static void
brw_miptree_layout_texture_array(struct brw_context *brw,
struct intel_mipmap_tree *mt)
{
unsigned height = mt->physical_height0;
bool layout_1d = gen9_use_linear_1d_layout(brw, mt);
int physical_qpitch;
if (layout_1d)
gen9_miptree_layout_1d(mt);
else
brw_miptree_layout_2d(mt);
if (layout_1d) {
physical_qpitch = 1;
/* When using the horizontal layout the qpitch specifies the distance in
* pixels between array slices. The total_width is forced to be a
* multiple of the horizontal alignment in brw_miptree_layout_1d (in
* this case it's always 64). The vertical alignment is ignored.
*/
mt->qpitch = mt->total_width;
} else {
mt->qpitch = brw_miptree_get_vertical_slice_pitch(brw, mt, 0);
/* Unlike previous generations the qpitch is a multiple of the
* compressed block size on Gen9 so physical_qpitch matches mt->qpitch.
*/
physical_qpitch = (mt->compressed && brw->gen < 9 ? mt->qpitch / 4 :
mt->qpitch);
}
for (unsigned level = mt->first_level; level <= mt->last_level; level++) {
unsigned img_height;
img_height = ALIGN_NPOT(height, mt->align_h);
if (mt->compressed)
img_height /= mt->align_h;
for (unsigned q = 0; q < mt->level[level].depth; q++) {
if (mt->array_layout == ALL_SLICES_AT_EACH_LOD) {
intel_miptree_set_image_offset(mt, level, q, 0, q * img_height);
} else {
intel_miptree_set_image_offset(mt, level, q, 0, q * physical_qpitch);
}
}
height = minify(height, 1);
}
if (mt->array_layout == ALL_LOD_IN_EACH_SLICE)
mt->total_height = physical_qpitch * mt->physical_depth0;
align_cube(mt);
}
static void
brw_miptree_layout_texture_array(struct brw_context *brw,
struct intel_mipmap_tree *mt)
{
unsigned qpitch = 0;
int h0, h1;
h0 = ALIGN(mt->physical_height0, mt->align_h);
h1 = ALIGN(minify(mt->physical_height0, 1), mt->align_h);
if (mt->array_spacing_lod0)
qpitch = h0;
else
qpitch = (h0 + h1 + (brw->gen >= 7 ? 12 : 11) * mt->align_h);
if (mt->compressed)
qpitch /= 4;
brw_miptree_layout_2d(mt);
for (unsigned level = mt->first_level; level <= mt->last_level; level++) {
for (int q = 0; q < mt->physical_depth0; q++) {
intel_miptree_set_image_offset(mt, level, q, 0, q * qpitch);
}
}
mt->total_height = qpitch * mt->physical_depth0;
align_cube(mt);
}
static void
brw_miptree_layout_texture_array(struct intel_context *intel,
struct intel_mipmap_tree *mt)
{
GLuint level;
GLuint qpitch = 0;
int h0, h1, q;
h0 = ALIGN(mt->height0, mt->align_h);
h1 = ALIGN(minify(mt->height0), mt->align_h);
if (mt->array_spacing_lod0)
qpitch = h0;
else
qpitch = (h0 + h1 + (intel->gen >= 7 ? 12 : 11) * mt->align_h);
if (mt->compressed)
qpitch /= 4;
i945_miptree_layout_2d(mt);
for (level = mt->first_level; level <= mt->last_level; level++) {
for (q = 0; q < mt->depth0; q++) {
intel_miptree_set_image_offset(mt, level, q, 0, q * qpitch);
}
}
mt->total_height = qpitch * mt->depth0;
}
static void
brw_miptree_layout_texture_array(struct brw_context *brw,
struct intel_mipmap_tree *mt)
{
int h0, h1;
unsigned height = mt->physical_height0;
bool layout_1d = use_linear_1d_layout(brw, mt);
h0 = ALIGN(mt->physical_height0, mt->align_h);
