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 "nv_object.xml.h"
  31 #include "nv04_3d.xml.h"
  32 #include "nv04_driver.h"
  33
  34 static unsigned
  35 get_comparison_op(unsigned op)
  36 {
  37         switch (op) {
  38         case GL_NEVER:
  39                 return 0x1;
  40         case GL_LESS:
  41                 return 0x2;
  42         case GL_EQUAL:
  43                 return 0x3;
  44         case GL_LEQUAL:
  45                 return 0x4;
  46         case GL_GREATER:
  47                 return 0x5;
  48         case GL_NOTEQUAL:
  49                 return 0x6;
  50         case GL_GEQUAL:
  51                 return 0x7;
  52         case GL_ALWAYS:
  53                 return 0x8;
  54         default:
  55                 assert(0);
  56         }
  57 }
  58
  59 static unsigned
  60 get_stencil_op(unsigned op)
  61 {
  62         switch (op) {
  63         case GL_KEEP:
  64                 return 0x1;
  65         case GL_ZERO:
  66                 return 0x2;
  67         case GL_REPLACE:
  68                 return 0x3;
  69         case GL_INCR:
  70                 return 0x4;
  71         case GL_DECR:
  72                 return 0x5;
  73         case GL_INVERT:
  74                 return 0x6;
  75         case GL_INCR_WRAP:
  76                 return 0x7;
  77         case GL_DECR_WRAP:
  78                 return 0x8;
  79         default:
  80                 assert(0);
  81         }
  82 }
  83
  84 static unsigned
  85 get_blend_func(unsigned func)
  86 {
  87         switch (func) {
  88         case GL_ZERO:
  89                 return 0x1;
  90         case GL_ONE:
  91                 return 0x2;
  92         case GL_SRC_COLOR:
  93                 return 0x3;
  94         case GL_ONE_MINUS_SRC_COLOR:
  95                 return 0x4;
  96         case GL_SRC_ALPHA:
  97                 return 0x5;
  98         case GL_ONE_MINUS_SRC_ALPHA:
  99                 return 0x6;
 100         case GL_DST_ALPHA:
 101                 return 0x7;
 102         case GL_ONE_MINUS_DST_ALPHA:
 103                 return 0x8;
 104         case GL_DST_COLOR:
 105                 return 0x9;
 106         case GL_ONE_MINUS_DST_COLOR:
 107                 return 0xa;
 108         case GL_SRC_ALPHA_SATURATE:
 109                 return 0xb;
 110         default:
 111                 assert(0);
 112         }
 113 }
 114
 115 void
 116 nv04_defer_control(struct gl_context *ctx, int emit)
 117 {
 118         context_dirty(ctx, CONTROL);
 119 }
 120
 121 void
 122 nv04_emit_control(struct gl_context *ctx, int emit)
 123 {
 124         struct nv04_context *nv04 = to_nv04_context(ctx);
 125         int cull = ctx->Polygon.CullFaceMode;
 126         int front = ctx->Polygon.FrontFace;
 127
 128         nv04->ctrl[0] = NV04_TEXTURED_TRIANGLE_CONTROL_Z_FORMAT_FIXED |
 129                         NV04_TEXTURED_TRIANGLE_CONTROL_ORIGIN_CORNER;
 130         nv04->ctrl[1] = 0;
 131         nv04->ctrl[2] = 0;
 132
 133         /* Dithering. */
 134         if (ctx->Color.DitherFlag)
 135                 nv04->ctrl[0] |= NV04_TEXTURED_TRIANGLE_CONTROL_DITHER_ENABLE;
 136
 137         /* Cull mode. */
 138         if (!ctx->Polygon.CullFlag)
 139                 nv04->ctrl[0] |= NV04_TEXTURED_TRIANGLE_CONTROL_CULL_MODE_NONE;
 140         else if (cull == GL_FRONT_AND_BACK)
 141                 nv04->ctrl[0] |= NV04_TEXTURED_TRIANGLE_CONTROL_CULL_MODE_BOTH;
 142         else
 143                 nv04->ctrl[0] |= (cull == GL_FRONT) ^ (front == GL_CCW) ?
