Test the barrel shader, see #43

code/nel/include/nel/3d/stereo_ovr.h

@@ -63,6 +63,7 @@ class ITexture;
 class CTextureUser;
 class CStereoOVRDevicePtr;
 class CStereoOVRDeviceHandle;
+class CPixelProgram;
 
 #define NL_STEREO_MAX_USER_CAMERAS 8
 
@@ -147,6 +148,7 @@ private:
 	NL3D::CTextureUser *m_BarrelTexU;
 	NL3D::UMaterial m_BarrelMat;
 	NLMISC::CQuadUV m_BarrelQuad;
+	CPixelProgram *m_PixelProgram;
 
 }; /* class CStereoOVR */
 

code/nel/src/3d/stereo_ovr.cpp

@@ -68,6 +68,7 @@ using namespace std;
 namespace NL3D {
 
 extern const char *g_StereoOVR_arbfp1;
+extern const char *g_StereoOVR_ps_2_0;
 
 namespace {
 
@@ -163,7 +164,7 @@ public:
 	OVR::HMDInfo HMDInfo;
 };
 
-CStereoOVR::CStereoOVR(const CStereoOVRDeviceHandle *handle) : m_Stage(0), m_SubStage(0), m_OrientationCached(false), m_Driver(NULL), m_BarrelTexU(NULL)
+CStereoOVR::CStereoOVR(const CStereoOVRDeviceHandle *handle) : m_Stage(0), m_SubStage(0), m_OrientationCached(false), m_Driver(NULL), m_BarrelTexU(NULL), m_PixelProgram(NULL)
 {
 	++s_DeviceCounter;
 	m_DevicePtr = new CStereoOVRDevicePtr();
@@ -211,6 +212,9 @@ CStereoOVR::~CStereoOVR()
 	m_BarrelTexU = NULL;
 	m_BarrelTex = NULL; // CSmartPtr
 
+	delete m_PixelProgram;
+	m_PixelProgram = NULL;
+
 	m_Driver = NULL;
 
 	if (m_DevicePtr->SensorDevice)
@@ -227,14 +231,43 @@ CStereoOVR::~CStereoOVR()
 
 void CStereoOVR::setDriver(NL3D::UDriver *driver)
 {
-	m_Driver = driver;
 	// Do not allow weird stuff.
 	uint32 width, height;
 	driver->getWindowSize(width, height);
 	nlassert(width == m_DevicePtr->HMDInfo.HResolution);
 	nlassert(height == m_DevicePtr->HMDInfo.VResolution);
+	nlassert(!m_PixelProgram);
 
 	NL3D::IDriver *drvInternal = (static_cast<CDriverUser *>(driver))->getDriver();
+	/*static const char *program_arbfp1 =
+		"!!ARBfp1.0\n"
+		"PARAM c[1] = { { 1, 0 } };\n"
+		"MOV result.color.xzw, c[0].xyyx;\n"
+		"TEX result.color.y, fragment.texcoord[0], texture[0], 2D;\n"
+		"END\n";
+	static const char *program_ps_2_0 = 
+		"ps_2_0\n"
+		"dcl_2d s0\n"
+		"def c0, 1.00000000, 0.00000000, 0, 0\n"
+		"dcl t0.xy\n"
+		"texld r0, t0, s0\n"
+		"mov r0.z, c0.y\n"
+		"mov r0.xw, c0.x\n"
+		"mov oC0, r0\n";*/
+	/*if (drvInternal->supportPixelProgram(CPixelProgram::arbfp1))
+	{
+		nldebug("VR: arbfp1");
+		m_PixelProgram = new CPixelProgram(program_arbfp1);		
+	}
+	else */ if (drvInternal->supportPixelProgram(CPixelProgram::ps_2_0))
+	{
+		nldebug("VR: ps_2_0");
+		m_PixelProgram = new CPixelProgram(g_StereoOVR_ps_2_0);	
+	}
+
+	if (m_PixelProgram)
+	{
+		m_Driver = driver;
 
