anv/lower_ycbcr: make sure to set 0s on all components

To play around with debugging, we might want to disable one or the
other component. Having 0s as default values makes this work.
Otherwise we might have NULL components, leading to crashes.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

diff --git a/src/intel/vulkan/anv_nir_lower_ycbcr_textures.c b/src/intel/vulkan/anv_nir_lower_ycbcr_textures.c
index 3962356..97cfe94 100644 (file)
--- a/src/intel/vulkan/anv_nir_lower_ycbcr_textures.c
+++ b/src/intel/vulkan/anv_nir_lower_ycbcr_textures.c
@@ -373,11 +373,11 @@ try_lower_tex_ycbcr(struct anv_pipeline_layout *layout,
    uint8_t y_bpc = y_isl_layout->channels_array[0].bits;
 
    /* |ycbcr_comp| holds components in the order : Cr-Y-Cb */
-   nir_ssa_def *ycbcr_comp[5] = { NULL, NULL, NULL,
-                                  /* Use extra 2 channels for following swizzle */
-                                  nir_imm_float(builder, 1.0f),
-                                  nir_imm_float(builder, 0.0f),
-   };
+   nir_ssa_def *zero = nir_imm_float(builder, 0.0f);
+   nir_ssa_def *one = nir_imm_float(builder, 1.0f);
+   /* Use extra 2 channels for following swizzle */
+   nir_ssa_def *ycbcr_comp[5] = { zero, zero, zero, one, zero };
+
    uint8_t ycbcr_bpcs[5];
    memset(ycbcr_bpcs, y_bpc, sizeof(ycbcr_bpcs));