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539 lines
13 KiB
C
539 lines
13 KiB
C
/*
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* Mesa 3-D graphics library
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* Version: 6.5.3
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*
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* Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/**
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* \file rastpos.c
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* Raster position operations.
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*/
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#include <precomp.h>
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#if FEATURE_rastpos
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/**
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* Helper function for all the RasterPos functions.
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*/
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static void
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rasterpos(GLfloat x, GLfloat y, GLfloat z, GLfloat w)
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{
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GET_CURRENT_CONTEXT(ctx);
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GLfloat p[4];
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p[0] = x;
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p[1] = y;
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p[2] = z;
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p[3] = w;
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ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
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FLUSH_CURRENT(ctx, 0);
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if (ctx->NewState)
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_mesa_update_state( ctx );
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ctx->Driver.RasterPos(ctx, p);
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}
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static void GLAPIENTRY
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_mesa_RasterPos2d(GLdouble x, GLdouble y)
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{
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rasterpos((GLfloat)x, (GLfloat)y, (GLfloat)0.0, (GLfloat)1.0);
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}
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static void GLAPIENTRY
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_mesa_RasterPos2f(GLfloat x, GLfloat y)
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{
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rasterpos(x, y, 0.0F, 1.0F);
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}
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static void GLAPIENTRY
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_mesa_RasterPos2i(GLint x, GLint y)
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{
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rasterpos((GLfloat) x, (GLfloat) y, 0.0F, 1.0F);
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}
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static void GLAPIENTRY
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_mesa_RasterPos2s(GLshort x, GLshort y)
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{
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rasterpos(x, y, 0.0F, 1.0F);
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}
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static void GLAPIENTRY
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_mesa_RasterPos3d(GLdouble x, GLdouble y, GLdouble z)
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{
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rasterpos((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F);
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}
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static void GLAPIENTRY
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_mesa_RasterPos3f(GLfloat x, GLfloat y, GLfloat z)
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{
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rasterpos(x, y, z, 1.0F);
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}
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static void GLAPIENTRY
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_mesa_RasterPos3i(GLint x, GLint y, GLint z)
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{
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rasterpos((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F);
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}
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static void GLAPIENTRY
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_mesa_RasterPos3s(GLshort x, GLshort y, GLshort z)
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{
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rasterpos(x, y, z, 1.0F);
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}
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static void GLAPIENTRY
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_mesa_RasterPos4d(GLdouble x, GLdouble y, GLdouble z, GLdouble w)
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{
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rasterpos((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w);
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}
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static void GLAPIENTRY
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_mesa_RasterPos4f(GLfloat x, GLfloat y, GLfloat z, GLfloat w)
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{
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rasterpos(x, y, z, w);
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}
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static void GLAPIENTRY
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_mesa_RasterPos4i(GLint x, GLint y, GLint z, GLint w)
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{
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rasterpos((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w);
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}
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static void GLAPIENTRY
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_mesa_RasterPos4s(GLshort x, GLshort y, GLshort z, GLshort w)
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{
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rasterpos(x, y, z, w);
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}
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static void GLAPIENTRY
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_mesa_RasterPos2dv(const GLdouble *v)
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{
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rasterpos((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F);
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}
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static void GLAPIENTRY
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_mesa_RasterPos2fv(const GLfloat *v)
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{
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rasterpos(v[0], v[1], 0.0F, 1.0F);
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}
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static void GLAPIENTRY
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_mesa_RasterPos2iv(const GLint *v)
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{
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rasterpos((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F);
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}
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static void GLAPIENTRY
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_mesa_RasterPos2sv(const GLshort *v)
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{
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rasterpos(v[0], v[1], 0.0F, 1.0F);
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}
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static void GLAPIENTRY
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_mesa_RasterPos3dv(const GLdouble *v)
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{
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rasterpos((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F);
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}
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static void GLAPIENTRY
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_mesa_RasterPos3fv(const GLfloat *v)
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{
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rasterpos(v[0], v[1], v[2], 1.0F);
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}
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static void GLAPIENTRY
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_mesa_RasterPos3iv(const GLint *v)
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{
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rasterpos((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F);
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}
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static void GLAPIENTRY
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_mesa_RasterPos3sv(const GLshort *v)
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{
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rasterpos(v[0], v[1], v[2], 1.0F);
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}
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static void GLAPIENTRY
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_mesa_RasterPos4dv(const GLdouble *v)
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{
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rasterpos((GLfloat) v[0], (GLfloat) v[1],
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(GLfloat) v[2], (GLfloat) v[3]);
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}
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static void GLAPIENTRY
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_mesa_RasterPos4fv(const GLfloat *v)
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{
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rasterpos(v[0], v[1], v[2], v[3]);
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}
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static void GLAPIENTRY
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_mesa_RasterPos4iv(const GLint *v)
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{
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rasterpos((GLfloat) v[0], (GLfloat) v[1],
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(GLfloat) v[2], (GLfloat) v[3]);
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}
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static void GLAPIENTRY
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_mesa_RasterPos4sv(const GLshort *v)
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{
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rasterpos(v[0], v[1], v[2], v[3]);
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}
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/**********************************************************************/
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/*** GL_ARB_window_pos / GL_MESA_window_pos ***/
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/**********************************************************************/
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/**
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* All glWindowPosMESA and glWindowPosARB commands call this function to
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* update the current raster position.
