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_tex.h"
   8
   9 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  10
  11 /**
  12  * When validating, we only care about the texture images that could
  13  * be seen, so for non-mipmapped modes we want to ignore everything
  14  * but BaseLevel.
  15  */
  16 static void
  17 intel_update_max_level(struct intel_context *intel,
  18                        struct intel_texture_object *intelObj,
  19                        struct gl_sampler_object *sampler)
  20 {
  21    struct gl_texture_object *tObj = &intelObj->base;
  22
  23    if (sampler->MinFilter == GL_NEAREST ||
  24        sampler->MinFilter == GL_LINEAR) {
  25       intelObj->_MaxLevel = tObj->BaseLevel;
  26    } else {
  27       intelObj->_MaxLevel = tObj->_MaxLevel;
  28    }
  29 }
  30
  31 /**
  32  * Copies the image's contents at its level into the object's miptree,
  33  * and updates the image to point at the object's miptree.
  34  */
  35 static void
  36 copy_image_data_to_tree(struct intel_context *intel,
  37                         struct intel_texture_object *intelObj,
  38                         struct intel_texture_image *intelImage)
  39 {
  40    if (intelImage->mt) {
  41       /* Copy potentially with the blitter:
  42        */
  43       intel_miptree_image_copy(intel,
  44                                intelObj->mt,
  45                                intelImage->face,
  46                                intelImage->level, intelImage->mt);
  47
  48       intel_miptree_release(intel, &intelImage->mt);
  49    }
  50    else {
  51       assert(intelImage->base.Data != NULL);
  52
  53       /* More straightforward upload.
  54        */
  55       intel_miptree_image_data(intel,
  56                                intelObj->mt,
  57                                intelImage->face,
  58                                intelImage->level,
  59                                intelImage->base.Data,
  60                                intelImage->base.RowStride,
  61                                intelImage->base.RowStride *
  62                                intelImage->base.Height);
  63       _mesa_align_free(intelImage->base.Data);
  64       intelImage->base.Data = NULL;
  65    }
  66
  67    intel_miptree_reference(&intelImage->mt, intelObj->mt);
  68 }
  69
  70
  71 /*
  72  */
  73 GLuint
  74 intel_finalize_mipmap_tree(struct intel_context *intel, GLuint unit)
  75 {
  76    struct gl_context *ctx = &intel->ctx;
  77    struct gl_texture_object *tObj = intel->ctx.Texture.Unit[unit]._Current;
  78    struct intel_texture_object *intelObj = intel_texture_object(tObj);
  79    struct gl_sampler_object *sampler = _mesa_get_samplerobj(ctx, unit);
  80    GLuint face, i;
  81    GLuint nr_faces = 0;
  82    struct intel_texture_image *firstImage;
  83
  84    /* We know/require this is true by now:
  85     */
  86    assert(intelObj->base._Complete);
  87
  88    /* What levels must the tree include at a minimum?
  89     */
  90    intel_update_max_level(intel, intelObj, sampler);
  91    firstImage = intel_texture_image(tObj->Image[0][tObj->BaseLevel]);
  92
  93    /* Fallback case:
  94     */
  95    if (firstImage->base.Border) {
  96       if (intelObj->mt) {
  97          intel_miptree_release(intel, &intelObj->mt);
  98       }
  99       return GL_FALSE;
 100    }
 101
 102    /* Check tree can hold all active levels.  Check tree matches
 103     * target, imageFormat, etc.
 104     *
 105     * For pre-gen4, we have to match first_level == tObj->BaseLevel,
 106     * because we don't have the control that gen4 does to make min/mag
 107     * determination happen at a nonzero (hardware) baselevel.  Because
 108     * of that, we just always relayout on baselevel change.
