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 "r300_ioctl.h"
  52 #include "radeon_mipmap_tree.h"
  53 #include "r300_tex.h"
  54
  55 #include "xmlpool.h"
  56
  57
  58 static unsigned int translate_wrap_mode(GLenum wrapmode)
  59 {
  60         switch(wrapmode) {
  61         case GL_REPEAT: return R300_TX_REPEAT;
  62         case GL_CLAMP: return R300_TX_CLAMP;
  63         case GL_CLAMP_TO_EDGE: return R300_TX_CLAMP_TO_EDGE;
  64         case GL_CLAMP_TO_BORDER: return R300_TX_CLAMP_TO_BORDER;
  65         case GL_MIRRORED_REPEAT: return R300_TX_REPEAT | R300_TX_MIRRORED;
  66         case GL_MIRROR_CLAMP_EXT: return R300_TX_CLAMP | R300_TX_MIRRORED;
  67         case GL_MIRROR_CLAMP_TO_EDGE_EXT: return R300_TX_CLAMP_TO_EDGE | R300_TX_MIRRORED;
  68         case GL_MIRROR_CLAMP_TO_BORDER_EXT: return R300_TX_CLAMP_TO_BORDER | R300_TX_MIRRORED;
  69         default:
  70                 _mesa_problem(NULL, "bad wrap mode in %s", __FUNCTION__);
  71                 return 0;
  72         }
  73 }
  74
  75
  76 /**
  77  * Update the cached hardware registers based on the current texture wrap modes.
  78  *
  79  * \param t Texture object whose wrap modes are to be set
  80  */
  81 static void r300UpdateTexWrap(radeonTexObjPtr t)
  82 {
  83         struct gl_texture_object *tObj = &t->base;
  84
  85         t->pp_txfilter &=
  86             ~(R300_TX_WRAP_S_MASK | R300_TX_WRAP_T_MASK | R300_TX_WRAP_R_MASK);
  87
  88         t->pp_txfilter |= translate_wrap_mode(tObj->WrapS) << R300_TX_WRAP_S_SHIFT;
  89
  90         if (tObj->Target != GL_TEXTURE_1D) {
  91                 t->pp_txfilter |= translate_wrap_mode(tObj->WrapT) << R300_TX_WRAP_T_SHIFT;
  92
  93                 if (tObj->Target == GL_TEXTURE_3D)
  94                         t->pp_txfilter |= translate_wrap_mode(tObj->WrapR) << R300_TX_WRAP_R_SHIFT;
  95         }
  96 }
  97
  98 static GLuint aniso_filter(GLfloat anisotropy)
  99 {
 100         if (anisotropy >= 16.0) {
 101                 return R300_TX_MAX_ANISO_16_TO_1;
 102         } else if (anisotropy >= 8.0) {
 103                 return R300_TX_MAX_ANISO_8_TO_1;
 104         } else if (anisotropy >= 4.0) {
 105                 return R300_TX_MAX_ANISO_4_TO_1;
 106         } else if (anisotropy >= 2.0) {
 107                 return R300_TX_MAX_ANISO_2_TO_1;
 108         } else {
 109                 return R300_TX_MAX_ANISO_1_TO_1;
 110         }
 111 }
 112
 113 /**
 114  * Set the texture magnification and minification modes.
 115  *
 116  * \param t Texture whose filter modes are to be set
 117  * \param minf Texture minification mode
 118  * \param magf Texture magnification mode
 119  * \param anisotropy Maximum anisotropy level
 120  */
 121 static void r300SetTexFilter(radeonTexObjPtr t, GLenum minf, GLenum magf, GLfloat anisotropy)
 122 {
 123         /* Force revalidation to account for switches from/to mipmapping. */
 124         t->validated = GL_FALSE;
 125
 126         t->pp_txfilter &= ~(R300_TX_MIN_FILTER_MASK | R300_TX_MIN_FILTER_MIP_MASK | R300_TX_MAG_FILTER_MASK | R300_TX_MAX_ANISO_MASK);
 127         t->pp_txfilter_1 &= ~R300_EDGE_ANISO_EDGE_ONLY;
 128
 129         /* Note that EXT_texture_filter_anisotropic is extremely vague about
 130          * how anisotropic filtering interacts with the "normal" filter modes.
 131          * When anisotropic filtering is enabled, we override min and mag
 132          * filter settings completely. This includes driconf's settings.
