1a5a4df326
Instead of having a single journal per context, we now have a CoglJournal object for each CoglFramebuffer. This means we now don't have to flush the journal when switching/pushing/popping between different framebuffers so for example a Clutter scene that involves some ClutterEffect actors that transiently redirect to an FBO can still be batched. This also allows us to track state in the journal that relates to the current frame of its associated framebuffer which we'll need for our optimization for using the CPU to handle reading a single pixel back from a framebuffer when we know the whole scene is currently comprised of simple rectangles in a journal.
72 lines
2.2 KiB
C
72 lines
2.2 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 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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#ifndef __COGL_JOURNAL_PRIVATE_H
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#define __COGL_JOURNAL_PRIVATE_H
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#include "cogl-handle.h"
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#include "cogl-clip-stack.h"
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typedef struct _CoglJournal
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{
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CoglObject _parent;
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GArray *entries;
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GArray *vertices;
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size_t needed_vbo_len;
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} CoglJournal;
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/* To improve batching of geometry when submitting vertices to OpenGL we
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* log the texture rectangles we want to draw to a journal, so when we
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* later flush the journal we aim to batch data, and gl draw calls. */
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typedef struct _CoglJournalEntry
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{
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CoglPipeline *pipeline;
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int n_layers;
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CoglMatrix model_view;
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CoglClipStack *clip_stack;
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/* Offset into ctx->logged_vertices */
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size_t array_offset;
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/* XXX: These entries are pretty big now considering the padding in
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* CoglPipelineFlushOptions and CoglMatrix, so we might need to optimize this
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* later. */
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} CoglJournalEntry;
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CoglJournal *
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_cogl_journal_new (void);
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void
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_cogl_journal_log_quad (CoglJournal *journal,
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const float *position,
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CoglPipeline *pipeline,
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int n_layers,
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CoglHandle layer0_override_texture,
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const float *tex_coords,
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unsigned int tex_coords_len);
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void
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_cogl_journal_flush (CoglJournal *journal,
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CoglFramebuffer *framebuffer);
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#endif /* __COGL_JOURNAL_PRIVATE_H */
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