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 & RADEON_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, const GLfloat color[4])
 180 {
 181         GLubyte c[4];
 182         CLAMPED_FLOAT_TO_UBYTE(c[0], color[0]);
 183         CLAMPED_FLOAT_TO_UBYTE(c[1], color[1]);
 184         CLAMPED_FLOAT_TO_UBYTE(c[2], color[2]);
 185         CLAMPED_FLOAT_TO_UBYTE(c[3], color[3]);
 186         t->pp_border_color = PACK_COLOR_8888(c[3], c[0], c[1], c[2]);
 187 }
 188
 189 /**
 190  * Changes variables and flags for a state update, which will happen at the
 191  * next UpdateTextureState
 192  */
 193
 194 static void r300TexParameter(GLcontext * ctx, GLenum target,
 195                              struct gl_texture_object *texObj,
 196                              GLenum pname, const GLfloat * params)
 197 {
 198         radeonTexObj* t = radeon_tex_obj(texObj);
 199
 200         if (RADEON_DEBUG & (RADEON_STATE | RADEON_TEXTURE)) {
 201                 fprintf(stderr, "%s( %s )\n", __FUNCTION__,
 202                         _mesa_lookup_enum_by_nr(pname));
 203         }
 204
 205         switch (pname) {
 206         case GL_TEXTURE_MIN_FILTER:
 207         case GL_TEXTURE_MAG_FILTER:
 208         case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 209                 r300SetTexFilter(t, texObj->MinFilter, texObj->MagFilter, texObj->MaxAnisotropy);
 210                 break;
 211
 212         case GL_TEXTURE_WRAP_S:
 213         case GL_TEXTURE_WRAP_T:
 214         case GL_TEXTURE_WRAP_R:
 215                 r300UpdateTexWrap(t);
 216                 break;
 217
 218         case GL_TEXTURE_BORDER_COLOR:
 219                 r300SetTexBorderColor(t, texObj->BorderColor);
 220                 break;
 221
 222         case GL_TEXTURE_BASE_LEVEL:
 223         case GL_TEXTURE_MAX_LEVEL:
 224         case GL_TEXTURE_MIN_LOD:
 225         case GL_TEXTURE_MAX_LOD:
 226                 /* This isn't the most efficient solution but there doesn't appear to
 227                  * be a nice alternative.  Since there's no LOD clamping,
 228                  * we just have to rely on loading the right subset of mipmap levels
 229                  * to simulate a clamped LOD.
 230                  */
 231                 if (t->mt) {
 232                         radeon_miptree_unreference(t->mt);
 233                         t->mt = 0;
 234                         t->validated = GL_FALSE;
 235                 }
 236                 break;
 237
 238         case GL_DEPTH_TEXTURE_MODE:
 239                 if (!texObj->Image[0][texObj->BaseLevel])
 240                         return;
 241                 if (texObj->Image[0][texObj->BaseLevel]->TexFormat->BaseFormat
 242                     == GL_DEPTH_COMPONENT) {
 243                         r300SetDepthTexMode(texObj);
 244                         break;
 245                 } else {
 246                         /* If the texture isn't a depth texture, changing this
 247                          * state won't cause any changes to the hardware.
 248                          * Don't force a flush of texture state.
 249                          */
 250                         return;
 251                 }
 252
 253         default:
 254                 return;
 255         }
 256 }
 257
 258 static void r300DeleteTexture(GLcontext * ctx, struct gl_texture_object *texObj)
 259 {
 260         r300ContextPtr rmesa = R300_CONTEXT(ctx);
 261         radeonTexObj* t = radeon_tex_obj(texObj);
 262
 263         if (RADEON_DEBUG & (RADEON_STATE | RADEON_TEXTURE)) {
 264                 fprintf(stderr, "%s( %p (target = %s) )\n", __FUNCTION__,
 265                         (void *)texObj,
 266                         _mesa_lookup_enum_by_nr(texObj->Target));
 267         }
 268
 269         if (rmesa) {
 270                 int i;
 271                 radeon_firevertices(&rmesa->radeon);
 272
 273                 for(i = 0; i < R300_MAX_TEXTURE_UNITS; ++i)
 274                         if (rmesa->hw.textures[i] == t)
 275                                 rmesa->hw.textures[i] = 0;
 276         }
 277
 278         if (t->bo) {
 279                 radeon_bo_unref(t->bo);
 280                 t->bo = NULL;
 281         }
 282
 283         if (t->mt) {
 284                 radeon_miptree_unreference(t->mt);
 285                 t->mt = 0;
 286         }
 287         _mesa_delete_texture_object(ctx, texObj);
 288 }
 289
 290 /**
 291  * Allocate a new texture object.
 292  * Called via ctx->Driver.NewTextureObject.
 293  * Note: this function will be called during context creation to
 294  * allocate the default texture objects.
 295  * Fixup MaxAnisotropy according to user preference.
 296  */
 297 static struct gl_texture_object *r300NewTextureObject(GLcontext * ctx,
 298                                                       GLuint name,
 299                                                       GLenum target)
 300 {
 301         r300ContextPtr rmesa = R300_CONTEXT(ctx);
 302         radeonTexObj* t = CALLOC_STRUCT(radeon_tex_obj);
 303
 304
 305         if (RADEON_DEBUG & (RADEON_STATE | RADEON_TEXTURE)) {
 306                 fprintf(stderr, "%s( %p (target = %s) )\n", __FUNCTION__,
 307                         t, _mesa_lookup_enum_by_nr(target));
 308         }
 309
 310         _mesa_initialize_texture_object(&t->base, name, target);
 311         t->base.MaxAnisotropy = rmesa->radeon.initialMaxAnisotropy;
 312
 313         /* Initialize hardware state */
 314         r300UpdateTexWrap(t);
 315         r300SetTexFilter(t, t->base.MinFilter, t->base.MagFilter, t->base.MaxAnisotropy);
 316         r300SetTexBorderColor(t, t->base.BorderColor);
 317
 318         return &t->base;
 319 }
 320
 321 void r300InitTextureFuncs(struct dd_function_table *functions)
 322 {
 323         /* Note: we only plug in the functions we implement in the driver
 324          * since _mesa_init_driver_functions() was already called.
 325          */
 326         functions->NewTextureImage = radeonNewTextureImage;
 327         functions->FreeTexImageData = radeonFreeTexImageData;
 328         functions->MapTexture = radeonMapTexture;
 329         functions->UnmapTexture = radeonUnmapTexture;
 330
 331         functions->ChooseTextureFormat = radeonChooseTextureFormat_mesa;
 332         functions->TexImage1D = radeonTexImage1D;
 333         functions->TexImage2D = radeonTexImage2D;
 334         functions->TexImage3D = radeonTexImage3D;
 335         functions->TexSubImage1D = radeonTexSubImage1D;
 336         functions->TexSubImage2D = radeonTexSubImage2D;
 337         functions->TexSubImage3D = radeonTexSubImage3D;
 338         functions->GetTexImage = radeonGetTexImage;
 339         functions->GetCompressedTexImage = radeonGetCompressedTexImage;
 340         functions->NewTextureObject = r300NewTextureObject;
 341         functions->DeleteTexture = r300DeleteTexture;
 342         functions->IsTextureResident = driIsTextureResident;
 343
 344         functions->TexParameter = r300TexParameter;
 345
 346         functions->CompressedTexImage2D = radeonCompressedTexImage2D;
 347         functions->CompressedTexSubImage2D = radeonCompressedTexSubImage2D;
 348
 349         functions->GenerateMipmap = radeonGenerateMipmap;
 350
 351         driInitTextureFormats();
 352 }