problema cargando texturas en un cubo con opengl

[mancrevia]

Estoy intentando usar la libreria opengl para pponer una imgeb de fondo en un cubo y me sale verdad la imagen. el codigo es el suiguiente.


void Draw_Skybox(float x, float y, float z, float width, float height, float length)
{
// Center the Skybox around the given x,y,z position
x = x - width / 2;
y = y - height / 2;
z = z - length / 2;


// Draw Front side
glBindTexture(GL_TEXTURE_2D, SkyboxTexture[SKYFRONT]);
glBegin(GL_QUADS);


glTexCoord2f(1.0f, 0.0f); glVertex3f(x, y, z+length);
glTexCoord2f(1.0f, 1.0f); glVertex3f(x, y+height, z+length);
glTexCoord2f(0.0f, 1.0f); glVertex3f(x+width, y+height, z+length);
glTexCoord2f(0.0f, 0.0f); glVertex3f(x+width, y, z+length);
glEnd();

// Draw Back side
glBindTexture(GL_TEXTURE_2D, SkyboxTexture[SKYBACK]);
glBegin(GL_QUADS);
glTexCoord2f(1.0f, 0.0f); glVertex3f(x+width, y, z);
glTexCoord2f(1.0f, 1.0f); glVertex3f(x+width, y+height, z);
glTexCoord2f(0.0f, 1.0f); glVertex3f(x, y+height, z);
glTexCoord2f(0.0f, 0.0f); glVertex3f(x, y, z);
glEnd();

// Draw Left side
glBindTexture(GL_TEXTURE_2D, SkyboxTexture[SKYLEFT]);
glBegin(GL_QUADS);
glTexCoord2f(1.0f, 1.0f); glVertex3f(x, y+height, z);
glTexCoord2f(0.0f, 1.0f); glVertex3f(x, y+height, z+length);
glTexCoord2f(0.0f, 0.0f); glVertex3f(x, y, z+length);
glTexCoord2f(1.0f, 0.0f); glVertex3f(x, y, z);
glEnd();

// Draw Right side
glBindTexture(GL_TEXTURE_2D, SkyboxTexture[SKYRIGHT]);
glBegin(GL_QUADS);
glTexCoord2f(0.0f, 0.0f); glVertex3f(x+width, y, z);
glTexCoord2f(1.0f, 0.0f); glVertex3f(x+width, y, z+length);
glTexCoord2f(1.0f, 1.0f); glVertex3f(x+width, y+height, z+length);
glTexCoord2f(0.0f, 1.0f); glVertex3f(x+width, y+height, z);
glEnd();

// Draw Up side
glBindTexture(GL_TEXTURE_2D, SkyboxTexture[SKYUP]);
glBegin(GL_QUADS);
glTexCoord2f(0.0f, 0.0f); glVertex3f(x+width, y+height, z);
glTexCoord2f(1.0f, 0.0f); glVertex3f(x+width, y+height, z+length);
glTexCoord2f(1.0f, 1.0f); glVertex3f(x, y+height, z+length);
glTexCoord2f(0.0f, 1.0f); glVertex3f(x, y+height, z);
glEnd();

// Draw Down side
glBindTexture(GL_TEXTURE_2D, SkyboxTexture[SKYDOWN]);
glBegin(GL_QUADS);
glTexCoord2f(0.0f, 0.0f); glVertex3f(x, y, z);
glTexCoord2f(1.0f, 0.0f); glVertex3f(x, y, z+length);
glTexCoord2f(1.0f, 1.0f); glVertex3f(x+width, y, z+length);
glTexCoord2f(0.0f, 1.0f); glVertex3f(x+width, y, z);
glEnd();

}


el codigo anterior esta en la funcion main y esta son las funciones definidas

void JPEG_Skybox(UINT textureArray[], LPSTR strFileName, int ID)
{
if(!strFileName) return;

tImageJPG *pBitMap = Load_JPEG(strFileName);

if(pBitMap == NULL) exit(0);

glGenTextures(1, &textureArray[ID]);
glBindTexture(GL_TEXTURE_2D, textureArray[ID]);
gluBuild2DMipmaps(GL_TEXTURE_2D, 3, pBitMap->sizeX, pBitMap->sizeY, GL_RGB, GL_UNSIGNED_BYTE, pBitMap->data);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GL _CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL _CLAMP_TO_EDGE);

if (pBitMap)
{
if (pBitMap->data)
{
free(pBitMap->data);
}
free(pBitMap);
}
}
//NEW//////////////////NEW//////////////////NEW//////////////////NEW////////////////











void JPEG_Texture(UINT textureArray[], LPSTR strFileName, int ID)
{
if(!strFileName) return;

tImageJPG *pBitMap = Load_JPEG(strFileName);

if(pBitMap == NULL) exit(0);

glGenTextures(1, &textureArray[ID]);
glBindTexture(GL_TEXTURE_2D, textureArray[ID]);
gluBuild2DMipmaps(GL_TEXTURE_2D, 3, pBitMap->sizeX, pBitMap->sizeY, GL_RGB, GL_UNSIGNED_BYTE, pBitMap->data);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTE R,GL_LINEAR_MIPMAP_NEAREST);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTE R,GL_LINEAR_MIPMAP_LINEAR);

if (pBitMap)
{
if (pBitMap->data)
{
free(pBitMap->data);
}
free(pBitMap);
}
}





tImageJPG *Load_JPEG(const char *strfilename)
{
struct jpeg_decompress_struct cInfo;
tImageJPG *pImgData = NULL;
FILE *pFile;

if((pFile = fopen(strfilename, "rb")) == NULL)
{
MessageBox(hWnd, "Error loading jpg file.", "ERROR", MB_OK);
return NULL;
}

jpeg_error_mgr jerr;

cInfo.err = jpeg_std_error(&jerr);

jpeg_create_decompress(&cInfo);

jpeg_stdio_src(&cInfo, pFile);

pImgData = (tImageJPG*)malloc(sizeof(tImageJPG));

Decompress_JPEG(&cInfo, pImgData);

jpeg_destroy_decompress(&cInfo);

fclose(pFile);

return pImgData;
}


void Decompress_JPEG(jpeg_decompress_struct* cInfo, tImageJPG *pImgData)
{
jpeg_read_header(cInfo, TRUE);

jpeg_start_decompress(cInfo);

pImgData->rowSpan = cInfo->image_width * cInfo->num_components;
pImgData->sizeX = cInfo->image_width;
pImgData->sizeY = cInfo->image_height;

pImgData->data = new unsigned char[pImgData->rowSpan * pImgData->sizeY];

unsigned char** rowPtr = new unsigned char*[pImgData->sizeY];
for (int i = 0; i < pImgData->sizeY; i++)
rowPtr[i] = &(pImgData->data[i*pImgData->rowSpan]);

int rowsRead = cInfo->output_height-1;
while (cInfo->output_scanline < cInfo->output_height)
{
rowsRead -= jpeg_read_scanlines(cInfo, &rowPtr[rowsRead], cInfo->output_height - rowsRead);
}
delete [] rowPtr;

jpeg_finish_decompress(cInfo);
}


muxas gracia spor la ayuda

[blackwind]

que tal,

a simple vista, el codigo se ve casi bien, pero no veo que por ninguna parte tengas:

glEnable(GL_TEXTURE_2D);

Ese llamado es para habilitar el texture mapping, sin el, las texturas no se ven.

si ya lo incluiste, y de todas forams no aparece la textura, estaria bien que postearas TODO tu codigo (donde inicializas opengl, tu main, tu funcion de dibujo, etc...)

saludos,