swung0x48/MobileGL
1
0
Fork 0
mirror of https://github.com/MobileGL-Dev/MobileGL synced 2026-09-08 04:08:32 +09:00
Code Issues Packages Projects Releases Wiki Activity

[Fix] (MG_Impl, DirectGLES): answer the texture-gather offset limit queries

Browse Source 
glGetIntegerv(GL_MIN_PROGRAM_TEXTURE_GATHER_OFFSET) and its GL_MAX_ counterpart fell
through to the default arm of the getter and raised GL_INVALID_ENUM, leaving the
caller's variable untouched - KHR-GL40.texture_gather.api-enums read back the
uninitialised 32764 that happened to be on its stack and failed on the error alone.

Both are core state from GL 4.0 (table 23.53) and from ES 3.1 (table 20.40), so the
value is simply the host driver's, probed alongside the other limits in
FillInGLESCapabilities and carried to the getter through DynamicBackendParameters.
The probe result is widened to the -8/+7 core minimums rather than trusted blindly:
a driver that leaves the out-parameter alone (no ES 3.1, or an enum it ignores) would
otherwise hand us a range narrower than GL 4.0 requires MobileGL to advertise, and
the shaders the CTS builds assume the guaranteed range regardless.
This commit is contained in:
BZLZHH
2026-08-04 09:40:15 -04:00
parent 598c5497b0
commit 3dc6a1b6db
5 changed files with 26 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
MobileGL/MG_Backend/DirectGLES/BackendObject_DirectGLES.cpp
+2
View File
@@ -1072,6 +1072,8 @@ namespace MobileGL::MG_Backend::DirectGLES {
m_dynamicParameters.MaxIntegerSamples = m_GLESCapabilities.MaxIntegerSamples;
m_dynamicParameters.MaxSamples = m_GLESCapabilities.MaxSamples;
m_dynamicParameters.MaxSampleMaskWords = m_GLESCapabilities.MaxSampleMaskWords;
m_dynamicParameters.MinProgramTextureGatherOffset = m_GLESCapabilities.MinProgramTextureGatherOffset;
m_dynamicParameters.MaxProgramTextureGatherOffset = m_GLESCapabilities.MaxProgramTextureGatherOffset;
// Clamp the advertised sampler limits the same way the DirectVulkan backend does: per-stage
// GL_MAX_TEXTURE_IMAGE_UNITS must never exceed host-side fixed arrays sized off it (e.g.
// Minecraft's 128-entry Blaze3D GlStateManager.TEXTURES[], iterated by Iris), and the combined