82 lines
7.2 KiB
Diff
82 lines
7.2 KiB
Diff
From 5fc0b580cecb1529659d5d3719412fb7cbffac0d Mon Sep 17 00:00:00 2001
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From: Dave Airlie <airlied@redhat.com>
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Date: Mon, 29 Jun 2020 13:26:56 +1000
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Subject: [PATCH] glsl: fix constant packing for 64-bit big endian.
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In a piglit run on s390 a lot of double tests fail, explicitly
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packing/shifting things rather than using memcpy seems to help
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---
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src/compiler/glsl/ir_constant_expression.cpp | 15 +++++++++++++++
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src/compiler/glsl/ir_expression_operation.py | 20 ++++++++++----------
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2 files changed, 25 insertions(+), 10 deletions(-)
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diff --git a/src/compiler/glsl/ir_constant_expression.cpp b/src/compiler/glsl/ir_constant_expression.cpp
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index 636196886b3..595cc821797 100644
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--- a/src/compiler/glsl/ir_constant_expression.cpp
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+++ b/src/compiler/glsl/ir_constant_expression.cpp
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@@ -452,6 +452,21 @@ isub64_saturate(int64_t a, int64_t b)
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return a - b;
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}
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+static uint64_t
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+pack_2x32(uint32_t a, uint32_t b)
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+{
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+ uint64_t v = a;
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+ v |= (uint64_t)b << 32;
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+ return v;
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+}
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+
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+static void
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+unpack_2x32(uint64_t p, uint32_t *a, uint32_t *b)
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+{
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+ *a = p & 0xffffffff;
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+ *b = (p >> 32);
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+}
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+
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/**
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* Get the constant that is ultimately referenced by an r-value, in a constant
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* expression evaluation context.
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diff --git a/src/compiler/glsl/ir_expression_operation.py b/src/compiler/glsl/ir_expression_operation.py
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index d2c4d41024f..1c4e6b358e1 100644
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--- a/src/compiler/glsl/ir_expression_operation.py
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+++ b/src/compiler/glsl/ir_expression_operation.py
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@@ -560,14 +560,14 @@ ir_expression_operation = [
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operation("saturate", 1, printable_name="sat", source_types=(float_type,), c_expression="CLAMP({src0}, 0.0f, 1.0f)"),
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# Double packing, part of ARB_gpu_shader_fp64.
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- operation("pack_double_2x32", 1, printable_name="packDouble2x32", source_types=(uint_type,), dest_type=double_type, c_expression="memcpy(&data.d[0], &op[0]->value.u[0], sizeof(double))", flags=frozenset((horizontal_operation, non_assign_operation))),
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- operation("unpack_double_2x32", 1, printable_name="unpackDouble2x32", source_types=(double_type,), dest_type=uint_type, c_expression="memcpy(&data.u[0], &op[0]->value.d[0], sizeof(double))", flags=frozenset((horizontal_operation, non_assign_operation))),
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+ operation("pack_double_2x32", 1, printable_name="packDouble2x32", source_types=(uint_type,), dest_type=double_type, c_expression="data.u64[0] = pack_2x32(op[0]->value.u[0], op[0]->value.u[1])", flags=frozenset((horizontal_operation, non_assign_operation))),
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+ operation("unpack_double_2x32", 1, printable_name="unpackDouble2x32", source_types=(double_type,), dest_type=uint_type, c_expression="unpack_2x32(op[0]->value.u64[0], &data.u[0], &data.u[1])", flags=frozenset((horizontal_operation, non_assign_operation))),
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# Sampler/Image packing, part of ARB_bindless_texture.
