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