src/mesa/drivers/dri/i810/i810texmem.c

   1 /*
   2  * GLX Hardware Device Driver for Intel i810
   3  * Copyright (C) 1999 Keith Whitwell
   4  * Texmem interface changes (C) 2003 Dave Airlie
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included
  14  * in all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  17  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * KEITH WHITWELL, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM,
  20  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  21  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
  22  * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  *
  24  */
  25
  26 #include "main/glheader.h"
  27 #include "main/macros.h"
  28 #include "main/mtypes.h"
  29 #include "main/simple_list.h"
  30 #include "main/enums.h"
  31 #include "main/colormac.h"
  32 #include "main/mm.h"
  33 #include "main/texformat.h"
  34
  35 #include "i810screen.h"
  36 #include "i810_dri.h"
  37 #include "i810context.h"
  38 #include "i810tex.h"
  39 #include "i810state.h"
  40 #include "i810ioctl.h"
  41
  42
  43 void i810DestroyTexObj(i810ContextPtr imesa, i810TextureObjectPtr t)
  44 {
  45    /* See if it was the driver's current object.
  46     */
  47    if ( imesa != NULL ) {
  48      if (imesa->CurrentTexObj[0] == t) {
  49        imesa->CurrentTexObj[0] = 0;
  50        imesa->dirty &= ~I810_UPLOAD_TEX0;
  51      }
  52
  53      if (imesa->CurrentTexObj[1] == t) {
  54        imesa->CurrentTexObj[1] = 0;
  55        imesa->dirty &= ~I810_UPLOAD_TEX1;
  56      }
  57    }
  58 }
  59
  60
  61
  62 #if defined(i386) || defined(__i386__)
  63 /* From linux kernel i386 header files, copes with odd sizes better
  64  * than COPY_DWORDS would:
  65  */
  66 static INLINE void * __memcpy(void * to, const void * from, size_t n)
  67 {
  68 int d0, d1, d2;
  69 __asm__ __volatile__(
  70         "rep ; movsl\n\t"
  71         "testb $2,%b4\n\t"
  72         "je 1f\n\t"
  73         "movsw\n"
  74         "1:\ttestb $1,%b4\n\t"
  75         "je 2f\n\t"
  76         "movsb\n"
  77         "2:"
  78         : "=&c" (d0), "=&D" (d1), "=&S" (d2)
  79         :"0" (n/4), "q" (n),"1" ((long) to),"2" ((long) from)
  80         : "memory");
  81 return (to);
  82 }
  83 #else
  84 /* Allow compilation on other architectures */
  85 #define __memcpy memcpy
  86 #endif
  87
  88 /* Upload an image from mesa's internal copy.
  89  */
  90 static void i810UploadTexLevel( i810ContextPtr imesa,
  91                                 i810TextureObjectPtr t, int hwlevel )
  92 {
  93    const struct gl_texture_image *image = t->image[hwlevel].image;
  94    int j;
  95
  96    if (!image || !image->Data)
  97       return;
  98
  99    if (image->Width * image->TexFormat->TexelBytes == t->Pitch) {
 100          GLubyte *dst = (GLubyte *)(t->BufAddr + t->image[hwlevel].offset);
 101          GLubyte *src = (GLubyte *)image->Data;
 102
 103          memcpy( dst, src, t->Pitch * image->Height );
 104    }
 105    else switch (image->TexFormat->TexelBytes) {
 106    case 1:
 107       {
 108          GLubyte *dst = (GLubyte *)(t->BufAddr + t->image[hwlevel].offset);
 109          GLubyte *src = (GLubyte *)image->Data;
 110
 111          for (j = 0 ; j < image->Height ; j++, dst += t->Pitch) {
 112             __memcpy(dst, src, image->Width );
 113             src += image->Width;
 114          }
 115       }
 116       break;
 117
 118    case 2:
 119       {
 120          GLushort *dst = (GLushort *)(t->BufAddr + t->image[hwlevel].offset);
 121          GLushort *src = (GLushort *)image->Data;
 122
 123          for (j = 0 ; j < image->Height ; j++, dst += (t->Pitch/2)) {
 124             __memcpy(dst, src, image->Width * 2 );
 125             src += image->Width;
 126          }
 127       }
 128       break;
 129
 130    default:
 131       fprintf(stderr, "%s: Not supported texel size %d\n",
 132               __FUNCTION__, image->TexFormat->TexelBytes);
 133    }
 134 }
 135
 136 /* This is called with the lock held.  May have to eject our own and/or
 137  * other client's texture objects to make room for the upload.
 138  */
 139 int i810UploadTexImagesLocked( i810ContextPtr imesa, i810TextureObjectPtr t )
 140 {
 141    int i;
 142    int ofs;
 143    int numLevels;
 144
 145    /* Do we need to eject LRU texture objects?
 146     */
 147    if (!t->base.memBlock) {
 148       int heap;
 149
 150       heap = driAllocateTexture( imesa->texture_heaps, imesa->nr_heaps,
 151                                  (driTextureObject *) t);
 152
 153       if ( heap == -1 ) {
 154         return -1;
 155       }
 156
 157       ofs = t->base.memBlock->ofs;
 158       t->BufAddr = imesa->i810Screen->tex.map + ofs;
 159       t->Setup[I810_TEXREG_MI3] = imesa->i810Screen->textureOffset + ofs;
 160
 161       if (t == imesa->CurrentTexObj[0])
 162         I810_STATECHANGE(imesa, I810_UPLOAD_TEX0);
 163
 164       if (t == imesa->CurrentTexObj[1])
 165          I810_STATECHANGE(imesa, I810_UPLOAD_TEX1);
 166
 167        /*      i810UpdateTexLRU( imesa, t );*/
 168      }
 169    driUpdateTextureLRU( (driTextureObject *) t );
 170
 171    if (imesa->texture_heaps[0]->timestamp >= GET_DISPATCH_AGE(imesa))
 172       i810WaitAgeLocked( imesa, imesa->texture_heaps[0]->timestamp );
 173
 174    numLevels = t->base.lastLevel - t->base.firstLevel + 1;
 175    for (i = 0 ; i < numLevels ; i++)
 176       if (t->base.dirty_images[0] & (1<<i))
 177          i810UploadTexLevel( imesa, t, i );
 178
 179    t->base.dirty_images[0] = 0;
 180
 181    return 0;
 182 }