/* Otherwise, store it in memory if (Border != 0) or (any dimension ==
* 1).
*
* Otherwise, if max_level >= level >= min_level, create tree with
* space for textures from min_level down to max_level.
*
* Otherwise, create tree with space for textures from (level
* 0)..(1x1). Consider pruning this tree at a validation if the
* saving is worth it.
*/
static void
guess_and_alloc_mipmap_tree(struct intel_context *intel,
struct intel_texture_object *intelObj,
struct intel_texture_image *intelImage)
{
GLuint firstLevel;
GLuint lastLevel;
GLuint width = intelImage->base.Width;
GLuint height = intelImage->base.Height;
GLuint depth = intelImage->base.Depth;
GLuint l2width, l2height, l2depth;
GLuint i, comp_byte = 0;
DBG("%s\n", __FUNCTION__);
if (intelImage->base.Border)
return;
if (intelImage->level > intelObj->base.BaseLevel &&
(intelImage->base.Width == 1 ||
(intelObj->base.Target != GL_TEXTURE_1D &&
intelImage->base.Height == 1) ||
(intelObj->base.Target == GL_TEXTURE_3D &&
intelImage->base.Depth == 1)))
return;
/* If this image disrespects BaseLevel, allocate from level zero.
* Usually BaseLevel == 0, so it's unlikely to happen.
*/
if (intelImage->level < intelObj->base.BaseLevel)
firstLevel = 0;
else
firstLevel = intelObj->base.BaseLevel;
/* Figure out image dimensions at start level.
*/
for (i = intelImage->level; i > firstLevel; i--) {
width <<= 1;
if (height != 1)
height <<= 1;
if (depth != 1)
depth <<= 1;
}
/* Guess a reasonable value for lastLevel. This is probably going
* to be wrong fairly often and might mean that we have to look at
* resizable buffers, or require that buffers implement lazy
* pagetable arrangements.
*/
if ((intelObj->base.MinFilter == GL_NEAREST ||
intelObj->base.MinFilter == GL_LINEAR) &&
intelImage->level == firstLevel) {
lastLevel = firstLevel;
}
else {
l2width = logbase2(width);
l2height = logbase2(height);
l2depth = logbase2(depth);
lastLevel = firstLevel + MAX2(MAX2(l2width, l2height), l2depth);
}
assert(!intelObj->mt);
if (intelImage->base.IsCompressed)
comp_byte = intel_compressed_num_bytes(intelImage->base.TexFormat->MesaFormat);
intelObj->mt = intel_miptree_create(intel,
intelObj->base.Target,
intelImage->base.InternalFormat,
firstLevel,
lastLevel,
width,
height,
depth,
intelImage->base.TexFormat->TexelBytes,
comp_byte);
DBG("%s - success\n", __FUNCTION__);
}
GLuint
intel_finalize_mipmap_tree(struct intel_context *intel, GLuint unit)
{
struct gl_texture_object *tObj = intel->ctx.Texture.Unit[unit]._Current;
struct intel_texture_object *intelObj = intel_texture_object(tObj);
int comp_byte = 0;
int cpp;
GLuint face, i;
GLuint nr_faces = 0;
struct intel_texture_image *firstImage;
/* We know/require this is true by now:
*/
assert(intelObj->base._Complete);
/* What levels must the tree include at a minimum?
*/
intel_calculate_first_last_level(intelObj);
firstImage =
intel_texture_image(intelObj->base.Image[0][intelObj->firstLevel]);
/* Fallback case:
*/
if (firstImage->base.Border) {
if (intelObj->mt) {
intel_miptree_release(intel, &intelObj->mt);
}
return GL_FALSE;
}
/* If both firstImage and intelObj have a tree which can contain
* all active images, favour firstImage. Note that because of the
* completeness requirement, we know that the image dimensions
* will match.
*/
if (firstImage->mt &&
firstImage->mt != intelObj->mt &&
firstImage->mt->first_level <= intelObj->firstLevel &&
firstImage->mt->last_level >= intelObj->lastLevel) {
if (intelObj->mt)
intel_miptree_release(intel, &intelObj->mt);
intel_miptree_reference(&intelObj->mt, firstImage->mt);
}
if (firstImage->base.IsCompressed) {
comp_byte = intel_compressed_num_bytes(firstImage->base.TexFormat->MesaFormat);
cpp = comp_byte;
}
else cpp = firstImage->base.TexFormat->TexelBytes;
/* Check tree can hold all active levels. Check tree matches
* target, imageFormat, etc.
*
* XXX: For some layouts (eg i945?), the test might have to be
* first_level == firstLevel, as the tree isn't valid except at the
* original start level. Hope to get around this by
* programming minLod, maxLod, baseLevel into the hardware and
* leaving the tree alone.
