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mutter-performance-source/gl/cogl-context.h
Neil Roberts e7e8978029 [cogl] Move the texture filters to be a property of the material layer 
The texture filters are now a property of the material layer rather
than the texture object. Whenever a texture is painted with a material
it sets the filters on all of the GL textures in the Cogl texture. The
filter is cached so that it won't be changed unnecessarily.

The automatic mipmap generation has changed so that the mipmaps are
only generated when the texture is painted instead of every time the
data changes. Changing the texture sets a flag to mark that the
mipmaps are dirty. This works better if the FBO extension is available
because we can use glGenerateMipmap. If the extension is not available
it will temporarily enable automatic mipmap generation and reupload
the first pixel of each slice. This requires tracking the data for the
first pixel.

The COGL_TEXTURE_AUTO_MIPMAP flag has been replaced with
COGL_TEXTURE_NO_AUTO_MIPMAP so that it will default to
auto-mipmapping. The mipmap generation is now effectively free if you
are not using a mipmap filter mode so you would only want to disable
it if you had some special reason to generate your own mipmaps.

ClutterTexture no longer has to store its own copy of the filter
mode. Instead it stores it in the material and the property is
directly set and read from that. This fixes problems with the filters
getting out of sync when a cogl handle is set on the texture
directly. It also avoids the mess of having to rerealize the texture
if the filter quality changes to HIGH because Cogl will take of
generating the mipmaps if needed.
2009-06-04 19:03:40 +01:00

