texture.h File Reference

#include <GL/gl.h>

Go to the source code of this file.

Enumerations
enum	TEXTURE {   TEX_ROCK, TEX_SNOW, TEX_GRASS, TEX_SAND,   TEX_N }
Functions
void	initTextures ()
void	deleteTextures ()
GLuint	texture (TEXTURE t)

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Enumeration Type Documentation

enum TEXTURE

Enumeration values: TEX_ROCK  TEX_SNOW  TEX_GRASS  TEX_SAND  TEX_N  Definition at line 6 of file texture.h. { TEX_ROCK, TEX_SNOW, TEX_GRASS, TEX_SAND, TEX_N };

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Function Documentation

void deleteTextures (   )

Definition at line 72 of file texture.cpp. References g_handles, and TEX_N. { // Release handles glDeleteTextures( TEX_N, g_handles ); }

void initTextures (   )

Definition at line 29 of file texture.cpp. References g_handles, g_strResourceDir, g_texfiles, g_textures, and TEX_N. Referenced by initGL(). { // Generate handles glGenTextures( TEX_N, g_handles ); // Load textures for (int i=0; i<TEX_N; i++) { // Generate filename char filename[200]; strcpy( filename, g_strResourceDir ); strcat( filename, g_texfiles[i] ); // Open and read file (binary mode) FILE *f = fopen( filename, "rb" ); if (f == NULL) { printf( "Error opening texture file %s\n.", g_texfiles[i] ); exit(1); } int n = fread( g_textures[i], 4, 256*256, f ); if (n != 256*256) { printf( "Error reading texture file %s: Only %i pixels read.\n", g_texfiles[i], n ); } else { printf( "Successfully loaded texture %s.\n", g_texfiles[i] ); } // Load texture image to OpenGL glBindTexture( GL_TEXTURE_2D, g_handles[i] ); // Build all mipmap stages gluBuild2DMipmaps( GL_TEXTURE_2D, GL_RGBA, 256, 256, GL_RGBA, GL_UNSIGNED_BYTE, g_textures[i] ); // Set filtering modes // LINEAR_MIPMAP_LINEAR specifies the highest quality mode, sometimes called // "trilinear filtering". Anisotropic is even better, but not yet officially supported in OpenGL. glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR ); glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR ); } }

GLuint texture (  TEXTURE  t  )

Definition at line 80 of file texture.cpp. References g_handles, and TEX_N. Referenced by drawHeightField(), and drawTorus(). { assert( t>=0 && t<TEX_N ); return g_handles[t]; }

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