 133          */
 134         if (anisotropy >= 2.0 && (minf != GL_NEAREST) && (magf != GL_NEAREST)) {
 135                 t->pp_txfilter |= R300_TX_MAG_FILTER_ANISO
 136                         | R300_TX_MIN_FILTER_ANISO
 137                         | R300_TX_MIN_FILTER_MIP_LINEAR
 138                         | aniso_filter(anisotropy);
 139                 if (RADEON_DEBUG & RADEON_TEXTURE)
 140                         fprintf(stderr, "Using maximum anisotropy of %f\n", anisotropy);
 141                 return;
 142         }
 143
 144         switch (minf) {
 145         case GL_NEAREST:
 146                 t->pp_txfilter |= R300_TX_MIN_FILTER_NEAREST;
 147                 break;
 148         case GL_LINEAR:
 149                 t->pp_txfilter |= R300_TX_MIN_FILTER_LINEAR;
 150                 break;
 151         case GL_NEAREST_MIPMAP_NEAREST:
 152                 t->pp_txfilter |= R300_TX_MIN_FILTER_NEAREST|R300_TX_MIN_FILTER_MIP_NEAREST;
 153                 break;
 154         case GL_NEAREST_MIPMAP_LINEAR:
 155                 t->pp_txfilter |= R300_TX_MIN_FILTER_NEAREST|R300_TX_MIN_FILTER_MIP_LINEAR;
 156                 break;
 157         case GL_LINEAR_MIPMAP_NEAREST:
 158                 t->pp_txfilter |= R300_TX_MIN_FILTER_LINEAR|R300_TX_MIN_FILTER_MIP_NEAREST;
 159                 break;
 160         case GL_LINEAR_MIPMAP_LINEAR:
 161                 t->pp_txfilter |= R300_TX_MIN_FILTER_LINEAR|R300_TX_MIN_FILTER_MIP_LINEAR;
 162                 break;
 163         }
 164
 165         /* Note we don't have 3D mipmaps so only use the mag filter setting
 166          * to set the 3D texture filter mode.
 167          */
 168         switch (magf) {
 169         case GL_NEAREST:
 170                 t->pp_txfilter |= R300_TX_MAG_FILTER_NEAREST;
 171                 break;
 172         case GL_LINEAR:
 173                 t->pp_txfilter |= R300_TX_MAG_FILTER_LINEAR;
 174                 break;
 175         }
 176 }
 177
 178 static void r300SetTexBorderColor(radeonTexObjPtr t, const GLfloat color[4])
 179 {
 180         GLubyte c[4];
 181         CLAMPED_FLOAT_TO_UBYTE(c[0], color[0]);
 182         CLAMPED_FLOAT_TO_UBYTE(c[1], color[1]);
 183         CLAMPED_FLOAT_TO_UBYTE(c[2], color[2]);
 184         CLAMPED_FLOAT_TO_UBYTE(c[3], color[3]);
 185         t->pp_border_color = PACK_COLOR_8888(c[3], c[0], c[1], c[2]);
 186 }
 187
 188 /**
 189  * Changes variables and flags for a state update, which will happen at the
 190  * next UpdateTextureState
 191  */
 192
 193 static void r300TexParameter(GLcontext * ctx, GLenum target,
 194                              struct gl_texture_object *texObj,
 195                              GLenum pname, const GLfloat * params)
 196 {
 197         radeonTexObj* t = radeon_tex_obj(texObj);
 198         GLenum texBaseFormat;
 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                 t->validated = GL_FALSE;
 227                 break;
 228
 229         case GL_DEPTH_TEXTURE_MODE:
 230                 if (!texObj->Image[0][texObj->BaseLevel])
 231                         return;
 232                 texBaseFormat = texObj->Image[0][texObj->BaseLevel]->_BaseFormat;
 233
 234                 if (texBaseFormat == GL_DEPTH_COMPONENT ||
 235                         texBaseFormat == GL_DEPTH_STENCIL) {
 236                         r300SetDepthTexMode(texObj);
 237                         break;
 238                 } else {
 239                         /* If the texture isn't a depth texture, changing this
 240                          * state won't cause any changes to the hardware.
 241                          * Don't force a flush of texture state.
