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  • Committer: Bazaar Package Importer
  • Author(s): Emilio Pozuelo Monfort
  • Date: 2010-03-21 13:27:56 UTC
  • mto: (2.1.3 experimental) (1.3.1 upstream)
  • mto: This revision was merged to the branch mainline in revision 8.
  • Revision ID: james.westby@ubuntu.com-20100321132756-nf8yd30yxo3zzwcm
Tags: upstream-1.2.2
Import upstream version 1.2.2

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clutter/cogl/gl/cogl-context.h
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/*
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 * Cogl
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 *
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 * An object oriented GL/GLES Abstraction/Utility Layer
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 *
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 * Copyright (C) 2007,2008,2009 Intel Corporation.
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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-matrix-stack.h"
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#include "cogl-current-matrix.h"
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#include "cogl-material-private.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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  CoglBufferTarget target;
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  CoglHandle offscreen;
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} CoglDrawBufferState;
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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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  gboolean          enable_backface_culling;
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  gboolean          indirect;
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  /* Client-side matrix stack or NULL if none */
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  CoglMatrixMode    matrix_mode;
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  CoglMatrixStack  *modelview_stack;
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  CoglMatrixStack  *projection_stack;
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  /* Cache of inverse projection matrix */
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  float            inverse_projection[16];
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  /* Materials */
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  CoglHandle        default_material;
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  CoglHandle        source_material;
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  /* Textures */
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  CoglHandle        default_gl_texture_2d_tex;
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  CoglHandle        default_gl_texture_rect_tex;
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  /* Batching geometry... */
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  /* We journal the texture rectangles we want to submit to OpenGL so
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   * we have an oppertunity to optimise the final order so that we
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   * can batch things together. */
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  GArray           *journal;
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  GArray           *logged_vertices;
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  /* Some simple caching, to minimize state changes... */
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  CoglHandle        current_material;
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  gulong            current_material_flags;
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  CoglMaterialFlushOptions current_material_flush_options;
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  GArray           *current_layers;
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  guint             n_texcoord_arrays_enabled;
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  /* Framebuffer objects */
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  GSList           *draw_buffer_stack;
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  /* Clip stack */
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  CoglClipStackState clip;
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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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  CoglHandle        stencil_material;
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  /* Pre-generated VBOs containing indices to generate GL_TRIANGLES
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     out of a vertex array of quads */
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  CoglHandle        quad_indices_byte;
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  guint             quad_indices_short_len;
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  CoglHandle        quad_indices_short;
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  gboolean          in_begin_gl_block;
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  guint             viewport_width;
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  guint             viewport_height;
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  /* Relying on glext.h to define these */
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  COGL_PFNGLGENRENDERBUFFERSEXTPROC                pf_glGenRenderbuffersEXT;
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  COGL_PFNGLDELETERENDERBUFFERSEXTPROC             pf_glDeleteRenderbuffersEXT;
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  COGL_PFNGLBINDRENDERBUFFEREXTPROC                pf_glBindRenderbufferEXT;
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  COGL_PFNGLRENDERBUFFERSTORAGEEXTPROC             pf_glRenderbufferStorageEXT;
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  COGL_PFNGLGENFRAMEBUFFERSEXTPROC                 pf_glGenFramebuffersEXT;
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  COGL_PFNGLBINDFRAMEBUFFEREXTPROC                 pf_glBindFramebufferEXT;
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  COGL_PFNGLFRAMEBUFFERTEXTURE2DEXTPROC            pf_glFramebufferTexture2DEXT;
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  COGL_PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC         pf_glFramebufferRenderbufferEXT;
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  COGL_PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC          pf_glCheckFramebufferStatusEXT;
