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https://github.com/brl/mutter.git
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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.
283 lines
7.0 KiB
C
283 lines
7.0 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) 2007,2008,2009,2010 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 <math.h>
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#include <glib.h>
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#include "cogl.h"
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#include "cogl-clip-stack.h"
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#include "cogl-clip-state.h"
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#include "cogl-context.h"
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#include "cogl-internal.h"
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#include "cogl-framebuffer-private.h"
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#include "cogl-journal-private.h"
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#include "cogl-util.h"
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#include "cogl-matrix-private.h"
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void
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cogl_clip_push_window_rectangle (int x_offset,
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int y_offset,
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int width,
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int height)
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{
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CoglFramebuffer *framebuffer;
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CoglClipState *clip_state;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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framebuffer = _cogl_get_framebuffer ();
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clip_state = _cogl_framebuffer_get_clip_state (framebuffer);
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clip_state->stacks->data =
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_cogl_clip_stack_push_window_rectangle (clip_state->stacks->data,
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x_offset, y_offset,
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width, height);
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}
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/* XXX: This is deprecated API */
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void
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cogl_clip_push_window_rect (float x_offset,
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float y_offset,
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float width,
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float height)
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{
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cogl_clip_push_window_rectangle (x_offset, y_offset, width, height);
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}
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void
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cogl_clip_push_rectangle (float x_1,
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float y_1,
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float x_2,
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float y_2)
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{
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CoglFramebuffer *framebuffer;
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CoglClipState *clip_state;
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CoglMatrix modelview_matrix;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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framebuffer = _cogl_get_framebuffer ();
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clip_state = _cogl_framebuffer_get_clip_state (framebuffer);
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cogl_get_modelview_matrix (&modelview_matrix);
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clip_state->stacks->data =
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_cogl_clip_stack_push_rectangle (clip_state->stacks->data,
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x_1, y_1, x_2, y_2,
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&modelview_matrix);
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}
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/* XXX: Deprecated API */
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void
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cogl_clip_push (float x_offset,
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float y_offset,
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float width,
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float height)
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{
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cogl_clip_push_rectangle (x_offset,
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y_offset,
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x_offset + width,
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y_offset + height);
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}
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void
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cogl_clip_push_from_path_preserve (void)
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{
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CoglFramebuffer *framebuffer;
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CoglClipState *clip_state;
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CoglMatrix modelview_matrix;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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framebuffer = _cogl_get_framebuffer ();
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clip_state = _cogl_framebuffer_get_clip_state (framebuffer);
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cogl_get_modelview_matrix (&modelview_matrix);
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clip_state->stacks->data =
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_cogl_clip_stack_push_from_path (clip_state->stacks->data,
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ctx->current_path,
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&modelview_matrix);
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}
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void
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cogl_clip_push_from_path (void)
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{
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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cogl_clip_push_from_path_preserve ();
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cogl_object_unref (ctx->current_path);
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ctx->current_path = cogl2_path_new ();
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}
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static void
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_cogl_clip_pop_real (CoglClipState *clip_state)
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{
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clip_state->stacks->data = _cogl_clip_stack_pop (clip_state->stacks->data);
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}
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void
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cogl_clip_pop (void)
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{
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CoglFramebuffer *framebuffer;
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CoglClipState *clip_state;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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framebuffer = _cogl_get_framebuffer ();
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clip_state = _cogl_framebuffer_get_clip_state (framebuffer);
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_cogl_clip_pop_real (clip_state);
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}
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void
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_cogl_clip_state_flush (CoglClipState *clip_state)
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{
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/* Flush the topmost stack. The clip stack code will bail out early
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if this is already flushed */
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_cogl_clip_stack_flush (clip_state->stacks->data);
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}
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/* XXX: This should never have been made public API! */
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void
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cogl_clip_ensure (void)
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{
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CoglFramebuffer *framebuffer = _cogl_get_framebuffer ();
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CoglClipState *clip_state;
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clip_state = _cogl_framebuffer_get_clip_state (framebuffer);
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/* Flushing the clip state doesn't cause the journal to be
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flushed. This function may be being called by an external
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application however so it makes sense to flush the journal
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here */
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_cogl_framebuffer_flush_journal (framebuffer);
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_cogl_clip_state_flush (clip_state);
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}
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static void
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_cogl_clip_stack_save_real (CoglClipState *clip_state)
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{
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clip_state->stacks = g_slist_prepend (clip_state->stacks, NULL);
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}
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void
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cogl_clip_stack_save (void)
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{
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CoglFramebuffer *framebuffer;
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CoglClipState *clip_state;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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framebuffer = _cogl_get_framebuffer ();
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clip_state = _cogl_framebuffer_get_clip_state (framebuffer);
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_cogl_clip_stack_save_real (clip_state);
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}
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static void
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_cogl_clip_stack_restore_real (CoglClipState *clip_state)
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{
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CoglHandle stack;
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g_return_if_fail (clip_state->stacks != NULL);
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stack = clip_state->stacks->data;
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_cogl_clip_stack_unref (stack);
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/* Revert to an old stack */
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clip_state->stacks = g_slist_delete_link (clip_state->stacks,
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clip_state->stacks);
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}
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void
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cogl_clip_stack_restore (void)
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{
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CoglFramebuffer *framebuffer;
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CoglClipState *clip_state;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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framebuffer = _cogl_get_framebuffer ();
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clip_state = _cogl_framebuffer_get_clip_state (framebuffer);
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_cogl_clip_stack_restore_real (clip_state);
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}
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void
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_cogl_clip_state_init (CoglClipState *clip_state)
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{
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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clip_state->stacks = NULL;
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/* Add an intial stack */
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_cogl_clip_stack_save_real (clip_state);
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}
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void
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_cogl_clip_state_destroy (CoglClipState *clip_state)
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{
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/* Destroy all of the stacks */
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while (clip_state->stacks)
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_cogl_clip_stack_restore_real (clip_state);
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}
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CoglClipStack *
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_cogl_get_clip_stack (void)
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{
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CoglFramebuffer *framebuffer;
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CoglClipState *clip_state;
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_COGL_GET_CONTEXT (ctx, COGL_INVALID_HANDLE);
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framebuffer = _cogl_get_framebuffer ();
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clip_state = _cogl_framebuffer_get_clip_state (framebuffer);
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return clip_state->stacks->data;
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}
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void
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_cogl_set_clip_stack (CoglClipStack *stack)
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{
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CoglFramebuffer *framebuffer;
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CoglClipState *clip_state;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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framebuffer = _cogl_get_framebuffer ();
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clip_state = _cogl_framebuffer_get_clip_state (framebuffer);
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/* Replace the top of the stack of stacks */
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_cogl_clip_stack_ref (stack);
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_cogl_clip_stack_unref (clip_state->stacks->data);
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clip_state->stacks->data = stack;
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}
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