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freedreno/ir3: Emit link map as byte or dwords offsets as needed

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Stages that load inputs with ldlw (TCS, GS) need byte offsets, stages
that load with ldg (TES) need dwords offsets.

Signed-off-by: Kristian H. Kristensen <hoegsberg@google.com>
Acked-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Kristian H. Kristensen 2019-10-22 16:07:45 -07:00
parent 1f3b52ce50
commit 5d67da13a3
1 changed files with 16 additions and 2 deletions
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18
src/gallium/drivers/freedreno/ir3/ir3_gallium.c
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@ -400,13 +400,27 @@ link_geometry_stages(const struct ir3_shader_variant *producer,
const struct ir3_shader_variant *consumer,
uint32_t *locs)
{
uint32_t num_loc = 0;
uint32_t num_loc = 0, factor;
switch (consumer->type) {
case MESA_SHADER_TESS_CTRL:
case MESA_SHADER_GEOMETRY:
/* These stages load with ldlw, which expects byte offsets. */
factor = 4;
break;
case MESA_SHADER_TESS_EVAL:
/* The tess eval shader uses ldg, which takes dword offsets. */
factor = 1;
break;
default:
unreachable("bad shader stage");
}
nir_foreach_variable(in_var, &consumer->shader->nir->inputs) {
nir_foreach_variable(out_var, &producer->shader->nir->outputs) {
if (in_var->data.location == out_var->data.location) {
locs[in_var->data.driver_location] =
producer->shader->output_loc[out_var->data.driver_location] * 4;
producer->shader->output_loc[out_var->data.driver_location] * factor;
debug_assert(num_loc <= in_var->data.driver_location + 1);
num_loc = in_var->data.driver_location + 1;