int LoadTextures()
{
int iStatus = false;
memset(bmpData,0,sizeof(void *)*1); // Set The Pointer To NULL
if(bmpData[0] = LoadBMP("Data/muandi3.bmp", &bmpInfoHeader))
{
iStatus = true;
glGenTextures(1, &iTexture[0]); // Generate texture object
glBindTexture(GL_TEXTURE_2D, iTexture[0]); // Bind the texture
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
// Load the texture image
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, bmpInfoHeader.biWidth,
bmpInfoHeader.biHeight, 0, GL_RGB, GL_UNSIGNED_BYTE,
bmpData);
}
if (bmpData[0]) // If Texture Exists
{
free(bmpData[0]); // Free The Image Structure
}
return iStatus;
}
Unable to load the bmp texture
Author
The code runs fine. However the texture does not display. Here is the source. The variable used for texture datas are:
unsigned char* bmpData[1]; // The texture data
GLuint iTexture[1]; // The texture object
What is wrong with the code?
1.Try:
2.Are width and height powers of two?
EDIT: Check for errors!
3.If it doesn't work, post some texture-displaying code...
PM
Times change...
Excuse my poor english!
[edited by - PM on March 16, 2003 4:18:57 AM]
glTexImage2D(GL_TEXTURE_2D, 0, 3, bmpInfoHeader.biWidth, bmpInfoHeader.biHeight, 0, GL_RGB, GL_UNSIGNED_BYTE, bmpData); 2.Are width and height powers of two?
EDIT: Check for errors!
3.If it doesn't work, post some texture-displaying code...
PM
Times change...
Excuse my poor english!
[edited by - PM on March 16, 2003 4:18:57 AM]
Try changing bmpData to bmpData[0] in the glTexImage2D command.
Enigma
[edited by - Enigma on March 16, 2003 7:26:12 AM]
Enigma
[edited by - Enigma on March 16, 2003 7:26:12 AM]
Author
The .exe crashed with that modification. As I use a custom function to load BMP file without GLaux.
Here is the source:
Here is the source:
int LoadTextures(){ int iStatus = false; memset(bmpData[0],0,sizeof(void *)*1); // Set The Pointer To NULL if(bmpData[0] = LoadBMP("Data/muandi4.bmp", &bmpInfoHeader)) { iStatus = true; glGenTextures(1, &iTexture[0]); // Generate texture object glBindTexture(GL_TEXTURE_2D, iTexture[0]); // Bind the texture glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); // Load the texture image glTexImage2D(GL_TEXTURE_2D, 0, 3, bmpInfoHeader.biWidth, bmpInfoHeader.biHeight, 0, GL_RGB, GL_UNSIGNED_BYTE, bmpData[0]); } if (bmpData[0]) // If Texture Exists { free(bmpData[0]); // Free The Image Structure } return iStatus;}int InitGL(GLvoid) // All Setup For OpenGL Goes Here{ if(!LoadTextures()) // Return false if texture doesn''t load return false; glShadeModel(GL_SMOOTH); // Enable Smooth Shading glClearColor(0.0f, 0.0f, 0.0f, 1.0f); // Black Background glClearDepth(1.0f); // Depth Buffer Setup glEnable(GL_DEPTH_TEST); // Enables Depth Testing// glDepthFunc(GL_LEQUAL); // The Type Of Depth Testing To Do// glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); // Really Nice Perspective Calculations glEnable(GL_CULL_FACE); glFrontFace(GL_CCW); glEnable(GL_TEXTURE_2D); // Load our bitmap file return true; // Initialization Went OK}
What is the type of bmpData and where does it get initialised? From the look of your code it should be a GLubyte**. If it''s just a GLubyte* then change all the bmpData[0]''s to just bmpData. Also make sure your LoadBMP function is allocating a new GLubyte* and returning it.
Enigma
Enigma
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