2008-04-25 13:37:36 +00:00
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/*
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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 Matthew Allum <mallum@openedhand.com>
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*
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* Copyright (C) 2007 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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "cogl.h"
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#include "cogl-internal.h"
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#include "cogl-util.h"
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#include "cogl-context.h"
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2009-01-26 11:07:35 +00:00
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#include "cogl-texture-private.h"
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#include "cogl-material-private.h"
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2008-04-25 13:37:36 +00:00
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2008-05-27 17:42:50 +00:00
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#include "cogl-gles2-wrapper.h"
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2009-01-26 11:07:35 +00:00
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#include <string.h>
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2008-04-25 13:37:36 +00:00
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static CoglContext *_context = NULL;
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gboolean
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cogl_create_context ()
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{
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2009-01-26 11:07:35 +00:00
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GLubyte default_texture_data[] = { 0xff, 0xff, 0xff, 0x0 };
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gulong enable_flags = 0;
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2008-04-25 13:37:36 +00:00
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if (_context != NULL)
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return FALSE;
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2009-01-26 11:07:35 +00:00
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2008-04-25 13:37:36 +00:00
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/* Allocate context memory */
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_context = (CoglContext*) g_malloc (sizeof (CoglContext));
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2009-01-26 11:07:35 +00:00
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2008-04-25 13:37:36 +00:00
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/* Init default values */
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_context->feature_flags = 0;
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_context->features_cached = FALSE;
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2009-01-26 11:07:35 +00:00
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2008-04-25 13:37:36 +00:00
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_context->enable_flags = 0;
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_context->color_alpha = 255;
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2009-01-26 11:07:35 +00:00
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_context->material_handles = NULL;
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_context->material_layer_handles = NULL;
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_context->default_material = cogl_material_new ();
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_context->source_material = NULL;
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2008-12-04 13:45:09 +00:00
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2008-04-25 13:37:36 +00:00
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_context->texture_handles = NULL;
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2009-01-26 11:07:35 +00:00
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_context->default_gl_texture_2d_tex = COGL_INVALID_HANDLE;
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_context->default_gl_texture_rect_tex = COGL_INVALID_HANDLE;
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_context->texture_download_material = COGL_INVALID_HANDLE;
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_context->journal = g_array_new (FALSE, FALSE, sizeof (CoglJournalEntry));
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_context->logged_vertices = g_array_new (FALSE, FALSE, sizeof (GLfloat));
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_context->static_indices = g_array_new (FALSE, FALSE, sizeof (GLushort));
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_context->polygon_vertices = g_array_new (FALSE, FALSE,
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2008-12-09 15:10:33 +00:00
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sizeof (CoglTextureGLVertex));
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2009-01-26 11:07:35 +00:00
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_context->current_material = NULL;
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_context->current_material_flags = 0;
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_context->current_layers = g_array_new (FALSE, FALSE,
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sizeof (CoglLayerInfo));
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_context->n_texcoord_arrays_enabled = 0;
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2008-12-11 15:33:38 +00:00
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2008-04-25 13:37:36 +00:00
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_context->fbo_handles = NULL;
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_context->draw_buffer = COGL_WINDOW_BUFFER;
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2008-11-10 18:53:14 +00:00
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2009-01-26 11:07:35 +00:00
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_context->shader_handles = NULL;
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_context->program_handles = NULL;
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2009-01-20 21:12:44 +00:00
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_context->vertex_buffer_handles = NULL;
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2009-01-26 11:07:35 +00:00
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_context->path_nodes = g_array_new (FALSE, FALSE, sizeof (CoglPathNode));
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_context->last_path = 0;
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_context->stencil_material = cogl_material_new ();
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2008-05-27 17:42:50 +00:00
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/* Init the GLES2 wrapper */
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#ifdef HAVE_COGL_GLES2
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cogl_gles2_wrapper_init (&_context->gles2);
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#endif
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2008-12-04 13:45:09 +00:00
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2009-01-26 11:07:35 +00:00
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/* Initialise the clip stack */
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2008-12-04 13:45:09 +00:00
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_cogl_clip_stack_state_init ();
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2009-01-26 11:07:35 +00:00
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/* Create default textures used for fall backs */
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_context->default_gl_texture_2d_tex =
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cogl_texture_new_from_data (1, /* width */
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1, /* height */
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-1, /* max waste */
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2009-01-28 14:09:51 +00:00
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COGL_TEXTURE_NONE, /* flags */
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2009-01-26 11:07:35 +00:00
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COGL_PIXEL_FORMAT_RGBA_8888, /* data format */
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/* internal format */
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COGL_PIXEL_FORMAT_RGBA_8888,
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0, /* auto calc row stride */
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2009-01-28 14:09:51 +00:00
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default_texture_data);
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2009-01-26 11:07:35 +00:00
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_context->default_gl_texture_rect_tex =
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cogl_texture_new_from_data (1, /* width */
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1, /* height */
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-1, /* max waste */
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2009-01-28 14:09:51 +00:00
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COGL_TEXTURE_NONE, /* flags */
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2009-01-26 11:07:35 +00:00
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COGL_PIXEL_FORMAT_RGBA_8888, /* data format */
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/* internal format */
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COGL_PIXEL_FORMAT_RGBA_8888,
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0, /* auto calc row stride */
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2009-01-28 14:09:51 +00:00
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default_texture_data);
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2009-01-26 11:07:35 +00:00
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cogl_set_source (_context->default_material);
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cogl_material_flush_gl_state (_context->source_material, NULL);
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enable_flags =
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cogl_material_get_cogl_enable_flags (_context->source_material);
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cogl_enable (enable_flags);
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2008-04-25 13:37:36 +00:00
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return TRUE;
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}
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void
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cogl_destroy_context ()
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{
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if (_context == NULL)
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return;
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2008-12-04 13:45:09 +00:00
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_cogl_clip_stack_state_destroy ();
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if (_context->path_nodes)
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g_array_free (_context->path_nodes, TRUE);
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2008-06-02 10:58:57 +00:00
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if (_context->texture_handles)
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g_array_free (_context->texture_handles, TRUE);
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if (_context->fbo_handles)
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g_array_free (_context->fbo_handles, TRUE);
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if (_context->shader_handles)
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g_array_free (_context->shader_handles, TRUE);
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if (_context->program_handles)
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g_array_free (_context->program_handles, TRUE);
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2009-01-26 11:07:35 +00:00
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if (_context->default_gl_texture_2d_tex)
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cogl_texture_unref (_context->default_gl_texture_2d_tex);
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if (_context->default_gl_texture_rect_tex)
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cogl_texture_unref (_context->default_gl_texture_rect_tex);
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if (_context->default_material)
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cogl_material_unref (_context->default_material);
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if (_context->journal)
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g_array_free (_context->journal, TRUE);
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if (_context->logged_vertices)
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g_array_free (_context->logged_vertices, TRUE);
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if (_context->static_indices)
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g_array_free (_context->static_indices, TRUE);
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if (_context->polygon_vertices)
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g_array_free (_context->polygon_vertices, TRUE);
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if (_context->current_layers)
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g_array_free (_context->current_layers, TRUE);
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2008-04-25 13:37:36 +00:00
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g_free (_context);
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}
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CoglContext *
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_cogl_context_get_default ()
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{
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2009-01-26 11:07:35 +00:00
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/* Create if doesn't exist yet */
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2008-04-25 13:37:36 +00:00
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if (_context == NULL)
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cogl_create_context ();
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2009-01-26 11:07:35 +00:00
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2008-04-25 13:37:36 +00:00
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return _context;
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}
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