diff options
Diffstat (limited to 'src/mesa/swrast/swrast.h')
| -rw-r--r-- | src/mesa/swrast/swrast.h | 139 |
1 files changed, 91 insertions, 48 deletions
diff --git a/src/mesa/swrast/swrast.h b/src/mesa/swrast/swrast.h index 4e8627e695..c567d79978 100644 --- a/src/mesa/swrast/swrast.h +++ b/src/mesa/swrast/swrast.h @@ -1,13 +1,83 @@ +/* + * Mesa 3-D graphics library + * Version: 3.5 + * + * Copyright (C) 1999 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. + * + * Authors: + * Keith Whitwell <keithw@valinux.com> + */ + #ifndef SWRAST_H #define SWRAST_H #include "types.h" -/* These are the functions exported from swrast. (more to come) +/* The software rasterizer now uses this format for vertices. Thus a + * 'RasterSetup' stage or other translation is required between the + * tnl module and the swrast rasterization functions. This serves to + * isolate the swrast module from the internals of the tnl module, and + * improve its usefulness as a fallback mechanism for hardware + * drivers. + * + * Full software drivers: + * - Register the rastersetup and triangle functions from + * utils/software_helper. + * - On statechange, update the rasterization pointers in that module. + * + * Rasterization hardware drivers: + * - Keep native rastersetup. + * - Implement native twoside,offset and unfilled triangle setup. + * - Implement a translator from native vertices to swrast vertices. + * - On partial fallback (mix of accelerated and unaccelerated + * prims), call a pass-through function which translates native + * vertices to SWvertices and calls the appropriate swrast function. + * - On total fallback (vertex format insufficient for state or all + * primitives unaccelerated), hook in swrast_setup instead. + */ +typedef struct { + GLfloat win[4]; + GLfloat eye[4]; /* for GL_EXT_point_param only */ + GLfloat texcoord[MAX_TEXTURE_UNITS][4]; + GLchan color[4]; + GLchan specular[4]; + GLfloat fog; + GLuint index; +} SWvertex; + + + + +/* These are the public-access functions exported from swrast. */ void _swrast_alloc_buffers( GLcontext *ctx ); +GLboolean +_swrast_CreateContext( GLcontext *ctx ); + +void +_swrast_DestroyContext( GLcontext *ctx ); + + + void _swrast_Bitmap( GLcontext *ctx, @@ -47,62 +117,35 @@ _swrast_Accum( GLcontext *ctx, GLenum op, GLfloat value, GLint xpos, GLint ypos, GLint width, GLint height ); -void -_swrast_set_line_function( GLcontext *ctx ); - -void -_swrast_set_point_function( GLcontext *ctx ); - -void -_swrast_set_triangle_function( GLcontext *ctx ); - -void -_swrast_set_quad_function( GLcontext *ctx ); - -void -_swrast_flush( GLcontext *ctx ); - -GLboolean -_swrast_create_context( GLcontext *ctx ); - -void -_swrast_destroy_context( GLcontext *ctx ); +/* Get a pointer to the stipple counter. + */ +GLuint * +_swrast_get_stipple_counter_ref( GLcontext *ctx ); -/* Replace: +/* These will always render the correct point/line/triangle for the + * current state. */ void -_swrast_set_texture_sampler( struct gl_texture_object *t ); - - +_swrast_Point( GLcontext *ctx, SWvertex *v ); -#define _SWRAST_NEW_TRIANGLE (_NEW_RENDERMODE| \ - _NEW_POLYGON| \ - _NEW_DEPTH| \ - _NEW_STENCIL| \ - _NEW_COLOR| \ - _NEW_TEXTURE| \ - _NEW_HINT| \ - _SWRAST_NEW_RASTERMASK| \ - _NEW_LIGHT| \ - _NEW_FOG) - -#define _SWRAST_NEW_LINE (_NEW_RENDERMODE| \ - _NEW_LINE| \ - _NEW_TEXTURE| \ - _NEW_LIGHT| \ - _NEW_FOG| \ - _NEW_DEPTH) - -#define _SWRAST_NEW_POINT (_NEW_RENDERMODE | \ - _NEW_POINT | \ - _NEW_TEXTURE | \ - _NEW_LIGHT | \ - _NEW_FOG) +void +_swrast_Line( GLcontext *ctx, SWvertex *v0, SWvertex *v1 ); +void +_swrast_Triangle( GLcontext *ctx, SWvertex *v0, SWvertex *v1, SWvertex *v2 ); +void +_swrast_Quad( GLcontext *ctx, SWvertex *v0, SWvertex *v1, SWvertex *v2, + SWvertex *v3); +void +_swrast_flush( GLcontext *ctx ); +/* Tell the software rasterizer about core state changes. + */ +void +_swrast_InvalidateState( GLcontext *ctx, GLuint new_state ); #endif |