Implement a very basic stencil upload.

This is not fast or efficient, but works.

GPU/GLES/Framebuffer.cpp

@@ -101,7 +101,7 @@ enum {
 	FBO_OLD_AGE = 5,
 };
 
-static bool MaskedEqual(u32 addr1, u32 addr2) {
+bool FramebufferManager::MaskedEqual(u32 addr1, u32 addr2) {
 	return (addr1 & 0x03FFFFFF) == (addr2 & 0x03FFFFFF);
 }
 
@@ -160,7 +160,7 @@ void CenterRect(float *x, float *y, float *w, float *h,
 	*h = outH;
 }
 
-static void ClearBuffer() {
+void FramebufferManager::ClearBuffer() {
 	glstate.scissorTest.disable();
 	glstate.depthWrite.set(GL_TRUE);
 	glstate.colorMask.set(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
@@ -175,7 +175,7 @@ static void ClearBuffer() {
 	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
 }
 
-static void DisableState() {
+void FramebufferManager::DisableState() {
 	glstate.blend.disable();
 	glstate.cullFace.disable();
 	glstate.depthTest.disable();
@@ -322,6 +322,7 @@ FramebufferManager::FramebufferManager() :
 	convBuf_(0),
 	draw2dprogram_(0),
 	postShaderProgram_(0),
+	stencilUploadProgram_(0),
 	plainColorLoc_(-1),
 	timeLoc_(-1),
 	textureCache_(0),
@@ -361,6 +362,9 @@ FramebufferManager::~FramebufferManager() {
 	if (draw2dprogram_) {
 		glsl_destroy(draw2dprogram_);
 	}
+	if (stencilUploadProgram_) {
+		glsl_destroy(stencilUploadProgram_);
+	}
 	SetNumExtraFBOs(0);
 
 	for (auto it = renderCopies_.begin(), end = renderCopies_.end(); it != end; ++it) {