h1 = ALIGN(minify(mt->physical_height0, 1), mt->align_h);
if (mt->array_layout == ALL_SLICES_AT_EACH_LOD)
mt->qpitch = h0;
else
mt->qpitch = (h0 + h1 + (brw->gen >= 7 ? 12 : 11) * mt->align_h);
int physical_qpitch = mt->compressed ? mt->qpitch / 4 : mt->qpitch;
if (layout_1d)
gen9_miptree_layout_1d(mt);
else
brw_miptree_layout_2d(mt);
for (unsigned level = mt->first_level; level <= mt->last_level; level++) {
unsigned img_height;
img_height = ALIGN(height, mt->align_h);
if (mt->compressed)
img_height /= mt->align_h;
for (int q = 0; q < mt->level[level].depth; q++) {
if (mt->array_layout == ALL_SLICES_AT_EACH_LOD) {
intel_miptree_set_image_offset(mt, level, q, 0, q * img_height);
} else {
intel_miptree_set_image_offset(mt, level, q, 0, q * physical_qpitch);
}
}
height = minify(height, 1);
}
if (mt->array_layout == ALL_LOD_IN_EACH_SLICE)
mt->total_height = physical_qpitch * mt->physical_depth0;
align_cube(mt);
}
static void
i945_miptree_layout_3d(struct intel_context *intel,
struct intel_mipmap_tree * mt,
uint32_t tiling)
{
GLuint width = mt->width0;
GLuint height = mt->height0;
GLuint depth = mt->depth0;
GLuint pack_x_pitch, pack_x_nr;
GLuint pack_y_pitch;
GLuint level;
mt->pitch = intel_miptree_pitch_align (intel, mt, tiling, mt->width0);
mt->total_height = 0;
pack_y_pitch = MAX2(mt->height0, 2);
pack_x_pitch = mt->pitch;
pack_x_nr = 1;
for (level = mt->first_level; level <= mt->last_level; level++) {
GLint x = 0;
GLint y = 0;
GLint q, j;
intel_miptree_set_level_info(mt, level, depth,
0, mt->total_height,
width, height, depth);
for (q = 0; q < depth;) {
for (j = 0; j < pack_x_nr && q < depth; j++, q++) {
intel_miptree_set_image_offset(mt, level, q, x, y);
x += pack_x_pitch;
}
x = 0;
y += pack_y_pitch;
}
mt->total_height += y;
if (pack_x_pitch > 4) {
pack_x_pitch >>= 1;
pack_x_nr <<= 1;
assert(pack_x_pitch * pack_x_nr <= mt->pitch);
}
if (pack_y_pitch > 2) {
pack_y_pitch >>= 1;
}
static void
i915_miptree_layout_3d(struct intel_context *intel,
struct intel_mipmap_tree * mt,
uint32_t tiling)
{
GLuint width = mt->width0;
GLuint height = mt->height0;
GLuint depth = mt->depth0;
GLuint stack_height = 0;
GLint level;
/* Calculate the size of a single slice. */
mt->pitch = intel_miptree_pitch_align (intel, mt, tiling, mt->width0);
/* XXX: hardware expects/requires 9 levels at minimum. */
for (level = mt->first_level; level <= MAX2(8, mt->last_level); level++) {
intel_miptree_set_level_info(mt, level, depth, 0, mt->total_height,
width, height, depth);
stack_height += MAX2(2, height);
width = minify(width);
height = minify(height);
depth = minify(depth);
}
/* Fixup depth image_offsets: */
depth = mt->depth0;
for (level = mt->first_level; level <= mt->last_level; level++) {
GLuint i;
for (i = 0; i < depth; i++) {
intel_miptree_set_image_offset(mt, level, i,
0, i * stack_height);
}
depth = minify(depth);
}
/* Multiply slice size by texture depth for total size. It's
* remarkable how wasteful of memory the i915 texture layouts
* are. They are largely fixed in the i945.
*/
mt->total_height = stack_height * mt->depth0;
}
/**
* Cube texture map layout for i830M-GM915.
