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       intel_texobj->mt = intel_miptree_create(brw, texobj->Target,
 145                                               first_image->TexFormat,
 146                                               0, levels - 1,
 147                                               width, height, depth,
 148                                               num_samples,
 149                                               MIPTREE_LAYOUT_TILING_ANY);
 150
 151       if (intel_texobj->mt == NULL) {
 152          return false;
 153       }
 154    }
 155
 156    for (face = 0; face < numFaces; face++) {
 157       for (level = 0; level < levels; level++) {
 158          struct gl_texture_image *image = texobj->Image[face][level];
 159          struct intel_texture_image *intel_image = intel_texture_image(image);
 160
 161          image->NumSamples = num_samples;
 162
 163          _swrast_free_texture_image_buffer(ctx, image);
 164          if (!_swrast_init_texture_image(image))
 165             return false;
 166
 167          intel_miptree_reference(&intel_image->mt, intel_texobj->mt);
 168       }
 169    }
 170
 171    /* The miptree is in a validated state, so no need to check later. */
 172    intel_texobj->needs_validate = false;
 173    intel_texobj->validated_first_level = 0;
 174    intel_texobj->validated_last_level = levels - 1;
 175    intel_texobj->_Format = intel_texobj->mt->format;
 176
 177    return true;
 178 }
 179
 180
 181 static void
 182 intel_free_texture_image_buffer(struct gl_context * ctx,
 183                                 struct gl_texture_image *texImage)
 184 {
 185    struct intel_texture_image *intelImage = intel_texture_image(texImage);
 186
 187    DBG("%s\n", __func__);
 188
 189    intel_miptree_release(&intelImage->mt);
 190
 191    _swrast_free_texture_image_buffer(ctx, texImage);
 192 }
 193
 194 /**
 195  * Map texture memory/buffer into user space.
 196  * Note: the region of interest parameters are ignored here.
 197  * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
 198  * \param mapOut  returns start of mapping of region of interest
 199  * \param rowStrideOut  returns row stride in bytes
 200  */
 201 static void
 202 intel_map_texture_image(struct gl_context *ctx,
 203                         struct gl_texture_image *tex_image,
 204                         GLuint slice,
 205                         GLuint x, GLuint y, GLuint w, GLuint h,
 206                         GLbitfield mode,
 207                         GLubyte **map,
 208                         GLint *out_stride)
 209 {
 210    struct brw_context *brw = brw_context(ctx);
 211    struct intel_texture_image *intel_image = intel_texture_image(tex_image);
 212    struct intel_mipmap_tree *mt = intel_image->mt;
 213    ptrdiff_t stride;
 214
 215    /* Our texture data is always stored in a miptree. */
 216    assert(mt);
 217
 218    /* Check that our caller wasn't confused about how to map a 1D texture. */
 219    assert(tex_image->TexObject->Target != GL_TEXTURE_1D_ARRAY ||
 220           h == 1);
 221
 222    /* intel_miptree_map operates on a unified "slice" number that references the
 223     * cube face, since it's all just slices to the miptree code.
 224     */
 225    if (tex_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
 226       slice = tex_image->Face;
 227
 228    intel_miptree_map(brw, mt,
 229                      tex_image->Level + tex_image->TexObject->MinLevel,
 230                      slice + tex_image->TexObject->MinLayer,
 231                      x, y, w, h, mode,
 232                      (void **)map, &stride);
 233
 234    *out_stride = stride;
 235 }
 236
 237 static void
 238 intel_unmap_texture_image(struct gl_context *ctx,
 239                           struct gl_texture_image *tex_image, GLuint slice)
 240 {
 241    struct brw_context *brw = brw_context(ctx);
 242    struct intel_texture_image *intel_image = intel_texture_image(tex_image);
 243    struct intel_mipmap_tree *mt = intel_image->mt;
 244
 245    if (tex_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
 246       slice = tex_image->Face;
 247
 248    intel_miptree_unmap(brw, mt,
 249          tex_image->Level + tex_image->TexObject->MinLevel,
 250          slice + tex_image->TexObject->MinLayer);
 251 }
 252
 253 static GLboolean
 254 intel_texture_view(struct gl_context *ctx,
 255                    struct gl_texture_object *texObj,
 256                    struct gl_texture_object *origTexObj)
 257 {
 258    struct brw_context *brw = brw_context(ctx);
 259    struct intel_texture_object *intel_tex = intel_texture_object(texObj);
 260    struct intel_texture_object *intel_orig_tex = intel_texture_object(origTexObj);
 261
 262    assert(intel_orig_tex->mt);
 263    intel_miptree_reference(&intel_tex->mt, intel_orig_tex->mt);
 264
 265    /* Since we can only make views of immutable-format textures,
 266     * we can assume that everything is in origTexObj's miptree.
 267     *
 268     * Mesa core has already made us a copy of all the teximage objects,
 269     * except it hasn't copied our mt pointers, etc.
