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[Fix] (MG_Util): the unsupported-buffer-textures log tells a too-old driver apart from one whose entry point failed to resolve

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swung0x48
2026-08-12 01:24:41 -04:00
parent e310e3e9ff
commit b5e9339c66
1 changed files with 14 additions and 6 deletions
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MobileGL/MG_Util/BackendLoaders/OpenGL/Loader.cpp
+14 -6
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@@ -1176,12 +1176,20 @@ namespace MobileGL::MG_Util::BackendLoader {
// program build, and as its own driver POST row - because GL offers no way to say
// "buffer textures exist but cannot work".
if (caps.TextureBufferSupport == Tier::None) {
MGLOG_I(" Buffer textures: UNSUPPORTED (ES %d.%d core needs 3.2, and neither "
"GL_EXT_texture_buffer nor GL_OES_texture_buffer is present). Any shader "
"sampling a samplerBuffer will fail to compile, and MobileGL keeps "
"advertising GL_MAX_TEXTURE_BUFFER_SIZE = %d because a GL 4.x context may "
"not report 0.",
caps.GLESVersion.Major, caps.GLESVersion.Minor, maxTextureBufferSize);
// Two ways to land here, and they are worth telling apart: the ordinary one (too
// old, no extension) and the pathological one (the driver says it has them but
// no entry point resolved), which is a driver or loader fault, not a missing
// feature.
const Bool claimsSupport = esAtLeast32 || hasExtTextureBuffer || hasOesTextureBuffer;
MGLOG_I(" Buffer textures: UNSUPPORTED (%s). Any shader sampling a "
"samplerBuffer will fail to compile, and MobileGL keeps advertising "
"GL_MAX_TEXTURE_BUFFER_SIZE = %d because a GL 4.x context may not report 0.",
claimsSupport
? "this driver advertises buffer textures but no glTexBuffer entry "
"point resolved, so none of them can be called"
: "ES core needs 3.2, and neither GL_EXT_texture_buffer nor "
"GL_OES_texture_buffer is present",
maxTextureBufferSize);
}
}
if (caps.SupportsTextureFilterAnisotropy) {