mirror of
https://github.com/MobileGL-Dev/MobileGL
synced 2026-11-07 01:53:24 +09:00
MOBILEGL_FRAMES_IN_FLIGHT drives both backends and derives the split present credit (default 3 keeps credit 1; the Magma name stays as an alias).
This commit is contained in:
@@ -46,7 +46,7 @@ require 'DirectVulkan' "$plugin_resource_text" 'V2 DirectVulkan option'
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require 'key:MOBILEGL_DISABLE_TIMERQUERY' "$plugin_resource_text" 'V2 timer-query toggle'
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require 'key:MOBILEGL_MAGMA_DISABLE_SUBGROUP' "$plugin_resource_text" 'V2 Vulkan subgroup toggle'
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require 'key:MOBILEGL_MAGMA_R11G11B10F_FALLBACK' "$plugin_resource_text" 'V2 Magma format fallback toggle'
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require 'key:MOBILEGL_MAGMA_FRAMESINFLIGHT' "$plugin_resource_text" 'V2 Magma frames-in-flight setting'
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require 'key:MOBILEGL_FRAMES_IN_FLIGHT' "$plugin_resource_text" 'V2 frames-in-flight setting'
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require 'key:MOBILEGL_ESPRYT_AVOID_SAMPLER_MIPMAP_MIN_FILTER' "$plugin_resource_text" 'V2 sampler workaround toggle'
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require 'key:MOBILEGL_COHERENT_AS_FLUSH' "$plugin_resource_text" 'V2 coherent-as-flush toggle'
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require 'key:MOBILEGL_ESPRYT_USE_ANGLE' "$plugin_resource_text" 'V2 ANGLE toggle'
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+17
-9
@@ -163,8 +163,15 @@ namespace MobileGL::MG_Config {
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// draws refused by name), because a driver that accepts invalid SPIR-V may fault the GPU
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// into device loss. For diagnosing a driver that copes with a specific module only.
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Bool MagmaAllowInvalidSpirv = false;
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// MOBILEGL_MAGMA_FRAMESINFLIGHT: requested Magma frames in flight, defaulting to 3.
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Uint32 MagmaFramesInFlight = 3;
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// MOBILEGL_FRAMES_IN_FLIGHT (P15; MOBILEGL_MAGMA_FRAMESINFLIGHT is its deprecated alias):
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// how many frames may be queued ahead of the GPU, default 3, both backends.
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// - Magma: its frame contexts (frame S+1 reuses S+1-N's), clamped to the surface.
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// - Espryt: after presenting S the backend waits for S+1-N to complete (N = 1 is a full
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// CPU/GPU sync; N >= 2 is what Android's own queueBuffer throttle already gives).
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// - inproc / spawn / TCP: the present credit, how many presents the GL thread may run
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// ahead of the server, is derived from it: max(1, N - 2), so the default 3 keeps the
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// shipped credit of 1 and N = 4 is credit 2 (one more frame of latency).
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Uint32 FramesInFlight = 3;
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// MOBILEGL_MAGMA_MAX_DRAWS_PER_COMMAND_BUFFER: GL draws and dispatches Magma records into
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// one command buffer before it submits it and continues on a fresh one. 0 = unbounded.
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// Drivers back a command buffer with GPU memory that is only returned when the buffer is
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@@ -700,13 +707,14 @@ namespace MobileGL::MG_Config {
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// client-filled gPipeInputs block for every verb, and run-ahead is precisely the
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// arm that stops filling it.
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Uint32 RunAhead = 1;
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// MOBILEGL_IPC_PRESENT_CREDIT (P5e, ruling 4 / ID-92): how many presents the client may
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// have in flight before it waits for a swap to come back. 1 = the client publishes
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// frame N+1's records while the server applies and swaps frame N - one frame of
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// overlap, at most one frame of added latency - and the CREDIT, never the ring's bytes,
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// is what paces a run-ahead client. 2 is a device MEASUREMENT arm: it buys no CPU on a
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// client that is already CPU-bound and costs a frame of latency, which is why the
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// default is 1 and not "as deep as the ring".
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// The present credit (P5e, ruling 4 / ID-92): how many presents the client may have in
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// flight before it waits for a swap to come back. 1 = the client publishes frame N+1's
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// records while the server applies and swaps frame N - one frame of overlap, at most one
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// frame of added latency - and the CREDIT, never the ring's bytes, is what paces a
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// run-ahead client. Derived from MOBILEGL_FRAMES_IN_FLIGHT (max(1, N - 2)); the
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// MOBILEGL_IPC_PRESENT_CREDIT override stays for experiments. Credit 2 is a real trade,
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// not a measurement arm: on FCL inproc (cpuhunt, 2026-10-08) it brought Magma 309 -> 320
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// and Espryt 299 -> 319 fps, at one frame of added latency.