 		m_BarrelTex = new CTextureBloom(); // lol bloom
 		m_BarrelTex->setReleasable(false);
@@ -247,11 +280,12 @@ void CStereoOVR::setDriver(NL3D::UDriver *driver)
 		m_BarrelTexU = new CTextureUser(m_BarrelTex);
 
 		m_BarrelMat = m_Driver->createMaterial();
-	NL3D::CMaterial *barrelMat = m_BarrelMat.getObjectPtr();
 		m_BarrelMat.initUnlit();
 		m_BarrelMat.setColor(CRGBA::White);
 		m_BarrelMat.setBlend (false);
 		m_BarrelMat.setAlphaTest (false);
+		NL3D::CMaterial *barrelMat = m_BarrelMat.getObjectPtr();
+		barrelMat->setShader(NL3D::CMaterial::PostProcessing);
 		barrelMat->setBlendFunc(CMaterial::one, CMaterial::zero);
 		barrelMat->setZWrite(false);
 		barrelMat->setZFunc(CMaterial::always);
@@ -271,6 +305,11 @@ void CStereoOVR::setDriver(NL3D::UDriver *driver)
 		m_BarrelQuad.Uv2 = CUV(newU, newV);
 		m_BarrelQuad.Uv3 = CUV(0.f,  newV);
 	}
+	else
+	{
+		nlwarning("VR: No pixel program support");
+	}
+}
 
 void CStereoOVR::getScreenResolution(uint &width, uint &height)
 {
@@ -473,10 +512,46 @@ bool CStereoOVR::endRenderTarget()
 	{
 		CTextureUser cu;
 		(static_cast<CDriverUser *>(m_Driver))->setRenderTarget(cu);
+		bool fogEnabled = m_Driver->fogEnabled();
+		m_Driver->enableFog(false);
 
 		m_Driver->setMatrixMode2D11();
-		m_Driver->setViewport(CViewport());
+		CViewport vp = CViewport();
+		m_Driver->setViewport(vp);
+		uint32 width, height;
+		m_Driver->getWindowSize(width, height);
+		NL3D::IDriver *drvInternal = (static_cast<CDriverUser *>(m_Driver))->getDriver();
+		NL3D::CMaterial *barrelMat = m_BarrelMat.getObjectPtr();
+		barrelMat->setTexture(0, m_BarrelTex);
+		drvInternal->activePixelProgram(m_PixelProgram);
+
+		float w = float(vp.getWidth()),// / float(width),
+			h = float(vp.getHeight()),// / float(height),
+			x = float(vp.getX()),/// / float(width),
+			y = float(vp.getY());// / float(height);
+
+		float lensOffset = m_DevicePtr->HMDInfo.LensSeparationDistance * 0.5f;
+		float lensShift = m_DevicePtr->HMDInfo.HScreenSize * 0.25f - lensOffset;
+		float lensViewportShift = 4.0f * lensShift / m_DevicePtr->HMDInfo.HScreenSize;
+
+		float lensCenterX = x + (w + lensViewportShift * 0.5f) * 0.5f;
+		float lensCenterY = y + h * 0.5f;
+		float screenCenterX = x + w * 0.5f;
+		float screenCenterY = y + h * 0.5f;
+		float scaleX = (w / 2);
+		float scaleY = (h / 2);
+		float scaleInX = (2 / w);
+		float scaleInY = (2 / h);
+		drvInternal->setPixelProgramConstant(0, lensCenterX, lensCenterY, 0.f, 0.f);
+		drvInternal->setPixelProgramConstant(1, screenCenterX, screenCenterY, 0.f, 0.f);
+		drvInternal->setPixelProgramConstant(2, scaleX, scaleY, 0.f, 0.f);
+		drvInternal->setPixelProgramConstant(3, scaleInX, scaleInY, 0.f, 0.f);
+		drvInternal->setPixelProgramConstant(4, 1, m_DevicePtr->HMDInfo.DistortionK);
+
+
 		m_Driver->drawQuad(m_BarrelQuad, m_BarrelMat);
+		drvInternal->activePixelProgram(NULL);
+		m_Driver->enableFog(fogEnabled);
 
