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mutter/clutter/cogl/cogl.h
Matthew Allum d83442476f 2008-02-01 Matthew Allum <mallum@openedhand.com> 
* clutter/cogl/cogl.h:
        * clutter/cogl/gl/cogl.c:
        * clutter/cogl/gles/cogl.c:
       Disable the depth test and buffer as has some strange side
       effects, mainly on x/y axis rotation with multiple layers at
       same depth (eg rotating text on a bg has very strange
       effect). Seems no clean 100% effective way to fix without other
       odd issues.. So for now move to application to handle and add
       cogl_enable_depth_test() as for custom actors (i.e groups) to
       enable if need be.
2008-02-01 18:14:54 +00:00

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/*
* Clutter COGL
*
* A basic GL/GLES Abstraction/Utility Layer
*
* Authored By Matthew Allum <mallum@openedhand.com>
*
* Copyright (C) 2007 OpenedHand
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* COGL
* ====
*
* 'cogl' is a very simple abstraction layer which wraps GL and GLES.
*
*
* !!!! DO NOT USE THIS API YET OUTSIDE OF CLUTTER CORE !!!!
* THE API WILL FLUCTUATE WILDLY
*
* TODO:
* - Use ClutterReal for fixed/float params.
* - Add Perspective/viewport setup
* - Add Features..
*/
#ifndef __COGL_H__
#define __COGL_H__
#include <glib.h>
#include <clutter/clutter-color.h>
#include <clutter/clutter-feature.h>
#include <clutter/clutter-fixed.h>
#include <clutter/clutter-types.h>
#include "cogl-defines.h"
G_BEGIN_DECLS
#define CGL_ENABLE_BLEND (1<<1)
#define CGL_ENABLE_TEXTURE_2D (1<<2)
#define CGL_ENABLE_ALPHA_TEST (1<<3)
#define CGL_ENABLE_TEXTURE_RECT (1<<4)
typedef void (*CoglFuncPtr) (void);
CoglFuncPtr
cogl_get_proc_address (const gchar* name);
gboolean
cogl_check_extension (const gchar *name, const gchar *ext);
void
cogl_perspective (ClutterFixed fovy,
ClutterFixed aspect,
ClutterFixed zNear,
ClutterFixed zFar);
void
cogl_setup_viewport (guint width,
guint height,
ClutterFixed fovy,
ClutterFixed aspect,
ClutterFixed z_near,
ClutterFixed z_far);
void
cogl_paint_init (const ClutterColor *color);
void
cogl_push_matrix (void);
void
cogl_pop_matrix (void);
void
cogl_scale (ClutterFixed x, ClutterFixed z);
void
cogl_translatex (ClutterFixed x, ClutterFixed y, ClutterFixed z);
void
cogl_translate (gint x, gint y, gint z);
void
cogl_rotatex (ClutterFixed angle, gint x, gint y, gint z);
void
cogl_rotate (gint angle, gint x, gint y, gint z);
void
cogl_color (const ClutterColor *color);
void
cogl_clip_set (ClutterFixed x_offset,
ClutterFixed y_offset,
ClutterFixed width,
ClutterFixed height);
void
cogl_clip_unset (void);
void
cogl_enable (gulong flags);
void
cogl_enable_depth_test (gboolean setting);
gboolean
cogl_texture_can_size (COGLenum target,
COGLenum pixel_format,
COGLenum pixel_type,
int width,
int height);
void
cogl_texture_quad (gint x1,
gint x2,
gint y1,
gint y2,
ClutterFixed tx1,
ClutterFixed ty1,
ClutterFixed tx2,
ClutterFixed ty2);
void
cogl_textures_create (guint num, COGLuint *textures);
void
cogl_textures_destroy (guint num, const COGLuint *textures);
void
cogl_texture_bind (COGLenum target, COGLuint texture);
void
cogl_texture_set_alignment (COGLenum target,
guint alignment,
guint row_length);
void
cogl_texture_set_filters (COGLenum target,
COGLenum min_filter,
COGLenum max_filter);
void
cogl_texture_set_wrap (COGLenum target,
COGLenum wrap_s,
COGLenum wrap_t);
void
cogl_texture_image_2d (COGLenum target,
COGLint internal_format,
gint width,
gint height,
COGLenum format,
COGLenum type,
const guchar* pixels);
void
cogl_texture_sub_image_2d (COGLenum target,
gint xoff,
gint yoff,
gint width,
gint height,
COGLenum format,
COGLenum type,
const guchar* pixels);
void
cogl_rectangle (gint x, gint y, guint width, guint height);
void
cogl_trapezoid (gint y1,
gint x11,
gint x21,
gint y2,
gint x12,
gint x22);
void
cogl_alpha_func (COGLenum func,
ClutterFixed ref);
ClutterFeatureFlags
cogl_get_features ();
void
cogl_get_modelview_matrix (ClutterFixed m[16]);
void
cogl_get_projection_matrix (ClutterFixed m[16]);
void
cogl_get_viewport (ClutterFixed v[4]);
void
cogl_get_bitmasks (gint *red, gint *green, gint *blue, gint *alpha);
void
cogl_fog_set (const ClutterColor *fog_color,
ClutterFixed density,
ClutterFixed z_near,
ClutterFixed z_far);
COGLhandle
cogl_create_shader (COGLenum shaderType);
void
cogl_shader_destroy (COGLhandle handle);
void
cogl_shader_source (COGLhandle shader,
const gchar *source);
void
cogl_shader_compile (COGLhandle shader_handle);
void
cogl_shader_get_info_log (COGLhandle handle,
guint size,
gchar *buffer);
void
cogl_shader_get_parameteriv (COGLhandle handle,
COGLenum pname,
COGLint *dest);
COGLhandle
cogl_create_program (void);
void
cogl_program_destroy (COGLhandle handle);
void
cogl_program_attach_shader (COGLhandle program_handle,
COGLhandle shader_handle);
/* 0 to use none */
void
cogl_program_link (COGLhandle program_handle);
void
cogl_program_use (COGLhandle program_handle);
COGLint
cogl_program_get_uniform_location (COGLhandle program_int,
const gchar *uniform_name);
void
cogl_program_uniform_1f (COGLint uniform_no,
gfloat value);
/* Offscreen - FBO support */
COGLuint
cogl_offscreen_create (COGLuint target_texture);
void
cogl_offscreen_destroy (COGLuint offscreen_handle);
void
cogl_offscreen_redirect_start (COGLuint offscreen_handle,
gint width,
gint height);
void
cogl_offscreen_redirect_end (COGLuint offscreen_handle,
gint width,
gint height);
G_END_DECLS
#endif /* __COGL_H__ */
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