fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2025-12-24 21:50:12 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

added _mesa_adjust_image_for_convolution()

Browse source
This commit is contained in:
Brian Paul 2001-02-06 17:22:16 +00:00
parent d1baa05439
commit 16461f7c53
2 changed files with 40 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

35
src/mesa/main/convolve.c
View file

@ -1,10 +1,10 @@
/* $Id: convolve.c,v 1.18 2001/01/05 02:26:48 keithw Exp $ */
/* $Id: convolve.c,v 1.19 2001/02/06 17:22:16 brianp Exp $ */
/*
* Mesa 3-D graphics library
* Version: 3.5
*
* Copyright (C) 1999-2000 Brian Paul All Rights Reserved.
* Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
@ -1420,3 +1420,34 @@ _mesa_convolve_sep_image(const GLcontext *ctx,
;
}
}
/*
* This function computes an image's size after convolution.
* If the convolution border mode is GL_REDUCE, the post-convolution
* image will be smaller than the original.
*/
void
_mesa_adjust_image_for_convolution(const GLcontext *ctx, GLuint dimensions,
GLsizei *width, GLsizei *height)
{
if (ctx->Pixel.Convolution1DEnabled
&& dimensions == 1
&& ctx->Pixel.ConvolutionBorderMode[0] == GL_REDUCE) {
*width = *width - (MAX2(ctx->Convolution1D.Width, 1) - 1);
}
else if (ctx->Pixel.Convolution2DEnabled
&& dimensions > 1
&& ctx->Pixel.ConvolutionBorderMode[1] == GL_REDUCE) {
*width = *width - (MAX2(ctx->Convolution2D.Width, 1) - 1);
*height = *height - (MAX2(ctx->Convolution2D.Height, 1) - 1);
}
else if (ctx->Pixel.Separable2DEnabled
&& dimensions > 1
&& ctx->Pixel.ConvolutionBorderMode[2] == GL_REDUCE) {
*width = *width - (MAX2(ctx->Separable2D.Width, 1) - 1);
*height = *height - (MAX2(ctx->Separable2D.Height, 1) - 1);
}
}

9
src/mesa/main/convolve.h
View file

@ -1,10 +1,10 @@
/* $Id: convolve.h,v 1.3 2000/11/22 07:32:16 joukj Exp $ */
/* $Id: convolve.h,v 1.4 2001/02/06 17:22:16 brianp Exp $ */
/*
* Mesa 3-D graphics library
* Version: 3.5
*
* Copyright (C) 1999-2000 Brian Paul All Rights Reserved.
* Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
@ -100,4 +100,9 @@ _mesa_convolve_sep_image(const GLcontext *ctx,
const GLfloat *srcImage, GLfloat *dstImage);
extern void
_mesa_adjust_image_for_convolution(const GLcontext *ctx, GLuint dimensions,
GLsizei *width, GLsizei *height);
#endif