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