e338245827
This better reflects the fact that the api manages sets of vertex attributes, and the attributes really have no implied form. It is only when you use the attributes to draw that they become mesh like; when you specify how they should be interpreted, e.g. as triangle lists or fans etc. This rename frees up the term "mesh", which can later be applied to a concept slightly more fitting. E.g. at some point it would be nice to have a higher level abstraction that sits on top of cogl vertex buffers that adds the concept of faces. (Somthing like Blender's mesh objects.) There have also been some discussions over particle engines, and these can be defined in terms of emitter faces; so some other kind of mesh abstraction might be usefull here.
111 lines
2.9 KiB
C
111 lines
2.9 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.
|
|
*/
|
|
|
|
#ifndef __COGL_CONTEXT_H
|
|
#define __COGL_CONTEXT_H
|
|
|
|
#include "cogl-primitives.h"
|
|
#include "cogl-clip-stack.h"
|
|
|
|
#include "cogl-gles2-wrapper.h"
|
|
|
|
typedef struct
|
|
{
|
|
GLfloat v[3];
|
|
GLfloat t[2];
|
|
GLubyte c[4];
|
|
} CoglTextureGLVertex;
|
|
|
|
typedef struct
|
|
{
|
|
/* Features cache */
|
|
CoglFeatureFlags feature_flags;
|
|
gboolean features_cached;
|
|
|
|
/* Enable cache */
|
|
gulong enable_flags;
|
|
guint8 color_alpha;
|
|
COGLenum blend_src_factor;
|
|
COGLenum blend_dst_factor;
|
|
|
|
gboolean enable_backface_culling;
|
|
|
|
/* Primitives */
|
|
floatVec2 path_start;
|
|
floatVec2 path_pen;
|
|
GArray *path_nodes;
|
|
guint last_path;
|
|
floatVec2 path_nodes_min;
|
|
floatVec2 path_nodes_max;
|
|
|
|
/* Cache of inverse projection matrix */
|
|
float inverse_projection[16];
|
|
|
|
/* Textures */
|
|
GArray *texture_handles;
|
|
GArray *texture_vertices;
|
|
GArray *texture_indices;
|
|
/* The gl texture number that the above vertices apply to. This to
|
|
detect when a different slice is encountered so that the vertices
|
|
can be flushed */
|
|
GLuint texture_current;
|
|
GLenum texture_target;
|
|
GLenum texture_format;
|
|
|
|
/* Framebuffer objects */
|
|
GArray *fbo_handles;
|
|
CoglBufferTarget draw_buffer;
|
|
|
|
/* Shaders */
|
|
GArray *program_handles;
|
|
GArray *shader_handles;
|
|
|
|
/* Vertex buffers */
|
|
GArray *vertex_buffer_handles;
|
|
|
|
/* Clip stack */
|
|
CoglClipStackState clip;
|
|
|
|
#ifdef HAVE_COGL_GLES2
|
|
CoglGles2Wrapper gles2;
|
|
|
|
/* Viewport store for FBOs. Needed because glPushAttrib() isn't
|
|
supported */
|
|
GLint viewport_store[4];
|
|
#endif
|
|
|
|
} CoglContext;
|
|
|
|
CoglContext *
|
|
_cogl_context_get_default ();
|
|
|
|
/* Obtains the context and returns retval if NULL */
|
|
#define _COGL_GET_CONTEXT(ctxvar, retval) \
|
|
CoglContext *ctxvar = _cogl_context_get_default (); \
|
|
if (ctxvar == NULL) return retval;
|
|
|
|
#define NO_RETVAL
|
|
|
|
#endif /* __COGL_CONTEXT_H */
|