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Uint32 PresentCredit = 1;
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// MOBILEGL_IPC_WAIT_STATS (P15, diagnostic): every 600 presents, log how many times per
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// frame the run-ahead client waited, by record op (applied/reply), by quiesce reason and
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@@ -377,7 +377,14 @@ namespace MobileGL::MG_ConfigLoader {
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features.AdvertiseFp64 = QueryEnvFlag("MOBILEGL_ADVERTISE_FP64");
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features.MagmaR11G11B10FFallback = QueryEnvFlag("MOBILEGL_MAGMA_R11G11B10F_FALLBACK");
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features.MagmaAllowInvalidSpirv = QueryEnvFlag("MOBILEGL_MAGMA_ALLOW_INVALID_SPIRV");
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features.MagmaFramesInFlight = QueryEnvUint32("MOBILEGL_MAGMA_FRAMESINFLIGHT", 3, 1, 64);
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// P15: one backend-neutral knob; the Magma-only spelling stays as a deprecated alias.
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if (acceptedEnvVariablesMap->count("MOBILEGL_FRAMES_IN_FLIGHT") != 0) {
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features.FramesInFlight = QueryEnvUint32("MOBILEGL_FRAMES_IN_FLIGHT", 3, 1, 64);
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} else {
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features.FramesInFlight = QueryEnvUint32("MOBILEGL_MAGMA_FRAMESINFLIGHT", 3, 1, 64);
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if (acceptedEnvVariablesMap->count("MOBILEGL_MAGMA_FRAMESINFLIGHT") != 0)
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MGLOG_W("Config: MOBILEGL_MAGMA_FRAMESINFLIGHT is deprecated; use MOBILEGL_FRAMES_IN_FLIGHT");
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}
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features.MagmaMaxDrawsPerCommandBuffer =
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QueryEnvUint32("MOBILEGL_MAGMA_MAX_DRAWS_PER_COMMAND_BUFFER", 16384, 0, 1u << 24);
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features.MagmaDescriptorTrimFrames = QueryEnvUint32("MOBILEGL_MAGMA_DESCRIPTOR_TRIM_FRAMES", 120, 0, 1u << 20);
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@@ -611,7 +618,14 @@ namespace MobileGL::MG_ConfigLoader {
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// The present credit (ruling 4). 1 is one frame of overlap; 8 is the ceiling because a
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// deeper queue buys nothing on a CPU-bound client and pays for it in latency. 0 is NOT
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// admitted: a credit of zero would mean "publish no present at all".
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ipc.PresentCredit = QueryEnvUint32("MOBILEGL_IPC_PRESENT_CREDIT", 1, 1, 8);
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// P15: derived from MOBILEGL_FRAMES_IN_FLIGHT (Config.h states the mapping); the explicit
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// knob stays as an override for experiments.
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{
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const Uint32 derived = std::max<Uint32>(1u, std::min<Uint32>(8u, MG_Config::Features.FramesInFlight > 2
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? MG_Config::Features.FramesInFlight - 2
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: 1u));
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ipc.PresentCredit = QueryEnvUint32("MOBILEGL_IPC_PRESENT_CREDIT", derived, 1, 8);
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}
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// CONTRACT-P6 D5b's reply bound and P7's cold-start budget (Config.h has the semantics).
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// Both are floored at 100 ms: a zero bound would declare every live server silent.
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ipc.ControlTimeoutMs = QueryEnvUint32("MOBILEGL_IPC_CONTROL_TIMEOUT_MS", 5000, 100, 600000);
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@@ -13713,8 +13713,10 @@ namespace MobileGL::MG_Backend::DirectGLES {
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// makes it reachable), then non-blocking-poll prior frames' fences AFTER to
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// advance the completed-frame watermark that gates buffer-pool recycling.
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const Bool canFence = IsBackendContextCurrentOnThisThread() && g_GLESFuncs.glFenceSync;
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Uint64 presentedSerial = 0;
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if (canFence) {
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const Uint64 serial = g_currentFrameSerial.fetch_add(1, std::memory_order_relaxed) + 1;
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presentedSerial = serial;
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FrameFence& slot = g_frameFenceRing[serial % kFrameFenceRingDepth];
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if (slot.sync && slot.contextGeneration == g_syncContextGeneration) {
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// The slot's fence is a ring-depth of serials old and may be another context's:
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@@ -13772,6 +13774,23 @@ namespace MobileGL::MG_Backend::DirectGLES {
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// A frame boundary: the next frame's age is asked anew.
