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_blit.h"
   8 #include "intel_tex.h"
   9 #include "intel_tex_layout.h"
  10
  11 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  12
  13 /**
  14  * When validating, we only care about the texture images that could
  15  * be seen, so for non-mipmapped modes we want to ignore everything
  16  * but BaseLevel.
  17  */
  18 static void
  19 intel_update_max_level(struct intel_texture_object *intelObj,
  20                        struct gl_sampler_object *sampler)
  21 {
  22    struct gl_texture_object *tObj = &intelObj->base;
  23
  24    if (sampler->MinFilter == GL_NEAREST ||
  25        sampler->MinFilter == GL_LINEAR) {
  26       intelObj->_MaxLevel = tObj->BaseLevel;
  27    } else {
  28       intelObj->_MaxLevel = tObj->_MaxLevel;
  29    }
  30 }
  31
  32 /*
  33  */
  34 GLuint
  35 intel_finalize_mipmap_tree(struct intel_context *intel, GLuint unit)
  36 {
  37    struct gl_context *ctx = &intel->ctx;
  38    struct gl_texture_object *tObj = intel->ctx.Texture.Unit[unit]._Current;
  39    struct intel_texture_object *intelObj = intel_texture_object(tObj);
  40    struct gl_sampler_object *sampler = _mesa_get_samplerobj(ctx, unit);
  41    GLuint face, i;
  42    GLuint nr_faces = 0;
  43    struct intel_texture_image *firstImage;
  44    int width, height, depth;
  45
  46    /* We know/require this is true by now:
  47     */
  48    assert(intelObj->base._Complete);
  49
  50    /* What levels must the tree include at a minimum?
  51     */
  52    intel_update_max_level(intelObj, sampler);
  53    firstImage = intel_texture_image(tObj->Image[0][tObj->BaseLevel]);
  54
  55    /* Fallback case:
  56     */
  57    if (firstImage->base.Base.Border) {
  58       intel_miptree_release(&intelObj->mt);
  59       return false;
  60    }
  61
  62    intel_miptree_get_dimensions_for_image(&firstImage->base.Base,
  63                                           &width, &height, &depth);
  64
  65    /* Check tree can hold all active levels.  Check tree matches
  66     * target, imageFormat, etc.
  67     *
  68     * For pre-gen4, we have to match first_level == tObj->BaseLevel,
  69     * because we don't have the control that gen4 does to make min/mag
  70     * determination happen at a nonzero (hardware) baselevel.  Because
  71     * of that, we just always relayout on baselevel change.
  72     */
  73    if (intelObj->mt &&
  74        (intelObj->mt->target != intelObj->base.Target ||
  75         intelObj->mt->format != firstImage->base.Base.TexFormat ||
  76         intelObj->mt->first_level != tObj->BaseLevel ||
  77         intelObj->mt->last_level < intelObj->_MaxLevel ||
  78         intelObj->mt->width0 != width ||
  79         intelObj->mt->height0 != height ||
  80         intelObj->mt->depth0 != depth)) {
  81       intel_miptree_release(&intelObj->mt);
  82    }
  83
  84
  85    /* May need to create a new tree:
  86     */
  87    if (!intelObj->mt) {
  88       intelObj->mt = intel_miptree_create(intel,
  89                                           intelObj->base.Target,
  90                                           firstImage->base.Base.TexFormat,
  91                                           tObj->BaseLevel,
  92                                           intelObj->_MaxLevel,
  93                                           width,
  94                                           height,
  95                                           depth,
  96                                           true);
  97       if (!intelObj->mt)
  98          return false;
  99    }
 100
 101    /* Pull in any images not in the object's tree:
 102     */
 103    nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
 104    for (face = 0; face < nr_faces; face++) {
 105       for (i = tObj->BaseLevel; i <= intelObj->_MaxLevel; i++) {
 106          struct intel_texture_image *intelImage =
 107             intel_texture_image(intelObj->base.Image[face][i]);
 108          /* skip too small size mipmap */
 109          if (intelImage == NULL)
 110                  break;
 111          /* Need to import images in main memory or held in other trees.
 112           * If it's a render target, then its data isn't needed to be in
 113           * the object tree (otherwise we'd be FBO incomplete), and we need
 114           * to keep track of the image's MT as needing to be pulled in still,
 115           * or we'll lose the rendering that's done to it.
