[Freedreno] [PATCH] freedreno/a4xx: fix 3d texture setup

[Ilia Mirkin]

Same fix as on a3xx - set the second (tiny) layer size bitfield to the
smallest level's size so that the hw knows not to minify beyond that.

This fixes texelFetch sampler3D piglits.

Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
Cc: mesa-stable at lists.freedesktop.org
---
 src/gallium/drivers/freedreno/a4xx/fd4_emit.c    | 2 +-
 src/gallium/drivers/freedreno/a4xx/fd4_texture.c | 6 +++++-
 src/gallium/drivers/freedreno/a4xx/fd4_texture.h | 2 +-
 3 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/gallium/drivers/freedreno/a4xx/fd4_emit.c b/src/gallium/drivers/freedreno/a4xx/fd4_emit.c
index be5e560..2d41cfe 100644
--- a/src/gallium/drivers/freedreno/a4xx/fd4_emit.c
+++ b/src/gallium/drivers/freedreno/a4xx/fd4_emit.c
@@ -194,7 +194,7 @@ emit_textures(struct fd_context *ctx, struct fd_ringbuffer *ring,
 			if (view->base.texture) {
 				struct fd_resource *rsc = fd_resource(view->base.texture);
 				uint32_t offset = fd_resource_offset(rsc, start, 0);
-				OUT_RELOC(ring, rsc->bo, offset, view->textconst4, 0);
+				OUT_RELOC(ring, rsc->bo, offset, view->texconst4, 0);
 			} else {
 				OUT_RING(ring, 0x00000000);
 			}
diff --git a/src/gallium/drivers/freedreno/a4xx/fd4_texture.c b/src/gallium/drivers/freedreno/a4xx/fd4_texture.c
index 75b083b..598f1e1 100644
--- a/src/gallium/drivers/freedreno/a4xx/fd4_texture.c
+++ b/src/gallium/drivers/freedreno/a4xx/fd4_texture.c
@@ -214,6 +214,7 @@ fd4_sampler_view_create(struct pipe_context *pctx, struct pipe_resource *prsc,
 	struct fd_resource *rsc = fd_resource(prsc);
 	unsigned lvl = fd_sampler_first_level(cso);
 	unsigned miplevels = fd_sampler_last_level(cso) - lvl;
+	uint32_t sz2 = 0;
 
 	if (!so)
 		return NULL;
@@ -259,7 +260,10 @@ fd4_sampler_view_create(struct pipe_context *pctx, struct pipe_resource *prsc,
 	case PIPE_TEXTURE_3D:
 		so->texconst3 =
 			A4XX_TEX_CONST_3_DEPTH(u_minify(prsc->depth0, lvl)) |
-			A4XX_TEX_CONST_3_LAYERSZ(rsc->slices[0].size0);
+			A4XX_TEX_CONST_3_LAYERSZ(rsc->slices[lvl].size0);
+		while (lvl < cso->u.tex.last_level && sz2 != rsc->slices[lvl+1].size0)
+			sz2 = rsc->slices[++lvl].size0;
+		so->texconst4 = A4XX_TEX_CONST_4_LAYERSZ(sz2);
 		break;
 	default:
 		so->texconst3 = 0x00000000;
diff --git a/src/gallium/drivers/freedreno/a4xx/fd4_texture.h b/src/gallium/drivers/freedreno/a4xx/fd4_texture.h
index 3195577..d74d887 100644
--- a/src/gallium/drivers/freedreno/a4xx/fd4_texture.h
+++ b/src/gallium/drivers/freedreno/a4xx/fd4_texture.h
@@ -51,7 +51,7 @@ fd4_sampler_stateobj(struct pipe_sampler_state *samp)
 
 struct fd4_pipe_sampler_view {
 	struct pipe_sampler_view base;
-	uint32_t texconst0, texconst1, texconst2, texconst3, textconst4;
+	uint32_t texconst0, texconst1, texconst2, texconst3, texconst4;
 };
 
 static inline struct fd4_pipe_sampler_view *
-- 
2.4.10