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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)
MobileGL/MG_Impl/GLImpl/Getter/GL_Getter.cpp
+1 -1
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@@ -1351,7 +1351,7 @@ namespace MobileGL::MG_Impl::GLImpl {
: GL_FALSE;
return;
case GL_PRIMITIVE_RESTART_INDEX:
*params = 0; // fixed default; PrimitiveRestartIndex entrypoints are stubbed
*params = static_cast<GLint>(MG_State::pGLContext->GetPrimitiveRestartIndex());
return;
case GL_PROGRAM_BINARY_FORMATS:
*params = 0; // program-binary entrypoints are stubbed
MobileGL/MG_Impl/GLImpl/RenderState/GL_RenderState.cpp
+9
View File
@@ -561,6 +561,11 @@ namespace MobileGL::MG_Impl::GLImpl {
buf, BoolVec4(red != GL_FALSE, green != GL_FALSE, blue != GL_FALSE, alpha != GL_FALSE));
}
void PrimitiveRestartIndex_State(GLuint index) {
// glPrimitiveRestartIndex accepts any GLuint and generates no error.
MG_State::pGLContext->SetPrimitiveRestartIndex(index);
}
void ClampColor_State(GLenum target, GLenum clamp) {
// GL 3.3 core: the only legal target is GL_CLAMP_READ_COLOR. The compatibility-only
// GL_CLAMP_VERTEX_COLOR / GL_CLAMP_FRAGMENT_COLOR were removed from the core profile and
@@ -924,6 +929,10 @@ namespace MobileGL::MG_Impl::GLImpl {
ClampColor_State(target, clamp);
}
void PrimitiveRestartIndex(GLuint index) {
PrimitiveRestartIndex_State(index);
}
void BlendFuncSeparate(GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorAlpha, GLenum dfactorAlpha) {
BlendFuncSeparate_State(sfactorRGB, dfactorRGB, sfactorAlpha, dfactorAlpha);
}
MobileGL/MG_Impl/GLImpl/RenderState/GL_RenderState.h
+1
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@@ -53,6 +53,7 @@ namespace MobileGL::MG_Impl::GLImpl {
void ColorMask(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);
void ColorMaski(GLuint index, GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);
void ClampColor(GLenum target, GLenum clamp);
void PrimitiveRestartIndex(GLuint index);
void BlendFuncSeparate(GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorAlpha, GLenum dfactorAlpha);
void BlendEquation(GLenum mode);
void BlendEquationSeparate(GLenum modeRGB, GLenum modeAlpha);