-/* $Id: rastpos.c,v 1.5 2000/02/02 19:17:57 brianp Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 3.3
- *
- * Copyright (C) 1999 Brian Paul All Rights Reserved.
- *
+ * Version: 6.5.3
+ *
+ * Copyright (C) 1999-2007 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
*/
-#ifdef PC_HEADER
-#include "all.h"
-#else
+/**
+ * \file rastpos.c
+ * Raster position operations.
+ */
+
#include "glheader.h"
-#include "clip.h"
#include "context.h"
#include "feedback.h"
-#include "light.h"
#include "macros.h"
-#include "matrix.h"
-#include "mmath.h"
#include "rastpos.h"
-#include "shade.h"
#include "state.h"
-#include "types.h"
-#include "xform.h"
-#endif
-/*
- * Caller: context->API.RasterPos4f
+/**
+ * Helper function for all the RasterPos functions.
*/
-static void raster_pos4f( GLcontext *ctx,
- GLfloat x, GLfloat y, GLfloat z, GLfloat w )
+static void
+rasterpos(GLfloat x, GLfloat y, GLfloat z, GLfloat w)
{
- GLfloat v[4], eye[4], clip[4], ndc[3], d;
-
- /* KW: Added this test, which is in the spec. We can't do this
- * outside begin/end any more because the ctx->Current values
- * aren't uptodate during that period.
- */
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH( ctx, "glRasterPos" );
-
- if (ctx->NewState)
- gl_update_state( ctx );
-
- ASSIGN_4V( v, x, y, z, w );
- TRANSFORM_POINT( eye, ctx->ModelView.m, v );
-
- /* raster color */
- if (ctx->Light.Enabled)
- {
- /*GLfloat *vert;*/
- GLfloat *norm, eyenorm[3];
- GLfloat *objnorm = ctx->Current.Normal;
-
- /* Not needed???
- vert = (ctx->NeedEyeCoords ? eye : v);
- */
-
- if (ctx->NeedEyeNormals) {
- GLfloat *inv = ctx->ModelView.inv;
- TRANSFORM_NORMAL( eyenorm, objnorm, inv );
- norm = eyenorm;
- } else {
- norm = objnorm;
- }
-
- gl_shade_rastpos( ctx, v, norm,
- ctx->Current.RasterColor,
- &ctx->Current.RasterIndex );
-
- }
- else {
- /* use current color or index */
- if (ctx->Visual->RGBAflag) {
- UBYTE_RGBA_TO_FLOAT_RGBA(ctx->Current.RasterColor,
- ctx->Current.ByteColor);
- }
- else {
- ctx->Current.RasterIndex = ctx->Current.Index;
- }
- }
-
- /* compute raster distance */
- ctx->Current.RasterDistance = (GLfloat)
- GL_SQRT( eye[0]*eye[0] + eye[1]*eye[1] + eye[2]*eye[2] );
-
- /* apply projection matrix: clip = Proj * eye */
- TRANSFORM_POINT( clip, ctx->ProjectionMatrix.m, eye );
-
- /* clip to view volume */
- if (gl_viewclip_point( clip )==0) {
- ctx->Current.RasterPosValid = GL_FALSE;
- return;
- }
-
- /* clip to user clipping planes */
- if ( ctx->Transform.AnyClip &&
- gl_userclip_point(ctx, clip) == 0)
- {
- ctx->Current.RasterPosValid = GL_FALSE;
- return;
- }
-
- /* ndc = clip / W */
- ASSERT( clip[3]!=0.0 );
- d = 1.0F / clip[3];
