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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 <[email protected]>
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Reviewed-by: Jason Ekstrand <[email protected]>
Signed-off-by: Karol Herbst <[email protected]>
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Reviewed-by: Jason Ekstrand <[email protected]>
Signed-off-by: Karol Herbst <[email protected]>
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also reorder to match the gl_system_value enum.
It is weird that the STATIC_ASSERT doesn't trigger though.
Reviewed-by: Jason Ekstrand <[email protected]>
Signed-off-by: Karol Herbst <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
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This will be required for SPIR-V subgroup support
Reviewed-by: Lionel Landwerlin <[email protected]>
Reviewed-by: Samuel Iglesias Gonsálvez <[email protected]>
Reviewed-by: Iago Toral Quiroga <[email protected]>
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Reviewed-by: Samuel Iglesias Gonsálvez <[email protected]>
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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 <[email protected]>
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Reviewed-by: Iago Toral Quiroga <[email protected]>
Reviewed-by: Bas Nieuwenhuizen <[email protected]>
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Reviewed-by: Marek Olšák <[email protected]>
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Signed-off-by: Lionel Landwerlin <[email protected]>
Reviewed-by: Bas Nieuwenhuizen <[email protected]>
Reviewed-by: Anuj Phogat <[email protected]>
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We need these for spir-v/nir shaders.
Reviewed-by: Edward O'Callaghan <[email protected]>
Reviewed-by: Jason Ekstrand <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
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Signed-off-by: Ilia Mirkin <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
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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 <[email protected]>
Acked-by: Dave Airlie <[email protected]>
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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 <[email protected]>
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In Vulkan, you have InstanceIndex which begins at the base instance value
rather than the zero-based InstanceID of GL.
Reviewed-by: Rob Clark <[email protected]>
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This way one can reuse it in glsl, nir or other infrastructure without
pulling nir as dependency.
Signed-off-by: Emil Velikov <[email protected]>
Acked-by: Matt Turner <[email protected]>
Acked-by: Jose Fonseca <[email protected]>
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