mutter/cogl/driver/nop/cogl-texture-2d-nop.c
Robert Bragg ae713a32d0 Adds a NOP driver
This adds a new "nop" driver that does nothing. This can be selected at
runtime either with the COGL_DRIVER=nop environment variable or by
passing COGL_DRIVER_NOP to cogl_renderer_set_driver()

Adding the nop driver gives us a way to test workloads without any
driver and hardware overheads which can help us understand how Cogl's
state tracking performs in isolation.

Having a nop driver can also serve as an shell/outline for creating
other drivers later.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 90587418233b6438290741d80aedf193ae660cad)
2013-01-22 17:47:59 +00:00

157 lines
4.8 KiB
C

/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2009,2010,2011,2012 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/>.
*
*
*
* Authors:
* Neil Roberts <neil@linux.intel.com>
* Robert Bragg <robert@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "cogl-private.h"
#include "cogl-texture-2d-nop-private.h"
#include "cogl-texture-2d-private.h"
#include "cogl-error-private.h"
void
_cogl_texture_2d_nop_free (CoglTexture2D *tex_2d)
{
}
CoglBool
_cogl_texture_2d_nop_can_create (CoglContext *ctx,
int width,
int height,
CoglPixelFormat internal_format)
{
return TRUE;
}
void
_cogl_texture_2d_nop_init (CoglTexture2D *tex_2d)
{
}
CoglTexture2D *
_cogl_texture_2d_nop_new_with_size (CoglContext *ctx,
int width,
int height,
CoglPixelFormat internal_format,
CoglError **error)
{
return _cogl_texture_2d_create_base (ctx,
width, height,
internal_format);
}
CoglTexture2D *
_cogl_texture_2d_nop_new_from_bitmap (CoglBitmap *bmp,
CoglPixelFormat internal_format,
CoglError **error)
{
return _cogl_texture_2d_nop_new_with_size (_cogl_bitmap_get_context (bmp),
cogl_bitmap_get_width (bmp),
cogl_bitmap_get_height (bmp),
internal_format,
error);
}
#if defined (COGL_HAS_EGL_SUPPORT) && defined (EGL_KHR_image_base)
CoglTexture2D *
_cogl_egl_texture_2d_nop_new_from_image (CoglContext *ctx,
int width,
int height,
CoglPixelFormat format,
EGLImageKHR image,
CoglError **error)
{
_cogl_set_error (error,
COGL_SYSTEM_ERROR,
COGL_SYSTEM_ERROR_UNSUPPORTED,
"Creating 2D textures from an EGLImage isn't "
"supported by the NOP backend");
return NULL;
}
#endif
void
_cogl_texture_2d_nop_flush_legacy_texobj_filters (CoglTexture *tex,
GLenum min_filter,
GLenum mag_filter)
{
}
void
_cogl_texture_2d_nop_flush_legacy_texobj_wrap_modes (CoglTexture *tex,
GLenum wrap_mode_s,
GLenum wrap_mode_t,
GLenum wrap_mode_p)
{
}
void
_cogl_texture_2d_nop_copy_from_framebuffer (CoglTexture2D *tex_2d,
CoglFramebuffer *src_fb,
int dst_x,
int dst_y,
int src_x,
int src_y,
int width,
int height)
{
}
unsigned int
_cogl_texture_2d_nop_get_gl_handle (CoglTexture2D *tex_2d)
{
return 0;
}
void
_cogl_texture_2d_nop_generate_mipmap (CoglTexture2D *tex_2d)
{
}
void
_cogl_texture_2d_nop_copy_from_bitmap (CoglTexture2D *tex_2d,
CoglBitmap *bitmap,
int dst_x,
int dst_y,
int src_x,
int src_y,
int width,
int height)
{
}
void
_cogl_texture_2d_nop_get_data (CoglTexture2D *tex_2d,
CoglPixelFormat format,
size_t rowstride,
uint8_t *data)
{
}