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[Feat] (MG_Impl, MG_State, MG_Util): the GL_KHR_parallel_shader_compile surface (P1 stage 5)

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GL_COMPLETION_STATUS_KHR in both object getters, reading the non-joining
node-direct state - the one query that must never block is asserted never
to reach a join gate. glMaxShaderCompilerThreadsKHR/ARB share one
implementation: a zero count suspends async FIRST and then joins every
outstanding compile and link this context owns (suspend-before-join is the
only order whose post-condition is 'nothing in flight'), a nonzero count
restores; the suspension is a process latch the extension controls, kept
distinct from the configuration flag that gates the ADVERTISEMENT - an app
that turned threading off has not made the extension disappear.
GL_MAX_SHADER_COMPILER_THREADS_KHR reports the thread count. DriverPost
gains the MobileGL-side async row (PASS/INFO naming the env knob) and an
informational host-driver row backed by a new GLES capability probe.

The extension string itself lands per backend in the two follow-up
commits, keeping this one green stand-alone.
This commit is contained in:
BZLZHH
2026-08-08 13:17:58 -04:00
parent 6f8b7fbc40
commit bd0def6133
15 changed files with 265 additions and 10 deletions
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MobileGL/MG_Util/BackendLoaders/OpenGL/Loader.cpp
+5
View File
@@ -858,6 +858,9 @@ namespace MobileGL::MG_Util::BackendLoader {
if (std::strcmp(extension, "GL_EXT_disjoint_timer_query") == 0) {
caps.SupportsDisjointTimerQuery = true;
}
if (std::strcmp(extension, "GL_KHR_parallel_shader_compile") == 0) {
caps.SupportsParallelShaderCompile = true;
}
if (std::strcmp(extension, "GL_EXT_blend_func_extended") == 0) {
caps.SupportsDualSourceBlend = true;
}
@@ -1220,6 +1223,8 @@ namespace MobileGL::MG_Util::BackendLoader {
caps.IsAngleLlvmpipeRenderer && MG_Config::Features.AvoidSamplerMipmapMinFilter;
MGLOG_I(" GL_EXT_disjoint_timer_query supported: %s",
caps.SupportsDisjointTimerQuery ? "true" : "false");
MGLOG_I(" GL_KHR_parallel_shader_compile supported: %s",
caps.SupportsParallelShaderCompile ? "true" : "false");
MGLOG_I(" ANGLE renderer: %s", caps.IsAngleRenderer ? "true" : "false");
MGLOG_I(" ANGLE llvmpipe renderer: %s", caps.IsAngleLlvmpipeRenderer ? "true" : "false");
MGLOG_I(" Avoid sampler mipmap min filter: %s",
MobileGL/MG_Util/BackendLoaders/OpenGL/Loader.h
+10
View File
@@ -1053,6 +1053,16 @@ namespace MobileGL {
Bool SupportsBaseInstance = false;
// GL_EXT_disjoint_timer_query is present in the extension string.
Bool SupportsDisjointTimerQuery = false;
// GL_KHR_parallel_shader_compile is present in the HOST driver's extension string,
// i.e. the device driver can compile its own (ESSL) shaders on its own threads.
//
// Purely informational today, and NOT what gates MobileGL's advertisement of the
// same extension: MobileGL's parallelism is its own compile pool turning GLSL into
// SPIR-V, which is where the shaderpack time goes, and it works on a driver that
// has never heard of the extension. This flag becomes load-bearing only if the
// driver-side glCompileShader of the translated ESSL is parallelised too, at which
// point it decides whether that half can overlap.
Bool SupportsParallelShaderCompile = false;
// glPolygonModeNV/ANGLE loaded (GL_NV_polygon_mode / GL_ANGLE_polygon_mode). GLES core
// has no glPolygonMode, so without this the mode stays FILL.
Bool SupportsPolygonMode = false;