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i965/fs: Implement lowering of logical surface instructions.

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Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
This commit is contained in:
Francisco Jerez 2015-07-14 18:42:57 +03:00
parent 086d29f4d7
commit 3352724dfa
1 changed files with 55 additions and 8 deletions
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63
src/mesa/drivers/dri/i965/brw_fs.cpp
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@ -3890,6 +3890,20 @@ lower_sampler_logical_send(const fs_builder &bld, fs_inst *inst, opcode op)
}
}
/**
* Initialize the header present in some typed and untyped surface
* messages.
*/
static fs_reg
emit_surface_header(const fs_builder &bld, const fs_reg &sample_mask)
{
fs_builder ubld = bld.exec_all().group(8, 0);
const fs_reg dst = ubld.vgrf(BRW_REGISTER_TYPE_UD);
ubld.MOV(dst, fs_reg(0));
ubld.MOV(component(dst, 7), sample_mask);
return dst;
}
static void
lower_surface_logical_send(const fs_builder &bld, fs_inst *inst, opcode op,
const fs_reg &sample_mask)
@ -3898,10 +3912,43 @@ lower_surface_logical_send(const fs_builder &bld, fs_inst *inst, opcode op,
const fs_reg &addr = inst->src[0];
const fs_reg &src = inst->src[1];
const fs_reg &surface = inst->src[2];
const fs_reg &dims = inst->src[3];
const UNUSED fs_reg &dims = inst->src[3];
const fs_reg &arg = inst->src[4];
assert(!"Not implemented");
/* Calculate the total number of components of the payload. */
const unsigned addr_sz = inst->components_read(0);
const unsigned src_sz = inst->components_read(1);
const unsigned header_sz = (sample_mask.file == BAD_FILE ? 0 : 1);
const unsigned sz = header_sz + addr_sz + src_sz;
/* Allocate space for the payload. */
fs_reg *const components = new fs_reg[sz];
const fs_reg payload = bld.vgrf(BRW_REGISTER_TYPE_UD, sz);
unsigned n = 0;
/* Construct the payload. */
if (header_sz)
components[n++] = emit_surface_header(bld, sample_mask);
for (unsigned i = 0; i < addr_sz; i++)
components[n++] = offset(addr, bld, i);
for (unsigned i = 0; i < src_sz; i++)
components[n++] = offset(src, bld, i);
bld.LOAD_PAYLOAD(payload, components, sz, header_sz);
/* Update the original instruction. */
inst->opcode = op;
inst->mlen = header_sz + (addr_sz + src_sz) * inst->exec_size / 8;
inst->header_size = header_sz;
inst->src[0] = payload;
inst->src[1] = surface;
inst->src[2] = arg;
inst->resize_sources(3);
delete[] components;
}
bool
@ -3974,37 +4021,37 @@ fs_visitor::lower_logical_sends()
case SHADER_OPCODE_UNTYPED_SURFACE_READ_LOGICAL:
lower_surface_logical_send(ibld, inst,
SHADER_OPCODE_UNTYPED_SURFACE_READ,
fs_reg());
fs_reg(0xffff));
break;
case SHADER_OPCODE_UNTYPED_SURFACE_WRITE_LOGICAL:
lower_surface_logical_send(ibld, inst,
SHADER_OPCODE_UNTYPED_SURFACE_WRITE,
fs_reg());
ibld.sample_mask_reg());
break;
case SHADER_OPCODE_UNTYPED_ATOMIC_LOGICAL:
lower_surface_logical_send(ibld, inst,
SHADER_OPCODE_UNTYPED_ATOMIC,
fs_reg());
ibld.sample_mask_reg());
break;
case SHADER_OPCODE_TYPED_SURFACE_READ_LOGICAL:
lower_surface_logical_send(ibld, inst,
SHADER_OPCODE_TYPED_SURFACE_READ,
fs_reg());
fs_reg(0xffff));
break;
case SHADER_OPCODE_TYPED_SURFACE_WRITE_LOGICAL:
lower_surface_logical_send(ibld, inst,
SHADER_OPCODE_TYPED_SURFACE_WRITE,
fs_reg());
ibld.sample_mask_reg());
break;
case SHADER_OPCODE_TYPED_ATOMIC_LOGICAL:
lower_surface_logical_send(ibld, inst,
SHADER_OPCODE_TYPED_ATOMIC,
fs_reg());
ibld.sample_mask_reg());
break;
default: