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 layers,
  63                   GLuint bind )
  64 {
  65    struct pipe_resource pt, *newtex;
  66    struct pipe_screen *screen = st->pipe->screen;
  67
  68    assert(target < PIPE_MAX_TEXTURE_TYPES);
  69    assert(width0 > 0);
  70    assert(height0 > 0);
  71    assert(depth0 > 0);
  72    if (target == PIPE_TEXTURE_CUBE)
  73       assert(layers == 6);
  74
  75    DBG("%s target %d format %s last_level %d\n", __FUNCTION__,
  76        (int) target, util_format_name(format), last_level);
  77
  78    assert(format);
  79    assert(screen->is_format_supported(screen, format, target, 0,
  80                                       PIPE_BIND_SAMPLER_VIEW));
  81
  82    memset(&pt, 0, sizeof(pt));
  83    pt.target = target;
  84    pt.format = format;
  85    pt.last_level = last_level;
  86    pt.width0 = width0;
  87    pt.height0 = height0;
  88    pt.depth0 = depth0;
  89    pt.array_size = (target == PIPE_TEXTURE_CUBE ? 6 : layers);
  90    pt.usage = PIPE_USAGE_DEFAULT;
  91    pt.bind = bind;
  92    pt.flags = 0;
  93
  94    newtex = screen->resource_create(screen, &pt);
  95
  96    assert(!newtex || pipe_is_referenced(&newtex->reference));
  97
  98    return newtex;
  99 }
 100
 101
 102 /**
 103  * In OpenGL the number of 1D array texture layers is the "height" and
 104  * the number of 2D array texture layers is the "depth".  In Gallium the
 105  * number of layers in an array texture is a separate 'array_size' field.
 106  * This function converts dimensions from the former to the later.
 107  */
 108 void
 109 st_gl_texture_dims_to_pipe_dims(GLenum texture,
 110                                 GLuint widthIn,
 111                                 GLuint heightIn,
 112                                 GLuint depthIn,
 113                                 GLuint *widthOut,
 114                                 GLuint *heightOut,
 115                                 GLuint *depthOut,
 116                                 GLuint *layersOut)
 117 {
 118    switch (texture) {
 119    case GL_TEXTURE_1D:
 120    case GL_PROXY_TEXTURE_1D:
 121       assert(heightIn == 1);
 122       assert(depthIn == 1);
 123       *widthOut = widthIn;
 124       *heightOut = 1;
 125       *depthOut = 1;
 126       *layersOut = 1;
 127       break;
 128    case GL_TEXTURE_1D_ARRAY:
 129    case GL_PROXY_TEXTURE_1D_ARRAY:
 130       assert(depthIn == 1);
 131       *widthOut = widthIn;
 132       *heightOut = 1;
 133       *depthOut = 1;
 134       *layersOut = heightIn;
 135       break;
 136    case GL_TEXTURE_2D:
 137    case GL_PROXY_TEXTURE_2D:
 138    case GL_TEXTURE_RECTANGLE:
 139    case GL_PROXY_TEXTURE_RECTANGLE:
 140    case GL_TEXTURE_EXTERNAL_OES:
 141       assert(depthIn == 1);
 142       *widthOut = widthIn;
 143       *heightOut = heightIn;
 144       *depthOut = 1;
 145       *layersOut = 1;
 146       break;
 147    case GL_TEXTURE_CUBE_MAP:
 148    case GL_PROXY_TEXTURE_CUBE_MAP:
 149    case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
 150    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
 151    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
 152    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
 153    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
 154    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
 155       assert(depthIn == 1);
 156       *widthOut = widthIn;
 157       *heightOut = heightIn;
 158       *depthOut = 1;
 159       *layersOut = 6;
 160       break;
 161    case GL_TEXTURE_2D_ARRAY:
 162    case GL_PROXY_TEXTURE_2D_ARRAY:
 163       *widthOut = widthIn;
 164       *heightOut = heightIn;
 165       *depthOut = 1;
 166       *layersOut = depthIn;
 167       break;
 168    default:
 169       assert(0 && "Unexpected texture in st_gl_texture_dims_to_pipe_dims()");
 170       /* fall-through */
 171    case GL_TEXTURE_3D:
 172    case GL_PROXY_TEXTURE_3D:
 173       *widthOut = widthIn;
 174       *heightOut = heightIn;
 175       *depthOut = depthIn;
 176       *layersOut = 1;
 177       break;
 178    }
 179 }
 180
 181
 182 /**
 183  * Check if a texture image can be pulled into a unified mipmap texture.
