src/mesa/drivers/dri/r300/r300_tex.c

   1 /*
   2 Copyright (C) The Weather Channel, Inc.  2002.  All Rights Reserved.
   3
   4 The Weather Channel (TM) funded Tungsten Graphics to develop the
   5 initial release of the Radeon 8500 driver under the XFree86 license.
   6 This notice must be preserved.
   7
   8 Permission is hereby granted, free of charge, to any person obtaining
   9 a copy of this software and associated documentation files (the
  10 "Software"), to deal in the Software without restriction, including
  11 without limitation the rights to use, copy, modify, merge, publish,
  12 distribute, sublicense, and/or sell copies of the Software, and to
  13 permit persons to whom the Software is furnished to do so, subject to
  14 the following conditions:
  15
  16 The above copyright notice and this permission notice (including the
  17 next paragraph) shall be included in all copies or substantial
  18 portions of the Software.
  19
  20 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  23 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  24 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 */
  28
  29 /**
  30  * \file
  31  *
  32  * \author Keith Whitwell <keith@tungstengraphics.com>
  33  */
  34
  35 #include "main/glheader.h"
  36 #include "main/imports.h"
  37 #include "main/colormac.h"
  38 #include "main/context.h"
  39 #include "main/enums.h"
  40 #include "main/image.h"
  41 #include "main/mipmap.h"
  42 #include "main/simple_list.h"
  43 #include "main/texformat.h"
  44 #include "main/texstore.h"
  45 #include "main/teximage.h"
  46 #include "main/texobj.h"
  47
  48 #include "texmem.h"
  49
  50 #include "r300_context.h"
  51 #include "r300_state.h"
  52 #include "r300_ioctl.h"
  53 #include "radeon_mipmap_tree.h"
  54 #include "r300_tex.h"
  55
  56 #include "xmlpool.h"
  57
  58
  59 static unsigned int translate_wrap_mode(GLenum wrapmode)
  60 {
  61         switch(wrapmode) {
  62         case GL_REPEAT: return R300_TX_REPEAT;
  63         case GL_CLAMP: return R300_TX_CLAMP;
  64         case GL_CLAMP_TO_EDGE: return R300_TX_CLAMP_TO_EDGE;
  65         case GL_CLAMP_TO_BORDER: return R300_TX_CLAMP_TO_BORDER;
  66         case GL_MIRRORED_REPEAT: return R300_TX_REPEAT | R300_TX_MIRRORED;
  67         case GL_MIRROR_CLAMP_EXT: return R300_TX_CLAMP | R300_TX_MIRRORED;
  68         case GL_MIRROR_CLAMP_TO_EDGE_EXT: return R300_TX_CLAMP_TO_EDGE | R300_TX_MIRRORED;
  69         case GL_MIRROR_CLAMP_TO_BORDER_EXT: return R300_TX_CLAMP_TO_BORDER | R300_TX_MIRRORED;
  70         default:
  71                 _mesa_problem(NULL, "bad wrap mode in %s", __FUNCTION__);
  72                 return 0;
  73         }
  74 }
  75
  76
  77 /**
  78  * Update the cached hardware registers based on the current texture wrap modes.