*
* Hardware layout looks like:
*
* +-------+-------+
* | | |
* | | |
* | | |
* | +x | +y |
* | | |
* | | |
* | | |
* | | |
* +---+---+-------+
* | | | |
* | +x| +y| |
* | | | |
* | | | |
* +-+-+---+ +z |
* | | | | |
* +-+-+ +z| |
* | | | |
* +-+-+---+-------+
* | | |
* | | |
* | | |
* | -x | -y |
* | | |
* | | |
* | | |
* | | |
* +---+---+-------+
* | | | |
* | -x| -y| |
* | | | |
* | | | |
* +-+-+---+ -z |
* | | | | |
* +-+-+ -z| |
* | | | |
* +-+---+-------+
*
*/
static void
i915_miptree_layout_cube(struct intel_context *intel,
struct intel_mipmap_tree * mt,
uint32_t tiling)
{
const GLuint dim = mt->width0;
GLuint face;
GLuint lvlWidth = mt->width0, lvlHeight = mt->height0;
GLint level;
assert(lvlWidth == lvlHeight); /* cubemap images are square */
/* double pitch for cube layouts */
mt->pitch = intel_miptree_pitch_align (intel, mt, tiling, dim * 2);
mt->total_height = dim * 4;
for (level = mt->first_level; level <= mt->last_level; level++) {
intel_miptree_set_level_info(mt, level, 6,
0, 0,
/*OLD: mt->pitch, mt->total_height,*/
lvlWidth, lvlHeight,
1);
lvlWidth /= 2;
lvlHeight /= 2;
}
for (face = 0; face < 6; face++) {
GLuint x = initial_offsets[face][0] * dim;
GLuint y = initial_offsets[face][1] * dim;
GLuint d = dim;
for (level = mt->first_level; level <= mt->last_level; level++) {
intel_miptree_set_image_offset(mt, level, face, x, y);
if (d == 0)
printf("cube mipmap %d/%d (%d..%d) is 0x0\n",
face, level, mt->first_level, mt->last_level);
d >>= 1;
x += step_offsets[face][0] * d;
y += step_offsets[face][1] * d;
}
}
}
static void
brw_miptree_layout_texture_3d(struct brw_context *brw,
struct intel_mipmap_tree *mt)
{
mt->total_width = 0;
mt->total_height = 0;
unsigned ysum = 0;
unsigned bh, bw;
_mesa_get_format_block_size(mt->format, &bw, &bh);
for (unsigned level = mt->first_level; level <= mt->last_level; level++) {
unsigned WL = MAX2(mt->physical_width0 >> level, 1);
unsigned HL = MAX2(mt->physical_height0 >> level, 1);
unsigned DL = MAX2(mt->physical_depth0 >> level, 1);
unsigned wL = ALIGN_NPOT(WL, mt->align_w);
unsigned hL = ALIGN_NPOT(HL, mt->align_h);
if (mt->target == GL_TEXTURE_CUBE_MAP)
DL = 6;
intel_miptree_set_level_info(mt, level, 0, 0, DL);
for (unsigned q = 0; q < DL; q++) {
unsigned x = (q % (1 << level)) * wL;
unsigned y = ysum + (q >> level) * hL;
intel_miptree_set_image_offset(mt, level, q, x / bw, y / bh);
mt->total_width = MAX2(mt->total_width, (x + wL) / bw);
mt->total_height = MAX2(mt->total_height, (y + hL) / bh);
}
ysum += ALIGN(DL, 1 << level) / (1 << level) * hL;
}
align_cube(mt);
}
static void
brw_miptree_layout_texture_3d(struct brw_context *brw,
struct intel_mipmap_tree *mt)
{
unsigned yscale = mt->compressed ? 4 : 1;
mt->total_width = 0;
mt->total_height = 0;
unsigned ysum = 0;
for (unsigned level = mt->first_level; level <= mt->last_level; level++) {
unsigned WL = MAX2(mt->physical_width0 >> level, 1);
unsigned HL = MAX2(mt->physical_height0 >> level, 1);
unsigned DL = MAX2(mt->physical_depth0 >> level, 1);
unsigned wL = ALIGN(WL, mt->align_w);
unsigned hL = ALIGN(HL, mt->align_h);
if (mt->target == GL_TEXTURE_CUBE_MAP)
DL = 6;
intel_miptree_set_level_info(mt, level, 0, 0, WL, HL, DL);
for (unsigned q = 0; q < DL; q++) {
unsigned x = (q % (1 << level)) * wL;
unsigned y = ysum + (q >> level) * hL;
intel_miptree_set_image_offset(mt, level, q, x, y / yscale);
mt->total_width = MAX2(mt->total_width, x + wL);
mt->total_height = MAX2(mt->total_height, (y + hL) / yscale);
}
ysum += ALIGN(DL, 1 << level) / (1 << level) * hL;
}
align_cube(mt);
}
static void
i945_miptree_layout_cube(struct intel_mipmap_tree * mt)
{
const GLuint dim = mt->width0;
GLuint face;
GLuint lvlWidth = mt->width0, lvlHeight = mt->height0;
GLint level;
assert(lvlWidth == lvlHeight); /* cubemap images are square */
/* Depending on the size of the largest images, pitch can be
* determined either by the old-style packing of cubemap faces,
* or the final row of 4x4, 2x2 and 1x1 faces below this.