*/
if (intelObj->mt &&
(intelObj->mt->target != intelObj->base.Target ||
intelObj->mt->internal_format != firstImage->base.InternalFormat ||
intelObj->mt->first_level != intelObj->firstLevel ||
intelObj->mt->last_level != intelObj->lastLevel ||
intelObj->mt->width0 != firstImage->base.Width ||
intelObj->mt->height0 != firstImage->base.Height ||
intelObj->mt->depth0 != firstImage->base.Depth ||
intelObj->mt->cpp != cpp ||
intelObj->mt->compressed != firstImage->base.IsCompressed)) {
intel_miptree_release(intel, &intelObj->mt);
}
/* May need to create a new tree:
*/
if (!intelObj->mt) {
intelObj->mt = intel_miptree_create(intel,
intelObj->base.Target,
firstImage->base.InternalFormat,
intelObj->firstLevel,
intelObj->lastLevel,
firstImage->base.Width,
firstImage->base.Height,
firstImage->base.Depth,
cpp,
comp_byte,
GL_TRUE);
}
/* Pull in any images not in the object's tree:
*/
nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
for (face = 0; face < nr_faces; face++) {
for (i = intelObj->firstLevel; i <= intelObj->lastLevel; i++) {
struct intel_texture_image *intelImage =
intel_texture_image(intelObj->base.Image[face][i]);
/* Need to import images in main memory or held in other trees.
*/
if (intelObj->mt != intelImage->mt) {
copy_image_data_to_tree(intel, intelObj, intelImage);
}
}
}
return GL_TRUE;
}
GLuint intel_finalize_mipmap_tree( struct intel_context *intel,
struct gl_texture_object *tObj )
{
struct intel_texture_object *intelObj = intel_texture_object(tObj);
GLuint face, i;
GLuint nr_faces = 0;
struct gl_texture_image *firstImage;
GLuint cpp = 0;
if( tObj == intel->frame_buffer_texobj )
return GL_FALSE;
/* We know/require this is true by now:
*/
assert(intelObj->base.Complete);
/* What levels must the tree include at a minimum?
*/
if (intelObj->dirty) {
intel_calculate_first_last_level( intelObj );
/* intel_miptree_destroy(intel, intelObj->mt); */
/* intelObj->mt = NULL; */
}
firstImage = intelObj->base.Image[0][intelObj->firstLevel];
/* Fallback case:
*/
if (firstImage->Border ||
((firstImage->_BaseFormat == GL_DEPTH_COMPONENT) &&
((tObj->WrapS == GL_CLAMP_TO_BORDER) ||
(tObj->WrapT == GL_CLAMP_TO_BORDER)))) {
if (intelObj->mt) {
intel_miptree_destroy(intel, intelObj->mt);
intelObj->mt = NULL;
/* Set all images dirty:
*/
intel_texture_invalidate(intelObj);
}
return GL_FALSE;
}
if (firstImage->IsCompressed) {
cpp = intel_compressed_num_bytes(firstImage->TexFormat->MesaFormat);
} else {
cpp = firstImage->TexFormat->TexelBytes;
}
/* Check tree can hold all active levels. Check tree matches
* target, imageFormat, etc.
*/
if (intelObj->mt &&
(intelObj->mt->target != intelObj->base.Target ||
intelObj->mt->internal_format != firstImage->InternalFormat ||
intelObj->mt->first_level != intelObj->firstLevel ||
intelObj->mt->last_level != intelObj->lastLevel ||
intelObj->mt->width0 != firstImage->Width ||
intelObj->mt->height0 != firstImage->Height ||
intelObj->mt->depth0 != firstImage->Depth ||
intelObj->mt->cpp != cpp ||
intelObj->mt->compressed != firstImage->IsCompressed))
{
intel_miptree_destroy(intel, intelObj->mt);
intelObj->mt = NULL;
/* Set all images dirty:
*/
intel_texture_invalidate(intelObj);
}
/* May need to create a new tree:
*/
if (!intelObj->mt) {
intelObj->mt = intel_miptree_create(intel,
intelObj->base.Target,
firstImage->InternalFormat,
intelObj->firstLevel,
intelObj->lastLevel,
firstImage->Width,
firstImage->Height,
firstImage->Depth,
cpp,
firstImage->IsCompressed);
/* Tell the buffer manager that we will manage the backing
* store, but we still want it to do fencing for us.
*/
bmBufferSetInvalidateCB(intel,
intelObj->mt->region->buffer,
intel_texture_invalidate_cb,
intelObj,
GL_FALSE);
}
/* Pull in any images not in the object's tree:
*/
if (intelObj->dirty) {
nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
for (face = 0; face < nr_faces; face++) {
if (intelObj->dirty_images[face]) {
for (i = intelObj->firstLevel; i <= intelObj->lastLevel; i++) {
struct gl_texture_image *texImage = intelObj->base.Image[face][i];
/* Need to import images in main memory or held in other trees.
*/
if (intelObj->dirty_images[face] & (1<<i) &&
texImage) {
if (INTEL_DEBUG & DEBUG_TEXTURE)
_mesa_printf("copy data from image %d (%p) into object miptree\n",
i,
texImage->Data);
if (!copy_image_data_to_tree(intel,
intelObj,
texImage,
face,
i))
return GL_FALSE;
}
}
}
}
/* Only clear the dirty flags if everything went ok:
*/
for (face = 0; face < nr_faces; face++) {
intelObj->dirty_images[face] = 0;
}
intelObj->dirty = 0;
}
return GL_TRUE;
}
