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                                           INTEL_MSAA_LAYOUT_NONE);
  92       if (!intelObj->mt)
  93          return false;
  94    }
  95
  96    /* Pull in any images not in the object's tree:
  97     */
  98    nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
  99    for (face = 0; face < nr_faces; face++) {
 100       for (i = tObj->BaseLevel; i <= intelObj->_MaxLevel; i++) {
 101          struct intel_texture_image *intelImage =
 102             intel_texture_image(intelObj->base.Image[face][i]);
 103          /* skip too small size mipmap */
 104          if (intelImage == NULL)
 105                  break;
 106
 107          if (intelObj->mt != intelImage->mt) {
 108             intel_miptree_copy_teximage(intel, intelImage, intelObj->mt);
 109          }
 110       }
 111    }
 112
 113    return true;
 114 }
 115
 116 /**
 117  * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
 118  */
 119 static void
 120 intel_tex_map_image_for_swrast(struct intel_context *intel,
 121                                struct intel_texture_image *intel_image,
 122                                GLbitfield mode)
 123 {
 124    int level;
 125    int face;
 126    struct intel_mipmap_tree *mt;
 127    unsigned int x, y;
 128
 129    if (!intel_image || !intel_image->mt)
 130       return;
 131
 132    level = intel_image->base.Base.Level;
 133    face = intel_image->base.Base.Face;
 134    mt = intel_image->mt;
 135
 136    if (mt->target == GL_TEXTURE_3D ||
 137        mt->target == GL_TEXTURE_2D_ARRAY ||
 138        mt->target == GL_TEXTURE_1D_ARRAY) {
 139       int i;
 140
 141       /* ImageOffsets[] is only used for swrast's fetch_texel_3d, so we can't
 142        * share code with the normal path.
 143        */
 144       for (i = 0; i < mt->level[level].depth; i++) {
 145          intel_miptree_get_image_offset(mt, level, face, i, &x, &y);
 146          intel_image->base.ImageOffsets[i] = x + y * mt->region->pitch;
 147       }
 148
 149       DBG("%s \n", __FUNCTION__);
 150
 151       intel_image->base.Map = intel_region_map(intel, mt->region, mode);
 152    } else {
 153       assert(intel_image->base.Base.Depth == 1);
 154       intel_miptree_get_image_offset(mt, level, face, 0, &x, &y);
 155
 156       DBG("%s: (%d,%d) -> (%d, %d)/%d\n",
 157           __FUNCTION__, face, level, x, y, mt->region->pitch * mt->cpp);
 158
 159       intel_image->base.Map = intel_region_map(intel, mt->region, mode) +
 160          (x + y * mt->region->pitch) * mt->cpp;
 161    }
 162
 163    intel_image->base.RowStride = mt->region->pitch;
 164 }
 165
 166 static void
 167 intel_tex_unmap_image_for_swrast(struct intel_context *intel,
 168                                  struct intel_texture_image *intel_image)
 169 {
 170    if (intel_image && intel_image->mt) {
 171       intel_region_unmap(intel, intel_image->mt->region);
 172       intel_image->base.Map = NULL;
 173    }
 174 }
 175
 176 /**
 177  * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
 178  */
 179 void
 180 intel_tex_map_images(struct intel_context *intel,
 181                      struct intel_texture_object *intelObj,
 182                      GLbitfield mode)
 183 {
 184    GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
 185    int i, face;
 186
 187    DBG("%s\n", __FUNCTION__);
 188
 189    for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++) {
 190       for (face = 0; face < nr_faces; face++) {
 191          struct intel_texture_image *intel_image =
 192             intel_texture_image(intelObj->base.Image[face][i]);
 193
 194          intel_tex_map_image_for_swrast(intel, intel_image, mode);
 195       }
 196    }
 197 }
 198
 199 void
 200 intel_tex_unmap_images(struct intel_context *intel,
 201                        struct intel_texture_object *intelObj)
 202 {
 203    GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
 204    int i, face;
 205
 206    for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++) {
 207       for (face = 0; face < nr_faces; face++) {
 208          struct intel_texture_image *intel_image =
 209             intel_texture_image(intelObj->base.Image[face][i]);
 210
 211          intel_tex_unmap_image_for_swrast(intel, intel_image);
 212       }
 213    }
 214 }