mirror of
https://github.com/brl/mutter.git
synced 2024-11-30 03:50:47 -05:00
134 lines
3.4 KiB
C
134 lines
3.4 KiB
C
/*
|
|
* 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.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "cogl.h"
|
|
|
|
#include <string.h>
|
|
|
|
#include "cogl-internal.h"
|
|
#include "cogl-util.h"
|
|
#include "cogl-context.h"
|
|
|
|
#include "cogl-gles2-wrapper.h"
|
|
|
|
static CoglContext *_context = NULL;
|
|
|
|
gboolean
|
|
cogl_create_context ()
|
|
{
|
|
if (_context != NULL)
|
|
return FALSE;
|
|
|
|
/* Allocate context memory */
|
|
_context = (CoglContext*) g_malloc (sizeof (CoglContext));
|
|
|
|
/* Init default values */
|
|
_context->feature_flags = 0;
|
|
_context->features_cached = FALSE;
|
|
|
|
_context->enable_flags = 0;
|
|
_context->color_alpha = 255;
|
|
|
|
_context->path_nodes = g_array_new (FALSE, FALSE, sizeof (CoglPathNode));
|
|
_context->last_path = 0;
|
|
|
|
_context->texture_handles = NULL;
|
|
_context->texture_vertices = g_array_new (FALSE, FALSE,
|
|
sizeof (CoglTextureGLVertex));
|
|
_context->texture_indices = g_array_new (FALSE, FALSE,
|
|
sizeof (GLushort));
|
|
|
|
_context->fbo_handles = NULL;
|
|
_context->program_handles = NULL;
|
|
_context->shader_handles = NULL;
|
|
_context->draw_buffer = COGL_WINDOW_BUFFER;
|
|
|
|
_context->mesh_handles = NULL;
|
|
|
|
_context->blend_src_factor = CGL_SRC_ALPHA;
|
|
_context->blend_dst_factor = CGL_ONE_MINUS_SRC_ALPHA;
|
|
|
|
/* Init the GLES2 wrapper */
|
|
#ifdef HAVE_COGL_GLES2
|
|
cogl_gles2_wrapper_init (&_context->gles2);
|
|
#endif
|
|
|
|
/* Init OpenGL state */
|
|
GE( cogl_wrap_glTexEnvx (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE) );
|
|
GE( glColorMask (TRUE, TRUE, TRUE, FALSE) );
|
|
GE( glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) );
|
|
cogl_enable (0);
|
|
|
|
_cogl_clip_stack_state_init ();
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
cogl_destroy_context ()
|
|
{
|
|
if (_context == NULL)
|
|
return;
|
|
|
|
_cogl_clip_stack_state_destroy ();
|
|
|
|
if (_context->path_nodes)
|
|
g_array_free (_context->path_nodes, TRUE);
|
|
|
|
#ifdef HAVE_COGL_GLES2
|
|
cogl_gles2_wrapper_deinit (&_context->gles2);
|
|
#endif
|
|
|
|
if (_context->texture_vertices)
|
|
g_array_free (_context->texture_vertices, TRUE);
|
|
if (_context->texture_indices)
|
|
g_array_free (_context->texture_indices, TRUE);
|
|
|
|
if (_context->texture_handles)
|
|
g_array_free (_context->texture_handles, TRUE);
|
|
if (_context->fbo_handles)
|
|
g_array_free (_context->fbo_handles, TRUE);
|
|
if (_context->shader_handles)
|
|
g_array_free (_context->shader_handles, TRUE);
|
|
if (_context->program_handles)
|
|
g_array_free (_context->program_handles, TRUE);
|
|
|
|
g_free (_context);
|
|
}
|
|
|
|
CoglContext *
|
|
_cogl_context_get_default ()
|
|
{
|
|
/* Create if doesn't exists yet */
|
|
if (_context == NULL)
|
|
cogl_create_context ();
|
|
|
|
return _context;
|
|
}
|