mirror of
https://github.com/brl/mutter.git
synced 2024-12-28 22:02:14 +00:00
dbff3a357e
This adds an internal function to set the backface culling state on a pipeline. This includes properties to set the culling mode (front, back or both) and also to set which face is considered the front (COGL_WINDING_CLOCKWISE or COGL_WINDING_COUNTER_CLOCKWISE). The actual front face flushed to GL depends on whether we are rendering to an offscreen buffer or not. This means that when changing between on- and off- screen framebuffers it now checks whether the last flushed pipeline has backface culling enabled and forces a reflush of the cull face state if so. The backface culling is now set on a pipeline as part of the legacy state. This is important because some code in Cogl assumes it can flush a temporary pipeline to revert to a known state, but previously this wouldn't disable backface culling so things such as flushing the clip stack could get confused. Reviewed-by: Robert Bragg <robert@linux.intel.com>
141 lines
3.8 KiB
C
141 lines
3.8 KiB
C
/*
|
|
* Cogl
|
|
*
|
|
* An object oriented GL/GLES Abstraction/Utility Layer
|
|
*
|
|
* Copyright (C) 2007,2008,2009,2010 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, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*
|
|
*/
|
|
|
|
#ifndef __COGL_INTERNAL_H
|
|
#define __COGL_INTERNAL_H
|
|
|
|
#include "cogl.h"
|
|
#include "cogl-matrix-stack.h"
|
|
#include "cogl-bitmask.h"
|
|
|
|
#ifdef COGL_HAS_XLIB_SUPPORT
|
|
#include <X11/Xutil.h>
|
|
#endif
|
|
|
|
typedef enum {
|
|
COGL_BOXED_NONE,
|
|
COGL_BOXED_INT,
|
|
COGL_BOXED_FLOAT,
|
|
COGL_BOXED_MATRIX
|
|
} CoglBoxedType;
|
|
|
|
typedef struct _CoglBoxedValue
|
|
{
|
|
CoglBoxedType type;
|
|
int size, count;
|
|
gboolean transpose;
|
|
|
|
union {
|
|
float float_value[4];
|
|
int int_value[4];
|
|
float matrix[16];
|
|
float *float_array;
|
|
int *int_array;
|
|
void *array;
|
|
} v;
|
|
} CoglBoxedValue;
|
|
|
|
#ifdef COGL_GL_DEBUG
|
|
|
|
const char *
|
|
cogl_gl_error_to_string (GLenum error_code);
|
|
|
|
#define GE(ctx, x) G_STMT_START { \
|
|
GLenum __err; \
|
|
(ctx)->x; \
|
|
while ((__err = (ctx)->glGetError ()) != GL_NO_ERROR) \
|
|
{ \
|
|
g_warning ("%s: GL error (%d): %s\n", \
|
|
G_STRLOC, \
|
|
__err, \
|
|
cogl_gl_error_to_string (__err)); \
|
|
} } G_STMT_END
|
|
|
|
#define GE_RET(ret, ctx, x) G_STMT_START { \
|
|
GLenum __err; \
|
|
ret = (ctx)->x; \
|
|
while ((__err = (ctx)->glGetError ()) != GL_NO_ERROR) \
|
|
{ \
|
|
g_warning ("%s: GL error (%d): %s\n", \
|
|
G_STRLOC, \
|
|
__err, \
|
|
cogl_gl_error_to_string (__err)); \
|
|
} } G_STMT_END
|
|
|
|
#else /* !COGL_GL_DEBUG */
|
|
|
|
#define GE(ctx, x) ((ctx)->x)
|
|
#define GE_RET(ret, ctx, x) (ret = ((ctx)->x))
|
|
|
|
#endif /* COGL_GL_DEBUG */
|
|
|
|
#define COGL_ENABLE_ALPHA_TEST (1<<1)
|
|
#define COGL_ENABLE_VERTEX_ARRAY (1<<2)
|
|
#define COGL_ENABLE_COLOR_ARRAY (1<<3)
|
|
|
|
int
|
|
_cogl_get_format_bpp (CoglPixelFormat format);
|
|
|
|
void
|
|
_cogl_enable (unsigned long flags);
|
|
|
|
unsigned long
|
|
_cogl_get_enable (void);
|
|
|
|
void
|
|
_cogl_transform_point (const CoglMatrix *matrix_mv,
|
|
const CoglMatrix *matrix_p,
|
|
const float *viewport,
|
|
float *x,
|
|
float *y);
|
|
|
|
#define COGL_DRIVER_ERROR (_cogl_driver_error_quark ())
|
|
|
|
typedef enum { /*< prefix=COGL_DRIVER_ERROR >*/
|
|
COGL_DRIVER_ERROR_UNKNOWN_VERSION,
|
|
COGL_DRIVER_ERROR_INVALID_VERSION,
|
|
COGL_DRIVER_ERROR_NO_SUITABLE_DRIVER_FOUND,
|
|
COGL_DRIVER_ERROR_FAILED_TO_LOAD_LIBRARY
|
|
} CoglDriverError;
|
|
|
|
typedef enum
|
|
{
|
|
COGL_DRIVER_GL,
|
|
COGL_DRIVER_GLES1,
|
|
COGL_DRIVER_GLES2
|
|
} CoglDriver;
|
|
|
|
typedef enum
|
|
{
|
|
COGL_PRIVATE_FEATURE_TEXTURE_2D_FROM_EGL_IMAGE = 1L<<0,
|
|
COGL_PRIVATE_FEATURE_MESA_PACK_INVERT = 1L<<1
|
|
} CoglPrivateFeatureFlags;
|
|
|
|
gboolean
|
|
_cogl_check_extension (const char *name, const char *ext);
|
|
|
|
GQuark
|
|
_cogl_driver_error_quark (void);
|
|
|
|
#endif /* __COGL_INTERNAL_H */
|