src/mesa/state_tracker/st_texture.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include <stdio.h>
  29
  30 #include "st_context.h"
  31 #include "st_format.h"
  32 #include "st_texture.h"
  33 #include "st_cb_fbo.h"
  34 #include "main/enums.h"
  35
  36 #include "pipe/p_state.h"
  37 #include "pipe/p_context.h"
  38 #include "pipe/p_defines.h"
  39 #include "util/u_inlines.h"
  40 #include "util/u_format.h"
  41 #include "util/u_rect.h"
  42 #include "util/u_math.h"
  43
  44
  45 #define DBG if(0) printf
  46
  47
  48 /**
  49  * Allocate a new pipe_resource object
  50  * width0, height0, depth0 are the dimensions of the level 0 image
  51  * (the highest resolution).  last_level indicates how many mipmap levels
  52  * to allocate storage for.  For non-mipmapped textures, this will be zero.
  53  */
  54 struct pipe_resource *
  55 st_texture_create(struct st_context *st,
  56                   enum pipe_texture_target target,
  57                   enum pipe_format format,
  58                   GLuint last_level,
  59                   GLuint width0,
  60                   GLuint height0,
  61                   GLuint depth0,
  62                   GLuint bind )
  63 {
  64    struct pipe_resource pt, *newtex;
  65    struct pipe_screen *screen = st->pipe->screen;
  66
  67    assert(target < PIPE_MAX_TEXTURE_TYPES);
  68    assert(width0 > 0);
  69    assert(height0 > 0);
  70    assert(depth0 > 0);
  71
  72    DBG("%s target %s format %s last_level %d\n", __FUNCTION__,
  73        _mesa_lookup_enum_by_nr(target),
  74        _mesa_lookup_enum_by_nr(format), last_level);
  75
  76    assert(format);
  77    assert(screen->is_format_supported(screen, format, target, 0,
  78                                       PIPE_BIND_SAMPLER_VIEW, 0));
  79
  80    memset(&pt, 0, sizeof(pt));
  81    pt.target = target;
  82    pt.format = format;
  83    pt.last_level = last_level;
  84    pt.width0 = width0;
  85    pt.height0 = height0;
  86    pt.depth0 = depth0;
  87    pt.array_size = (target == PIPE_TEXTURE_CUBE ? 6 : 1);
  88    pt.usage = PIPE_USAGE_DEFAULT;
  89    pt.bind = bind;
  90    pt.flags = 0;
  91
  92    newtex = screen->resource_create(screen, &pt);
  93
  94    assert(!newtex || pipe_is_referenced(&newtex->reference));
  95
  96    return newtex;
  97 }
  98
  99
 100 /**
 101  * Check if a texture image can be pulled into a unified mipmap texture.
 102  */
 103 GLboolean
 104 st_texture_match_image(const struct pipe_resource *pt,
 105                        const struct gl_texture_image *image,
 106                        GLuint face, GLuint level)
 107 {
 108    /* Images with borders are never pulled into mipmap textures.
 109     */
 110    if (image->Border)
 111       return GL_FALSE;
 112
 113    /* Check if this image's format matches the established texture's format.
 114     */
 115    if (st_mesa_format_to_pipe_format(image->TexFormat) != pt->format)
 116       return GL_FALSE;
 117
 118    /* Test if this image's size matches what's expected in the
 119     * established texture.
 120     */
 121    if (image->Width != u_minify(pt->width0, level) ||
 122        image->Height != u_minify(pt->height0, level) ||
 123        image->Depth != u_minify(pt->depth0, level))
 124       return GL_FALSE;
 125
 126    return GL_TRUE;
 127 }
 128
 129
 130 /**
 131  * Map a texture image and return the address for a particular 2D face/slice/
 132  * layer.  The stImage indicates the cube face and mipmap level.  The slice
 133  * of the 3D texture is passed in 'zoffset'.
 134  * \param usage  one of the PIPE_TRANSFER_x values
 135  * \param x, y, w, h  the region of interest of the 2D image.
 136  * \return address of mapping or NULL if any error
 137  */
 138 GLubyte *
 139 st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
 140                      GLuint zoffset, enum pipe_transfer_usage usage,
 141                      GLuint x, GLuint y, GLuint w, GLuint h)
 142 {
 143    struct pipe_context *pipe = st->pipe;
 144    struct pipe_resource *pt = stImage->pt;
 145
 146    DBG("%s \n", __FUNCTION__);
 147
 148    stImage->transfer = pipe_get_transfer(st->pipe, pt, stImage->level,
 149                                          stImage->face + zoffset,
 150                                          usage, x, y, w, h);
 151
 152    if (stImage->transfer)
 153       return pipe_transfer_map(pipe, stImage->transfer);
 154    else
 155       return NULL;
 156 }
 157
 158
 159 void
 160 st_texture_image_unmap(struct st_context *st,
 161                        struct st_texture_image *stImage)
 162 {
 163    struct pipe_context *pipe = st->pipe;
 164
 165    DBG("%s\n", __FUNCTION__);
 166
 167    pipe_transfer_unmap(pipe, stImage->transfer);
 168
 169    pipe->transfer_destroy(pipe, stImage->transfer);
 170 }
 171
 172
 173
 174 /**
 175  * Upload data to a rectangular sub-region.  Lots of choices how to do this:
 176  *
 177  * - memcpy by span to current destination
 178  * - upload data as new buffer and blit
 179  *
 180  * Currently always memcpy.
