From: "Xiang, Haihao" <haihao.xiang@xxxxxxxxx>
The code is for reference only
v2: Fixed the source register used for the send with EOT
Fixed the posted destination operand for the send with EOT
v3: Fixed the cache agent used in media_block_write message on GEN8
Reviewed-by: Zhao Yakui <yakui.zhao@xxxxxxxxx>
Signed-off-by: Xiang, Haihao <haihao.xiang@xxxxxxxxx>
---
shaders/media/README | 5 +++++
shaders/media/media_fill.gxa | 44 ++++++++++++++++++++++++++++++++++++++++++
2 files changed, 49 insertions(+)
create mode 100644 shaders/media/README
create mode 100644 shaders/media/media_fill.gxa
diff --git a/shaders/media/README b/shaders/media/README
new file mode 100644
index 0000000..9f29601
--- /dev/null
+++ b/shaders/media/README
@@ -0,0 +1,5 @@
+These files are here for reference only.
+
+Commands used to generate the shader on gen8
+$> m4 media_fill.gxa > media_fill.gxm
+$> intel-gen4asm -g 8 -o <output> media_fill.gxm
diff --git a/shaders/media/media_fill.gxa b/shaders/media/media_fill.gxa
new file mode 100644
index 0000000..7578890
--- /dev/null
+++ b/shaders/media/media_fill.gxa
@@ -0,0 +1,44 @@
+/*
+ * Registers
+ * g0 -- header
+ * g1 -- constant
+ * g2 -- inline data
+ * g3 -- reserved
+ * g4-g12 payload for write message
+ */
+define(`ORIG', `g2.0<2,2,1>UD')
+define(`COLOR', `g1.0')
+define(`COLORUB', `COLOR<0,1,0>UB')
+define(`COLORUD', `COLOR<0,1,0>UD')
+
+mov(4) COLOR<1>UB COLORUB {align1};
+
+/* WRITE */
+mov(8) g4.0<1>UD g0.0<8,8,1>UD {align1};
+mov(2) g4.0<1>UD ORIG {align1};
+mov(1) g4.8<1>UD 0x000f000fUD {align1};
+
+mov(16) g5.0<1>UD COLORUD {align1 compr};
+mov(16) g7.0<1>UD COLORUD {align1 compr};
+mov(16) g9.0<1>UD COLORUD {align1 compr};
+mov(16) g11.0<1>UD COLORUD {align1 compr};
+
+/*
+ * comment out the following instruction on Gen7
+ * write(0, 0, 10, 12)
+ * 10: media_block_write
+ * 12: data cache data port 1
+ */
+send(16) 4 acc0<1>UW null write(0, 0, 10, 12) mlen 9 rlen 0 {align1};
+
+/*
+ * uncomment the following instruction on Gen7
+ * write(0, 0, 10, 0)
+ * 10: media_block_write
+ * 0: reander cache data port
+ */
+/* send(16) 4 acc0<1>UW null write(0, 0, 10, 0) mlen 9 rlen 0 {align1}; */
+
+/* EOT */
+mov(8) g112.0<1>UD g0.0<8,8,1>UD {align1};
+send(16) 112 null<1>UW null thread_spawner(0, 0, 1) mlen 1 rlen 0 {align1 EOT};
--
1.7.9.5
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