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 "st_context.h"
  29 #include "st_format.h"
  30 #include "st_texture.h"
  31 #include "st_cb_fbo.h"
  32 #include "st_inlines.h"
  33 #include "main/enums.h"
  34
  35 #undef Elements  /* fix re-defined macro warning */
  36
  37 #include "pipe/p_state.h"
  38 #include "pipe/p_context.h"
  39 #include "pipe/p_defines.h"
  40 #include "util/u_inlines.h"
  41 #include "util/u_format.h"
  42 #include "util/u_rect.h"
  43 #include "util/u_math.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 bind )
  64 {
  65    struct pipe_resource pt, *newtex;
  66    struct pipe_screen *screen = st->pipe->screen;
  67
  68    assert(target <= PIPE_TEXTURE_CUBE);
  69
  70    DBG("%s target %s format %s last_level %d\n", __FUNCTION__,
  71        _mesa_lookup_enum_by_nr(target),
  72        _mesa_lookup_enum_by_nr(format), last_level);
  73
  74    assert(format);
  75    assert(screen->is_format_supported(screen, format, target, 0,
  76                                       PIPE_BIND_SAMPLER_VIEW, 0));
  77
  78    memset(&pt, 0, sizeof(pt));
  79    pt.target = target;
  80    pt.format = format;
  81    pt.last_level = last_level;
  82    pt.width0 = width0;
  83    pt.height0 = height0;
  84    pt.depth0 = depth0;
  85    pt.usage = PIPE_USAGE_DEFAULT;
  86    pt.bind = bind;
  87    pt.flags = 0;
  88
  89    newtex = screen->resource_create(screen, &pt);
  90
  91    assert(!newtex || pipe_is_referenced(&newtex->reference));
  92
  93    return newtex;
  94 }
  95
  96
  97 /**
  98  * Check if a texture image can be pulled into a unified mipmap texture.
  99  */
 100 GLboolean
 101 st_texture_match_image(const struct pipe_resource *pt,
 102                        const struct gl_texture_image *image,
 103                        GLuint face, GLuint level)
 104 {
 105    /* Images with borders are never pulled into mipmap textures.
 106     */
 107    if (image->Border)
 108       return GL_FALSE;
 109
 110    /* Check if this image's format matches the established texture's format.
 111     */
 112    if (st_mesa_format_to_pipe_format(image->TexFormat) != pt->format)
 113       return GL_FALSE;
 114
 115    /* Test if this image's size matches what's expected in the
 116     * established texture.
 117     */
 118    if (image->Width != u_minify(pt->width0, level) ||
 119        image->Height != u_minify(pt->height0, level) ||
 120        image->Depth != u_minify(pt->depth0, level))
 121       return GL_FALSE;
 122
 123    return GL_TRUE;
 124 }
 125
 126
 127 /**
 128  * Map a texture image and return the address for a particular 2D face/slice/
 129  * layer.  The stImage indicates the cube face and mipmap level.  The slice
 130  * of the 3D texture is passed in 'zoffset'.
 131  * \param usage  one of the PIPE_TRANSFER_x values
 132  * \param x, y, w, h  the region of interest of the 2D image.
 133  * \return address of mapping or NULL if any error
 134  */
 135 GLubyte *
 136 st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
 137                      GLuint zoffset, enum pipe_transfer_usage usage,
 138                      GLuint x, GLuint y, GLuint w, GLuint h)
 139 {
 140    struct pipe_context *pipe = st->pipe;
 141    struct pipe_resource *pt = stImage->pt;
 142
 143    DBG("%s \n", __FUNCTION__);
 144
 145    stImage->transfer = st_no_flush_get_tex_transfer(st, pt, stImage->face,
 146                                                     stImage->level, zoffset,
 147                                                     usage, x, y, w, h);
 148
 149    if (stImage->transfer)
 150       return pipe_transfer_map(pipe, stImage->transfer);
 151    else
 152       return NULL;
 153 }
 154
 155
 156 void
 157 st_texture_image_unmap(struct st_context *st,
 158                        struct st_texture_image *stImage)
 159 {
 160    struct pipe_context *pipe = st->pipe;
 161
 162    DBG("%s\n", __FUNCTION__);
 163
 164    pipe_transfer_unmap(pipe, stImage->transfer);
 165
 166    pipe->transfer_destroy(pipe, stImage->transfer);
 167 }
 168
 169
 170
 171 /**
 172  * Upload data to a rectangular sub-region.  Lots of choices how to do this:
 173  *
 174  * - memcpy by span to current destination
 175  * - upload data as new buffer and blit
 176  *
 177  * Currently always memcpy.
