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