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*/
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static void
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window_pos3f(GLfloat x, GLfloat y, GLfloat z)
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{
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GET_CURRENT_CONTEXT(ctx);
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GLfloat z2;
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ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
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FLUSH_CURRENT(ctx, 0);
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z2 = CLAMP(z, 0.0F, 1.0F) * (ctx->Viewport.Far - ctx->Viewport.Near)
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+ ctx->Viewport.Near;
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/* set raster position */
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ctx->Current.RasterPos[0] = x;
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ctx->Current.RasterPos[1] = y;
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ctx->Current.RasterPos[2] = z2;
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ctx->Current.RasterPos[3] = 1.0F;
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ctx->Current.RasterPosValid = GL_TRUE;
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if (ctx->Fog.FogCoordinateSource == GL_FOG_COORDINATE_EXT)
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ctx->Current.RasterDistance = ctx->Current.Attrib[VERT_ATTRIB_FOG][0];
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else
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ctx->Current.RasterDistance = 0.0;
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/* raster color = current color or index */
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ctx->Current.RasterColor[0]
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= CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR][0], 0.0F, 1.0F);
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ctx->Current.RasterColor[1]
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= CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR][1], 0.0F, 1.0F);
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ctx->Current.RasterColor[2]
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= CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR][2], 0.0F, 1.0F);
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ctx->Current.RasterColor[3]
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= CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR][3], 0.0F, 1.0F);
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/* raster texcoord = current texcoord */
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COPY_4FV( ctx->Current.RasterTexCoords, ctx->Current.Attrib[VERT_ATTRIB_TEX] );
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if (ctx->RenderMode==GL_SELECT) {
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_mesa_update_hitflag( ctx, ctx->Current.RasterPos[2] );
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}
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}
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/* This is just to support the GL_MESA_window_pos version */
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static void
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window_pos4f(GLfloat x, GLfloat y, GLfloat z, GLfloat w)
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{
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GET_CURRENT_CONTEXT(ctx);
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window_pos3f(x, y, z);
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ctx->Current.RasterPos[3] = w;
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}
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static void GLAPIENTRY
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_mesa_WindowPos2dMESA(GLdouble x, GLdouble y)
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{
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window_pos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F);
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}
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static void GLAPIENTRY
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_mesa_WindowPos2fMESA(GLfloat x, GLfloat y)
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{
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window_pos4f(x, y, 0.0F, 1.0F);
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}
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static void GLAPIENTRY
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_mesa_WindowPos2iMESA(GLint x, GLint y)
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{
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window_pos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F);
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}
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static void GLAPIENTRY
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_mesa_WindowPos2sMESA(GLshort x, GLshort y)
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{
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window_pos4f(x, y, 0.0F, 1.0F);
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}
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static void GLAPIENTRY
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_mesa_WindowPos3dMESA(GLdouble x, GLdouble y, GLdouble z)
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{
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window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F);
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}
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static void GLAPIENTRY
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_mesa_WindowPos3fMESA(GLfloat x, GLfloat y, GLfloat z)
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{
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window_pos4f(x, y, z, 1.0F);
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}
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static void GLAPIENTRY
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_mesa_WindowPos3iMESA(GLint x, GLint y, GLint z)
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{
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window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F);
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}
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static void GLAPIENTRY
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_mesa_WindowPos3sMESA(GLshort x, GLshort y, GLshort z)
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{
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window_pos4f(x, y, z, 1.0F);
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}
