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authorKenneth Graunke <kenneth@whitecape.org>2015-10-26 00:52:14 -0700
committerKenneth Graunke <kenneth@whitecape.org>2015-10-28 22:05:08 -0700
commit5392328a3218c0a69301badefe8fed79ca0d8642 (patch)
treecf375f1e60fbe0c2a49e18910a9557ea0521f990 /src/mesa/drivers/dri/i965/gen7_sf_state.c
parentb3d19d20f27c9169641051ac6f855481e58623b3 (diff)
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i965: Make calculate_attr_overrides return the URB read offset.
Traditionally, we've hardcoded "URB Entry Read Offset" to 1 (which represents 2 vec4 varying slots) to skip over the 8 DWord VUE header. In order to support ARB_fragment_layer_viewport, we'll need to read from that header. This patch adds the basic plumbing necessary to calculate a value dynamically and hook it up in the SBE packets. Signed-off-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
Diffstat (limited to 'src/mesa/drivers/dri/i965/gen7_sf_state.c')
-rw-r--r--src/mesa/drivers/dri/i965/gen7_sf_state.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/src/mesa/drivers/dri/i965/gen7_sf_state.c b/src/mesa/drivers/dri/i965/gen7_sf_state.c
index 698b3d4..b1f13ac 100644
--- a/src/mesa/drivers/dri/i965/gen7_sf_state.c
+++ b/src/mesa/drivers/dri/i965/gen7_sf_state.c
@@ -40,7 +40,6 @@ upload_sbe_state(struct brw_context *brw)
uint32_t point_sprite_enables;
uint32_t flat_enables;
int i;
- const int urb_entry_read_offset = BRW_SF_URB_ENTRY_READ_OFFSET;
uint16_t attr_overrides[16];
/* _NEW_BUFFERS */
bool render_to_fbo = _mesa_is_user_fbo(ctx->DrawBuffer);
@@ -65,8 +64,10 @@ upload_sbe_state(struct brw_context *brw)
* _NEW_POINT | _NEW_LIGHT | _NEW_PROGRAM | BRW_NEW_FS_PROG_DATA
*/
uint32_t urb_entry_read_length;
+ uint32_t urb_entry_read_offset;
calculate_attr_overrides(brw, attr_overrides, &point_sprite_enables,
- &flat_enables, &urb_entry_read_length);
+ &flat_enables, &urb_entry_read_length,
+ &urb_entry_read_offset);
dw1 |= urb_entry_read_length << GEN7_SBE_URB_ENTRY_READ_LENGTH_SHIFT |
urb_entry_read_offset << GEN7_SBE_URB_ENTRY_READ_OFFSET_SHIFT;