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    intel_miptree_get_dimensions_for_image(&firstImage->base.Base,
  56                                           &width, &height, &depth);
  57
  58    /* Check tree can hold all active levels.  Check tree matches
  59     * target, imageFormat, etc.
  60     *
  61     * For pre-gen4, we have to match first_level == tObj->BaseLevel,
  62     * because we don't have the control that gen4 does to make min/mag
  63     * determination happen at a nonzero (hardware) baselevel.  Because
  64     * of that, we just always relayout on baselevel change.
  65     */
  66    if (intelObj->mt &&
  67        (intelObj->mt->target != intelObj->base.Target ||
  68         intelObj->mt->format != firstImage->base.Base.TexFormat ||
  69         intelObj->mt->first_level != tObj->BaseLevel ||
  70         intelObj->mt->last_level < intelObj->_MaxLevel ||
  71         intelObj->mt->width0 != width ||
  72         intelObj->mt->height0 != height ||
  73         intelObj->mt->depth0 != depth)) {
  74       intel_miptree_release(&intelObj->mt);
  75    }
  76
  77
  78    /* May need to create a new tree:
  79     */
  80    if (!intelObj->mt) {
  81       intelObj->mt = intel_miptree_create(intel,
  82                                           intelObj->base.Target,
  83                                           firstImage->base.Base.TexFormat,
  84                                           tObj->BaseLevel,
  85                                           intelObj->_MaxLevel,
  86                                           width,
  87                                           height,
  88                                           depth,
  89                                           true);
  90       if (!intelObj->mt)
  91          return false;
  92    }
  93
  94    /* Pull in any images not in the object's tree:
  95     */
  96    nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
  97    for (face = 0; face < nr_faces; face++) {
  98       for (i = tObj->BaseLevel; i <= intelObj->_MaxLevel; i++) {
  99          struct intel_texture_image *intelImage =
 100             intel_texture_image(intelObj->base.Image[face][i]);
 101          /* skip too small size mipmap */
 102          if (intelImage == NULL)
 103                  break;
 104          /* Need to import images in main memory or held in other trees.
 105           * If it's a render target, then its data isn't needed to be in
 106           * the object tree (otherwise we'd be FBO incomplete), and we need
 107           * to keep track of the image's MT as needing to be pulled in still,
 108           * or we'll lose the rendering that's done to it.
 109           */
 110          if (intelObj->mt != intelImage->mt &&
 111              !intelImage->used_as_render_target) {
 112             intel_miptree_copy_teximage(intel, intelImage, intelObj->mt);
 113          }
 114       }
 115    }
 116
 117    return true;
 118 }
 119
 120 /**
 121  * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
 122  */
 123 static void
 124 intel_tex_map_image_for_swrast(struct intel_context *intel,
 125                                struct intel_texture_image *intel_image,
 126                                GLbitfield mode)
 127 {
 128    int level = intel_image->base.Base.Level;
 129    int face = intel_image->base.Base.Face;
 130    struct intel_mipmap_tree *mt;
 131    unsigned int x, y;
 132
 133    if (!intel_image || !intel_image->mt)
 134       return;
 135
 136    mt = intel_image->mt;
 137
 138    if (mt->target == GL_TEXTURE_3D ||
 139        mt->target == GL_TEXTURE_2D_ARRAY ||
 140        mt->target == GL_TEXTURE_1D_ARRAY) {
 141       int i;
 142
 143       /* ImageOffsets[] is only used for swrast's fetch_texel_3d, so we can't
 144        * share code with the normal path.
 145        */
 146       for (i = 0; i < mt->level[level].depth; i++) {
 147          intel_miptree_get_image_offset(mt, level, face, i, &x, &y);
 148          intel_image->base.ImageOffsets[i] = x + y * mt->region->pitch;
 149       }
 150
 151       DBG("%s \n", __FUNCTION__);
 152
 153       intel_image->base.Data = intel_region_map(intel, mt->region, mode);
 154    } else {
 155       assert(mt->level[level].depth == 1);
 156       intel_miptree_get_image_offset(mt, level, face, 0, &x, &y);
 157
 158       DBG("%s: (%d,%d) -> (%d, %d)/%d\n",
 159           __FUNCTION__, face, level, x, y, mt->region->pitch * mt->cpp);
 160
 161       intel_image->base.Data = intel_region_map(intel, mt->region, mode) +
 162          (x + y * mt->region->pitch) * mt->cpp;
 163    }
 164
 165    intel_image->base.RowStride = mt->region->pitch;
 166 }
 167
 168 static void
 169 intel_tex_unmap_image_for_swrast(struct intel_context *intel,
 170                                  struct intel_texture_image *intel_image)
 171 {
 172    if (intel_image && intel_image->mt) {
 173       intel_region_unmap(intel, intel_image->mt->region);
 174       intel_image->base.Data = NULL;
 175    }
 176 }
 177
 178 /**
 179  * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
 180  */
 181 void
 182 intel_tex_map_images(struct intel_context *intel,
 183                      struct intel_texture_object *intelObj,
 184                      GLbitfield mode)
 185 {
 186    GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
 187    int i, face;
 188
 189    DBG("%s\n", __FUNCTION__);
 190
 191    for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++) {
 192       for (face = 0; face < nr_faces; face++) {
 193          struct intel_texture_image *intel_image =
 194             intel_texture_image(intelObj->base.Image[face][i]);
 195
 196          intel_tex_map_image_for_swrast(intel, intel_image, mode);
 197       }
 198    }
 199 }
 200
 201 void
 202 intel_tex_unmap_images(struct intel_context *intel,
 203                        struct intel_texture_object *intelObj)
 204 {
 205    GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
 206    int i, face;
 207
 208    for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++) {
 209       for (face = 0; face < nr_faces; face++) {
 210          struct intel_texture_image *intel_image =
 211             intel_texture_image(intelObj->base.Image[face][i]);
 212
 213          intel_tex_unmap_image_for_swrast(intel, intel_image);
 214       }
 215    }
 216 }