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[Test] (MG_Benchmark, MG_Util): model four more Minecraft frame patterns in the driver bench

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The captured traces contain per-frame patterns the bench did not exercise, and
first measurements show two of them are now the worst remaining multipliers -
which is exactly what the missing cases were hiding.

mc_pass_switch: the 26.2 snapshot switches render targets 132 times a frame and
re-declares draw buffers 198 times. Render-target churn is where a Vulkan
backend pays for render-pass breaks and where a tiler pays most on device, and
no case measured it. mc_state_toggle: Blaze3D brackets batches with blend
toggles - 46 enable/disable pairs and 28 blend-func changes per vanilla frame.
mc_tex_param: 26.2 re-sets texture parameters 612 times a frame, almost always
to the value already in place, so this measures redundant-parameter filtering.
mc_use_program: Sodium switches programs 62 times a frame with a mat4 upload on
each, roughly one switch per multi-draw.

All four live in the shared case file at the measured per-frame rates, so the
desktop harness, the on-device harness and the POST screen's Run Bench report
comparable numbers. First desktop measurements (ns/op, native / Espryt / Magma):
pass_switch 8877 / 18502 / 13896, state_toggle 1182 / 8526 / 8305,
tex_param 42 / 102 / 197, use_program 2182 / 10648 / 5096. The state-toggle
multiplier - 7x on both backends - is the largest newly exposed gap and the next
optimization target.

Unit tests 421/421; the Android JNI translation unit compiles against the
extended case set.
This commit is contained in:
BZLZHH
2026-08-06 09:39:02 -04:00
parent f2d210b12d
commit d524330032
3 changed files with 158 additions and 16 deletions
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MobileGL/MG_Util/SelfTest/DriverBenchJni.cpp
+4
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@@ -41,6 +41,7 @@
#include <MG_Impl/GLImpl/Getter/GL_Getter.h>
#include <MG_Impl/GLImpl/Program/GL_Program.h>
#include <MG_Impl/GLImpl/RenderState/GL_RenderState.h>
// Disable/BlendFuncSeparate live in GL_RenderState.h; DrawBuffers in GL_Framebuffer.h - both already included.
#include <MG_Impl/GLImpl/Sampler/GL_Sampler.h>
#include <MG_Impl/GLImpl/Sync/GL_Sync.h>
#include <MG_Impl/GLImpl/Texture/GL_Texture.h>
@@ -75,6 +76,9 @@
#define glDrawElements MobileGL::MG_Impl::GLImpl::DrawElements
#define glDrawElementsBaseVertex MobileGL::MG_Impl::GLImpl::DrawElementsBaseVertex
#define glEnable MobileGL::MG_Impl::GLImpl::Enable
#define glDisable MobileGL::MG_Impl::GLImpl::Disable
#define glBlendFuncSeparate MobileGL::MG_Impl::GLImpl::BlendFuncSeparate
#define glDrawBuffers MobileGL::MG_Impl::GLImpl::DrawBuffers
#define glEnableVertexAttribArray MobileGL::MG_Impl::GLImpl::EnableVertexAttribArray
#define glFenceSync MobileGL::MG_Impl::GLImpl::FenceSync
#define glFramebufferRenderbuffer MobileGL::MG_Impl::GLImpl::FramebufferRenderbuffer