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/*
* Copyright © 2013 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "main/mtypes.h"
#include "main/macros.h"
#include "main/samplerobj.h"
#include "main/teximage.h"
#include "main/texobj.h"
#include "brw_context.h"
#include "brw_mipmap_tree.h"
#include "brw_tex.h"
#define FILE_DEBUG_FLAG DEBUG_TEXTURE
/**
* Sets our driver-specific variant of tObj->_MaxLevel for later surface state
* upload.
*
* If we're only ensuring that there is storage for the first miplevel of a
* texture, then in texture setup we're going to have to make sure we don't
* allow sampling beyond level 0.
*/
static void
brw_update_max_level(struct gl_texture_object *tObj,
struct gl_sampler_object *sampler)
{
struct brw_texture_object *brw_obj = brw_texture_object(tObj);
if (!tObj->_MipmapComplete ||
(tObj->_RenderToTexture &&
(sampler->Attrib.MinFilter == GL_NEAREST ||
sampler->Attrib.MinFilter == GL_LINEAR))) {
brw_obj->_MaxLevel = tObj->Attrib.BaseLevel;
} else {
brw_obj->_MaxLevel = tObj->_MaxLevel;
}
}
/**
* At rendering-from-a-texture time, make sure that the texture object has a
* miptree that can hold the entire texture based on
* BaseLevel/MaxLevel/filtering, and copy in any texture images that are
* stored in other miptrees.
*/
void
brw_finalize_mipmap_tree(struct brw_context *brw,
struct gl_texture_object *tObj)
{
struct brw_texture_object *brw_obj = brw_texture_object(tObj);
GLuint face, i;
GLuint nr_faces = 0;
struct brw_texture_image *firstImage;
int width, height, depth;
/* TBOs require no validation -- they always just point to their BO. */
if (tObj->Target == GL_TEXTURE_BUFFER)
return;
/* What levels does this validated texture image require? */
int validate_first_level = tObj->Attrib.BaseLevel;
int validate_last_level = brw_obj->_MaxLevel;
/* Skip the loop over images in the common case of no images having
* changed. But if the GL_BASE_LEVEL or GL_MAX_LEVEL change to something we
* haven't looked at, then we do need to look at those new images.
*/
if (!brw_obj->needs_validate &&
validate_first_level >= brw_obj->validated_first_level &&
validate_last_level <= brw_obj->validated_last_level) {
return;
}
/* On recent generations, immutable textures should not get this far
* -- they should have been created in a validated state, and nothing
* can invalidate them.
*
* Unfortunately, this is not true on pre-Sandybridge hardware -- when
* rendering into an immutable-format depth texture we may have to rebase
* the rendered levels to meet alignment requirements.
*
* FINISHME: Avoid doing this.
*/
assert(!tObj->Immutable || brw->screen->devinfo.ver < 6);
firstImage = brw_texture_image(tObj->Image[0][tObj->Attrib.BaseLevel]);
/* Check tree can hold all active levels. Check tree matches
* target, imageFormat, etc.
*/
if (brw_obj->mt &&
(!brw_miptree_match_image(brw_obj->mt, &firstImage->base.Base) ||
validate_first_level < brw_obj->mt->first_level ||
validate_last_level > brw_obj->mt->last_level)) {
brw_miptree_release(&brw_obj->mt);
}
/* May need to create a new tree:
*/
if (!brw_obj->mt) {
const unsigned level = firstImage->base.Base.Level;
brw_get_image_dims(&firstImage->base.Base, &width, &height, &depth);
/* Figure out image dimensions at start level. */
switch(brw_obj->base.Target) {
case GL_TEXTURE_2D_MULTISAMPLE:
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
case GL_TEXTURE_RECTANGLE:
case GL_TEXTURE_EXTERNAL_OES:
assert(level == 0);
break;
case GL_TEXTURE_3D:
depth = depth << level;
FALLTHROUGH;
case GL_TEXTURE_2D:
case GL_TEXTURE_2D_ARRAY:
case GL_TEXTURE_CUBE_MAP:
case GL_TEXTURE_CUBE_MAP_ARRAY:
height = height << level;
FALLTHROUGH;
case GL_TEXTURE_1D:
case GL_TEXTURE_1D_ARRAY:
width = width << level;
break;
default:
unreachable("Unexpected target");
}
perf_debug("Creating new %s %dx%dx%d %d-level miptree to handle "
"finalized texture miptree.\n",
_mesa_get_format_name(firstImage->base.Base.TexFormat),
width, height, depth, validate_last_level + 1);
brw_obj->mt = brw_miptree_create(brw,
brw_obj->base.Target,
firstImage->base.Base.TexFormat,
0, /* first_level */
validate_last_level,
width,
height,
depth,
1 /* num_samples */,
MIPTREE_CREATE_BUSY);
if (!brw_obj->mt)
return;
}
/* Pull in any images not in the object's tree:
*/
nr_faces = _mesa_num_tex_faces(brw_obj->base.Target);
for (face = 0; face < nr_faces; face++) {
for (i = validate_first_level; i <= validate_last_level; i++) {
struct brw_texture_image *brw_image =
brw_texture_image(brw_obj->base.Image[face][i]);
/* skip too small size mipmap */
if (brw_image == NULL)
break;
if (brw_obj->mt != brw_image->mt)
brw_miptree_copy_teximage(brw, brw_image, brw_obj->mt);
/* After we're done, we'd better agree that our layout is
* appropriate, or we'll end up hitting this function again on the
* next draw
*/
assert(brw_miptree_match_image(brw_obj->mt, &brw_image->base.Base));
}
}
brw_obj->validated_first_level = validate_first_level;
brw_obj->validated_last_level = validate_last_level;
brw_obj->_Format = firstImage->base.Base.TexFormat,
brw_obj->needs_validate = false;
}
/**
* Finalizes all textures, completing any rendering that needs to be done
* to prepare them.
*/
void
brw_validate_textures(struct brw_context *brw)
{
struct gl_context *ctx = &brw->ctx;
const int max_enabled_unit = ctx->Texture._MaxEnabledTexImageUnit;
for (int unit = 0; unit <= max_enabled_unit; unit++) {
struct gl_texture_object *tex_obj = ctx->Texture.Unit[unit]._Current;
if (!tex_obj)
continue;
struct gl_sampler_object *sampler = _mesa_get_samplerobj(ctx, unit);
/* We know that this is true by now, and if it wasn't, we might have
* mismatched level sizes and the copies would fail.
*/
assert(tex_obj->_BaseComplete);
brw_update_max_level(tex_obj, sampler);
brw_finalize_mipmap_tree(brw, tex_obj);
}
}
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