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 #include "main/stencil.h"
  34
  35 static unsigned
  36 get_comparison_op(unsigned op)
  37 {
  38         switch (op) {
  39         case GL_NEVER:
  40                 return 0x1;
  41         case GL_LESS:
  42                 return 0x2;
  43         case GL_EQUAL:
  44                 return 0x3;
  45         case GL_LEQUAL:
  46                 return 0x4;
  47         case GL_GREATER:
  48                 return 0x5;
  49         case GL_NOTEQUAL:
  50                 return 0x6;
  51         case GL_GEQUAL:
  52                 return 0x7;
  53         case GL_ALWAYS:
  54                 return 0x8;
  55         default:
  56                 assert(0);
  57         }
  58 }
  59
  60 static unsigned
  61 get_stencil_op(unsigned op)
  62 {
  63         switch (op) {
  64         case GL_KEEP:
  65                 return 0x1;
  66         case GL_ZERO:
  67                 return 0x2;
  68         case GL_REPLACE:
  69                 return 0x3;
  70         case GL_INCR:
  71                 return 0x4;
  72         case GL_DECR:
  73                 return 0x5;
  74         case GL_INVERT:
  75                 return 0x6;
  76         case GL_INCR_WRAP:
  77                 return 0x7;
  78         case GL_DECR_WRAP:
  79                 return 0x8;
  80         default:
  81                 assert(0);
  82         }
  83 }
  84
  85 static unsigned
  86 get_blend_func(unsigned func)
  87 {
  88         switch (func) {
  89         case GL_ZERO:
  90                 return 0x1;
  91         case GL_ONE:
  92                 return 0x2;
  93         case GL_SRC_COLOR:
  94                 return 0x3;
  95         case GL_ONE_MINUS_SRC_COLOR:
  96                 return 0x4;
  97         case GL_SRC_ALPHA:
  98                 return 0x5;
  99         case GL_ONE_MINUS_SRC_ALPHA:
 100                 return 0x6;
 101         case GL_DST_ALPHA:
 102                 return 0x7;
 103         case GL_ONE_MINUS_DST_ALPHA:
 104                 return 0x8;
 105         case GL_DST_COLOR:
 106                 return 0x9;
 107         case GL_ONE_MINUS_DST_COLOR:
 108                 return 0xa;
 109         case GL_SRC_ALPHA_SATURATE:
 110                 return 0xb;
 111         default:
 112                 assert(0);
 113         }
 114 }
 115
 116 void
 117 nv04_defer_control(struct gl_context *ctx, int emit)
 118 {
 119         context_dirty(ctx, CONTROL);
 120 }
 121
 122 void
 123 nv04_emit_control(struct gl_context *ctx, int emit)
 124 {
 125         struct nv04_context *nv04 = to_nv04_context(ctx);
 126         int cull = ctx->Polygon.CullFaceMode;
 127         int front = ctx->Polygon.FrontFace;
 128
 129         nv04->ctrl[0] = NV04_TEXTURED_TRIANGLE_CONTROL_Z_FORMAT_FIXED |
 130                         NV04_TEXTURED_TRIANGLE_CONTROL_ORIGIN_CORNER;
 131         nv04->ctrl[1] = 0;
 132         nv04->ctrl[2] = 0;
 133
 134         /* Dithering. */
 135         if (ctx->Color.DitherFlag)
 136                 nv04->ctrl[0] |= NV04_TEXTURED_TRIANGLE_CONTROL_DITHER_ENABLE;
 137
 138         /* Cull mode. */
 139         if (!ctx->Polygon.CullFlag)
 140                 nv04->ctrl[0] |= NV04_TEXTURED_TRIANGLE_CONTROL_CULL_MODE_NONE;
 141         else if (cull == GL_FRONT_AND_BACK)
 142                 nv04->ctrl[0] |= NV04_TEXTURED_TRIANGLE_CONTROL_CULL_MODE_BOTH;
 143         else
 144                 nv04->ctrl[0] |= (cull == GL_FRONT) ^ (front == GL_CCW) ?
