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    int comp_byte = 0;
  81    int cpp;
  82    GLuint face, i;
  83    GLuint nr_faces = 0;
  84    struct intel_texture_image *firstImage;
  85
  86    /* We know/require this is true by now:
  87     */
  88    assert(intelObj->base._Complete);
  89
  90    /* What levels must the tree include at a minimum?
  91     */
  92    intel_update_max_level(intel, intelObj, sampler);
  93    firstImage = intel_texture_image(tObj->Image[0][tObj->BaseLevel]);
  94
  95    /* Fallback case:
  96     */
  97    if (firstImage->base.Border) {
  98       if (intelObj->mt) {
  99          intel_miptree_release(intel, &intelObj->mt);
 100       }
 101       return GL_FALSE;
 102    }
 103
 104    if (_mesa_is_format_compressed(firstImage->base.TexFormat)) {
 105       comp_byte = intel_compressed_num_bytes(firstImage->base.TexFormat);
 106       cpp = comp_byte;
 107    }
 108    else
 109       cpp = _mesa_get_format_bytes(firstImage->base.TexFormat);
 110
 111    /* Check tree can hold all active levels.  Check tree matches
 112     * target, imageFormat, etc.
 113     *
 114     * For pre-gen4, we have to match first_level == tObj->BaseLevel,
 115     * because we don't have the control that gen4 does to make min/mag
 116     * determination happen at a nonzero (hardware) baselevel.  Because
 117     * of that, we just always relayout on baselevel change.
 118     */
 119    if (intelObj->mt &&
 120        (intelObj->mt->target != intelObj->base.Target ||
 121         intelObj->mt->format != firstImage->base.TexFormat ||
 122         intelObj->mt->first_level != tObj->BaseLevel ||
 123         intelObj->mt->last_level < intelObj->_MaxLevel ||
 124         intelObj->mt->width0 != firstImage->base.Width ||
 125         intelObj->mt->height0 != firstImage->base.Height ||
 126         intelObj->mt->depth0 != firstImage->base.Depth)) {
 127       intel_miptree_release(intel, &intelObj->mt);
 128    }
 129
 130
 131    /* May need to create a new tree:
 132     */
 133    if (!intelObj->mt) {
 134       intelObj->mt = intel_miptree_create(intel,
 135                                           intelObj->base.Target,
 136                                           firstImage->base.TexFormat,
 137                                           tObj->BaseLevel,
 138                                           intelObj->_MaxLevel,
 139                                           firstImage->base.Width,
 140                                           firstImage->base.Height,
 141                                           firstImage->base.Depth,
 142                                           cpp,
 143                                           comp_byte,
 144                                           GL_TRUE);
 145       if (!intelObj->mt)
 146          return GL_FALSE;
 147    }
 148
 149    /* Pull in any images not in the object's tree:
 150     */
 151    nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
 152    for (face = 0; face < nr_faces; face++) {
 153       for (i = tObj->BaseLevel; i <= intelObj->_MaxLevel; i++) {
 154          struct intel_texture_image *intelImage =
 155             intel_texture_image(intelObj->base.Image[face][i]);
 156          /* skip too small size mipmap */
 157          if (intelImage == NULL)
 158                  break;
 159          /* Need to import images in main memory or held in other trees.
 160           * If it's a render target, then its data isn't needed to be in
 161           * the object tree (otherwise we'd be FBO incomplete), and we need
 162           * to keep track of the image's MT as needing to be pulled in still,
 163           * or we'll lose the rendering that's done to it.
 164           */
 165          if (intelObj->mt != intelImage->mt &&
 166              !intelImage->used_as_render_target) {
 167             copy_image_data_to_tree(intel, intelObj, intelImage);
 168          }
 169       }
 170    }
 171
 172    return GL_TRUE;
 173 }
 174
 175 void
 176 intel_tex_map_level_images(struct intel_context *intel,
 177                            struct intel_texture_object *intelObj,
 178                            int level)
 179 {
 180    GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
 181    GLuint face;
 182
 183    for (face = 0; face < nr_faces; face++) {
 184       struct intel_texture_image *intelImage =
 185          intel_texture_image(intelObj->base.Image[face][level]);
 186
 187       if (intelImage && intelImage->mt) {
 188          intelImage->base.Data =
 189             intel_miptree_image_map(intel,
 190                                     intelImage->mt,
 191                                     intelImage->face,
 192                                     intelImage->level,
 193                                     &intelImage->base.RowStride,
 194                                     intelImage->base.ImageOffsets);
 195          /* convert stride to texels, not bytes */
 196          intelImage->base.RowStride /= intelImage->mt->cpp;
 197          /* intelImage->base.ImageStride /= intelImage->mt->cpp; */
 198       }
 199    }
 200 }
 201
 202 void
 203 intel_tex_unmap_level_images(struct intel_context *intel,
 204                              struct intel_texture_object *intelObj,
 205                              int level)
 206 {
 207    GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
 208    GLuint face;
 209
 210    for (face = 0; face < nr_faces; face++) {
 211       struct intel_texture_image *intelImage =
 212          intel_texture_image(intelObj->base.Image[face][level]);
 213
 214       if (intelImage && intelImage->mt) {
 215          intel_miptree_image_unmap(intel, intelImage->mt);
 216          intelImage->base.Data = NULL;
 217       }
 218    }
 219 }
 220
 221 void
 222 intel_tex_map_images(struct intel_context *intel,
 223                      struct intel_texture_object *intelObj)
 224 {
 225    int i;
 226
 227    DBG("%s\n", __FUNCTION__);
 228
 229    for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++)
 230       intel_tex_map_level_images(intel, intelObj, i);
 231 }
 232
 233 void
 234 intel_tex_unmap_images(struct intel_context *intel,
 235                        struct intel_texture_object *intelObj)
 236 {
 237    int i;
 238
 239    for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++)
 240       intel_tex_unmap_level_images(intel, intelObj, i);
 241 }