src/mesa/state_tracker/st_texture.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 VMware, Inc.
   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 VMWARE 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 #include "util/u_memory.h"
  44
  45
  46 #define DBG if(0) printf
  47
  48
  49 /**
  50  * Allocate a new pipe_resource object
  51  * width0, height0, depth0 are the dimensions of the level 0 image
  52  * (the highest resolution).  last_level indicates how many mipmap levels
  53  * to allocate storage for.  For non-mipmapped textures, this will be zero.
  54  */
  55 struct pipe_resource *
  56 st_texture_create(struct st_context *st,
  57                   enum pipe_texture_target target,
  58                   enum pipe_format format,
  59                   GLuint last_level,
  60                   GLuint width0,
  61                   GLuint height0,
  62                   GLuint depth0,
  63                   GLuint layers,
  64                   GLuint nr_samples,
  65                   GLuint bind )
  66 {
  67    struct pipe_resource pt, *newtex;
  68    struct pipe_screen *screen = st->pipe->screen;
  69
  70    assert(target < PIPE_MAX_TEXTURE_TYPES);
  71    assert(width0 > 0);
  72    assert(height0 > 0);
  73    assert(depth0 > 0);
  74    if (target == PIPE_TEXTURE_CUBE)
  75       assert(layers == 6);
  76
  77    DBG("%s target %d format %s last_level %d\n", __func__,
  78        (int) target, util_format_name(format), last_level);
  79
  80    assert(format);
  81    assert(screen->is_format_supported(screen, format, target, 0,
  82                                       PIPE_BIND_SAMPLER_VIEW));
  83
  84    memset(&pt, 0, sizeof(pt));
  85    pt.target = target;
  86    pt.format = format;
  87    pt.last_level = last_level;
  88    pt.width0 = width0;
  89    pt.height0 = height0;
  90    pt.depth0 = depth0;
  91    pt.array_size = layers;
  92    pt.usage = PIPE_USAGE_DEFAULT;
  93    pt.bind = bind;
  94    /* only set this for OpenGL textures, not renderbuffers */
  95    pt.flags = PIPE_RESOURCE_FLAG_TEXTURING_MORE_LIKELY;
  96    pt.nr_samples = nr_samples;
  97
  98    newtex = screen->resource_create(screen, &pt);
  99
 100    assert(!newtex || pipe_is_referenced(&newtex->reference));
 101
 102    return newtex;
 103 }
 104
 105
 106 /**
 107  * In OpenGL the number of 1D array texture layers is the "height" and
 108  * the number of 2D array texture layers is the "depth".  In Gallium the
 109  * number of layers in an array texture is a separate 'array_size' field.
 110  * This function converts dimensions from the former to the later.
 111  */
 112 void
 113 st_gl_texture_dims_to_pipe_dims(GLenum texture,
 114                                 GLuint widthIn,
 115                                 GLuint heightIn,
 116                                 GLuint depthIn,
 117                                 GLuint *widthOut,
 118                                 GLuint *heightOut,
 119                                 GLuint *depthOut,
 120                                 GLuint *layersOut)
 121 {
 122    switch (texture) {
 123    case GL_TEXTURE_1D:
 124    case GL_PROXY_TEXTURE_1D:
 125       assert(heightIn == 1);
 126       assert(depthIn == 1);
 127       *widthOut = widthIn;
 128       *heightOut = 1;
 129       *depthOut = 1;
 130       *layersOut = 1;
 131       break;
 132    case GL_TEXTURE_1D_ARRAY:
 133    case GL_PROXY_TEXTURE_1D_ARRAY:
 134       assert(depthIn == 1);
 135       *widthOut = widthIn;
 136       *heightOut = 1;
 137       *depthOut = 1;
 138       *layersOut = heightIn;
 139       break;
 140    case GL_TEXTURE_2D:
 141    case GL_PROXY_TEXTURE_2D:
 142    case GL_TEXTURE_RECTANGLE:
 143    case GL_PROXY_TEXTURE_RECTANGLE:
 144    case GL_TEXTURE_EXTERNAL_OES:
 145    case GL_PROXY_TEXTURE_2D_MULTISAMPLE:
 146    case GL_TEXTURE_2D_MULTISAMPLE:
 147       assert(depthIn == 1);
 148       *widthOut = widthIn;
 149       *heightOut = heightIn;
 150       *depthOut = 1;
 151       *layersOut = 1;
 152       break;
 153    case GL_TEXTURE_CUBE_MAP:
 154    case GL_PROXY_TEXTURE_CUBE_MAP:
 155    case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
 156    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
 157    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
 158    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
 159    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
 160    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
 161       assert(depthIn == 1);
 162       *widthOut = widthIn;
 163       *heightOut = heightIn;
 164       *depthOut = 1;
 165       *layersOut = 6;
 166       break;
 167    case GL_TEXTURE_2D_ARRAY:
 168    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
 169    case GL_PROXY_TEXTURE_2D_ARRAY:
 170    case GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY:
 171       *widthOut = widthIn;
 172       *heightOut = heightIn;
 173       *depthOut = 1;
 174       *layersOut = depthIn;
 175       break;
 176    case GL_TEXTURE_CUBE_MAP_ARRAY:
 177    case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
 178       *widthOut = widthIn;
 179       *heightOut = heightIn;
 180       *depthOut = 1;
 181       *layersOut = util_align_npot(depthIn, 6);
 182       break;
 183    default:
 184       assert(0 && "Unexpected texture in st_gl_texture_dims_to_pipe_dims()");
 185       /* fall-through */
 186    case GL_TEXTURE_3D:
 187    case GL_PROXY_TEXTURE_3D:
 188       *widthOut = widthIn;
 189       *heightOut = heightIn;
 190       *depthOut = depthIn;
 191       *layersOut = 1;
 192       break;
 193    }
 194 }
 195
 196
 197 /**
 198  * Check if a texture image can be pulled into a unified mipmap texture.
