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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)
111 lines
3.2 KiB
C
111 lines
3.2 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) 2007,2008,2009,2012 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
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* <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 "cogl-framebuffer-nop-private.h"
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#include <glib.h>
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void
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_cogl_framebuffer_nop_flush_state (CoglFramebuffer *draw_buffer,
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CoglFramebuffer *read_buffer,
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CoglFramebufferState state)
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{
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}
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CoglBool
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_cogl_offscreen_nop_allocate (CoglOffscreen *offscreen,
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CoglError **error)
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{
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return TRUE;
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}
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void
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_cogl_offscreen_nop_free (CoglOffscreen *offscreen)
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{
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}
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void
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_cogl_framebuffer_nop_clear (CoglFramebuffer *framebuffer,
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unsigned long buffers,
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float red,
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float green,
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float blue,
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float alpha)
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{
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}
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void
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_cogl_framebuffer_nop_query_bits (CoglFramebuffer *framebuffer,
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int *red,
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int *green,
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int *blue,
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int *alpha)
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{
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*red = 0;
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*green = 0;
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*blue = 0;
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*alpha = 0;
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}
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void
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_cogl_framebuffer_nop_finish (CoglFramebuffer *framebuffer)
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{
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}
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void
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_cogl_framebuffer_nop_discard_buffers (CoglFramebuffer *framebuffer,
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unsigned long buffers)
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{
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}
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void
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_cogl_framebuffer_nop_draw_attributes (CoglFramebuffer *framebuffer,
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CoglPipeline *pipeline,
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CoglVerticesMode mode,
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int first_vertex,
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int n_vertices,
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CoglAttribute **attributes,
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int n_attributes,
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CoglDrawFlags flags)
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{
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}
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void
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_cogl_framebuffer_nop_draw_indexed_attributes (CoglFramebuffer *framebuffer,
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CoglPipeline *pipeline,
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CoglVerticesMode mode,
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int first_vertex,
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int n_vertices,
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CoglIndices *indices,
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CoglAttribute **attributes,
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int n_attributes,
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CoglDrawFlags flags)
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{
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}
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