- ndc[0] = clip[0] * d;
- ndc[1] = clip[1] * d;
- ndc[2] = clip[2] * d;
-
- ctx->Current.RasterPos[0] = (ndc[0] * ctx->Viewport.WindowMap.m[MAT_SX] +
- ctx->Viewport.WindowMap.m[MAT_TX]);
- ctx->Current.RasterPos[1] = (ndc[1] * ctx->Viewport.WindowMap.m[MAT_SY] +
- ctx->Viewport.WindowMap.m[MAT_TY]);
- ctx->Current.RasterPos[2] = (ndc[2] * ctx->Viewport.WindowMap.m[MAT_SZ] +
- ctx->Viewport.WindowMap.m[MAT_TZ]) / DEPTH_SCALE;
- ctx->Current.RasterPos[3] = clip[3];
- ctx->Current.RasterPosValid = GL_TRUE;
+ GET_CURRENT_CONTEXT(ctx);
+ GLfloat p[4];
- /* FOG??? */
+ p[0] = x;
+ p[1] = y;
+ p[2] = z;
+ p[3] = w;
- {
- GLuint texSet;
- for (texSet=0; texSet<MAX_TEXTURE_UNITS; texSet++) {
- COPY_4FV( ctx->Current.RasterMultiTexCoord[texSet],
- ctx->Current.Texcoord[texSet] );
- }
- }
+ ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+ FLUSH_CURRENT(ctx, 0);
- if (ctx->RenderMode==GL_SELECT) {
- gl_update_hitflag( ctx, ctx->Current.RasterPos[2] );
- }
+ if (ctx->NewState)
+ _mesa_update_state( ctx );
+ ctx->Driver.RasterPos(ctx, p);
}
-
-void
+void GLAPIENTRY
_mesa_RasterPos2d(GLdouble x, GLdouble y)
{
- _mesa_RasterPos4f(x, y, 0.0F, 1.0F);
+ rasterpos((GLfloat)x, (GLfloat)y, (GLfloat)0.0, (GLfloat)1.0);
}
-void
+void GLAPIENTRY
_mesa_RasterPos2f(GLfloat x, GLfloat y)
{
- _mesa_RasterPos4f(x, y, 0.0F, 1.0F);
+ rasterpos(x, y, 0.0F, 1.0F);
}
-void
+void GLAPIENTRY
_mesa_RasterPos2i(GLint x, GLint y)
{
- _mesa_RasterPos4f(x, y, 0.0F, 1.0F);
+ rasterpos((GLfloat) x, (GLfloat) y, 0.0F, 1.0F);
}
-void
+void GLAPIENTRY
_mesa_RasterPos2s(GLshort x, GLshort y)
{
- _mesa_RasterPos4f(x, y, 0.0F, 1.0F);
+ rasterpos(x, y, 0.0F, 1.0F);
}
-void
+void GLAPIENTRY
_mesa_RasterPos3d(GLdouble x, GLdouble y, GLdouble z)
{
- _mesa_RasterPos4f(x, y, z, 1.0F);
+ rasterpos((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F);
}
-void
+void GLAPIENTRY
_mesa_RasterPos3f(GLfloat x, GLfloat y, GLfloat z)
{
- _mesa_RasterPos4f(x, y, z, 1.0F);
+ rasterpos(x, y, z, 1.0F);
}
-void
+void GLAPIENTRY
_mesa_RasterPos3i(GLint x, GLint y, GLint z)
{
- _mesa_RasterPos4f(x, y, z, 1.0F);
+ rasterpos((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F);
}
-void
+void GLAPIENTRY
_mesa_RasterPos3s(GLshort x, GLshort y, GLshort z)
{
- _mesa_RasterPos4f(x, y, z, 1.0F);
+ rasterpos(x, y, z, 1.0F);
}
-void
+void GLAPIENTRY
_mesa_RasterPos4d(GLdouble x, GLdouble y, GLdouble z, GLdouble w)
{
- _mesa_RasterPos4f(x, y, z, w);
+ rasterpos((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w);
}
-void
+void GLAPIENTRY
_mesa_RasterPos4f(GLfloat x, GLfloat y, GLfloat z, GLfloat w)
{
- GET_CURRENT_CONTEXT(ctx);
- raster_pos4f(ctx, x, y, z, w);
