public GraphicsDevice(Size size, WindowMode window)
{
Console.WriteLine("Using Cg renderer");
windowSize = size;
var extensions = new []
{
"GL_ARB_vertex_program",
"GL_ARB_fragment_program",
"GL_ARB_vertex_buffer_object",
};
surf = SdlGraphics.InitializeSdlGl(ref windowSize, window, extensions);
cgContext = Tao.Cg.Cg.cgCreateContext();
Tao.Cg.Cg.cgSetErrorCallback(CgErrorCallback);
Tao.Cg.CgGl.cgGLRegisterStates(cgContext);
Tao.Cg.CgGl.cgGLSetManageTextureParameters(cgContext, true);
vertexProfile = CgGl.cgGLGetLatestProfile(CgGl.CG_GL_VERTEX);
fragmentProfile = CgGl.cgGLGetLatestProfile(CgGl.CG_GL_FRAGMENT);
Gl.glEnableClientState(Gl.GL_VERTEX_ARRAY);
ErrorHandler.CheckGlError();
Gl.glEnableClientState(Gl.GL_TEXTURE_COORD_ARRAY);
ErrorHandler.CheckGlError();
Sdl.SDL_SetModState(0); // i have had enough.
input = new SdlInput(surf);
}
public override void RenderingConfigurationChanged(RenderingConfigurator conf)
{
renderingConfiguration = conf;
if (LasDataManager.ColorPallette != null)
{
LasDataManager.ColorPallette.ColorMode = renderingConfiguration.colorType;
}
selectedTexture = (int)renderingConfiguration.pointTexture;
CgGl.cgGLSetParameter1f(m_CGparam_sizeFactorPass1, renderingConfiguration.pointSize);
checkForCgError("setting sizeFactor");
CgGl.cgGLSetParameter1f(m_CGparam_sizeFactorPass2, renderingConfiguration.pointSize);
checkForCgError("setting sizeFactor2");
CgGl.cgGLSetParameter1f(m_CGparam_zoffsetPass1, renderingConfiguration.Zoffset);
checkForCgError("setting zoffset");
CgGl.cgGLSetParameter1f(m_CGparam_splatRotationCutoffDistPass1, renderingConfiguration.splatRotationCutoffDistance);
checkForCgError("setting splatRotationCutoffDistancePass1");
CgGl.cgGLSetParameter1f(m_CGparam_splatRotationCutoffDistPass2, renderingConfiguration.splatRotationCutoffDistance);
checkForCgError("setting splatRotationCutoffDistancePass2");
}
static void display()
{
Gl.glClear(Gl.GL_COLOR_BUFFER_BIT | Gl.GL_DEPTH_BUFFER_BIT);
Cg.cgSetParameter1f(myCgVertexParam_twisting, myTwisting);
CgGl.cgGLBindProgram(myCgVertexProgram);
checkForCgError("binding vertex program");
CgGl.cgGLEnableProfile(myCgVertexProfile);
checkForCgError("enabling vertex profile");
CgGl.cgGLBindProgram(myCgFragmentProgram);
checkForCgError("binding fragment program");
CgGl.cgGLEnableProfile(myCgFragmentProfile);
checkForCgError("enabling fragment profile");
drawSubDividedTriangle(5);
CgGl.cgGLDisableProfile(myCgVertexProfile);
checkForCgError("disabling vertex profile");
CgGl.cgGLDisableProfile(myCgFragmentProfile);
checkForCgError("disabling fragment profile");
Glut.glutSwapBuffers();
}
static void Display()
{
Gl.glClear(Gl.GL_COLOR_BUFFER_BIT | Gl.GL_DEPTH_BUFFER_BIT);
CgGl.cgGLBindProgram(myCgVertexProgram);
checkForCgError("binding vertex program");
CgGl.cgGLEnableProfile(myCgVertexProfile);
checkForCgError("enabling vertex profile");
CgGl.cgGLBindProgram(myCgFragmentProgram);
checkForCgError("binding fragment program");
CgGl.cgGLEnableProfile(myCgFragmentProfile);
checkForCgError("enabling fragment profile");
DrawStars();
CgGl.cgGLDisableProfile(myCgVertexProfile);
checkForCgError("disabling vertex profile");
CgGl.cgGLDisableProfile(myCgFragmentProfile);
checkForCgError("disabling fragment profile");
Glut.glutSwapBuffers();
}
private void DisableShaders()
{
CgGl.cgGLDisableProfile(m_CG_fragmentProfile);
checkForCgError("disabling fragment profile");
CgGl.cgGLDisableProfile(m_CG_vertexProfile);
checkForCgError("disabling fragment profile");
}
public override void WindowResized(int width, int height, float FOV)
{
CgGl.cgGLSetParameter3f(m_CGparam_viewParamsPass1, width, height, FOV);
checkForCgError("setting viewParams pass 1");
CgGl.cgGLSetParameter3f(m_CGparam_viewParamsPass2, width, height, FOV);