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009 Intel Corporation.
*
* 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-matrix-stack.h"
#include "cogl-current-matrix.h"
typedef struct
{
GLfloat v[3];
GLfloat t[2];
GLubyte c[4];
} CoglTextureGLVertex;
typedef struct
{
CoglBufferTarget target;
CoglHandle offscreen;
} CoglDrawBufferState;
typedef struct
{
/* Features cache */
CoglFeatureFlags feature_flags;
gboolean features_cached;
/* Enable cache */
gulong enable_flags;
guint8 color_alpha;
gboolean enable_backface_culling;
gboolean indirect;
/* Client-side matrix stack or NULL if none */
CoglMatrixMode matrix_mode;
CoglMatrixStack *modelview_stack;
/* Cache of inverse projection matrix */
float inverse_projection[16];
/* Materials */
CoglHandle default_material;
CoglHandle source_material;
/* Textures */
CoglHandle default_gl_texture_2d_tex;
CoglHandle default_gl_texture_rect_tex;
/* Batching geometry... */
/* We journal the texture rectangles we want to submit to OpenGL so
* we have an oppertunity to optimise the final order so that we
* can batch things together. */
GArray *journal;
GArray *logged_vertices;
GArray *polygon_vertices;
/* Some simple caching, to minimize state changes... */
CoglHandle current_material;
gulong current_material_flags;
GArray *current_layers;
guint n_texcoord_arrays_enabled;
/* Framebuffer objects */
GSList *draw_buffer_stack;
/* Clip stack */
CoglClipStackState clip;
/* Primitives */
floatVec2 path_start;
floatVec2 path_pen;
GArray *path_nodes;
guint last_path;
floatVec2 path_nodes_min;
floatVec2 path_nodes_max;
CoglHandle stencil_material;
/* Pre-generated VBOs containing indices to generate GL_TRIANGLES
out of a vertex array of quads */
CoglHandle quad_indices_byte;
guint quad_indices_short_len;
CoglHandle quad_indices_short;
/* Relying on glext.h to define these */
COGL_PFNGLGENRENDERBUFFERSEXTPROC pf_glGenRenderbuffersEXT;
COGL_PFNGLDELETERENDERBUFFERSEXTPROC pf_glDeleteRenderbuffersEXT;
COGL_PFNGLBINDRENDERBUFFEREXTPROC pf_glBindRenderbufferEXT;
COGL_PFNGLRENDERBUFFERSTORAGEEXTPROC pf_glRenderbufferStorageEXT;
COGL_PFNGLGENFRAMEBUFFERSEXTPROC pf_glGenFramebuffersEXT;
COGL_PFNGLBINDFRAMEBUFFEREXTPROC pf_glBindFramebufferEXT;
COGL_PFNGLFRAMEBUFFERTEXTURE2DEXTPROC pf_glFramebufferTexture2DEXT;
COGL_PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC pf_glFramebufferRenderbufferEXT;
COGL_PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC pf_glCheckFramebufferStatusEXT;
COGL_PFNGLDELETEFRAMEBUFFERSEXTPROC pf_glDeleteFramebuffersEXT;
COGL_PFNGLBLITFRAMEBUFFEREXTPROC pf_glBlitFramebufferEXT;
COGL_PFNGLRENDERBUFFERSTORAGEMULTISAMPLEEXTPROC pf_glRenderbufferStorageMultisampleEXT;
COGL_PFNGLGENERATEMIPMAPEXTPROC pf_glGenerateMipmapEXT;
COGL_PFNGLCREATEPROGRAMOBJECTARBPROC pf_glCreateProgramObjectARB;
COGL_PFNGLCREATESHADEROBJECTARBPROC pf_glCreateShaderObjectARB;
COGL_PFNGLSHADERSOURCEARBPROC pf_glShaderSourceARB;
COGL_PFNGLCOMPILESHADERARBPROC pf_glCompileShaderARB;
COGL_PFNGLATTACHOBJECTARBPROC pf_glAttachObjectARB;
COGL_PFNGLLINKPROGRAMARBPROC pf_glLinkProgramARB;
COGL_PFNGLUSEPROGRAMOBJECTARBPROC pf_glUseProgramObjectARB;
COGL_PFNGLGETUNIFORMLOCATIONARBPROC pf_glGetUniformLocationARB;
COGL_PFNGLDELETEOBJECTARBPROC pf_glDeleteObjectARB;
COGL_PFNGLGETINFOLOGARBPROC pf_glGetInfoLogARB;
COGL_PFNGLGETOBJECTPARAMETERIVARBPROC pf_glGetObjectParameterivARB;
COGL_PFNGLVERTEXATTRIBPOINTERARBPROC pf_glVertexAttribPointerARB;
COGL_PFNGLENABLEVERTEXATTRIBARRAYARBPROC pf_glEnableVertexAttribArrayARB;
COGL_PFNGLDISABLEVERTEXATTRIBARRAYARBPROC pf_glDisableVertexAttribArrayARB;
COGL_PFNGLGENBUFFERSARBPROC pf_glGenBuffersARB;
COGL_PFNGLBINDBUFFERARBPROC pf_glBindBufferARB;
COGL_PFNGLBUFFERDATAARBPROC pf_glBufferDataARB;
COGL_PFNGLBUFFERSUBDATAARBPROC pf_glBufferSubDataARB;
COGL_PFNGLMAPBUFFERARBPROC pf_glMapBufferARB;
COGL_PFNGLUNMAPBUFFERARBPROC pf_glUnmapBufferARB;
COGL_PFNGLDELETEBUFFERSARBPROC pf_glDeleteBuffersARB;
COGL_PFNGLUNIFORM1FARBPROC pf_glUniform1fARB;
COGL_PFNGLUNIFORM2FARBPROC pf_glUniform2fARB;
COGL_PFNGLUNIFORM3FARBPROC pf_glUniform3fARB;
COGL_PFNGLUNIFORM4FARBPROC pf_glUniform4fARB;
COGL_PFNGLUNIFORM1FVARBPROC pf_glUniform1fvARB;
COGL_PFNGLUNIFORM2FVARBPROC pf_glUniform2fvARB;
COGL_PFNGLUNIFORM3FVARBPROC pf_glUniform3fvARB;
COGL_PFNGLUNIFORM4FVARBPROC pf_glUniform4fvARB;
COGL_PFNGLUNIFORM1IARBPROC pf_glUniform1iARB;
COGL_PFNGLUNIFORM2IARBPROC pf_glUniform2iARB;
COGL_PFNGLUNIFORM3IARBPROC pf_glUniform3iARB;
COGL_PFNGLUNIFORM4IARBPROC pf_glUniform4iARB;
COGL_PFNGLUNIFORM1IVARBPROC pf_glUniform1ivARB;
COGL_PFNGLUNIFORM2IVARBPROC pf_glUniform2ivARB;
COGL_PFNGLUNIFORM3IVARBPROC pf_glUniform3ivARB;
COGL_PFNGLUNIFORM4IVARBPROC pf_glUniform4ivARB;
COGL_PFNGLUNIFORMMATRIX2FVARBPROC pf_glUniformMatrix2fvARB;
COGL_PFNGLUNIFORMMATRIX3FVARBPROC pf_glUniformMatrix3fvARB;
COGL_PFNGLUNIFORMMATRIX4FVARBPROC pf_glUniformMatrix4fvARB;
COGL_PFNGLDRAWRANGEELEMENTSPROC pf_glDrawRangeElements;
COGL_PFNGLACTIVETEXTUREPROC pf_glActiveTexture;
COGL_PFNGLCLIENTACTIVETEXTUREPROC pf_glClientActiveTexture;
COGL_PFNGLBLENDEQUATIONPROC pf_glBlendEquation;
COGL_PFNGLBLENDCOLORPROC pf_glBlendColor;
COGL_PFNGLBLENDFUNCSEPARATEPROC pf_glBlendFuncSeparate;
COGL_PFNGLBLENDEQUATIONSEPARATEPROC pf_glBlendEquationSeparate;
} 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 */
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