+ rasterpos(x, y, z, w);
}
-void
+void GLAPIENTRY
_mesa_RasterPos4i(GLint x, GLint y, GLint z, GLint w)
{
- _mesa_RasterPos4f(x, y, z, w);
+ rasterpos((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w);
}
-void
+void GLAPIENTRY
_mesa_RasterPos4s(GLshort x, GLshort y, GLshort z, GLshort w)
{
- _mesa_RasterPos4f(x, y, z, w);
+ rasterpos(x, y, z, w);
}
-void
+void GLAPIENTRY
_mesa_RasterPos2dv(const GLdouble *v)
{
- _mesa_RasterPos4f(v[0], v[1], 0.0F, 1.0F);
+ rasterpos((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F);
}
-void
+void GLAPIENTRY
_mesa_RasterPos2fv(const GLfloat *v)
{
- _mesa_RasterPos4f(v[0], v[1], 0.0F, 1.0F);
+ rasterpos(v[0], v[1], 0.0F, 1.0F);
}
-void
+void GLAPIENTRY
_mesa_RasterPos2iv(const GLint *v)
{
- _mesa_RasterPos4f(v[0], v[1], 0.0F, 1.0F);
+ rasterpos((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F);
}
-void
+void GLAPIENTRY
_mesa_RasterPos2sv(const GLshort *v)
{
- _mesa_RasterPos4f(v[0], v[1], 0.0F, 1.0F);
+ rasterpos(v[0], v[1], 0.0F, 1.0F);
}
-void
+void GLAPIENTRY
_mesa_RasterPos3dv(const GLdouble *v)
{
- _mesa_RasterPos4f(v[0], v[1], v[2], 1.0F);
+ rasterpos((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F);
}
-void
+void GLAPIENTRY
_mesa_RasterPos3fv(const GLfloat *v)
{
- _mesa_RasterPos4f(v[0], v[1], v[2], 1.0F);
+ rasterpos(v[0], v[1], v[2], 1.0F);
}
-void
+void GLAPIENTRY
_mesa_RasterPos3iv(const GLint *v)
{
- _mesa_RasterPos4f(v[0], v[1], v[2], 1.0F);
+ rasterpos((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F);
}
-void
+void GLAPIENTRY
_mesa_RasterPos3sv(const GLshort *v)
{
- _mesa_RasterPos4f(v[0], v[1], v[2], 1.0F);
+ rasterpos(v[0], v[1], v[2], 1.0F);
}
-void
+void GLAPIENTRY
_mesa_RasterPos4dv(const GLdouble *v)
{
- _mesa_RasterPos4f(v[0], v[1], v[2], v[3]);
+ rasterpos((GLfloat) v[0], (GLfloat) v[1],
+ (GLfloat) v[2], (GLfloat) v[3]);
}
-void
+void GLAPIENTRY
_mesa_RasterPos4fv(const GLfloat *v)
{
- _mesa_RasterPos4f(v[0], v[1], v[2], v[3]);
+ rasterpos(v[0], v[1], v[2], v[3]);
}
-void
+void GLAPIENTRY
_mesa_RasterPos4iv(const GLint *v)
{
- _mesa_RasterPos4f(v[0], v[1], v[2], v[3]);
+ rasterpos((GLfloat) v[0], (GLfloat) v[1],
+ (GLfloat) v[2], (GLfloat) v[3]);
}
-void
+void GLAPIENTRY
_mesa_RasterPos4sv(const GLshort *v)
{
- _mesa_RasterPos4f(v[0], v[1], v[2], v[3]);
+ rasterpos(v[0], v[1], v[2], v[3]);
+}
+
+
+/**********************************************************************/
+/*** GL_ARB_window_pos / GL_MESA_window_pos ***/
+/**********************************************************************/
+
+#if FEATURE_drawpix
+/**
+ * All glWindowPosMESA and glWindowPosARB commands call this function to
+ * update the current raster position.