checkForCgError("setting viewParams pass 2");
}
/// <summary>
/// Compiles and loads a Cg program</summary>
/// <param name="id">ID string for the Cg program we want to compile and load</param>
public static void LoadProgram(string id)
{
if (!Cg.cgIsProgramCompiled(m_cg_programs[id]))
{
Cg.cgCompileProgram(m_cg_programs[id]);
}
if (!CgGl.cgGLIsProgramLoaded(m_cg_programs[id]))
{
CgGl.cgGLLoadProgram(m_cg_programs[id]);
}
}
public GraphicsDevice(Size size, WindowMode window)
: base(size, window, requiredExtensions)
{
Context = Tao.Cg.Cg.cgCreateContext();
Tao.Cg.Cg.cgSetErrorCallback(errorCallback);
CgGl.cgGLRegisterStates(Context);
CgGl.cgGLSetManageTextureParameters(Context, true);
VertexProfile = CgGl.cgGLGetLatestProfile(CgGl.CG_GL_VERTEX);
FragmentProfile = CgGl.cgGLGetLatestProfile(CgGl.CG_GL_FRAGMENT);
}
/// <summary>
/// Initializes CgfxCore</summary>
public static void Init()
{
Cg.cgSetErrorCallback(ErrorCallback);
if (CgGl.cgGLIsProfileSupported(Cg.CG_PROFILE_ARBVP1))
{
m_cg_profiles["arbvp1"] = Cg.CG_PROFILE_ARBVP1;
}
if (CgGl.cgGLIsProfileSupported(Cg.CG_PROFILE_ARBFP1))
{
m_cg_profiles["arbfp1"] = Cg.CG_PROFILE_ARBFP1;
}
if (CgGl.cgGLIsProfileSupported(Cg.CG_PROFILE_VP20))
{
m_cg_profiles["vp20"] = Cg.CG_PROFILE_VP20;
}
if (CgGl.cgGLIsProfileSupported(Cg.CG_PROFILE_FP20))
{
m_cg_profiles["fp20"] = Cg.CG_PROFILE_FP20;
}
if (CgGl.cgGLIsProfileSupported(Cg.CG_PROFILE_VP30))
{
m_cg_profiles["vp30"] = Cg.CG_PROFILE_VP30;
}
if (CgGl.cgGLIsProfileSupported(Cg.CG_PROFILE_FP30))
{
m_cg_profiles["fp30"] = Cg.CG_PROFILE_FP30;
}
if (CgGl.cgGLIsProfileSupported(Cg.CG_PROFILE_VP30))
{
m_cg_profiles["vp40"] = Cg.CG_PROFILE_VP40;
}
const int FP40 = 6151;
if (CgGl.cgGLIsProfileSupported(Cg.CG_PROFILE_FP30))
{
m_cg_profiles["fp40"] = FP40;
}
if (Cg.cgIsContext(m_cg_context) == 0)
{
m_cg_context = Cg.cgCreateContext();
}
}
public static void Run()
{
string filePath = Path.Combine("..", "..");
string fileDirectory = "Data";
string vertexFileName = "C2E1v_green.cg";
if (File.Exists(vertexFileName))
{
filePath = "";
fileDirectory = "";
}
else if (File.Exists(Path.Combine(fileDirectory, vertexFileName)))
{
filePath = "";
}
string myVertexProgramFileName = Path.Combine(Path.Combine(filePath, fileDirectory), vertexFileName);
KeyboardDelegate += Keyboard;
Glut.glutInitWindowSize(400, 400);
Glut.glutInitDisplayMode(Glut.GLUT_RGB | Glut.GLUT_DOUBLE | Glut.GLUT_DEPTH);
Glut.glutInit();
Glut.glutCreateWindow(myProgramName);
Glut.glutDisplayFunc(Display);
Glut.glutKeyboardFunc(KeyboardDelegate);
Gl.glClearColor(0.1f, 0.3f, 0.6f, 0.0f); /* Blue background */
myCgContext = Cg.cgCreateContext();
checkForCgError("creating context");
myCgVertexProfile = CgGl.cgGLGetLatestProfile(CgGl.CG_GL_VERTEX);
CgGl.cgGLSetOptimalOptions(myCgVertexProfile);
checkForCgError("selecting vertex profile");
myCgVertexProgram =
Cg.cgCreateProgramFromFile(
myCgContext, /* Cg runtime context */
Cg.CG_SOURCE, /* Program in human-readable form */
myVertexProgramFileName, /* Name of file containing program */
myCgVertexProfile, /* Profile: OpenGL ARB vertex program */
myVertexProgramName, /* Entry function name */
null); /* No extra compiler options */
checkForCgError("creating vertex program from file");
CgGl.cgGLLoadProgram(myCgVertexProgram);
checkForCgError("loading vertex program");
Glut.glutMainLoop();
}
private void EnableShadersPass3()
{
CgGl.cgGLBindProgram(m_CGp_vertexProgramPass3);
checkForCgError("binding vertex program3");
CgGl.cgGLEnableProfile(m_CG_vertexProfile);
checkForCgError("enabling vertex profile3");
CgGl.cgGLBindProgram(m_CGp_fragmentProgramPass3);
checkForCgError("binding fragment program3");
CgGl.cgGLEnableProfile(m_CG_fragmentProfile);