*/
if (dim > 32)
mt->total_width = dim * 2;
else
mt->total_width = 14 * 8;
if (dim >= 4)
mt->total_height = dim * 4 + 4;
else
mt->total_height = 4;
/* Set all the levels to effectively occupy the whole rectangular region. */
for (level = mt->first_level; level <= mt->last_level; level++) {
intel_miptree_set_level_info(mt, level,
0, 0,
lvlWidth, lvlHeight, 6);
lvlWidth /= 2;
lvlHeight /= 2;
}
for (face = 0; face < 6; face++) {
GLuint x = initial_offsets[face][0] * dim;
GLuint y = initial_offsets[face][1] * dim;
GLuint d = dim;
if (dim == 4 && face >= 4) {
y = mt->total_height - 4;
x = (face - 4) * 8;
} else if (dim < 4 && (face > 0 || mt->first_level > 0)) {
y = mt->total_height - 4;
x = face * 8;
}
for (level = mt->first_level; level <= mt->last_level; level++) {
intel_miptree_set_image_offset(mt, level, face, x, y);
d >>= 1;
switch (d) {
case 4:
switch (face) {
case FACE_POS_X:
case FACE_NEG_X:
x += step_offsets[face][0] * d;
y += step_offsets[face][1] * d;
break;
case FACE_POS_Y:
case FACE_NEG_Y:
y += 12;
x -= 8;
break;
case FACE_POS_Z:
case FACE_NEG_Z:
y = mt->total_height - 4;
x = (face - 4) * 8;
break;
}
break;
case 2:
y = mt->total_height - 4;
x = bottom_offsets[face];
break;
case 1:
x += 48;
break;
default:
x += step_offsets[face][0] * d;
y += step_offsets[face][1] * d;
break;
}
}
}
}
GLboolean
i915_miptree_layout(struct intel_context *intel, struct intel_mipmap_tree * mt)
{
GLint level;
switch (mt->target) {
case GL_TEXTURE_CUBE_MAP:{
const GLuint dim = mt->width0;
GLuint face;
GLuint lvlWidth = mt->width0, lvlHeight = mt->height0;
assert(lvlWidth == lvlHeight); /* cubemap images are square */
/* double pitch for cube layouts */
mt->pitch = intel_miptree_pitch_align (intel, mt, dim * 2);
mt->total_height = dim * 4;
for (level = mt->first_level; level <= mt->last_level; level++) {
intel_miptree_set_level_info(mt, level, 6,
0, 0,
/*OLD: mt->pitch, mt->total_height,*/
lvlWidth, lvlHeight,
1);
lvlWidth /= 2;
lvlHeight /= 2;
}
for (face = 0; face < 6; face++) {
GLuint x = initial_offsets[face][0] * dim;
GLuint y = initial_offsets[face][1] * dim;
GLuint d = dim;
for (level = mt->first_level; level <= mt->last_level; level++) {
intel_miptree_set_image_offset(mt, level, face, x, y);
if (d == 0)
_mesa_printf("cube mipmap %d/%d (%d..%d) is 0x0\n",
face, level, mt->first_level, mt->last_level);
d >>= 1;
x += step_offsets[face][0] * d;
y += step_offsets[face][1] * d;
}
}
break;
}
case GL_TEXTURE_3D:{
GLuint width = mt->width0;
GLuint height = mt->height0;
GLuint depth = mt->depth0;
GLuint stack_height = 0;
/* Calculate the size of a single slice.
*/
mt->pitch = intel_miptree_pitch_align (intel, mt, mt->width0);
/* XXX: hardware expects/requires 9 levels at minimum.
