src/mesa/drivers/dri/i965/intel_tex.c

   1 #include "swrast/swrast.h"
   2 #include "main/renderbuffer.h"
   3 #include "main/texobj.h"
   4 #include "main/teximage.h"
   5 #include "main/mipmap.h"
   6 #include "drivers/common/meta.h"
   7 #include "brw_context.h"
   8 #include "intel_buffer_objects.h"
   9 #include "intel_mipmap_tree.h"
  10 #include "intel_tex.h"
  11 #include "intel_fbo.h"
  12 #include "intel_reg.h"
  13
  14 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  15
  16 static struct gl_texture_image *
  17 intelNewTextureImage(struct gl_context * ctx)
  18 {
  19    DBG("%s\n", __func__);
  20    (void) ctx;
  21    return (struct gl_texture_image *) CALLOC_STRUCT(intel_texture_image);
  22 }
  23
  24 static void
  25 intelDeleteTextureImage(struct gl_context * ctx, struct gl_texture_image *img)
  26 {
  27    /* nothing special (yet) for intel_texture_image */
  28    _mesa_delete_texture_image(ctx, img);
  29 }
  30
  31
  32 static struct gl_texture_object *
  33 intelNewTextureObject(struct gl_context * ctx, GLuint name, GLenum target)
  34 {
  35    struct intel_texture_object *obj = CALLOC_STRUCT(intel_texture_object);
  36
  37    (void) ctx;
  38
  39    DBG("%s\n", __func__);
  40
  41    if (obj == NULL)
  42       return NULL;
  43
  44    _mesa_initialize_texture_object(ctx, &obj->base, name, target);
  45
  46    obj->needs_validate = true;
  47
  48    return &obj->base;
  49 }
  50
  51 static void
  52 intelDeleteTextureObject(struct gl_context *ctx,
  53                          struct gl_texture_object *texObj)
  54 {
  55    struct intel_texture_object *intelObj = intel_texture_object(texObj);
  56
  57    intel_miptree_release(&intelObj->mt);
  58    _mesa_delete_texture_object(ctx, texObj);
  59 }
  60
  61 static GLboolean
  62 intel_alloc_texture_image_buffer(struct gl_context *ctx,
  63                                  struct gl_texture_image *image)
  64 {
  65    struct brw_context *brw = brw_context(ctx);
  66    struct intel_texture_image *intel_image = intel_texture_image(image);
  67    struct gl_texture_object *texobj = image->TexObject;
  68    struct intel_texture_object *intel_texobj = intel_texture_object(texobj);
  69
  70    assert(image->Border == 0);
  71
  72    /* Quantize sample count */
  73    if (image->NumSamples) {
  74       image->NumSamples = intel_quantize_num_samples(brw->intelScreen, image->NumSamples);
  75       if (!image->NumSamples)
  76          return false;
  77    }
  78
  79    /* Because the driver uses AllocTextureImageBuffer() internally, it may end
  80     * up mismatched with FreeTextureImageBuffer(), but that is safe to call
  81     * multiple times.
  82     */
  83    ctx->Driver.FreeTextureImageBuffer(ctx, image);
  84
  85    if (!_swrast_init_texture_image(image))
  86       return false;
  87
  88    if (intel_texobj->mt &&
  89        intel_miptree_match_image(intel_texobj->mt, image)) {
  90       intel_miptree_reference(&intel_image->mt, intel_texobj->mt);
  91       DBG("%s: alloc obj %p level %d %dx%dx%d using object's miptree %p\n",
  92           __func__, texobj, image->Level,
  93           image->Width, image->Height, image->Depth, intel_texobj->mt);
  94    } else {
  95       intel_image->mt = intel_miptree_create_for_teximage(brw, intel_texobj,
  96                                                           intel_image,
  97                                                           0);
  98
  99       /* Even if the object currently has a mipmap tree associated
 100        * with it, this one is a more likely candidate to represent the
 101        * whole object since our level didn't fit what was there
 102        * before, and any lower levels would fit into our miptree.