checkForCgError("enabling fragment profile3");
}
/// <summary>
/// Enables or binds a texture with a parameter and a texture ID</summary>
/// <param name="parameter">Name of parameter used in the Cg program, usually a Simpler2D</param>
/// <param name="texture_id">Texture ID from glTexGen()</param>
/// <returns>True if texture enabled successfully</returns>
public static bool EnableTexture(string parameter, int texture_id)
{
IntPtr param;
try {
m_cg_parameters.TryGetValue(parameter, out param);
if (param == (IntPtr)0)
{
return(false);
}
CgGl.cgGLSetTextureParameter(param, texture_id);
CgGl.cgGLEnableTextureParameter(param);
}
catch { }
return(false);
}
/// <summary>
/// Disables or unbinds a specific parameter</summary>
/// <param name="parameter">Name of parameter used in the Cg program, usually a Simpler2D</param>
/// <returns>True if texture disabled successfully</returns>
public static bool DisableTexture(string parameter)
{
IntPtr param;
try {
m_cg_parameters.TryGetValue(parameter, out param);
if (param == (IntPtr)0)
{
return(false);
}
CgGl.cgGLDisableTextureParameter(param);
return(true);
}
catch { }
return(false);
}
private void EnableShadersPass2(Vector3f eyeVector)
{
SetShaderParametersPass2(eyeVector);
CgGl.cgGLBindProgram(m_CGp_vertexProgramPass2);
checkForCgError("binding vertex program2");
CgGl.cgGLEnableProfile(m_CG_vertexProfile);
checkForCgError("enabling vertex profile2");
CgGl.cgGLBindProgram(m_CGp_fragmentProgramPass2);
checkForCgError("binding fragment program2");
CgGl.cgGLEnableProfile(m_CG_fragmentProfile);
checkForCgError("enabling fragment profile2");
}
/// <summary>
/// Sets parameter used in a Cg program</summary>
/// <param name="parameter">Name of parameter that we want to set</param>
/// <param name="array">Float array as values that we want to set parameter with</param>
/// <returns>True if parameter set successfully</returns>
public static bool SetParameter(string parameter, float[] array)
{
if (array == null)
{
return(false);
}
IntPtr param;
try {
m_cg_parameters.TryGetValue(parameter, out param);
if (param == (IntPtr)0)
{
return(false);
}
int length = array.Length;
switch (length)
{
case 1:
Cg.cgSetParameter1f(param, array[0]);
break;
case 2:
Cg.cgSetParameter2f(param, array[0], array[1]);
break;
case 3:
Cg.cgSetParameter3f(param, array[0], array[1], array[2]);
break;
case 4:
Cg.cgSetParameter4f(param, array[0], array[1], array[2], array[3]);
break;
case 16:
CgGl.cgGLSetMatrixParameterfc(param, array);
break;
default:
break;
}
}
catch { return(false); }
return(true);
}
/// <summary>
/// Sets a matrix parameter on a special semantic in a Cg program</summary>
/// <param name="parameter">Name of parameter that we want to set</param>
/// <param name="semantic">The semantic that is needed to set a parameter in a special way</param>
/// <returns>True if parameter set successfully</returns>
public static bool SetMatrixParameter(string parameter, string semantic)
{
IntPtr param;
int matrix = 0;
int tranform = 0;
try
{
m_cg_parameters.TryGetValue(parameter, out param);
if (semantic == "WORLDVIEWPROJECTION")
{
matrix = CgGl.CG_GL_MODELVIEW_PROJECTION_MATRIX;
tranform = CgGl.CG_GL_MATRIX_IDENTITY;
}
CgGl.cgGLSetStateMatrixParameter(param, matrix, tranform);
return(true);
}
catch { }
return(false);
}
private void SetShaderParametersPass2(Vector3f eyeVect)
{
CgGl.cgGLSetParameter3f(m_CGparam_eyePositionPass2, ViewerPosition.x, ViewerPosition.y, ViewerPosition.z);
checkForCgError("setting eyePos2");
// Track the combined model-view-projection matrix
CgGl.cgGLSetStateMatrixParameter(m_CGparam_modelViewProjPass2,
CgGl.CG_GL_MODELVIEW_PROJECTION_MATRIX,
CgGl.CG_GL_MATRIX_IDENTITY);
