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  1. 24 Sep, 2019 7 commits
  3. 23 Sep, 2019 1 commit
  5. 20 Sep, 2019 7 commits
  7. 19 Sep, 2019 2 commits
  9. 18 Sep, 2019 3 commits
  11. 17 Sep, 2019 1 commit
  13. 16 Sep, 2019 6 commits
  15. 14 Sep, 2019 2 commits
    • Update Marl to bf3e23083 · e901e9b5
      Nicolas Capens authored 
      bf3e23083 pool.h: Don't over-qualify Loan type parameters
dc76e9653 CMake: Fix configuration file installation path
fca4771b4 Scheduler: Increase max number of threads from 64 to 256.
1b3fd77b2 debug: Add MARL_WARN for printing warnings
3928f44d6 [Grammar] Fix passive tense.
a2918916e CMake: Add install target (#21)
1ec7c36cf examples/primes.cpp: Add missing header including
ed21a07a1 Minor cleanup

Commands:
git subtree pull --prefix third_party/marl https://github.com/google/marl bf3e23083979c3bd3de1c77346b655eec423b3bc --squash

Bug: b/141003126
Change-Id: I5e9afad957d52919c48a60d8db49c04e43102870
    • Squashed 'third_party/marl/' changes from 59068ee4c..bf3e23083 · 73634a19
      Nicolas Capens authored 
      bf3e23083 pool.h: Don't over-qualify Loan type parameters
dc76e9653 CMake: Fix configuration file installation path
fca4771b4 Scheduler: Increase max number of threads from 64 to 256.
1b3fd77b2 debug: Add MARL_WARN for printing warnings
3928f44d6 [Grammar] Fix passive tense.
a2918916e CMake: Add install target (#21)
1ec7c36cf examples/primes.cpp: Add missing header including
ed21a07a1 Minor cleanup

git-subtree-dir: third_party/marl
git-subtree-split: bf3e23083979c3bd3de1c77346b655eec423b3bc
  17. 13 Sep, 2019 3 commits
  19. 12 Sep, 2019 6 commits
    • [memfd] Create support class for Linux memfd-backed region. · c9fa9fe9
      David 'Digit' Turner authored 
      This creates a new helper class to allocate memfd-backed shared
memory regions with the Linux kernel. The feature has been
supported since at least Linux 3.17, which is sufficient for
a large number of desktop Linux and Android devices.

However, only recent version of GLibc or the Android C library
expose memfd_create(), so keep implementing it as a direct syscall.

NOTE: There is a similar function named memfd_create() inside
      of src/Reactor/ExecutableMemory.cpp, but it is easier to
      keep them separate for now to avoid introducing subtle
      dependency issues in the CMakeLists.txt file.

This will used in future CLs that implement Vulkan external
semaphores and external memory on Linux and Android for SwiftShader.

Bug: b/140419396

Change-Id: I378c34760930d8fef7d0659128ededb5227c323f
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/35128Reviewed-by: 's avatarNicolas Capens <nicolascapens@google.com>
Tested-by: 's avatarDavid Turner <digit@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
    • Assert Reactor Float constants are finite · d94d6a3d
      Nicolas Capens authored 
      C++11 does not have a way to write an infinite or NaN literal, nor does
it allow division by zero as a constant expression. Thus we should not
accept inf or NaN as a Reactor Float constant, as this would typically
indicate a bug, and avoids undefined behavior.

This also prevents the issue of the LLVM JIT only taking double values
for constructing floating-point constants. During the conversion from
single-precision to double, a signaling NaN can become a quiet NaN, thus
altering its bit pattern. Hence this assert is also helpful for
detecting cases where integers are being reinterpreted as float and then
bitcast to integer again, which does not guarantee preserving the
integer value.

Should infinity and NaN constants be required, methods like infinity(),
quiet_NaN(), and signaling_NaN() should be added to the Float class.

For cases where binary float data must be preserved exactly, one can
construct a Reactor Int value and bitcast as Float.

Bug: b/140302841
Change-Id: I72cf7e6fe82913cffcb1e0de282bc6839f65226d
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/35868
Presubmit-Ready: Nicolas Capens <nicolascapens@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Tested-by: 's avatarNicolas Capens <nicolascapens@google.com>
Reviewed-by: 's avatarChris Forbes <chrisforbes@google.com>
    • Fix construction of SPIR-V constant float objects · baf328ab
      Nicolas Capens authored 
      Constructing a constant SIMD::Float is not guaranteed to preserve the
data's exact bit pattern, but SPIR-V provides 32-bit words representing
"the bit pattern for the constant". Thus we must first construct an
integer constant, and bitcast to float.

Bug: b/140302841
Change-Id: I1a84dab9d1adbdc15f8a3b2fc639c637d2841174
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/36208
Presubmit-Ready: Nicolas Capens <nicolascapens@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Tested-by: 's avatarNicolas Capens <nicolascapens@google.com>
Reviewed-by: 's avatarChris Forbes <chrisforbes@google.com>
    • Fix passing sampler offset operands unchanged · a070dcf0
      Nicolas Capens authored 
      All sampler operands are passed through an array of float values. Offset
operands are integers, but we were retrieving them from the SPIR-V
constant object interpreted as floating-point data, and then creating
Float constants from them. This may alter their bit pattern,
specifically values corresponding to sNaN may become qNaN.

Instead create Reactor integer constants and bitcast them to Float.

Bug: b/140302841
Change-Id: I06aceb7b2a97d5f5ce9009f5ba97238602cdc126
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/35910
Presubmit-Ready: Nicolas Capens <nicolascapens@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Tested-by: 's avatarNicolas Capens <nicolascapens@google.com>
Reviewed-by: 's avatarChris Forbes <chrisforbes@google.com>
    • Fix storing of non-float SPIR-V constants · dc550b2d
      Nicolas Capens authored 
      Reactor Float scalar and vector constants may not fully preserve the
bit pattern of the values they were constructed from. Specifically,
signaling NaN values (sNaN) may become quiet NaN values (qNaN). Thus
they should not be used for storing SPIR-V constant objects to memory.
Interpret the data as integer instead. Note Object::constantValue is
already a uint32_t array.

Bug: b/140302841
Change-Id: Ifd51eec9d2b7adab8fef5de74e2e30d080a28fd5
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/35909
Presubmit-Ready: Nicolas Capens <nicolascapens@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Tested-by: 's avatarNicolas Capens <nicolascapens@google.com>
Reviewed-by: 's avatarChris Forbes <chrisforbes@google.com>
    • Fix non-float constant creation for ASM · b1d3bbfc
      Nicolas Capens authored 
      Despite the name, PARAMETER_FLOAT4LITERAL is used for integer and
Boolean constants in the ASM representation of GLSL compiled shaders.
Reactor can turn sNaN values into qNan when constructing Float
constants, and thus integers bitcast from a float which were initialized
from a reinterpreted integer may not preserve its original bit pattern.

Instead construct the Float register values from Reactor Ints which are
bitcast to Float.

Bug: b/140302841
Change-Id: I4d915851c430dee4a752e06be0011c10d89fb79d
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/35888
Presubmit-Ready: Nicolas Capens <nicolascapens@google.com>
Tested-by: 's avatarNicolas Capens <nicolascapens@google.com>
Reviewed-by: 's avatarChris Forbes <chrisforbes@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
  21. 11 Sep, 2019 2 commits