Files
test2/source/blender/editors/include/BIF_glutil.h
Brecht Van Lommel 7cbb8f20a4 GPU: automatically draw images with GLSL shader depending on resolution
This adds a new "Automatic" image display method which uses GLSL shaders for
most images. It only does CPU side color management for higher res images
where sending big float buffers to the GPU is likely to be a bottleneck or
cause memory usage problem.

Automatic is the default now, previously it was 2D Texture.
2019-04-20 13:32:36 +02:00

184 lines
7.1 KiB
C

/*
* 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__
struct rctf;
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 retrived
* 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. */
void set_inverted_drawing(int enable);
/* 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);
#endif /* __BIF_GLUTIL_H__ */