[Nouveau] [PATCH] nv50, nvc0: fix blit 3d path for 1d array textures

[Ilia Mirkin]

Need to adjust coordinates since the shader receives the array index as
depth in z, but the TEX instruction expects it to be the second
coordinate for a 1D array texture. This fixes fbo-generatemipmap-array.

Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
Cc: "10.2" <mesa-stable at lists.freedesktop.org>
---
 src/gallium/drivers/nouveau/nv50/nv50_surface.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/gallium/drivers/nouveau/nv50/nv50_surface.c b/src/gallium/drivers/nouveau/nv50/nv50_surface.c
index 8addefe..23613d8 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_surface.c
+++ b/src/gallium/drivers/nouveau/nv50/nv50_surface.c
@@ -698,6 +698,12 @@ nv50_blitter_make_fp(struct pipe_context *pipe,
    tc = ureg_DECL_fs_input(
       ureg, TGSI_SEMANTIC_GENERIC, 0, TGSI_INTERPOLATE_LINEAR);
 
+   if (ptarg == PIPE_TEXTURE_1D_ARRAY) {
+      /* Adjust coordinates. Depth is in z, but TEX expects it to be in y. */
+      tc = ureg_swizzle(tc, TGSI_SWIZZLE_X, TGSI_SWIZZLE_Z,
+                        TGSI_SWIZZLE_Z, TGSI_SWIZZLE_Z);
+   }
+
    data = ureg_DECL_temporary(ureg);
 
    if (tex_s) {
-- 
1.8.5.5