 178  */
 179 static void
 180 st_surface_data(struct pipe_context *pipe,
 181                 struct pipe_transfer *dst,
 182                 unsigned dstx, unsigned dsty,
 183                 const void *src, unsigned src_stride,
 184                 unsigned srcx, unsigned srcy, unsigned width, unsigned height)
 185 {
 186    void *map = pipe_transfer_map(pipe, dst);
 187
 188    assert(dst->resource);
 189    util_copy_rect(map,
 190                   dst->resource->format,
 191                   dst->stride,
 192                   dstx, dsty,
 193                   width, height,
 194                   src, src_stride,
 195                   srcx, srcy);
 196
 197    pipe_transfer_unmap(pipe, dst);
 198 }
 199
 200
 201 /* Upload data for a particular image.
 202  */
 203 void
 204 st_texture_image_data(struct st_context *st,
 205                       struct pipe_resource *dst,
 206                       GLuint face,
 207                       GLuint level,
 208                       void *src,
 209                       GLuint src_row_stride, GLuint src_image_stride)
 210 {
 211    struct pipe_context *pipe = st->pipe;
 212    GLuint depth = u_minify(dst->depth0, level);
 213    GLuint i;
 214    const GLubyte *srcUB = src;
 215    struct pipe_transfer *dst_transfer;
 216
 217    DBG("%s\n", __FUNCTION__);
 218
 219    for (i = 0; i < depth; i++) {
 220       dst_transfer = st_no_flush_get_tex_transfer(st, dst, face, level, i,
 221                                                   PIPE_TRANSFER_WRITE, 0, 0,
 222                                                   u_minify(dst->width0, level),
 223                                                   u_minify(dst->height0, level));
 224
 225       st_surface_data(pipe, dst_transfer,
 226                       0, 0,                             /* dstx, dsty */
 227                       srcUB,
 228                       src_row_stride,
 229                       0, 0,                             /* source x, y */
 230                       u_minify(dst->width0, level),
 231                       u_minify(dst->height0, level));      /* width, height */
 232
 233       pipe->transfer_destroy(pipe, dst_transfer);
 234
 235       srcUB += src_image_stride;
 236    }
 237 }
 238
 239
 240 /* Copy mipmap image between textures
 241  */
 242 void
 243 st_texture_image_copy(struct pipe_context *pipe,
 244                       struct pipe_resource *dst, GLuint dstLevel,
 245                       struct pipe_resource *src,
 246                       GLuint face)
 247 {
 248    GLuint width = u_minify(dst->width0, dstLevel);
 249    GLuint height = u_minify(dst->height0, dstLevel);
 250    GLuint depth = u_minify(dst->depth0, dstLevel);
 251    struct pipe_subresource dstsub, srcsub;
 252    GLuint i;
 253
 254    assert(src->width0 == dst->width0);
 255    assert(src->height0 == dst->height0);
 256
 257    dstsub.face = face;
 258    dstsub.level = dstLevel;
 259    srcsub.face = face;
 260
 261    for (i = 0; i < depth; i++) {
 262       GLuint srcLevel;
 263
 264       /* find src texture level of needed size */
 265       for (srcLevel = 0; srcLevel <= src->last_level; srcLevel++) {
 266          if (u_minify(src->width0, srcLevel) == width &&
 267              u_minify(src->height0, srcLevel) == height) {
 268             break;
 269          }
 270       }
 271       assert(u_minify(src->width0, srcLevel) == width);
 272       assert(u_minify(src->height0, srcLevel) == height);
 273
 274 #if 0
 275       {
 276          struct pipe_screen *screen = pipe->screen;
 277          src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i,
 278                                                PIPE_BUFFER_USAGE_CPU_READ);
 279          ubyte *map = screen->surface_map(screen, src_surface, PIPE_BUFFER_USAGE_CPU_READ);
 280          map += src_surface->width * src_surface->height * 4 / 2;
 281          printf("%s center pixel: %d %d %d %d (pt %p[%d] -> %p[%d])\n",
 282                 __FUNCTION__,
 283                 map[0], map[1], map[2], map[3],
 284                 src, srcLevel, dst, dstLevel);
 285
 286          screen->surface_unmap(screen, src_surface);
 287          pipe_surface_reference(&src_surface, NULL);
 288       }
 289 #endif
 290       srcsub.level = srcLevel;
 291
 292       pipe->resource_copy_region(pipe,
 293                                  dst,
 294                                  dstsub,
 295                                  0, 0, i,/* destX, Y, Z */
 296                                  src,
 297                                  srcsub,
 298                                  0, 0, i,/* srcX, Y, Z */
 299                                  width, height);
 300    }
 301 }
 302
 303
 304 void
 305 st_teximage_flush_before_map(struct st_context *st,
 306                              struct pipe_resource *pt,
 307                              unsigned int face,
 308                              unsigned int level,
 309                              enum pipe_transfer_usage usage)
 310 {
 311    struct pipe_context *pipe = st->pipe;
 312    unsigned referenced =
 313       pipe->is_resource_referenced(pipe, pt, face, level);
 314
 315    if (referenced && ((referenced & PIPE_REFERENCED_FOR_WRITE) ||
 316                       (usage & PIPE_TRANSFER_WRITE)))
 317       st->pipe->flush(st->pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
 318 }