Seems reasonable.

Reviewed-by: Timothy Arceri <tarc...@itsqueeze.com>

On 12/05/18 19:40, Alejandro PiƱeiro wrote:
From: Neil Roberts <nrobe...@igalia.com>

When SpvDecorationBinding is encountered in the SPIR-V source it now
sets explicit_binding on the nir_variable. This will be used to
determine whether to initialise sampler and image uniforms with the
binding value.
---
  src/compiler/spirv/vtn_private.h   | 1 +
  src/compiler/spirv/vtn_variables.c | 2 ++
  2 files changed, 3 insertions(+)

diff --git a/src/compiler/spirv/vtn_private.h b/src/compiler/spirv/vtn_private.h
index 98bec389fcd..5fc34f43809 100644
--- a/src/compiler/spirv/vtn_private.h
+++ b/src/compiler/spirv/vtn_private.h
@@ -452,6 +452,7 @@ struct vtn_variable {
unsigned descriptor_set;
     unsigned binding;
+   bool explicit_binding;
     unsigned input_attachment_index;
     bool patch;
diff --git a/src/compiler/spirv/vtn_variables.c b/src/compiler/spirv/vtn_variables.c
index 6d1eede5ed0..902b2373015 100644
--- a/src/compiler/spirv/vtn_variables.c
+++ b/src/compiler/spirv/vtn_variables.c
@@ -1503,6 +1503,7 @@ var_decoration_cb(struct vtn_builder *b, struct vtn_value 
*val, int member,
     switch (dec->decoration) {
     case SpvDecorationBinding:
        vtn_var->binding = dec->literals[0];
+      vtn_var->explicit_binding = true;
        return;
     case SpvDecorationDescriptorSet:
        vtn_var->descriptor_set = dec->literals[0];
@@ -1926,6 +1927,7 @@ vtn_create_variable(struct vtn_builder *b, struct 
vtn_value *val,
         * for these. We should fix that.
         */
        var->var->data.binding = var->binding;
+      var->var->data.explicit_binding = var->explicit_binding;
        var->var->data.descriptor_set = var->descriptor_set;
        var->var->data.index = var->input_attachment_index;
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