  79  *
  80  * \param t Texture object whose wrap modes are to be set
  81  */
  82 static void r300UpdateTexWrap(radeonTexObjPtr t)
  83 {
  84         struct gl_texture_object *tObj = &t->base;
  85
  86         t->pp_txfilter &=
  87             ~(R300_TX_WRAP_S_MASK | R300_TX_WRAP_T_MASK | R300_TX_WRAP_R_MASK);
  88
  89         t->pp_txfilter |= translate_wrap_mode(tObj->WrapS) << R300_TX_WRAP_S_SHIFT;
  90
  91         if (tObj->Target != GL_TEXTURE_1D) {
  92                 t->pp_txfilter |= translate_wrap_mode(tObj->WrapT) << R300_TX_WRAP_T_SHIFT;
  93
  94                 if (tObj->Target == GL_TEXTURE_3D)
  95                         t->pp_txfilter |= translate_wrap_mode(tObj->WrapR) << R300_TX_WRAP_R_SHIFT;
  96         }
  97 }
  98
  99 static GLuint aniso_filter(GLfloat anisotropy)
 100 {
 101         if (anisotropy >= 16.0) {
 102                 return R300_TX_MAX_ANISO_16_TO_1;
 103         } else if (anisotropy >= 8.0) {
 104                 return R300_TX_MAX_ANISO_8_TO_1;
 105         } else if (anisotropy >= 4.0) {
 106                 return R300_TX_MAX_ANISO_4_TO_1;
 107         } else if (anisotropy >= 2.0) {
 108                 return R300_TX_MAX_ANISO_2_TO_1;
 109         } else {
 110                 return R300_TX_MAX_ANISO_1_TO_1;
 111         }
 112 }
 113
 114 /**
 115  * Set the texture magnification and minification modes.
 116  *
 117  * \param t Texture whose filter modes are to be set
 118  * \param minf Texture minification mode
 119  * \param magf Texture magnification mode
 120  * \param anisotropy Maximum anisotropy level
 121  */
 122 static void r300SetTexFilter(radeonTexObjPtr t, GLenum minf, GLenum magf, GLfloat anisotropy)
 123 {
 124         /* Force revalidation to account for switches from/to mipmapping. */
 125         t->validated = GL_FALSE;
 126
 127         t->pp_txfilter &= ~(R300_TX_MIN_FILTER_MASK | R300_TX_MIN_FILTER_MIP_MASK | R300_TX_MAG_FILTER_MASK | R300_TX_MAX_ANISO_MASK);
 128         t->pp_txfilter_1 &= ~R300_EDGE_ANISO_EDGE_ONLY;
 129
 130         /* Note that EXT_texture_filter_anisotropic is extremely vague about
 131          * how anisotropic filtering interacts with the "normal" filter modes.
 132          * When anisotropic filtering is enabled, we override min and mag
 133          * filter settings completely. This includes driconf's settings.
 134          */
 135         if (anisotropy >= 2.0 && (minf != GL_NEAREST) && (magf != GL_NEAREST)) {
 136                 t->pp_txfilter |= R300_TX_MAG_FILTER_ANISO
 137                         | R300_TX_MIN_FILTER_ANISO
 138                         | R300_TX_MIN_FILTER_MIP_LINEAR
 139                         | aniso_filter(anisotropy);
 140                 if (RADEON_DEBUG & DEBUG_TEXTURE)
 141                         fprintf(stderr, "Using maximum anisotropy of %f\n", anisotropy);
 142                 return;
 143         }
 144
 145         switch (minf) {
 146         case GL_NEAREST:
 147                 t->pp_txfilter |= R300_TX_MIN_FILTER_NEAREST;
 148                 break;
 149         case GL_LINEAR:
 150                 t->pp_txfilter |= R300_TX_MIN_FILTER_LINEAR;
 151                 break;
 152         case GL_NEAREST_MIPMAP_NEAREST:
 153                 t->pp_txfilter |= R300_TX_MIN_FILTER_NEAREST|R300_TX_MIN_FILTER_MIP_NEAREST;
 154                 break;
 155         case GL_NEAREST_MIPMAP_LINEAR:
 156                 t->pp_txfilter |= R300_TX_MIN_FILTER_NEAREST|R300_TX_MIN_FILTER_MIP_LINEAR;
 157                 break;
 158         case GL_LINEAR_MIPMAP_NEAREST:
 159                 t->pp_txfilter |= R300_TX_MIN_FILTER_LINEAR|R300_TX_MIN_FILTER_MIP_NEAREST;
 160                 break;
 161         case GL_LINEAR_MIPMAP_LINEAR:
 162                 t->pp_txfilter |= R300_TX_MIN_FILTER_LINEAR|R300_TX_MIN_FILTER_MIP_LINEAR;
 163                 break;
 164         }
 165
 166         /* Note we don't have 3D mipmaps so only use the mag filter setting
 167          * to set the 3D texture filter mode.
