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    /* Check tree can hold all active levels.  Check tree matches
  56     * target, imageFormat, etc.
  57     *
  58     * For pre-gen4, we have to match first_level == tObj->BaseLevel,
  59     * because we don't have the control that gen4 does to make min/mag
  60     * determination happen at a nonzero (hardware) baselevel.  Because
  61     * of that, we just always relayout on baselevel change.
  62     */
  63    if (intelObj->mt &&
  64        (!intel_miptree_match_image(intelObj->mt, &firstImage->base.Base) ||
  65         intelObj->mt->target != intelObj->base.Target ||
  66         intelObj->mt->first_level != tObj->BaseLevel ||
  67         intelObj->mt->last_level < intelObj->_MaxLevel)) {
  68       intel_miptree_release(&intelObj->mt);
  69    }
  70
  71
  72    /* May need to create a new tree:
  73     */
  74    if (!intelObj->mt) {
  75       intel_miptree_get_dimensions_for_image(&firstImage->base.Base,
  76                                              &width, &height, &depth);
  77
  78       intelObj->mt = intel_miptree_create(intel,
  79                                           intelObj->base.Target,
  80                                           firstImage->base.Base.TexFormat,
  81                                           tObj->BaseLevel,
  82                                           intelObj->_MaxLevel,
  83                                           width,
  84                                           height,
  85                                           depth,
  86                                           true);
  87       if (!intelObj->mt)
  88          return false;
  89    }
  90
  91    /* Pull in any images not in the object's tree:
  92     */
  93    nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
  94    for (face = 0; face < nr_faces; face++) {
  95       for (i = tObj->BaseLevel; i <= intelObj->_MaxLevel; i++) {
  96          struct intel_texture_image *intelImage =
  97             intel_texture_image(intelObj->base.Image[face][i]);
  98          /* skip too small size mipmap */
  99          if (intelImage == NULL)
 100                  break;
 101          /* Need to import images in main memory or held in other trees.
 102           * If it's a render target, then its data isn't needed to be in
 103           * the object tree (otherwise we'd be FBO incomplete), and we need
 104           * to keep track of the image's MT as needing to be pulled in still,
 105           * or we'll lose the rendering that's done to it.
 106           */
 107          if (intelObj->mt != intelImage->mt &&
 108              !intelImage->used_as_render_target) {
 109             intel_miptree_copy_teximage(intel, intelImage, intelObj->mt);
 110          }
 111       }
 112    }
 113
 114    return true;
 115 }
 116
 117 /**
 118  * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
 119  */
 120 static void
 121 intel_tex_map_image_for_swrast(struct intel_context *intel,
 122                                struct intel_texture_image *intel_image,
 123                                GLbitfield mode)
 124 {
 125    int level;
 126    int face;
 127    struct intel_mipmap_tree *mt;
 128    unsigned int x, y;
 129
 130    if (!intel_image || !intel_image->mt)
 131       return;
 132
 133    level = intel_image->base.Base.Level;
 134    face = intel_image->base.Base.Face;
 135    mt = intel_image->mt;
 136
 137    if (mt->target == GL_TEXTURE_3D ||
 138        mt->target == GL_TEXTURE_2D_ARRAY ||
 139        mt->target == GL_TEXTURE_1D_ARRAY) {
 140       int i;
 141
 142       /* ImageOffsets[] is only used for swrast's fetch_texel_3d, so we can't
 143        * share code with the normal path.
 144        */
 145       for (i = 0; i < mt->level[level].depth; i++) {
 146          intel_miptree_get_image_offset(mt, level, face, i, &x, &y);
 147          intel_image->base.ImageOffsets[i] = x + y * mt->region->pitch;
 148       }
 149
 150       DBG("%s \n", __FUNCTION__);
 151
 152       intel_image->base.Data = intel_region_map(intel, mt->region, mode);
 153    } else {
 154       assert(intel_image->base.Base.Depth == 1);
 155       intel_miptree_get_image_offset(mt, level, face, 0, &x, &y);
 156
 157       DBG("%s: (%d,%d) -> (%d, %d)/%d\n",
 158           __FUNCTION__, face, level, x, y, mt->region->pitch * mt->cpp);
 159
 160       intel_image->base.Data = intel_region_map(intel, mt->region, mode) +
 161          (x + y * mt->region->pitch) * mt->cpp;
 162    }
 163
 164    intel_image->base.RowStride = mt->region->pitch;
 165 }
 166
 167 static void
 168 intel_tex_unmap_image_for_swrast(struct intel_context *intel,
 169                                  struct intel_texture_image *intel_image)
 170 {
 171    if (intel_image && intel_image->mt) {
 172       intel_region_unmap(intel, intel_image->mt->region);
 173       intel_image->base.Data = NULL;
 174    }
 175 }
 176
 177 /**
 178  * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
 179  */
 180 void
 181 intel_tex_map_images(struct intel_context *intel,
 182                      struct intel_texture_object *intelObj,
 183                      GLbitfield mode)
 184 {
 185    GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
 186    int i, face;
 187
 188    DBG("%s\n", __FUNCTION__);
 189
 190    for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++) {
 191       for (face = 0; face < nr_faces; face++) {
 192          struct intel_texture_image *intel_image =
 193             intel_texture_image(intelObj->base.Image[face][i]);
 194
 195          intel_tex_map_image_for_swrast(intel, intel_image, mode);
 196       }
 197    }
 198 }
 199
 200 void
 201 intel_tex_unmap_images(struct intel_context *intel,
 202                        struct intel_texture_object *intelObj)
 203 {
 204    GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
 205    int i, face;
 206
 207    for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++) {
 208       for (face = 0; face < nr_faces; face++) {
 209          struct intel_texture_image *intel_image =
 210             intel_texture_image(intelObj->base.Image[face][i]);
 211
 212          intel_tex_unmap_image_for_swrast(intel, intel_image);
 213       }
 214    }
 215 }