From 2702c90d7a39fca2a3319c5e915fd290cb31fc70 Mon Sep 17 00:00:00 2001 From: Radosław Kujawa Date: Fri, 17 Jul 2026 14:54:32 +0200 Subject: Initial import. --- src/mesa/swrast/s_span.h | 75 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 src/mesa/swrast/s_span.h (limited to 'src/mesa/swrast/s_span.h') diff --git a/src/mesa/swrast/s_span.h b/src/mesa/swrast/s_span.h new file mode 100644 index 0000000..ee78a0e --- /dev/null +++ b/src/mesa/swrast/s_span.h @@ -0,0 +1,75 @@ + +/* + * Mesa 3-D graphics library + * Version: 5.1 + * + * Copyright (C) 1999-2003 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"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + + +#ifndef S_SPAN_H +#define S_SPAN_H + + +#include "mtypes.h" +#include "swrast.h" + + +extern void +_swrast_span_default_z( GLcontext *ctx, struct sw_span *span ); + +extern void +_swrast_span_interpolate_z( const GLcontext *ctx, struct sw_span *span ); + +extern void +_swrast_span_default_fog( GLcontext *ctx, struct sw_span *span ); + +extern void +_swrast_span_default_color( GLcontext *ctx, struct sw_span *span ); + +extern void +_swrast_span_default_texcoords( GLcontext *ctx, struct sw_span *span ); + +extern GLfloat +_swrast_compute_lambda(GLfloat dsdx, GLfloat dsdy, GLfloat dtdx, GLfloat dtdy, + GLfloat dqdx, GLfloat dqdy, GLfloat texW, GLfloat texH, + GLfloat s, GLfloat t, GLfloat q, GLfloat invQ); + +extern void +_swrast_write_index_span( GLcontext *ctx, struct sw_span *span); + + +extern void +_swrast_write_rgba_span( GLcontext *ctx, struct sw_span *span); + + +extern void +_swrast_write_texture_span( GLcontext *ctx, struct sw_span *span); + + +extern void +_swrast_read_rgba_span( GLcontext *ctx, GLframebuffer *buffer, + GLuint n, GLint x, GLint y, GLchan rgba[][4] ); + +extern void +_swrast_read_index_span( GLcontext *ctx, GLframebuffer *buffer, + GLuint n, GLint x, GLint y, GLuint indx[] ); + +#endif -- cgit