 103        */
 104       intel_miptree_reference(&intel_texobj->mt, intel_image->mt);
 105
 106       DBG("%s: alloc obj %p level %d %dx%dx%d using new miptree %p\n",
 107           __func__, texobj, image->Level,
 108           image->Width, image->Height, image->Depth, intel_image->mt);
 109    }
 110
 111    intel_texobj->needs_validate = true;
 112
 113    return true;
 114 }
 115
 116 /**
 117  * ctx->Driver.AllocTextureStorage() handler.
 118  *
 119  * Compare this to _mesa_AllocTextureStorage_sw, which would call into
 120  * intel_alloc_texture_image_buffer() above.
 121  */
 122 static GLboolean
 123 intel_alloc_texture_storage(struct gl_context *ctx,
 124                             struct gl_texture_object *texobj,
 125                             GLsizei levels, GLsizei width,
 126                             GLsizei height, GLsizei depth)
 127 {
 128    struct brw_context *brw = brw_context(ctx);
 129    struct intel_texture_object *intel_texobj = intel_texture_object(texobj);
 130    struct gl_texture_image *first_image = texobj->Image[0][0];
 131    int num_samples = intel_quantize_num_samples(brw->intelScreen,
 132                                                 first_image->NumSamples);
 133    const int numFaces = _mesa_num_tex_faces(texobj->Target);
 134    int face;
 135    int level;
 136
 137    /* If the object's current miptree doesn't match what we need, make a new
 138     * one.
 139     */
 140    if (!intel_texobj->mt ||
 141        !intel_miptree_match_image(intel_texobj->mt, first_image) ||
 142        intel_texobj->mt->last_level != levels - 1) {
 143       intel_miptree_release(&intel_texobj->mt);
 144
 145       intel_get_image_dims(first_image, &width, &height, &depth);
 146       intel_texobj->mt = intel_miptree_create(brw, texobj->Target,
 147                                               first_image->TexFormat,
 148                                               0, levels - 1,
 149                                               width, height, depth,
 150                                               num_samples,
 151                                               MIPTREE_LAYOUT_TILING_ANY);
 152
 153       if (intel_texobj->mt == NULL) {
 154          return false;
 155       }
 156    }
 157
 158    for (face = 0; face < numFaces; face++) {
 159       for (level = 0; level < levels; level++) {
 160          struct gl_texture_image *image = texobj->Image[face][level];
 161          struct intel_texture_image *intel_image = intel_texture_image(image);
 162
 163          image->NumSamples = num_samples;
 164
 165          _swrast_free_texture_image_buffer(ctx, image);
 166          if (!_swrast_init_texture_image(image))
 167             return false;
 168
 169          intel_miptree_reference(&intel_image->mt, intel_texobj->mt);
 170       }
 171    }
 172
 173    /* The miptree is in a validated state, so no need to check later. */
 174    intel_texobj->needs_validate = false;
 175    intel_texobj->validated_first_level = 0;
 176    intel_texobj->validated_last_level = levels - 1;
 177    intel_texobj->_Format = intel_texobj->mt->format;
 178
 179    return true;
 180 }
 181
 182
 183 static void
 184 intel_free_texture_image_buffer(struct gl_context * ctx,
 185                                 struct gl_texture_image *texImage)
 186 {
 187    struct intel_texture_image *intelImage = intel_texture_image(texImage);
 188
 189    DBG("%s\n", __func__);
 190
 191    intel_miptree_release(&intelImage->mt);
 192
 193    _swrast_free_texture_image_buffer(ctx, texImage);
 194 }
 195
 196 /**
 197  * Map texture memory/buffer into user space.
 198  * Note: the region of interest parameters are ignored here.
