Add test case for polygon offset (depth bias)

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@3655 dfc29bdd-3216-0410-991c-e03cc46cb475

tests/main.cpp

@@ -104,6 +104,7 @@ int main(int argumentCount, char * arguments[])
 	TEST(drawRectOutline);
 	TEST(guiDisabledMenu);
 	TEST(makeColorKeyTexture);
+	TEST(material);
 	TEST(renderTargetTexture);
 	TEST(textureFeatures);
 	TEST(textureRenderStates);

tests/material.cpp

+#include "testUtils.h"
+
+using namespace irr;
+
+static bool polygonOffset(video::E_DRIVER_TYPE type)
+{
+	IrrlichtDevice* device = createDevice(type, core::dimension2d<u32>(160, 120));
+
+	if (device == 0)
+		return true;
+
+	video::IVideoDriver* driver = device->getVideoDriver();
+	if (!driver->queryFeature(video::EVDF_POLYGON_OFFSET))
+		return true;
+	scene::ISceneManager* smgr = device->getSceneManager();
+
+	// create first plane
+	scene::ISceneNode* plane = smgr->addMeshSceneNode(smgr->addHillPlaneMesh(
+		"plane", core::dimension2df(10,10), core::dimension2du(2,2)), 0, -1,
+		core::vector3df(0,0,20), core::vector3df(270,0,0));
+
+	if (plane)
+	{
+		plane->setMaterialTexture(0, driver->getTexture("../media/t351sml.jpg"));
+		plane->setMaterialFlag(video::EMF_LIGHTING, false);
+		plane->setMaterialFlag(video::EMF_BACK_FACE_CULLING, true);
+	}
+
+	// create second plane exactly on top of the first one
+	scene::ISceneNode* plane2 = smgr->addMeshSceneNode(smgr->addHillPlaneMesh(
+		"plane2", core::dimension2df(5,5), core::dimension2du(2,2)), 0, -1,
+		core::vector3df(0,0,20), core::vector3df(270,0,0));
+	plane2->setMaterialFlag(video::EMF_BACK_FACE_CULLING, false);
+
+	scene::ICameraSceneNode* cam = smgr->addCameraSceneNode();
+
+	// test back plane to back
+	plane->getMaterial(0).PolygonOffsetDirection=video::EPO_BACK;
+	plane->getMaterial(0).PolygonOffsetFactor=7;
+
+	driver->beginScene(true, true, video::SColor(255,113,113,133));
+	smgr->drawAll();
+	driver->endScene();
+	bool result = takeScreenshotAndCompareAgainstReference(driver, "-polygonBack.png");
+
+	//reset back plane
+	plane->getMaterial(0).PolygonOffsetFactor=0;
+	// test front plane to front
+	plane2->getMaterial(0).PolygonOffsetDirection=video::EPO_FRONT;
+	plane2->getMaterial(0).PolygonOffsetFactor=7;
+	driver->beginScene(true, true, video::SColor(255,113,113,133));
+	smgr->drawAll();
+	driver->endScene();
+	result &= takeScreenshotAndCompareAgainstReference(driver, "-polygonFront.png");
+
+	device->closeDevice();
+	device->run();
+	device->drop();
+    return result;
+}
+
+bool material()
+{
+	bool result = polygonOffset(video::EDT_OPENGL);
+	result &= polygonOffset(video::EDT_DIRECT3D9);
+	return result;
+}
\ No newline at end of file

tests/tests.cbp

@@ -70,6 +70,7 @@
 		<Unit filename="loadTextures.cpp" />
 		<Unit filename="main.cpp" />
 		<Unit filename="makeColorKeyTexture.cpp" />
+		<Unit filename="material.cpp" />
 		<Unit filename="matrixOps.cpp" />
 		<Unit filename="md2Animation.cpp" />
 		<Unit filename="meshLoaders.cpp" />

tests/tests_vc10.vcxproj

@@ -112,6 +112,7 @@
     <ClCompile Include="loadTextures.cpp" />
     <ClCompile Include="main.cpp" />
     <ClCompile Include="makeColorKeyTexture.cpp" />
+    <ClCompile Include="material.cpp" />
     <ClCompile Include="matrixOps.cpp" />
     <ClCompile Include="md2Animation.cpp" />
     <ClCompile Include="meshLoaders.cpp" />
@@ -159,4 +160,4 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
-</Project>
+</Project>
\ No newline at end of file

tests/tests_vc8.vcproj

@@ -296,6 +296,10 @@
 				RelativePath=".\makeColorKeyTexture.cpp"
 				>
 			</File>
+			<File
+				RelativePath=".\material.cpp"
+				>
+			</File>
 			<File
 				RelativePath=".\matrixOps.cpp"
 				>

tests/tests_vc9.vcproj

@@ -295,6 +295,10 @@
 				RelativePath=".\makeColorKeyTexture.cpp"
 				>
 			</File>
+			<File
+				RelativePath=".\material.cpp"
+				>
+			</File>
 			<File
 				RelativePath=".\matrixOps.cpp"
 				>