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t_ageAskedSurface = EGL_NO_SURFACE;
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// P15: MOBILEGL_FRAMES_IN_FLIGHT, Espryt's half. Magma bounds the frames the GPU has
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// queued with its frame contexts (frame S+1 reuses the context of frame S+1-N); this is
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// the same bound on the ES driver: after presenting S, wait for S+1-N to complete. The
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// platform's own queueBuffer throttle already waits for S-1, so only N = 1 is stricter
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// than what Android does by itself; larger N is the same contract stated, not a change.
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const Uint32 framesInFlight = MG_Config::Features.FramesInFlight;
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if (presentedSerial != 0 && framesInFlight != 0 &&
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framesInFlight < static_cast<Uint32>(kFrameFenceRingDepth) && g_GLESFuncs.glClientWaitSync &&
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presentedSerial + 1 > framesInFlight) {
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const Uint64 target = presentedSerial + 1 - framesInFlight;
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const FrameFence& oldest = g_frameFenceRing[target % kFrameFenceRingDepth];
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if (oldest.sync && oldest.serial == target && oldest.contextGeneration == g_syncContextGeneration) {
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constexpr Uint64 kFramesInFlightWaitNs = 1000ull * 1000 * 1000;
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(void)g_GLESFuncs.glClientWaitSync(oldest.sync, GL_SYNC_FLUSH_COMMANDS_BIT, kFramesInFlightWaitNs);
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}
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}
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if (canFence) PollFrameFences();
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// After the watermark advanced: retire grown-away ring stores and record the
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@@ -2156,7 +2156,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
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{
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// Desired depth comes from MOBILEGL_MAGMA_FRAMESINFLIGHT, parsed once by ConfigLoader
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// with a default of 3 when the variable is unset or invalid.
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Uint32 requestedFramesInFlight = MG_Config::Features.MagmaFramesInFlight;
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Uint32 requestedFramesInFlight = MG_Config::Features.FramesInFlight;
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MGLOG_I("MaxFramesInFlight: configured request=%u", requestedFramesInFlight);
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VkSurfaceCapabilitiesKHR surfaceCaps{};
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@@ -36,6 +36,7 @@ namespace {
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"MOBILEGL_CONFIG_FILE", "MOBILEGL_BACKEND_FILE", "MOBILEGL_BACKEND_TYPE",
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"MOBILEGL_MAGMA_FRAMESINFLIGHT", "MOBILEGL_TRANSPORT", "MOBILEGL_IPC_CONTROL",
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"MOBILEGL_IPC_DATA", "MOBILEGL_IPC_ROLE", "MOBILEGL_TEST_ONLY_KEY",
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"MOBILEGL_FRAMES_IN_FLIGHT", "MOBILEGL_IPC_PRESENT_CREDIT",
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};
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class ConfigFileTest : public ::testing::Test {
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@@ -84,7 +85,7 @@ namespace {
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TEST_F(ConfigFileTest, WithoutFilesOrEnvironmentTheBuiltInDefaultsHold) {
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Loader::Init();
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EXPECT_EQ(Config::ActiveBackendType, BackendType::DirectGLES);
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EXPECT_EQ(Config::Features.MagmaFramesInFlight, 3u);
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EXPECT_EQ(Config::Features.FramesInFlight, 3u);
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EXPECT_EQ(Lookup("MOBILEGL_TRANSPORT"), "<unset>");
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#if MOBILEGL_BUILD_DISAGGREGATED
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EXPECT_EQ(Config::Transport, Config::TransportMode::Monolith);
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@@ -92,6 +93,30 @@ namespace {
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#endif
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}
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// P15: one frames-in-flight knob for both backends, the Magma spelling as its alias, and the
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// split arms' present credit derived from it (max(1, N - 2), so the default keeps credit 1).
