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e82f656590
This is the result of running a number of sed and perl scripts over the code to
do 90% of the work in converting from 16.16 fixed to single precision floating
point.
Note: A pristine cogl-fixed.c has been maintained as a standalone utility API
so that applications may still take advantage of fixed point if they
desire for certain optimisations where lower precision may be acceptable.
Note: no API changes were made in Clutter, only in Cogl.
Overview of changes:
- Within clutter/* all usage of the COGL_FIXED_ macros have been changed to use
the CLUTTER_FIXED_ macros.
- Within cogl/* all usage of the COGL_FIXED_ macros have been completly stripped
and expanded into code that works with single precision floats instead.
- Uses of cogl_fixed_* have been replaced with single precision math.h
alternatives.
- Uses of COGL_ANGLE_* and cogl_angle_* have been replaced so we use a float for
angles and math.h replacements.
112 lines
2.9 KiB
C
112 lines
2.9 KiB
C
/*
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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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#ifndef __COGL_CONTEXT_H
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#define __COGL_CONTEXT_H
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#include "cogl-primitives.h"
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#include "cogl-clip-stack.h"
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#include "cogl-gles2-wrapper.h"
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typedef struct
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{
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GLfloat v[3];
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GLfloat t[2];
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GLubyte c[4];
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} CoglTextureGLVertex;
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typedef struct
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{
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/* Features cache */
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CoglFeatureFlags feature_flags;
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gboolean features_cached;
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/* Enable cache */
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gulong enable_flags;
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guint8 color_alpha;
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COGLenum blend_src_factor;
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COGLenum blend_dst_factor;
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gboolean enable_backface_culling;
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/* Primitives */
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floatVec2 path_start;
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floatVec2 path_pen;
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GArray *path_nodes;
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guint last_path;
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floatVec2 path_nodes_min;
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floatVec2 path_nodes_max;
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/* Cache of inverse projection matrix */
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float inverse_projection[16];
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/* Textures */
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GArray *texture_handles;
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GArray *texture_vertices;
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GArray *texture_indices;
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/* The gl texture number that the above vertices apply to. This to
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detect when a different slice is encountered so that the vertices
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can be flushed */
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GLuint texture_current;
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GLenum texture_target;
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GLenum texture_format;
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/* Framebuffer objects */
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GArray *fbo_handles;
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CoglBufferTarget draw_buffer;
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/* Shaders */
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GArray *program_handles;
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GArray *shader_handles;
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/* Mesh */
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GArray *mesh_handles;
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/* Clip stack */
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CoglClipStackState clip;
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#ifdef HAVE_COGL_GLES2
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CoglGles2Wrapper gles2;
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/* Viewport store for FBOs. Needed because glPushAttrib() isn't
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supported */
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GLint viewport_store[4];
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#endif
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} CoglContext;
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CoglContext *
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_cogl_context_get_default ();
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/* Obtains the context and returns retval if NULL */
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#define _COGL_GET_CONTEXT(ctxvar, retval) \
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CoglContext *ctxvar = _cogl_context_get_default (); \
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if (ctxvar == NULL) return retval;
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#define NO_RETVAL
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#endif /* __COGL_CONTEXT_H */
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