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/texstore.h"
  44 #include "main/teximage.h"
  45 #include "main/texobj.h"
  46
  47 #include "texmem.h"
  48
  49 #include "r300_context.h"
  50 #include "r300_state.h"
  51 #include "radeon_mipmap_tree.h"
  52 #include "r300_tex.h"
  53
  54 #include "xmlpool.h"
  55
  56
  57 static unsigned int translate_wrap_mode(GLenum wrapmode)
  58 {
  59         switch(wrapmode) {
  60         case GL_REPEAT: return R300_TX_REPEAT;
  61         case GL_CLAMP: return R300_TX_CLAMP;
  62         case GL_CLAMP_TO_EDGE: return R300_TX_CLAMP_TO_EDGE;
  63         case GL_CLAMP_TO_BORDER: return R300_TX_CLAMP_TO_BORDER;
  64         case GL_MIRRORED_REPEAT: return R300_TX_REPEAT | R300_TX_MIRRORED;
  65         case GL_MIRROR_CLAMP_EXT: return R300_TX_CLAMP | R300_TX_MIRRORED;
  66         case GL_MIRROR_CLAMP_TO_EDGE_EXT: return R300_TX_CLAMP_TO_EDGE | R300_TX_MIRRORED;
  67         case GL_MIRROR_CLAMP_TO_BORDER_EXT: return R300_TX_CLAMP_TO_BORDER | R300_TX_MIRRORED;
  68         default:
  69                 _mesa_problem(NULL, "bad wrap mode in %s", __FUNCTION__);
  70                 return 0;
  71         }
  72 }
  73
  74
  75 /**
  76  * Update the cached hardware registers based on the current texture wrap modes.
  77  *
  78  * \param t Texture object whose wrap modes are to be set
  79  */
  80 static void r300UpdateTexWrap(radeonTexObjPtr t)
  81 {
  82         struct gl_texture_object *tObj = &t->base;
  83
  84         t->pp_txfilter &=
  85             ~(R300_TX_WRAP_S_MASK | R300_TX_WRAP_T_MASK | R300_TX_WRAP_R_MASK);
  86
  87         t->pp_txfilter |= translate_wrap_mode(tObj->WrapS) << R300_TX_WRAP_S_SHIFT;
  88
  89         if (tObj->Target != GL_TEXTURE_1D) {
  90                 t->pp_txfilter |= translate_wrap_mode(tObj->WrapT) << R300_TX_WRAP_T_SHIFT;
  91
  92                 if (tObj->Target == GL_TEXTURE_3D)
  93                         t->pp_txfilter |= translate_wrap_mode(tObj->WrapR) << R300_TX_WRAP_R_SHIFT;
  94         }
  95 }
  96
  97 static GLuint aniso_filter(GLfloat anisotropy)
  98 {
  99         if (anisotropy >= 16.0) {
 100                 return R300_TX_MAX_ANISO_16_TO_1;
 101         } else if (anisotropy >= 8.0) {
 102                 return R300_TX_MAX_ANISO_8_TO_1;
 103         } else if (anisotropy >= 4.0) {
 104                 return R300_TX_MAX_ANISO_4_TO_1;
 105         } else if (anisotropy >= 2.0) {
 106                 return R300_TX_MAX_ANISO_2_TO_1;
 107         } else {
 108                 return R300_TX_MAX_ANISO_1_TO_1;
 109         }
 110 }
 111
 112 /**
 113  * Set the texture magnification and minification modes.
 114  *
 115  * \param t Texture whose filter modes are to be set
 116  * \param minf Texture minification mode
 117  * \param magf Texture magnification mode
 118  * \param anisotropy Maximum anisotropy level
 119  */
 120 static void r300SetTexFilter(radeonTexObjPtr t, GLenum minf, GLenum magf, GLfloat anisotropy)
 121 {
 122         /* Force revalidation to account for switches from/to mipmapping. */
 123         t->validated = GL_FALSE;
 124
 125         t->pp_txfilter &= ~(R300_TX_MIN_FILTER_MASK | R300_TX_MIN_FILTER_MIP_MASK | R300_TX_MAG_FILTER_MASK | R300_TX_MAX_ANISO_MASK);
 126         t->pp_txfilter_1 &= ~R300_EDGE_ANISO_EDGE_ONLY;
 127
 128         /* Note that EXT_texture_filter_anisotropic is extremely vague about
 129          * how anisotropic filtering interacts with the "normal" filter modes.
 130          * When anisotropic filtering is enabled, we override min and mag
 131          * filter settings completely. This includes driconf's settings.