+ */
+static void
+window_pos3f(GLfloat x, GLfloat y, GLfloat z)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ GLfloat z2;
+
+ ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+ FLUSH_CURRENT(ctx, 0);
+
+ z2 = CLAMP(z, 0.0F, 1.0F) * (ctx->Viewport.Far - ctx->Viewport.Near)
+ + ctx->Viewport.Near;
+
+ /* set raster position */
+ ctx->Current.RasterPos[0] = x;
+ ctx->Current.RasterPos[1] = y;
+ ctx->Current.RasterPos[2] = z2;
+ ctx->Current.RasterPos[3] = 1.0F;
+
+ ctx->Current.RasterPosValid = GL_TRUE;
+
+ if (ctx->Fog.FogCoordinateSource == GL_FOG_COORDINATE_EXT)
+ ctx->Current.RasterDistance = ctx->Current.Attrib[VERT_ATTRIB_FOG][0];
+ else
+ ctx->Current.RasterDistance = 0.0;
+
+ /* raster color = current color or index */
+ if (ctx->Visual.rgbMode) {
+ ctx->Current.RasterColor[0]
+ = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR0][0], 0.0F, 1.0F);
+ ctx->Current.RasterColor[1]
+ = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR0][1], 0.0F, 1.0F);
+ ctx->Current.RasterColor[2]
+ = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR0][2], 0.0F, 1.0F);
+ ctx->Current.RasterColor[3]
+ = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR0][3], 0.0F, 1.0F);
+ ctx->Current.RasterSecondaryColor[0]
+ = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR1][0], 0.0F, 1.0F);
+ ctx->Current.RasterSecondaryColor[1]
+ = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR1][1], 0.0F, 1.0F);
+ ctx->Current.RasterSecondaryColor[2]
+ = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR1][2], 0.0F, 1.0F);
+ ctx->Current.RasterSecondaryColor[3]
+ = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR1][3], 0.0F, 1.0F);
+ }
+ else {
+ ctx->Current.RasterIndex
+ = ctx->Current.Attrib[VERT_ATTRIB_COLOR_INDEX][0];
+ }
+
+ /* raster texcoord = current texcoord */
+ {
+ GLuint texSet;
+ for (texSet = 0; texSet < ctx->Const.MaxTextureCoordUnits; texSet++) {
+ COPY_4FV( ctx->Current.RasterTexCoords[texSet],
+ ctx->Current.Attrib[VERT_ATTRIB_TEX0 + texSet] );
+ }
+ }
+
+ if (ctx->RenderMode==GL_SELECT) {
+ _mesa_update_hitflag( ctx, ctx->Current.RasterPos[2] );
+ }
+}
+
+
+/* This is just to support the GL_MESA_window_pos version */
+static void
+window_pos4f(GLfloat x, GLfloat y, GLfloat z, GLfloat w)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ window_pos3f(x, y, z);
+ ctx->Current.RasterPos[3] = w;
+}
+
+
+void GLAPIENTRY
+_mesa_WindowPos2dMESA(GLdouble x, GLdouble y)
+{
+ window_pos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos2fMESA(GLfloat x, GLfloat y)
+{
+ window_pos4f(x, y, 0.0F, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos2iMESA(GLint x, GLint y)
+{
+ window_pos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos2sMESA(GLshort x, GLshort y)
+{
+ window_pos4f(x, y, 0.0F, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos3dMESA(GLdouble x, GLdouble y, GLdouble z)
+{
+ window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos3fMESA(GLfloat x, GLfloat y, GLfloat z)
+{
+ window_pos4f(x, y, z, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos3iMESA(GLint x, GLint y, GLint z)
+{
+ window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos3sMESA(GLshort x, GLshort y, GLshort z)
+{
+ window_pos4f(x, y, z, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos4dMESA(GLdouble x, GLdouble y, GLdouble z, GLdouble w)
+{
