676c8a5fd4
Instead of using cogl_get_bitmasks() to query the GL machinery for the size of the color bits, we should store the values inside the CoglFramebuffer object and query them the first time we set the framebuffer as the current one. Currently, cogl_get_bitmasks() is re-implemented in terms of cogl_framebuffer_get_*_bits(). As soon as we are able to expose the CoglOnscreen framebuffer object in the public API we'll be able to deprecate cogl_get_bitmasks() altogether. http://bugzilla.openedhand.com/show_bug.cgi?id=2094
245 lines
7.3 KiB
C
245 lines
7.3 KiB
C
/*
|
|
* Cogl
|
|
*
|
|
* An object oriented GL/GLES Abstraction/Utility Layer
|
|
*
|
|
* Copyright (C) 2007,2008,2009 Intel Corporation.
|
|
*
|
|
* 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, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "cogl.h"
|
|
#include "cogl-internal.h"
|
|
#include "cogl-util.h"
|
|
#include "cogl-context.h"
|
|
#include "cogl-journal-private.h"
|
|
#include "cogl-texture-private.h"
|
|
#include "cogl-material-private.h"
|
|
#include "cogl-framebuffer-private.h"
|
|
#include "cogl-path-private.h"
|
|
|
|
#include <string.h>
|
|
|
|
extern void
|
|
_cogl_create_context_driver (CoglContext *context);
|
|
|
|
static CoglContext *_context = NULL;
|
|
static gboolean gl_is_indirect = FALSE;
|
|
|
|
static gboolean
|
|
cogl_create_context (void)
|
|
{
|
|
GLubyte default_texture_data[] = { 0xff, 0xff, 0xff, 0x0 };
|
|
unsigned long enable_flags = 0;
|
|
CoglHandle window_buffer;
|
|
|
|
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;
|
|
|
|
/* Initialise the driver specific state */
|
|
/* TODO: combine these two into one function */
|
|
_cogl_create_context_driver (_context);
|
|
_cogl_features_init ();
|
|
|
|
_cogl_material_init_default_material ();
|
|
|
|
_context->enable_flags = 0;
|
|
_context->color_alpha = 0;
|
|
|
|
_context->enable_backface_culling = FALSE;
|
|
_context->flushed_front_winding = COGL_FRONT_WINDING_COUNTER_CLOCKWISE;
|
|
|
|
_context->indirect = gl_is_indirect;
|
|
|
|
cogl_matrix_init_identity (&_context->identity_matrix);
|
|
cogl_matrix_init_identity (&_context->y_flip_matrix);
|
|
cogl_matrix_scale (&_context->y_flip_matrix, 1, -1, 1);
|
|
|
|
_context->flushed_matrix_mode = COGL_MATRIX_MODELVIEW;
|
|
_context->texture_units = NULL;
|
|
|
|
_context->simple_material = cogl_material_new ();
|
|
_context->source_material = NULL;
|
|
|
|
_context->default_gl_texture_2d_tex = COGL_INVALID_HANDLE;
|
|
_context->default_gl_texture_rect_tex = COGL_INVALID_HANDLE;
|
|
|
|
_context->journal = g_array_new (FALSE, FALSE, sizeof (CoglJournalEntry));
|
|
_context->logged_vertices = g_array_new (FALSE, FALSE, sizeof (GLfloat));
|
|
|
|
_context->current_material = NULL;
|
|
_context->current_material_flags = 0;
|
|
memset (&_context->current_material_flush_options,
|
|
0, sizeof (CoglMaterialFlushOptions));
|
|
_context->current_layers = g_array_new (FALSE, FALSE,
|
|
sizeof (CoglLayerInfo));
|
|
_context->n_texcoord_arrays_enabled = 0;
|
|
|
|
_context->framebuffer_stack = _cogl_create_framebuffer_stack ();
|
|
|
|
window_buffer = _cogl_onscreen_new ();
|
|
cogl_set_framebuffer (window_buffer);
|
|
/* XXX: the deprecated _cogl_set_draw_buffer API expects to
|
|
* find the window buffer here... */
|
|
_context->window_buffer = window_buffer;
|
|
|
|
_context->dirty_bound_framebuffer = TRUE;
|
|
_context->dirty_gl_viewport = TRUE;
|
|
|
|
_context->current_path = _cogl_path_new ();
|
|
_context->stencil_material = cogl_material_new ();
|
|
|
|
_context->in_begin_gl_block = FALSE;
|
|
|
|
_context->quad_indices_byte = COGL_INVALID_HANDLE;
|
|
_context->quad_indices_short = COGL_INVALID_HANDLE;