 184  */
 185 GLboolean
 186 st_texture_match_image(const struct pipe_resource *pt,
 187                        const struct gl_texture_image *image)
 188 {
 189    GLuint ptWidth, ptHeight, ptDepth, ptLayers;
 190
 191    /* Images with borders are never pulled into mipmap textures.
 192     */
 193    if (image->Border)
 194       return GL_FALSE;
 195
 196    /* Check if this image's format matches the established texture's format.
 197     */
 198    if (st_mesa_format_to_pipe_format(image->TexFormat) != pt->format)
 199       return GL_FALSE;
 200
 201    st_gl_texture_dims_to_pipe_dims(image->TexObject->Target,
 202                                    image->Width, image->Height, image->Depth,
 203                                    &ptWidth, &ptHeight, &ptDepth, &ptLayers);
 204
 205    /* Test if this image's size matches what's expected in the
 206     * established texture.
 207     */
 208    if (ptWidth != u_minify(pt->width0, image->Level) ||
 209        ptHeight != u_minify(pt->height0, image->Level) ||
 210        ptDepth != u_minify(pt->depth0, image->Level) ||
 211        ptLayers != pt->array_size)
 212       return GL_FALSE;
 213
 214    return GL_TRUE;
 215 }
 216
 217
 218 /**
 219  * Map a texture image and return the address for a particular 2D face/slice/
 220  * layer.  The stImage indicates the cube face and mipmap level.  The slice
 221  * of the 3D texture is passed in 'zoffset'.
 222  * \param usage  one of the PIPE_TRANSFER_x values
 223  * \param x, y, w, h  the region of interest of the 2D image.
 224  * \return address of mapping or NULL if any error
 225  */
 226 GLubyte *
 227 st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
 228                      GLuint zoffset, enum pipe_transfer_usage usage,
 229                      GLuint x, GLuint y, GLuint w, GLuint h)
 230 {
 231    struct st_texture_object *stObj =
 232       st_texture_object(stImage->base.TexObject);
 233    struct pipe_context *pipe = st->pipe;
 234    GLuint level;
 235
 236    DBG("%s \n", __FUNCTION__);
 237
 238    if (!stImage->pt)
 239       return NULL;
 240
 241    if (stObj->pt != stImage->pt)
 242       level = 0;
 243    else
 244       level = stImage->base.Level;
 245
 246    stImage->transfer = pipe_get_transfer(st->pipe, stImage->pt, level,
 247                                          stImage->base.Face + zoffset,
 248                                          usage, x, y, w, h);
 249
 250    if (stImage->transfer)
 251       return pipe_transfer_map(pipe, stImage->transfer);
 252    else
 253       return NULL;
 254 }
 255
 256
 257 void
 258 st_texture_image_unmap(struct st_context *st,
 259                        struct st_texture_image *stImage)
 260 {
 261    struct pipe_context *pipe = st->pipe;
 262
 263    DBG("%s\n", __FUNCTION__);
 264
 265    pipe_transfer_unmap(pipe, stImage->transfer);
 266
 267    pipe->transfer_destroy(pipe, stImage->transfer);
 268    stImage->transfer = NULL;
 269 }
 270
 271
 272 /* Upload data for a particular image.
 273  */
 274 void
 275 st_texture_image_data(struct st_context *st,
 276                       struct pipe_resource *dst,
 277                       GLuint face,
 278                       GLuint level,
 279                       void *src,
 280                       GLuint src_row_stride, GLuint src_image_stride)
 281 {
 282    struct pipe_context *pipe = st->pipe;
 283    GLuint i;
 284    const GLubyte *srcUB = src;
 285    GLuint layers;
 286
 287    if (dst->target == PIPE_TEXTURE_1D_ARRAY ||
 288        dst->target == PIPE_TEXTURE_2D_ARRAY)
 289       layers = dst->array_size;
 290    else
 291       layers = u_minify(dst->depth0, level);
 292
 293    DBG("%s\n", __FUNCTION__);
 294
 295    for (i = 0; i < layers; i++) {
 296       struct pipe_box box;
 297       u_box_2d_zslice(0, 0, face + i,
 298                       u_minify(dst->width0, level),
 299                       u_minify(dst->height0, level),
 300                       &box);
 301
 302       pipe->transfer_inline_write(pipe, dst, level, PIPE_TRANSFER_WRITE,
 303                                   &box, srcUB, src_row_stride, 0);
 304
 305       srcUB += src_image_stride;
 306    }
 307 }
 308
 309
 310 /**
 311  * For debug only: get/print center pixel in the src resource.
