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.usage = PIPE_USAGE_DEFAULT;
  88    pt.bind = bind;
  89    pt.flags = 0;
  90
  91    newtex = screen->resource_create(screen, &pt);
  92
  93    assert(!newtex || pipe_is_referenced(&newtex->reference));
  94
  95    return newtex;
  96 }
  97
  98
  99 /**
 100  * Check if a texture image can be pulled into a unified mipmap texture.
 101  */
 102 GLboolean
 103 st_texture_match_image(const struct pipe_resource *pt,
 104                        const struct gl_texture_image *image,
 105                        GLuint face, GLuint level)
 106 {
 107    /* Images with borders are never pulled into mipmap textures.
 108     */
 109    if (image->Border)
 110       return GL_FALSE;
 111
 112    /* Check if this image's format matches the established texture's format.
 113     */
 114    if (st_mesa_format_to_pipe_format(image->TexFormat) != pt->format)
 115       return GL_FALSE;
 116
 117    /* Test if this image's size matches what's expected in the
 118     * established texture.
 119     */
 120    if (image->Width != u_minify(pt->width0, level) ||
 121        image->Height != u_minify(pt->height0, level) ||
 122        image->Depth != u_minify(pt->depth0, level))
 123       return GL_FALSE;
 124
 125    return GL_TRUE;
 126 }
 127
 128
 129 /**
 130  * Map a texture image and return the address for a particular 2D face/slice/
 131  * layer.  The stImage indicates the cube face and mipmap level.  The slice
 132  * of the 3D texture is passed in 'zoffset'.
 133  * \param usage  one of the PIPE_TRANSFER_x values
 134  * \param x, y, w, h  the region of interest of the 2D image.
 135  * \return address of mapping or NULL if any error
 136  */
 137 GLubyte *
 138 st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
 139                      GLuint zoffset, enum pipe_transfer_usage usage,
 140                      GLuint x, GLuint y, GLuint w, GLuint h)
 141 {
 142    struct pipe_context *pipe = st->pipe;
 143    struct pipe_resource *pt = stImage->pt;
 144
 145    DBG("%s \n", __FUNCTION__);
 146
 147    stImage->transfer = pipe_get_transfer(st->pipe, pt, stImage->face,
 148                                                     stImage->level, zoffset,
 149                                                     usage, x, y, w, h);
 150
 151    if (stImage->transfer)
 152       return pipe_transfer_map(pipe, stImage->transfer);
 153    else
 154       return NULL;
 155 }
 156
 157
 158 void
 159 st_texture_image_unmap(struct st_context *st,
 160                        struct st_texture_image *stImage)
 161 {
 162    struct pipe_context *pipe = st->pipe;
 163
 164    DBG("%s\n", __FUNCTION__);
 165
 166    pipe_transfer_unmap(pipe, stImage->transfer);
 167
 168    pipe->transfer_destroy(pipe, stImage->transfer);
 169 }
 170
 171
 172
 173 /**
 174  * Upload data to a rectangular sub-region.  Lots of choices how to do this:
 175  *
 176  * - memcpy by span to current destination
 177  * - upload data as new buffer and blit
 178  *
 179  * Currently always memcpy.
 180  */
 181 static void
 182 st_surface_data(struct pipe_context *pipe,
 183                 struct pipe_transfer *dst,
 184                 unsigned dstx, unsigned dsty,
 185                 const void *src, unsigned src_stride,
 186                 unsigned srcx, unsigned srcy, unsigned width, unsigned height)
 187 {
 188    void *map = pipe_transfer_map(pipe, dst);
 189
 190    assert(dst->resource);
 191    util_copy_rect(map,
 192                   dst->resource->format,
 193                   dst->stride,
 194                   dstx, dsty,
 195                   width, height,
 196                   src, src_stride,
 197                   srcx, srcy);
 198
 199    pipe_transfer_unmap(pipe, dst);
 200 }
 201
 202
 203 /* Upload data for a particular image.
