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