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intel/fs: Rework INTERPOLATE_AT_PER_SLOT_OFFSET

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This reworks INTERPOLATE_AT_PER_SLOT_OFFSET to work more like an ALU
operation and less like a send.  This is less code over-all and, as a
side-effect, it now properly handles execution groups and lowering so
SIMD32 support just falls out.

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Francisco Jerez
2016-04-25 18:06:13 -07:00
committed by Jason Ekstrand
parent 74b477039d
commit 73d60455e9
3 changed files with 9 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
src/intel/compiler/brw_fs.cpp
View File

@@ -805,6 +805,8 @@ fs_inst::components_read(unsigned i) const
else
return 1;
}
case FS_OPCODE_INTERPOLATE_AT_PER_SLOT_OFFSET:
return (i == 0 ? 2 : 1);
default:
return 1;
@@ -840,7 +842,6 @@ fs_inst::size_read(int arg) const
case SHADER_OPCODE_TYPED_SURFACE_WRITE:
case FS_OPCODE_INTERPOLATE_AT_SAMPLE:
case FS_OPCODE_INTERPOLATE_AT_SHARED_OFFSET:
case FS_OPCODE_INTERPOLATE_AT_PER_SLOT_OFFSET:
case SHADER_OPCODE_BYTE_SCATTERED_WRITE:
case SHADER_OPCODE_BYTE_SCATTERED_READ:
if (arg == 0)

8
src/intel/compiler/brw_fs_generator.cpp
View File

@@ -1579,16 +1579,18 @@ fs_generator::generate_pixel_interpolator_query(fs_inst *inst,
struct brw_reg msg_data,
unsigned msg_type)
{
assert(inst->size_written % REG_SIZE == 0);
const bool has_payload = inst->src[0].file != BAD_FILE;
assert(msg_data.type == BRW_REGISTER_TYPE_UD);
assert(inst->size_written % REG_SIZE == 0);
brw_pixel_interpolator_query(p,
retype(dst, BRW_REGISTER_TYPE_UW),
src,
/* If we don't have a payload, what we send doesn't matter */
has_payload ? src : brw_vec8_grf(0, 0),
inst->pi_noperspective,
msg_type,
msg_data,
inst->mlen,
has_payload ? 2 * inst->exec_size / 8 : 1,
inst->size_written / REG_SIZE);
}

17
src/intel/compiler/brw_fs_nir.cpp
View File

@@ -1795,21 +1795,8 @@ emit_pixel_interpolater_send(const fs_builder &bld,
{
struct brw_wm_prog_data *wm_prog_data =
brw_wm_prog_data(bld.shader->stage_prog_data);
fs_inst *inst;
fs_reg payload;
int mlen;
if (src.file == BAD_FILE) {
/* Dummy payload */
payload = bld.vgrf(BRW_REGISTER_TYPE_F, 1);
mlen = 1;
} else {
payload = src;
mlen = 2 * bld.dispatch_width() / 8;
}
inst = bld.emit(opcode, dst, payload, desc);
inst->mlen = mlen;
fs_inst *inst = bld.emit(opcode, dst, src, desc);
/* 2 floats per slot returned */
inst->size_written = 2 * dst.component_size(inst->exec_size);
inst->pi_noperspective = interpolation == INTERP_MODE_NOPERSPECTIVE;
@@ -3464,7 +3451,7 @@ fs_visitor::nir_emit_fs_intrinsic(const fs_builder &bld,
FS_OPCODE_INTERPOLATE_AT_SAMPLE,
dest,
fs_reg(), /* src */
msg_data,
component(msg_data, 0),
interpolation);
set_predicate(BRW_PREDICATE_NORMAL, inst);