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TEST_F(ConfigFileTest, FramesInFlightIsBackendNeutralAndDerivesThePresentCredit) {
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Loader::Init();
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EXPECT_EQ(Config::Features.FramesInFlight, 3u);
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#if MOBILEGL_BUILD_DISAGGREGATED
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EXPECT_EQ(Config::Ipc.PresentCredit, 1u);
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#endif
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::setenv("MOBILEGL_FRAMES_IN_FLIGHT", "4", 1);
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::setenv("MOBILEGL_MAGMA_FRAMESINFLIGHT", "6", 1); // the new name wins over the alias
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Loader::Init();
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EXPECT_EQ(Config::Features.FramesInFlight, 4u);
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#if MOBILEGL_BUILD_DISAGGREGATED
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EXPECT_EQ(Config::Ipc.PresentCredit, 2u);
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::setenv("MOBILEGL_IPC_PRESENT_CREDIT", "1", 1); // the explicit override stays
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Loader::Init();
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EXPECT_EQ(Config::Ipc.PresentCredit, 1u);
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::unsetenv("MOBILEGL_IPC_PRESENT_CREDIT");
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#endif
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::unsetenv("MOBILEGL_FRAMES_IN_FLIGHT");
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Loader::Init();
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EXPECT_EQ(Config::Features.FramesInFlight, 6u); // the alias alone still works
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}
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TEST_F(ConfigFileTest, TheFileFillsWhatTheEnvironmentLeavesUnset) {
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Write(conf_, "# a comment\n"
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"\n"
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@@ -103,7 +128,7 @@ namespace {
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"garbage line without equals\n"
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"MOBILEGL_TEST_ONLY_KEY=a=b\n");
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Loader::Init();
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EXPECT_EQ(Config::Features.MagmaFramesInFlight, 5u);
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EXPECT_EQ(Config::Features.FramesInFlight, 5u);
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EXPECT_EQ(Lookup("MOBILEGL_TRANSPORT"), "spawn");
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EXPECT_EQ(Lookup("MOBILEGL_IPC_CONTROL"), "unix:@test-endpoint");
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EXPECT_EQ(Lookup("MOBILEGL_IPC_DATA"), "shm");
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@@ -121,7 +146,7 @@ namespace {
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::setenv("MOBILEGL_MAGMA_FRAMESINFLIGHT", "7", 1);
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::setenv("MOBILEGL_IPC_CONTROL", "unix:@from-env", 1);
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Loader::Init();
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EXPECT_EQ(Config::Features.MagmaFramesInFlight, 7u);
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EXPECT_EQ(Config::Features.FramesInFlight, 7u);
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EXPECT_EQ(Lookup("MOBILEGL_IPC_CONTROL"), "unix:@from-env");
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#if MOBILEGL_BUILD_DISAGGREGATED
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EXPECT_EQ(Config::Ipc.Control, "unix:@from-env");
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@@ -156,12 +181,12 @@ namespace {
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::setenv("MOBILEGL_CONFIG_FILE", "", 1);
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::setenv("MOBILEGL_BACKEND_FILE", "", 1);
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Loader::Init();
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EXPECT_EQ(Config::Features.MagmaFramesInFlight, 3u);
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EXPECT_EQ(Config::Features.FramesInFlight, 3u);
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EXPECT_EQ(Config::ActiveBackendType, BackendType::DirectGLES);
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::setenv("MOBILEGL_CONFIG_FILE", (dir_ / "absent.conf").string().c_str(), 1);
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Loader::Init();
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EXPECT_EQ(Config::Features.MagmaFramesInFlight, 3u);
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EXPECT_EQ(Config::Features.FramesInFlight, 3u);
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}
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TEST_F(ConfigFileTest, AServerProcessNeverReadsTheClientsFile) {
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@@ -169,7 +194,7 @@ namespace {
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Write(backend_, "DirectVulkan\n");
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::setenv("MOBILEGL_IPC_ROLE", "server", 1);
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Loader::Init();
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EXPECT_EQ(Config::Features.MagmaFramesInFlight, 3u);
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EXPECT_EQ(Config::Features.FramesInFlight, 3u);
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EXPECT_EQ(Config::ActiveBackendType, BackendType::DirectGLES);
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EXPECT_EQ(Lookup("MOBILEGL_MAGMA_FRAMESINFLIGHT"), "<unset>");
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}
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@@ -105,7 +105,7 @@ val pluginRendererConfig = buildJsonValue {
