src/mesa/drivers/dri/intel/intel_tex_validate.c

   1 #include "main/mtypes.h"
   2 #include "main/macros.h"
   3 #include "main/samplerobj.h"
   4 #include "main/texobj.h"
   5
   6 #include "intel_context.h"
   7 #include "intel_mipmap_tree.h"
   8 #include "intel_blit.h"
   9 #include "intel_tex.h"
  10 #include "intel_tex_layout.h"
  11
  12 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  13
  14 /**
  15  * When validating, we only care about the texture images that could
  16  * be seen, so for non-mipmapped modes we want to ignore everything
  17  * but BaseLevel.
  18  */
  19 static void
  20 intel_update_max_level(struct intel_texture_object *intelObj,
  21                        struct gl_sampler_object *sampler)
  22 {
  23    struct gl_texture_object *tObj = &intelObj->base;
  24
  25    if (sampler->MinFilter == GL_NEAREST ||
  26        sampler->MinFilter == GL_LINEAR) {
  27       intelObj->_MaxLevel = tObj->BaseLevel;
  28    } else {
  29       intelObj->_MaxLevel = tObj->_MaxLevel;
  30    }
  31 }
  32
  33 /*
  34  */
  35 GLuint
  36 intel_finalize_mipmap_tree(struct intel_context *intel, GLuint unit)
  37 {
  38    struct gl_context *ctx = &intel->ctx;
  39    struct gl_texture_object *tObj = intel->ctx.Texture.Unit[unit]._Current;
  40    struct intel_texture_object *intelObj = intel_texture_object(tObj);
  41    struct gl_sampler_object *sampler = _mesa_get_samplerobj(ctx, unit);
  42    GLuint face, i;
  43    GLuint nr_faces = 0;
  44    struct intel_texture_image *firstImage;
  45    int width, height, depth;
  46
  47    /* TBOs require no validation -- they always just point to their BO. */
  48    if (tObj->Target == GL_TEXTURE_BUFFER)
  49       return true;
  50
  51    /* We know/require this is true by now:
  52     */
  53    assert(intelObj->base._BaseComplete);
  54
  55    /* What levels must the tree include at a minimum?
  56     */
  57    intel_update_max_level(intelObj, sampler);
  58    firstImage = intel_texture_image(tObj->Image[0][tObj->BaseLevel]);
  59
  60    /* Check tree can hold all active levels.  Check tree matches
  61     * target, imageFormat, etc.
  62     *
  63     * For pre-gen4, we have to match first_level == tObj->BaseLevel,
  64     * because we don't have the control that gen4 does to make min/mag
  65     * determination happen at a nonzero (hardware) baselevel.  Because
  66     * of that, we just always relayout on baselevel change.
  67     */
  68    if (intelObj->mt &&
  69        (!intel_miptree_match_image(intelObj->mt, &firstImage->base.Base) ||
  70         intelObj->mt->first_level != tObj->BaseLevel ||
  71         intelObj->mt->last_level < intelObj->_MaxLevel)) {
  72       intel_miptree_release(&intelObj->mt);
  73    }
  74
  75
  76    /* May need to create a new tree:
  77     */
  78    if (!intelObj->mt) {
  79       intel_miptree_get_dimensions_for_image(&firstImage->base.Base,
  80                                              &width, &height, &depth);
  81
  82       perf_debug("Creating new %s %dx%dx%d %d..%d miptree to handle finalized "
  83                  "texture miptree.\n",
  84                  _mesa_get_format_name(firstImage->base.Base.TexFormat),
  85                  width, height, depth, tObj->BaseLevel, intelObj->_MaxLevel);
  86
  87       intelObj->mt = intel_miptree_create(intel,
  88                                           intelObj->base.Target,
  89                                           firstImage->base.Base.TexFormat,
  90                                           tObj->BaseLevel,
  91                                           intelObj->_MaxLevel,
  92                                           width,
  93                                           height,
  94                                           depth,
  95                                           true,
  96                                           0 /* num_samples */,
  97                                           INTEL_MSAA_LAYOUT_NONE);
  98       if (!intelObj->mt)
  99          return false;
 100    }
 101
 102    /* Pull in any images not in the object's tree:
 103     */
