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    case GL_TEXTURE_CUBE_MAP_ARRAY:
 169    case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
 170       *widthOut = widthIn;
 171       *heightOut = heightIn;
 172       *depthOut = 1;
 173       *layersOut = depthIn;
 174       break;
 175    default:
 176       assert(0 && "Unexpected texture in st_gl_texture_dims_to_pipe_dims()");
 177       /* fall-through */
 178    case GL_TEXTURE_3D:
 179    case GL_PROXY_TEXTURE_3D:
 180       *widthOut = widthIn;
 181       *heightOut = heightIn;
 182       *depthOut = depthIn;
 183       *layersOut = 1;
 184       break;
 185    }
 186 }
 187
 188
 189 /**
 190  * Check if a texture image can be pulled into a unified mipmap texture.
 191  */
 192 GLboolean
 193 st_texture_match_image(const struct pipe_resource *pt,
 194                        const struct gl_texture_image *image)
 195 {
 196    GLuint ptWidth, ptHeight, ptDepth, ptLayers;
 197
 198    /* Images with borders are never pulled into mipmap textures.
 199     */
 200    if (image->Border)
 201       return GL_FALSE;
 202
 203    /* Check if this image's format matches the established texture's format.
 204     */
 205    if (st_mesa_format_to_pipe_format(image->TexFormat) != pt->format)
 206       return GL_FALSE;
 207
 208    st_gl_texture_dims_to_pipe_dims(image->TexObject->Target,
 209                                    image->Width, image->Height, image->Depth,
 210                                    &ptWidth, &ptHeight, &ptDepth, &ptLayers);
 211
 212    /* Test if this image's size matches what's expected in the
 213     * established texture.
 214     */
 215    if (ptWidth != u_minify(pt->width0, image->Level) ||
 216        ptHeight != u_minify(pt->height0, image->Level) ||
 217        ptDepth != u_minify(pt->depth0, image->Level) ||
 218        ptLayers != pt->array_size)
 219       return GL_FALSE;
 220
 221    return GL_TRUE;
 222 }
 223
 224
 225 /**
 226  * Map a texture image and return the address for a particular 2D face/slice/
 227  * layer.  The stImage indicates the cube face and mipmap level.  The slice
 228  * of the 3D texture is passed in 'zoffset'.
 229  * \param usage  one of the PIPE_TRANSFER_x values
 230  * \param x, y, w, h  the region of interest of the 2D image.
 231  * \return address of mapping or NULL if any error
 232  */
 233 GLubyte *
 234 st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
 235                      GLuint zoffset, enum pipe_transfer_usage usage,
 236                      GLuint x, GLuint y, GLuint w, GLuint h)
 237 {
 238    struct st_texture_object *stObj =
 239       st_texture_object(stImage->base.TexObject);
 240    GLuint level;
 241
 242    DBG("%s \n", __FUNCTION__);
 243
 244    if (!stImage->pt)
 245       return NULL;
 246
 247    if (stObj->pt != stImage->pt)
 248       level = 0;
 249    else
 250       level = stImage->base.Level;
 251
 252    return pipe_transfer_map(st->pipe, stImage->pt, level,
 253                             stImage->base.Face + zoffset,
 254                             usage, x, y, w, h, &stImage->transfer);
 255 }
 256
 257
 258 void
 259 st_texture_image_unmap(struct st_context *st,
 260                        struct st_texture_image *stImage)
 261 {
 262    struct pipe_context *pipe = st->pipe;
 263
 264    DBG("%s\n", __FUNCTION__);
 265
 266    pipe_transfer_unmap(pipe, stImage->transfer);
 267    stImage->transfer = NULL;
 268 }
 269
 270
 271 /* Upload data for a particular image.
 272  */
 273 void
 274 st_texture_image_data(struct st_context *st,
 275                       struct pipe_resource *dst,
 276                       GLuint face,
 277                       GLuint level,
 278                       void *src,
 279                       GLuint src_row_stride, GLuint src_image_stride)
 280 {
 281    struct pipe_context *pipe = st->pipe;
 282    GLuint i;
 283    const GLubyte *srcUB = src;
 284    GLuint layers;
 285
 286    if (dst->target == PIPE_TEXTURE_1D_ARRAY ||
 287        dst->target == PIPE_TEXTURE_2D_ARRAY ||
 288        dst->target == PIPE_TEXTURE_CUBE_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    map = pipe->transfer_map(pipe, src, 0, PIPE_TRANSFER_READ, &region, &xfer);
 328
 329    printf("center pixel: %d %d %d %d\n", map[0], map[1], map[2], map[3]);
 330
 331    pipe->transfer_unmap(pipe, xfer);
 332 }
 333
 334
 335 /**
 336  * Copy the image at level=0 in 'src' to the 'dst' resource at 'dstLevel'.
 337  * This is used to copy mipmap images from one texture buffer to another.
 338  * This typically happens when our initial guess at the total texture size
 339  * is incorrect (see the guess_and_alloc_texture() function).
 340  */
 341 void
 342 st_texture_image_copy(struct pipe_context *pipe,
 343                       struct pipe_resource *dst, GLuint dstLevel,
 344                       struct pipe_resource *src, GLuint srcLevel,
 345                       GLuint face)
 346 {
 347    GLuint width = u_minify(dst->width0, dstLevel);
 348    GLuint height = u_minify(dst->height0, dstLevel);
 349    GLuint depth = u_minify(dst->depth0, dstLevel);
 350    struct pipe_box src_box;
 351    GLuint i;
 352
 353    if (u_minify(src->width0, srcLevel) != width ||
 354        u_minify(src->height0, srcLevel) != height ||
 355        u_minify(src->depth0, srcLevel) != depth) {
 356       /* The source image size doesn't match the destination image size.
 357        * This can happen in some degenerate situations such as rendering to a
 358        * cube map face which was set up with mismatched texture sizes.
 359        */
 360       return;
 361    }
 362
 363    src_box.x = 0;
 364    src_box.y = 0;
 365    src_box.width = width;
 366    src_box.height = height;
 367    src_box.depth = 1;
 368    /* Loop over 3D image slices */
 369    /* could (and probably should) use "true" 3d box here -
 370       but drivers can't quite handle it yet */
 371    for (i = face; i < face + depth; i++) {
 372       src_box.z = i;
 373
 374       if (0)  {
 375          print_center_pixel(pipe, src);
 376       }
 377
 378       pipe->resource_copy_region(pipe,
 379                                  dst,
 380                                  dstLevel,
 381                                  0, 0, i,/* destX, Y, Z */
 382                                  src,
 383                                  srcLevel,
 384                                  &src_box);
 385    }
 386 }
 387
 388
 389 struct pipe_resource *
 390 st_create_color_map_texture(struct gl_context *ctx)
 391 {
 392    struct st_context *st = st_context(ctx);
 393    struct pipe_context *pipe = st->pipe;
 394    struct pipe_resource *pt;
 395    enum pipe_format format;
 396    const uint texSize = 256; /* simple, and usually perfect */
 397
 398    /* find an RGBA texture format */
 399    format = st_choose_format(pipe->screen, GL_RGBA, GL_NONE, GL_NONE,
 400                              PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW);
 401
 402    /* create texture for color map/table */
 403    pt = st_texture_create(st, PIPE_TEXTURE_2D, format, 0,
 404                           texSize, texSize, 1, 1, PIPE_BIND_SAMPLER_VIEW);
 405    return pt;
 406 }
 407