src/mesa/pipe/nv40/nv40_surface.c

   1
   2 /**************************************************************************
   3  *
   4  * Copyright 2003 Tungsten Graphics, Inc., 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
   9  * "Software"), to deal in the Software without restriction, including
  10  * without limitation the rights to use, copy, modify, merge, publish,
  11  * distribute, sub license, and/or sell copies of the Software, and to
  12  * permit persons to whom the Software is furnished to do so, subject to
  13  * the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the
  16  * next paragraph) shall be included in all copies or substantial portions
  17  * of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  22  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  23  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  24  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  25  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26  *
  27  **************************************************************************/
  28
  29 #include "nv40_context.h"
  30 #include "pipe/p_defines.h"
  31 #include "pipe/p_util.h"
  32 #include "pipe/p_winsys.h"
  33 #include "pipe/p_inlines.h"
  34
  35
  36 #define CLIP_TILE \
  37    do { \
  38       if (x >= ps->width) \
  39          return; \
  40       if (y >= ps->height) \
  41          return; \
  42       if (x + w > ps->width) \
  43          w = ps->width - x; \
  44       if (y + h > ps->height) \
  45          h = ps->height -y; \
  46    } while(0)
  47
  48
  49 /**
  50  * Note: this is exactly like a8r8g8b8_get_tile() in sp_surface.c
  51  * Share it someday.
  52  */
  53 static void
  54 nv40_get_tile_rgba(struct pipe_context *pipe,
  55                    struct pipe_surface *ps,
  56                    uint x, uint y, uint w, uint h, float *p)
  57 {
  58    const unsigned *src
  59       = ((const unsigned *) (ps->map + ps->offset))
  60       + y * ps->pitch + x;
  61    unsigned i, j;
  62    unsigned w0 = w;
  63
  64    CLIP_TILE;
  65
  66    switch (ps->format) {
  67    case PIPE_FORMAT_A8R8G8B8_UNORM:
  68       for (i = 0; i < h; i++) {
  69          float *pRow = p;
  70          for (j = 0; j < w; j++) {
  71             const unsigned pixel = src[j];
  72             pRow[0] = UBYTE_TO_FLOAT((pixel >> 16) & 0xff);
  73             pRow[1] = UBYTE_TO_FLOAT((pixel >>  8) & 0xff);
  74             pRow[2] = UBYTE_TO_FLOAT((pixel >>  0) & 0xff);
  75             pRow[3] = UBYTE_TO_FLOAT((pixel >> 24) & 0xff);
  76             pRow += 4;
  77          }
  78          src += ps->pitch;
  79          p += w0 * 4;
  80       }
  81       break;
  82    case PIPE_FORMAT_Z24S8_UNORM:
  83       {
  84          const float scale = 1.0 / (float) 0xffffff;
  85          for (i = 0; i < h; i++) {
  86             float *pRow = p;
  87             for (j = 0; j < w; j++) {
  88                const unsigned pixel = src[j];
  89                pRow[0] =
  90                pRow[1] =
  91                pRow[2] =
  92                pRow[3] = ((pixel & 0xffffff) >> 8) * scale;
  93                pRow += 4;
  94             }
  95             src += ps->pitch;
  96             p += w0 * 4;
  97          }
  98       }
  99       break;
 100    default:
 101       assert(0);
 102    }
 103 }
 104
 105
 106 static void
 107 nv40_put_tile_rgba(struct pipe_context *pipe,
 108                    struct pipe_surface *ps,
 109                    uint x, uint y, uint w, uint h, const float *p)
 110 {
 111    /* TODO */
 112    assert(0);
 113 }
 114
 115
 116 /*
 117  * XXX note: same as code in sp_surface.c
 118  */
 119 static void
 120 nv40_get_tile(struct pipe_context *pipe,
 121               struct pipe_surface *ps,
 122               uint x, uint y, uint w, uint h,
 123               void *p, int dst_stride)
 124 {
 125    const uint cpp = ps->cpp;
 126    const uint w0 = w;
 127    const ubyte *pSrc;
 128    ubyte *pDest;
 129    uint i;
 130
 131    assert(ps->map);
 132
 133    CLIP_TILE;
 134
 135    if (dst_stride == 0) {
 136       dst_stride = w0 * cpp;
 137    }
 138
 139    pSrc = ps->map + ps->offset + (y * ps->pitch + x) * cpp;
 140    pDest = (ubyte *) p;