 312  */
 313 static void
 314 print_center_pixel(struct pipe_context *pipe, struct pipe_resource *src)
 315 {
 316    struct pipe_transfer *xfer;
 317    struct pipe_box region;
 318    ubyte *map;
 319
 320    region.x = src->width0 / 2;
 321    region.y = src->height0 / 2;
 322    region.z = 0;
 323    region.width = 1;
 324    region.height = 1;
 325    region.depth = 1;
 326
 327    xfer = pipe->get_transfer(pipe, src, 0, PIPE_TRANSFER_READ, &region);
 328    map = pipe->transfer_map(pipe, xfer);
 329
 330    printf("center pixel: %d %d %d %d\n", map[0], map[1], map[2], map[3]);
 331
 332    pipe->transfer_unmap(pipe, xfer);
 333    pipe->transfer_destroy(pipe, xfer);
 334 }
 335
 336
 337 /**
 338  * Copy the image at level=0 in 'src' to the 'dst' resource at 'dstLevel'.
 339  * This is used to copy mipmap images from one texture buffer to another.
 340  * This typically happens when our initial guess at the total texture size
 341  * is incorrect (see the guess_and_alloc_texture() function).
 342  */
 343 void
 344 st_texture_image_copy(struct pipe_context *pipe,
 345                       struct pipe_resource *dst, GLuint dstLevel,
 346                       struct pipe_resource *src, GLuint srcLevel,
 347                       GLuint face)
 348 {
 349    GLuint width = u_minify(dst->width0, dstLevel);
 350    GLuint height = u_minify(dst->height0, dstLevel);
 351    GLuint depth = u_minify(dst->depth0, dstLevel);
 352    struct pipe_box src_box;
 353    GLuint i;
 354
 355    if (u_minify(src->width0, srcLevel) != width ||
 356        u_minify(src->height0, srcLevel) != height ||
 357        u_minify(src->depth0, srcLevel) != depth) {
 358       /* The source image size doesn't match the destination image size.
 359        * This can happen in some degenerate situations such as rendering to a
 360        * cube map face which was set up with mismatched texture sizes.
 361        */
 362       return;
 363    }
 364
 365    src_box.x = 0;
 366    src_box.y = 0;
 367    src_box.width = width;
 368    src_box.height = height;
 369    src_box.depth = 1;
 370    /* Loop over 3D image slices */
 371    /* could (and probably should) use "true" 3d box here -
 372       but drivers can't quite handle it yet */
 373    for (i = face; i < face + depth; i++) {
 374       src_box.z = i;
 375
 376       if (0)  {
 377          print_center_pixel(pipe, src);
 378       }
 379
 380       pipe->resource_copy_region(pipe,
 381                                  dst,
 382                                  dstLevel,
 383                                  0, 0, i,/* destX, Y, Z */
 384                                  src,
 385                                  srcLevel,
 386                                  &src_box);
 387    }
 388 }
 389
 390
 391 struct pipe_resource *
 392 st_create_color_map_texture(struct gl_context *ctx)
 393 {
 394    struct st_context *st = st_context(ctx);
 395    struct pipe_context *pipe = st->pipe;
 396    struct pipe_resource *pt;
 397    enum pipe_format format;
 398    const uint texSize = 256; /* simple, and usually perfect */
 399
 400    /* find an RGBA texture format */
 401    format = st_choose_format(pipe->screen, GL_RGBA, GL_NONE, GL_NONE,
 402                              PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW);
 403
 404    /* create texture for color map/table */
 405    pt = st_texture_create(st, PIPE_TEXTURE_2D, format, 0,
 406                           texSize, texSize, 1, 1, PIPE_BIND_SAMPLER_VIEW);
 407    return pt;
 408 }
 409