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Caching ASTC Parameters to Disk

Intro

Here's a negative result around compressing and caching ASTC parameters to reduce transfer overhead.

Taking an Adreno 650 as our reference:

1. GPU - 1.2 TFlops (1200 GFlops)
2. CPU SIMD int8 - 18 GFlops

leegao

[REQUIRED] depthBiasClamp / CORE10 (feature)
  FL=9.0 - Required for D3D9 and D3D11. Allows clamping the depth bias value.
   Qcom Turnip
    + unsupported (0/53): []
    +   supported (53/53): ['23.0-26.708 (52/52)']
   Qcom Proprietary
    + unsupported (0/163): []
    +   supported (163/163): ['512.502-512.826 (162/162)']
   Mali Proprietary
    + unsupported (0/67): []

leegao

CreateFramebuffer
  in: device: VkDevice (handle) = 0xb4000075a4e69010
  in: pCreateInfo: VkFramebufferCreateInfo*
    .flags: VkFramebufferCreateFlags = 0x0
    .renderPass: VkRenderPass (handle) = 0xb400007454e8d0d0
    .attachmentCount: uint32_t = 0x1
    .pAttachments[0]: VkImageView* = 0xb40000746501b800
    .width: uint32_t = 0x500
    .height: uint32_t = 0x2d0
    .layers: uint32_t = 0x1

leegao

From AI Studio analysis of https://github.com/google/angle/blob/6a04a50f98cac71b25464d10289ce7a013841caf/src/libANGLE/renderer/vulkan/vk_renderer.cpp#L4879

1. ARM / Mali

These workarounds apply to GPUs designed by ARM (Mali), found in chipsets like Samsung Exynos, Google Tensor, and MediaTek Dimensity.

Feature / Workaround	mFeatures Flag	Condition / Driver Version	Reason & Impact
Protected Memory Restriction	supportsProtectedMemory	Blocked if: isARM && !pipelineProtectedAccess	Bug: On older ARM platforms, enabling VK_KHR_protected_memory causes excessive, unnecessary load/store unit activity. Workaround: Only enabled on ARM if the newer VK_EXT_pipeline_protected_access extension is also present, indicating a fixed driver. (b/208458772)
Mixed Load Op Restriction	disallowMixedDepthStencilLoadOpNoneAndLoad	Enabled if: isARM && driverVersion < r38.1.0	Bug: ARM drivers older than r38p1 are bug

leegao

[REQUIRED] robustBufferAccess / CORE10 (feature)
  FL=9.1 - Always enabled if supported by Vulkan. Used for robustness and constant buffer range checks.
   ImgTec
    + unsupported (0/42): []
    +   supported (42/42): ['0.1017-139.3 (41/41)']
   Mali Proprietary
    + unsupported (0/66): []
    +   supported (66/66): ['25.1-50.0 (65/65)']
   Qcom Proprietary
    + unsupported (0/157): []

leegao

[
  {
    "name": "robustBufferAccess",
    "type": "feature",
    "extension": "CORE10",
    "required": true,
    "feature_level": "9.1",
    "notes": "Always enabled if supported by Vulkan. Used for robustness and constant buffer range checks.",
    "supported_driver_versions": {
      "Qcom Proprietary": [

leegao

diff --git a/app/build.gradle b/app/build.gradle
index f0f10e9..0abcde4 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -21,18 +21,18 @@ plugins {
 tasks.register("prepareKotlinBuildScriptModel"){}
 
 android {
-    namespace 'com.winlator'
+    namespace 'com.winlator.cmod'

leegao

#include <string.h>
#include <jni.h>
#include <vulkan/vulkan.h>
#include <dlfcn.h>
#include <android/log.h>
#include <stdio.h>
#include <__algorithm/find_if.h>
#include <assert.h>
#include <android/log.h>
#include <iostream>

leegao

add_library(${CMAKE_PROJECT_NAME} SHARED
    # List C/C++ source files with relative paths to this CMakeLists.txt.
    dummyvk.cpp)

# Specifies libraries CMake should link to your target library. You
# can link libraries from various origins, such as libraries defined in this
# build script, prebuilt third-party libraries, or Android system libraries.
target_link_libraries(${CMAKE_PROJECT_NAME}
    # List libraries link to the target library
    android

leegao

#!/bin/bash

PPID1=$(ps -o ppid= "$$" | tr -d ' ')
PPID2=$(ps -o ppid= "$PPID1" | tr -d ' ')
PARENT=$(ps -p "$PPID2" -o comm=)

if [ -z "$1" ]; then
  if [ "$PARENT" != "script" ] ; then
    export HISTORY_FILE=$(mktemp)
    echo "Run with history ($HISTORY_FILE), don't forget to ctrl+D"