checkForCgError("setting model view projection matrix parameter2");
//set modelViewIT matrix
CgGl.cgGLSetStateMatrixParameter(m_CGparam_modelViewITPass2,
CgGl.CG_GL_MODELVIEW_MATRIX,
CgGl.CG_GL_MATRIX_INVERSE_TRANSPOSE);
checkForCgError("setting model view IT matrix parameter2");
CgGl.cgGLSetStateMatrixParameter(m_CGparam_modelViewPass2,
CgGl.CG_GL_MODELVIEW_MATRIX,
CgGl.CG_GL_MATRIX_IDENTITY);
checkForCgError("setting model view matrix parameter2");
}
static void Display()
{
Gl.glClear(Gl.GL_COLOR_BUFFER_BIT | Gl.GL_DEPTH_BUFFER_BIT);
CgGl.cgGLBindProgram(myCgVertexProgram);
checkForCgError("binding vertex program");
CgGl.cgGLEnableProfile(myCgVertexProfile);
checkForCgError("enabling vertex profile");
/* Rendering code verbatim from Chapter 1, Section 2.4.1 "Rendering
* a Triangle with OpenGL" (page 57). */
Gl.glBegin(Gl.GL_TRIANGLES);
Gl.glVertex2f(-0.8f, 0.8f);
Gl.glVertex2f(0.8f, 0.8f);
Gl.glVertex2f(0.0f, -0.8f);
Gl.glEnd();
CgGl.cgGLDisableProfile(myCgVertexProfile);
checkForCgError("disabling vertex profile");
Glut.glutSwapBuffers();
}
private void InitCg()
{
m_CG_vertexProfile = CgGl.cgGLGetLatestProfile(CgGl.CG_GL_VERTEX);
CgGl.cgGLSetOptimalOptions(m_CG_vertexProfile);
checkForCgError("selecting vertex profile");
m_CG_fragmentProfile = CgGl.cgGLGetLatestProfile(CgGl.CG_GL_FRAGMENT);
CgGl.cgGLSetOptimalOptions(m_CG_fragmentProfile);
checkForCgError("selecting fragment profile");
// Create the context...
m_CGcontext = Cg.cgCreateContext();
checkForCgError("creating context");
string cas = Application.StartupPath;
//load pass1
m_CGp_vertexProgramPass1 = Cg.cgCreateProgramFromFile(m_CGcontext,
Cg.CG_SOURCE,
cas + "/SpriteVertexProgram.cg",
m_CG_vertexProfile,
"main_pass1",
null);
checkForCgError("creating vertex program pass1 from file SpriteVertexProgram.cg");
CgGl.cgGLLoadProgram(m_CGp_vertexProgramPass1);
checkForCgError("loading vertex program");
m_CGp_fragmentProgramPass1 = Cg.cgCreateProgramFromFile(m_CGcontext,
Cg.CG_SOURCE,
cas + "/SpriteFragmentProgram.cg",
m_CG_fragmentProfile,
"main_pass1",
null);
checkForCgError("creating fragment program from file SpriteFragmentProgram.cg");
CgGl.cgGLLoadProgram(m_CGp_fragmentProgramPass1);
checkForCgError("loading fragment program");
//load pass2
m_CGp_vertexProgramPass2 = Cg.cgCreateProgramFromFile(m_CGcontext,
Cg.CG_SOURCE,
cas + "/SpriteVertexProgram.cg",
m_CG_vertexProfile,
"main_pass2",
null);
checkForCgError("creating vertex program pass2 from file SpriteVertexProgram.cg");
CgGl.cgGLLoadProgram(m_CGp_vertexProgramPass2);
checkForCgError("loading vertex program");
m_CGp_fragmentProgramPass2 = Cg.cgCreateProgramFromFile(m_CGcontext,
Cg.CG_SOURCE,
cas + "/SpriteFragmentProgram.cg",
m_CG_fragmentProfile,
"main_pass2",
null);
checkForCgError("creating fragment program from file SpriteFragmentProgram.cg");
CgGl.cgGLLoadProgram(m_CGp_fragmentProgramPass2);
checkForCgError("loading fragment program");
//load pass3
m_CGp_vertexProgramPass3 = Cg.cgCreateProgramFromFile(m_CGcontext,
Cg.CG_SOURCE,
cas + "/SpriteVertexProgram.cg",
m_CG_vertexProfile,
"main_pass3",
null);
checkForCgError("creating vertex program pass3 from file SpriteVertexProgram.cg");
CgGl.cgGLLoadProgram(m_CGp_vertexProgramPass3);
checkForCgError("loading vertex program");
m_CGp_fragmentProgramPass3 = Cg.cgCreateProgramFromFile(m_CGcontext,
Cg.CG_SOURCE,
cas + "/SpriteFragmentProgram.cg",
m_CG_fragmentProfile,
"main_pass3",
null);
checkForCgError("creating fragment program from file SpriteFragmentProgram.cg");
CgGl.cgGLLoadProgram(m_CGp_fragmentProgramPass3);
checkForCgError("loading fragment pass3 program");
//pass1 parameters
m_CGparam_modelViewProjPass1 = Cg.cgGetNamedParameter(m_CGp_vertexProgramPass1, "modelViewProj");
