nvc0: invalidate textures/samplers between 3D and CP on Fermi

Like constant buffers, samplers and textures are aliased on Fermi and
we need to invalidate the state when switching from 3D to CP and vice
versa.

This fixes rendering issues in the UE4 demos.

Signed-off-by: Samuel Pitoiset <[email protected]>
Reviewed-by: Ilia Mirkin <[email protected]>

1 files changed, 14 insertions, 0 deletions

diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_tex.c b/src/gallium/drivers/nouveau/nvc0/nvc0_tex.c
index 2523c20edc7..d36cea7a60c 100644
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_tex.c
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_tex.c
@@ -588,6 +588,14 @@ void nvc0_validate_textures(struct nvc0_context *nvc0)
       BEGIN_NVC0(nvc0->base.pushbuf, NVC0_3D(TIC_FLUSH), 1);
       PUSH_DATA (nvc0->base.pushbuf, 0);
    }
+
+   if (nvc0->screen->base.class_3d < NVE4_3D_CLASS) {
+      /* Invalidate all CP textures because they are aliased. */
+      for (int i = 0; i < nvc0->num_textures[5]; i++)
+         nouveau_bufctx_reset(nvc0->bufctx_3d, NVC0_BIND_CP_TEX(i));
+      nvc0->textures_dirty[5] = ~0;
+      nvc0->dirty_cp |= NVC0_NEW_CP_TEXTURES;
+   }
 }
 
 bool
@@ -700,6 +708,12 @@ void nvc0_validate_samplers(struct nvc0_context *nvc0)
       BEGIN_NVC0(nvc0->base.pushbuf, NVC0_3D(TSC_FLUSH), 1);
       PUSH_DATA (nvc0->base.pushbuf, 0);
    }
+
+   if (nvc0->screen->base.class_3d < NVE4_3D_CLASS) {
+      /* Invalidate all CP samplers because they are aliased. */
+      nvc0->samplers_dirty[5] = ~0;
+      nvc0->dirty_cp |= NVC0_NEW_CP_SAMPLERS;
+   }
 }
 
 /* Upload the "diagonal" entries for the possible texture sources ($t == $s).