Mesa (master): i965/vec4: add a byte_offset helper
Iago Toral Quiroga
itoral at kemper.freedesktop.org
Thu Oct 27 09:03:22 UTC 2016
Module: Mesa
Branch: master
Commit: 5a4ce9f9a79934e4cfc2034c7d181a671e2563bf
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=5a4ce9f9a79934e4cfc2034c7d181a671e2563bf
Author: Iago Toral Quiroga <itoral at igalia.com>
Date: Mon Oct 3 13:24:22 2016 +0200
i965/vec4: add a byte_offset helper
v2: wrap the helper in a namespace to make clear that it is an
implementation detail of byte_offset() and is not intended
to be used independently (Curro).
Reviewed-by: Francisco Jerez <currojerez at riseup.net>
---
src/mesa/drivers/dri/i965/brw_ir_vec4.h | 50 +++++++++++++++++++++++++++++++++
1 file changed, 50 insertions(+)
diff --git a/src/mesa/drivers/dri/i965/brw_ir_vec4.h b/src/mesa/drivers/dri/i965/brw_ir_vec4.h
index a8e5f4a..1633c4c 100644
--- a/src/mesa/drivers/dri/i965/brw_ir_vec4.h
+++ b/src/mesa/drivers/dri/i965/brw_ir_vec4.h
@@ -60,6 +60,49 @@ retype(src_reg reg, enum brw_reg_type type)
return reg;
}
+namespace detail {
+
+static inline void
+add_byte_offset(backend_reg *reg, unsigned bytes)
+{
+ switch (reg->file) {
+ case BAD_FILE:
+ break;
+ case VGRF:
+ case ATTR:
+ case UNIFORM:
+ reg->offset += bytes;
+ assert(reg->offset % 16 == 0);
+ break;
+ case MRF: {
+ const unsigned suboffset = reg->offset + bytes;
+ reg->nr += suboffset / REG_SIZE;
+ reg->offset = suboffset % REG_SIZE;
+ assert(reg->offset % 16 == 0);
+ break;
+ }
+ case ARF:
+ case FIXED_GRF: {
+ const unsigned suboffset = reg->subnr + bytes;
+ reg->nr += suboffset / REG_SIZE;
+ reg->subnr = suboffset % REG_SIZE;
+ assert(reg->subnr % 16 == 0);
+ break;
+ }
+ default:
+ assert(bytes == 0);
+ }
+}
+
+} /* namepace detail */
+
+static inline src_reg
+byte_offset(src_reg reg, unsigned bytes)
+{
+ detail::add_byte_offset(®, bytes);
+ return reg;
+}
+
static inline src_reg
offset(src_reg reg, unsigned delta)
{
@@ -130,6 +173,13 @@ retype(dst_reg reg, enum brw_reg_type type)
}
static inline dst_reg
+byte_offset(dst_reg reg, unsigned bytes)
+{
+ detail::add_byte_offset(®, bytes);
+ return reg;
+}
+
+static inline dst_reg
offset(dst_reg reg, unsigned delta)
{
assert(delta == 0 ||
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