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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2005 Blender Foundation.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): Brecht Van Lommel.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file GPU_framebuffer.h
* \ingroup gpu
*/
#ifndef __GPU_FRAMEBUFFER_H__
#define __GPU_FRAMEBUFFER_H__
#ifdef __cplusplus
extern "C" {
#endif
typedef struct GPUFrameBuffer GPUFrameBuffer;
typedef struct GPUOffScreen GPUOffScreen;
struct GPUTexture;
/* GPU Framebuffer
* - this is a wrapper for an OpenGL framebuffer object (FBO). in practice
* multiple FBO's may be created, to get around limitations on the number
* of attached textures and the dimension requirements.
* - after any of the GPU_framebuffer_* functions, GPU_framebuffer_restore must
* be called before rendering to the window framebuffer again */
void GPU_texture_bind_as_framebuffer(struct GPUTexture *tex);
GPUFrameBuffer *GPU_framebuffer_create(void);
int GPU_framebuffer_texture_attach(GPUFrameBuffer *fb, struct GPUTexture *tex, int slot, char err_out[256]);
void GPU_framebuffer_texture_detach(struct GPUTexture *tex);
void GPU_framebuffer_slots_bind(GPUFrameBuffer *fb, int slot);
void GPU_framebuffer_texture_unbind(GPUFrameBuffer *fb, struct GPUTexture *tex);
void GPU_framebuffer_free(GPUFrameBuffer *fb);
bool GPU_framebuffer_check_valid(GPUFrameBuffer *fb, char err_out[256]);
void GPU_framebuffer_bind_no_save(GPUFrameBuffer *fb, int slot);
bool GPU_framebuffer_bound(GPUFrameBuffer *fb);
void GPU_framebuffer_restore(void);
void GPU_framebuffer_blur(
GPUFrameBuffer *fb, struct GPUTexture *tex,
GPUFrameBuffer *blurfb, struct GPUTexture *blurtex);
/* GPU OffScreen
* - wrapper around framebuffer and texture for simple offscreen drawing
* - changes size if graphics card can't support it */
GPUOffScreen *GPU_offscreen_create(int width, int height, int samples, char err_out[256]);
void GPU_offscreen_free(GPUOffScreen *ofs);
void GPU_offscreen_bind(GPUOffScreen *ofs, bool save);
void GPU_offscreen_unbind(GPUOffScreen *ofs, bool restore);
void GPU_offscreen_read_pixels(GPUOffScreen *ofs, int type, void *pixels);
int GPU_offscreen_width(const GPUOffScreen *ofs);
int GPU_offscreen_height(const GPUOffScreen *ofs);
int GPU_offscreen_color_texture(const GPUOffScreen *ofs);
#ifdef __cplusplus
}
#endif
#endif /* __GPU_FRAMEBUFFER_H__ */
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