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zink: fix pv mode lowring index calculation

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The provoking vertex mode pass was calculating an offset and then using
it directly instead of adding it to the base index.

Fixes: 5a4083349f ("zink: add provoking vertex mode lowering")
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22599>
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antonino 2023-04-04 12:20:37 +02:00 • committed by Marge Bot
parent aa45b13398
commit 436dacf754
1 changed files with 1 additions and 0 deletions
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src/gallium/drivers/zink/zink_compiler.c
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@ -470,6 +470,7 @@ lower_pv_mode_emit_rotated_prim(nir_builder *b,
else if (state->prim == ZINK_PVE_PRIMITIVE_FAN)
rotated_i = nir_imod(b, nir_iadd_imm(b, rotated_i, 2),
three);
rotated_i = nir_iadd(b, rotated_i, current_vertex);
nir_foreach_variable_with_modes(var, b->shader, nir_var_shader_out) {
gl_varying_slot location = var->data.location;
if (state->varyings[location]) {