89e7552ca3
* clutter/cogl/cogl-path.h: * clutter/cogl/common/cogl-primitives.c: * clutter/cogl/common/cogl-primitives.h: * clutter/cogl/gl/cogl-primitives.c: * clutter/cogl/gles/cogl-primitives.c: Changed the semantics of cogl_path_move_to. Previously this always started a new path but now it instead starts a new disjoint sub path. The path isn't cleared until you call either cogl_path_stroke, cogl_path_fill or cogl_path_new. There are also cogl_path_stroke_preserve and cogl_path_fill_preserve functions. * clutter/cogl/gl/cogl-context.c: * clutter/cogl/gl/cogl-context.h: * clutter/cogl/gles/cogl-context.c: * clutter/cogl/gles/cogl-context.h: Convert the path nodes array to a GArray. * clutter/cogl/gl/cogl-texture.c: * clutter/cogl/gles/cogl-texture.c: Call cogl_clip_ensure * clutter/cogl/common/cogl-clip-stack.c: * clutter/cogl/common/cogl-clip-stack.h: Simplified the clip stack code quite a bit to make it more maintainable. Previously whenever you added a new clip it would go through a separate route to immediately intersect with the current clip and when you removed it again it would immediately rebuild the entire clip. Now when you add or remove a clip it doesn't do anything immediately but just sets a dirty flag instead. * clutter/cogl/gl/cogl.c: * clutter/cogl/gles/cogl.c: Taken away the code to intersect stencil clips when there is exactly one stencil bit. It won't work with path clips and I don't know of any platform that doesn't have eight or zero stencil bits. It needs at least three bits to intersect a path with an existing clip. cogl_features_init now just decides you don't have a stencil buffer at all if you have less than three bits. * clutter/cogl/cogl.h.in: New functions and documentation. * tests/interactive/test-clip.c: Replaced with a different test that lets you add and remove clips. The three different mouse buttons add clips in different shapes. This makes it easier to test multiple levels of clipping. * tests/interactive/test-cogl-primitives.c: Use cogl_path_stroke_preserve when using the same path again. * doc/reference/cogl/cogl-sections.txt: Document the new functions.
130 lines
3.2 KiB
C
130 lines
3.2 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_size = 0;
|
|
_context->texture_vertices = NULL;
|
|
|
|
_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_free (_context->texture_vertices);
|
|
|
|
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;
|
|
}
|