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ae713a32d0
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)
84 lines
2.5 KiB
C
84 lines
2.5 KiB
C
/*
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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) 2012 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, see <http://www.gnu.org/licenses/>.
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*
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include "cogl-private.h"
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#include "cogl-internal.h"
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#include "cogl-context-private.h"
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#include "cogl-feature-private.h"
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#include "cogl-renderer-private.h"
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#include "cogl-error-private.h"
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#include "cogl-framebuffer-nop-private.h"
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#include "cogl-texture-2d-nop-private.h"
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#include "cogl-attribute-nop-private.h"
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#include "cogl-clip-stack-nop-private.h"
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static CoglBool
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_cogl_driver_update_features (CoglContext *ctx,
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CoglError **error)
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{
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/* _cogl_gpu_info_init (ctx, &ctx->gpu); */
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ctx->private_feature_flags = 0;
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ctx->feature_flags = 0;
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return TRUE;
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}
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const CoglDriverVtable
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_cogl_driver_nop =
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{
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NULL, /* pixel_format_from_gl_internal */
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NULL, /* pixel_format_to_gl */
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_cogl_driver_update_features,
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_cogl_offscreen_nop_allocate,
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_cogl_offscreen_nop_free,
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_cogl_framebuffer_nop_flush_state,
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_cogl_framebuffer_nop_clear,
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_cogl_framebuffer_nop_query_bits,
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_cogl_framebuffer_nop_finish,
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_cogl_framebuffer_nop_discard_buffers,
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_cogl_framebuffer_nop_draw_attributes,
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_cogl_framebuffer_nop_draw_indexed_attributes,
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_cogl_texture_2d_nop_free,
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_cogl_texture_2d_nop_can_create,
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_cogl_texture_2d_nop_init,
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_cogl_texture_2d_nop_new_with_size,
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_cogl_texture_2d_nop_new_from_bitmap,
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#if defined (COGL_HAS_EGL_SUPPORT) && defined (EGL_KHR_image_base)
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_cogl_egl_texture_2d_nop_new_from_image,
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#endif
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_cogl_texture_2d_nop_copy_from_framebuffer,
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_cogl_texture_2d_nop_get_gl_handle,
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_cogl_texture_2d_nop_generate_mipmap,
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_cogl_texture_2d_nop_copy_from_bitmap,
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NULL, /* texture_2d_get_data */
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_cogl_nop_flush_attributes_state,
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_cogl_clip_stack_nop_flush,
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};
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