 270     */
 271    const int numFaces = _mesa_num_tex_faces(texObj->Target);
 272    const int numLevels = texObj->NumLevels;
 273
 274    int face;
 275    int level;
 276
 277    for (face = 0; face < numFaces; face++) {
 278       for (level = 0; level < numLevels; level++) {
 279          struct gl_texture_image *image = texObj->Image[face][level];
 280          struct intel_texture_image *intel_image = intel_texture_image(image);
 281
 282          intel_miptree_reference(&intel_image->mt, intel_orig_tex->mt);
 283       }
 284    }
 285
 286    /* The miptree is in a validated state, so no need to check later. */
 287    intel_tex->needs_validate = false;
 288    intel_tex->validated_first_level = 0;
 289    intel_tex->validated_last_level = numLevels - 1;
 290
 291    /* Set the validated texture format, with the same adjustments that
 292     * would have been applied to determine the underlying texture's
 293     * mt->format.
 294     */
 295    intel_tex->_Format = intel_depth_format_for_depthstencil_format(
 296          intel_lower_compressed_format(brw, texObj->Image[0][0]->TexFormat));
 297
 298    return GL_TRUE;
 299 }
 300
 301 static bool
 302 intel_set_texture_storage_for_buffer_object(struct gl_context *ctx,
 303                                             struct gl_texture_object *tex_obj,
 304                                             struct gl_buffer_object *buffer_obj,
 305                                             uint32_t buffer_offset,
 306                                             uint32_t row_stride,
 307                                             bool read_only)
 308 {
 309    struct brw_context *brw = brw_context(ctx);
 310    struct intel_texture_object *intel_texobj = intel_texture_object(tex_obj);
 311    struct gl_texture_image *image = tex_obj->Image[0][0];
 312    struct intel_texture_image *intel_image = intel_texture_image(image);
 313    struct intel_buffer_object *intel_buffer_obj = intel_buffer_object(buffer_obj);
 314
 315    if (!read_only) {
 316       /* Renderbuffers have the restriction that the buffer offset and
 317        * surface pitch must be a multiple of the element size.  If it's
 318        * not, we have to fail and fall back to software.
 319        */
 320       int cpp = _mesa_get_format_bytes(image->TexFormat);
 321       if (buffer_offset % cpp || row_stride % cpp) {
 322          perf_debug("Bad PBO alignment; fallback to CPU mapping\n");
 323          return false;
 324       }
 325
 326       if (!brw->format_supported_as_render_target[image->TexFormat]) {
 327          perf_debug("Non-renderable PBO format; fallback to CPU mapping\n");
 328          return false;
 329       }
 330    }
 331
 332    assert(intel_texobj->mt == NULL);
 333
 334    drm_intel_bo *bo = intel_bufferobj_buffer(brw, intel_buffer_obj,
 335                                              buffer_offset,
 336                                              row_stride * image->Height);
 337    intel_texobj->mt =
 338       intel_miptree_create_for_bo(brw, bo,
 339                                   image->TexFormat,
 340                                   buffer_offset,
 341                                   image->Width, image->Height, image->Depth,
 342                                   row_stride,
 343                                   0);
 344    if (!intel_texobj->mt)
 345       return false;
 346
 347    if (!_swrast_init_texture_image(image))
 348       return false;
 349
 350    intel_miptree_reference(&intel_image->mt, intel_texobj->mt);
 351
 352    /* The miptree is in a validated state, so no need to check later. */
 353    intel_texobj->needs_validate = false;
 354    intel_texobj->validated_first_level = 0;
 355    intel_texobj->validated_last_level = 0;
 356    intel_texobj->_Format = intel_texobj->mt->format;
 357
 358    return true;
 359 }
 360
 361 static void
 362 intel_texture_barrier(struct gl_context *ctx)
 363 {
 364    struct brw_context *brw = brw_context(ctx);
 365
 366    if (brw->gen >= 6) {
 367       if (brw->gen == 6) {
 368          /* [Dev-SNB{W/A}]: Before a PIPE_CONTROL with Write Cache
 369           * Flush Enable = 1, a PIPE_CONTROL with any non-zero
 370           * post-sync-op is required.
 371           */
 372          brw_emit_post_sync_nonzero_flush(brw);
 373       }
 374
 375       brw_emit_pipe_control_flush(brw,
 376                                   PIPE_CONTROL_DEPTH_CACHE_FLUSH |
 377                                   PIPE_CONTROL_RENDER_TARGET_FLUSH |
 378                                   PIPE_CONTROL_CS_STALL);
 379
 380       brw_emit_pipe_control_flush(brw,
 381                                   PIPE_CONTROL_TEXTURE_CACHE_INVALIDATE);
 382    } else {
 383       brw_emit_mi_flush(brw);
 384    }
 385 }
 386
 387 void
 388 intelInitTextureFuncs(struct dd_function_table *functions)
 389 {
 390    functions->NewTextureObject = intelNewTextureObject;
 391    functions->NewTextureImage = intelNewTextureImage;
 392    functions->DeleteTextureImage = intelDeleteTextureImage;
 393    functions->DeleteTexture = intelDeleteTextureObject;
 394    functions->AllocTextureImageBuffer = intel_alloc_texture_image_buffer;
 395    functions->FreeTextureImageBuffer = intel_free_texture_image_buffer;
 396    functions->AllocTextureStorage = intel_alloc_texture_storage;
 397    functions->MapTextureImage = intel_map_texture_image;
 398    functions->UnmapTextureImage = intel_unmap_texture_image;
 399    functions->TextureView = intel_texture_view;
 400    functions->SetTextureStorageForBufferObject =
 401       intel_set_texture_storage_for_buffer_object;
 402    functions->TextureBarrier = intel_texture_barrier;
 403 }