src/mesa/drivers/dri/r128/r128_texmem.c

   1 /**************************************************************************
   2
   3 Copyright 1999, 2000 ATI Technologies Inc. and Precision Insight, Inc.,
   4                                                Cedar Park, Texas.
   5 All Rights Reserved.
   6
   7 Permission is hereby granted, free of charge, to any person obtaining a
   8 copy of this software and associated documentation files (the "Software"),
   9 to deal in the Software without restriction, including without limitation
  10 on the rights to use, copy, modify, merge, publish, distribute, sub
  11 license, and/or sell copies of the Software, and to permit persons to whom
  12 the Software is furnished to do so, subject to the following conditions:
  13
  14 The above copyright notice and this permission notice (including the next
  15 paragraph) shall be included in all copies or substantial portions of the
  16 Software.
  17
  18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20 FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  21 ATI, PRECISION INSIGHT AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  22 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23 OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24 USE OR OTHER DEALINGS IN THE SOFTWARE.
  25
  26 **************************************************************************/
  27
  28 /*
  29  * Authors:
  30  *   Gareth Hughes <gareth@valinux.com>
  31  *   Kevin E. Martin <martin@valinux.com>
  32  *   Brian Paul <brianp@valinux.com>
  33  */
  34
  35 #include "r128_context.h"
  36 #include "r128_state.h"
  37 #include "r128_ioctl.h"
  38 #include "r128_tris.h"
  39 #include "r128_tex.h"
  40
  41 #include "context.h"
  42 #include "macros.h"
  43 #include "simple_list.h"
  44 #include "texformat.h"
  45 #include "imports.h"
  46
  47 #define TEX_0   1
  48 #define TEX_1   2
  49
  50
  51 /* Destroy hardware state associated with texture `t'.
  52  */
  53 void r128DestroyTexObj( r128ContextPtr rmesa, r128TexObjPtr t )
  54 {
  55     unsigned   i;
  56
  57
  58     /* See if it was the driver's current object.
  59      */
  60
  61     if ( rmesa != NULL )
  62     {
  63         for ( i = 0 ; i < rmesa->glCtx->Const.MaxTextureUnits ; i++ )
  64         {
  65             if ( t == rmesa->CurrentTexObj[ i ] ) {
  66                 assert( t->base.bound & (1 << i) );
  67                 rmesa->CurrentTexObj[ i ] = NULL;
  68             }
  69         }
  70     }
  71 }
  72
  73
  74 /**
  75  * Upload the texture image associated with texture \a t at the specified
  76  * level at the address relative to \a start.
  77  */
  78 static void uploadSubImage( r128ContextPtr rmesa, r128TexObjPtr t,
  79                             GLint level,
  80                             GLint x, GLint y, GLint width, GLint height )
  81 {
  82    struct gl_texture_image *image;
  83    int texelsPerDword = 0;
  84    int imageWidth, imageHeight;
  85    int remaining, rows;
  86    int format, dwords;
  87    uint32_t pitch, offset;
  88    int i;
  89
  90    /* Ensure we have a valid texture to upload */
  91    if ( ( level < 0 ) || ( level > R128_MAX_TEXTURE_LEVELS ) )
  92       return;
  93
  94    image = t->base.tObj->Image[0][level];
  95    if ( !image )
  96       return;
  97
  98    switch ( image->TexFormat->TexelBytes ) {
  99    case 1: texelsPerDword = 4; break;
 100    case 2: texelsPerDword = 2; break;
 101    case 4: texelsPerDword = 1; break;
 102    }
 103
 104 #if 1
 105    /* FIXME: The subimage index calcs are wrong... */
 106    x = 0;
 107    y = 0;
 108    width = image->Width;
 109    height = image->Height;
 110 #endif
 111
 112    imageWidth  = image->Width;
 113    imageHeight = image->Height;
 114
 115    format = t->textureFormat >> 16;
 116
 117    /* The texel upload routines have a minimum width, so force the size
 118     * if needed.
 119     */
 120    if ( imageWidth < texelsPerDword ) {
 121       int factor;
 122
 123       factor = texelsPerDword / imageWidth;
 124       imageWidth = texelsPerDword;
 125       imageHeight /= factor;
 126       if ( imageHeight == 0 ) {
 127          /* In this case, the texel converter will actually walk a
 128           * texel or two off the end of the image, but normal malloc
 129           * alignment should prevent it from ever causing a fault.
 130           */
 131          imageHeight = 1;
 132       }
 133    }
 134
 135    /* We can't upload to a pitch less than 8 texels so we will need to
 136     * linearly upload all modified rows for textures smaller than this.
 137     * This makes the x/y/width/height different for the blitter and the
 138     * texture walker.
 139     */
 140    if ( imageWidth >= 8 ) {
 141       /* The texture walker and the blitter look identical */
 142       pitch = imageWidth >> 3;
 143    } else {
 144       int factor;
 145       int y2;
 146       int start, end;
 147
 148       start = (y * imageWidth) & ~7;
 149       end = (y + height) * imageWidth;
 150
 151       if ( end - start < 8 ) {
 152          /* Handle the case where the total number of texels
 153           * uploaded is < 8.
