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/*
* Copyright © 2015 Red Hat
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "nir.h"
#include "nir_builder.h"
static bool
lower_input(nir_shader *shader, nir_variable *var)
{
if (var->data.interpolation == INTERP_MODE_NONE &&
(var->data.location == VARYING_SLOT_COL0 ||
var->data.location == VARYING_SLOT_COL1 ||
var->data.location == VARYING_SLOT_BFC0 ||
var->data.location == VARYING_SLOT_BFC1))
var->data.interpolation = INTERP_MODE_FLAT;
return true;
}
bool
nir_lower_flatshade(nir_shader *shader)
{
bool progress = false;
nir_foreach_variable(var, &shader->inputs) {
progress |= lower_input(shader, var);
}
return progress;
}
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