diff options
Diffstat (limited to 'source/blender/editors/include/BIF_glutil.h')
| -rw-r--r-- | source/blender/editors/include/BIF_glutil.h | 23 |
1 files changed, 10 insertions, 13 deletions
diff --git a/source/blender/editors/include/BIF_glutil.h b/source/blender/editors/include/BIF_glutil.h index 44195988c40..2172aa82acf 100644 --- a/source/blender/editors/include/BIF_glutil.h +++ b/source/blender/editors/include/BIF_glutil.h @@ -49,7 +49,8 @@ void fdrawXORcirc(float xofs, float yofs, float rad); void fdrawcheckerboard(float x1, float y1, float x2, float y2); -/* glStipple defines */ +/* OpenGL stipple defines */ +/* OpenGL stipple defines */ extern unsigned char stipple_halftone[128]; extern unsigned char stipple_quarttone[128]; extern unsigned char stipple_diag_stripes_pos[128]; @@ -147,13 +148,14 @@ void glaDrawPixelsTexScaled(float x, float y, int img_w, int img_h, int format, /* 2D Drawing Assistance */ /** Define a 2D area (viewport, scissor, matrices) for OpenGL rendering. - * This routine sets up an OpenGL state appropriate for drawing using - * both vertice (glVertex, etc) and raster (glRasterPos, glRect) commands. - * All coordinates should be at integer positions. There is little to - * no reason to use glVertex2f etc. functions during 2D rendering, and + * + * glwDefine2DArea and glaBegin2DDraw set up an OpenGL state appropriate + * for drawing using both vertice (Vertex, etc) and raster (RasterPos, Rect) + * commands. All coordinates should be at integer positions. There is little + * to no reason to use glVertex2f etc. functions during 2D rendering, and * thus no reason to +-0.5 the coordinates or perform other silly * tricks. - * + * * \param screen_rect The screen rectangle to be defined for 2D drawing. */ void glaDefine2DArea (struct rcti *screen_rect); @@ -165,13 +167,8 @@ typedef struct gla2DDrawInfo gla2DDrawInfo; * to free it and to return OpenGL to its previous state. The * scissor rectangle is set to match the viewport. * - * This routine sets up an OpenGL state appropriate for drawing using - * both vertice (glVertex, etc) and raster (glRasterPos, glRect) commands. - * All coordinates should be at integer positions. There is little to - * no reason to use glVertex2f etc. functions during 2D rendering, and - * thus no reason to +-0.5 the coordinates or perform other silly - * tricks. - * + * See glaDefine2DArea for an explanation of why this function uses integers. + * * \param screen_rect The screen rectangle to be used for 2D drawing. * \param world_rect The world rectangle that the 2D area represented * by \a screen_rect is supposed to represent. If NULL it is assumed the |