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/*
* 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) 2001-2002 by NaN Holding BV.
* All rights reserved.
*/
/** \file
* \ingroup editorui
*/
#ifndef __BIF_GLUTIL_H__
#define __BIF_GLUTIL_H__
#ifdef __cplusplus
extern "C" {
#endif
struct rcti;
struct ColorManagedDisplaySettings;
struct ColorManagedViewSettings;
struct ImBuf;
struct bContext;
typedef struct IMMDrawPixelsTexState {
struct GPUShader *shader;
unsigned int pos;
unsigned int texco;
bool do_shader_unbind;
} IMMDrawPixelsTexState;
/* To be used before calling immDrawPixelsTex
* Default shader is GPU_SHADER_2D_IMAGE_COLOR
* Returns a shader to be able to set uniforms */
IMMDrawPixelsTexState immDrawPixelsTexSetup(int builtin);
/**
* immDrawPixelsTex - Functions like a limited glDrawPixels, but actually draws the
* image using textures, which can be tremendously faster on low-end
* cards, and also avoids problems with the raster position being
* clipped when offscreen. Pixel unpacking parameters and
* the glPixelZoom values are _not_ respected.
*
* \attention Use immDrawPixelsTexSetup before calling this function.
*
* \attention This routine makes many assumptions: the rect data
* is expected to be in RGBA byte or float format, and the
* modelview and projection matrices are assumed to define a
* 1-to-1 mapping to screen space.
*/
void immDrawPixelsTex(IMMDrawPixelsTexState *state,
float x,
float y,
int img_w,
int img_h,
int format,
int type,
int zoomfilter,
void *rect,
float xzoom,
float yzoom,
float color[4]);
void immDrawPixelsTex_clipping(IMMDrawPixelsTexState *state,
float x,
float y,
int img_w,
int img_h,
int format,
int type,
int zoomfilter,
void *rect,
float clip_min_x,
float clip_min_y,
float clip_max_x,
float clip_max_y,
float xzoom,
float yzoom,
float color[4]);
void immDrawPixelsTexScaled(IMMDrawPixelsTexState *state,
float x,
float y,
int img_w,
int img_h,
int format,
int type,
int zoomfilter,
void *rect,
float scaleX,
float scaleY,
float xzoom,
float yzoom,
float color[4]);
void immDrawPixelsTexScaled_clipping(IMMDrawPixelsTexState *state,
float x,
float y,
int img_w,
int img_h,
int format,
int type,
int zoomfilter,
void *rect,
float scaleX,
float scaleY,
float clip_min_x,
float clip_min_y,
float clip_max_x,
float clip_max_y,
float xzoom,
float yzoom,
float color[4]);
/* Image buffer drawing functions, with display transform
*
* The view and display settings can either be specified manually,
* or retrieved from the context with the '_ctx' variations.
*
* For better performance clipping coordinates can be specified so parts of the
* image outside the view are skipped. */
void ED_draw_imbuf(struct ImBuf *ibuf,
float x,
float y,
int zoomfilter,
struct ColorManagedViewSettings *view_settings,
struct ColorManagedDisplaySettings *display_settings,
float zoom_x,
float zoom_y);
void ED_draw_imbuf_clipping(struct ImBuf *ibuf,
float x,
float y,
int zoomfilter,
struct ColorManagedViewSettings *view_settings,
struct ColorManagedDisplaySettings *display_settings,
float clip_min_x,
float clip_min_y,
float clip_max_x,
float clip_max_y,
float zoom_x,
float zoom_y);
void ED_draw_imbuf_ctx(const struct bContext *C,
struct ImBuf *ibuf,
float x,
float y,
int zoomfilter,
float zoom_x,
float zoom_y);
void ED_draw_imbuf_ctx_clipping(const struct bContext *C,
struct ImBuf *ibuf,
float x,
float y,
int zoomfilter,
float clip_min_x,
float clip_min_y,
float clip_max_x,
float clip_max_y,
float zoom_x,
float zoom_y);
int ED_draw_imbuf_method(struct ImBuf *ibuf);
/* OpenGL drawing utility functions. Do not use these in new code, these
* are intended to be moved or removed in the future. */
/* own working polygon offset */
float bglPolygonOffsetCalc(const float winmat[16], float viewdist, float dist);
void bglPolygonOffset(float viewdist, float dist);
void immDrawBorderCorners(unsigned int pos, const struct rcti *border, float zoomx, float zoomy);
#ifdef __cplusplus
}
#endif
#endif /* __BIF_GLUTIL_H__ */
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