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As part of an incremental process to have Cogl be a standalone project we
want to re-consider how we organise the Cogl source code.
Currently this is the structure I'm aiming for:
cogl/
cogl/
<put common source here>
winsys/
cogl-glx.c
cogl-wgl.c
driver/
gl/
gles/
os/ ?
utils/
cogl-fixed
cogl-matrix-stack?
cogl-journal?
cogl-primitives?
pango/
The new winsys component is a starting point for migrating window system
code (i.e. x11,glx,wgl,osx,egl etc) from Clutter to Cogl.
The utils/ and pango/ directories aren't added by this commit, but they are
noted because I plan to add them soon.
Overview of the planned structure:
* The winsys/ API is the API that binds OpenGL to a specific window system,
be that X11 or win32 etc. Example are glx, wgl and egl. Much of the logic
under clutter/{glx,osx,win32 etc} should migrate here.
* Note there is also the idea of a winsys-base that may represent a window
system for which there are multiple winsys APIs. An example of this is
x11, since glx and egl may both be used with x11. (currently only Clutter
has the idea of a winsys-base)
* The driver/ represents a specific varient of OpenGL. Currently we have "gl"
representing OpenGL 1.4-2.1 (mostly fixed function) and "gles" representing
GLES 1.1 (fixed funciton) and 2.0 (fully shader based)
* Everything under cogl/ should fundamentally be supporting access to the
GPU. Essentially Cogl's most basic requirement is to provide a nice GPU
Graphics API and drawing a line between this and the utility functionality
we add to support Clutter should help keep this lean and maintainable.
* Code under utils/ as suggested builds on cogl/ adding more convenient
APIs or mechanism to optimize special cases. Broadly speaking you can
compare cogl/ to OpenGL and utils/ to GLU.
* clutter/pango will be moved to clutter/cogl/pango
How some of the internal configure.ac/pkg-config terminology has changed:
backendextra -> CLUTTER_WINSYS_BASE # e.g. "x11"
backendextralib -> CLUTTER_WINSYS_BASE_LIB # e.g. "x11/libclutter-x11.la"
clutterbackend -> {CLUTTER,COGL}_WINSYS # e.g. "glx"
CLUTTER_FLAVOUR -> {CLUTTER,COGL}_WINSYS
clutterbackendlib -> CLUTTER_WINSYS_LIB
CLUTTER_COGL -> COGL_DRIVER # e.g. "gl"
Note: The CLUTTER_FLAVOUR and CLUTTER_COGL defines are kept for apps
As the first thing to take advantage of the new winsys component in Cogl;
cogl_get_proc_address() has been moved from cogl/{gl,gles}/cogl.c into
cogl/common/cogl.c and this common implementation first trys
_cogl_winsys_get_proc_address() but if that fails then it falls back to
gmodule.
96 lines
4.0 KiB
C
96 lines
4.0 KiB
C
/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2009 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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* Authors:
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* Havoc Pennington <hp@pobox.com> for litl
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*/
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#ifndef __COGL_CURRENT_MATRIX_H
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#define __COGL_CURRENT_MATRIX_H
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#include <cogl/cogl-matrix.h>
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/**
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* CoglMatrixMode:
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* @COGL_MATRIX_MODELVIEW: Select model-view matrix stack
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* @COGL_MATRIX_PROJECTION: Select projection matrix stack
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* @COGL_MATRIX_TEXTURE: Select texture matrix stack
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*
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* There are several matrix stacks affected by the COGL current matrix
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* operations (which are private). Code should always leave the
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* model-view matrix active, switching to the projection matrix stack
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* only temporarily in order to modify the projection matrix. Most
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* COGL and Clutter APIs (other than the current matrix operations)
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* will assume the model-view matrix is active when the API is
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* invoked.
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*
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* Since: 1.0
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*/
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typedef enum
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{
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COGL_MATRIX_MODELVIEW = 1,
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COGL_MATRIX_PROJECTION = 2,
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COGL_MATRIX_TEXTURE = 3
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} CoglMatrixMode;
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#define COGL_TYPE_MATRIX_MODE (cogl_matrix_mode_get_type ())
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GType cogl_matrix_mode_get_type (void) G_GNUC_CONST;
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void _cogl_set_current_matrix (CoglMatrixMode mode);
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void _cogl_current_matrix_push (void);
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void _cogl_current_matrix_pop (void);
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void _cogl_current_matrix_identity (void);
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void _cogl_current_matrix_load (const CoglMatrix *matrix);
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void _cogl_current_matrix_multiply (const CoglMatrix *matrix);
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void _cogl_current_matrix_rotate (float angle,
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float x,
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float y,
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float z);
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void _cogl_current_matrix_scale (float x,
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float y,
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float z);
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void _cogl_current_matrix_translate (float x,
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float y,
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float z);
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void _cogl_current_matrix_frustum (float left,
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float right,
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float bottom,
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float top,
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float near_val,
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float far_val);
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void _cogl_current_matrix_ortho (float left,
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float right,
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float bottom,
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float top,
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float near_val,
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float far_val);
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void _cogl_get_matrix (CoglMatrixMode mode,
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CoglMatrix *matrix);
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void _cogl_current_matrix_state_init (void);
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void _cogl_current_matrix_state_destroy (void);
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void _cogl_current_matrix_state_flush (void);
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void _cogl_current_matrix_state_dirty (void);
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void _cogl_flush_matrix_stacks (void);
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#endif /* __COGL_CURRENT_MATRIX_H */
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