texture in OpenGL ES
Author
Hi!I've a problem with texture! I try to add a texture in my project but i have this error:
error C2664: 'NewL' : cannot convert parameter 3 from 'class CSimpleCubeAppUi' to 'class MImageHandlerCallback &'
SimpleCube is the name of my project! here is the code:
void CSimpleCubeAppUi::LoadTexturesL()
{
_LIT(KTex1Name, "prova.jpg" );
iTex1FullName.Append( TEXTUREPATH );
iTex1FullName.Append( KTex1Name );
// Create bitmaps for textures
iTex1 = new(ELeave) CFbsBitmap();
iTex1->Create( TSize(256,256), EColor16M );
// Create a image converter library utility for loading the NASA texture
iFs.Connect();
iBmapUtil = CImageHandler::NewL( iTex1, iFs, *this );
// Set the status and start loading
iTexID = TEX;
iBmapUtil->LoadFileL( iTex1FullName, 0 );
}
Thanks
it seems the last parameter to NewL must be some callback-handler. you're just giving it a reference to your class CSimpleCubeAppUi. perhaps CSimpleCubeAppUi should inherit from MImageHandlerCallback?
Author
Thanks for your interest...I don't know exactly how it works, because I try to modify the example found in forum.nokia.com. The example works correctly, I've just paste the code for load the texture in my project!
I'm interesting on OpenGL ES because I'm an italian student of computer engineering and I'm doing my thesis on OpenGL ES...thanks for your help
I'm interesting on OpenGL ES because I'm an italian student of computer engineering and I'm doing my thesis on OpenGL ES...thanks for your help
Like Kusma said: check if you need to inherit any interface classes (like MImageHandlerCallback). If you already have an example it should be easy to look up...
Author
Yes I've the example of nokia forum; I've add to my code everything like in example but it don't run for the error in function LoadTextureL of AppUi class!now my code is equal to the example, I've also add the library in project's setting!
Hi,
maybe your problem isn't in that function...
I have a LoadTexturesL function that looks like this:
which looks exactly the same as yours, so is there anything else from the nokia example that you changed?
I haven't come across any error like that when I was trying to figure out textures, my problem ended up being that I needed to change:
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST);
to
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
VERY frustrating!
maybe your problem isn't in that function...
I have a LoadTexturesL function that looks like this:
void CGame01AppUi::LoadTexturesL(){ _LIT(KTex1Name, "grass.bmp" ); iTex1FullName.Append( TEXTUREPATH ); iTex1FullName.Append( KTex1Name ); iTex1 = new(ELeave) CFbsBitmap(); iTex1->Create( TSize(256,256), EColor16M ); iFs.Connect(); iBmapUtil = CImageHandler::NewL( iTex1, iFs, *this ); iTexID = TEX_GRASS; iBmapUtil->LoadFileL( iTex1FullName, 0 );}which looks exactly the same as yours, so is there anything else from the nokia example that you changed?
I haven't come across any error like that when I was trying to figure out textures, my problem ended up being that I needed to change:
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST);
to
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
VERY frustrating!
Author
Thanks Miranda!!!
I don't understand why this error...for load the texture I've include the file utils.h e utils.ccp like in the example of the nokia; in my project I've a quad not a cube, this is the only difference!can I send you my project?
Thanks you very much Miranda, you're the only person I found who can help me!
I don't understand why this error...for load the texture I've include the file utils.h e utils.ccp like in the example of the nokia; in my project I've a quad not a cube, this is the only difference!can I send you my project?
Thanks you very much Miranda, you're the only person I found who can help me!
Author
I found a mistake in my AppUi.h, I've corrected it but now I have some undeclared identifier like LoadFile, DataAddres...can you help me?!?
This i the code of my AppUi.cpp
And this of my AppUi.h:
This i the code of my AppUi.cpp
#include "SimpleCubeAppUi.h"#include "SimpleCubeContainer.h" #include <SimpleCube.rsg>#include "SimpleCube.hrh"#include <eikmenup.h>#include <avkon.hrh>#define TEX 1#if defined( __WINS__ ) // Path for emulator build. // We assume that textures are located under z:\pictures. _LIT(KTexPath, "d:\\pictures\\"); #define TEXTUREPATH KTexPath#else // Path for HW builds. // We assume that textures are located in the application's root directory #define TEXTUREPATH Utils::GetAppRootDirectoryL()#endif// ================= MEMBER FUNCTIONS =======================//// ----------------------------------------------------------// CSimpleCubeAppUi::ConstructL()// // ----------------------------------------------------------//void CSimpleCubeAppUi::ConstructL() { BaseConstructL(); iAppContainer = new (ELeave) CSimpleCubeContainer; iAppContainer->SetMopParent( this ); iAppContainer->SetAppUiPointer(this); iAppContainer->ConstructL( ClientRect() ); AddToStackL( iAppContainer ); iTexLoaded = 0; }// ----------------------------------------------------// CSimpleCubeAppUi::~CSimpleCubeAppUi()// Destructor// Frees reserved resources// ----------------------------------------------------//CSimpleCubeAppUi::~CSimpleCubeAppUi() { if(iBmapUtil) { delete iBmapUtil; } iFs.Close(); if (iAppContainer) { RemoveFromStack( iAppContainer ); delete iAppContainer; } }// ------------------------------------------------------------------------------// CSimpleCubeAppUi::DynInitMenuPaneL(TInt aResourceId,CEikMenuPane* aMenuPane)// This function is called by the EIKON framework just before it displays// a menu pane. Its default implementation is empty, and by overriding it,// the application can set the state of menu items dynamically according// to the state of application data.