 168          */
 169         switch (magf) {
 170         case GL_NEAREST:
 171                 t->pp_txfilter |= R300_TX_MAG_FILTER_NEAREST;
 172                 break;
 173         case GL_LINEAR:
 174                 t->pp_txfilter |= R300_TX_MAG_FILTER_LINEAR;
 175                 break;
 176         }
 177 }
 178
 179 static void r300SetTexBorderColor(radeonTexObjPtr t, GLubyte c[4])
 180 {
 181         t->pp_border_color = PACK_COLOR_8888(c[3], c[0], c[1], c[2]);
 182 }
 183
 184 /**
 185  * Changes variables and flags for a state update, which will happen at the
 186  * next UpdateTextureState
 187  */
 188
 189 static void r300TexParameter(GLcontext * ctx, GLenum target,
 190                              struct gl_texture_object *texObj,
 191                              GLenum pname, const GLfloat * params)
 192 {
 193         radeonTexObj* t = radeon_tex_obj(texObj);
 194
 195         if (RADEON_DEBUG & (DEBUG_STATE | DEBUG_TEXTURE)) {
 196                 fprintf(stderr, "%s( %s )\n", __FUNCTION__,
 197                         _mesa_lookup_enum_by_nr(pname));
 198         }
 199
 200         switch (pname) {
 201         case GL_TEXTURE_MIN_FILTER:
 202         case GL_TEXTURE_MAG_FILTER:
 203         case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 204                 r300SetTexFilter(t, texObj->MinFilter, texObj->MagFilter, texObj->MaxAnisotropy);
 205                 break;
 206
 207         case GL_TEXTURE_WRAP_S:
 208         case GL_TEXTURE_WRAP_T:
 209         case GL_TEXTURE_WRAP_R:
 210                 r300UpdateTexWrap(t);
 211                 break;
 212
 213         case GL_TEXTURE_BORDER_COLOR:
 214                 r300SetTexBorderColor(t, texObj->_BorderChan);
 215                 break;
 216
 217         case GL_TEXTURE_BASE_LEVEL:
 218         case GL_TEXTURE_MAX_LEVEL:
 219         case GL_TEXTURE_MIN_LOD:
 220         case GL_TEXTURE_MAX_LOD:
 221                 /* This isn't the most efficient solution but there doesn't appear to
 222                  * be a nice alternative.  Since there's no LOD clamping,
 223                  * we just have to rely on loading the right subset of mipmap levels
 224                  * to simulate a clamped LOD.
 225                  */
 226                 if (t->mt) {
 227                         radeon_miptree_unreference(t->mt);
 228                         t->mt = 0;
 229                         t->validated = GL_FALSE;
 230                 }
 231                 break;
 232
 233         case GL_DEPTH_TEXTURE_MODE:
 234                 if (!texObj->Image[0][texObj->BaseLevel])
 235                         return;
 236                 if (texObj->Image[0][texObj->BaseLevel]->TexFormat->BaseFormat
 237                     == GL_DEPTH_COMPONENT) {
 238                         r300SetDepthTexMode(texObj);
 239                         break;
 240                 } else {
 241                         /* If the texture isn't a depth texture, changing this
 242                          * state won't cause any changes to the hardware.
 243                          * Don't force a flush of texture state.
