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nir: Allow nir_lower_io() to only lower one type of variable.

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We may want to use different type_size functions for (e.g.) inputs
vs. uniforms.  Passing in -1 for mode ignores this, handling all
modes as before.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Kenneth Graunke
2015-08-12 15:14:35 -07:00
parent 1c6689bf03
commit 39a1d36a67
3 changed files with 20 additions and 6 deletions
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21
src/glsl/nir/nir_lower_io.c
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@@ -38,6 +38,7 @@ struct lower_io_state {
nir_builder builder;
void *mem_ctx;
int (*type_size)(const struct glsl_type *type);
nir_variable_mode mode;
};
void
@@ -154,9 +155,17 @@ nir_lower_io_block(nir_block *block, void *void_state)
nir_intrinsic_instr *intrin = nir_instr_as_intrinsic(instr);
if (intrin->intrinsic != nir_intrinsic_load_var &&
intrin->intrinsic != nir_intrinsic_store_var)
continue;
nir_variable_mode mode = intrin->variables[0]->var->data.mode;
if (state->mode != -1 && state->mode != mode)
continue;
switch (intrin->intrinsic) {
case nir_intrinsic_load_var: {
nir_variable_mode mode = intrin->variables[0]->var->data.mode;
if (mode != nir_var_shader_in && mode != nir_var_uniform)
continue;
@@ -239,12 +248,15 @@ nir_lower_io_block(nir_block *block, void *void_state)
}
static void
nir_lower_io_impl(nir_function_impl *impl, int(*type_size)(const struct glsl_type *))
nir_lower_io_impl(nir_function_impl *impl,
nir_variable_mode mode,
int (*type_size)(const struct glsl_type *))
{
struct lower_io_state state;
nir_builder_init(&state.builder, impl);
state.mem_ctx = ralloc_parent(impl);
state.mode = mode;
state.type_size = type_size;
nir_foreach_block(impl, nir_lower_io_block, &state);
@@ -254,10 +266,11 @@ nir_lower_io_impl(nir_function_impl *impl, int(*type_size)(const struct glsl_typ
}
void
nir_lower_io(nir_shader *shader, int(*type_size)(const struct glsl_type *))
nir_lower_io(nir_shader *shader, nir_variable_mode mode,
int (*type_size)(const struct glsl_type *))
{
nir_foreach_overload(shader, overload) {
if (overload->impl)
nir_lower_io_impl(overload->impl, type_size);
nir_lower_io_impl(overload->impl, mode, type_size);
}
}