC_COLOR:
 107                 return 0x3;
 108         case GL_ONE_MINUS_SRC_COLOR:
 109                 return 0x4;
 110         case GL_SRC_ALPHA:
 111                 return 0x5;
 112         case GL_ONE_MINUS_SRC_ALPHA:
 113                 return 0x6;
 114         case GL_DST_ALPHA:
 115                 return 0x7;
 116         case GL_ONE_MINUS_DST_ALPHA:
 117                 return 0x8;
 118         case GL_DST_COLOR:
 119                 return 0x9;
 120         case GL_ONE_MINUS_DST_COLOR:
 121                 return 0xa;
 122         case GL_SRC_ALPHA_SATURATE:
 123                 return 0xb;
 124         default:
 125                 assert(0);
 126         }
 127 }
 128
 129 void
 130 nv04_defer_control(GLcontext *ctx, int emit)
 131 {
 132         context_dirty(ctx, CONTROL);
 133 }
 134
 135 void
 136 nv04_emit_control(GLcontext *ctx, int emit)
 137 {
 138         struct nouveau_channel *chan = context_chan(ctx);
 139         struct nouveau_grobj *fahrenheit = nv04_context_engine(ctx);
 140
 141         if (nv04_mtex_engine(fahrenheit)) {
 142                 int cull_mode = ctx->Polygon.CullFaceMode;
 143                 int front_face = ctx->Polygon.FrontFace;
 144                 uint32_t ctrl0 = 1 << 30 |
 145                         NV04_MULTITEX_TRIANGLE_CONTROL0_ORIGIN;
 146                 uint32_t ctrl1 = 0, ctrl2 = 0;
 147
 148                 /* Color mask. */
 149                 if (ctx->Color.ColorMask[0][RCOMP])
 150                         ctrl0 |= NV04_MULTITEX_TRIANGLE_CONTROL0_RED_WRITE;
 151                 if (ctx->Color.ColorMask[0][GCOMP])
 152                         ctrl0 |= NV04_MULTITEX_TRIANGLE_CONTROL0_GREEN_WRITE;
 153                 if (ctx->Color.ColorMask[0][BCOMP])
 154                         ctrl0 |= NV04_MULTITEX_TRIANGLE_CONTROL0_BLUE_WRITE;
 155                 if (ctx->Color.ColorMask[0][ACOMP])
 156                         ctrl0 |= NV04_MULTITEX_TRIANGLE_CONTROL0_ALPHA_WRITE;
 157
 158                 /* Dithering. */
 159                 if (ctx->Color.DitherFlag)
 160                         ctrl0 |= NV04_MULTITEX_TRIANGLE_CONTROL0_DITHER_ENABLE;
 161
 162                 /* Cull mode. */
 163                 if (!ctx->Polygon.CullFlag)
 164                         ctrl0 |= NV04_MULTITEX_TRIANGLE_CONTROL0_CULL_MODE_NONE;
 165                 else if (cull_mode == GL_FRONT_AND_BACK)
 166                         ctrl0 |= NV04_MULTITEX_TRIANGLE_CONTROL0_CULL_MODE_BOTH;
 167                 else
 168                         ctrl0 |= (cull_mode == GL_FRONT) ^ (front_face == GL_CCW) ?
