src/mesa/drivers/dri/intel/intel_tex_validate.c

   1 #include "main/mtypes.h"
   2 #include "main/macros.h"
   3
   4 #include "intel_context.h"
   5 #include "intel_mipmap_tree.h"
   6 #include "intel_tex.h"
   7
   8 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
   9
  10 /**
  11  * When validating, we only care about the texture images that could
  12  * be seen, so for non-mipmapped modes we want to ignore everything
  13  * but BaseLevel.
  14  */
  15 static void
  16 intel_update_max_level(struct intel_context *intel,
  17                        struct intel_texture_object *intelObj)
  18 {
  19    struct gl_texture_object *tObj = &intelObj->base;
  20
  21    if (tObj->MinFilter == GL_NEAREST || tObj->MinFilter == GL_LINEAR) {
  22       intelObj->_MaxLevel = tObj->BaseLevel;
  23    } else {
  24       intelObj->_MaxLevel = tObj->_MaxLevel;
  25    }
  26 }
  27
  28 /**
  29  * Copies the image's contents at its level into the object's miptree,
  30  * and updates the image to point at the object's miptree.
  31  */
  32 static void
  33 copy_image_data_to_tree(struct intel_context *intel,
  34                         struct intel_texture_object *intelObj,
  35                         struct intel_texture_image *intelImage)
  36 {
  37    if (intelImage->mt) {
  38       /* Copy potentially with the blitter:
  39        */
  40       intel_miptree_image_copy(intel,
  41                                intelObj->mt,
  42                                intelImage->face,
  43                                intelImage->level, intelImage->mt);
  44
  45       intel_miptree_release(intel, &intelImage->mt);
  46    }
  47    else {
  48       assert(intelImage->base.Data != NULL);
  49
  50       /* More straightforward upload.
  51        */
  52       intel_miptree_image_data(intel,
  53                                intelObj->mt,
  54                                intelImage->face,
  55                                intelImage->level,
  56                                intelImage->base.Data,
  57                                intelImage->base.RowStride,
  58                                intelImage->base.RowStride *
  59                                intelImage->base.Height);
  60       _mesa_align_free(intelImage->base.Data);
  61       intelImage->base.Data = NULL;
  62    }
  63
  64    intel_miptree_reference(&intelImage->mt, intelObj->mt);
  65 }
  66
  67
  68 /*
  69  */
  70 GLuint
  71 intel_finalize_mipmap_tree(struct intel_context *intel, GLuint unit)
  72 {
  73    struct gl_texture_object *tObj = intel->ctx.Texture.Unit[unit]._Current;
  74    struct intel_texture_object *intelObj = intel_texture_object(tObj);
  75    int comp_byte = 0;
  76    int cpp;
  77    GLuint face, i;
  78    GLuint nr_faces = 0;
  79    struct intel_texture_image *firstImage;
  80
  81    /* We know/require this is true by now:
  82     */
  83    assert(intelObj->base._Complete);
  84
  85    /* What levels must the tree include at a minimum?
  86     */
  87    intel_update_max_level(intel, intelObj);
  88    firstImage = intel_texture_image(tObj->Image[0][tObj->BaseLevel]);
  89
  90    /* Fallback case:
  91     */
  92    if (firstImage->base.Border) {
  93       if (intelObj->mt) {
  94          intel_miptree_release(intel, &intelObj->mt);
  95       }
  96       return GL_FALSE;
  97    }
  98
  99
 100    /* If both firstImage and intelObj have a tree which can contain
 101     * all active images, favour firstImage.  Note that because of the
 102     * completeness requirement, we know that the image dimensions
 103     * will match.
 104     */
 105    if (firstImage->mt &&
 106        firstImage->mt != intelObj->mt &&
 107        firstImage->mt->levels >= intelObj->_MaxLevel) {
 108
 109       if (intelObj->mt)
 110          intel_miptree_release(intel, &intelObj->mt);
 111
 112       intel_miptree_reference(&intelObj->mt, firstImage->mt);
 113    }
 114
 115    if (_mesa_is_format_compressed(firstImage->base.TexFormat)) {
 116       comp_byte = intel_compressed_num_bytes(firstImage->base.TexFormat);
 117       cpp = comp_byte;
 118    }
 119    else
 120       cpp = _mesa_get_format_bytes(firstImage->base.TexFormat);
 121
 122    /* Check tree can hold all active levels.  Check tree matches
 123     * target, imageFormat, etc.