 199  * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
 200  * \param mapOut  returns start of mapping of region of interest
 201  * \param rowStrideOut  returns row stride in bytes
 202  */
 203 static void
 204 intel_map_texture_image(struct gl_context *ctx,
 205                         struct gl_texture_image *tex_image,
 206                         GLuint slice,
 207                         GLuint x, GLuint y, GLuint w, GLuint h,
 208                         GLbitfield mode,
 209                         GLubyte **map,
 210                         GLint *out_stride)
 211 {
 212    struct brw_context *brw = brw_context(ctx);
 213    struct intel_texture_image *intel_image = intel_texture_image(tex_image);
 214    struct intel_mipmap_tree *mt = intel_image->mt;
 215    ptrdiff_t stride;
 216
 217    /* Our texture data is always stored in a miptree. */
 218    assert(mt);
 219
 220    /* Check that our caller wasn't confused about how to map a 1D texture. */
 221    assert(tex_image->TexObject->Target != GL_TEXTURE_1D_ARRAY ||
 222           h == 1);
 223
 224    /* intel_miptree_map operates on a unified "slice" number that references the
 225     * cube face, since it's all just slices to the miptree code.
 226     */
 227    if (tex_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
 228       slice = tex_image->Face;
 229
 230    intel_miptree_map(brw, mt,
 231                      tex_image->Level + tex_image->TexObject->MinLevel,
 232                      slice + tex_image->TexObject->MinLayer,
 233                      x, y, w, h, mode,
 234                      (void **)map, &stride);
 235
 236    *out_stride = stride;
 237 }
 238
 239 static void
 240 intel_unmap_texture_image(struct gl_context *ctx,
 241                           struct gl_texture_image *tex_image, GLuint slice)
 242 {
 243    struct brw_context *brw = brw_context(ctx);
 244    struct intel_texture_image *intel_image = intel_texture_image(tex_image);
 245    struct intel_mipmap_tree *mt = intel_image->mt;
 246
 247    if (tex_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
 248       slice = tex_image->Face;
 249
 250    intel_miptree_unmap(brw, mt,
 251          tex_image->Level + tex_image->TexObject->MinLevel,
 252          slice + tex_image->TexObject->MinLayer);
 253 }
 254
 255 static GLboolean
 256 intel_texture_view(struct gl_context *ctx,
 257                    struct gl_texture_object *texObj,
 258                    struct gl_texture_object *origTexObj)
 259 {
 260    struct brw_context *brw = brw_context(ctx);
 261    struct intel_texture_object *intel_tex = intel_texture_object(texObj);
 262    struct intel_texture_object *intel_orig_tex = intel_texture_object(origTexObj);
 263
 264    assert(intel_orig_tex->mt);
 265    intel_miptree_reference(&intel_tex->mt, intel_orig_tex->mt);
 266
 267    /* Since we can only make views of immutable-format textures,
 268     * we can assume that everything is in origTexObj's miptree.
 269     *
 270     * Mesa core has already made us a copy of all the teximage objects,
 271     * except it hasn't copied our mt pointers, etc.
 272     */
 273    const int numFaces = _mesa_num_tex_faces(texObj->Target);
 274    const int numLevels = texObj->NumLevels;
 275
 276    int face;
 277    int level;
 278
 279    for (face = 0; face < numFaces; face++) {
 280       for (level = 0; level < numLevels; level++) {
 281          struct gl_texture_image *image = texObj->Image[face][level];
 282          struct intel_texture_image *intel_image = intel_texture_image(image);
 283
 284          intel_miptree_reference(&intel_image->mt, intel_orig_tex->mt);
 285       }
 286    }
 287
 288    /* The miptree is in a validated state, so no need to check later. */
 289    intel_tex->needs_validate = false;
 290    intel_tex->validated_first_level = 0;
 291    intel_tex->validated_last_level = numLevels - 1;
 292
 293    /* Set the validated texture format, with the same adjustments that
 294     * would have been applied to determine the underlying texture's
 295     * mt->format.