 109     */
 110    if (intelObj->mt &&
 111        (intelObj->mt->target != intelObj->base.Target ||
 112         intelObj->mt->format != firstImage->base.TexFormat ||
 113         intelObj->mt->first_level != tObj->BaseLevel ||
 114         intelObj->mt->last_level < intelObj->_MaxLevel ||
 115         intelObj->mt->width0 != firstImage->base.Width ||
 116         intelObj->mt->height0 != firstImage->base.Height ||
 117         intelObj->mt->depth0 != firstImage->base.Depth)) {
 118       intel_miptree_release(intel, &intelObj->mt);
 119    }
 120
 121
 122    /* May need to create a new tree:
 123     */
 124    if (!intelObj->mt) {
 125       intelObj->mt = intel_miptree_create(intel,
 126                                           intelObj->base.Target,
 127                                           firstImage->base.TexFormat,
 128                                           tObj->BaseLevel,
 129                                           intelObj->_MaxLevel,
 130                                           firstImage->base.Width,
 131                                           firstImage->base.Height,
 132                                           firstImage->base.Depth,
 133                                           GL_TRUE);
 134       if (!intelObj->mt)
 135          return GL_FALSE;
 136    }
 137
 138    /* Pull in any images not in the object's tree:
 139     */
 140    nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
 141    for (face = 0; face < nr_faces; face++) {
 142       for (i = tObj->BaseLevel; i <= intelObj->_MaxLevel; i++) {
 143          struct intel_texture_image *intelImage =
 144             intel_texture_image(intelObj->base.Image[face][i]);
 145          /* skip too small size mipmap */
 146          if (intelImage == NULL)
 147                  break;
 148          /* Need to import images in main memory or held in other trees.
 149           * If it's a render target, then its data isn't needed to be in
 150           * the object tree (otherwise we'd be FBO incomplete), and we need
 151           * to keep track of the image's MT as needing to be pulled in still,
 152           * or we'll lose the rendering that's done to it.
 153           */
 154          if (intelObj->mt != intelImage->mt &&
 155              !intelImage->used_as_render_target) {
 156             copy_image_data_to_tree(intel, intelObj, intelImage);
 157          }
 158       }
 159    }
 160
 161    return GL_TRUE;
 162 }
 163
 164 void
 165 intel_tex_map_level_images(struct intel_context *intel,
 166                            struct intel_texture_object *intelObj,
 167                            int level)
 168 {
 169    GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
 170    GLuint face;
 171
 172    for (face = 0; face < nr_faces; face++) {
 173       struct intel_texture_image *intelImage =
 174          intel_texture_image(intelObj->base.Image[face][level]);
 175
 176       if (intelImage && intelImage->mt) {
 177          intelImage->base.Data =
 178             intel_miptree_image_map(intel,
 179                                     intelImage->mt,
 180                                     intelImage->face,
 181                                     intelImage->level,
 182                                     &intelImage->base.RowStride,
 183                                     intelImage->base.ImageOffsets);
 184          /* convert stride to texels, not bytes */
 185          intelImage->base.RowStride /= intelImage->mt->cpp;
 186          /* intelImage->base.ImageStride /= intelImage->mt->cpp; */
 187       }
 188    }
 189 }
 190
 191 void
 192 intel_tex_unmap_level_images(struct intel_context *intel,
 193                              struct intel_texture_object *intelObj,
 194                              int level)
 195 {
 196    GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
 197    GLuint face;
 198
 199    for (face = 0; face < nr_faces; face++) {
 200       struct intel_texture_image *intelImage =
 201          intel_texture_image(intelObj->base.Image[face][level]);
 202
 203       if (intelImage && intelImage->mt) {
 204          intel_miptree_image_unmap(intel, intelImage->mt);
 205          intelImage->base.Data = NULL;
 206       }
 207    }
 208 }
 209
 210 void
 211 intel_tex_map_images(struct intel_context *intel,
 212                      struct intel_texture_object *intelObj)
 213 {
 214    int i;
 215
 216    DBG("%s\n", __FUNCTION__);
 217
 218    for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++)
 219       intel_tex_map_level_images(intel, intelObj, i);
 220 }
 221
 222 void
 223 intel_tex_unmap_images(struct intel_context *intel,
 224                        struct intel_texture_object *intelObj)
 225 {
 226    int i;
 227
 228    for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++)
 229       intel_tex_unmap_level_images(intel, intelObj, i);
 230 }