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