 244                          */
 245                         return;
 246                 }
 247
 248         default:
 249                 return;
 250         }
 251 }
 252
 253 static void r300DeleteTexture(GLcontext * ctx, struct gl_texture_object *texObj)
 254 {
 255         r300ContextPtr rmesa = R300_CONTEXT(ctx);
 256         radeonTexObj* t = radeon_tex_obj(texObj);
 257
 258         if (RADEON_DEBUG & (DEBUG_STATE | DEBUG_TEXTURE)) {
 259                 fprintf(stderr, "%s( %p (target = %s) )\n", __FUNCTION__,
 260                         (void *)texObj,
 261                         _mesa_lookup_enum_by_nr(texObj->Target));
 262         }
 263
 264         if (rmesa) {
 265                 int i;
 266                 R300_FIREVERTICES(rmesa);
 267
 268                 for(i = 0; i < R300_MAX_TEXTURE_UNITS; ++i)
 269                         if (rmesa->hw.textures[i] == t)
 270                                 rmesa->hw.textures[i] = 0;
 271         }
 272
 273         if (t->mt) {
 274                 radeon_miptree_unreference(t->mt);
 275                 t->mt = 0;
 276         }
 277         _mesa_delete_texture_object(ctx, texObj);
 278 }
 279
 280 /**
 281  * Allocate a new texture object.
 282  * Called via ctx->Driver.NewTextureObject.
 283  * Note: this function will be called during context creation to
 284  * allocate the default texture objects.
 285  * Fixup MaxAnisotropy according to user preference.
 286  */
 287 static struct gl_texture_object *r300NewTextureObject(GLcontext * ctx,
 288                                                       GLuint name,
 289                                                       GLenum target)
 290 {
 291         r300ContextPtr rmesa = R300_CONTEXT(ctx);
 292         radeonTexObj* t = CALLOC_STRUCT(radeon_tex_obj);
 293
 294
 295         if (RADEON_DEBUG & (DEBUG_STATE | DEBUG_TEXTURE)) {
 296                 fprintf(stderr, "%s( %p (target = %s) )\n", __FUNCTION__,
 297                         t, _mesa_lookup_enum_by_nr(target));
 298         }
 299
 300         _mesa_initialize_texture_object(&t->base, name, target);
 301         t->base.MaxAnisotropy = rmesa->radeon.initialMaxAnisotropy;
 302
 303         /* Initialize hardware state */
 304         r300UpdateTexWrap(t);
 305         r300SetTexFilter(t, t->base.MinFilter, t->base.MagFilter, t->base.MaxAnisotropy);
 306         r300SetTexBorderColor(t, t->base._BorderChan);
 307
 308         return &t->base;
 309 }
 310
 311 void r300InitTextureFuncs(struct dd_function_table *functions)
 312 {
 313         /* Note: we only plug in the functions we implement in the driver
 314          * since _mesa_init_driver_functions() was already called.
 315          */
 316         functions->NewTextureImage = radeonNewTextureImage;
 317         functions->FreeTexImageData = radeonFreeTexImageData;
 318         functions->MapTexture = radeonMapTexture;
 319         functions->UnmapTexture = radeonUnmapTexture;
 320
 321         functions->ChooseTextureFormat = radeonChooseTextureFormat;
 322         functions->TexImage1D = radeonTexImage1D;
 323         functions->TexImage2D = radeonTexImage2D;
 324         functions->TexImage3D = radeonTexImage3D;
 325         functions->TexSubImage1D = radeonTexSubImage1D;
 326         functions->TexSubImage2D = radeonTexSubImage2D;
 327         functions->TexSubImage3D = radeonTexSubImage3D;
 328         functions->NewTextureObject = r300NewTextureObject;
 329         functions->DeleteTexture = r300DeleteTexture;
 330         functions->IsTextureResident = driIsTextureResident;
 331
 332         functions->TexParameter = r300TexParameter;
 333
 334         functions->CompressedTexImage2D = radeonCompressedTexImage2D;
 335         functions->CompressedTexSubImage2D = radeonCompressedTexSubImage2D;
 336
 337         functions->GenerateMipmap = radeonGenerateMipmap;
 338
 339         driInitTextureFormats();
 340 }