src/mesa/drivers/dri/mga/mgatexmem.c

   1 /*
   2  * Copyright 2000-2001 VA Linux Systems, Inc.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * on the rights to use, copy, modify, merge, publish, distribute, sub
   9  * license, and/or sell copies of the Software, and to permit persons to whom
  10  * the Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
  19  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Keith Whitwell <keith@tungstengraphics.com>
  26  */
  27
  28 #include "main/glheader.h"
  29
  30 #include "main/mm.h"
  31 #include "mgacontext.h"
  32 #include "mgatex.h"
  33 #include "mgaregs.h"
  34 #include "mgaioctl.h"
  35 #include "mga_xmesa.h"
  36
  37 #include "main/imports.h"
  38 #include "main/simple_list.h"
  39
  40 /**
  41  * Destroy any device-dependent state associated with the texture.  This may
  42  * include NULLing out hardware state that points to the texture.
  43  */
  44 void
  45 mgaDestroyTexObj( mgaContextPtr mmesa, mgaTextureObjectPtr t )
  46 {
  47     unsigned   i;
  48
  49
  50     /* See if it was the driver's current object.
  51      */
  52
  53     if ( mmesa != NULL )
  54     {
  55         if ( t->age > mmesa->dirtyAge )
  56             mmesa->dirtyAge = t->age;
  57
  58         for ( i = 0 ; i < mmesa->glCtx->Const.MaxTextureUnits ; i++ )
  59         {
  60             if ( t == mmesa->CurrentTexObj[ i ] ) {
  61                 mmesa->CurrentTexObj[ i ] = NULL;
  62             }
  63         }
  64     }
  65 }
  66
  67
  68 /**
  69  * Upload a texture image from system memory to either on-card or AGP
  70  * memory.  Uploads to on-card memory are performed using an ILOAD operation.
  71  * This is used for both initial loading of the entire image, and texSubImage
  72  * updates.
  73  *
  74  * Performed with the hardware lock held.
  75  *
  76  * Even though this function is named "upload subimage," the entire image
  77  * is uploaded.
  78  *
  79  * \param mmesa  Driver context.
  80  * \param t      Texture to be uploaded.
  81  * \param hwlevel  Mipmap level of the texture to be uploaded.
  82  *
  83  * \bug As mentioned above, this fuction actually copies the entier mipmap
  84  *      level.  There should be a version of this function that performs
  85  *      sub-rectangle uploads.  This will perform quite a bit better if only
  86  *      a small portion of a larger texture has been updated.  Care would
  87  *      need to be take with such an implementation once glCopyTexImage has
  88  *      been hardware accelerated.
  89  */
  90 static void mgaUploadSubImage( mgaContextPtr mmesa,
  91                                mgaTextureObjectPtr t, GLint hwlevel )
  92 {
  93    struct gl_texture_image * texImage;
  94    unsigned     offset;
  95    unsigned     texelBytes;
  96    unsigned     length;
  97    const int level = hwlevel + t->base.firstLevel;
  98
  99
 100    if ( (hwlevel < 0)
 101         || (hwlevel >= (MGA_IS_G200(mmesa)
 102                       ? G200_TEX_MAXLEVELS : G400_TEX_MAXLEVELS)) ) {
 103       fprintf( stderr, "[%s:%d] level = %d\n", __FILE__, __LINE__, level );
 104       return;
 105    }
 106
 107    texImage = t->base.tObj->Image[0][level];
 108    if ( texImage == NULL ) {
 109       fprintf( stderr, "[%s:%d] Image[%d] = NULL\n", __FILE__, __LINE__,
 110                level );
 111       return;
 112    }
 113
 114
 115    if (texImage->Data == NULL) {
 116       fprintf(stderr, "null texture image data tObj %p level %d\n",
 117               (void *) t->base.tObj, level);
 118       return;
 119    }
 120
 121
 122    /* find the proper destination offset for this level */
 123    if ( MGA_IS_G200(mmesa) ) {
 124       offset = (t->base.memBlock->ofs + t->offsets[hwlevel]);
 125    }
 126    else {
 127       unsigned  i;
 128
 129       offset = t->base.memBlock->ofs;
 130       for ( i = 0 ; i < hwlevel ; i++ ) {
 131          offset += (t->offsets[1] >> (i * 2));
 132       }
 133    }
 134
 135
 136    /* Copy the texture from system memory to a memory space that can be
 137     * directly used by the hardware for texturing.
 138     */
 139
 140    texelBytes = _mesa_get_format_bytes(texImage->TexFormat->MesaFormat);
 141    length = texImage->Width * texImage->Height * texelBytes;
 142    if ( t->base.heap->heapId == MGA_CARD_HEAP ) {
 143       unsigned  tex_offset = 0;
 144       unsigned  to_copy;
 145
 146
 147       /* We may not be able to upload the entire texture in one batch due to
 148        * register limits or dma buffer limits.  Split the copy up into maximum
 149        * sized chunks.
 150        */
 151
 152       offset += mmesa->mgaScreen->textureOffset[ t->base.heap->heapId ];
 153       while ( length != 0 ) {
 154          mgaGetILoadBufferLocked( mmesa );
 155
 156          /* The kernel ILOAD ioctl requires that the lenght be an even multiple
 157           * of MGA_ILOAD_ALIGN.