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toggleable("MOBILEGL_DISABLE_TIMERQUERY", "1", false, RendererConfig.MetaString("mobilegl_disable_timerquery_title"))
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toggleable("MOBILEGL_MAGMA_DISABLE_SUBGROUP", "1", false, RendererConfig.MetaString("mobilegl_disable_subgroup_title"))
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toggleable("MOBILEGL_MAGMA_R11G11B10F_FALLBACK", "1", false, RendererConfig.MetaString("mobilegl_magma_r11g11b10f_fallback_title"))
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customizable("MOBILEGL_MAGMA_FRAMESINFLIGHT", "3", RendererConfig.MetaString("mobilegl_magma_frames_inflight_title"))
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customizable("MOBILEGL_FRAMES_IN_FLIGHT", "3", RendererConfig.MetaString("mobilegl_frames_inflight_title"))
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toggleable("MOBILEGL_ESPRYT_AVOID_SAMPLER_MIPMAP_MIN_FILTER", "1", false, RendererConfig.MetaString("mobilegl_avoid_sampler_mipmap_min_filter_title"))
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toggleable("MOBILEGL_COHERENT_AS_FLUSH", "1", false, RendererConfig.MetaString("mobilegl_coherent_as_flush_title"))
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toggleable("MOBILEGL_RELAXED_SEMANTICS", "1", false, RendererConfig.MetaString("mobilegl_relaxed_semantics_title"))
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@@ -102,8 +102,8 @@
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android:name="mobilegl_magma_r11g11b10f_fallback_title"
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android:resource="@string/mobilegl_magma_r11g11b10f_fallback_title" />
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<meta-data
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android:name="mobilegl_magma_frames_inflight_title"
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android:resource="@string/mobilegl_magma_frames_inflight_title" />
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android:name="mobilegl_frames_inflight_title"
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android:resource="@string/mobilegl_frames_inflight_title" />
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<meta-data
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android:name="mobilegl_avoid_sampler_mipmap_min_filter_title"
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android:resource="@string/mobilegl_avoid_sampler_mipmap_min_filter_title" />
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@@ -5,7 +5,7 @@
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<string name="mobilegl_disable_timerquery_title">Disable GPU timer queries</string>
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<string name="mobilegl_disable_subgroup_title">Disable Vulkan shader subgroups</string>
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<string name="mobilegl_magma_r11g11b10f_fallback_title">Use Magma R11G11B10F fallback</string>
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<string name="mobilegl_magma_frames_inflight_title">Magma frames in flight (1-64)</string>
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<string name="mobilegl_frames_inflight_title">Frames in flight (1-64)</string>
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<string name="mobilegl_avoid_sampler_mipmap_min_filter_title">Avoid sampler mipmap minification filters</string>
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<string name="mobilegl_coherent_as_flush_title">Treat explicit-flush persistent maps as coherent</string>
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<string name="mobilegl_use_angle_title">Use ANGLE GLES libraries</string>
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@@ -25,7 +25,7 @@
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android:name="mobilegl_magma_r11g11b10f_fallback_title"
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tools:node="remove" />
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<meta-data
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android:name="mobilegl_magma_frames_inflight_title"
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android:name="mobilegl_frames_inflight_title"
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tools:node="remove" />
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<meta-data
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android:name="mobilegl_avoid_sampler_mipmap_min_filter_title"
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@@ -52,7 +52,8 @@ CMake：`MOBILEGL_BUILD_DISAGGREGATED`（OFF）、`MOBILEGL_BUILD_DISAGGREGATED_
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| `MOBILEGL_IPC_RING_MB` / `MOBILEGL_IPC_STAGE_MB` | 8 / 32 | `SEG_CMD` / `SEG_STAGE`；stage 的 1/4 是内容分块预算 |
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| `MOBILEGL_IPC_RUN_AHEAD` | 1 | P5e run-ahead；只是合取式的一半（server 须发布 `kCapRunAheadApply`）；`0` 是 A/B 对照 |
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| `MOBILEGL_IPC_VERB_BARRIER` | 1 | `0` 只作阴性对照，且同时关掉 run-ahead |
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| `MOBILEGL_IPC_PRESENT_CREDIT` | 1 | 1..8，§14 |
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| `MOBILEGL_FRAMES_IN_FLIGHT` | 3 | 1..64，两个后端共用（旧名 `MOBILEGL_MAGMA_FRAMESINFLIGHT` 为弃用别名）：Magma 的帧上下文数；Espryt 在 present S 后等待帧 S+1-N 完成；split 的 present credit 由它导出为 max(1, N-2)（P15） |
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| `MOBILEGL_IPC_PRESENT_CREDIT` | 由 `MOBILEGL_FRAMES_IN_FLIGHT` 导出（默认 1） | 1..8，§14；显式设置覆盖导出值，仅供实验 |
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| `MOBILEGL_IPC_POLL_ESCALATE` | 64 | 未报告 fence 的零超时轮询本地答"未完成"，同一 fence 连续第 N 次才往返（P10，`CONTRACT-P10.md` §1）；`0` = 每次轮询都往返，是 A/B 对照 |
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| `MOBILEGL_IPC_BATCH_WAITS` | 1 | lockstep 下值类记录发布即返回；verify 强制 0 |
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| `MOBILEGL_IPC_EVENT_WAIT_MS` | 2000 | 反向事件遇满环时 server 等 client 排空的整笔预算（§11.7） |
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Block a user