08932584b5
This is useful because sometimes we need to get the current matrix, which is too expensive when indirect rendering. In addition, this virtualization makes it easier to clean up the API in the future.
92 lines
3.9 KiB
C
92 lines
3.9 KiB
C
/*
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* Clutter COGL
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*
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* A basic GL/GLES Abstraction/Utility Layer
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*
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* Authored By Havoc Pennington <hp@pobox.com> for litl
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*
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* Copyright (C) 2009 OpenedHand
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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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#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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#endif /* __COGL_CURRENT_MATRIX_H */
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