X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fmain%2Fpolygon.c;h=564250b881cf10c3cdae0481fdeea63d265fbe9d;hb=f0df08abbec173be183d3d6ecf3d4ba5206df179;hp=b48d70eaf93f33ccc7269cd1d7b56d7ac628ce38;hpb=5e3bc0c2a2bcdf59949410f94c9b705fc1281ce8;p=mesa.git diff --git a/src/mesa/main/polygon.c b/src/mesa/main/polygon.c index b48d70eaf93..564250b881c 100644 --- a/src/mesa/main/polygon.c +++ b/src/mesa/main/polygon.c @@ -1,10 +1,13 @@ -/* $Id: polygon.c,v 1.16 2000/11/22 07:32:17 joukj Exp $ */ +/** + * \file polygon.c + * Polygon operations. + */ /* * Mesa 3-D graphics library - * Version: 3.5 + * Version: 6.5.1 * - * Copyright (C) 1999-2000 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"), @@ -25,167 +28,330 @@ */ -#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); - ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCullFace"); + ASSERT_OUTSIDE_BEGIN_END(ctx); if (MESA_VERBOSE&VERBOSE_API) - fprintf(stderr, "glCullFace %s\n", gl_lookup_enum_by_nr(mode)); + _mesa_debug(ctx, "glCullFace %s\n", _mesa_lookup_enum_by_nr(mode)); if (mode!=GL_FRONT && mode!=GL_BACK && mode!=GL_FRONT_AND_BACK) { - gl_error( ctx, GL_INVALID_ENUM, "glCullFace" ); + _mesa_error( ctx, GL_INVALID_ENUM, "glCullFace" ); return; } + if (ctx->Polygon.CullFaceMode == mode) + return; + + FLUSH_VERTICES(ctx, _NEW_POLYGON); ctx->Polygon.CullFaceMode = mode; - ctx->NewState |= _NEW_POLYGON; if (ctx->Driver.CullFace) ctx->Driver.CullFace( ctx, 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); - ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glFrontFace"); + ASSERT_OUTSIDE_BEGIN_END(ctx); if (MESA_VERBOSE&VERBOSE_API) - fprintf(stderr, "glFrontFace %s\n", gl_lookup_enum_by_nr(mode)); + _mesa_debug(ctx, "glFrontFace %s\n", _mesa_lookup_enum_by_nr(mode)); if (mode!=GL_CW && mode!=GL_CCW) { - gl_error( ctx, GL_INVALID_ENUM, "glFrontFace" ); + _mesa_error( ctx, GL_INVALID_ENUM, "glFrontFace" ); return; } + if (ctx->Polygon.FrontFace == mode) + return; + + FLUSH_VERTICES(ctx, _NEW_POLYGON); ctx->Polygon.FrontFace = mode; - ctx->Polygon.FrontBit = (GLboolean) (mode == GL_CW); - ctx->NewState |= _NEW_POLYGON; + + ctx->Polygon._FrontBit = (GLboolean) (mode == GL_CW); if (ctx->Driver.FrontFace) ctx->Driver.FrontFace( ctx, 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); - ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPolygonMode"); + ASSERT_OUTSIDE_BEGIN_END(ctx); if (MESA_VERBOSE&VERBOSE_API) - fprintf(stderr, "glPolygonMode %s %s\n", - gl_lookup_enum_by_nr(face), - gl_lookup_enum_by_nr(mode)); + _mesa_debug(ctx, "glPolygonMode %s %s\n", + _mesa_lookup_enum_by_nr(face), + _mesa_lookup_enum_by_nr(mode)); - if (face!=GL_FRONT && face!=GL_BACK && face!=GL_FRONT_AND_BACK) { - gl_error( ctx, GL_INVALID_ENUM, "glPolygonMode(face)" ); - return; - } - else if (mode!=GL_POINT && mode!=GL_LINE && mode!=GL_FILL) { - gl_error( ctx, GL_INVALID_ENUM, "glPolygonMode(mode)" ); + if (mode!=GL_POINT && mode!=GL_LINE && mode!