 104    nr_faces = _mesa_num_tex_faces(intelObj->base.Target);
 105    for (face = 0; face < nr_faces; face++) {
 106       for (i = tObj->BaseLevel; i <= intelObj->_MaxLevel; i++) {
 107          struct intel_texture_image *intelImage =
 108             intel_texture_image(intelObj->base.Image[face][i]);
 109          /* skip too small size mipmap */
 110          if (intelImage == NULL)
 111                  break;
 112
 113          if (intelObj->mt != intelImage->mt) {
 114             intel_miptree_copy_teximage(intel, intelImage, intelObj->mt);
 115          }
 116       }
 117    }
 118
 119    return true;
 120 }
 121
 122 /**
 123  * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
 124  */
 125 static void
 126 intel_tex_map_image_for_swrast(struct intel_context *intel,
 127                                struct intel_texture_image *intel_image,
 128                                GLbitfield mode)
 129 {
 130    int level;
 131    int face;
 132    struct intel_mipmap_tree *mt;
 133    unsigned int x, y;
 134
 135    if (!intel_image || !intel_image->mt)
 136       return;
 137
 138    level = intel_image->base.Base.Level;
 139    face = intel_image->base.Base.Face;
 140    mt = intel_image->mt;
 141
 142    for (int i = 0; i < mt->level[level].depth; i++)
 143       intel_miptree_slice_resolve_depth(intel, mt, level, i);
 144
 145    if (mt->target == GL_TEXTURE_3D ||
 146        mt->target == GL_TEXTURE_2D_ARRAY ||
 147        mt->target == GL_TEXTURE_1D_ARRAY) {
 148       int i;
 149
 150       /* ImageOffsets[] is only used for swrast's fetch_texel_3d, so we can't
 151        * share code with the normal path.
 152        */
 153       for (i = 0; i < mt->level[level].depth; i++) {
 154          intel_miptree_get_image_offset(mt, level, i, &x, &y);
 155          intel_image->base.ImageOffsets[i] = x + y * mt->region->pitch;
 156       }
 157
 158       DBG("%s \n", __FUNCTION__);
 159
 160       intel_image->base.Map = intel_region_map(intel, mt->region, mode);
 161    } else {
 162       assert(intel_image->base.Base.Depth == 1);
 163       intel_miptree_get_image_offset(mt, level, face, &x, &y);
 164
 165       DBG("%s: (%d,%d) -> (%d, %d)/%d\n",
 166           __FUNCTION__, face, level, x, y, mt->region->pitch * mt->cpp);
 167
 168       intel_image->base.Map = intel_region_map(intel, mt->region, mode) +
 169          (x + y * mt->region->pitch) * mt->cpp;
 170    }
 171
 172    intel_image->base.RowStride = mt->region->pitch;
 173 }
 174
 175 static void
 176 intel_tex_unmap_image_for_swrast(struct intel_context *intel,
 177                                  struct intel_texture_image *intel_image)
 178 {
 179    if (intel_image && intel_image->mt) {
 180       intel_region_unmap(intel, intel_image->mt->region);
 181       intel_image->base.Map = NULL;
 182    }
 183 }
 184
 185 /**
 186  * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
 187  */
 188 void
 189 intel_tex_map_images(struct intel_context *intel,
 190                      struct intel_texture_object *intelObj,
 191                      GLbitfield mode)
 192 {
 193    GLuint nr_faces = _mesa_num_tex_faces(intelObj->base.Target);
 194    int i, face;
 195
 196    DBG("%s\n", __FUNCTION__);
 197
 198    for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++) {
 199       for (face = 0; face < nr_faces; face++) {
 200          struct intel_texture_image *intel_image =
 201             intel_texture_image(intelObj->base.Image[face][i]);
 202
 203          intel_tex_map_image_for_swrast(intel, intel_image, mode);
 204       }
 205    }
 206 }
 207
 208 void
 209 intel_tex_unmap_images(struct intel_context *intel,
 210                        struct intel_texture_object *intelObj)
 211 {
 212    GLuint nr_faces = _mesa_num_tex_faces(intelObj->base.Target);
 213    int i, face;
 214
 215    for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++) {
 216       for (face = 0; face < nr_faces; face++) {
 217          struct intel_texture_image *intel_image =
 218             intel_texture_image(intelObj->base.Image[face][i]);
 219
 220          intel_tex_unmap_image_for_swrast(intel, intel_image);
 221       }
 222    }
 223 }