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153f5ea73f
* clutter/cogl/gl/cogl-texture.c (cogl_texture_polygon) (_cogl_texture_quad_sw, _cogl_texture_quad_hw): * clutter/cogl/gles/cogl-texture.c (cogl_texture_polygon) (_cogl_texture_quad_sw, _cogl_texture_quad_hw): Enable backface culling in GL if it is requested. * clutter/cogl/gles/cogl-texture.c (_cogl_texture_quad_sw) (_cogl_texture_quad_hw): * clutter/cogl/gl/cogl-texture.c (_cogl_texture_quad_sw) (_cogl_texture_quad_hw): Reorder the vertices so that they are counter-clockwise. * clutter/cogl/gles/cogl-context.h (CoglContext): * clutter/cogl/gl/cogl-context.h (CoglContext): Added a flag to store whether backface culling is currently enabled. * clutter/cogl/gles/cogl.c (cogl_enable_backface_culling): * clutter/cogl/gl/cogl.c (cogl_enable_backface_culling): New function * doc/reference/cogl/cogl-sections.txt: Add cogl_enable_backface_culling
97 lines
2.5 KiB
C
97 lines
2.5 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-gles2-wrapper.h"
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typedef struct
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{
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GLfixed v[3];
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GLfixed t[2];
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GLfixed 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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GLint num_stencil_bits;
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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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CoglFixedVec2 path_start;
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CoglFixedVec2 path_pen;
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CoglFixedVec2 *path_nodes;
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guint path_nodes_cap;
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guint path_nodes_size;
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CoglFixedVec2 path_nodes_min;
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CoglFixedVec2 path_nodes_max;
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/* Cache of inverse projection matrix */
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ClutterFixed inverse_projection[16];
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/* Textures */
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GArray *texture_handles;
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CoglTextureGLVertex *texture_vertices;
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gulong texture_vertices_size;
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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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#ifdef HAVE_COGL_GLES2
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CoglGles2Wrapper gles2;
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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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