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authorFrancisco Jerez <[email protected]>2015-07-14 18:42:57 +0300
committerFrancisco Jerez <[email protected]>2015-07-29 14:12:49 +0300
commit3352724dfa4eb5c93290db92ae99d26d9b89e630 (patch)
treecae038b6fd2edc13f24995a6ea16994590d2d9e4
parent086d29f4d747bbcfe37beeb18ba77fb2cb84dbdc (diff)
i965/fs: Implement lowering of logical surface instructions.
Reviewed-by: Jason Ekstrand <[email protected]>
-rw-r--r--src/mesa/drivers/dri/i965/brw_fs.cpp63
1 files changed, 55 insertions, 8 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp
index 7aa77ff6591..a9e8dc47cfc 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
@@ -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: