From 809987b5158699aa70c7904fbf6d3b1b1cf79663 Mon Sep 17 00:00:00 2001
From: Sergey Lipskiy <gonetz@ngs.ru>
Date: Sat, 14 Jan 2017 21:24:48 +0700
Subject: [PATCH] Implement GraphicsDrawer::_initStates()

---
 src/Graphics/Context.cpp                      |  5 +++
 src/Graphics/Context.h                        |  2 ++
 src/Graphics/ContextImpl.h                    |  1 +
 .../OpenGLContext/opengl_ContextImpl.cpp      |  5 +++
 .../OpenGLContext/opengl_ContextImpl.h        |  2 ++
 src/GraphicsDrawer.cpp                        | 31 +++++++++++++++++++
 src/GraphicsDrawer.h                          |  1 -
 7 files changed, 46 insertions(+), 1 deletion(-)

diff --git a/src/Graphics/Context.cpp b/src/Graphics/Context.cpp
index 2a0cdc93..eb276f42 100644
--- a/src/Graphics/Context.cpp
+++ b/src/Graphics/Context.cpp
@@ -74,6 +74,11 @@ void Context::clearDepthBuffer()
 	m_impl->clearDepthBuffer();
 }
 
+void Context::setPolygonOffset(f32 _factor, f32 _units)
+{
+	m_impl->setPolygonOffset(_factor, _units);
+}
+
 ObjectHandle Context::createTexture(Parameter _target)
 {
 	return m_impl->createTexture(_target);
diff --git a/src/Graphics/Context.h b/src/Graphics/Context.h
index e620deff..bb834e16 100644
--- a/src/Graphics/Context.h
+++ b/src/Graphics/Context.h
@@ -51,6 +51,8 @@ namespace graphics {
 
 		void clearDepthBuffer();
 
+		void setPolygonOffset(f32 _factor, f32 _units);
+
 		/*---------------Texture-------------*/
 
 		ObjectHandle createTexture(Parameter _target);
diff --git a/src/Graphics/ContextImpl.h b/src/Graphics/ContextImpl.h
index 21e0f77d..b54dcf97 100644
--- a/src/Graphics/ContextImpl.h
+++ b/src/Graphics/ContextImpl.h
@@ -22,6 +22,7 @@ namespace graphics {
 		virtual void setBlendColor(f32 _red, f32 _green, f32 _blue, f32 _alpha) = 0;
 		virtual void clearColorBuffer(f32 _red, f32 _green, f32 _blue, f32 _alpha) = 0;
 		virtual void clearDepthBuffer() = 0;
+		virtual void setPolygonOffset(f32 _factor, f32 _units) = 0;
 		virtual ObjectHandle createTexture(Parameter _target) = 0;
 		virtual void deleteTexture(ObjectHandle _name) = 0;
 		virtual void init2DTexture(const Context::InitTextureParams & _params) = 0;
diff --git a/src/Graphics/OpenGLContext/opengl_ContextImpl.cpp b/src/Graphics/OpenGLContext/opengl_ContextImpl.cpp
index cbfcdf7e..b721837b 100644
--- a/src/Graphics/OpenGLContext/opengl_ContextImpl.cpp
+++ b/src/Graphics/OpenGLContext/opengl_ContextImpl.cpp
@@ -138,6 +138,11 @@ void ContextImpl::clearDepthBuffer()
 	enableScissor->enable(true);
 }
 
+void ContextImpl::setPolygonOffset(f32 _factor, f32 _units)
+{
+	glPolygonOffset(_factor, _units);
+}
+
 /*---------------Texture-------------*/
 
 graphics::ObjectHandle ContextImpl::createTexture(graphics::Parameter _target)
diff --git a/src/Graphics/OpenGLContext/opengl_ContextImpl.h b/src/Graphics/OpenGLContext/opengl_ContextImpl.h
index 896da6bc..0595edf1 100644
--- a/src/Graphics/OpenGLContext/opengl_ContextImpl.h
+++ b/src/Graphics/OpenGLContext/opengl_ContextImpl.h
@@ -44,6 +44,8 @@ namespace opengl {
 
 		void clearDepthBuffer() override;
 
+		void setPolygonOffset(f32 _factor, f32 _units) override;
+
 		/*---------------Texture-------------*/
 
 		graphics::ObjectHandle createTexture(graphics::Parameter _target) override;
diff --git a/src/GraphicsDrawer.cpp b/src/GraphicsDrawer.cpp
index 9533fb7f..5e94252e 100644
--- a/src/GraphicsDrawer.cpp
+++ b/src/GraphicsDrawer.cpp
@@ -1494,3 +1494,34 @@ void GraphicsDrawer::blitOrCopyTexturedRect(const BlitOrCopyRectParams & _params
 
 	copyTexturedRect(_params);
 }
+
+void GraphicsDrawer::_initStates()
+{
+	gfxContext.enable(enable::CULL_FACE, false);
+	gfxContext.enable(enable::SCISSOR_TEST, true);
+	gfxContext.enableDepthWrite(false);
+	gfxContext.setDepthCompare(compare::ALWAYS);
+
+	if (config.frameBufferEmulation.N64DepthCompare != 0) {
+		gfxContext.enable(enable::DEPTH_TEST, false);
+		gfxContext.enable(enable::POLYGON_OFFSET_FILL, false);
+	}
+	else {
+		gfxContext.enable(enable::DEPTH_TEST, true);
+#ifdef ANDROID
+		if (config.generalEmulation.forcePolygonOffset != 0)
+			gfxContext.setPolygonOffset(config.generalEmulation.polygonOffsetFactor, config.generalEmulation.polygonOffsetUnits);
+		else
+#endif
+			gfxContext.setPolygonOffset(-3.0f, -3.0f);
+	}
+
+	DisplayWindow & wnd = DisplayWindow::get();
+	glViewport(0, wnd.getHeightOffset(), wnd.getScreenWidth(), wnd.getScreenHeight());
+
+	gfxContext.clearColorBuffer(0.0f, 0.0f, 0.0f, 0.0f);
+
+	srand(time(nullptr));
+
+	wnd.swapBuffers();
+}
diff --git a/src/GraphicsDrawer.h b/src/GraphicsDrawer.h
index 8dc1cfa3..be72ca97 100644
--- a/src/GraphicsDrawer.h
+++ b/src/GraphicsDrawer.h
@@ -141,7 +141,6 @@ public:
 private:
 	GraphicsDrawer(const GraphicsDrawer &);
 
-	void _initExtensions();
 	void _initStates();
 	void _initData();
 	void _destroyData();