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 #include "main/texfetch.h"
  35 #include "main/teximage.h"
  36 #include "main/texobj.h"
  37
  38 #undef Elements  /* fix re-defined macro warning */
  39
  40 #include "pipe/p_state.h"
  41 #include "pipe/p_context.h"
  42 #include "pipe/p_defines.h"
  43 #include "util/u_inlines.h"
  44 #include "util/u_format.h"
  45 #include "util/u_rect.h"
  46 #include "util/u_math.h"
  47
  48
  49 #define DBG if(0) printf
  50
  51 #if 0
  52 static GLenum
  53 target_to_target(GLenum target)
  54 {
  55    switch (target) {
  56    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
  57    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
  58    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
  59    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
  60    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
  61    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
  62       return GL_TEXTURE_CUBE_MAP_ARB;
  63    default:
  64       return target;
  65    }
  66 }
  67 #endif
  68
  69
  70 /**
  71  * Allocate a new pipe_resource object
  72  * width0, height0, depth0 are the dimensions of the level 0 image
  73  * (the highest resolution).  last_level indicates how many mipmap levels
  74  * to allocate storage for.  For non-mipmapped textures, this will be zero.
  75  */
  76 struct pipe_resource *
  77 st_texture_create(struct st_context *st,
  78                   enum pipe_texture_target target,
  79                   enum pipe_format format,
  80                   GLuint last_level,
  81                   GLuint width0,
  82                   GLuint height0,
  83                   GLuint depth0,
  84                   GLuint bind )
  85 {
  86    struct pipe_resource pt, *newtex;
  87    struct pipe_screen *screen = st->pipe->screen;
  88
  89    assert(target <= PIPE_TEXTURE_CUBE);
  90
  91    DBG("%s target %s format %s last_level %d\n", __FUNCTION__,
  92        _mesa_lookup_enum_by_nr(target),
  93        _mesa_lookup_enum_by_nr(format), last_level);
  94
  95    assert(format);
  96    assert(screen->is_format_supported(screen, format, target,
  97                                       PIPE_BIND_SAMPLER_VIEW, 0));
  98
  99    memset(&pt, 0, sizeof(pt));
 100    pt.target = target;
 101    pt.format = format;
 102    pt.last_level = last_level;
 103    pt.width0 = width0;
 104    pt.height0 = height0;
 105    pt.depth0 = depth0;
 106    pt._usage = PIPE_USAGE_DEFAULT;
 107    pt.bind = bind;
 108    pt.flags = 0;
 109
 110    newtex = screen->resource_create(screen, &pt);
 111
 112    assert(!newtex || pipe_is_referenced(&newtex->reference));
 113
 114    return newtex;
 115 }
 116
 117
 118 /**
 119  * Check if a texture image can be pulled into a unified mipmap texture.
 120  */
 121 GLboolean
 122 st_texture_match_image(const struct pipe_resource *pt,
 123                        const struct gl_texture_image *image,
 124                        GLuint face, GLuint level)
 125 {
 126    /* Images with borders are never pulled into mipmap textures.
 127     */
 128    if (image->Border)
 129       return GL_FALSE;
 130
 131    /* Check if this image's format matches the established texture's format.
 132     */
 133    if (st_mesa_format_to_pipe_format(image->TexFormat) != pt->format)
 134       return GL_FALSE;
 135
 136    /* Test if this image's size matches what's expected in the
 137     * established texture.
 138     */
 139    if (image->Width != u_minify(pt->width0, level) ||
 140        image->Height != u_minify(pt->height0, level) ||
 141        image->Depth != u_minify(pt->depth0, level))
 142       return GL_FALSE;
 143
 144    return GL_TRUE;
 145 }
 146
 147
 148 #if 000
 149 /* Although we use the image_offset[] array to store relative offsets
 150  * to cube faces, Mesa doesn't know anything about this and expects
 151  * each cube face to be treated as a separate image.