 145                                  NV04_TEXTURED_TRIANGLE_CONTROL_CULL_MODE_CW :
 146                                  NV04_TEXTURED_TRIANGLE_CONTROL_CULL_MODE_CCW;
 147
 148         /* Depth test. */
 149         if (ctx->Depth.Test)
 150                 nv04->ctrl[0] |= NV04_TEXTURED_TRIANGLE_CONTROL_Z_ENABLE;
 151         if (ctx->Depth.Mask)
 152                 nv04->ctrl[0] |= NV04_TEXTURED_TRIANGLE_CONTROL_Z_WRITE;
 153
 154         nv04->ctrl[0] |= get_comparison_op(ctx->Depth.Func) << 16;
 155
 156         /* Alpha test. */
 157         if (ctx->Color.AlphaEnabled)
 158                 nv04->ctrl[0] |= NV04_TEXTURED_TRIANGLE_CONTROL_ALPHA_ENABLE;
 159
 160         nv04->ctrl[0] |= get_comparison_op(ctx->Color.AlphaFunc) << 8 |
 161                          FLOAT_TO_UBYTE(ctx->Color.AlphaRef);
 162
 163         /* Color mask. */
 164         if (ctx->Color.ColorMask[0][RCOMP])
 165                 nv04->ctrl[0] |= NV04_MULTITEX_TRIANGLE_CONTROL0_RED_WRITE;
 166         if (ctx->Color.ColorMask[0][GCOMP])
 167                 nv04->ctrl[0] |= NV04_MULTITEX_TRIANGLE_CONTROL0_GREEN_WRITE;
 168         if (ctx->Color.ColorMask[0][BCOMP])
 169                 nv04->ctrl[0] |= NV04_MULTITEX_TRIANGLE_CONTROL0_BLUE_WRITE;
 170         if (ctx->Color.ColorMask[0][ACOMP])
 171                 nv04->ctrl[0] |= NV04_MULTITEX_TRIANGLE_CONTROL0_ALPHA_WRITE;
 172
 173         /* Stencil test. */
 174         if (ctx->Stencil.WriteMask[0])
 175                 nv04->ctrl[0] |= NV04_MULTITEX_TRIANGLE_CONTROL0_STENCIL_WRITE;
 176
 177         if (ctx->Stencil.Enabled)
 178                 nv04->ctrl[1] |= NV04_MULTITEX_TRIANGLE_CONTROL1_STENCIL_ENABLE;
 179
 180         nv04->ctrl[1] |= get_comparison_op(ctx->Stencil.Function[0]) << 4 |
 181                          _mesa_get_stencil_ref(ctx, 0) << 8 |
 182                          ctx->Stencil.ValueMask[0] << 16 |
 183                          ctx->Stencil.WriteMask[0] << 24;
 184
 185         nv04->ctrl[2] |= get_stencil_op(ctx->Stencil.ZPassFunc[0]) << 8 |
 186                          get_stencil_op(ctx->Stencil.ZFailFunc[0]) << 4 |
 187                          get_stencil_op(ctx->Stencil.FailFunc[0]);
 188 }
 189
 190 void
 191 nv04_defer_blend(struct gl_context *ctx, int emit)
 192 {
 193         context_dirty(ctx, BLEND);
 194 }
 195
 196 void
 197 nv04_emit_blend(struct gl_context *ctx, int emit)
 198 {
 199         struct nv04_context *nv04 = to_nv04_context(ctx);
 200
 201         nv04->blend &= NV04_TEXTURED_TRIANGLE_BLEND_TEXTURE_MAP__MASK;
 202         nv04->blend |= NV04_TEXTURED_TRIANGLE_BLEND_MASK_BIT_MSB |
 203                        NV04_TEXTURED_TRIANGLE_BLEND_TEXTURE_PERSPECTIVE_ENABLE;
 204
 205         /* Alpha blending. */
 206         nv04->blend |= get_blend_func(ctx->Color.Blend[0].DstRGB) << 28 |
 207                        get_blend_func(ctx->Color.Blend[0].SrcRGB) << 24;
 208
 209         if (ctx->Color.BlendEnabled)
 210                 nv04->blend |= NV04_TEXTURED_TRIANGLE_BLEND_BLEND_ENABLE;
 211
 212         /* Shade model. */
 213         if (ctx->Light.ShadeModel == GL_SMOOTH)
 214                 nv04->blend |= NV04_TEXTURED_TRIANGLE_BLEND_SHADE_MODE_GOURAUD;
 215         else
 216                 nv04->blend |= NV04_TEXTURED_TRIANGLE_BLEND_SHADE_MODE_FLAT;
 217
 218         /* Secondary color */
 219         if (_mesa_need_secondary_color(ctx))
 220                 nv04->blend |= NV04_TEXTURED_TRIANGLE_BLEND_SPECULAR_ENABLE;
 221
 222         /* Fog. */
 223         if (ctx->Fog.Enabled) {
 224                 nv04->blend |= NV04_TEXTURED_TRIANGLE_BLEND_FOG_ENABLE;
 225                 nv04->fog = pack_rgba_f(MESA_FORMAT_B8G8R8A8_UNORM, ctx->Fog.Color);
 226         }
 227 }