 154           */
 155          x = 0;
 156          y = start / 8;
 157          width = end - start;
 158          height = 1;
 159       } else {
 160          /* Upload some number of full 8 texel blit rows */
 161          factor = 8 / imageWidth;
 162
 163          y2 = y + height - 1;
 164          y /= factor;
 165          y2 /= factor;
 166
 167          x = 0;
 168          width = 8;
 169          height = y2 - y + 1;
 170       }
 171
 172       /* Fixed pitch of 8 */
 173       pitch = 1;
 174    }
 175
 176    dwords = width * height / texelsPerDword;
 177    offset = t->bufAddr + t->image[level - t->base.firstLevel].offset;
 178
 179 #if ENABLE_PERF_BOXES
 180    /* Bump the performace counter */
 181    rmesa->c_textureBytes += (dwords << 2);
 182 #endif
 183
 184    if ( R128_DEBUG & DEBUG_VERBOSE_API ) {
 185       fprintf( stderr, "r128UploadSubImage: %d,%d of %d,%d at %d,%d\n",
 186                width, height, image->Width, image->Height, x, y );
 187       fprintf( stderr, "          blit ofs: 0x%07x pitch: 0x%x dwords: %d "
 188                "level: %d format: %x\n",
 189                (GLuint)offset, (GLuint)pitch, dwords, level, format );
 190    }
 191
 192    /* Subdivide the texture if required */
 193    if ( dwords <= R128_BUFFER_MAX_DWORDS / 2 ) {
 194       rows = height;
 195    } else {
 196       rows = (R128_BUFFER_MAX_DWORDS * texelsPerDword) / (2 * width);
 197    }
 198
 199    for ( i = 0, remaining = height ;
 200          remaining > 0 ;
 201          remaining -= rows, y += rows, i++ )
 202    {
 203       uint32_t *dst;
 204       drmBufPtr buffer;
 205
 206       assert(image->Data);
 207
 208       height = MIN2(remaining, rows);
 209
 210       /* Grab the indirect buffer for the texture blit */
 211       LOCK_HARDWARE( rmesa );
 212       buffer = r128GetBufferLocked( rmesa );
 213
 214       dst = (uint32_t *)((char *)buffer->address + R128_HOSTDATA_BLIT_OFFSET);
 215
 216       /* Copy the next chunck of the texture image into the blit buffer */
 217       {
 218          const GLubyte *src = (const GLubyte *) image->Data +
 219             (y * image->Width + x) * image->TexFormat->TexelBytes;
 220          const GLuint bytes = width * height * image->TexFormat->TexelBytes;
 221          memcpy(dst, src, bytes);
 222       }
 223
 224       r128FireBlitLocked( rmesa, buffer,
 225                           offset, pitch, format,
 226                           x, y, width, height );
 227       UNLOCK_HARDWARE( rmesa );
 228    }
 229
 230    rmesa->new_state |= R128_NEW_CONTEXT;
 231    rmesa->dirty |= R128_UPLOAD_CONTEXT | R128_UPLOAD_MASKS;
 232 }
 233
 234
 235 /* Upload the texture images associated with texture `t'.  This might
 236  * require removing our own and/or other client's texture objects to
 237  * make room for these images.
 238  */
 239 void r128UploadTexImages( r128ContextPtr rmesa, r128TexObjPtr t )
 240 {
 241    const GLint numLevels = t->base.lastLevel - t->base.firstLevel + 1;
 242    GLint i;
 243
 244    if ( R128_DEBUG & DEBUG_VERBOSE_API ) {
 245       fprintf( stderr, "%s( %p, %p )\n",
 246                __FUNCTION__, (void *) rmesa->glCtx, (void *) t );
 247    }
 248
 249    assert(t);
 250
 251    LOCK_HARDWARE( rmesa );
 252
 253    if ( !t->base.memBlock ) {
 254       int heap;
 255
 256
 257       heap = driAllocateTexture( rmesa->texture_heaps, rmesa->nr_heaps,
 258                                  (driTextureObject *) t );
 259       if ( heap == -1 ) {
 260          UNLOCK_HARDWARE( rmesa );
 261          return;
 262       }
 263
 264       /* Set the base offset of the texture image */
 265       t->bufAddr = rmesa->r128Screen->texOffset[heap]
 266            + t->base.memBlock->ofs;
 267
 268       /* Set texture offsets for each mipmap level */
 269       if ( t->setup.tex_cntl & R128_MIP_MAP_DISABLE ) {
 270          for ( i = 0 ; i < R128_MAX_TEXTURE_LEVELS ; i++ ) {
 271             t->setup.tex_offset[i] = t->bufAddr;
 272          }
 273       } else {
 274          for ( i = 0; i < numLevels; i++ ) {
 275             const int j = numLevels - i - 1;
 276             t->setup.tex_offset[j] = t->bufAddr + t->image[i].offset;
 277          }
 278       }
 279    }
 280
 281    /* Let the world know we've used this memory recently.
 282     */
 283    driUpdateTextureLRU( (driTextureObject *) t );
 284    UNLOCK_HARDWARE( rmesa );
 285
 286    /* Upload any images that are new */
 287    if ( t->base.dirty_images[0] ) {
 288       for ( i = 0 ; i < numLevels; i++ ) {
 289          const GLint j = t->base.firstLevel + i;  /* the texObj's level */
 290          if ( t->base.dirty_images[0] & (1 << j) ) {
 291             uploadSubImage( rmesa, t, j, 0, 0,
 292                             t->image[i].width, t->image[i].height );
 293          }
 294       }
 295
 296       rmesa->setup.tex_cntl_c |= R128_TEX_CACHE_FLUSH;
 297       rmesa->dirty |= R128_UPLOAD_CONTEXT;
 298       t->base.dirty_images[0] = 0;
 299    }
 300 }