 		return true;
 	}

code/nel/src/3d/stereo_ovr_fp.cpp

@@ -78,5 +78,65 @@ const char *g_StereoOVR_arbfp1 =
 	"CMP R1.x, -R1, c[5].z, c[5].w;\n"
 	"CMP result.color, -R1.x, R0, c[5].z;\n"
 	"END\n";
+const char *g_StereoOVR_ps_2_0 =
 	//# 28 instructions, 2 R-regs
+	"ps_2_0\n"
+	// cgc version 3.1.0013, build date Apr 18 2012
+	// command line args: -profile ps_2_0
+	// source file: pp_oculus_vr.cg
+	//vendor NVIDIA Corporation
+	//version 3.1.0.13
+	//profile ps_2_0
+	//program pp_oculus_vr
+	//semantic pp_oculus_vr.cLensCenter
+	//semantic pp_oculus_vr.cScreenCenter
+	//semantic pp_oculus_vr.cScale
+	//semantic pp_oculus_vr.cScaleIn
+	//semantic pp_oculus_vr.cHmdWarpParam
+	//semantic pp_oculus_vr.cTex0 : TEX0
+	//var float2 texCoord : $vin.TEXCOORD0 : TEX0 : 0 : 1
+	//var float2 cLensCenter :  : c[0] : 1 : 1
+	//var float2 cScreenCenter :  : c[1] : 2 : 1
+	//var float2 cScale :  : c[2] : 3 : 1
+	//var float2 cScaleIn :  : c[3] : 4 : 1
+	//var float4 cHmdWarpParam :  : c[4] : 5 : 1
+	//var sampler2D cTex0 : TEX0 : texunit 0 : 6 : 1
+	//var float4 oCol : $vout.COLOR : COL : 7 : 1
+	//const c[5] = -0.25 -0.5 0.25 0.5
+	//const c[6] = 1 0
+	"dcl_2d s0\n"
+	"def c5, -0.25000000, -0.50000000, 0.25000000, 0.50000000\n"
+	"def c6, 1.00000000, 0.00000000, 0, 0\n"
+	"dcl t0.xy\n"
+	"add r0.xy, t0, -c0\n"
+	"mul r4.xy, r0, c3\n"
+	"mul r0.x, r4.y, r4.y\n"
+	"mad r0.x, r4, r4, r0\n"
+	"mul r1.x, r0, c4.w\n"
+	"mul r1.x, r1, r0\n"
+	"mad r3.x, r0, c4.y, c4\n"
+	"mul r2.x, r0, c4.z\n"
+	"mad r2.x, r0, r2, r3\n"
+	"mad r0.x, r1, r0, r2\n"
+	"mul r0.xy, r4, r0.x\n"
+	"mul r0.xy, r0, c2\n"
+	"add r3.xy, r0, c0\n"
+	"mov r1.x, c5.z\n"
+	"mov r1.y, c5.w\n"
+	"mov r2.xy, c1\n"
+	"add r2.xy, r1, r2\n"
+	"mov r1.xy, c1\n"
+	"min r2.xy, r2, r3\n"
+	"add r1.xy, c5, r1\n"
+	"max r1.xy, r1, r2\n"
+	"add r1.xy, r1, -r3\n"
+	"abs r1.xy, r1\n"
+	"cmp r1.xy, -r1, c6.x, c6.y\n"
+	"mul_pp r1.x, r1, r1.y\n"
+	"abs_pp r1.x, r1\n"
+	"cmp_pp r1.x, -r1, c6, c6.y\n"
+	"abs_pp r1.x, r1\n"
+	"texld r0, r3, s0\n"
+	"cmp r0, -r1.x, r0, c6.y\n"
+	"mov oC0, r0\n";
 }