 204  */
 205 void
 206 st_texture_image_data(struct st_context *st,
 207                       struct pipe_resource *dst,
 208                       GLuint face,
 209                       GLuint level,
 210                       void *src,
 211                       GLuint src_row_stride, GLuint src_image_stride)
 212 {
 213    struct pipe_context *pipe = st->pipe;
 214    GLuint depth = u_minify(dst->depth0, level);
 215    GLuint i;
 216    const GLubyte *srcUB = src;
 217    struct pipe_transfer *dst_transfer;
 218
 219    DBG("%s\n", __FUNCTION__);
 220
 221    for (i = 0; i < depth; i++) {
 222       dst_transfer = pipe_get_transfer(st->pipe, dst, face, level, i,
 223                                                   PIPE_TRANSFER_WRITE, 0, 0,
 224                                                   u_minify(dst->width0, level),
 225                                                   u_minify(dst->height0, level));
 226
 227       st_surface_data(pipe, dst_transfer,
 228                       0, 0,                             /* dstx, dsty */
 229                       srcUB,
 230                       src_row_stride,
 231                       0, 0,                             /* source x, y */
 232                       u_minify(dst->width0, level),
 233                       u_minify(dst->height0, level));      /* width, height */
 234
 235       pipe->transfer_destroy(pipe, dst_transfer);
 236
 237       srcUB += src_image_stride;
 238    }
 239 }
 240
 241
 242 /**
 243  * For debug only: get/print center pixel in the src resource.
 244  */
 245 static void
 246 print_center_pixel(struct pipe_context *pipe, struct pipe_resource *src)
 247 {
 248    struct pipe_subresource rect;
 249    struct pipe_transfer *xfer;
 250    struct pipe_box region;
 251    ubyte *map;
 252
 253    rect.face = 0;
 254    rect.level = 0;
 255
 256    region.x = src->width0 / 2;
 257    region.y = src->height0 / 2;
 258    region.z = 0;
 259    region.width = 1;
 260    region.height = 1;
 261    region.depth = 1;
 262
 263    xfer = pipe->get_transfer(pipe, src, rect, PIPE_TRANSFER_READ, &region);
 264    map = pipe->transfer_map(pipe, xfer);
 265
 266    printf("center pixel: %d %d %d %d\n", map[0], map[1], map[2], map[3]);
 267
 268    pipe->transfer_unmap(pipe, xfer);
 269    pipe->transfer_destroy(pipe, xfer);
 270 }
 271
 272
 273 /**
 274  * Copy the image at level=0 in 'src' to the 'dst' resource at 'dstLevel'.
 275  * This is used to copy mipmap images from one texture buffer to another.
 276  * This typically happens when our initial guess at the total texture size
 277  * is incorrect (see the guess_and_alloc_texture() function).
 278  */
 279 void
 280 st_texture_image_copy(struct pipe_context *pipe,
 281                       struct pipe_resource *dst, GLuint dstLevel,
 282                       struct pipe_resource *src, GLuint srcLevel,
 283                       GLuint face)
 284 {
 285    GLuint width = u_minify(dst->width0, dstLevel);
 286    GLuint height = u_minify(dst->height0, dstLevel);
 287    GLuint depth = u_minify(dst->depth0, dstLevel);
 288    struct pipe_subresource dstsub, srcsub;
 289    GLuint i;
 290
 291    assert(u_minify(src->width0, srcLevel) == width);
 292    assert(u_minify(src->height0, srcLevel) == height);
 293    assert(u_minify(src->depth0, srcLevel) == depth);
 294
 295    dstsub.face = face;
 296    dstsub.level = dstLevel;
 297    srcsub.face = face;
 298    srcsub.level = srcLevel;
 299    /* Loop over 3D image slices */
 300    for (i = 0; i < depth; i++) {
 301
 302       if (0)  {
 303          print_center_pixel(pipe, src);
 304       }
 305
 306       pipe->resource_copy_region(pipe,
 307                                  dst,
 308                                  dstsub,
 309                                  0, 0, i,/* destX, Y, Z */
 310                                  src,
 311                                  srcsub,
 312                                  0, 0, i,/* srcX, Y, Z */
 313                                  width, height);
 314    }
 315 }
 316