 199  */
 200 GLboolean
 201 st_texture_match_image(struct st_context *st,
 202                        const struct pipe_resource *pt,
 203                        const struct gl_texture_image *image)
 204 {
 205    GLuint ptWidth, ptHeight, ptDepth, ptLayers;
 206
 207    /* Images with borders are never pulled into mipmap textures.
 208     */
 209    if (image->Border)
 210       return GL_FALSE;
 211
 212    /* Check if this image's format matches the established texture's format.
 213     */
 214    if (st_mesa_format_to_pipe_format(st, image->TexFormat) != pt->format)
 215       return GL_FALSE;
 216
 217    st_gl_texture_dims_to_pipe_dims(image->TexObject->Target,
 218                                    image->Width, image->Height, image->Depth,
 219                                    &ptWidth, &ptHeight, &ptDepth, &ptLayers);
 220
 221    /* Test if this image's size matches what's expected in the
 222     * established texture.
 223     */
 224    if (ptWidth != u_minify(pt->width0, image->Level) ||
 225        ptHeight != u_minify(pt->height0, image->Level) ||
 226        ptDepth != u_minify(pt->depth0, image->Level) ||
 227        ptLayers != pt->array_size)
 228       return GL_FALSE;
 229
 230    if (image->Level > pt->last_level)
 231       return GL_FALSE;
 232
 233    return GL_TRUE;
 234 }
 235
 236
 237 /**
 238  * Map a texture image and return the address for a particular 2D face/slice/
 239  * layer.  The stImage indicates the cube face and mipmap level.  The slice
 240  * of the 3D texture is passed in 'zoffset'.
 241  * \param usage  one of the PIPE_TRANSFER_x values
 242  * \param x, y, w, h  the region of interest of the 2D image.
 243  * \return address of mapping or NULL if any error
 244  */
 245 GLubyte *
 246 st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
 247                      enum pipe_transfer_usage usage,
 248                      GLuint x, GLuint y, GLuint z,
 249                      GLuint w, GLuint h, GLuint d,
 250                      struct pipe_transfer **transfer)
 251 {
 252    struct st_texture_object *stObj =
 253       st_texture_object(stImage->base.TexObject);
 254    GLuint level;
 255    void *map;
 256
 257    DBG("%s \n", __func__);
 258
 259    if (!stImage->pt)
 260       return NULL;
 261
 262    if (stObj->pt != stImage->pt)
 263       level = 0;
 264    else
 265       level = stImage->base.Level;
 266
 267    if (stObj->base.Immutable) {
 268       level += stObj->base.MinLevel;
 269       z += stObj->base.MinLayer;
 270       if (stObj->pt->array_size > 1)
 271          d = MIN2(d, stObj->base.NumLayers);
 272    }
 273
 274    z += stImage->base.Face;
 275
 276    map = pipe_transfer_map_3d(st->pipe, stImage->pt, level, usage,
 277                               x, y, z, w, h, d, transfer);
 278    if (map) {
 279       /* Enlarge the transfer array if it's not large enough. */
 280       if (z >= stImage->num_transfers) {
 281          unsigned new_size = z + 1;
 282
 283          stImage->transfer = realloc(stImage->transfer,
 284                      new_size * sizeof(struct st_texture_image_transfer));
 285          memset(&stImage->transfer[stImage->num_transfers], 0,
 286                 (new_size - stImage->num_transfers) *
 287                 sizeof(struct st_texture_image_transfer));
 288          stImage->num_transfers = new_size;
 289       }
 290
 291       assert(!stImage->transfer[z].transfer);
 292       stImage->transfer[z].transfer = *transfer;
 293    }
 294    return map;
 295 }
 296
 297
 298 void
 299 st_texture_image_unmap(struct st_context *st,
 300                        struct st_texture_image *stImage, unsigned slice)
 301 {
 302    struct pipe_context *pipe = st->pipe;
 303    struct st_texture_object *stObj =
 304       st_texture_object(stImage->base.TexObject);
 305    struct pipe_transfer **transfer;
 306
 307    if (stObj->base.Immutable)
 308       slice += stObj->base.MinLayer;
 309    transfer = &stImage->transfer[slice + stImage->base.Face].transfer;
 310
 311    DBG("%s\n", __func__);
 312
 313    pipe_transfer_unmap(pipe, *transfer);
 314    *transfer = NULL;
 315 }
 316
 317 /**
 318  * For debug only: get/print center pixel in the src resource.
