Whoop subject should be: nir: add always_active_io to nir variable
On 13/09/17 09:37, Timothy Arceri wrote:
Will be used in nir link pass to decided if we can remove a varying or not. --- src/compiler/glsl/glsl_to_nir.cpp | 1 + src/compiler/nir/nir.h | 10 ++++++++++ 2 files changed, 11 insertions(+) diff --git a/src/compiler/glsl/glsl_to_nir.cpp b/src/compiler/glsl/glsl_to_nir.cpp index bb2ba17b220..ea75e3c8e99 100644 --- a/src/compiler/glsl/glsl_to_nir.cpp +++ b/src/compiler/glsl/glsl_to_nir.cpp @@ -326,6 +326,7 @@ nir_visitor::visit(ir_variable *ir) var->type = ir->type; var->name = ralloc_strdup(var, ir->name);+ var->data.always_active_io = ir->data.always_active_io;var->data.read_only = ir->data.read_only; var->data.centroid = ir->data.centroid; var->data.sample = ir->data.sample; diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h index 8330e6d7ce7..fab2110f619 100644 --- a/src/compiler/nir/nir.h +++ b/src/compiler/nir/nir.h @@ -192,6 +192,16 @@ typedef struct nir_variable { unsigned invariant:1;/**+ * When separate shader programs are enabled, only input/outputs between + * the stages of a multi-stage separate program can be safely removed + * from the shader interface. Other input/outputs must remains active. + * + * This is also used to make sure xfb varyings that are unused by the + * fragment shader are not removed. + */ + unsigned always_active_io:1; + + /** * Interpolation mode for shader inputs / outputs * * \sa glsl_interp_mode
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