checkForCgError("getting modal view proj");
m_CGparam_modelViewITPass1 = Cg.cgGetNamedParameter(m_CGp_vertexProgramPass1, "modelViewIT");
checkForCgError("getting modal view IT");
m_CGparam_modelViewPass1 = Cg.cgGetNamedParameter(m_CGp_vertexProgramPass1, "modelView");
checkForCgError("getting modal view");
m_CGparam_eyePositionPass1 = Cg.cgGetNamedParameter(m_CGp_vertexProgramPass1, "eyePos");
checkForCgError("getting eyePos");
m_CGparam_sizeFactorPass1 = Cg.cgGetNamedParameter(m_CGp_vertexProgramPass1, "sizeFactor");
checkForCgError("getting sizeFactor");
m_CGparam_zoffsetPass1 = Cg.cgGetNamedParameter(m_CGp_vertexProgramPass1, "zoffset");
checkForCgError("getting zoffset");
CgGl.cgGLSetParameter1f(m_CGparam_zoffsetPass1, 0.003f);
checkForCgError("setting zoffset");
m_CGparam_splatRotationCutoffDistPass1 = Cg.cgGetNamedParameter(m_CGp_vertexProgramPass1, "splatRotationCutoffDist");
checkForCgError("getting splatRotationCutoffDist");
CgGl.cgGLSetParameter1f(m_CGparam_zoffsetPass1, 0.003f);
checkForCgError("setting zoffset");
m_CGparam_farcullPass1 = Cg.cgGetNamedParameter(m_CGp_vertexProgramPass1, "farcull");
checkForCgError("getting farcull");
CgGl.cgGLSetParameter1f(m_CGparam_farcullPass1, WorldView.farCull);
checkForCgError("setting farcull");
m_CGparam_viewParamsPass1 = Cg.cgGetNamedParameter(m_CGp_vertexProgramPass1, "viewParams");
checkForCgError("getting viewParams");
//pass2 parameters
m_CGparam_modelViewProjPass2 = Cg.cgGetNamedParameter(m_CGp_vertexProgramPass2, "modelViewProj");
checkForCgError("getting modal view proj2");
m_CGparam_modelViewITPass2 = Cg.cgGetNamedParameter(m_CGp_vertexProgramPass2, "modelViewIT");
checkForCgError("getting modal view IT2");
m_CGparam_modelViewPass2 = Cg.cgGetNamedParameter(m_CGp_vertexProgramPass2, "modelView");
checkForCgError("getting modal view2");
m_CGparam_eyePositionPass2 = Cg.cgGetNamedParameter(m_CGp_vertexProgramPass2, "eyePos");
checkForCgError("getting eyePos2");
m_CGparam_sizeFactorPass2 = Cg.cgGetNamedParameter(m_CGp_vertexProgramPass2, "sizeFactor");
checkForCgError("getting sizeFactor2");
m_CGparam_splatRotationCutoffDistPass2 = Cg.cgGetNamedParameter(m_CGp_vertexProgramPass2, "splatRotationCutoffDist");
checkForCgError("getting splatRotationCutoffDist");
CgGl.cgGLSetParameter1f(m_CGparam_sizeFactorPass1, 1f);
checkForCgError("setting sizeFactor");
CgGl.cgGLSetParameter1f(m_CGparam_sizeFactorPass2, 1f);
checkForCgError("setting sizeFactor2");
m_CGparam_farcullPass2 = Cg.cgGetNamedParameter(m_CGp_vertexProgramPass2, "farcull");
checkForCgError("getting farcull");
CgGl.cgGLSetParameter1f(m_CGparam_farcullPass2, WorldView.farCull);
checkForCgError("setting farcull");
m_CGparam_viewParamsPass2 = Cg.cgGetNamedParameter(m_CGp_vertexProgramPass2, "viewParams");
checkForCgError("getting viewParams");
}
public static void Run()
{
string filePath = Path.Combine("..", "..");
string fileDirectory = "Data";
string vertexFileName = "C3E4v_twist.cg";
string fragmentFileName = "C2E2f_passthru.cg";
if (File.Exists(vertexFileName))
{
filePath = "";
fileDirectory = "";
}
else if (File.Exists(Path.Combine(fileDirectory, vertexFileName)))
{
filePath = "";
}
string myVertexProgramFileName = Path.Combine(Path.Combine(filePath, fileDirectory), vertexFileName);
string myFragmentProgramFileName = Path.Combine(Path.Combine(filePath, fileDirectory), fragmentFileName);
// Callback Delegates
keyboardDelegate += keyboard;
menuDelegate += menu;
idleDelegate += idle;
Glut.glutInitWindowSize(400, 400);
Glut.glutInitDisplayMode(Glut.GLUT_RGB | Glut.GLUT_DOUBLE | Glut.GLUT_DEPTH);
Glut.glutInit();
Glut.glutCreateWindow(myProgramName);
Glut.glutDisplayFunc(display);
Glut.glutKeyboardFunc(keyboardDelegate);
