If the shader is monolithic, the value of SPI_PS_INPUT_ENA that is
generated by LLVM is used as-is.
Marek
On Fri, Jun 21, 2019 at 7:03 PM Bas Nieuwenhuizen <b...@basnieuwenhuizen.nl>
wrote:
> Doesn't this cause assertions in si_shader_ps() for monolithic
> shaders? Some of these assertions check that at least one bit in a
> group is set and I think we end up with input_ena = 0 for monolithic
> shaders now?
>
> On Thu, Jun 20, 2019 at 6:20 AM Marek Olšák <mar...@gmail.com> wrote:
> >
> > From: Marek Olšák <marek.ol...@amd.com>
> >
> > The driver doesn't use these values and ac_rtld has assertions
> > expecting the value of 0.
> > ---
> > src/gallium/drivers/radeonsi/si_shader.c | 39 ++++++++++++++++--------
> > 1 file changed, 26 insertions(+), 13 deletions(-)
> >
> > diff --git a/src/gallium/drivers/radeonsi/si_shader.c
> b/src/gallium/drivers/radeonsi/si_shader.c
> > index 54b29d0ae01..0489399b827 100644
> > --- a/src/gallium/drivers/radeonsi/si_shader.c
> > +++ b/src/gallium/drivers/radeonsi/si_shader.c
> > @@ -6128,21 +6128,22 @@ static void si_get_ps_prolog_key(struct
> si_shader *shader,
> > key->ps_prolog.states.bc_optimize_for_linear);
> > key->ps_prolog.ancillary_vgpr_index =
> shader->info.ancillary_vgpr_index;
> >
> > if (info->colors_read) {
> > unsigned *color = shader->selector->color_attr_index;
> >
> > if (shader->key.part.ps.prolog.color_two_side) {
> > /* BCOLORs are stored after the last input. */
> > key->ps_prolog.num_interp_inputs =
> info->num_inputs;
> > key->ps_prolog.face_vgpr_index =
> shader->info.face_vgpr_index;
> > - shader->config.spi_ps_input_ena |=
> S_0286CC_FRONT_FACE_ENA(1);
> > + if (separate_prolog)
> > + shader->config.spi_ps_input_ena |=
> S_0286CC_FRONT_FACE_ENA(1);
> > }
> >
> > for (unsigned i = 0; i < 2; i++) {
> > unsigned interp =
> info->input_interpolate[color[i]];
> > unsigned location =
> info->input_interpolate_loc[color[i]];
> >
> > if (!(info->colors_read & (0xf << i*4)))
> > continue;
> >
> > key->ps_prolog.color_attr_index[i] = color[i];
> > @@ -6159,66 +6160,78 @@ static void si_get_ps_prolog_key(struct
> si_shader *shader,
> > case TGSI_INTERPOLATE_COLOR:
> > /* Force the interpolation location for
> colors here. */
> > if
> (shader->key.part.ps.prolog.force_persp_sample_interp)
> > location =
> TGSI_INTERPOLATE_LOC_SAMPLE;
> > if
> (shader->key.part.ps.prolog.force_persp_center_interp)
> > location =
> TGSI_INTERPOLATE_LOC_CENTER;
> >
> > switch (location) {
> > case TGSI_INTERPOLATE_LOC_SAMPLE:
> >
> key->ps_prolog.color_interp_vgpr_index[i] = 0;
> > - shader->config.spi_ps_input_ena
> |=
> > -
> S_0286CC_PERSP_SAMPLE_ENA(1);
> > + if (separate_prolog) {
> > +
> shader->config.spi_ps_input_ena |=
> > +
> S_0286CC_PERSP_SAMPLE_ENA(1);
> > + }
> > break;
> > case TGSI_INTERPOLATE_LOC_CENTER:
> >
> key->ps_prolog.color_interp_vgpr_index[i] = 2;
> > - shader->config.spi_ps_input_ena
> |=
> > -
> S_0286CC_PERSP_CENTER_ENA(1);
> > + if (separate_prolog) {
> > +
> shader->config.spi_ps_input_ena |=
> > +
> S_0286CC_PERSP_CENTER_ENA(1);
> > + }
> > break;
> > case TGSI_INTERPOLATE_LOC_CENTROID:
> >
> key->ps_prolog.color_interp_vgpr_index[i] = 4;
> > - shader->config.spi_ps_input_ena
> |=
> > -
> S_0286CC_PERSP_CENTROID_ENA(1);
> > + if (separate_prolog) {
> > +
> shader->config.spi_ps_input_ena |=
> > +
> S_0286CC_PERSP_CENTROID_ENA(1);
> > + }
> > break;
> > default:
> > assert(0);
> > }
> > break;
> > case TGSI_INTERPOLATE_LINEAR:
> > /* Force the interpolation location for
> colors here. */
> > if
> (shader->key.part.ps.prolog.force_linear_sample_interp)
> > location =
> TGSI_INTERPOLATE_LOC_SAMPLE;
> > if
> (shader->key.part.ps.prolog.force_linear_center_interp)
> > location =
> TGSI_INTERPOLATE_LOC_CENTER;
> >
> > /* The VGPR assignment for
> non-monolithic shaders
> > * works because InitialPSInputAddr is
> set on the
> > * main shader and PERSP_PULL_MODEL is
> never used.
> > */
> > switch (location) {
> > case TGSI_INTERPOLATE_LOC_SAMPLE:
> >
> key->ps_prolog.color_interp_vgpr_index[i] =
> > separate_prolog ? 6 : 9;
> > - shader->config.spi_ps_input_ena
> |=
> > -
> S_0286CC_LINEAR_SAMPLE_ENA(1);
> > + if (separate_prolog) {
> > +
> shader->config.spi_ps_input_ena |=
> > +
> S_0286CC_LINEAR_SAMPLE_ENA(1);
> > + }
> > break;
> > case TGSI_INTERPOLATE_LOC_CENTER:
> >
> key->ps_prolog.color_interp_vgpr_index[i] =
> > separate_prolog ? 8 : 11;
> > - shader->config.spi_ps_input_ena
> |=
> > -
> S_0286CC_LINEAR_CENTER_ENA(1);
> > + if (separate_prolog) {
> > +
> shader->config.spi_ps_input_ena |=
> > +
> S_0286CC_LINEAR_CENTER_ENA(1);
> > + }
> > break;
> > case TGSI_INTERPOLATE_LOC_CENTROID:
> >
> key->ps_prolog.color_interp_vgpr_index[i] =
> > separate_prolog ? 10 :
> 13;
> > - shader->config.spi_ps_input_ena
> |=
> > -
> S_0286CC_LINEAR_CENTROID_ENA(1);
> > + if (separate_prolog) {
> > +
> shader->config.spi_ps_input_ena |=
> > +
> S_0286CC_LINEAR_CENTROID_ENA(1);
> > + }
> > break;
> > default:
> > assert(0);
> > }
> > break;
> > default:
> > assert(0);
> > }
> > }
> > }
> > --
> > 2.17.1
> >
> > _______________________________________________
> > mesa-dev mailing list
> > mesa-dev@lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/mesa-dev
>
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