swung0x48/MobileGL
1
0
Fork 0
mirror of https://github.com/MobileGL-Dev/MobileGL synced 2026-09-11 05:38:31 +09:00
Code Issues Packages Projects Releases Wiki Activity

[Feat] (Tessellation): implement glPatchParameterfv and bake the default levels into both pass-through control stages

Browse Source
This commit is contained in:
Swung0x48
2026-08-27 02:11:19 -04:00
parent 0f2fcbc469
commit d5286e69b6
21 changed files with 546 additions and 64 deletions
Download Patch File Download Diff File Expand all files Collapse all files
MobileGL/MG_Backend/DirectGLES/Managers.h
+15
View File
@@ -1490,6 +1490,17 @@ namespace MobileGL::MG_Backend::DirectGLES {
Int GetPassthroughTessControlPatchVertices() const {
return m_passthroughTessControlPatchVertices;
}
// GL_PATCH_DEFAULT_{OUTER,INNER}_LEVEL the same synthesized stage was built with, for
// the same reason: ES has neither the state nor an entry point to forward it to, so
// glPatchParameterfv's values are compiled in as literals and a program built with one
// set is stale for another. Meaningless (and never read) when the patch-vertices field
// above is -1, which is the gate the draw path tests first.
const FloatVec4& GetPassthroughTessControlOuterLevel() const {
return m_passthroughTessControlOuterLevel;
}
const FloatVec2& GetPassthroughTessControlInnerLevel() const {
return m_passthroughTessControlInnerLevel;
}
Bool HasGlobalUboBlock() const { return m_globalUboBackendBlockIndex >= 0; }
const Vector<Int>& GetUniformBlockBackendIndices() const { return m_uniformBlockBackendIndices; }
@@ -1590,6 +1601,10 @@ namespace MobileGL::MG_Backend::DirectGLES {
// all); otherwise the GL_PATCH_VERTICES the synthesized pass-through stage was built
// with. See GetPassthroughTessControlPatchVertices.
Int m_passthroughTessControlPatchVertices = -1;
// The default tessellation levels baked into that same stage. Only meaningful while
// the field above is not -1.
FloatVec4 m_passthroughTessControlOuterLevel = FloatVec4(1.0f, 1.0f, 1.0f, 1.0f);
FloatVec2 m_passthroughTessControlInnerLevel = FloatVec2(1.0f, 1.0f);
Bool m_isInitialized = false;
Bool m_backendProgramUsable = false;
// Set by SyncToBackend every time it relinks the driver program, cleared by the