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    /* We know/require this is true by now:
  47     */
  48    assert(intelObj->base._Complete);
  49
  50    /* What levels must the tree include at a minimum?
  51     */
  52    intel_update_max_level(intelObj, sampler);
  53    firstImage = intel_texture_image(tObj->Image[0][tObj->BaseLevel]);
  54
  55    /* Check tree can hold all active levels.  Check tree matches
  56     * target, imageFormat, etc.
  57     *
  58     * For pre-gen4, we have to match first_level == tObj->BaseLevel,
  59     * because we don't have the control that gen4 does to make min/mag
  60     * determination happen at a nonzero (hardware) baselevel.  Because
  61     * of that, we just always relayout on baselevel change.
  62     */
  63    if (intelObj->mt &&
  64        (!intel_miptree_match_image(intelObj->mt, &firstImage->base.Base) ||
  65         intelObj->mt->first_level != tObj->BaseLevel ||
  66         intelObj->mt->last_level < intelObj->_MaxLevel)) {
  67       intel_miptree_release(&intelObj->mt);
  68    }
  69
  70
  71    /* May need to create a new tree:
  72     */
  73    if (!intelObj->mt) {
  74       intel_miptree_get_dimensions_for_image(&firstImage->base.Base,
  75                                              &width, &height, &depth);
  76
  77       intelObj->mt = intel_miptree_create(intel,
  78                                           intelObj->base.Target,
  79                                           firstImage->base.Base.TexFormat,
  80                                           tObj->BaseLevel,
  81                                           intelObj->_MaxLevel,
  82                                           width,
  83                                           height,
  84                                           depth,
  85                                           true);
  86       if (!intelObj->mt)
  87          return false;
  88    }
  89
  90    /* Pull in any images not in the object's tree:
  91     */
  92    nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
  93    for (face = 0; face < nr_faces; face++) {
  94       for (i = tObj->BaseLevel; i <= intelObj->_MaxLevel; i++) {
  95          struct intel_texture_image *intelImage =
  96             intel_texture_image(intelObj->base.Image[face][i]);
  97          /* skip too small size mipmap */
  98          if (intelImage == NULL)
  99                  break;
 100
 101          if (intelObj->mt != intelImage->mt) {
 102             intel_miptree_copy_teximage(intel, intelImage, intelObj->mt);
 103          }
 104       }
 105    }
 106
 107    return true;
 108 }
 109
 110 /**
 111  * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
 112  */
 113 static void
 114 intel_tex_map_image_for_swrast(struct intel_context *intel,
 115                                struct intel_texture_image *intel_image,
 116                                GLbitfield mode)
 117 {
 118    int level;
 119    int face;
 120    struct intel_mipmap_tree *mt;
 121    unsigned int x, y;
 122
 123    if (!intel_image || !intel_image->mt)
 124       return;
 125
 126    level = intel_image->base.Base.Level;
 127    face = intel_image->base.Base.Face;
 128    mt = intel_image->mt;
 129
 130    if (mt->target == GL_TEXTURE_3D ||
 131        mt->target == GL_TEXTURE_2D_ARRAY ||
 132        mt->target == GL_TEXTURE_1D_ARRAY) {
 133       int i;
 134
 135       /* ImageOffsets[] is only used for swrast's fetch_texel_3d, so we can't
 136        * share code with the normal path.
 137        */
 138       for (i = 0; i < mt->level[level].depth; i++) {
 139          intel_miptree_get_image_offset(mt, level, face, i, &x, &y);
 140          intel_image->base.ImageOffsets[i] = x + y * mt->region->pitch;
 141       }
 142
 143       DBG("%s \n", __FUNCTION__);
 144
 145       intel_image->base.Map = intel_region_map(intel, mt->region, mode);
 146    } else {
 147       assert(intel_image->base.Base.Depth == 1);
 148       intel_miptree_get_image_offset(mt, level, face, 0, &x, &y);
 149
 150       DBG("%s: (%d,%d) -> (%d, %d)/%d\n",
 151           __FUNCTION__, face, level, x, y, mt->region->pitch * mt->cpp);
 152
 153       intel_image->base.Map = intel_region_map(intel, mt->region, mode) +
 154          (x + y * mt->region->pitch) * mt->cpp;
 155    }
 156
 157    intel_image->base.RowStride = mt->region->pitch;
 158 }
 159
 160 static void
 161 intel_tex_unmap_image_for_swrast(struct intel_context *intel,
 162                                  struct intel_texture_image *intel_image)
 163 {
 164    if (intel_image && intel_image->mt) {
 165       intel_region_unmap(intel, intel_image->mt->region);
 166       intel_image->base.Map = NULL;
 167    }
 168 }
 169
 170 /**
 171  * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
 172  */
 173 void
 174 intel_tex_map_images(struct intel_context *intel,
 175                      struct intel_texture_object *intelObj,
 176                      GLbitfield mode)
 177 {
 178    GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
 179    int i, face;
 180
 181    DBG("%s\n", __FUNCTION__);
 182
 183    for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++) {
 184       for (face = 0; face < nr_faces; face++) {
 185          struct intel_texture_image *intel_image =
 186             intel_texture_image(intelObj->base.Image[face][i]);
 187
 188          intel_tex_map_image_for_swrast(intel, intel_image, mode);
 189       }
 190    }
 191 }
 192
 193 void
 194 intel_tex_unmap_images(struct intel_context *intel,
 195                        struct intel_texture_object *intelObj)
 196 {
 197    GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
 198    int i, face;
 199
 200    for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++) {
 201       for (face = 0; face < nr_faces; face++) {
 202          struct intel_texture_image *intel_image =
 203             intel_texture_image(intelObj->base.Image[face][i]);
 204
 205          intel_tex_unmap_image_for_swrast(intel, intel_image);
 206       }
 207    }
 208 }