 169                                 NV04_MULTITEX_TRIANGLE_CONTROL0_CULL_MODE_CW :
 170                                 NV04_MULTITEX_TRIANGLE_CONTROL0_CULL_MODE_CCW;
 171
 172                 /* Depth test. */
 173                 if (ctx->Depth.Test)
 174                         ctrl0 |= NV04_MULTITEX_TRIANGLE_CONTROL0_Z_ENABLE;
 175
 176                 if (ctx->Depth.Mask)
 177                         ctrl0 |= NV04_MULTITEX_TRIANGLE_CONTROL0_Z_WRITE;
 178
 179                 ctrl0 |= get_comparison_op(ctx->Depth.Func) << 16;
 180
 181                 /* Alpha test. */
 182                 if (ctx->Color.AlphaEnabled)
 183                         ctrl0 |= NV04_MULTITEX_TRIANGLE_CONTROL0_ALPHA_ENABLE;
 184
 185                 ctrl0 |= get_comparison_op(ctx->Color.AlphaFunc) << 8 |
 186                         FLOAT_TO_UBYTE(ctx->Color.AlphaRef);
 187
 188                 /* Stencil test. */
 189                 if (ctx->Stencil.WriteMask[0])
 190                         ctrl0 |= NV04_MULTITEX_TRIANGLE_CONTROL0_STENCIL_WRITE;
 191
 192                 if (ctx->Stencil.Enabled)
 193                         ctrl1 |= NV04_MULTITEX_TRIANGLE_CONTROL1_STENCIL_ENABLE;
 194
 195                 ctrl1 |= get_comparison_op(ctx->Stencil.Function[0]) << 4 |
 196                         ctx->Stencil.Ref[0] << 8 |
 197                         ctx->Stencil.ValueMask[0] << 16 |
 198                         ctx->Stencil.WriteMask[0] << 24;
 199
 200                 ctrl2 |= get_stencil_op(ctx->Stencil.ZPassFunc[0]) << 8 |
 201                         get_stencil_op(ctx->Stencil.ZFailFunc[0]) << 4 |
 202                         get_stencil_op(ctx->Stencil.FailFunc[0]);
 203
 204                 BEGIN_RING(chan, fahrenheit, NV04_MULTITEX_TRIANGLE_CONTROL0, 3);
 205                 OUT_RING(chan, ctrl0);
 206                 OUT_RING(chan, ctrl1);
 207                 OUT_RING(chan, ctrl2);
 208
 209         } else {
 210                 int cull_mode = ctx->Polygon.CullFaceMode;
 211                 int front_face = ctx->Polygon.FrontFace;
 212                 uint32_t ctrl = 1 << 30 |
 213                         NV04_TEXTURED_TRIANGLE_CONTROL_ORIGIN;
 214
 215                 /* Dithering. */
 216                 if (ctx->Color.DitherFlag)
 217                         ctrl |= NV04_TEXTURED_TRIANGLE_CONTROL_DITHER_ENABLE;
 218
 219                 /* Cull mode. */
 220                 if (!ctx->Polygon.CullFlag)
 221                         ctrl |= NV04_TEXTURED_TRIANGLE_CONTROL_CULL_MODE_NONE;
 222                 else if (cull_mode == GL_FRONT_AND_BACK)
 223                         ctrl |= NV04_TEXTURED_TRIANGLE_CONTROL_CULL_MODE_BOTH;
 224                 else
 225                         ctrl |= (cull_mode == GL_FRONT) ^ (front_face == GL_CCW) ?
 226                                 NV04_TEXTURED_TRIANGLE_CONTROL_CULL_MODE_CW :
 227                                 NV04_TEXTURED_TRIANGLE_CONTROL_CULL_MODE_CCW;
 228
 229                 /* Depth test. */
 230                 if (ctx->Depth.Test)
 231                         ctrl |= NV04_TEXTURED_TRIANGLE_CONTROL_Z_ENABLE;
 232                 if (ctx->Depth.Mask)
 233                         ctrl |= NV04_TEXTURED_TRIANGLE_CONTROL_Z_WRITE;
 234
 235                 ctrl |= get_comparison_op(ctx->Depth.Func) << 16;
 236
 237                 /* Alpha test. */
 238                 if (ctx->Color.AlphaEnabled)
 239                         ctrl |= NV04_TEXTURED_TRIANGLE_CONTROL_ALPHA_ENABLE;
 240
 241                 ctrl |= get_comparison_op(ctx->Color.AlphaFunc) << 8 |
 242                         FLOAT_TO_UBYTE(ctx->Color.AlphaRef);
 243
 244                 BEGIN_RING(chan, fahrenheit, NV04_TEXTURED_TRIANGLE_CONTROL, 1);
