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3a041ef41b
This tweaks the ordering of some struct members in some of the more important structs so that the compiler won't insert wasted padding to avoid breaking the alignment. Some members that were previously unsigned long have been changed to unsigned int. These members need to be able to fit in 32-bits to run on 32-bit machines anyway so there's no point in having them extend to 64-bit on 64-bit machines. This doesn't affect the public API. Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit b721af236680005464e39f7f4dd11381d95efb16)
112 lines
3.7 KiB
C
112 lines
3.7 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-texture.h"
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#include "cogl-object-private.h"
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#include "cogl-clip-stack.h"
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#define COGL_JOURNAL_VBO_POOL_SIZE 8
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typedef struct _CoglJournal
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{
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CoglObject _parent;
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/* A pointer the framebuffer that is using this journal. This is
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only valid when the journal is not empty. It *does* take a
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reference on the framebuffer. Although this creates a circular
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reference, the framebuffer has special code to handle the case
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where the journal is the only thing holding a reference and it
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will cause the journal to flush */
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CoglFramebuffer *framebuffer;
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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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/* A pool of attribute buffers is used so that we can avoid repeatedly
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reallocating buffers. Only one of these buffers at a time will be
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used by Cogl but we keep more than one alive anyway in case the
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GL driver is internally using the buffer and it would have to
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allocate a new one when we start writing to it */
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CoglAttributeBuffer *vbo_pool[COGL_JOURNAL_VBO_POOL_SIZE];
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/* The next vbo to use from the pool. We just cycle through them in
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order */
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unsigned int next_vbo_in_pool;
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int fast_read_pixel_count;
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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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CoglMatrixEntry *modelview_entry;
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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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int n_layers;
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} CoglJournalEntry;
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CoglJournal *
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_cogl_journal_new (CoglFramebuffer *framebuffer);
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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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CoglTexture *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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void
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_cogl_journal_discard (CoglJournal *journal);
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CoglBool
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_cogl_journal_all_entries_within_bounds (CoglJournal *journal,
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float clip_x0,
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float clip_y0,
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float clip_x1,
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float clip_y1);
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CoglBool
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_cogl_journal_try_read_pixel (CoglJournal *journal,
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int x,
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int y,
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CoglBitmap *bitmap,
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CoglBool *found_intersection);
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CoglBool
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_cogl_is_journal (void *object);
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#endif /* __COGL_JOURNAL_PRIVATE_H */
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