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  COGL_PFNGLDELETEFRAMEBUFFERSEXTPROC              pf_glDeleteFramebuffersEXT;
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  COGL_PFNGLBLITFRAMEBUFFEREXTPROC                 pf_glBlitFramebufferEXT;
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  COGL_PFNGLRENDERBUFFERSTORAGEMULTISAMPLEEXTPROC  pf_glRenderbufferStorageMultisampleEXT;
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  COGL_PFNGLGENERATEMIPMAPEXTPROC                  pf_glGenerateMipmapEXT;
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  COGL_PFNGLCREATEPROGRAMOBJECTARBPROC             pf_glCreateProgramObjectARB;
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  COGL_PFNGLCREATESHADEROBJECTARBPROC              pf_glCreateShaderObjectARB;
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  COGL_PFNGLSHADERSOURCEARBPROC                    pf_glShaderSourceARB;
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  COGL_PFNGLCOMPILESHADERARBPROC                   pf_glCompileShaderARB;
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  COGL_PFNGLATTACHOBJECTARBPROC                    pf_glAttachObjectARB;
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  COGL_PFNGLLINKPROGRAMARBPROC                     pf_glLinkProgramARB;
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  COGL_PFNGLUSEPROGRAMOBJECTARBPROC                pf_glUseProgramObjectARB;
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  COGL_PFNGLGETUNIFORMLOCATIONARBPROC              pf_glGetUniformLocationARB;
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  COGL_PFNGLDELETEOBJECTARBPROC                    pf_glDeleteObjectARB;
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  COGL_PFNGLGETINFOLOGARBPROC                      pf_glGetInfoLogARB;
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  COGL_PFNGLGETOBJECTPARAMETERIVARBPROC            pf_glGetObjectParameterivARB;
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  COGL_PFNGLVERTEXATTRIBPOINTERARBPROC             pf_glVertexAttribPointerARB;
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  COGL_PFNGLENABLEVERTEXATTRIBARRAYARBPROC         pf_glEnableVertexAttribArrayARB;
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  COGL_PFNGLDISABLEVERTEXATTRIBARRAYARBPROC        pf_glDisableVertexAttribArrayARB;
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  COGL_PFNGLGENBUFFERSARBPROC                      pf_glGenBuffersARB;
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  COGL_PFNGLBINDBUFFERARBPROC                      pf_glBindBufferARB;
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  COGL_PFNGLBUFFERDATAARBPROC                      pf_glBufferDataARB;
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  COGL_PFNGLBUFFERSUBDATAARBPROC                   pf_glBufferSubDataARB;
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  COGL_PFNGLMAPBUFFERARBPROC                       pf_glMapBufferARB;
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  COGL_PFNGLUNMAPBUFFERARBPROC                     pf_glUnmapBufferARB;
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  COGL_PFNGLDELETEBUFFERSARBPROC                   pf_glDeleteBuffersARB;
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  COGL_PFNGLUNIFORM1FARBPROC                       pf_glUniform1fARB;
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  COGL_PFNGLUNIFORM2FARBPROC                       pf_glUniform2fARB;
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  COGL_PFNGLUNIFORM3FARBPROC                       pf_glUniform3fARB;
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  COGL_PFNGLUNIFORM4FARBPROC                       pf_glUniform4fARB;
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  COGL_PFNGLUNIFORM1FVARBPROC                      pf_glUniform1fvARB;
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  COGL_PFNGLUNIFORM2FVARBPROC                      pf_glUniform2fvARB;
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  COGL_PFNGLUNIFORM3FVARBPROC                      pf_glUniform3fvARB;
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  COGL_PFNGLUNIFORM4FVARBPROC                      pf_glUniform4fvARB;
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  COGL_PFNGLUNIFORM1IARBPROC                       pf_glUniform1iARB;
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  COGL_PFNGLUNIFORM2IARBPROC                       pf_glUniform2iARB;
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  COGL_PFNGLUNIFORM3IARBPROC                       pf_glUniform3iARB;
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  COGL_PFNGLUNIFORM4IARBPROC                       pf_glUniform4iARB;
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  COGL_PFNGLUNIFORM1IVARBPROC                      pf_glUniform1ivARB;
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  COGL_PFNGLUNIFORM2IVARBPROC                      pf_glUniform2ivARB;
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  COGL_PFNGLUNIFORM3IVARBPROC                      pf_glUniform3ivARB;
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  COGL_PFNGLUNIFORM4IVARBPROC                      pf_glUniform4ivARB;
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  COGL_PFNGLUNIFORMMATRIX2FVARBPROC                pf_glUniformMatrix2fvARB;
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  COGL_PFNGLUNIFORMMATRIX3FVARBPROC                pf_glUniformMatrix3fvARB;
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  COGL_PFNGLUNIFORMMATRIX4FVARBPROC                pf_glUniformMatrix4fvARB;
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  COGL_PFNGLDRAWRANGEELEMENTSPROC                  pf_glDrawRangeElements;
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  COGL_PFNGLACTIVETEXTUREPROC                      pf_glActiveTexture;
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  COGL_PFNGLCLIENTACTIVETEXTUREPROC                pf_glClientActiveTexture;
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  COGL_PFNGLBLENDEQUATIONPROC                      pf_glBlendEquation;
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  COGL_PFNGLBLENDCOLORPROC                         pf_glBlendColor;
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  COGL_PFNGLBLENDFUNCSEPARATEPROC                  pf_glBlendFuncSeparate;
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  COGL_PFNGLBLENDEQUATIONSEPARATEPROC              pf_glBlendEquationSeparate;
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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 */