texture.c File Reference

AllegroGL texture management. More...

#include <string.h>
#include "alleggl.h"
#include "allglint.h"
#include <allegro/internal/aintern.h>
#include <GL/glu.h>

Go to the source code of this file.

Defines

• #define PREFIX_I   "agl-tex INFO: "
• #define PREFIX_W   "agl-tex WARNING: "
• #define PREFIX_E   "agl-tex ERROR: "
• #define F(s)   case s: return #s

Functions

• char const * __allegro_gl_get_format_description (GLint format)
• int __allegro_gl_get_num_channels (GLenum format)
• GLint __allegro_gl_get_texture_format_ex (BITMAP *bmp, int flags)
• GLenum __allegro_gl_get_bitmap_type (BITMAP *bmp, int flags)
• GLenum __allegro_gl_get_bitmap_color_format (BITMAP *bmp, int flags)
• static int __allegro_gl_convert_flags (int flags)
• static int log2i (int n)
• BITMAP * __allegro_gl_munge_bitmap (int flags, BITMAP *bmp, int x, int y, int w, int h, GLint *type, GLint *format)
• static GLuint do_texture_upload (BITMAP *bmp, GLuint tex, GLint internal_format, GLint format, GLint type, int flags)
• GLenum allegro_gl_get_bitmap_type (BITMAP *bmp)
• GLenum allegro_gl_get_bitmap_color_format (BITMAP *bmp)

Texture routines

• GLint allegro_gl_get_texture_format (BITMAP *bmp)

  Returns the OpenGL internal texture format for this bitmap.
  

• GLint allegro_gl_set_texture_format (GLint format)

  Sets the color format you'd like OpenGL to use for its textures.
  

• int allegro_gl_use_mipmapping (int enable)

  Tell AllegroGL to use Mipmapping or not when generating textures via its functions.
  

• int allegro_gl_use_alpha_channel (int enable)

  Tell AllegroGL to use Alpha channel or not when generating textures via its functions.
  

• int allegro_gl_flip_texture (int enable)

  Tell AllegroGL to flip the texture vertically or not when generating textures via its functions, to conform to the usual OpenGL texture coordinate system (increasing upwards).
  

• int allegro_gl_check_texture_ex (int flags, BITMAP *bmp, GLint internal_format)

  Checks whether the specified bitmap is of the proper size for texturing.
  

• int allegro_gl_check_texture (BITMAP *bmp)

  Checks whether the specified bitmap is of the proper size for texturing.
  

• GLuint allegro_gl_make_texture_ex (int flags, BITMAP *bmp, GLint internal_format)

  Uploads an Allegro BITMAP to the GL driver as a texture.
  

• GLuint allegro_gl_make_texture (BITMAP *bmp)

  Uploads an Allegro BITMAP to the GL driver as a texture.
  

• GLuint allegro_gl_make_masked_texture (BITMAP *bmp)

  Uploads an Allegro BITMAP to the GL driver as a texture.
  

Variables

• static GLint allegro_gl_opengl_internal_texture_format = -1
• static int allegro_gl_use_mipmapping_for_textures = 0
• int __allegro_gl_use_alpha = FALSE
• int __allegro_gl_flip_texture = TRUE
• GLint __allegro_gl_texture_read_format [5]
• GLint __allegro_gl_texture_components [5]

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Detailed Description

AllegroGL texture management.

Definition in file texture.c.