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static void GLAPIENTRY
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_mesa_WindowPos4dMESA(GLdouble x, GLdouble y, GLdouble z, GLdouble w)
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{
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window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w);
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}
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static void GLAPIENTRY
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_mesa_WindowPos4fMESA(GLfloat x, GLfloat y, GLfloat z, GLfloat w)
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{
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window_pos4f(x, y, z, w);
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}
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static void GLAPIENTRY
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_mesa_WindowPos4iMESA(GLint x, GLint y, GLint z, GLint w)
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{
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window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w);
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}
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static void GLAPIENTRY
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_mesa_WindowPos4sMESA(GLshort x, GLshort y, GLshort z, GLshort w)
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{
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window_pos4f(x, y, z, w);
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}
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static void GLAPIENTRY
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_mesa_WindowPos2dvMESA(const GLdouble *v)
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{
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window_pos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F);
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}
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static void GLAPIENTRY
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_mesa_WindowPos2fvMESA(const GLfloat *v)
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{
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window_pos4f(v[0], v[1], 0.0F, 1.0F);
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}
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static void GLAPIENTRY
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_mesa_WindowPos2ivMESA(const GLint *v)
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{
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window_pos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F);
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}
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static void GLAPIENTRY
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_mesa_WindowPos2svMESA(const GLshort *v)
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{
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window_pos4f(v[0], v[1], 0.0F, 1.0F);
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}
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static void GLAPIENTRY
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_mesa_WindowPos3dvMESA(const GLdouble *v)
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{
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window_pos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F);
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}
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static void GLAPIENTRY
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_mesa_WindowPos3fvMESA(const GLfloat *v)
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{
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window_pos4f(v[0], v[1], v[2], 1.0);
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}
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static void GLAPIENTRY
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_mesa_WindowPos3ivMESA(const GLint *v)
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{
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window_pos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F);
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}
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static void GLAPIENTRY
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_mesa_WindowPos3svMESA(const GLshort *v)
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{
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window_pos4f(v[0], v[1], v[2], 1.0F);
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}
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static void GLAPIENTRY
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_mesa_WindowPos4dvMESA(const GLdouble *v)
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{
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window_pos4f((GLfloat) v[0], (GLfloat) v[1],
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(GLfloat) v[2], (GLfloat) v[3]);
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}
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static void GLAPIENTRY
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_mesa_WindowPos4fvMESA(const GLfloat *v)
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{
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window_pos4f(v[0], v[1], v[2], v[3]);
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}
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static void GLAPIENTRY
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_mesa_WindowPos4ivMESA(const GLint *v)
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{
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window_pos4f((GLfloat) v[0], (GLfloat) v[1],
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(GLfloat) v[2], (GLfloat) v[3]);
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}
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static void GLAPIENTRY
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_mesa_WindowPos4svMESA(const GLshort *v)
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{
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window_pos4f(v[0], v[1], v[2], v[3]);
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}
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#if 0
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/*
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* OpenGL implementation of glWindowPos*MESA()
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*/
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void glWindowPos4fMESA( GLfloat x, GLfloat y, GLfloat z, GLfloat w )
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{
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GLfloat fx, fy;