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- operation("pack_sampler_2x32", 1, printable_name="packSampler2x32", source_types=(uint_type,), dest_type=uint64_type, c_expression="memcpy(&data.u64[0], &op[0]->value.u[0], sizeof(uint64_t))", flags=frozenset((horizontal_operation, non_assign_operation))),
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- operation("pack_image_2x32", 1, printable_name="packImage2x32", source_types=(uint_type,), dest_type=uint64_type, c_expression="memcpy(&data.u64[0], &op[0]->value.u[0], sizeof(uint64_t))", flags=frozenset((horizontal_operation, non_assign_operation))),
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- operation("unpack_sampler_2x32", 1, printable_name="unpackSampler2x32", source_types=(uint64_type,), dest_type=uint_type, c_expression="memcpy(&data.u[0], &op[0]->value.u64[0], sizeof(uint64_t))", flags=frozenset((horizontal_operation, non_assign_operation))),
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- operation("unpack_image_2x32", 1, printable_name="unpackImage2x32", source_types=(uint64_type,), dest_type=uint_type, c_expression="memcpy(&data.u[0], &op[0]->value.u64[0], sizeof(uint64_t))", flags=frozenset((horizontal_operation, non_assign_operation))),
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+ operation("pack_sampler_2x32", 1, printable_name="packSampler2x32", source_types=(uint_type,), dest_type=uint64_type, c_expression="data.u64[0] = pack_2x32(op[0]->value.u[0], op[0]->value.u[1])", flags=frozenset((horizontal_operation, non_assign_operation))),
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+ operation("pack_image_2x32", 1, printable_name="packImage2x32", source_types=(uint_type,), dest_type=uint64_type, c_expression="data.u64[0] = pack_2x32(op[0]->value.u[0], op[0]->value.u[1])", flags=frozenset((horizontal_operation, non_assign_operation))),
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+ operation("unpack_sampler_2x32", 1, printable_name="unpackSampler2x32", source_types=(uint64_type,), dest_type=uint_type, c_expression="unpack_2x32(op[0]->value.u64[0], &data.u[0], &data.u[1])", flags=frozenset((horizontal_operation, non_assign_operation))),
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+ operation("unpack_image_2x32", 1, printable_name="unpackImage2x32", source_types=(uint64_type,), dest_type=uint_type, c_expression="unpack_2x32(op[0]->value.u64[0], &data.u[0], &data.u[1])", flags=frozenset((horizontal_operation, non_assign_operation))),
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operation("frexp_sig", 1),
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operation("frexp_exp", 1),
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@@ -592,10 +592,10 @@ ir_expression_operation = [
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operation("ssbo_unsized_array_length", 1),
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# 64-bit integer packing ops.
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- operation("pack_int_2x32", 1, printable_name="packInt2x32", source_types=(int_type,), dest_type=int64_type, c_expression="memcpy(&data.i64[0], &op[0]->value.i[0], sizeof(int64_t))", flags=frozenset((horizontal_operation, non_assign_operation))),
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- operation("pack_uint_2x32", 1, printable_name="packUint2x32", source_types=(uint_type,), dest_type=uint64_type, c_expression="memcpy(&data.u64[0], &op[0]->value.u[0], sizeof(uint64_t))", flags=frozenset((horizontal_operation, non_assign_operation))),
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- operation("unpack_int_2x32", 1, printable_name="unpackInt2x32", source_types=(int64_type,), dest_type=int_type, c_expression="memcpy(&data.i[0], &op[0]->value.i64[0], sizeof(int64_t))", flags=frozenset((horizontal_operation, non_assign_operation))),
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- operation("unpack_uint_2x32", 1, printable_name="unpackUint2x32", source_types=(uint64_type,), dest_type=uint_type, c_expression="memcpy(&data.u[0], &op[0]->value.u64[0], sizeof(uint64_t))", flags=frozenset((horizontal_operation, non_assign_operation))),
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+ operation("pack_int_2x32", 1, printable_name="packInt2x32", source_types=(int_type,), dest_type=int64_type, c_expression="data.u64[0] = pack_2x32(op[0]->value.u[0], op[0]->value.u[1])", flags=frozenset((horizontal_operation, non_assign_operation))),
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+ operation("pack_uint_2x32", 1, printable_name="packUint2x32", source_types=(uint_type,), dest_type=uint64_type, c_expression="data.u64[0] = pack_2x32(op[0]->value.u[0], op[0]->value.u[1])", flags=frozenset((horizontal_operation, non_assign_operation))),
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+ operation("unpack_int_2x32", 1, printable_name="unpackInt2x32", source_types=(int64_type,), dest_type=int_type, c_expression="unpack_2x32(op[0]->value.u64[0], &data.u[0], &data.u[1])", flags=frozenset((horizontal_operation, non_assign_operation))),
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+ operation("unpack_uint_2x32", 1, printable_name="unpackUint2x32", source_types=(uint64_type,), dest_type=uint_type, c_expression="unpack_2x32(op[0]->value.u64[0], &data.u[0], &data.u[1])", flags=frozenset((horizontal_operation, non_assign_operation))),
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operation("add", 2, printable_name="+", source_types=numeric_types, c_expression="{src0} + {src1}", flags=vector_scalar_operation),
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operation("sub", 2, printable_name="-", source_types=numeric_types, c_expression="{src0} - {src1}", flags=vector_scalar_operation),
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--
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2.26.2
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