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