For example, if a pipeline has two stages VS and FS. And if only
the fragment stage needs dynamic bindings, we shouldn't allocate
an extra user SGPR for the vertex stage. Of course, if the vertex
stage loads constants, it needs an user SGPR.
This should reduce the number of SET_SH_REG packets that are emitted.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
In the Intel backend, it makes the most sense to treat gl_TessLevelInner
and gl_TessLevelOuter as ordinary shader inputs. For Radeon, it makes
more sense to treat them as system values which get special handling.
We already have a compiler option for this, but the Iris driver will
need a capability bit so we can set it appropriately.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
We may have to flush the cache if there are any textures presently bound
that refer to the outgoing framebuffer. This is only checked at
validation time.
Fixes a number of dEQP-GLES3.functional.fbo.color.repeated_clear.sample.*
tests, which would bind a texture, then clear it while the binding was
in effect, and then render to a different texture. This seems legal
under the "no feedback loops" rule.
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Karol Herbst <kherbst@redhat.com>
Normally modifiers take precendence over use flags, as they are more
explicit. But if the driver supports modifiers, but the xserver does
not, then we should fallback to the old mechanism of allocating a buffer
using 'use' flags.
Fixes: 069fdd5f9f
Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Kristian H. Kristensen <hoegsberg@chromium.org>
Fixes a static assertion which broke the build.
Fixes: 3ee240890 "gallium: add SINT formats to have exact counterparts to SNORM formats"
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Neha Bhende<bhenden@vmware.com>
Annoyingly, this requires that we implement integer division on the
command streamer. Fortunately, we're only ever dividing by constants so
we can use the mulh+add+shift trick and it's not as bad as it sounds.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
In order to allow nir_gather_xfb_info to be used on OpenGL,
specifically ARB_gl_spirv.
So, from OpenGL 4.6 spec, section 11.1.2.1, "Output Variables":
"outputs specifying both an *XfbBuffer* and an *Offset* are
captured, while outputs not specifying both of these are not
captured. Values are captured each time the shader writes to such
a decorated object."
This implies that are captured if both are present, and not if one of
those are lacking. Technically, it doesn't explicitly point that
having just one or the other is a mistake. In some cases, glslang is
adding some extra XfbBuffer without XfbOffset around, and mentioning
that technically that is not a bug (see issue#1526)
And for the case of Vulkan, as the same glslang issue mentions, it is
not clear if that should be a mistake or not. But even if it is a
mistake, it is not really needed to be checked on the driver, and we
can let the validation layers to check that.
v2: simplify explicit_xfb_buffer and explicit_offset checks (Jason).
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Before, we were double-counting the component slots when we had a dvec3
or dvec4. Instead, just add them in once and manually offset the
recorded output offset.
Fixes: 19064b8c "nir: Add a pass for gathering transform feedback info"
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
If we have a transform feedback output like:
float[2] x2_out (VARYING_SLOT_VAR1.x, 0, 0)
which is lowered by nir_lower_io_arrays_to_elements to,
float x2_out (VARYING_SLOT_VAR1.x, 0, 0)
float x2_out@5 (VARYING_SLOT_VAR2.x, 0, 0)
We have to update the destination offset to avoid overwriting
the same value.
v2 (Jason Ekstrand):
- Compute the correct offsets for arrays of vectors and/or doubles
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
When a xfb buffer is explicitely declared on a varying
variable, we shouldn't remove it at link time.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
