From 66d87fb84568747c8555a5fd5b9bbe948f326c4c Mon Sep 17 00:00:00 2001
From: T_chan <t_chan4958@hotmail.com>
Date: Tue, 18 Jan 2022 20:29:27 +0000
Subject: [PATCH] Add stubs for Stencil functions glStencilFunc() and
 glStencilOp()

---
 GL/state.c      | 12 ++++++++++++
 include/GL/gl.h | 20 ++++++++++++++++++++
 2 files changed, 32 insertions(+)

diff --git a/GL/state.c b/GL/state.c
index 4b48966..c5e36e1 100644
--- a/GL/state.c
+++ b/GL/state.c
@@ -630,6 +630,18 @@ void _glApplyScissor(bool force) {
     SCISSOR_RECT.applied = true;
 }
 
+void glStencilFunc(GLenum func, GLint ref, GLuint mask) {
+    _GL_UNUSED(func);
+    _GL_UNUSED(ref);
+    _GL_UNUSED(mask);
+}
+
+void glStencilOp(GLenum sfail, GLenum dpfail, GLenum dppass) {
+    _GL_UNUSED(sfail);
+    _GL_UNUSED(dpfail);
+    _GL_UNUSED(dppass);
+}
+
 GLboolean APIENTRY glIsEnabled(GLenum cap) {
     switch(cap) {
     case GL_DEPTH_TEST:
diff --git a/include/GL/gl.h b/include/GL/gl.h
index c456c86..d0b553c 100644
--- a/include/GL/gl.h
+++ b/include/GL/gl.h
@@ -47,6 +47,24 @@ __BEGIN_DECLS
 #define GL_SCISSOR_TEST     0x0008      /* capability bit */
 #define GL_SCISSOR_BOX      0x0C10
 
+/* Stencil actions */
+#define GL_KEEP             0x1E00
+#define GL_ZERO             0x0000
+#define GL_REPLACE          0x1E01
+#define GL_INCR             0x1E02
+#define GL_DECR             0x1E03
+#define GL_INVERT           0x150A
+
+/* Stencil comparison functions */
+#define GL_NEVER            0x0200
+#define GL_ALWAYS           0x0207
+#define GL_LESS             0x0201
+#define GL_LEQUAL           0x0203
+#define GL_EQUAL            0x0202
+#define GL_GEQUAL           0x0206
+#define GL_GREATER          0x0204
+#define GL_NOTEQUAL         0x0205
+
 /* Matrix modes */
 #define GL_MATRIX_MODE      0x0BA0
 #define GL_MODELVIEW        0x1700
@@ -657,6 +675,8 @@ GLAPI void APIENTRY glPolygonOffset(GLfloat factor, GLfloat units);
 GLAPI void APIENTRY glGetTexParameteriv(GLenum target, GLenum pname, GLint * params);
 GLAPI void APIENTRY glColorMask(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);
 GLAPI void APIENTRY glPixelStorei(GLenum pname, GLint param);
+GLAPI void APIENTRY glStencilFunc(GLenum func, GLint ref, GLuint mask);
+GLAPI void APIENTRY glStencilOp(GLenum sfail, GLenum dpfail, GLenum dppass);
 
 __END_DECLS