 296     */
 297    intel_tex->_Format = intel_depth_format_for_depthstencil_format(
 298          intel_lower_compressed_format(brw, texObj->Image[0][0]->TexFormat));
 299
 300    return GL_TRUE;
 301 }
 302
 303 static bool
 304 intel_set_texture_storage_for_buffer_object(struct gl_context *ctx,
 305                                             struct gl_texture_object *tex_obj,
 306                                             struct gl_buffer_object *buffer_obj,
 307                                             uint32_t buffer_offset,
 308                                             uint32_t row_stride,
 309                                             bool read_only)
 310 {
 311    struct brw_context *brw = brw_context(ctx);
 312    struct intel_texture_object *intel_texobj = intel_texture_object(tex_obj);
 313    struct gl_texture_image *image = tex_obj->Image[0][0];
 314    struct intel_texture_image *intel_image = intel_texture_image(image);
 315    struct intel_buffer_object *intel_buffer_obj = intel_buffer_object(buffer_obj);
 316
 317    if (!read_only) {
 318       /* Renderbuffers have the restriction that the buffer offset and
 319        * surface pitch must be a multiple of the element size.  If it's
 320        * not, we have to fail and fall back to software.
 321        */
 322       int cpp = _mesa_get_format_bytes(image->TexFormat);
 323       if (buffer_offset % cpp || row_stride % cpp) {
 324          perf_debug("Bad PBO alignment; fallback to CPU mapping\n");
 325          return false;
 326       }
 327
 328       if (!brw->format_supported_as_render_target[image->TexFormat]) {
 329          perf_debug("Non-renderable PBO format; fallback to CPU mapping\n");
 330          return false;
 331       }
 332    }
 333
 334    assert(intel_texobj->mt == NULL);
 335
 336    drm_intel_bo *bo = intel_bufferobj_buffer(brw, intel_buffer_obj,
 337                                              buffer_offset,
 338                                              row_stride * image->Height);
 339    intel_texobj->mt =
 340       intel_miptree_create_for_bo(brw, bo,
 341                                   image->TexFormat,
 342                                   buffer_offset,
 343                                   image->Width, image->Height, image->Depth,
 344                                   row_stride,
 345                                   0);
 346    if (!intel_texobj->mt)
 347       return false;
 348
 349    if (!_swrast_init_texture_image(image))
 350       return false;
 351
 352    intel_miptree_reference(&intel_image->mt, intel_texobj->mt);
 353
 354    /* The miptree is in a validated state, so no need to check later. */
 355    intel_texobj->needs_validate = false;
 356    intel_texobj->validated_first_level = 0;
 357    intel_texobj->validated_last_level = 0;
 358    intel_texobj->_Format = intel_texobj->mt->format;
 359
 360    return true;
 361 }
 362
 363 static void
 364 intel_texture_barrier(struct gl_context *ctx)
 365 {
 366    struct brw_context *brw = brw_context(ctx);
 367
 368    if (brw->gen >= 6) {
 369       brw_emit_pipe_control_flush(brw,
 370                                   PIPE_CONTROL_DEPTH_CACHE_FLUSH |
 371                                   PIPE_CONTROL_RENDER_TARGET_FLUSH |
 372                                   PIPE_CONTROL_CS_STALL);
 373
 374       brw_emit_pipe_control_flush(brw,
 375                                   PIPE_CONTROL_TEXTURE_CACHE_INVALIDATE);
 376    } else {
 377       brw_emit_mi_flush(brw);
 378    }
 379 }
 380
 381 void
 382 intelInitTextureFuncs(struct dd_function_table *functions)
 383 {
 384    functions->NewTextureObject = intelNewTextureObject;
 385    functions->NewTextureImage = intelNewTextureImage;
 386    functions->DeleteTextureImage = intelDeleteTextureImage;
 387    functions->DeleteTexture = intelDeleteTextureObject;
 388    functions->AllocTextureImageBuffer = intel_alloc_texture_image_buffer;
 389    functions->FreeTextureImageBuffer = intel_free_texture_image_buffer;
 390    functions->AllocTextureStorage = intel_alloc_texture_storage;
 391    functions->MapTextureImage = intel_map_texture_image;
 392    functions->UnmapTextureImage = intel_unmap_texture_image;
 393    functions->TextureView = intel_texture_view;
 394    functions->SetTextureStorageForBufferObject =
 395       intel_set_texture_storage_for_buffer_object;
 396    functions->TextureBarrier = intel_texture_barrier;
 397 }