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[Fix] (ShaderTranspiler, Link, DirectGLES, DirectVulkan): demote tessellation/geometry gl_PointSize to an ordinary varying where the device cannot host the built-in - the value survives for gl_in reads and by-name capture, both backends' declines stay for shapes the pass refuses, and the verdict rides the L1 key

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swung0x48
2026-08-28 06:21:30 -04:00
parent 92dc41ebf9
commit d7f66722d1
21 changed files with 1320 additions and 6 deletions
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MobileGL/MG_Backend/DirectGLES/BackendObject_DirectGLES.cpp
+30
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@@ -1479,6 +1479,36 @@ namespace MobileGL::MG_Backend::DirectGLES {
// Follows the line above, and must: OpenGL ES has no double-precision vertex format and no
// fp64 type to consume one with, so a 64-bit vertex attribute has nowhere to land here.
m_dynamicParameters.SupportsFloat64VertexAttributes = false;
// Whether a tessellation / geometry stage's ESSL may name gl_PointSize at all: the two
// extension pairs the loader probed, independently, because they really do come
// separately. False arms the shared phase-B demotion
// (ShaderCompiler::DemoteTessellationGeometryPointSizeForProgram), whose ESSL then
// never names the built-in in those stages and needs no extension.
// MOBILEGL_POINT_SIZE_DEMOTION=1 pretends both are absent so the demotion can be
// exercised on a healthy driver (the pinned integration lane); =0 restores the
// detected answer's declines.
m_dynamicParameters.SupportsTessellationPointSize =
m_GLESCapabilities.TessellationPointSizeSupport !=
MG_External::GLESCapabilities::PointSizeTier::None;
m_dynamicParameters.SupportsGeometryPointSize =
m_GLESCapabilities.GeometryPointSizeSupport !=
MG_External::GLESCapabilities::PointSizeTier::None;
switch (MG_Config::Features.PointSizeDemotion) {
case MG_Config::QuirkOverride::ForceOn:
MGLOG_I("DirectGLES: MOBILEGL_POINT_SIZE_DEMOTION=1 - treating tessellation/geometry "
"gl_PointSize as unhosted so the demotion runs on this driver");
m_dynamicParameters.SupportsTessellationPointSize = false;
m_dynamicParameters.SupportsGeometryPointSize = false;
break;
case MG_Config::QuirkOverride::ForceOff:
MGLOG_I("DirectGLES: MOBILEGL_POINT_SIZE_DEMOTION=0 - keeping the built-in and the "
"plain declines regardless of the driver's extensions");
m_dynamicParameters.SupportsTessellationPointSize = true;
m_dynamicParameters.SupportsGeometryPointSize = true;
break;
case MG_Config::QuirkOverride::Auto:
break;
}
m_dynamicParameters.MaxDrawBuffers = m_GLESCapabilities.MaxDrawBuffers;
m_dynamicParameters.MaxColorAttachments = m_GLESCapabilities.MaxColorAttachments;
m_dynamicParameters.MaxClipDistances = m_GLESCapabilities.MaxClipDistances;