|
|
_context->quad_indices_short_len = 0;
|
|
|
|
_context->texture_download_material = COGL_INVALID_HANDLE;
|
|
|
|
/* Create default textures used for fall backs */
|
|
_context->default_gl_texture_2d_tex =
|
|
cogl_texture_new_from_data (1, /* width */
|
|
1, /* height */
|
|
COGL_TEXTURE_NO_SLICING,
|
|
COGL_PIXEL_FORMAT_RGBA_8888_PRE, /* data format */
|
|
/* internal format */
|
|
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
|
|
0, /* auto calc row stride */
|
|
default_texture_data);
|
|
_context->default_gl_texture_rect_tex =
|
|
cogl_texture_new_from_data (1, /* width */
|
|
1, /* height */
|
|
COGL_TEXTURE_NO_SLICING,
|
|
COGL_PIXEL_FORMAT_RGBA_8888_PRE, /* data format */
|
|
/* internal format */
|
|
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
|
|
0, /* auto calc row stride */
|
|
default_texture_data);
|
|
|
|
cogl_set_source (_context->simple_material);
|
|
_cogl_material_flush_gl_state (_context->source_material, NULL);
|
|
enable_flags =
|
|
_cogl_material_get_cogl_enable_flags (_context->source_material);
|
|
_cogl_enable (enable_flags);
|
|
_cogl_flush_face_winding ();
|
|
|
|
_context->atlas = NULL;
|
|
_context->atlas_texture = COGL_INVALID_HANDLE;
|
|
|
|
_context->current_pbo = NULL;
|
|
|
|
_context->max_texture_units = -1;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
_cogl_destroy_context ()
|
|
{
|
|
|
|
if (_context == NULL)
|
|
return;
|
|
|
|
_cogl_destroy_texture_units ();
|
|
|
|
_cogl_free_framebuffer_stack (_context->framebuffer_stack);
|
|
|
|
if (_context->current_path)
|
|
cogl_handle_unref (_context->current_path);
|
|
|
|
if (_context->default_gl_texture_2d_tex)
|
|
cogl_handle_unref (_context->default_gl_texture_2d_tex);
|
|
if (_context->default_gl_texture_rect_tex)
|
|
cogl_handle_unref (_context->default_gl_texture_rect_tex);
|
|
|
|
if (_context->simple_material)
|
|
cogl_handle_unref (_context->simple_material);
|
|
|
|
if (_context->journal)
|
|
g_array_free (_context->journal, TRUE);
|
|
if (_context->logged_vertices)
|
|
g_array_free (_context->logged_vertices, TRUE);
|
|
|
|
if (_context->current_layers)
|
|
g_array_free (_context->current_layers, TRUE);
|
|
|
|
if (_context->quad_indices_byte)
|
|
cogl_handle_unref (_context->quad_indices_byte);
|
|
if (_context->quad_indices_short)
|
|
cogl_handle_unref (_context->quad_indices_short);
|
|
|
|
if (_context->default_material)
|
|
cogl_handle_unref (_context->default_material);
|
|
|
|
if (_context->atlas)
|
|
_cogl_atlas_free (_context->atlas);
|
|
if (_context->atlas_texture)
|
|
cogl_handle_unref (_context->atlas_texture);
|
|
|
|
g_free (_context);
|
|
}
|
|
|
|
CoglContext *
|
|
_cogl_context_get_default ()
|
|
{
|
|
/* Create if doesn't exist yet */
|
|
if (_context == NULL)
|
|
cogl_create_context ();
|
|
|
|
return _context;
|
|
}
|
|
|
|
/**
|
|
* _cogl_set_indirect_context:
|
|
* @indirect: TRUE if GL context is indirect
|
|
*
|
|
* Advises COGL that the GL context is indirect (commands are sent
|
|
* over a socket). COGL uses this information to try to avoid
|
|
* round-trips in its use of GL, for example.
|
|
*
|
|
* This function cannot be called "on the fly," only before COGL
|
|
* initializes.
|
|
*/
|
|
void
|
|
_cogl_set_indirect_context (gboolean indirect)
|
|
{
|
|
/* we get called multiple times if someone creates
|
|
* more than the default stage
|
|
*/
|
|
if (_context != NULL)
|
|
{
|
|
if (indirect != _context->indirect)
|
|
g_warning ("Right now all stages will be treated as "
|
|
"either direct or indirect, ignoring attempt "
|
|
"to change to indirect=%d", indirect);
|
|
return;
|
|
}
|
|
|
|
gl_is_indirect = indirect;
|
|
}
|