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/* Push current matrix mode and viewport attributes */
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glPushAttrib( GL_TRANSFORM_BIT | GL_VIEWPORT_BIT );
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/* Setup projection parameters */
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glMatrixMode( GL_PROJECTION );
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glPushMatrix();
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glLoadIdentity();
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glMatrixMode( GL_MODELVIEW );
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glPushMatrix();
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glLoadIdentity();
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glDepthRange( z, z );
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glViewport( (int) x - 1, (int) y - 1, 2, 2 );
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/* set the raster (window) position */
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fx = x - (int) x;
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fy = y - (int) y;
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glRasterPos4f( fx, fy, 0.0, w );
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/* restore matrices, viewport and matrix mode */
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glPopMatrix();
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glMatrixMode( GL_PROJECTION );
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glPopMatrix();
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glPopAttrib();
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}
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#endif
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void
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_mesa_init_rastpos_dispatch(struct _glapi_table *disp)
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{
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SET_RasterPos2f(disp, _mesa_RasterPos2f);
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SET_RasterPos2fv(disp, _mesa_RasterPos2fv);
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SET_RasterPos2i(disp, _mesa_RasterPos2i);
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SET_RasterPos2iv(disp, _mesa_RasterPos2iv);
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SET_RasterPos2d(disp, _mesa_RasterPos2d);
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SET_RasterPos2dv(disp, _mesa_RasterPos2dv);
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SET_RasterPos2s(disp, _mesa_RasterPos2s);
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SET_RasterPos2sv(disp, _mesa_RasterPos2sv);
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SET_RasterPos3d(disp, _mesa_RasterPos3d);
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SET_RasterPos3dv(disp, _mesa_RasterPos3dv);
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SET_RasterPos3f(disp, _mesa_RasterPos3f);
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SET_RasterPos3fv(disp, _mesa_RasterPos3fv);
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SET_RasterPos3i(disp, _mesa_RasterPos3i);
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SET_RasterPos3iv(disp, _mesa_RasterPos3iv);
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SET_RasterPos3s(disp, _mesa_RasterPos3s);
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SET_RasterPos3sv(disp, _mesa_RasterPos3sv);
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SET_RasterPos4d(disp, _mesa_RasterPos4d);
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SET_RasterPos4dv(disp, _mesa_RasterPos4dv);
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SET_RasterPos4f(disp, _mesa_RasterPos4f);
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SET_RasterPos4fv(disp, _mesa_RasterPos4fv);
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SET_RasterPos4i(disp, _mesa_RasterPos4i);
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SET_RasterPos4iv(disp, _mesa_RasterPos4iv);
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SET_RasterPos4s(disp, _mesa_RasterPos4s);
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SET_RasterPos4sv(disp, _mesa_RasterPos4sv);
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/* 197. GL_MESA_window_pos */
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SET_WindowPos2dMESA(disp, _mesa_WindowPos2dMESA);
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SET_WindowPos2dvMESA(disp, _mesa_WindowPos2dvMESA);
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SET_WindowPos2fMESA(disp, _mesa_WindowPos2fMESA);
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SET_WindowPos2fvMESA(disp, _mesa_WindowPos2fvMESA);
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SET_WindowPos2iMESA(disp, _mesa_WindowPos2iMESA);
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|
SET_WindowPos2ivMESA(disp, _mesa_WindowPos2ivMESA);
|
|
SET_WindowPos2sMESA(disp, _mesa_WindowPos2sMESA);
|
|
SET_WindowPos2svMESA(disp, _mesa_WindowPos2svMESA);
|
|
SET_WindowPos3dMESA(disp, _mesa_WindowPos3dMESA);
|
|
SET_WindowPos3dvMESA(disp, _mesa_WindowPos3dvMESA);
|
|
SET_WindowPos3fMESA(disp, _mesa_WindowPos3fMESA);
|
|
SET_WindowPos3fvMESA(disp, _mesa_WindowPos3fvMESA);
|
|
SET_WindowPos3iMESA(disp, _mesa_WindowPos3iMESA);
|
|
SET_WindowPos3ivMESA(disp, _mesa_WindowPos3ivMESA);
|
|
SET_WindowPos3sMESA(disp, _mesa_WindowPos3sMESA);
|
|
SET_WindowPos3svMESA(disp, _mesa_WindowPos3svMESA);
|
|
SET_WindowPos4dMESA(disp, _mesa_WindowPos4dMESA);
|
|
SET_WindowPos4dvMESA(disp, _mesa_WindowPos4dvMESA);
|
|
SET_WindowPos4fMESA(disp, _mesa_WindowPos4fMESA);
|
|
SET_WindowPos4fvMESA(disp, _mesa_WindowPos4fvMESA);
|
|
SET_WindowPos4iMESA(disp, _mesa_WindowPos4iMESA);
|
|
SET_WindowPos4ivMESA(disp, _mesa_WindowPos4ivMESA);
|
|
SET_WindowPos4sMESA(disp, _mesa_WindowPos4sMESA);
|
|
SET_WindowPos4svMESA(disp, _mesa_WindowPos4svMESA);
|
|
}
|
|
|
|
|
|
#endif /* FEATURE_rastpos */
|
|
|
|
|
|
/**********************************************************************/
|
|
/** \name Initialization */
|
|
/**********************************************************************/
|
|
/*@{*/
|
|
|
|
/**
|
|
* Initialize the context current raster position information.
|
|
*
|
|
* \param ctx GL context.
|
|
*
|
|
* Initialize the current raster position information in
|
|
* __struct gl_contextRec::Current, and adds the extension entry points to the
|
|
* dispatcher.
|
|
*/
|
|
void _mesa_init_rastpos( struct gl_context * ctx )
|
|
{
|
|
ASSIGN_4V( ctx->Current.RasterPos, 0.0, 0.0, 0.0, 1.0 );
|
|
ctx->Current.RasterDistance = 0.0;
|
|
ASSIGN_4V( ctx->Current.RasterColor, 1.0, 1.0, 1.0, 1.0 );
|
|
ASSIGN_4V( ctx->Current.RasterTexCoords, 0.0, 0.0, 0.0, 1.0 );
|
|
ctx->Current.RasterPosValid = GL_TRUE;
|
|
}
|
|
|
|
/*@}*/
|