 116           */
 117          if (intelObj->mt != intelImage->mt &&
 118              !intelImage->used_as_render_target) {
 119             intel_miptree_copy_teximage(intel, intelImage, intelObj->mt);
 120          }
 121       }
 122    }
 123
 124    return true;
 125 }
 126
 127 /**
 128  * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
 129  */
 130 static void
 131 intel_tex_map_image_for_swrast(struct intel_context *intel,
 132                                struct intel_texture_image *intel_image,
 133                                GLbitfield mode)
 134 {
 135    int level = intel_image->base.Base.Level;
 136    int face = intel_image->base.Base.Face;
 137    struct intel_mipmap_tree *mt;
 138    unsigned int x, y;
 139
 140    if (!intel_image || !intel_image->mt)
 141       return;
 142
 143    mt = intel_image->mt;
 144
 145    if (mt->target == GL_TEXTURE_3D ||
 146        mt->target == GL_TEXTURE_2D_ARRAY ||
 147        mt->target == GL_TEXTURE_1D_ARRAY) {
 148       int i;
 149
 150       if (mt->target == GL_TEXTURE_2D_ARRAY ||
 151           mt->target == GL_TEXTURE_1D_ARRAY) {
 152          /* Mesa only allocates one entry for these, but we really do have an
 153           * offset per depth.
 154           */
 155          free(intel_image->base.Base.ImageOffsets);
 156          intel_image->base.Base.ImageOffsets = malloc(mt->level[level].depth *
 157                                                       sizeof(GLuint));
 158       }
 159
 160       /* ImageOffsets[] is only used for swrast's fetch_texel_3d, so we can't
 161        * share code with the normal path.
 162        */
 163       for (i = 0; i < mt->level[level].depth; i++) {
 164          intel_miptree_get_image_offset(mt, level, face, i, &x, &y);
 165          intel_image->base.Base.ImageOffsets[i] = x + y * mt->region->pitch;
 166       }
 167
 168       DBG("%s \n", __FUNCTION__);
 169
 170       intel_image->base.Base.Data = intel_region_map(intel, mt->region, mode);
 171    } else {
 172       assert(mt->level[level].depth == 1);
 173       intel_miptree_get_image_offset(mt, level, face, 0, &x, &y);
 174       intel_image->base.Base.ImageOffsets[0] = 0;
 175
 176       DBG("%s: (%d,%d) -> (%d, %d)/%d\n",
 177           __FUNCTION__, face, level, x, y, mt->region->pitch * mt->cpp);
 178
 179       intel_image->base.Base.Data = intel_region_map(intel, mt->region, mode) +
 180          (x + y * mt->region->pitch) * mt->cpp;
 181    }
 182
 183    intel_image->base.Base.RowStride = mt->region->pitch;
 184 }
 185
 186 static void
 187 intel_tex_unmap_image_for_swrast(struct intel_context *intel,
 188                                  struct intel_texture_image *intel_image)
 189 {
 190    if (intel_image && intel_image->mt) {
 191       intel_region_unmap(intel, intel_image->mt->region);
 192       intel_image->base.Base.Data = NULL;
 193    }
 194 }
 195
 196 /**
 197  * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
 198  */
 199 void
 200 intel_tex_map_images(struct intel_context *intel,
 201                      struct intel_texture_object *intelObj,
 202                      GLbitfield mode)
 203 {
 204    GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
 205    int i, face;
 206
 207    DBG("%s\n", __FUNCTION__);
 208
 209    for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++) {
 210       for (face = 0; face < nr_faces; face++) {
 211          struct intel_texture_image *intel_image =
 212             intel_texture_image(intelObj->base.Image[face][i]);
 213
 214          intel_tex_map_image_for_swrast(intel, intel_image, mode);
 215       }
 216    }
 217 }
 218
 219 void
 220 intel_tex_unmap_images(struct intel_context *intel,
 221                        struct intel_texture_object *intelObj)
 222 {
 223    GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
 224    int i, face;
 225
 226    for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++) {
 227       for (face = 0; face < nr_faces; face++) {
 228          struct intel_texture_image *intel_image =
 229             intel_texture_image(intelObj->base.Image[face][i]);
 230
 231          intel_tex_unmap_image_for_swrast(intel, intel_image);
 232       }
 233    }
 234 }