mirror of
https://github.com/brl/mutter.git
synced 2024-11-27 10:30:47 -05:00
122 lines
4.1 KiB
C
122 lines
4.1 KiB
C
/*
|
|
* Cogl
|
|
*
|
|
* A Low Level GPU Graphics and Utilities API
|
|
*
|
|
* Copyright (C) 2007,2008,2009 Intel Corporation.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person
|
|
* obtaining a copy of this software and associated documentation
|
|
* files (the "Software"), to deal in the Software without
|
|
* restriction, including without limitation the rights to use, copy,
|
|
* modify, merge, publish, distribute, sublicense, and/or sell copies
|
|
* of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be
|
|
* included in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*
|
|
*
|
|
*/
|
|
|
|
#ifndef __COGL_JOURNAL_PRIVATE_H
|
|
#define __COGL_JOURNAL_PRIVATE_H
|
|
|
|
#include "cogl-texture.h"
|
|
#include "cogl-object-private.h"
|
|
#include "cogl-clip-stack.h"
|
|
#include "cogl-fence-private.h"
|
|
|
|
#define COGL_JOURNAL_VBO_POOL_SIZE 8
|
|
|
|
typedef struct _CoglJournal
|
|
{
|
|
CoglObject _parent;
|
|
|
|
/* A pointer the framebuffer that is using this journal. This is
|
|
only valid when the journal is not empty. It *does* take a
|
|
reference on the framebuffer. Although this creates a circular
|
|
reference, the framebuffer has special code to handle the case
|
|
where the journal is the only thing holding a reference and it
|
|
will cause the journal to flush */
|
|
CoglFramebuffer *framebuffer;
|
|
|
|
GArray *entries;
|
|
GArray *vertices;
|
|
size_t needed_vbo_len;
|
|
|
|
/* A pool of attribute buffers is used so that we can avoid repeatedly
|
|
reallocating buffers. Only one of these buffers at a time will be
|
|
used by Cogl but we keep more than one alive anyway in case the
|
|
GL driver is internally using the buffer and it would have to
|
|
allocate a new one when we start writing to it */
|
|
CoglAttributeBuffer *vbo_pool[COGL_JOURNAL_VBO_POOL_SIZE];
|
|
/* The next vbo to use from the pool. We just cycle through them in
|
|
order */
|
|
unsigned int next_vbo_in_pool;
|
|
|
|
int fast_read_pixel_count;
|
|
|
|
CoglList pending_fences;
|
|
|
|
} CoglJournal;
|
|
|
|
/* To improve batching of geometry when submitting vertices to OpenGL we
|
|
* log the texture rectangles we want to draw to a journal, so when we
|
|
* later flush the journal we aim to batch data, and gl draw calls. */
|
|
typedef struct _CoglJournalEntry
|
|
{
|
|
CoglPipeline *pipeline;
|
|
CoglMatrixEntry *modelview_entry;
|
|
CoglClipStack *clip_stack;
|
|
/* Offset into ctx->logged_vertices */
|
|
size_t array_offset;
|
|
int n_layers;
|
|
} CoglJournalEntry;
|
|
|
|
CoglJournal *
|
|
_cogl_journal_new (CoglFramebuffer *framebuffer);
|
|
|
|
void
|
|
_cogl_journal_log_quad (CoglJournal *journal,
|
|
const float *position,
|
|
CoglPipeline *pipeline,
|
|
int n_layers,
|
|
CoglTexture *layer0_override_texture,
|
|
const float *tex_coords,
|
|
unsigned int tex_coords_len);
|
|
|
|
void
|
|
_cogl_journal_flush (CoglJournal *journal);
|
|
|
|
void
|
|
_cogl_journal_discard (CoglJournal *journal);
|
|
|
|
CoglBool
|
|
_cogl_journal_all_entries_within_bounds (CoglJournal *journal,
|
|
float clip_x0,
|
|
float clip_y0,
|
|
float clip_x1,
|
|
float clip_y1);
|
|
|
|
CoglBool
|
|
_cogl_journal_try_read_pixel (CoglJournal *journal,
|
|
int x,
|
|
int y,
|
|
CoglBitmap *bitmap,
|
|
CoglBool *found_intersection);
|
|
|
|
CoglBool
|
|
_cogl_is_journal (void *object);
|
|
|
|
#endif /* __COGL_JOURNAL_PRIVATE_H */
|