These provide the iovas for system memory buffers used for
tessellation as well as a new HW specific system value.
Signed-off-by: Kristian H. Kristensen <hoegsberg@google.com>
Acked-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Rob Clark <robdclark@gmail.com>
This introduces two new lowering passes. One to lower VS to explicit
outputs using STLW and one to lower GS to load input using LDLW and
implement the GS specific functionality.
Signed-off-by: Kristian H. Kristensen <hoegsberg@google.com>
This is nice to have with radeonsi, where color varyings are handled
specially to avoid recompiles.
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Used internally in freedreno/ir3 for the vec2 value that hw passes to
shader to use as coordinate for bary.f (varying fetch) instruction.
This is not the same as SYSTEM_VALUE_FRAG_COORD.
Signed-off-by: Rob Clark <robdclark@gmail.com>
also reorder to match the gl_system_value enum.
It is weird that the STATIC_ASSERT doesn't trigger though.
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Karol Herbst <kherbst@redhat.com>
This VS system value contains if the draw command used to start the
rendering was an indexed draw command or a non-indexed one
(~0/0 respectively). Useful to calculate the gl_BaseVertex as:
(SYSTEM_VALUE_IS_INDEXED_DRAW & SYSTEM_VALUE_FIRST_VERTEX).
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This VS system value will contain the value passed as <basevertex> for
indexed draw calls or the value passed as <first> for non-indexed draw
calls. It can be used to calculate the gl_VertexID as
SYSTEM_VALUE_VERTEX_ID_ZERO_BASE plus SYSTEM_VALUE_FIRST_VERTEX.
From the OpenGL 4.6 spec, 10.4 "Drawing Commands Using Vertex Arrays":
- Page 352:
"The index of any element transferred to the GL by DrawArraysOneInstance
is referred to as its vertex ID, and may be read by a vertex shader as
gl_VertexID. The vertex ID of the ith element transferred is first +
i."
- Page 355:
"The index of any element transferred to the GL by
DrawElementsOneInstance is referred to as its vertex ID, and may be read
by a vertex shader as gl_VertexID. The vertex ID of the ith element
transferred is the sum of basevertex and the value stored in the
currently bound element array buffer at offset indices + i."
Currently the gl_VertexID calculation uses SYSTEM_VALUE_BASE_VERTEX but
this will have to change when the value of gl_BaseVertex is
fixed. Currently its value is broken for non-indexed draw calls because
it must be zero but we are setting it to <first>.
v2: use SYSTEM_VALUE_FIRST_VERTEX as name for the value, instead of
SYSTEM_VALUE_BASE_VERTEX_ID (Kenneth).
v3 (idr): Rebase on Rob Clark converting nir_intrinsics.h to be
generated. Reformat commit message to 72 columns.
Reviewed-by: Neil Roberts <nroberts@igalia.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
We don't support ARB_vertex_blend.
Note that the attribute aliasing check for ARB_vertex_program had to be
rewritten.
vbo_context: 20344 -> 20008 bytes
gl_context: 74672 -> 74616 bytes
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Likewise, rename the enum type to glsl_interp_mode.
Beyond the GLSL front-end, talking about "interpolation modes" seems
more natural than "interpolation qualifiers" - in the IR, we're removed
from how exactly the source language specifies how to interpolate an
input. Also, SPIR-V calls these "decorations" rather than "qualifiers".
Generated by:
$ find . -regextype egrep -regex '.*\.(c|cpp|h)' -type f -exec sed -i \
-e 's/INTERP_QUALIFIER_/INTERP_MODE_/g' \
-e 's/glsl_interp_qualifier/glsl_interp_mode/g' {} \;
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Acked-by: Dave Airlie <airlied@redhat.com>
These weren't added before because they are actually calculated values that
are computed from other inputs. However, in order to handle them in
nir_lower_system_values, it's nice for them to have a cannonical locaiton.
Reviewed-by: Rob Clark <robdclark@gmail.com>
In Vulkan, you have InstanceIndex which begins at the base instance value
rather than the zero-based InstanceID of GL.
Reviewed-by: Rob Clark <robdclark@gmail.com>