Gl.glClearColor(1.0f, 1.0f, 1.0f, 1.0f); /* White background */
myCgContext = Cg.cgCreateContext();
checkForCgError("creating context");
myCgVertexProfile = CgGl.cgGLGetLatestProfile(CgGl.CG_GL_VERTEX);
CgGl.cgGLSetOptimalOptions(myCgVertexProfile);
checkForCgError("selecting vertex profile");
myCgVertexProgram =
Cg.cgCreateProgramFromFile(
myCgContext, /* Cg runtime context */
Cg.CG_SOURCE, /* Program in human-readable form */
myVertexProgramFileName, /* Name of file containing program */
myCgVertexProfile, /* Profile: OpenGL ARB vertex program */
myVertexProgramName, /* Entry function name */
null); /* No extra compiler options */
checkForCgError("creating vertex program from file");
CgGl.cgGLLoadProgram(myCgVertexProgram);
checkForCgError("loading vertex program");
myCgVertexParam_twisting =
Cg.cgGetNamedParameter(myCgVertexProgram, "twisting");
checkForCgError("could not get twisting parameter");
myCgFragmentProfile = CgGl.cgGLGetLatestProfile(CgGl.CG_GL_FRAGMENT);
CgGl.cgGLSetOptimalOptions(myCgFragmentProfile);
checkForCgError("selecting fragment profile");
myCgFragmentProgram =
Cg.cgCreateProgramFromFile(
myCgContext, /* Cg runtime context */
Cg.CG_SOURCE, /* Program in human-readable form */
myFragmentProgramFileName, /* Name of file containing program */
myCgFragmentProfile, /* Profile: OpenGL ARB vertex program */
myFragmentProgramName, /* Entry function name */
null); /* No extra compiler options */
checkForCgError("creating fragment program from file");
CgGl.cgGLLoadProgram(myCgFragmentProgram);
checkForCgError("loading fragment program");
/* No uniform fragment program parameters expected. */
Glut.glutCreateMenu(menuDelegate);
Glut.glutAddMenuEntry("[ ] Animate", ' ');
Glut.glutAddMenuEntry("[w] Wireframe", 'w');
Glut.glutAttachMenu(Glut.GLUT_RIGHT_BUTTON);
// Change Animation to true, so that it starts with action ;-)
keyboard((byte)' ', 0, 0);
Glut.glutMainLoop();
}
public static void Run()
{
string filePath = Path.Combine("..", "..");
string fileDirectory = "Data";
string vertexFileName = "C6E1v_bulge.cg";
if (File.Exists(vertexFileName))
{
filePath = "";
fileDirectory = "";
}
else if (File.Exists(Path.Combine(fileDirectory, vertexFileName)))
{
filePath = "";
}
string myVertexProgramFileName = Path.Combine(Path.Combine(filePath, fileDirectory), vertexFileName);
// Callback Delegates
keyboardDelegate += keyboard;
menuDelegate += menu;
idleDelegate += idle;
reshapeDelegate += reshape;
Glut.glutInitWindowSize(400, 400);
Glut.glutInitDisplayMode(Glut.GLUT_RGB | Glut.GLUT_DOUBLE | Glut.GLUT_DEPTH);
Glut.glutInit();
Glut.glutCreateWindow(myProgramName);
Glut.glutDisplayFunc(display);
Glut.glutKeyboardFunc(keyboardDelegate);
Glut.glutReshapeFunc(reshapeDelegate);
Gl.glClearColor(0.1f, 0.1f, 0.5f, 0f); /* Gray background. */
Gl.glEnable(Gl.GL_DEPTH_TEST); /* Hidden surface removal. */
myCgContext = Cg.cgCreateContext();
checkForCgError("creating context");
myCgVertexProfile = CgGl.cgGLGetLatestProfile(CgGl.CG_GL_VERTEX);
CgGl.cgGLSetOptimalOptions(myCgVertexProfile);
checkForCgError("selecting vertex profile");
myCgVertexProgram =
Cg.cgCreateProgramFromFile(
myCgContext, /* Cg runtime context */
Cg.CG_SOURCE, /* Program in human-readable form */
myVertexProgramFileName, /* Name of file containing program */
myCgVertexProfile, /* Profile: OpenGL ARB vertex program */
myVertexProgramName, /* Entry function name */
null); /* No extra compiler options */
checkForCgError("creating vertex program from file");
CgGl.cgGLLoadProgram(myCgVertexProgram);
checkForCgError("loading vertex program");
GET_PARAM("modelViewProj");
GET_PARAM("time");
GET_PARAM("frequency");
GET_PARAM("scaleFactor");
GET_PARAM("Kd");
GET_PARAM("shininess");