 181  */
 182 static void
 183 st_surface_data(struct pipe_context *pipe,
 184                 struct pipe_transfer *dst,
 185                 unsigned dstx, unsigned dsty,
 186                 const void *src, unsigned src_stride,
 187                 unsigned srcx, unsigned srcy, unsigned width, unsigned height)
 188 {
 189    void *map = pipe_transfer_map(pipe, dst);
 190
 191    assert(dst->resource);
 192    util_copy_rect(map,
 193                   dst->resource->format,
 194                   dst->stride,
 195                   dstx, dsty,
 196                   width, height,
 197                   src, src_stride,
 198                   srcx, srcy);
 199
 200    pipe_transfer_unmap(pipe, dst);
 201 }
 202
 203
 204 /* Upload data for a particular image.
 205  */
 206 void
 207 st_texture_image_data(struct st_context *st,
 208                       struct pipe_resource *dst,
 209                       GLuint face,
 210                       GLuint level,
 211                       void *src,
 212                       GLuint src_row_stride, GLuint src_image_stride)
 213 {
 214    struct pipe_context *pipe = st->pipe;
 215    GLuint depth = u_minify(dst->depth0, level);
 216    GLuint i;
 217    const GLubyte *srcUB = src;
 218    struct pipe_transfer *dst_transfer;
 219
 220    DBG("%s\n", __FUNCTION__);
 221
 222    for (i = 0; i < depth; i++) {
 223       dst_transfer = pipe_get_transfer(st->pipe, dst, level, face + i,
 224                                        PIPE_TRANSFER_WRITE, 0, 0,
 225                                        u_minify(dst->width0, level),
 226                                        u_minify(dst->height0, level));
 227
 228       st_surface_data(pipe, dst_transfer,
 229                       0, 0,                             /* dstx, dsty */
 230                       srcUB,
 231                       src_row_stride,
 232                       0, 0,                             /* source x, y */
 233                       u_minify(dst->width0, level),
 234                       u_minify(dst->height0, level));    /* width, height */
 235
 236       pipe->transfer_destroy(pipe, dst_transfer);
 237
 238       srcUB += src_image_stride;
 239    }
 240 }
 241
 242
 243 /**
 244  * For debug only: get/print center pixel in the src resource.
 245  */
 246 static void
 247 print_center_pixel(struct pipe_context *pipe, struct pipe_resource *src)
 248 {
 249    struct pipe_transfer *xfer;
 250    struct pipe_box region;
 251    ubyte *map;
 252
 253    region.x = src->width0 / 2;
 254    region.y = src->height0 / 2;
 255    region.z = 0;
 256    region.width = 1;
 257    region.height = 1;
 258    region.depth = 1;
 259
 260    xfer = pipe->get_transfer(pipe, src, 0, PIPE_TRANSFER_READ, &region);
 261    map = pipe->transfer_map(pipe, xfer);
 262
 263    printf("center pixel: %d %d %d %d\n", map[0], map[1], map[2], map[3]);
 264
 265    pipe->transfer_unmap(pipe, xfer);
 266    pipe->transfer_destroy(pipe, xfer);
 267 }
 268
 269
 270 /**
 271  * Copy the image at level=0 in 'src' to the 'dst' resource at 'dstLevel'.
 272  * This is used to copy mipmap images from one texture buffer to another.
 273  * This typically happens when our initial guess at the total texture size
 274  * is incorrect (see the guess_and_alloc_texture() function).
 275  */
 276 void
 277 st_texture_image_copy(struct pipe_context *pipe,
 278                       struct pipe_resource *dst, GLuint dstLevel,
 279                       struct pipe_resource *src, GLuint srcLevel,
 280                       GLuint face)
 281 {
 282    GLuint width = u_minify(dst->width0, dstLevel);
 283    GLuint height = u_minify(dst->height0, dstLevel);
 284    GLuint depth = u_minify(dst->depth0, dstLevel);
 285    struct pipe_box src_box;
 286    GLuint i;
 287
 288    assert(u_minify(src->width0, srcLevel) == width);
 289    assert(u_minify(src->height0, srcLevel) == height);
 290    assert(u_minify(src->depth0, srcLevel) == depth);
 291
 292    src_box.x = 0;
 293    src_box.y = 0;
 294    src_box.width = width;
 295    src_box.height = height;
 296    src_box.depth = 1;
 297    /* Loop over 3D image slices */
 298    /* could (and probably should) use "true" 3d box here -
 299       but drivers can't quite handle it yet */
 300    for (i = face; i < face + depth; i++) {
 301       src_box.z = i;
 302
 303       if (0)  {
 304          print_center_pixel(pipe, src);
 305       }
 306
 307       pipe->resource_copy_region(pipe,
 308                                  dst,
 309                                  dstLevel,
 310                                  0, 0, i,/* destX, Y, Z */
 311                                  src,
 312                                  srcLevel,
 313                                  &src_box);
 314    }
 315 }
 316