 132          */
 133         if (anisotropy >= 2.0 && (minf != GL_NEAREST) && (magf != GL_NEAREST)) {
 134                 t->pp_txfilter |= R300_TX_MAG_FILTER_ANISO
 135                         | R300_TX_MIN_FILTER_ANISO
 136                         | R300_TX_MIN_FILTER_MIP_LINEAR
 137                         | aniso_filter(anisotropy);
 138                 if (RADEON_DEBUG & RADEON_TEXTURE)
 139                         fprintf(stderr, "Using maximum anisotropy of %f\n", anisotropy);
 140                 return;
 141         }
 142
 143         switch (minf) {
 144         case GL_NEAREST:
 145                 t->pp_txfilter |= R300_TX_MIN_FILTER_NEAREST;
 146                 break;
 147         case GL_LINEAR:
 148                 t->pp_txfilter |= R300_TX_MIN_FILTER_LINEAR;
 149                 break;
 150         case GL_NEAREST_MIPMAP_NEAREST:
 151                 t->pp_txfilter |= R300_TX_MIN_FILTER_NEAREST|R300_TX_MIN_FILTER_MIP_NEAREST;
 152                 break;
 153         case GL_NEAREST_MIPMAP_LINEAR:
 154                 t->pp_txfilter |= R300_TX_MIN_FILTER_NEAREST|R300_TX_MIN_FILTER_MIP_LINEAR;
 155                 break;
 156         case GL_LINEAR_MIPMAP_NEAREST:
 157                 t->pp_txfilter |= R300_TX_MIN_FILTER_LINEAR|R300_TX_MIN_FILTER_MIP_NEAREST;
 158                 break;
 159         case GL_LINEAR_MIPMAP_LINEAR:
 160                 t->pp_txfilter |= R300_TX_MIN_FILTER_LINEAR|R300_TX_MIN_FILTER_MIP_LINEAR;
 161                 break;
 162         }
 163
 164         /* Note we don't have 3D mipmaps so only use the mag filter setting
 165          * to set the 3D texture filter mode.
 166          */
 167         switch (magf) {
 168         case GL_NEAREST:
 169                 t->pp_txfilter |= R300_TX_MAG_FILTER_NEAREST;
 170                 break;
 171         case GL_LINEAR:
 172                 t->pp_txfilter |= R300_TX_MAG_FILTER_LINEAR;
 173                 break;
 174         }
 175 }
 176
 177 static void r300SetTexBorderColor(radeonTexObjPtr t, const GLfloat color[4])
 178 {
 179         GLubyte c[4];
 180         CLAMPED_FLOAT_TO_UBYTE(c[0], color[0]);
 181         CLAMPED_FLOAT_TO_UBYTE(c[1], color[1]);
 182         CLAMPED_FLOAT_TO_UBYTE(c[2], color[2]);
 183         CLAMPED_FLOAT_TO_UBYTE(c[3], color[3]);
 184         t->pp_border_color = PACK_COLOR_8888(c[3], c[0], c[1], c[2]);
 185 }
 186
 187 /**
 188  * Changes variables and flags for a state update, which will happen at the
 189  * next UpdateTextureState
 190  */
 191
 192 static void r300TexParameter(GLcontext * ctx, GLenum target,
 193                              struct gl_texture_object *texObj,
 194                              GLenum pname, const GLfloat * params)
 195 {
 196         radeonTexObj* t = radeon_tex_obj(texObj);
 197         GLenum texBaseFormat;
 198
 199         if (RADEON_DEBUG & (RADEON_STATE | RADEON_TEXTURE)) {
 200                 fprintf(stderr, "%s( %s )\n", __FUNCTION__,
 201                         _mesa_lookup_enum_by_nr(pname));
 202         }
 203
 204         switch (pname) {
 205         case GL_TEXTURE_MIN_FILTER:
 206         case GL_TEXTURE_MAG_FILTER:
 207         case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 208                 r300SetTexFilter(t, texObj->MinFilter, texObj->MagFilter, texObj->MaxAnisotropy);
 209                 break;
 210
 211         case GL_TEXTURE_WRAP_S:
 212         case GL_TEXTURE_WRAP_T:
 213         case GL_TEXTURE_WRAP_R:
 214                 r300UpdateTexWrap(t);
 215                 break;
 216
 217         case GL_TEXTURE_BORDER_COLOR:
 218                 r300SetTexBorderColor(t, texObj->BorderColor.f);
 219                 break;
 220
 221         case GL_TEXTURE_BASE_LEVEL:
 222         case GL_TEXTURE_MAX_LEVEL:
 223         case GL_TEXTURE_MIN_LOD:
 224         case GL_TEXTURE_MAX_LOD:
 225                 t->validated = GL_FALSE;
 226                 break;
 227
 228         case GL_DEPTH_TEXTURE_MODE:
 229                 if (!texObj->Image[0][texObj->BaseLevel])
 230                         return;
 231                 texBaseFormat = texObj->Image[0][texObj->BaseLevel]->_BaseFormat;
 232
 233                 if (texBaseFormat == GL_DEPTH_COMPONENT ||
 234                         texBaseFormat == GL_DEPTH_STENCIL) {
 235                         r300SetDepthTexMode(texObj);
 236                         break;
 237                 } else {
 238                         /* If the texture isn't a depth texture, changing this
 239                          * state won't cause any changes to the hardware.