 319  */
 320 static void
 321 print_center_pixel(struct pipe_context *pipe, struct pipe_resource *src)
 322 {
 323    struct pipe_transfer *xfer;
 324    struct pipe_box region;
 325    ubyte *map;
 326
 327    region.x = src->width0 / 2;
 328    region.y = src->height0 / 2;
 329    region.z = 0;
 330    region.width = 1;
 331    region.height = 1;
 332    region.depth = 1;
 333
 334    map = pipe->transfer_map(pipe, src, 0, PIPE_TRANSFER_READ, &region, &xfer);
 335
 336    printf("center pixel: %d %d %d %d\n", map[0], map[1], map[2], map[3]);
 337
 338    pipe->transfer_unmap(pipe, xfer);
 339 }
 340
 341
 342 /**
 343  * Copy the image at level=0 in 'src' to the 'dst' resource at 'dstLevel'.
 344  * This is used to copy mipmap images from one texture buffer to another.
 345  * This typically happens when our initial guess at the total texture size
 346  * is incorrect (see the guess_and_alloc_texture() function).
 347  */
 348 void
 349 st_texture_image_copy(struct pipe_context *pipe,
 350                       struct pipe_resource *dst, GLuint dstLevel,
 351                       struct pipe_resource *src, GLuint srcLevel,
 352                       GLuint face)
 353 {
 354    GLuint width = u_minify(dst->width0, dstLevel);
 355    GLuint height = u_minify(dst->height0, dstLevel);
 356    GLuint depth = u_minify(dst->depth0, dstLevel);
 357    struct pipe_box src_box;
 358    GLuint i;
 359
 360    if (u_minify(src->width0, srcLevel) != width ||
 361        u_minify(src->height0, srcLevel) != height ||
 362        u_minify(src->depth0, srcLevel) != depth) {
 363       /* The source image size doesn't match the destination image size.
 364        * This can happen in some degenerate situations such as rendering to a
 365        * cube map face which was set up with mismatched texture sizes.
 366        */
 367       return;
 368    }
 369
 370    src_box.x = 0;
 371    src_box.y = 0;
 372    src_box.width = width;
 373    src_box.height = height;
 374    src_box.depth = 1;
 375
 376    if (src->target == PIPE_TEXTURE_1D_ARRAY ||
 377        src->target == PIPE_TEXTURE_2D_ARRAY ||
 378        src->target == PIPE_TEXTURE_CUBE_ARRAY) {
 379       face = 0;
 380       depth = src->array_size;
 381    }
 382
 383    /* Loop over 3D image slices */
 384    /* could (and probably should) use "true" 3d box here -
 385       but drivers can't quite handle it yet */
 386    for (i = face; i < face + depth; i++) {
 387       src_box.z = i;
 388
 389       if (0)  {
 390          print_center_pixel(pipe, src);
 391       }
 392
 393       pipe->resource_copy_region(pipe,
 394                                  dst,
 395                                  dstLevel,
 396                                  0, 0, i,/* destX, Y, Z */
 397                                  src,
 398                                  srcLevel,
 399                                  &src_box);
 400    }
 401 }
 402
 403
 404 struct pipe_resource *
 405 st_create_color_map_texture(struct gl_context *ctx)
 406 {
 407    struct st_context *st = st_context(ctx);
 408    struct pipe_resource *pt;
 409    enum pipe_format format;
 410    const uint texSize = 256; /* simple, and usually perfect */
 411
 412    /* find an RGBA texture format */
 413    format = st_choose_format(st, GL_RGBA, GL_NONE, GL_NONE,
 414                              PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW,
 415                              FALSE);
 416
 417    /* create texture for color map/table */
 418    pt = st_texture_create(st, PIPE_TEXTURE_2D, format, 0,
 419                           texSize, texSize, 1, 1, 0, PIPE_BIND_SAMPLER_VIEW);
 420    return pt;
 421 }