*/
for (level = mt->first_level; level <= MAX2(8, mt->last_level);
level++) {
intel_miptree_set_level_info(mt, level, depth, 0, mt->total_height,
width, height, depth);
stack_height += MAX2(2, height);
width = minify(width);
height = minify(height);
depth = minify(depth);
}
/* Fixup depth image_offsets:
*/
depth = mt->depth0;
for (level = mt->first_level; level <= mt->last_level; level++) {
GLuint i;
for (i = 0; i < depth; i++)
intel_miptree_set_image_offset(mt, level, i,
0, i * stack_height);
depth = minify(depth);
}
/* Multiply slice size by texture depth for total size. It's
* remarkable how wasteful of memory the i915 texture layouts
* are. They are largely fixed in the i945.
*/
mt->total_height = stack_height * mt->depth0;
break;
}
default:{
GLuint width = mt->width0;
GLuint height = mt->height0;
GLuint img_height;
mt->pitch = intel_miptree_pitch_align (intel, mt, mt->width0);
mt->total_height = 0;
for (level = mt->first_level; level <= mt->last_level; level++) {
intel_miptree_set_level_info(mt, level, 1,
0, mt->total_height,
width, height, 1);
if (mt->compressed)
img_height = MAX2(1, height / 4);
else
img_height = (MAX2(2, height) + 1) & ~1;
mt->total_height += img_height;
width = minify(width);
height = minify(height);
}
break;
}
}
DBG("%s: %dx%dx%d - sz 0x%x\n", __FUNCTION__,
mt->pitch,
mt->total_height, mt->cpp, mt->pitch * mt->total_height * mt->cpp);
return GL_TRUE;
}
GLboolean
i945_miptree_layout(struct intel_context *intel, struct intel_mipmap_tree * mt)
{
GLint level;
switch (mt->target) {
case GL_TEXTURE_CUBE_MAP:{
const GLuint dim = mt->width0;
GLuint face;
GLuint lvlWidth = mt->width0, lvlHeight = mt->height0;
assert(lvlWidth == lvlHeight); /* cubemap images are square */
/* Depending on the size of the largest images, pitch can be
* determined either by the old-style packing of cubemap faces,
* or the final row of 4x4, 2x2 and 1x1 faces below this.
*/
if (dim > 32)
mt->pitch = intel_miptree_pitch_align (intel, mt, dim);
else
mt->pitch = 14 * 8;
mt->total_height = dim * 4 + 4;
/* Set all the levels to effectively occupy the whole rectangular region.
*/
for (level = mt->first_level; level <= mt->last_level; level++) {
intel_miptree_set_level_info(mt, level, 6,
0, 0,
lvlWidth, lvlHeight, 1);
lvlWidth /= 2;
lvlHeight /= 2;
}
for (face = 0; face < 6; face++) {
GLuint x = initial_offsets[face][0] * dim;
GLuint y = initial_offsets[face][1] * dim;
GLuint d = dim;
if (dim == 4 && face >= 4) {
y = mt->total_height - 4;
x = (face - 4) * 8;
}
else if (dim < 4 && (face > 0 || mt->first_level > 0)) {
y = mt->total_height - 4;
x = face * 8;
}
for (level = mt->first_level; level <= mt->last_level; level++) {
intel_miptree_set_image_offset(mt, level, face, x, y);
d >>= 1;
switch (d) {
case 4:
switch (face) {
case FACE_POS_X:
case FACE_NEG_X:
x += step_offsets[face][0] * d;
y += step_offsets[face][1] * d;
break;
case FACE_POS_Y:
case FACE_NEG_Y:
y += 12;
x -= 8;
break;
case FACE_POS_Z:
case FACE_NEG_Z:
y = mt->total_height - 4;
x = (face - 4) * 8;
break;
}
case 2:
y = mt->total_height - 4;
x = 16 + face * 8;
break;
case 1:
x += 48;
break;
default:
x += step_offsets[face][0] * d;
y += step_offsets[face][1] * d;
break;
}
}
}
break;
}
case GL_TEXTURE_3D:{
GLuint width = mt->width0;
GLuint height = mt->height0;
GLuint depth = mt->depth0;
GLuint pack_x_pitch, pack_x_nr;
GLuint pack_y_pitch;
GLuint level;
mt->pitch = intel_miptree_pitch_align (intel, mt, mt->width0);
mt->total_height = 0;
pack_y_pitch = MAX2(mt->height0, 2);
pack_x_pitch = mt->pitch;
pack_x_nr = 1;
