i965/gen7: expose larger gather offsets

This matches the capabilities of the hardware.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

diff --git a/src/mesa/drivers/dri/i965/brw_context.c b/src/mesa/drivers/dri/i965/brw_context.c
index 6aeb12ddced8959845c4c9f8c424b64683e26a31..b928f94e188ec867591a4c34f838f87f59570fb6 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_context.c
+++ b/src/mesa/drivers/dri/i965/brw_context.c
@@ -536,10 +536,15 @@ brw_initialize_context_constants(struct brw_context *brw)
    ctx->Const.MaxTextureRectSize = 1 << 12;
    ctx->Const.MaxTextureMaxAnisotropy = 16.0;
    ctx->Const.StripTextureBorder = true;
-   if (brw->gen >= 7)
+   if (brw->gen >= 7) {
       ctx->Const.MaxProgramTextureGatherComponents = 4;
-   else if (brw->gen == 6)
+      ctx->Const.MinProgramTextureGatherOffset = -32;
+      ctx->Const.MaxProgramTextureGatherOffset = 31;
+   } else if (brw->gen == 6) {
       ctx->Const.MaxProgramTextureGatherComponents = 1;
+      ctx->Const.MinProgramTextureGatherOffset = -8;
+      ctx->Const.MaxProgramTextureGatherOffset = 7;
+   }
 
    ctx->Const.MaxUniformBlockSize = 65536;