 158           */
 159          length = ((length) + MGA_ILOAD_MASK) & ~MGA_ILOAD_MASK;
 160
 161          to_copy = MIN2( length, MGA_BUFFER_SIZE );
 162          (void) memcpy( mmesa->iload_buffer->address,
 163                         (GLubyte *) texImage->Data + tex_offset, to_copy );
 164
 165          if ( MGA_DEBUG & DEBUG_VERBOSE_TEXTURE )
 166              fprintf(stderr, "[%s:%d] address/size = 0x%08lx/%d\n",
 167                      __FILE__, __LINE__,
 168                      (long) (offset + tex_offset),
 169                      to_copy );
 170
 171          mgaFireILoadLocked( mmesa, offset + tex_offset, to_copy );
 172          tex_offset += to_copy;
 173          length -= to_copy;
 174       }
 175    } else {
 176       /* FIXME: the sync for direct copy reduces speed.. */
 177       /* This works, is slower for uploads to card space and needs
 178        * additional synchronization with the dma stream.
 179        */
 180
 181       UPDATE_LOCK(mmesa, DRM_LOCK_FLUSH | DRM_LOCK_QUIESCENT);
 182
 183       memcpy( mmesa->mgaScreen->texVirtual[t->base.heap->heapId] + offset,
 184               texImage->Data, length );
 185
 186       if ( MGA_DEBUG & DEBUG_VERBOSE_TEXTURE )
 187          fprintf(stderr, "[%s:%d] address/size = 0x%08lx/%d\n",
 188                  __FILE__, __LINE__,
 189                  (long) (mmesa->mgaScreen->texVirtual[t->base.heap->heapId]
 190                          + offset),
 191                  length);
 192    }
 193 }
 194
 195
 196 /**
 197  * Upload the texture images associated with texture \a t.  This might
 198  * require the allocation of texture memory.
 199  *
 200  * \param mmesa Context pointer
 201  * \param t Texture to be uploaded
 202  */
 203
 204 int mgaUploadTexImages( mgaContextPtr mmesa, mgaTextureObjectPtr t )
 205 {
 206    int i;
 207    int ofs;
 208
 209
 210    if ( (t == NULL) || (t->base.totalSize == 0) )
 211       return 0;
 212
 213    LOCK_HARDWARE( mmesa );
 214
 215    if (t->base.memBlock == NULL ) {
 216       int heap;
 217
 218       heap = driAllocateTexture( mmesa->texture_heaps, mmesa->nr_heaps,
 219                                  (driTextureObject *) t );
 220       if ( heap == -1 ) {
 221          UNLOCK_HARDWARE( mmesa );
 222          return -1;
 223       }
 224
 225       ofs = mmesa->mgaScreen->textureOffset[ heap ]
 226            + t->base.memBlock->ofs;
 227
 228       if ( MGA_IS_G200(mmesa) ) {
 229          t->setup.texorg  = ofs;
 230          t->setup.texorg1 = ofs + t->offsets[1];
 231          t->setup.texorg2 = ofs + t->offsets[2];
 232          t->setup.texorg3 = ofs + t->offsets[3];
 233          t->setup.texorg4 = ofs + t->offsets[4];
 234       }
 235       else {
 236          t->setup.texorg  = ofs | TO_texorgoffsetsel;
 237          t->setup.texorg1 = t->offsets[1];
 238          t->setup.texorg2 = 0;
 239          t->setup.texorg3 = 0;
 240          t->setup.texorg4 = 0;
 241       }
 242
 243       mmesa->dirty |= MGA_UPLOAD_CONTEXT;
 244    }
 245
 246    /* Let the world know we've used this memory recently.
 247     */
 248    driUpdateTextureLRU( (driTextureObject *) t );
 249
 250    if (MGA_DEBUG&DEBUG_VERBOSE_TEXTURE)
 251       fprintf(stderr, "[%s:%d] dispatch age: %d age freed memory: %d\n",
 252               __FILE__, __LINE__,
 253               GET_DISPATCH_AGE(mmesa), mmesa->dirtyAge);
 254
 255    if (mmesa->dirtyAge >= GET_DISPATCH_AGE(mmesa))
 256       mgaWaitAgeLocked( mmesa, mmesa->dirtyAge );
 257
 258    if (t->base.dirty_images[0]) {
 259       const int numLevels = t->base.lastLevel - t->base.firstLevel + 1;
 260
 261       if (MGA_DEBUG&DEBUG_VERBOSE_TEXTURE)
 262          fprintf(stderr, "[%s:%d] dirty_images[0] = 0x%04x\n",
 263                  __FILE__, __LINE__, t->base.dirty_images[0] );
 264
 265       for (i = 0 ; i < numLevels ; i++) {
 266          if ( (t->base.dirty_images[0] & (1U << i)) != 0 ) {
 267             mgaUploadSubImage( mmesa, t, i );
 268          }
 269       }
 270       t->base.dirty_images[0] = 0;
 271    }
 272
 273
 274    UNLOCK_HARDWARE( mmesa );
 275
 276    return 0;
 277 }