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-rw-r--r--src/mesa/drivers/dri/i965/brw_context.c7
-rw-r--r--src/mesa/drivers/dri/i965/brw_context.h1
-rw-r--r--src/mesa/drivers/dri/i965/gen6_urb.c2
-rw-r--r--src/mesa/drivers/dri/i965/gen7_urb.c7
4 files changed, 13 insertions, 4 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_context.c b/src/mesa/drivers/dri/i965/brw_context.c
index d0b2fc1fdc8..4fcc9fbce8c 100644
--- a/src/mesa/drivers/dri/i965/brw_context.c
+++ b/src/mesa/drivers/dri/i965/brw_context.c
@@ -361,6 +361,7 @@ brwCreateContext(int api,
brw->max_vs_threads = 70;
brw->max_gs_threads = 70;
brw->urb.size = 128;
+ brw->urb.min_vs_entries = 32;
brw->urb.max_vs_entries = 640;
brw->urb.max_gs_entries = 256;
} else if (brw->gt == 2) {
@@ -368,6 +369,7 @@ brwCreateContext(int api,
brw->max_vs_threads = 280;
brw->max_gs_threads = 256;
brw->urb.size = 256;
+ brw->urb.min_vs_entries = 64;
brw->urb.max_vs_entries = 1664;
brw->urb.max_gs_entries = 640;
} else if (brw->gt == 3) {
@@ -375,6 +377,7 @@ brwCreateContext(int api,
brw->max_vs_threads = 280;
brw->max_gs_threads = 256;
brw->urb.size = 512;
+ brw->urb.min_vs_entries = 64;
brw->urb.max_vs_entries = 1664;
brw->urb.max_gs_entries = 640;
}
@@ -384,6 +387,7 @@ brwCreateContext(int api,
brw->max_vs_threads = 36;
brw->max_gs_threads = 36;
brw->urb.size = 128;
+ brw->urb.min_vs_entries = 32;
brw->urb.max_vs_entries = 512;
brw->urb.max_gs_entries = 192;
} else if (brw->gt == 2) {
@@ -391,6 +395,7 @@ brwCreateContext(int api,
brw->max_vs_threads = 128;
brw->max_gs_threads = 128;
brw->urb.size = 256;
+ brw->urb.min_vs_entries = 32;
brw->urb.max_vs_entries = 704;
brw->urb.max_gs_entries = 320;
} else {
@@ -402,6 +407,7 @@ brwCreateContext(int api,
brw->max_vs_threads = 60;
brw->max_gs_threads = 60;
brw->urb.size = 64; /* volume 5c.5 section 5.1 */
+ brw->urb.min_vs_entries = 24;
brw->urb.max_vs_entries = 256; /* volume 2a (see 3DSTATE_URB) */
brw->urb.max_gs_entries = 256;
} else {
@@ -409,6 +415,7 @@ brwCreateContext(int api,
brw->max_vs_threads = 24;
brw->max_gs_threads = 21; /* conservative; 24 if rendering disabled */
brw->urb.size = 32; /* volume 5c.5 section 5.1 */
+ brw->urb.min_vs_entries = 24;
brw->urb.max_vs_entries = 256; /* volume 2a (see 3DSTATE_URB) */
brw->urb.max_gs_entries = 256;
}
diff --git a/src/mesa/drivers/dri/i965/brw_context.h b/src/mesa/drivers/dri/i965/brw_context.h
index 64371cf39c2..57f086bdb5c 100644
--- a/src/mesa/drivers/dri/i965/brw_context.h
+++ b/src/mesa/drivers/dri/i965/brw_context.h
@@ -1073,6 +1073,7 @@ struct brw_context
bool constrained;
+ GLuint min_vs_entries; /* Minimum number of VS entries */
GLuint max_vs_entries; /* Maximum number of VS entries */
GLuint max_gs_entries; /* Maximum number of GS entries */
diff --git a/src/mesa/drivers/dri/i965/gen6_urb.c b/src/mesa/drivers/dri/i965/gen6_urb.c
index e16d30aa13a..bb4cfa80a49 100644
--- a/src/mesa/drivers/dri/i965/gen6_urb.c
+++ b/src/mesa/drivers/dri/i965/gen6_urb.c
@@ -83,7 +83,7 @@ gen6_upload_urb( struct brw_context *brw )
brw->urb.nr_vs_entries = ROUND_DOWN_TO(nr_vs_entries, 4);
brw->urb.nr_gs_entries = ROUND_DOWN_TO(nr_gs_entries, 4);
- assert(brw->urb.nr_vs_entries >= 24);
+ assert(brw->urb.nr_vs_entries >= brw->urb.min_vs_entries);
assert(brw->urb.nr_vs_entries % 4 == 0);
assert(brw->urb.nr_gs_entries % 4 == 0);
assert(vs_size < 5);
diff --git a/src/mesa/drivers/dri/i965/gen7_urb.c b/src/mesa/drivers/dri/i965/gen7_urb.c
index 66831171b4e..6dcdfe4fa44 100644
--- a/src/mesa/drivers/dri/i965/gen7_urb.c
+++ b/src/mesa/drivers/dri/i965/gen7_urb.c
@@ -195,9 +195,10 @@ gen7_upload_urb(struct brw_context *brw)
* additional space it could actually make use of).
*/
- /* VS always requires at least 32 URB entries */
+ /* VS has a lower limit on the number of URB entries */
unsigned vs_chunks =
- ALIGN(32 * vs_entry_size_bytes, chunk_size_bytes) / chunk_size_bytes;
+ ALIGN(brw->urb.min_vs_entries * vs_entry_size_bytes, chunk_size_bytes) /
+ chunk_size_bytes;
unsigned vs_wants =
ALIGN(brw->urb.max_vs_entries * vs_entry_size_bytes,
chunk_size_bytes) / chunk_size_bytes - vs_chunks;
@@ -261,7 +262,7 @@ gen7_upload_urb(struct brw_context *brw)
/* Finally, sanity check to make sure we have at least the minimum number
* of entries needed for each stage.
*/
- assert(nr_vs_entries >= 32);
+ assert(nr_vs_entries >= brw->urb.min_vs_entries);
if (gs_present)
assert(nr_gs_entries >= 2);