=GL_FILL) { + _mesa_error( ctx, GL_INVALID_ENUM, "glPolygonMode(mode)" ); return; } - if (face==GL_FRONT || face==GL_FRONT_AND_BACK) { + switch (face) { + case GL_FRONT: + if (ctx->Polygon.FrontMode == mode) + return; + FLUSH_VERTICES(ctx, _NEW_POLYGON); + ctx->Polygon.FrontMode = mode; + break; + case GL_FRONT_AND_BACK: + if (ctx->Polygon.FrontMode == mode && + ctx->Polygon.BackMode == mode) + return; + FLUSH_VERTICES(ctx, _NEW_POLYGON); ctx->Polygon.FrontMode = mode; - } - if (face==GL_BACK || face==GL_FRONT_AND_BACK) { ctx->Polygon.BackMode = mode; + break; + case GL_BACK: + if (ctx->Polygon.BackMode == mode) + return; + FLUSH_VERTICES(ctx, _NEW_POLYGON); + ctx->Polygon.BackMode = mode; + break; + default: + _mesa_error( ctx, GL_INVALID_ENUM, "glPolygonMode(face)" ); + return; } - /* Compute a handy "shortcut" value: */ - ctx->_TriangleCaps &= ~DD_TRI_UNFILLED; - ctx->Polygon._Unfilled = GL_FALSE; - - if (ctx->Polygon.FrontMode!=GL_FILL || ctx->Polygon.BackMode!=GL_FILL) { - ctx->Polygon._Unfilled = GL_TRUE; + if (ctx->Polygon.FrontMode == GL_FILL && ctx->Polygon.BackMode == GL_FILL) + ctx->_TriangleCaps &= ~DD_TRI_UNFILLED; + else ctx->_TriangleCaps |= DD_TRI_UNFILLED; - } - ctx->NewState |= _NEW_POLYGON; - - 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); - ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPolygonStipple"); + ASSERT_OUTSIDE_BEGIN_END(ctx); if (MESA_VERBOSE&VERBOSE_API) - fprintf(stderr, "glPolygonStipple\n"); + _mesa_debug(ctx, "glPolygonStipple\n"); - _mesa_unpack_polygon_stipple(pattern, ctx->PolygonStipple, &ctx->Unpack); + FLUSH_VERTICES(ctx, _NEW_POLYGONSTIPPLE); - ctx->NewState |= _NEW_POLYGONSTIPPLE; + _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); - ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPolygonOffset"); + ASSERT_OUTSIDE_BEGIN_END(ctx); if (MESA_VERBOSE&VERBOSE_API) - fprintf(stderr, "glGetPolygonStipple\n"); - - _mesa_pack_polygon_stipple(ctx->PolygonStipple, dest, &ctx->Pack); + _mesa_debug(ctx, "glGetPolygonStipple\n"); + + /* 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); - ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPolygonOffset"); + ASSERT_OUTSIDE_BEGIN_END(ctx); if (MESA_VERBOSE&VERBOSE_API) - fprintf(stderr, "glPolygonOffset %f %f\n", factor, units); + _mesa_debug(ctx, "glPolygonOffset %f %f\n", factor, units); + if (ctx->Polygon.OffsetFactor == factor && + ctx->Polygon.OffsetUnits == units) + return; + + FLUSH_VERTICES(ctx, _NEW_POLYGON); ctx->Polygon.OffsetFactor = factor; ctx->Polygon.OffsetUnits = units; - ctx->Polygon.OffsetMRD = units * ctx->Visual.MRD; - ctx->NewState |= _NEW_POLYGON; -} + if (ctx->Driver.PolygonOffset) + ctx->Driver.PolygonOffset( ctx, factor, units ); +} -void +void GLAPIENTRY _mesa_PolygonOffsetEXT( GLfloat factor, GLfloat bias ) { GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPolygonOffsetEXT"); - _mesa_PolygonOffset(factor, bias * ctx->Visual.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) ); } + +/*@}*/