[GL] Add stencil enable to state tracker

include/renderer_gl/gl_state.hpp

@@ -21,6 +21,7 @@ struct GLStateManager {
 	bool blendEnabled;
 	bool depthEnabled;
 	bool scissorEnabled;
+	bool stencilEnabled;
 
 	// Colour/depth masks
 	bool redMask, greenMask, blueMask, alphaMask;
@@ -40,6 +41,7 @@ struct GLStateManager {
 	void resetVBO();
 	void resetProgram();
 	void resetScissor();
+	void resetStencil();
 
 	void enableDepth() {
 		if (!depthEnabled) {
@@ -83,6 +85,20 @@ struct GLStateManager {
 		}
 	}
 
+	void enableStencil() {
+		if (!stencilEnabled) {
+			stencilEnabled = true;
+			OpenGL::enableStencil();
+		}
+	}
+
+	void disableStencil() {
+		if (stencilEnabled) {
+			stencilEnabled = false;
+			OpenGL::disableStencil();
+		}
+	}
+
 	void bindVAO(GLuint handle) {
 		if (boundVAO != handle) {
 			boundVAO = handle;

src/core/renderer_gl/gl_state.cpp

@@ -26,6 +26,11 @@ void GLStateManager::resetScissor() {
 	OpenGL::setScissor(0, 0, 0, 0);
 }
 
+void GLStateManager::resetStencil() {
+	stencilEnabled = false;
+	OpenGL::disableStencil();
+}
+
 void GLStateManager::resetVAO() {
 	boundVAO = 0;
 	glBindVertexArray(0);
@@ -50,4 +55,5 @@ void GLStateManager::reset() {
 	resetVBO();
 	resetProgram();
 	resetScissor();
+	resetStencil();
 }

src/core/renderer_gl/renderer_gl.cpp

@@ -207,7 +207,7 @@ void RendererGL::setupBlending() {
 
 void RendererGL::setupStencilTest(bool stencilEnable) {
 	if (!stencilEnable) {
-		OpenGL::disableStencil();
+		gl.disableStencil();
 		return;
 	}
 
@@ -221,7 +221,7 @@ void RendererGL::setupStencilTest(bool stencilEnable) {
 		GL_GREATER,
 		GL_GEQUAL
 	};
-	OpenGL::enableStencil();
+	gl.enableStencil();
 
 	const u32 stencilConfig = regs[PICA::InternalRegs::StencilTest];
 	const u32 stencilFunc = getBits<4, 3>(stencilConfig);
@@ -583,7 +583,7 @@ void RendererGL::displayTransfer(u32 inputAddr, u32 outputAddr, u32 inputSize, u
 	gl.disableBlend();
 	gl.disableDepth();
 	gl.disableScissor();
-	OpenGL::disableStencil();
+	gl.disableStencil();
 	gl.setColourMask(true, true, true, true);
 	gl.useProgram(displayProgram);
 	gl.bindVAO(dummyVAO);