 152  *
 153  * These functions present that view to mesa:
 154  */
 155 const GLuint *
 156 st_texture_depth_offsets(struct pipe_resource *pt, GLuint level)
 157 {
 158    static const GLuint zero = 0;
 159
 160    if (pt->target != PIPE_TEXTURE_3D || pt->level[level].nr_images == 1)
 161       return &zero;
 162    else
 163       return pt->level[level].image_offset;
 164 }
 165
 166
 167 /**
 168  * Return the offset to the given mipmap texture image within the
 169  * texture memory buffer, in bytes.
 170  */
 171 GLuint
 172 st_texture_image_offset(const struct pipe_resource * pt,
 173                         GLuint face, GLuint level)
 174 {
 175    if (pt->target == PIPE_TEXTURE_CUBE)
 176       return (pt->level[level].level_offset +
 177               pt->level[level].image_offset[face] * pt->cpp);
 178    else
 179       return pt->level[level].level_offset;
 180 }
 181 #endif
 182
 183
 184 /**
 185  * Map a teximage in a mipmap texture.
 186  * \param row_stride  returns row stride in bytes
 187  * \param image_stride  returns image stride in bytes (for 3D textures).
 188  * \return address of mapping
 189  */
 190 GLubyte *
 191 st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
 192                      GLuint zoffset, enum pipe_transfer_usage usage,
 193                      GLuint x, GLuint y, GLuint w, GLuint h)
 194 {
 195    struct pipe_context *pipe = st->pipe;
 196    struct pipe_resource *pt = stImage->pt;
 197
 198    DBG("%s \n", __FUNCTION__);
 199
 200    stImage->transfer = st_no_flush_get_tex_transfer(st, pt, stImage->face,
 201                                                     stImage->level, zoffset,
 202                                                     usage, x, y, w, h);
 203
 204    if (stImage->transfer)
 205       return pipe_transfer_map(pipe, stImage->transfer);
 206    else
 207       return NULL;
 208 }
 209
 210
 211 void
 212 st_texture_image_unmap(struct st_context *st,
 213                        struct st_texture_image *stImage)
 214 {
 215    struct pipe_context *pipe = st->pipe;
 216
 217    DBG("%s\n", __FUNCTION__);
 218
 219    pipe_transfer_unmap(pipe, stImage->transfer);
 220
 221    pipe->transfer_destroy(pipe, stImage->transfer);
 222 }
 223
 224
 225
 226 /**
 227  * Upload data to a rectangular sub-region.  Lots of choices how to do this:
 228  *
 229  * - memcpy by span to current destination
 230  * - upload data as new buffer and blit
 231  *
 232  * Currently always memcpy.
 233  */
 234 static void
 235 st_surface_data(struct pipe_context *pipe,
 236                 struct pipe_transfer *dst,
 237                 unsigned dstx, unsigned dsty,
 238                 const void *src, unsigned src_stride,
 239                 unsigned srcx, unsigned srcy, unsigned width, unsigned height)
 240 {
 241    void *map = pipe_transfer_map(pipe, dst);
 242
 243    assert(dst->resource);
 244    util_copy_rect(map,
 245                   dst->resource->format,
 246                   dst->stride,
 247                   dstx, dsty,
 248                   width, height,
 249                   src, src_stride,
 250                   srcx, srcy);
 251
 252    pipe_transfer_unmap(pipe, dst);
 253 }
 254
 255
 256 /* Upload data for a particular image.