GET_PARAM("eyePosition");
GET_PARAM("lightPosition");
GET_PARAM("lightColor");
/* Set light source color parameters once. */
Cg.cgSetParameter3fv(myCgVertexParam_lightColor, out myLightColor[0]);
Cg.cgSetParameter1f(myCgVertexParam_scaleFactor, 0.3f);
Cg.cgSetParameter1f(myCgVertexParam_frequency, 2.4f);
Cg.cgSetParameter1f(myCgVertexParam_shininess, 35f);
myCgFragmentProfile = CgGl.cgGLGetLatestProfile(CgGl.CG_GL_FRAGMENT);
CgGl.cgGLSetOptimalOptions(myCgFragmentProfile);
checkForCgError("selecting fragment profile");
/* Specify fragment program with a string. */
myCgFragmentProgram =
Cg.cgCreateProgram(
myCgContext, /* Cg runtime context */
Cg.CG_SOURCE, /* Program in human-readable form */
"float4 main(float4 c : COLOR) : COLOR { return c; }",
myCgFragmentProfile, /* Profile: latest fragment profile */
"main", /* Entry function name */
null); /* No extra commyPiler options */
checkForCgError("creating fragment program from string");
CgGl.cgGLLoadProgram(myCgFragmentProgram);
checkForCgError("loading fragment program");
/* Specify vertex program for rendering the light source with a
* string. */
myCgLightVertexProgram =
Cg.cgCreateProgram(
myCgContext, /* Cg runtime context */
Cg.CG_SOURCE, /* Program in human-readable form */
"void main(inout float4 p : POSITION, " +
"uniform float4x4 modelViewProj, " +
"out float4 c : COLOR) " +
"{ p = mul(modelViewProj, p); c = float4(1,1,0,1); }",
myCgVertexProfile, /* Profile: latest fragment profile */
"main", /* Entry function name */
null); /* No extra commyPiler options */
checkForCgError("creating light vertex program from string");
CgGl.cgGLLoadProgram(myCgLightVertexProgram);
checkForCgError("loading light vertex program");
myCgLightVertexParam_modelViewProj =
Cg.cgGetNamedParameter(myCgLightVertexProgram, "modelViewProj");
checkForCgError("could not get modelViewProj parameter");
Glut.glutCreateMenu(menu);
Glut.glutAddMenuEntry("[ ] Animate", ' ');
Glut.glutAttachMenu(Glut.GLUT_RIGHT_BUTTON);
// Change Animation to true, so that it starts with action ;-)
keyboard((byte)' ', 0, 0);
Glut.glutMainLoop();
}
/// <summary>
/// Unbinds a program from a Cg profile</summary>
/// <param name="profile">ID for profile we want to unbind the Cg program with</param>
public static void UnBindProgram(string profile)
{
CgGl.cgGLUnbindProgram(m_cg_profiles[profile]);
// System.Console.WriteLine(" Cg UnBindProgram ," + m_cg_context + "," + m_cg_program_counter + " profile=" + profile);
}
/// <summary>
/// Disables a Cg profile</summary>
/// <param name="profile">ID for profile we want to disable</param>
public static void DisableProfile(string profile)
{
CgGl.cgGLDisableProfile(m_cg_profiles[profile]);
}
/// <summary>
/// Binds a Cg program</summary>
/// <param name="id">ID for the Cg program we want to bind</param>
public static void BindProgram(string id)
{
CgGl.cgGLBindProgram(m_cg_programs[id]);
// System.Console.WriteLine(" Cg BindProgram ," + m_cg_context + "," + m_cg_program_counter + " id=" + id);
}
static void display()
{
/* World-space positions for light and eye. */
float[] eyePosition = { 0, 0, 8, 1 };
float[] lightPosition = { 5 * (float)Math.Sin(myLightAngle),
1.5f,
5 * (float)Math.Cos(myLightAngle), 1 };
float[] translateMatrix = new float[16], rotateMatrix = new float[16],
modelMatrix = new float[16], invModelMatrix = new float[16], viewMatrix = new float[16],
modelViewMatrix = new float[16], modelViewProjMatrix = new float[16];
float[] objSpaceEyePosition = new float[4], objSpaceLightPosition = new float[4];
Cg.cgSetParameter1f(myCgVertexParam_time, myTime);
buildLookAtMatrix(eyePosition[0], eyePosition[1], eyePosition[2],
0, 0, 0,
0, 1, 0,
ref viewMatrix);
Gl.glClear(Gl.GL_COLOR_BUFFER_BIT | Gl.GL_DEPTH_BUFFER_BIT);