for (level = mt->first_level; level <= mt->last_level; level++) {
GLuint nr_images = mt->target == GL_TEXTURE_3D ? depth : 6;
GLint x = 0;
GLint y = 0;
GLint q, j;
intel_miptree_set_level_info(mt, level, nr_images,
0, mt->total_height,
width, height, depth);
for (q = 0; q < nr_images;) {
for (j = 0; j < pack_x_nr && q < nr_images; j++, q++) {
intel_miptree_set_image_offset(mt, level, q, x, y);
x += pack_x_pitch;
}
x = 0;
y += pack_y_pitch;
}
mt->total_height += y;
if (pack_x_pitch > 4) {
pack_x_pitch >>= 1;
pack_x_nr <<= 1;
assert(pack_x_pitch * pack_x_nr <= mt->pitch);
}
if (pack_y_pitch > 2) {
pack_y_pitch >>= 1;
}
width = minify(width);
height = minify(height);
depth = minify(depth);
}
break;
}
void
brw_miptree_layout(struct intel_context *intel, struct intel_mipmap_tree *mt)
{
switch (mt->target) {
case GL_TEXTURE_CUBE_MAP_ARRAY:
brw_miptree_layout_texture_array(intel, mt);
break;
case GL_TEXTURE_CUBE_MAP:
if (intel->gen >= 5) {
/* On Ironlake, cube maps are finally represented as just a series of
* MIPLAYOUT_BELOW 2D textures (like 2D texture arrays), separated by a
* pitch of qpitch rows, where qpitch is defined by the equation given
* in Volume 1 of the BSpec.
*/
brw_miptree_layout_texture_array(intel, mt);
break;
}
assert(mt->physical_depth0 == 6);
/* FALLTHROUGH */
case GL_TEXTURE_3D: {
GLuint width = mt->physical_width0;
GLuint height = mt->physical_height0;
GLuint depth = mt->physical_depth0;
GLuint pack_x_pitch, pack_x_nr;
GLuint pack_y_pitch;
GLuint level;
mt->total_height = 0;
if (mt->compressed) {
mt->total_width = ALIGN(width, mt->align_w);
pack_y_pitch = (height + 3) / 4;
} else {
mt->total_width = mt->physical_width0;
pack_y_pitch = ALIGN(mt->physical_height0, mt->align_h);
}
pack_x_pitch = width;
pack_x_nr = 1;
for (level = mt->first_level ; level <= mt->last_level ; level++) {
GLint x = 0;
GLint y = 0;
GLint q, j;
intel_miptree_set_level_info(mt, level,
0, mt->total_height,
width, height, depth);
for (q = 0; q < depth; /* empty */) {
for (j = 0; j < pack_x_nr && q < depth; j++, q++) {
intel_miptree_set_image_offset(mt, level, q, x, y);
x += pack_x_pitch;
}
if (x > mt->total_width)
mt->total_width = x;
x = 0;
y += pack_y_pitch;
}
mt->total_height += y;
width = minify(width);
height = minify(height);
if (mt->target == GL_TEXTURE_3D)
depth = minify(depth);
if (mt->compressed) {
pack_y_pitch = (height + 3) / 4;
if (pack_x_pitch > ALIGN(width, mt->align_w)) {
pack_x_pitch = ALIGN(width, mt->align_w);
pack_x_nr <<= 1;
}
} else {
pack_x_nr <<= 1;
if (pack_x_pitch > 4) {
pack_x_pitch >>= 1;
}
if (pack_y_pitch > 2) {
pack_y_pitch >>= 1;
pack_y_pitch = ALIGN(pack_y_pitch, mt->align_h);
}
}
}
/* The 965's sampler lays cachelines out according to how accesses
* in the texture surfaces run, so they may be "vertical" through
* memory. As a result, the docs say in Surface Padding Requirements:
* Sampling Engine Surfaces that two extra rows of padding are required.
*/
if (mt->target == GL_TEXTURE_CUBE_MAP)
mt->total_height += 2;
break;
}
GLboolean brw_miptree_layout(struct intel_context *intel,
struct intel_mipmap_tree *mt,
uint32_t tiling)
{
/* XXX: these vary depending on image format: */
/* GLint align_w = 4; */
switch (mt->target) {
case GL_TEXTURE_CUBE_MAP:
if (intel->gen == 5) {
GLuint align_h = 2;
GLuint level;
GLuint qpitch = 0;
int h0, h1, q;
/* On Ironlake, cube maps are finally represented as just a series
* of MIPLAYOUT_BELOW 2D textures (like 2D texture arrays), separated
* by a pitch of qpitch rows, where qpitch is defined by the equation
* given in Volume 1 of the BSpec.
