Mesa (master): radv/gfx10: compute the correct buffer size for NGG streamout

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Module: Mesa
Branch: master
Commit: b617156621ae46113766c6668fb717e06015c7a5
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=b617156621ae46113766c6668fb717e06015c7a5

Author: Samuel Pitoiset <samuel.pitoiset at gmail.com>
Date:   Mon Sep  9 11:04:07 2019 +0200

radv/gfx10: compute the correct buffer size for NGG streamout

It's used to determined the max emit per buffer.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas at basnieuwenhuizen.nl>

---

 src/amd/vulkan/radv_cmd_buffer.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/amd/vulkan/radv_cmd_buffer.c b/src/amd/vulkan/radv_cmd_buffer.c
index 22b89760bbb..5b736c67ae8 100644
--- a/src/amd/vulkan/radv_cmd_buffer.c
+++ b/src/amd/vulkan/radv_cmd_buffer.c
@@ -2495,9 +2495,18 @@ radv_flush_streamout_descriptors(struct radv_cmd_buffer *cmd_buffer)
 			 * the buffer will be considered not bound and store
 			 * instructions will be no-ops.
 			 */
+			uint32_t size = 0xffffffff;
+
+			/* Compute the correct buffer size for NGG streamout
+			 * because it's used to determine the max emit per
+			 * buffer.
+			 */
+			if (cmd_buffer->device->physical_device->use_ngg_streamout)
+				size = buffer->size - sb[i].offset;
+
 			desc[0] = va;
 			desc[1] = S_008F04_BASE_ADDRESS_HI(va >> 32);
-			desc[2] = 0xffffffff;
+			desc[2] = size;
 			desc[3] = S_008F0C_DST_SEL_X(V_008F0C_SQ_SEL_X) |
 				  S_008F0C_DST_SEL_Y(V_008F0C_SQ_SEL_Y) |
 				  S_008F0C_DST_SEL_Z(V_008F0C_SQ_SEL_Z) |