 257  */
 258 void
 259 st_texture_image_data(struct st_context *st,
 260                       struct pipe_resource *dst,
 261                       GLuint face,
 262                       GLuint level,
 263                       void *src,
 264                       GLuint src_row_stride, GLuint src_image_stride)
 265 {
 266    struct pipe_context *pipe = st->pipe;
 267    GLuint depth = u_minify(dst->depth0, level);
 268    GLuint i;
 269    const GLubyte *srcUB = src;
 270    struct pipe_transfer *dst_transfer;
 271
 272    DBG("%s\n", __FUNCTION__);
 273
 274    for (i = 0; i < depth; i++) {
 275       dst_transfer = st_no_flush_get_tex_transfer(st, dst, face, level, i,
 276                                                   PIPE_TRANSFER_WRITE, 0, 0,
 277                                                   u_minify(dst->width0, level),
 278                                                   u_minify(dst->height0, level));
 279
 280       st_surface_data(pipe, dst_transfer,
 281                       0, 0,                             /* dstx, dsty */
 282                       srcUB,
 283                       src_row_stride,
 284                       0, 0,                             /* source x, y */
 285                       u_minify(dst->width0, level),
 286                       u_minify(dst->height0, level));      /* width, height */
 287
 288       pipe->transfer_destroy(pipe, dst_transfer);
 289
 290       srcUB += src_image_stride;
 291    }
 292 }
 293
 294
 295 /* Copy mipmap image between textures
 296  */
 297 void
 298 st_texture_image_copy(struct pipe_context *pipe,
 299                       struct pipe_resource *dst, GLuint dstLevel,
 300                       struct pipe_resource *src,
 301                       GLuint face)
 302 {
 303    struct pipe_screen *screen = pipe->screen;
 304    GLuint width = u_minify(dst->width0, dstLevel);
 305    GLuint height = u_minify(dst->height0, dstLevel);
 306    GLuint depth = u_minify(dst->depth0, dstLevel);
 307    struct pipe_surface *src_surface;
 308    struct pipe_surface *dst_surface;
 309    GLuint i;
 310
 311    for (i = 0; i < depth; i++) {
 312       GLuint srcLevel;
 313
 314       /* find src texture level of needed size */
 315       for (srcLevel = 0; srcLevel <= src->last_level; srcLevel++) {
 316          if (u_minify(src->width0, srcLevel) == width &&
 317              u_minify(src->height0, srcLevel) == height) {
 318             break;
 319          }
 320       }
 321       assert(u_minify(src->width0, srcLevel) == width);
 322       assert(u_minify(src->height0, srcLevel) == height);
 323
 324 #if 0
 325       {
 326          src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i,
 327                                                PIPE_BUFFER_USAGE_CPU_READ);
 328          ubyte *map = screen->surface_map(screen, src_surface, PIPE_BUFFER_USAGE_CPU_READ);
 329          map += src_surface->width * src_surface->height * 4 / 2;
 330          printf("%s center pixel: %d %d %d %d (pt %p[%d] -> %p[%d])\n",
 331                 __FUNCTION__,
 332                 map[0], map[1], map[2], map[3],
 333                 src, srcLevel, dst, dstLevel);
 334
 335          screen->surface_unmap(screen, src_surface);
 336          pipe_surface_reference(&src_surface, NULL);
 337       }
 338 #endif
 339
 340       dst_surface = screen->get_tex_surface(screen, dst, face, dstLevel, i,
 341                                             PIPE_BIND_BLIT_DESTINATION);
 342
 343       src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i,
 344                                             PIPE_BIND_BLIT_SOURCE);
 345
 346       pipe->surface_copy(pipe,
 347                          dst_surface,
 348                          0, 0, /* destX, Y */
 349                          src_surface,
 350                          0, 0, /* srcX, Y */
 351                          width, height);
 352
 353       pipe_surface_reference(&src_surface, NULL);
 354       pipe_surface_reference(&dst_surface, NULL);
 355    }
 356 }
 357
 358
 359 void
 360 st_teximage_flush_before_map(struct st_context *st,
 361                              struct pipe_resource *pt,
 362                              unsigned int face,
 363                              unsigned int level,
 364                              enum pipe_transfer_usage usage)
 365 {
 366    struct pipe_context *pipe = st->pipe;
 367    unsigned referenced =
 368       pipe->is_resource_referenced(pipe, pt, face, level);
 369
 370    if (referenced && ((referenced & PIPE_REFERENCED_FOR_WRITE) ||
 371                       (usage & PIPE_TRANSFER_WRITE)))
 372       st->pipe->flush(st->pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
 373 }