*/
h0 = ALIGN(mt->height0, align_h);
h1 = ALIGN(minify(h0), align_h);
qpitch = (h0 + h1 + 11 * align_h);
if (mt->compressed)
qpitch /= 4;
i945_miptree_layout_2d(intel, mt, tiling, 6);
for (level = mt->first_level; level <= mt->last_level; level++) {
for (q = 0; q < 6; q++) {
intel_miptree_set_image_offset(mt, level, q, 0, q * qpitch);
}
}
mt->total_height = qpitch * 6;
break;
}
case GL_TEXTURE_3D: {
GLuint width = mt->width0;
GLuint height = mt->height0;
GLuint depth = mt->depth0;
GLuint pack_x_pitch, pack_x_nr;
GLuint pack_y_pitch;
GLuint level;
GLuint align_h = 2;
GLuint align_w = 4;
mt->total_height = 0;
intel_get_texture_alignment_unit(mt->internal_format, &align_w, &align_h);
if (mt->compressed) {
mt->pitch = ALIGN(width, align_w);
pack_y_pitch = (height + 3) / 4;
} else {
mt->pitch = intel_miptree_pitch_align (intel, mt, tiling, mt->width0);
pack_y_pitch = ALIGN(mt->height0, align_h);
}
pack_x_pitch = width;
pack_x_nr = 1;
for (level = mt->first_level ; level <= mt->last_level ; level++) {
GLuint nr_images = mt->target == GL_TEXTURE_3D ? depth : 6;
GLint x = 0;
GLint y = 0;
GLint q, j;
intel_miptree_set_level_info(mt, level, nr_images,
0, mt->total_height,
width, height, depth);
for (q = 0; q < nr_images;) {
for (j = 0; j < pack_x_nr && q < nr_images; j++, q++) {
intel_miptree_set_image_offset(mt, level, q, x, y);
x += pack_x_pitch;
}
x = 0;
y += pack_y_pitch;
}
mt->total_height += y;
width = minify(width);
height = minify(height);
depth = minify(depth);
if (mt->compressed) {
pack_y_pitch = (height + 3) / 4;
if (pack_x_pitch > ALIGN(width, align_w)) {
pack_x_pitch = ALIGN(width, align_w);
pack_x_nr <<= 1;
}
} else {
if (pack_x_pitch > 4) {
pack_x_pitch >>= 1;
pack_x_nr <<= 1;
assert(pack_x_pitch * pack_x_nr <= mt->pitch);
}
if (pack_y_pitch > 2) {
pack_y_pitch >>= 1;
pack_y_pitch = ALIGN(pack_y_pitch, align_h);
}
}
}
/* The 965's sampler lays cachelines out according to how accesses
* in the texture surfaces run, so they may be "vertical" through
* memory. As a result, the docs say in Surface Padding Requirements:
* Sampling Engine Surfaces that two extra rows of padding are required.
* We don't know of similar requirements for pre-965, but given that
* those docs are silent on padding requirements in general, let's play
* it safe.
