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[Feat] (MG_Impl/GLImpl, MG_State): implement glPrimitiveRestartIndex

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Store the primitive restart index as render state and report it through
glGetIntegerv(GL_PRIMITIVE_RESTART_INDEX), replacing the stub and the
hardcoded 0 in the getter.

- RenderState gains a PrimitiveRestartIndex field (default 0) with
  set/get accessors and GLContext wrappers.
- glPrimitiveRestartIndex accepts any GLuint and generates no error.
- glGetIntegerv(GL_PRIMITIVE_RESTART_INDEX) now reads the stored value.

This is the state layer only. The backends do not yet honor an arbitrary
restart index at draw time -- Vulkan and GLES support only the fixed
all-ones restart value (GL_PRIMITIVE_RESTART_FIXED_INDEX) -- so a non-
default index is tracked and queryable but not yet applied to indexed
draws.

Tests: RenderStateSanity round-trip (default 0, mid value, and the full
32-bit range). Full SanityTest sweep green (31/31).
This commit is contained in:
swung0x48
2026-07-11 00:43:45 -04:00
parent 22ac8a8c10
commit e18d369adf
9 changed files with 63 additions and 2 deletions
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MobileGL/MG_Impl/GLImpl/Exporting/Definitions.cpp
+1 -1
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@@ -860,7 +860,7 @@ DECLARE_GL_FUNCTION_HEAD(void, VertexAttrib4sv, GLuint index, const GLshort* v)
DECLARE_GL_FUNCTION_HEAD(void, VertexAttrib4ubv, GLuint index, const GLubyte* v) DECLARE_GL_FUNCTION_END_NO_RETURN(void, VertexAttrib4ubv, index, v)
DECLARE_GL_FUNCTION_HEAD(void, VertexAttrib4uiv, GLuint index, const GLuint* v) DECLARE_GL_FUNCTION_END_NO_RETURN(void, VertexAttrib4uiv, index, v)
DECLARE_GL_FUNCTION_HEAD(void, VertexAttrib4usv, GLuint index, const GLushort* v) DECLARE_GL_FUNCTION_END_NO_RETURN(void, VertexAttrib4usv, index, v)
DECLARE_GL_FUNCTION_STUB_HEAD(void, PrimitiveRestartIndex, GLuint index) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, PrimitiveRestartIndex, index)
DECLARE_GL_FUNCTION_HEAD(void, PrimitiveRestartIndex, GLuint index) DECLARE_GL_FUNCTION_END_NO_RETURN(void, PrimitiveRestartIndex, index)
DECLARE_GL_FUNCTION_HEAD(void, GetActiveUniformName, GLuint program, GLuint uniformIndex, GLsizei bufSize, GLsizei* length, GLchar* uniformName) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetActiveUniformName, program, uniformIndex, bufSize, length, uniformName)
DECLARE_GL_FUNCTION_HEAD(void, MultiDrawElementsBaseVertex, GLenum mode, const GLsizei* count, GLenum type, const void* const* indices, GLsizei drawcount, const GLint* basevertex) DECLARE_GL_FUNCTION_END_NO_RETURN(void, MultiDrawElementsBaseVertex, mode, count, type, indices, drawcount, basevertex)
DECLARE_GL_FUNCTION_HEAD(void, ProvokingVertex, GLenum mode) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ProvokingVertex, mode)