 242                          */
 243                         return;
 244                 }
 245
 246         default:
 247                 return;
 248         }
 249 }
 250
 251 static void r300DeleteTexture(GLcontext * ctx, struct gl_texture_object *texObj)
 252 {
 253         r300ContextPtr rmesa = R300_CONTEXT(ctx);
 254         radeonTexObj* t = radeon_tex_obj(texObj);
 255
 256         if (RADEON_DEBUG & (RADEON_STATE | RADEON_TEXTURE)) {
 257                 fprintf(stderr, "%s( %p (target = %s) )\n", __FUNCTION__,
 258                         (void *)texObj,
 259                         _mesa_lookup_enum_by_nr(texObj->Target));
 260         }
 261
 262         if (rmesa) {
 263                 int i;
 264                 struct radeon_bo *bo;
 265                 bo = !t->mt ? t->bo : t->mt->bo;
 266                 if (bo && radeon_bo_is_referenced_by_cs(bo, rmesa->radeon.cmdbuf.cs)) {
 267                         radeon_firevertices(&rmesa->radeon);
 268                 }
 269
 270                 for(i = 0; i < R300_MAX_TEXTURE_UNITS; ++i)
 271                         if (rmesa->hw.textures[i] == t)
 272                                 rmesa->hw.textures[i] = 0;
 273         }
 274
 275         if (t->bo) {
 276                 radeon_bo_unref(t->bo);
 277                 t->bo = NULL;
 278         }
 279
 280         radeon_miptree_unreference(&t->mt);
 281
 282         _mesa_delete_texture_object(ctx, texObj);
 283 }
 284
 285 /**
 286  * Allocate a new texture object.
 287  * Called via ctx->Driver.NewTextureObject.
 288  * Note: this function will be called during context creation to
 289  * allocate the default texture objects.
 290  * Fixup MaxAnisotropy according to user preference.
 291  */
 292 static struct gl_texture_object *r300NewTextureObject(GLcontext * ctx,
 293                                                       GLuint name,
 294                                                       GLenum target)
 295 {
 296         r300ContextPtr rmesa = R300_CONTEXT(ctx);
 297         radeonTexObj* t = CALLOC_STRUCT(radeon_tex_obj);
 298
 299
 300         if (RADEON_DEBUG & (RADEON_STATE | RADEON_TEXTURE)) {
 301                 fprintf(stderr, "%s( %p (target = %s) )\n", __FUNCTION__,
 302                         t, _mesa_lookup_enum_by_nr(target));
 303         }
 304
 305         _mesa_initialize_texture_object(&t->base, name, target);
 306         t->base.MaxAnisotropy = rmesa->radeon.initialMaxAnisotropy;
 307
 308         /* Initialize hardware state */
 309         r300UpdateTexWrap(t);
 310         r300SetTexFilter(t, t->base.MinFilter, t->base.MagFilter, t->base.MaxAnisotropy);
 311         r300SetTexBorderColor(t, t->base.BorderColor);
 312
 313         return &t->base;
 314 }
 315
 316 void r300InitTextureFuncs(struct dd_function_table *functions)
 317 {
 318         /* Note: we only plug in the functions we implement in the driver
 319          * since _mesa_init_driver_functions() was already called.
 320          */
 321         functions->NewTextureImage = radeonNewTextureImage;
 322         functions->FreeTexImageData = radeonFreeTexImageData;
 323         functions->MapTexture = radeonMapTexture;
 324         functions->UnmapTexture = radeonUnmapTexture;
 325
 326         functions->ChooseTextureFormat = radeonChooseTextureFormat_mesa;
 327         functions->TexImage1D = radeonTexImage1D;
 328         functions->TexImage2D = radeonTexImage2D;
 329         functions->TexImage3D = radeonTexImage3D;
 330         functions->TexSubImage1D = radeonTexSubImage1D;
 331         functions->TexSubImage2D = radeonTexSubImage2D;
 332         functions->TexSubImage3D = radeonTexSubImage3D;
 333         functions->GetTexImage = radeonGetTexImage;
 334         functions->GetCompressedTexImage = radeonGetCompressedTexImage;
 335         functions->NewTextureObject = r300NewTextureObject;
 336         functions->DeleteTexture = r300DeleteTexture;
 337         functions->IsTextureResident = driIsTextureResident;
 338
 339         functions->TexParameter = r300TexParameter;
 340
 341         functions->CompressedTexImage2D = radeonCompressedTexImage2D;
 342         functions->CompressedTexSubImage2D = radeonCompressedTexSubImage2D;
 343
 344         functions->GenerateMipmap = radeonGenerateMipmap;
 345
 346         driInitTextureFormats();
 347 }