 144                                  NV04_TEXTURED_TRIANGLE_CONTROL_CULL_MODE_CW :
 145                                  NV04_TEXTURED_TRIANGLE_CONTROL_CULL_MODE_CCW;
 146
 147         /* Depth test. */
 148         if (ctx->Depth.Test)
 149                 nv04->ctrl[0] |= NV04_TEXTURED_TRIANGLE_CONTROL_Z_ENABLE;
 150         if (ctx->Depth.Mask)
 151                 nv04->ctrl[0] |= NV04_TEXTURED_TRIANGLE_CONTROL_Z_WRITE;
 152
 153         nv04->ctrl[0] |= get_comparison_op(ctx->Depth.Func) << 16;
 154
 155         /* Alpha test. */
 156         if (ctx->Color.AlphaEnabled)
 157                 nv04->ctrl[0] |= NV04_TEXTURED_TRIANGLE_CONTROL_ALPHA_ENABLE;
 158
 159         nv04->ctrl[0] |= get_comparison_op(ctx->Color.AlphaFunc) << 8 |
 160                          FLOAT_TO_UBYTE(ctx->Color.AlphaRef);
 161
 162         /* Color mask. */
 163         if (ctx->Color.ColorMask[0][RCOMP])
 164                 nv04->ctrl[0] |= NV04_MULTITEX_TRIANGLE_CONTROL0_RED_WRITE;
 165         if (ctx->Color.ColorMask[0][GCOMP])
 166                 nv04->ctrl[0] |= NV04_MULTITEX_TRIANGLE_CONTROL0_GREEN_WRITE;
 167         if (ctx->Color.ColorMask[0][BCOMP])
 168                 nv04->ctrl[0] |= NV04_MULTITEX_TRIANGLE_CONTROL0_BLUE_WRITE;
 169         if (ctx->Color.ColorMask[0][ACOMP])
 170                 nv04->ctrl[0] |= NV04_MULTITEX_TRIANGLE_CONTROL0_ALPHA_WRITE;
 171
 172         /* Stencil test. */
 173         if (ctx->Stencil.WriteMask[0])
 174                 nv04->ctrl[0] |= NV04_MULTITEX_TRIANGLE_CONTROL0_STENCIL_WRITE;
 175
 176         if (ctx->Stencil.Enabled)
 177                 nv04->ctrl[1] |= NV04_MULTITEX_TRIANGLE_CONTROL1_STENCIL_ENABLE;
 178
 179         nv04->ctrl[1] |= get_comparison_op(ctx->Stencil.Function[0]) << 4 |
 180                          ctx->Stencil.Ref[0] << 8 |
 181                          ctx->Stencil.ValueMask[0] << 16 |
 182                          ctx->Stencil.WriteMask[0] << 24;
 183
 184         nv04->ctrl[2] |= get_stencil_op(ctx->Stencil.ZPassFunc[0]) << 8 |
 185                          get_stencil_op(ctx->Stencil.ZFailFunc[0]) << 4 |
 186                          get_stencil_op(ctx->Stencil.FailFunc[0]);
 187 }
 188
 189 void
 190 nv04_defer_blend(struct gl_context *ctx, int emit)
 191 {
 192         context_dirty(ctx, BLEND);
 193 }
 194
 195 void
 196 nv04_emit_blend(struct gl_context *ctx, int emit)
 197 {
 198         struct nv04_context *nv04 = to_nv04_context(ctx);
 199
 200         nv04->blend &= NV04_TEXTURED_TRIANGLE_BLEND_TEXTURE_MAP__MASK;
 201         nv04->blend |= NV04_TEXTURED_TRIANGLE_BLEND_MASK_BIT_MSB |
 202                        NV04_TEXTURED_TRIANGLE_BLEND_TEXTURE_PERSPECTIVE_ENABLE;
 203
 204         /* Alpha blending. */
 205         nv04->blend |= get_blend_func(ctx->Color.Blend[0].DstRGB) << 28 |
 206                        get_blend_func(ctx->Color.Blend[0].SrcRGB) << 24;
 207
 208         if (ctx->Color.BlendEnabled)
 209                 nv04->blend |= NV04_TEXTURED_TRIANGLE_BLEND_BLEND_ENABLE;
 210
 211         /* Shade model. */
 212         if (ctx->Light.ShadeModel == GL_SMOOTH)
 213                 nv04->blend |= NV04_TEXTURED_TRIANGLE_BLEND_SHADE_MODE_GOURAUD;
 214         else
 215                 nv04->blend |= NV04_TEXTURED_TRIANGLE_BLEND_SHADE_MODE_FLAT;
 216
 217         /* Secondary color */
 218         if (_mesa_need_secondary_color(ctx))
 219                 nv04->blend |= NV04_TEXTURED_TRIANGLE_BLEND_SPECULAR_ENABLE;
 220
 221         /* Fog. */
 222         if (ctx->Fog.Enabled) {
 223                 nv04->blend |= NV04_TEXTURED_TRIANGLE_BLEND_FOG_ENABLE;
 224                 nv04->fog = pack_rgba_f(MESA_FORMAT_ARGB8888, ctx->Fog.Color);
 225         }
 226 }