// ------------------------------------------------------------------------------//void CSimpleCubeAppUi::DynInitMenuPaneL( TInt /*aResourceId*/,CEikMenuPane* /*aMenuPane*/) { }// ----------------------------------------------------// CSimpleCubeAppUi::HandleKeyEventL(// const TKeyEvent& aKeyEvent,TEventCode /*aType*/)// takes care of key event handling// ----------------------------------------------------//TKeyResponse CSimpleCubeAppUi::HandleKeyEventL( const TKeyEvent& aKeyEvent,TEventCode aType){ //if ( aType == EEventKeyDown ) // { TUint scan = aKeyEvent.iScanCode; switch ( scan ) { case(EStdKeyUpArrow): iAppContainer->diry++; return EKeyWasConsumed; break; case(EStdKeyDownArrow): iAppContainer->diry--; return EKeyWasConsumed; break; case(EStdKeyLeftArrow): iAppContainer->dirx--; return EKeyWasConsumed; break; case(EStdKeyRightArrow): iAppContainer->dirx++; return EKeyWasConsumed; break; } //} }// ----------------------------------------------------// CSimpleCubeAppUi::HandleCommandL(TInt aCommand)// takes care of command handling// ----------------------------------------------------//void CSimpleCubeAppUi::HandleCommandL(TInt aCommand){ switch ( aCommand ) { case EAknSoftkeyBack: case EEikCmdExit: { Exit(); break; } case ESimpleCubeFlat: iAppContainer->iSimpleCube->ChangeShade(); break; case ESimpleCubeSmooth: iAppContainer->iSimpleCube->ChangeShadeSmooth(); break; default: break; }}void CSimpleCubeAppUi::LoadTexturesL(){ // Construct the full path names for the textures _LIT(KTex1Name, "prova.jpg" ); iTex1FullName.Append( TEXTUREPATH ); iTex1FullName.Append( KTex1Name ); // Create bitmaps for textures iTex1 = new(ELeave) CFbsBitmap(); iTex1->Create( TSize(256,256), EColor16M ); // Create a image converter library utility for loading the texture iFs.Connect(); iBmapUtil = CImageHandler::NewL( iTex1, iFs, *this ); // Set the status and start loading iTexID = TEX; iBmapUtil->LoadFileL( iTex1FullName, 0 );}void CSimpleCubeAppUi::ImageOperationCompleteL( TInt aError ){ _LIT(KTexError, "Tex load failed"); User::LeaveIfError( aError ); //texture loaded if( iTexID == TEX ) { /* The data in the iTex1/2 are in RGB order but is read in BGR order. So we have to switch the 1st or 3rd bytes. */ TUint8 *tex1 = (TUint8*)iTex1->DataAddress(); TUint8 t; for( TInt i = 0; i < 256*256; i++ ) { t = tex1[i*3]; tex1[i*3] = tex1[i*3+2]; tex1[i*3+2] = t; } // Initialize OpenGL ES now that the textures are loaded iAppContainer->iSimpleCube->AppInit(tex1); // The original bitmaps can now be deleted because the textures // are stored inside OpenGL ES now delete iTex1; iTex1 = NULL; // Set the texture loaded flag iTexLoaded = 1; // Start the container's iPeriodic iAppContainer->iPeriodic->Start( 100, 100, TCallBack( CSimpleCubeContainer::DrawCallBack, iAppContainer ) ); } // Invalid texture ID defined else { User::Panic( KTexError, 111 ); }}// End of File And this of my AppUi.h:
#ifndef SIMPLECUBEAPPUI_H#define SIMPLECUBEAPPUI_H// INCLUDES#include <eikapp.h>#include <eikdoc.h>#include <e32std.h>#include <coeccntx.h>#include <aknappui.h>#include <f32file.h> #include "SimpleCubeDocument.h"#include "utils.h" // Image loading utility// FORWARD DECLARATIONSclass CSimpleCubeContainer;// CLASS DECLARATION/*** Application UI class.* Provides support for the following features:* - EIKON control architecture*/class CSimpleCubeAppUi : public CAknAppUi, public MImageHandlerCallback { public: // Constructors and destructor /** * EPOC default constructor. */ void ConstructL(); /** * Destructor. */ virtual ~CSimpleCubeAppUi(); public: // New functions void LoadTexturesL(); private: // From MEikMenuObserver void DynInitMenuPaneL(TInt aResourceId,CEikMenuPane* aMenuPane); /** * From MImageHandlerCallback, call back for image loading * @param aError Error code for image conversion */ void ImageOperationCompleteL(TInt aError); private: /** * From CEikAppUi, takes care of command handling. * @param aCommand command to be handled */ void HandleCommandL(TInt aCommand); /** * From CEikAppUi, handles key events. * @param aKeyEvent Event to handled. * @param aType Type of the key event. * @return Response code (EKeyWasConsumed, EKeyWasNotConsumed). */ virtual TKeyResponse HandleKeyEventL( const TKeyEvent& aKeyEvent,TEventCode aType); public: // Data // Request status flag for texture loading TInt iTexLoaded; // File server session RFs iFs; // Bitmaps for texture loading CFbsBitmap* iTex1; private: //Data CSimpleCubeContainer* iAppContainer; // Instance of image loading class CImageHandler* iBmapUtil; // Filenames for textures TFileName iTex1FullName; // Current texture being loaded TInt iTexID; };#endif// End of FileThis topic is closed to new replies.
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