 245                 OUT_RING(chan, ctrl);
 246         }
 247 }
 248
 249 void
 250 nv04_defer_blend(GLcontext *ctx, int emit)
 251 {
 252         context_dirty(ctx, BLEND);
 253 }
 254
 255 void
 256 nv04_emit_blend(GLcontext *ctx, int emit)
 257 {
 258         struct nouveau_channel *chan = context_chan(ctx);
 259         struct nouveau_grobj *fahrenheit = nv04_context_engine(ctx);
 260
 261         if (nv04_mtex_engine(fahrenheit)) {
 262                 uint32_t blend = 0x2 << 4 |
 263                         NV04_MULTITEX_TRIANGLE_BLEND_TEXTURE_PERSPECTIVE_ENABLE;
 264
 265                 /* Alpha blending. */
 266                 blend |= get_blend_func(ctx->Color.BlendDstRGB) << 28 |
 267                         get_blend_func(ctx->Color.BlendSrcRGB) << 24;
 268
 269                 if (ctx->Color.BlendEnabled)
 270                         blend |= NV04_MULTITEX_TRIANGLE_BLEND_BLEND_ENABLE;
 271
 272                 /* Shade model. */
 273                 if (ctx->Light.ShadeModel == GL_SMOOTH)
 274                         blend |= NV04_MULTITEX_TRIANGLE_BLEND_SHADE_MODE_GOURAUD;
 275                 else
 276                         blend |= NV04_MULTITEX_TRIANGLE_BLEND_SHADE_MODE_FLAT;
 277
 278                 /* Secondary color */
 279                 if (NEED_SECONDARY_COLOR(ctx))
 280                         blend |= NV04_MULTITEX_TRIANGLE_BLEND_SPECULAR_ENABLE;
 281
 282                 /* Fog. */
 283                 if (ctx->Fog.Enabled)
 284                         blend |= NV04_MULTITEX_TRIANGLE_BLEND_FOG_ENABLE;
 285
 286                 BEGIN_RING(chan, fahrenheit, NV04_MULTITEX_TRIANGLE_BLEND, 1);
 287                 OUT_RING(chan, blend);
 288
 289                 BEGIN_RING(chan, fahrenheit, NV04_MULTITEX_TRIANGLE_FOGCOLOR, 1);
 290                 OUT_RING(chan, pack_rgba_f(MESA_FORMAT_ARGB8888,
 291                                            ctx->Fog.Color));
 292
 293         } else {
 294                 uint32_t blend = 0x2 << 4 |
 295                         NV04_TEXTURED_TRIANGLE_BLEND_TEXTURE_PERSPECTIVE_ENABLE;
 296
 297                 /* Alpha blending. */
 298                 blend |= get_blend_func(ctx->Color.BlendDstRGB) << 28 |
 299                         get_blend_func(ctx->Color.BlendSrcRGB) << 24;
 300
 301                 if (ctx->Color.BlendEnabled)
 302                         blend |= NV04_TEXTURED_TRIANGLE_BLEND_BLEND_ENABLE;
 303
 304                 /* Shade model. */
 305                 if (ctx->Light.ShadeModel == GL_SMOOTH)
 306                         blend |= NV04_TEXTURED_TRIANGLE_BLEND_SHADE_MODE_GOURAUD;
 307                 else
 308                         blend |= NV04_TEXTURED_TRIANGLE_BLEND_SHADE_MODE_FLAT;
 309
 310                 /* Texture environment. */
 311                 if (ctx->Texture._EnabledUnits)
 312                         blend |= get_texenv_mode(ctx->Texture.Unit[0].EnvMode);
 313                 else
 314                         blend |= get_texenv_mode(GL_MODULATE);
 315
 316                 /* Secondary color */
 317                 if (NEED_SECONDARY_COLOR(ctx))
 318                         blend |= NV04_TEXTURED_TRIANGLE_BLEND_SPECULAR_ENABLE;
 319
 320                 /* Fog. */
 321                 if (ctx->Fog.Enabled)
 322                         blend |= NV04_TEXTURED_TRIANGLE_BLEND_FOG_ENABLE;
 323
 324                 BEGIN_RING(chan, fahrenheit, NV04_TEXTURED_TRIANGLE_BLEND, 1);
 325                 OUT_RING(chan, blend);
 326
 327                 BEGIN_RING(chan, fahrenheit, NV04_TEXTURED_TRIANGLE_FOGCOLOR, 1);
 328                 OUT_RING(chan, pack_rgba_f(MESA_FORMAT_ARGB8888,
 329                                            ctx->Fog.Color));
 330         }
 331 }