 124     *
 125     * XXX: For some layouts (eg i945?), the test might have to be
 126     * first_level == firstLevel, as the tree isn't valid except at the
 127     * original start level.  Hope to get around this by
 128     * programming minLod, maxLod, baseLevel into the hardware and
 129     * leaving the tree alone.
 130     */
 131    if (intelObj->mt &&
 132        (intelObj->mt->target != intelObj->base.Target ||
 133         intelObj->mt->internal_format != firstImage->base.InternalFormat ||
 134         intelObj->mt->levels <= intelObj->_MaxLevel ||
 135         intelObj->mt->width0 != firstImage->mt->width0 ||
 136         intelObj->mt->height0 != firstImage->mt->height0 ||
 137         intelObj->mt->depth0 != firstImage->mt->depth0 ||
 138         intelObj->mt->cpp != cpp ||
 139         intelObj->mt->compressed != _mesa_is_format_compressed(firstImage->base.TexFormat))) {
 140       intel_miptree_release(intel, &intelObj->mt);
 141    }
 142
 143
 144    /* May need to create a new tree:
 145     */
 146    if (!intelObj->mt) {
 147       intelObj->mt = intel_miptree_create_for_teximage(intel, intelObj,
 148                                                        firstImage,
 149                                                        GL_TRUE);
 150    }
 151
 152    /* Pull in any images not in the object's tree:
 153     */
 154    nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
 155    for (face = 0; face < nr_faces; face++) {
 156       for (i = tObj->BaseLevel; i <= intelObj->_MaxLevel; i++) {
 157          struct intel_texture_image *intelImage =
 158             intel_texture_image(intelObj->base.Image[face][i]);
 159          /* skip too small size mipmap */
 160          if (intelImage == NULL)
 161                  break;
 162          /* Need to import images in main memory or held in other trees.
 163           * If it's a render target, then its data isn't needed to be in
 164           * the object tree (otherwise we'd be FBO incomplete), and we need
 165           * to keep track of the image's MT as needing to be pulled in still,
 166           * or we'll lose the rendering that's done to it.
 167           */
 168          if (intelObj->mt != intelImage->mt &&
 169              !intelImage->used_as_render_target) {
 170             copy_image_data_to_tree(intel, intelObj, intelImage);
 171          }
 172       }
 173    }
 174
 175    return GL_TRUE;
 176 }
 177
 178 void
 179 intel_tex_map_level_images(struct intel_context *intel,
 180                            struct intel_texture_object *intelObj,
 181                            int level)
 182 {
 183    GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
 184    GLuint face;
 185
 186    for (face = 0; face < nr_faces; face++) {
 187       struct intel_texture_image *intelImage =
 188          intel_texture_image(intelObj->base.Image[face][level]);
 189
 190       if (intelImage && intelImage->mt) {
 191          intelImage->base.Data =
 192             intel_miptree_image_map(intel,
 193                                     intelImage->mt,
 194                                     intelImage->face,
 195                                     intelImage->level,
 196                                     &intelImage->base.RowStride,
 197                                     intelImage->base.ImageOffsets);
 198          /* convert stride to texels, not bytes */
 199          intelImage->base.RowStride /= intelImage->mt->cpp;
 200          /* intelImage->base.ImageStride /= intelImage->mt->cpp; */
 201       }
 202    }
 203 }
 204
 205 void
 206 intel_tex_unmap_level_images(struct intel_context *intel,
 207                              struct intel_texture_object *intelObj,
 208                              int level)
 209 {
 210    GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
 211    GLuint face;
 212
 213    for (face = 0; face < nr_faces; face++) {
 214       struct intel_texture_image *intelImage =
 215          intel_texture_image(intelObj->base.Image[face][level]);
 216
 217       if (intelImage && intelImage->mt) {
 218          intel_miptree_image_unmap(intel, intelImage->mt);
 219          intelImage->base.Data = NULL;
 220       }
 221    }
 222 }
 223
 224 void
 225 intel_tex_map_images(struct intel_context *intel,
 226                      struct intel_texture_object *intelObj)
 227 {
 228    int i;
 229
 230    DBG("%s\n", __FUNCTION__);
 231
 232    for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++)
 233       intel_tex_map_level_images(intel, intelObj, i);
 234 }
 235
 236 void
 237 intel_tex_unmap_images(struct intel_context *intel,
 238                        struct intel_texture_object *intelObj)
 239 {
 240    int i;
 241
 242    for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++)
 243       intel_tex_unmap_level_images(intel, intelObj, i);
 244 }