 141
 142    for (i = 0; i < h; i++) {
 143       memcpy(pDest, pSrc, w0 * cpp);
 144       pDest += dst_stride;
 145       pSrc += ps->pitch * cpp;
 146    }
 147 }
 148
 149
 150 /*
 151  * XXX note: same as code in sp_surface.c
 152  */
 153 static void
 154 nv40_put_tile(struct pipe_context *pipe,
 155               struct pipe_surface *ps,
 156               uint x, uint y, uint w, uint h,
 157               const void *p, int src_stride)
 158 {
 159    const uint cpp = ps->cpp;
 160    const uint w0 = w;
 161    const ubyte *pSrc;
 162    ubyte *pDest;
 163    uint i;
 164
 165    assert(ps->map);
 166
 167    CLIP_TILE;
 168
 169    if (src_stride == 0) {
 170       src_stride = w0 * cpp;
 171    }
 172
 173    pSrc = (const ubyte *) p;
 174    pDest = ps->map + ps->offset + (y * ps->pitch + x) * cpp;
 175
 176    for (i = 0; i < h; i++) {
 177       memcpy(pDest, pSrc, w0 * cpp);
 178       pDest += ps->pitch * cpp;
 179       pSrc += src_stride;
 180    }
 181 }
 182
 183
 184 static struct pipe_surface *
 185 nv40_get_tex_surface(struct pipe_context *pipe,
 186                      struct pipe_texture *pt,
 187                      unsigned face, unsigned level, unsigned zslice)
 188 {
 189         struct pipe_winsys *ws = pipe->winsys;
 190         struct nv40_miptree *nv40mt = (struct nv40_miptree *)pt;
 191         struct pipe_surface *ps;
 192
 193         ps = ws->surface_alloc(ws, pt->format);
 194         if (!ps)
 195                 return NULL;
 196         ws->buffer_reference(ws, &ps->buffer, nv40mt->buffer);
 197         ps->cpp = pt->cpp;
 198         ps->width = pt->width[level];
 199         ps->height = pt->height[level];
 200         ps->pitch = nv40mt->level[level].pitch / ps->cpp;
 201
 202         if (pt->target == PIPE_TEXTURE_CUBE) {
 203                 ps->offset = nv40mt->level[level].image_offset[face];
 204         } else
 205         if (pt->target == PIPE_TEXTURE_3D) {
 206                 ps->offset = nv40mt->level[level].image_offset[zslice];
 207         } else {
 208                 ps->offset = nv40mt->level[level].image_offset[0];
 209         }
 210
 211         return ps;
 212 }
 213
 214 static void
 215 nv40_surface_data(struct pipe_context *pipe, struct pipe_surface *dest,
 216                   unsigned destx, unsigned desty, const void *src,
 217                   unsigned src_stride, unsigned srcx, unsigned srcy,
 218                   unsigned width, unsigned height)
 219 {
 220         struct nv40_context *nv40 = (struct nv40_context *)pipe;
 221         struct nouveau_winsys *nvws = nv40->nvws;
 222
 223         nvws->surface_data(nvws, dest, destx, desty, src, src_stride,
 224                            srcx, srcy, width, height);
 225 }
 226
 227 static void
 228 nv40_surface_copy(struct pipe_context *pipe, struct pipe_surface *dest,
 229                   unsigned destx, unsigned desty, struct pipe_surface *src,
 230                   unsigned srcx, unsigned srcy, unsigned width, unsigned height)
 231 {
 232         struct nv40_context *nv40 = (struct nv40_context *)pipe;
 233         struct nouveau_winsys *nvws = nv40->nvws;
 234
 235         nvws->surface_copy(nvws, dest, destx, desty, src, srcx, srcy,
 236                            width, height);
 237 }
 238
 239 static void
 240 nv40_surface_fill(struct pipe_context *pipe, struct pipe_surface *dest,
 241                   unsigned destx, unsigned desty, unsigned width,
 242                   unsigned height, unsigned value)
 243 {
 244         struct nv40_context *nv40 = (struct nv40_context *)pipe;
 245         struct nouveau_winsys *nvws = nv40->nvws;
 246
 247         nvws->surface_fill(nvws, dest, destx, desty, width, height, value);
 248 }
 249
 250 void
 251 nv40_init_surface_functions(struct nv40_context *nv40)
 252 {
 253    nv40->pipe.get_tex_surface = nv40_get_tex_surface;
 254    nv40->pipe.get_tile = nv40_get_tile;
 255    nv40->pipe.put_tile = nv40_put_tile;
 256    nv40->pipe.get_tile_rgba = nv40_get_tile_rgba;
 257    nv40->pipe.put_tile_rgba = nv40_put_tile_rgba;
 258    nv40->pipe.surface_data = nv40_surface_data;
 259    nv40->pipe.surface_copy = nv40_surface_copy;
 260    nv40->pipe.surface_fill = nv40_surface_fill;
 261 }