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mutter/cogl/driver/nop/cogl-driver-nop.c

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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)
2012-09-12 17:39:46 -04:00
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 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/>.
*
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "cogl-private.h"
#include "cogl-context-private.h"
#include "cogl-feature-private.h"
#include "cogl-renderer-private.h"
#include "cogl-error-private.h"
#include "cogl-framebuffer-nop-private.h"
#include "cogl-texture-2d-nop-private.h"
#include "cogl-attribute-nop-private.h"
#include "cogl-clip-stack-nop-private.h"
static CoglBool
_cogl_driver_update_features (CoglContext *ctx,
CoglError **error)
{
/* _cogl_gpu_info_init (ctx, &ctx->gpu); */
Use COGL_FLAGS_* for the context's private feature flags Previously the private feature flags were stored in an enum and we already had 31 flags. Adding the 32nd flag would presumably make it add -2³¹ as one of the values which might cause problems. To avoid this we'll just use an fixed-size array of longs and use indices for the enum values like we do for the public features. A slight complication with this is in the CoglDriverDescription where we were previously using a static intialised value to describe the set of features that the driver supports. We can't easily do this with the flags array so instead the features are stored in a fixed-size array of indices. Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit d94cb984e3c93630f3c2e6e3be9d189672aa20f3) Conflicts: cogl/cogl-context-private.h cogl/cogl-context.c cogl/cogl-private.h cogl/cogl-renderer.c cogl/driver/gl/cogl-pipeline-opengl.c cogl/driver/gl/gl/cogl-driver-gl.c cogl/driver/gl/gl/cogl-pipeline-progend-fixed-arbfp.c cogl/driver/gl/gles/cogl-driver-gles.c cogl/driver/nop/cogl-driver-nop.c
2013-11-25 11:11:36 -05:00
memset (ctx->private_features, 0, sizeof (ctx->private_features));
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)
2012-09-12 17:39:46 -04:00
ctx->feature_flags = 0;
return TRUE;
}
const CoglDriverVtable
_cogl_driver_nop =
{
NULL, /* pixel_format_from_gl_internal */
NULL, /* pixel_format_to_gl */
_cogl_driver_update_features,
_cogl_offscreen_nop_allocate,
_cogl_offscreen_nop_free,
_cogl_framebuffer_nop_flush_state,
_cogl_framebuffer_nop_clear,
_cogl_framebuffer_nop_query_bits,
_cogl_framebuffer_nop_finish,
_cogl_framebuffer_nop_discard_buffers,
_cogl_framebuffer_nop_draw_attributes,
_cogl_framebuffer_nop_draw_indexed_attributes,
framebuffer: split out GL read_pixels code This moves the direct use of GL in cogl-framebuffer.c for handling cogl_framebuffer_read_pixels_into_bitmap() into driver/gl/cogl-framebuffer-gl.c and adds a ->framebuffer_read_pixels_into_bitmap vfunc to CoglDriverVtable. Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit 2f893054d6754e6bc7983f061b27c7858f1a593c)
2012-11-20 15:05:05 -05:00
_cogl_framebuffer_nop_read_pixels_into_bitmap,
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)
2012-09-12 17:39:46 -04:00
_cogl_texture_2d_nop_free,
_cogl_texture_2d_nop_can_create,
_cogl_texture_2d_nop_init,
Allow lazy texture storage allocation Consistent with how we lazily allocate framebuffers this patch allows us to instantiate textures but still specify constraints and requirements before allocating storage so that we can be sure to allocate the most appropriate/efficient storage. This adds a cogl_texture_allocate() function that is analogous to cogl_framebuffer_allocate() which can optionally be called to explicitly allocate storage and catch any errors. If this function isn't used explicitly then Cogl will implicitly ensure textures are allocated before the storage is needed. It is generally recommended to rely on lazy storage allocation or at least perform explicit allocation as late as possible so Cogl can be fully informed about the best way to allocate storage. Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit 1fa7c0f10a8a03043e3c75cb079a49625df098b7) Note: This reverts the cogl_texture_rectangle_new_with_size API change that dropped the CoglError argument and keeps the semantics of allocating the texture immediately. This is because Mutter currently uses this API so we will probably look at updating this later once we have a corresponding Mutter patch prepared. The other API changes were kept since they only affected experimental api.
2012-11-22 18:01:08 -05:00
_cogl_texture_2d_nop_allocate,
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)
2012-09-12 17:39:46 -04:00
_cogl_texture_2d_nop_copy_from_framebuffer,
_cogl_texture_2d_nop_get_gl_handle,
_cogl_texture_2d_nop_generate_mipmap,
_cogl_texture_2d_nop_copy_from_bitmap,
NULL, /* texture_2d_get_data */
_cogl_nop_flush_attributes_state,
_cogl_clip_stack_nop_flush,
};
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