Add a test case for mrt usage. Based on code by wing64.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@3414 dfc29bdd-3216-0410-991c-e03cc46cb475

tests/main.cpp

@@ -110,6 +110,8 @@ int main(int argumentCount, char * arguments[])
 	TEST(draw2DImage);
 	TEST(lights);
 	TEST(twodmaterial);
+//	TEST(viewPort);
+	TEST(mrt);
 	// TODO: Needs to be fixed first.
 //	TEST(projectionMatrix);
 	// large scenes/long rendering

tests/mrt.cpp

@@ -0,0 +1,84 @@
+// Copyright (C) 2008-2009 Christian Stehno, Colin MacDonald
+// No rights reserved: this software is in the public domain.
+
+#include "testUtils.h"
+
+using namespace irr;
+using namespace core;
+using namespace scene;
+using namespace video;
+using namespace io;
+using namespace gui;
+
+//! Tests rendering MRTs
+static bool testWithDriver(E_DRIVER_TYPE driverType)
+{
+	IrrlichtDevice *device = createDevice (driverType, core::dimension2d < u32 > (220, 80));
+	if (!device)
+		return true; // No error if device does not exist
+	if (device->getVideoDriver()->getDriverAttributes().getAttributeAsInt("MaxMultipleRenderTargets") < 3)
+		return true;
+
+	IVideoDriver* driver = device->getVideoDriver();
+	const char* const ps1="struct PS_INPUT\n {\n float4 Position      : POSITION0;\n };\n\n struct PS_OUTPUT\n {\n float4   Color      : COLOR0;\n float4   Normal      : COLOR1;\n float4   Depth      : COLOR2;\n };\n PS_OUTPUT pixelMain( PS_INPUT Input )\n {\n PS_OUTPUT Output;\n Output.Color = float4(1.0,1.0,1.0,1.0);\n Output.Normal = float4(0.0,1.0,0.0,1.0);\n Output.Depth = float4(0.0,0.0,1.0,1.0);\n return Output;\n }";
+	const char* const ps2="void main(void)\n {\n gl_FragData[0] = vec4(1.0,1.0,1.0,1.0);\n gl_FragData[1] = vec4(0.0,1.0,0.0,1.0);\n gl_FragData[2] = vec4(0.0,0.0,1.0,1.0);\n }";
+
+	// variable
+	ITexture* gbuffer[3];
+	array<IRenderTarget> gbufferlist;
+	core::dimension2du texsize(64,64);
+
+	// allocate buffer
+	gbuffer[0] = driver->addRenderTargetTexture(texsize, "rta", ECF_A8R8G8B8);
+	gbuffer[1] = driver->addRenderTargetTexture(texsize, "rtb", ECF_A8R8G8B8);
+	gbuffer[2] = driver->addRenderTargetTexture(texsize, "rtc", ECF_A8R8G8B8);
+	for( u32 i = 0; i < 3; ++i )
+	   gbufferlist.push_back( IRenderTarget(gbuffer[i]) );
+
+	video::IGPUProgrammingServices* gpu = driver->getGPUProgrammingServices();
+	s32 newMaterialType = 0;
+
+	if (gpu)
+	{
+		newMaterialType = gpu->addHighLevelShaderMaterial(
+			0, "vertexMain", video::EVST_VS_1_1,
+			driverType==video::EDT_DIRECT3D9?ps1:ps2, "pixelMain", video::EPST_PS_1_1);
+	}
+
+	ISceneNode* node = device->getSceneManager()->addCubeSceneNode();
+	node->setMaterialType((video::E_MATERIAL_TYPE)newMaterialType);
+	device->getSceneManager()->addCameraSceneNode(0, core::vector3df(0,0,-10));
+
+	driver->beginScene (true, true, video::SColor (255, 200, 200, 200));
+	// render
+	driver->setRenderTarget( gbufferlist );
+	device->getSceneManager()->drawAll();
+	driver->setRenderTarget(0);
+
+	// draw debug rt
+	driver->draw2DImage(gbuffer[0], core::position2d<s32>(0,0));
+	driver->draw2DImage(gbuffer[1], core::position2d<s32>(64,0));
+	driver->draw2DImage(gbuffer[2], core::position2d<s32>(128,0)); 
+
+	driver->endScene();
+
+	bool result = takeScreenshotAndCompareAgainstReference(driver, "-mrt.png");
+
+	device->closeDevice();
+	device->run();
+	device->drop();
+
+	return result;
+}
+
+
+bool mrt(void)
+{
+	bool passed = true;
+
+	passed &= testWithDriver(EDT_OPENGL);
+	passed &= testWithDriver(EDT_DIRECT3D9);
+
+	return passed;
+}
+

tests/tests.cbp

@@ -63,6 +63,9 @@
 		<Unit filename="makeColorKeyTexture.cpp" />
 		<Unit filename="matrixOps.cpp" />
 		<Unit filename="md2Animation.cpp" />
+		<Unit filename="meshLoaders.cpp" />
+		<Unit filename="meshTransform.cpp" />
+		<Unit filename="mrt.cpp" />
 		<Unit filename="planeMatrix.cpp" />
 		<Unit filename="removeCustomAnimator.cpp" />
 		<Unit filename="sceneCollisionManager.cpp" />

tests/tests_vc10.vcxproj

@@ -115,6 +115,7 @@
     <ClCompile Include="md2Animation.cpp" />
     <ClCompile Include="meshLoaders.cpp" />
     <ClCompile Include="meshTransform.cpp" />
+    <ClCompile Include="mrt.cpp" />
     <ClCompile Include="orthoCam.cpp" />
     <ClCompile Include="planeMatrix.cpp" />
     <ClCompile Include="removeCustomAnimator.cpp" />
@@ -137,7 +138,7 @@
     <ClCompile Include="textureFeatures.cpp" />
     <ClCompile Include="textureRenderStates.cpp" />
     <ClCompile Include="timer.cpp" />
-    <ClCompile Include="transparentAlphaChannelRef.cpp" />
+    <ClCompile Include="transparentMaterials.cpp" />
     <ClCompile Include="vectorPositionDimension2d.cpp" />
     <ClCompile Include="videoDriver.cpp" />
     <ClCompile Include="writeImageToFile.cpp" />

tests/tests_vc8.vcproj

@@ -268,6 +268,18 @@
 				RelativePath=".\md2Animation.cpp"
 				>
 			</File>
+			<File
+				RelativePath=".\meshLoaders.cpp"
+				>
+			</File>
+			<File
+				RelativePath=".\meshTransform.cpp"
+				>
+			</File>
+			<File
+				RelativePath=".\mrt.cpp"
+				>
+			</File>
 			<File
 				RelativePath=".\planeMatrix.cpp"
 				>

tests/tests_vc9.vcproj

@@ -307,6 +307,10 @@
 				RelativePath=".\meshTransform.cpp"
 				>
 			</File>
+			<File
+				RelativePath=".\mrt.cpp"
+				>
+			</File>
 			<File
 				RelativePath=".\orthoCam.cpp"
 				>