KonstantinSeurer
/
mesa
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

i965/gen9: Set horizontal alignment for the miptree 

v3: Use ffs() and a switch loop in
    tr_mode_vertical_texture_alignment() (Ben)

Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
This commit is contained in:
Anuj Phogat 2015-04-14 22:06:48 -07:00
parent 126078faca
commit 447410b664
1 changed files with 81 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

81
src/mesa/drivers/dri/i965/brw_tex_layout.c
View File

@ -39,6 +39,81 @@
#define FILE_DEBUG_FLAG DEBUG_MIPTREE
static unsigned int
tr_mode_horizontal_texture_alignment(const struct brw_context *brw,
const struct intel_mipmap_tree *mt)
{
const unsigned *align_yf, *align_ys;
const unsigned bpp = _mesa_get_format_bytes(mt->format) * 8;
unsigned ret_align, divisor;
/* Horizontal alignment tables for TRMODE_{YF,YS}. Value in below
* tables specifies the horizontal alignment requirement in elements
* for the surface. An element is defined as a pixel in uncompressed
* surface formats, and as a compression block in compressed surface
* formats. For MSFMT_DEPTH_STENCIL type multisampled surfaces, an
* element is a sample.
*/
const unsigned align_1d_yf[] = {4096, 2048, 1024, 512, 256};
const unsigned align_1d_ys[] = {65536, 32768, 16384, 8192, 4096};
const unsigned align_2d_yf[] = {64, 64, 32, 32, 16};
const unsigned align_2d_ys[] = {256, 256, 128, 128, 64};
const unsigned align_3d_yf[] = {16, 8, 8, 8, 4};
const unsigned align_3d_ys[] = {64, 32, 32, 32, 16};
int i = 0;
/* Alignment computations below assume bpp >= 8 and a power of 2. */
assert (bpp >= 8 && bpp <= 128 && is_power_of_two(bpp));
switch(mt->target) {
case GL_TEXTURE_1D:
case GL_TEXTURE_1D_ARRAY:
align_yf = align_1d_yf;
align_ys = align_1d_ys;
break;
case GL_TEXTURE_2D:
case GL_TEXTURE_RECTANGLE:
case GL_TEXTURE_2D_ARRAY:
case GL_TEXTURE_CUBE_MAP:
case GL_TEXTURE_CUBE_MAP_ARRAY:
case GL_TEXTURE_2D_MULTISAMPLE:
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
align_yf = align_2d_yf;
align_ys = align_2d_ys;
break;
case GL_TEXTURE_3D:
align_yf = align_3d_yf;
align_ys = align_3d_ys;
break;
default:
unreachable("not reached");
}
/* Compute array index. */
i = ffs(bpp/8) - 1;
ret_align = mt->tr_mode == INTEL_MIPTREE_TRMODE_YF ?
align_yf[i] : align_ys[i];
assert(is_power_of_two(mt->num_samples));
switch (mt->num_samples) {
case 2:
case 4:
divisor = 2;
break;
case 8:
case 16:
divisor = 4;
break;
default:
divisor = 1;
break;
}
return ret_align / divisor;
}
static unsigned int
intel_horizontal_texture_alignment_unit(struct brw_context *brw,
struct intel_mipmap_tree *mt)
@ -88,6 +163,12 @@ intel_horizontal_texture_alignment_unit(struct brw_context *brw,
if (mt->format == MESA_FORMAT_S_UINT8)
return 8;
if (brw->gen >= 9 && mt->tr_mode != INTEL_MIPTREE_TRMODE_NONE) {
uint32_t align = tr_mode_horizontal_texture_alignment(brw, mt);
/* XY_FAST_COPY_BLT doesn't support horizontal alignment < 32. */
return align < 32 ? 32 : align;
}
if (brw->gen >= 7 && mt->format == MESA_FORMAT_Z_UNORM16)
return 8;