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       intelObj->mt = intel_miptree_create(intel,
  83                                           intelObj->base.Target,
  84                                           firstImage->base.Base.TexFormat,
  85                                           tObj->BaseLevel,
  86                                           intelObj->_MaxLevel,
  87                                           width,
  88                                           height,
  89                                           depth,
  90                                           true,
  91                                           0 /* num_samples */,
  92                                           INTEL_MSAA_LAYOUT_NONE);
  93       if (!intelObj->mt)
  94          return false;
  95    }
  96
  97    /* Pull in any images not in the object's tree:
  98     */
  99    nr_faces = _mesa_num_tex_faces(intelObj->base.Target);
 100    for (face = 0; face < nr_faces; face++) {
 101       for (i = tObj->BaseLevel; i <= intelObj->_MaxLevel; i++) {
 102          struct intel_texture_image *intelImage =
 103             intel_texture_image(intelObj->base.Image[face][i]);
 104          /* skip too small size mipmap */
 105          if (intelImage == NULL)
 106                  break;
 107
 108          if (intelObj->mt != intelImage->mt) {
 109             intel_miptree_copy_teximage(intel, intelImage, intelObj->mt);
 110          }
 111       }
 112    }
 113
 114    return true;
 115 }
 116
 117 /**
 118  * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
 119  */
 120 static void
 121 intel_tex_map_image_for_swrast(struct intel_context *intel,
 122                                struct intel_texture_image *intel_image,
 123                                GLbitfield mode)
 124 {
 125    int level;
 126    int face;
 127    struct intel_mipmap_tree *mt;
 128    unsigned int x, y;
 129
 130    if (!intel_image || !intel_image->mt)
 131       return;
 132
 133    level = intel_image->base.Base.Level;
 134    face = intel_image->base.Base.Face;
 135    mt = intel_image->mt;
 136
 137    for (int i = 0; i < mt->level[level].depth; i++)
 138       intel_miptree_slice_resolve_depth(intel, mt, level, i);
 139
 140    if (mt->target == GL_TEXTURE_3D ||
 141        mt->target == GL_TEXTURE_2D_ARRAY ||
 142        mt->target == GL_TEXTURE_1D_ARRAY) {
 143       int i;
 144
 145       /* ImageOffsets[] is only used for swrast's fetch_texel_3d, so we can't
 146        * share code with the normal path.
 147        */
 148       for (i = 0; i < mt->level[level].depth; i++) {
 149          intel_miptree_get_image_offset(mt, level, i, &x, &y);
 150          intel_image->base.ImageOffsets[i] = x + y * mt->region->pitch;
 151       }
 152
 153       DBG("%s \n", __FUNCTION__);
 154
 155       intel_image->base.Map = intel_region_map(intel, mt->region, mode);
 156    } else {
 157       assert(intel_image->base.Base.Depth == 1);
 158       intel_miptree_get_image_offset(mt, level, face, &x, &y);
 159
 160       DBG("%s: (%d,%d) -> (%d, %d)/%d\n",
 161           __FUNCTION__, face, level, x, y, mt->region->pitch * mt->cpp);
 162
 163       intel_image->base.Map = intel_region_map(intel, mt->region, mode) +
 164          (x + y * mt->region->pitch) * mt->cpp;
 165    }
 166
 167    intel_image->base.RowStride = mt->region->pitch;
 168 }
 169
 170 static void
 171 intel_tex_unmap_image_for_swrast(struct intel_context *intel,
 172                                  struct intel_texture_image *intel_image)
 173 {
 174    if (intel_image && intel_image->mt) {
 175       intel_region_unmap(intel, intel_image->mt->region);
 176       intel_image->base.Map = NULL;
 177    }
 178 }
 179
 180 /**
 181  * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
 182  */
 183 void
 184 intel_tex_map_images(struct intel_context *intel,
 185                      struct intel_texture_object *intelObj,
 186                      GLbitfield mode)
 187 {
 188    GLuint nr_faces = _mesa_num_tex_faces(intelObj->base.Target);
 189    int i, face;
 190
 191    DBG("%s\n", __FUNCTION__);
 192
 193    for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++) {
 194       for (face = 0; face < nr_faces; face++) {
 195          struct intel_texture_image *intel_image =
 196             intel_texture_image(intelObj->base.Image[face][i]);
 197
 198          intel_tex_map_image_for_swrast(intel, intel_image, mode);
 199       }
 200    }
 201 }
 202
 203 void
 204 intel_tex_unmap_images(struct intel_context *intel,
 205                        struct intel_texture_object *intelObj)
 206 {
 207    GLuint nr_faces = _mesa_num_tex_faces(intelObj->base.Target);
 208    int i, face;
 209
 210    for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++) {
 211       for (face = 0; face < nr_faces; face++) {
 212          struct intel_texture_image *intel_image =
 213             intel_texture_image(intelObj->base.Image[face][i]);
 214
 215          intel_tex_unmap_image_for_swrast(intel, intel_image);
 216       }
 217    }
 218 }