*/
if (mt->target == GL_TEXTURE_CUBE_MAP)
mt->total_height += 2;
break;
}
GLboolean brw_miptree_layout(struct intel_context *intel,
struct intel_mipmap_tree *mt,
uint32_t tiling)
{
/* XXX: these vary depending on image format: */
/* GLint align_w = 4; */
switch (mt->target) {
case GL_TEXTURE_CUBE_MAP:
if (IS_IGDNG(intel->intelScreen->deviceID)) {
GLuint align_h = 2, align_w = 4;
GLuint level;
GLuint x = 0;
GLuint y = 0;
GLuint width = mt->width0;
GLuint height = mt->height0;
GLuint qpitch = 0;
GLuint y_pitch = 0;
mt->pitch = mt->width0;
intel_get_texture_alignment_unit(mt->internal_format, &align_w, &align_h);
y_pitch = ALIGN(height, align_h);
if (mt->compressed) {
mt->pitch = ALIGN(mt->width0, align_w);
}
if (mt->first_level != mt->last_level) {
GLuint mip1_width;
if (mt->compressed) {
mip1_width = ALIGN(minify(mt->width0), align_w)
+ ALIGN(minify(minify(mt->width0)), align_w);
} else {
mip1_width = ALIGN(minify(mt->width0), align_w)
+ minify(minify(mt->width0));
}
if (mip1_width > mt->pitch) {
mt->pitch = mip1_width;
}
}
mt->pitch = intel_miptree_pitch_align(intel, mt, tiling, mt->pitch);
if (mt->compressed) {
qpitch = (y_pitch + ALIGN(minify(y_pitch), align_h) + 11 * align_h) / 4;
mt->total_height = (y_pitch + ALIGN(minify(y_pitch), align_h) + 11 * align_h) / 4 * 6;
} else {
qpitch = (y_pitch + ALIGN(minify(y_pitch), align_h) + 11 * align_h);
mt->total_height = (y_pitch + ALIGN(minify(y_pitch), align_h) + 11 * align_h) * 6;
}
for (level = mt->first_level; level <= mt->last_level; level++) {
GLuint img_height;
GLuint nr_images = 6;
GLuint q = 0;
intel_miptree_set_level_info(mt, level, nr_images, x, y, width,
height, 1);
for (q = 0; q < nr_images; q++)
intel_miptree_set_image_offset(mt, level, q,
x, y + q * qpitch);
if (mt->compressed)
img_height = MAX2(1, height/4);
else
img_height = ALIGN(height, align_h);
if (level == mt->first_level + 1) {
x += ALIGN(width, align_w);
}
else {
y += img_height;
}
width = minify(width);
height = minify(height);
}
break;
}
case GL_TEXTURE_3D: {
GLuint width = mt->width0;
GLuint height = mt->height0;
GLuint depth = mt->depth0;
GLuint pack_x_pitch, pack_x_nr;
GLuint pack_y_pitch;
GLuint level;
GLuint align_h = 2;
GLuint align_w = 4;
mt->total_height = 0;
intel_get_texture_alignment_unit(mt->internal_format, &align_w, &align_h);
if (mt->compressed) {
mt->pitch = ALIGN(width, align_w);
pack_y_pitch = (height + 3) / 4;
} else {
mt->pitch = intel_miptree_pitch_align (intel, mt, tiling, mt->width0);
pack_y_pitch = ALIGN(mt->height0, align_h);
}
pack_x_pitch = width;
pack_x_nr = 1;
for (level = mt->first_level ; level <= mt->last_level ; level++) {
GLuint nr_images = mt->target == GL_TEXTURE_3D ? depth : 6;
GLint x = 0;
GLint y = 0;
GLint q, j;
intel_miptree_set_level_info(mt, level, nr_images,
0, mt->total_height,
width, height, depth);
for (q = 0; q < nr_images;) {
for (j = 0; j < pack_x_nr && q < nr_images; j++, q++) {
intel_miptree_set_image_offset(mt, level, q, x, y);
x += pack_x_pitch;
}
x = 0;
y += pack_y_pitch;
}
mt->total_height += y;
width = minify(width);
height = minify(height);
depth = minify(depth);
if (mt->compressed) {
pack_y_pitch = (height + 3) / 4;
if (pack_x_pitch > ALIGN(width, align_w)) {
pack_x_pitch = ALIGN(width, align_w);
pack_x_nr <<= 1;
}
} else {
if (pack_x_pitch > 4) {
pack_x_pitch >>= 1;
pack_x_nr <<= 1;
assert(pack_x_pitch * pack_x_nr <= mt->pitch);
}
if (pack_y_pitch > 2) {
pack_y_pitch >>= 1;
pack_y_pitch = ALIGN(pack_y_pitch, align_h);
}
}
}
/* The 965's sampler lays cachelines out according to how accesses
* in the texture surfaces run, so they may be "vertical" through
* memory. As a result, the docs say in Surface Padding Requirements:
* Sampling Engine Surfaces that two extra rows of padding are required.
* We don't know of similar requirements for pre-965, but given that
* those docs are silent on padding requirements in general, let's play
* it safe.
*/
if (mt->target == GL_TEXTURE_CUBE_MAP)
mt->total_height += 2;
break;
}