CgGl.cgGLEnableProfile(myCgVertexProfile);
checkForCgError("enabling vertex profile");
CgGl.cgGLEnableProfile(myCgFragmentProfile);
checkForCgError("enabling fragment profile");
CgGl.cgGLBindProgram(myCgVertexProgram);
checkForCgError("binding vertex program");
CgGl.cgGLBindProgram(myCgFragmentProgram);
checkForCgError("binding fragment program");
/*** Render green solid bulging sphere ***/
/* modelView = rotateMatrix * translateMatrix */
makeRotateMatrix(70f, 1f, 1f, 1f, ref rotateMatrix);
makeTranslateMatrix(2.2f, 1f, 0.2f, ref translateMatrix);
multMatrix(ref modelMatrix, translateMatrix, rotateMatrix);
/* invModelMatrix = inverse(modelMatrix) */
invertMatrix(ref invModelMatrix, ref modelMatrix);
/* Transform world-space eye and light positions to sphere's object-space. */
transform(ref objSpaceEyePosition, invModelMatrix, eyePosition);
Cg.cgSetParameter3fv(myCgVertexParam_eyePosition, out objSpaceEyePosition[0]);
transform(ref objSpaceLightPosition, invModelMatrix, lightPosition);
Cg.cgSetParameter3fv(myCgVertexParam_lightPosition, out objSpaceLightPosition[0]);
/* modelViewMatrix = viewMatrix * modelMatrix */
multMatrix(ref modelViewMatrix, viewMatrix, modelMatrix);
/* modelViewProj = projectionMatrix * modelViewMatrix */
multMatrix(ref modelViewProjMatrix, myProjectionMatrix, modelViewMatrix);
/* Set matrix parameter with row-major matrix. */
Cg.cgSetMatrixParameterfr(myCgVertexParam_modelViewProj, out modelViewProjMatrix[0]);
Cg.cgSetParameter4f(myCgVertexParam_Kd, 0.1f, 0.7f, 0.1f, 1f); /* Green */
Glut.glutSolidSphere(1.0, 40, 40);
/*** Render red solid bulging torus ***/
/* modelView = viewMatrix * translateMatrix */
makeTranslateMatrix(-2f, -1.5f, 0f, ref translateMatrix);
makeRotateMatrix(55, 1, 0, 0, ref rotateMatrix);
multMatrix(ref modelMatrix, translateMatrix, rotateMatrix);
/* invModelMatrix = inverse(modelMatrix) */
invertMatrix(ref invModelMatrix, ref modelMatrix);
/* Transform world-space eye and light positions to sphere's object-space. */
transform(ref objSpaceEyePosition, invModelMatrix, eyePosition);
Cg.cgSetParameter3fv(myCgVertexParam_eyePosition, out objSpaceEyePosition[0]);
transform(ref objSpaceLightPosition, invModelMatrix, lightPosition);
Cg.cgSetParameter3fv(myCgVertexParam_lightPosition, out objSpaceLightPosition[0]);
/* modelViewMatrix = viewMatrix * modelMatrix */
multMatrix(ref modelViewMatrix, viewMatrix, modelMatrix);
/* modelViewProj = projectionMatrix * modelViewMatrix */
multMatrix(ref modelViewProjMatrix, myProjectionMatrix, modelViewMatrix);
/* Set matrix parameter with row-major matrix. */
Cg.cgSetMatrixParameterfr(myCgVertexParam_modelViewProj, out modelViewProjMatrix[0]);
Cg.cgSetParameter4f(myCgVertexParam_Kd, 0.8f, 0.1f, 0.1f, 1f); /* Red */
Glut.glutSolidTorus(0.15, 1.7, 40, 40);
/*** Render light as emissive yellow ball ***/
CgGl.cgGLBindProgram(myCgLightVertexProgram);
checkForCgError("binding light vertex program");
/* modelView = translateMatrix */
makeTranslateMatrix(lightPosition[0], lightPosition[1], lightPosition[2],
ref modelMatrix);
/* modelViewMatrix = viewMatrix * modelMatrix */
multMatrix(ref modelViewMatrix, viewMatrix, modelMatrix);
/* modelViewProj = projectionMatrix * modelViewMatrix */
multMatrix(ref modelViewProjMatrix, myProjectionMatrix, modelViewMatrix);
/* Set matrix parameter with row-major matrix. */
Cg.cgSetMatrixParameterfr(myCgLightVertexParam_modelViewProj,
out modelViewProjMatrix[0]);
Glut.glutSolidSphere(0.1, 12, 12);
CgGl.cgGLDisableProfile(myCgVertexProfile);
checkForCgError("disabling vertex profile");
CgGl.cgGLDisableProfile(myCgFragmentProfile);
checkForCgError("disabling fragment profile");
Glut.glutSwapBuffers();
}
