src/mesa/drivers/dri/nouveau/nv04_state_tex.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_texture.h"
  30 #include "nouveau_util.h"
  31 #include "nouveau_gldefs.h"
  32 #include "nv_object.xml.h"
  33 #include "nv04_3d.xml.h"
  34 #include "nv04_driver.h"
  35 #include "main/samplerobj.h"
  36
  37 static uint32_t
  38 get_tex_format(struct gl_texture_image *ti)
  39 {
  40         switch (ti->TexFormat) {
  41         case MESA_FORMAT_A_UNORM8:
  42         case MESA_FORMAT_L_UNORM8:
  43         case MESA_FORMAT_I_UNORM8:
  44                 return NV04_TEXTURED_TRIANGLE_FORMAT_COLOR_Y8;
  45         case MESA_FORMAT_B5G5R5A1_UNORM:
  46                 return NV04_TEXTURED_TRIANGLE_FORMAT_COLOR_A1R5G5B5;
  47         case MESA_FORMAT_B4G4R4A4_UNORM:
  48                 return NV04_TEXTURED_TRIANGLE_FORMAT_COLOR_A4R4G4B4;
  49         case MESA_FORMAT_B5G6R5_UNORM:
  50                 return NV04_TEXTURED_TRIANGLE_FORMAT_COLOR_R5G6B5;
  51         case MESA_FORMAT_B8G8R8A8_UNORM:
  52                 return NV04_TEXTURED_TRIANGLE_FORMAT_COLOR_A8R8G8B8;
  53         case MESA_FORMAT_B8G8R8X8_UNORM:
  54                 return NV04_TEXTURED_TRIANGLE_FORMAT_COLOR_X8R8G8B8;
  55         default:
  56                 assert(0);
  57         }
  58 }
  59
  60 void
  61 nv04_emit_tex_obj(struct gl_context *ctx, int emit)
  62 {
  63         struct nv04_context *nv04 = to_nv04_context(ctx);
  64         const int i = emit - NOUVEAU_STATE_TEX_OBJ0;
  65         struct nouveau_surface *s;
  66         uint32_t format = 0xa0, filter = 0x1010;
  67
  68         if (ctx->Texture.Unit[i]._Current) {
  69                 struct gl_texture_object *t = ctx->Texture.Unit[i]._Current;
  70                 struct gl_texture_image *ti = t->Image[0][t->BaseLevel];
  71                 const struct gl_sampler_object *sa = _mesa_get_samplerobj(ctx, i);
  72                 int lod_max = 1, lod_bias = 0;
  73
  74                 if (!nouveau_texture_validate(ctx, t))
  75                         return;
  76
  77                 s = &to_nouveau_texture(t)->surfaces[t->BaseLevel];
  78
  79                 if (sa->MinFilter != GL_NEAREST &&
  80                     sa->MinFilter != GL_LINEAR) {
  81                         lod_max = CLAMP(MIN2(sa->MaxLod, t->_MaxLambda),
  82                                         0, 15) + 1;
  83
  84                         lod_bias = CLAMP(ctx->Texture.Unit[i].LodBias +
  85                                          sa->LodBias, -16, 15) * 8;
  86                 }
  87
  88                 format |= nvgl_wrap_mode(sa->WrapT) << 28 |
  89                         nvgl_wrap_mode(sa->WrapS) << 24 |
  90                         ti->HeightLog2 << 20 |
  91                         ti->WidthLog2 << 16 |
  92                         lod_max << 12 |
  93                         get_tex_format(ti);
  94
  95                 filter |= log2i(sa->MaxAnisotropy) << 31 |
  96                         nvgl_filter_mode(sa->MagFilter) << 28 |
  97                         log2i(sa->MaxAnisotropy) << 27 |
  98                         nvgl_filter_mode(sa->MinFilter) << 24 |
  99                         (lod_bias & 0xff) << 16;
 100
 101         } else {
 102                 s = &to_nv04_context(ctx)->dummy_texture;
 103
 104                 format |= NV04_TEXTURED_TRIANGLE_FORMAT_ADDRESSU_REPEAT |
 105                         NV04_TEXTURED_TRIANGLE_FORMAT_ADDRESSV_REPEAT |
 106                         1 << 12 |
 107                         NV04_TEXTURED_TRIANGLE_FORMAT_COLOR_A8R8G8B8;
 108
 109                 filter |= NV04_TEXTURED_TRIANGLE_FILTER_MINIFY_NEAREST |
 110                         NV04_TEXTURED_TRIANGLE_FILTER_MAGNIFY_NEAREST;
 111         }
 112
 113         nv04->texture[i] = s;
 114         nv04->format[i] = format;
 115         nv04->filter[i] = filter;
 116 }