X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fmain%2Fpolygon.c;h=564250b881cf10c3cdae0481fdeea63d265fbe9d;hb=f0df08abbec173be183d3d6ecf3d4ba5206df179;hp=95371579faddbf74f0409bf9f872c76d0e313aa9;hpb=4753d60dd070bb08d0116076bcc08025c86ce857;p=mesa.git diff --git a/src/mesa/main/polygon.c b/src/mesa/main/polygon.c index 95371579fad..564250b881c 100644 --- a/src/mesa/main/polygon.c +++ b/src/mesa/main/polygon.c @@ -1,10 +1,13 @@ -/* $Id: polygon.c,v 1.23 2002/06/15 02:38:16 brianp Exp $ */ +/** + * \file polygon.c + * Polygon operations. + */ /* * Mesa 3-D graphics library - * Version: 3.5 + * Version: 6.5.1 * - * Copyright (C) 1999-2001 Brian Paul All Rights Reserved. + * Copyright (C) 1999-2006 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"), @@ -25,22 +28,29 @@ */ -#ifdef PC_HEADER -#include "all.h" -#else #include "glheader.h" +#include "imports.h" +#include "bufferobj.h" #include "context.h" #include "image.h" #include "enums.h" #include "macros.h" -#include "mem.h" #include "polygon.h" #include "mtypes.h" -#endif - -void +/** + * Specify whether to cull front- or back-facing facets. + * + * \param mode culling mode. + * + * \sa glCullFace(). + * + * Verifies the parameter and updates gl_polygon_attrib::CullFaceMode. On + * change, flushes the vertices and notifies the driver via + * the dd_function_table::CullFace callback. + */ +void GLAPIENTRY _mesa_CullFace( GLenum mode ) { GET_CURRENT_CONTEXT(ctx); @@ -65,8 +75,18 @@ _mesa_CullFace( GLenum mode ) } - -void +/** + * Define front- and back-facing + * + * \param mode orientation of front-facing polygons. + * + * \sa glFrontFace(). + * + * Verifies the parameter and updates gl_polygon_attrib::FrontFace. On change + * flushes the vertices and notifies the driver via + * the dd_function_table::FrontFace callback. + */ +void GLAPIENTRY _mesa_FrontFace( GLenum mode ) { GET_CURRENT_CONTEXT(ctx); @@ -93,8 +113,19 @@ _mesa_FrontFace( GLenum mode ) } - -void +/** + * Set the polygon rasterization mode. + * + * \param face the polygons which \p mode applies to. + * \param mode how polygons should be rasterized. + * + * \sa glPolygonMode(). + * + * Verifies the parameters and updates gl_polygon_attrib::FrontMode and + * gl_polygon_attrib::BackMode. On change flushes the vertices and notifies the + * driver via the dd_function_table::PolygonMode callback. + */ +void GLAPIENTRY _mesa_PolygonMode( GLenum face, GLenum mode ) { GET_CURRENT_CONTEXT(ctx); @@ -136,18 +167,65 @@ _mesa_PolygonMode( GLenum face, GLenum mode ) return; } - ctx->_TriangleCaps &= ~DD_TRI_UNFILLED; - if (ctx->Polygon.FrontMode!=GL_FILL || ctx->Polygon.BackMode!=GL_FILL) + if (ctx->Polygon.FrontMode == GL_FILL && ctx->Polygon.BackMode == GL_FILL) + ctx->_TriangleCaps &= ~DD_TRI_UNFILLED; + else ctx->_TriangleCaps |= DD_TRI_UNFILLED; - if (ctx->Driver.PolygonMode) { - (*ctx->Driver.PolygonMode)( ctx, face, mode ); - } + if (ctx->Driver.PolygonMode) + ctx->Driver.PolygonMode(ctx, face, mode); } +#if _HAVE_FULL_GL +/** + * This routine updates the ctx->Polygon.Stipple state. + * If we're getting the stipple data from a PBO, we map the buffer + * in order to access the data. + * In any case, we obey the current pixel unpacking parameters when fetching + * the stipple data. + * + * In the future, this routine should be used as a fallback, called via + * ctx->Driver.PolygonStipple(). We'll have to update all the DRI drivers + * too. + */ void +_mesa_polygon_stipple(GLcontext *ctx, const GLubyte *pattern) +{ + if (ctx->Unpack.BufferObj->Name) { + /* Get/unpack the stipple pattern from a PBO */ + GLubyte *buf; + if (!