 240                          * Don't force a flush of texture state.
 241                          */
 242                         return;
 243                 }
 244
 245         default:
 246                 return;
 247         }
 248 }
 249
 250 static void r300DeleteTexture(GLcontext * ctx, struct gl_texture_object *texObj)
 251 {
 252         r300ContextPtr rmesa = R300_CONTEXT(ctx);
 253         radeonTexObj* t = radeon_tex_obj(texObj);
 254
 255         if (RADEON_DEBUG & (RADEON_STATE | RADEON_TEXTURE)) {
 256                 fprintf(stderr, "%s( %p (target = %s) )\n", __FUNCTION__,
 257                         (void *)texObj,
 258                         _mesa_lookup_enum_by_nr(texObj->Target));
 259         }
 260
 261         if (rmesa) {
 262                 int i;
 263                 struct radeon_bo *bo;
 264                 bo = !t->mt ? t->bo : t->mt->bo;
 265                 if (bo && radeon_bo_is_referenced_by_cs(bo, rmesa->radeon.cmdbuf.cs)) {
 266                         radeon_firevertices(&rmesa->radeon);
 267                 }
 268
 269                 for(i = 0; i < R300_MAX_TEXTURE_UNITS; ++i)
 270                         if (rmesa->hw.textures[i] == t)
 271                                 rmesa->hw.textures[i] = 0;
 272         }
 273
 274         if (t->bo) {
 275                 radeon_bo_unref(t->bo);
 276                 t->bo = NULL;
 277         }
 278
 279         radeon_miptree_unreference(&t->mt);
 280
 281         _mesa_delete_texture_object(ctx, texObj);
 282 }
 283
 284 /**
 285  * Allocate a new texture object.
 286  * Called via ctx->Driver.NewTextureObject.
 287  * Note: this function will be called during context creation to
 288  * allocate the default texture objects.
 289  * Fixup MaxAnisotropy according to user preference.
 290  */
 291 static struct gl_texture_object *r300NewTextureObject(GLcontext * ctx,
 292                                                       GLuint name,
 293                                                       GLenum target)
 294 {
 295         r300ContextPtr rmesa = R300_CONTEXT(ctx);
 296         radeonTexObj* t = CALLOC_STRUCT(radeon_tex_obj);
 297
 298
 299         if (RADEON_DEBUG & (RADEON_STATE | RADEON_TEXTURE)) {
 300                 fprintf(stderr, "%s( %p (target = %s) )\n", __FUNCTION__,
 301                         t, _mesa_lookup_enum_by_nr(target));
 302         }
 303
 304         _mesa_initialize_texture_object(&t->base, name, target);
 305         t->base.MaxAnisotropy = rmesa->radeon.initialMaxAnisotropy;
 306
 307         /* Initialize hardware state */
 308         r300UpdateTexWrap(t);
 309         r300SetTexFilter(t, t->base.MinFilter, t->base.MagFilter, t->base.MaxAnisotropy);
 310         r300SetTexBorderColor(t, t->base.BorderColor.f);
 311
 312         return &t->base;
 313 }
 314
 315 void r300InitTextureFuncs(struct dd_function_table *functions)
 316 {
 317         /* Note: we only plug in the functions we implement in the driver
 318          * since _mesa_init_driver_functions() was already called.
 319          */
 320         functions->NewTextureImage = radeonNewTextureImage;
 321         functions->FreeTexImageData = radeonFreeTexImageData;
 322         functions->MapTexture = radeonMapTexture;
 323         functions->UnmapTexture = radeonUnmapTexture;
 324
 325         functions->ChooseTextureFormat = radeonChooseTextureFormat_mesa;
 326         functions->TexImage1D = radeonTexImage1D;
 327         functions->TexImage2D = radeonTexImage2D;
 328         functions->TexImage3D = radeonTexImage3D;
 329         functions->TexSubImage1D = radeonTexSubImage1D;
 330         functions->TexSubImage2D = radeonTexSubImage2D;
 331         functions->TexSubImage3D = radeonTexSubImage3D;
 332         functions->GetTexImage = radeonGetTexImage;
 333         functions->GetCompressedTexImage = radeonGetCompressedTexImage;
 334         functions->NewTextureObject = r300NewTextureObject;
 335         functions->DeleteTexture = r300DeleteTexture;
 336         functions->IsTextureResident = driIsTextureResident;
 337
 338         functions->TexParameter = r300TexParameter;
 339
 340         functions->CompressedTexImage2D = radeonCompressedTexImage2D;
 341         functions->CompressedTexSubImage2D = radeonCompressedTexSubImage2D;
 342
 343         functions->GenerateMipmap = radeonGenerateMipmap;
 344
 345         driInitTextureFormats();
 346 }