_mesa_validate_pbo_access(2, &ctx->Unpack, 32, 32, 1, + GL_COLOR_INDEX, GL_BITMAP, pattern)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glPolygonStipple(bad PBO access)"); + return; + } + buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, + GL_READ_ONLY_ARB, + ctx->Unpack.BufferObj); + if (!buf) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glPolygonStipple(PBO mapped)"); + return; + } + buf = ADD_POINTERS(buf, pattern); + _mesa_unpack_polygon_stipple(buf, ctx->PolygonStipple, &ctx->Unpack); + ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, + ctx->Unpack.BufferObj); + } + else { + /* Get/unpack the stipple pattern from user memory */ + _mesa_unpack_polygon_stipple(pattern, ctx->PolygonStipple, &ctx->Unpack); + } +} + + +/** + * Called by glPolygonStipple. + */ +void GLAPIENTRY _mesa_PolygonStipple( const GLubyte *pattern ) { GET_CURRENT_CONTEXT(ctx); @@ -157,15 +235,18 @@ _mesa_PolygonStipple( const GLubyte *pattern ) _mesa_debug(ctx, "glPolygonStipple\n"); FLUSH_VERTICES(ctx, _NEW_POLYGONSTIPPLE); - _mesa_unpack_polygon_stipple(pattern, ctx->PolygonStipple, &ctx->Unpack); + + _mesa_polygon_stipple(ctx, pattern); if (ctx->Driver.PolygonStipple) - ctx->Driver.PolygonStipple( ctx, (const GLubyte *) ctx->PolygonStipple ); + ctx->Driver.PolygonStipple(ctx, pattern); } - -void +/** + * Called by glPolygonStipple. + */ +void GLAPIENTRY _mesa_GetPolygonStipple( GLubyte *dest ) { GET_CURRENT_CONTEXT(ctx); @@ -174,12 +255,39 @@ _mesa_GetPolygonStipple( GLubyte *dest ) if (MESA_VERBOSE&VERBOSE_API) _mesa_debug(ctx, "glGetPolygonStipple\n"); - _mesa_pack_polygon_stipple(ctx->PolygonStipple, dest, &ctx->Pack); + /* XXX someday we may put this code into a separate function and call + * it with ctx->Driver.GetPolygonStipple(). + */ + if (ctx->Pack.BufferObj->Name) { + /* Put/pack the stipple pattern into a PBO */ + GLubyte *buf; + if (!_mesa_validate_pbo_access(2, &ctx->Pack, 32, 32, 1, + GL_COLOR_INDEX, GL_BITMAP, dest)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glGetPolygonStipple(bad PBO access)"); + return; + } + buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, + GL_WRITE_ONLY_ARB, + ctx->Pack.BufferObj); + if (!buf) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glGetPolygonStipple(PBO mapped)"); + return; + } + buf = ADD_POINTERS(buf, dest); + _mesa_pack_polygon_stipple(ctx->PolygonStipple, buf, &ctx->Pack); + ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, + ctx->Pack.BufferObj); + } + else { + /* Put/pack the stipple pattern into user memory */ + _mesa_pack_polygon_stipple(ctx->PolygonStipple, dest, &ctx->Pack); + } } - -void +void GLAPIENTRY _mesa_PolygonOffset( GLfloat factor, GLfloat units ) { GET_CURRENT_CONTEXT(ctx); @@ -195,17 +303,55 @@ _mesa_PolygonOffset( GLfloat factor, GLfloat units ) FLUSH_VERTICES(ctx, _NEW_POLYGON); ctx->Polygon.OffsetFactor = factor; ctx->Polygon.OffsetUnits = units; - ctx->Polygon.OffsetMRD = units * ctx->MRD; if (ctx->Driver.PolygonOffset) ctx->Driver.PolygonOffset( ctx, factor, units ); } - -void +void GLAPIENTRY _mesa_PolygonOffsetEXT( GLfloat factor, GLfloat bias ) { GET_CURRENT_CONTEXT(ctx); - _mesa_PolygonOffset(factor, bias * ctx->DepthMaxF ); + /* XXX mult by DepthMaxF here??? */ + _mesa_PolygonOffset(factor, bias * ctx->DrawBuffer->_DepthMaxF ); +} + +#endif + + +/**********************************************************************/ +/** \name Initialization */ +/*@{*/ + +/** + * Initialize the context polygon state. + * + * \param ctx GL context. + * + * Initializes __GLcontextRec::Polygon and __GLcontextRec::PolygonStipple + * attribute groups. + */ +void _mesa_init_polygon( GLcontext * ctx ) +{ + /* Polygon group */ + ctx->Polygon.CullFlag = GL_FALSE; + ctx->Polygon.CullFaceMode = GL_BACK; + ctx->Polygon.FrontFace = GL_CCW; + ctx->Polygon._FrontBit = 0; + ctx->Polygon.FrontMode = GL_FILL; + ctx->Polygon.BackMode = GL_FILL; + ctx->Polygon.SmoothFlag = GL_FALSE; + ctx->Polygon.StippleFlag = GL_FALSE; + ctx->Polygon.OffsetFactor = 0.0F; + ctx->Polygon.OffsetUnits = 0.0F; + ctx->Polygon.OffsetPoint = GL_FALSE; + ctx->Polygon.OffsetLine = GL_FALSE; + ctx->Polygon.OffsetFill = GL_FALSE; + + + /* Polygon Stipple group */ + MEMSET( ctx->PolygonStipple, 0xff, 32*sizeof(GLuint) ); } + +/*@}*/