+ window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos4fMESA(GLfloat x, GLfloat y, GLfloat z, GLfloat w)
+{
+ window_pos4f(x, y, z, w);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos4iMESA(GLint x, GLint y, GLint z, GLint w)
+{
+ window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos4sMESA(GLshort x, GLshort y, GLshort z, GLshort w)
+{
+ window_pos4f(x, y, z, w);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos2dvMESA(const GLdouble *v)
+{
+ window_pos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos2fvMESA(const GLfloat *v)
+{
+ window_pos4f(v[0], v[1], 0.0F, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos2ivMESA(const GLint *v)
+{
+ window_pos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos2svMESA(const GLshort *v)
+{
+ window_pos4f(v[0], v[1], 0.0F, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos3dvMESA(const GLdouble *v)
+{
+ window_pos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos3fvMESA(const GLfloat *v)
+{
+ window_pos4f(v[0], v[1], v[2], 1.0);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos3ivMESA(const GLint *v)
+{
+ window_pos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos3svMESA(const GLshort *v)
+{
+ window_pos4f(v[0], v[1], v[2], 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos4dvMESA(const GLdouble *v)
+{
+ window_pos4f((GLfloat) v[0], (GLfloat) v[1],
+ (GLfloat) v[2], (GLfloat) v[3]);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos4fvMESA(const GLfloat *v)
+{
+ window_pos4f(v[0], v[1], v[2], v[3]);
}
+
+void GLAPIENTRY
+_mesa_WindowPos4ivMESA(const GLint *v)
+{
+ window_pos4f((GLfloat) v[0], (GLfloat) v[1],
+ (GLfloat) v[2], (GLfloat) v[3]);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos4svMESA(const GLshort *v)
+{
+ window_pos4f(v[0], v[1], v[2], v[3]);
+}
+
+#endif
+
+#if 0
+
+/*
+ * OpenGL implementation of glWindowPos*MESA()
+ */
+void glWindowPos4fMESA( GLfloat x, GLfloat y, GLfloat z, GLfloat w )
+{
+ GLfloat fx, fy;
+
+ /* Push current matrix mode and viewport attributes */
+ glPushAttrib( GL_TRANSFORM_BIT | GL_VIEWPORT_BIT );
+
+ /* Setup projection parameters */
+ glMatrixMode( GL_PROJECTION );
+ glPushMatrix();
+ glLoadIdentity();
+ glMatrixMode( GL_MODELVIEW );
+ glPushMatrix();
+ glLoadIdentity();
+
+ glDepthRange( z, z );
+ glViewport( (int) x - 1, (int) y - 1, 2, 2 );
+
+ /* set the raster (window) position */
+ fx = x - (int) x;
+ fy = y - (int) y;
+ glRasterPos4f( fx, fy, 0.0, w );
+
+ /* restore matrices, viewport and matrix mode */
+ glPopMatrix();
+ glMatrixMode( GL_PROJECTION );
+ glPopMatrix();
+
+ glPopAttrib();
+}
+
+#endif
+
+
+/**********************************************************************/
+/** \name Initialization */
+/**********************************************************************/
+/*@{*/
+
+/**
+ * Initialize the context current raster position information.
+ *
+ * \param ctx GL context.
+ *
+ * Initialize the current raster position information in
+ * __GLcontextRec::Current, and adds the extension entry points to the
+ * dispatcher.
+ */
+void _mesa_init_rastpos( GLcontext * ctx )
+{
+ int i;
+
+ 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.RasterSecondaryColor, 0.0, 0.0, 0.0, 1.0 );
+ ctx->Current.RasterIndex = 1.0;
+ for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++)
+ ASSIGN_4V( ctx->Current.RasterTexCoords[i], 0.0, 0.0, 0.0, 1.0 );
+ ctx->Current.RasterPosValid = GL_TRUE;
+}
+
+/*@}*/
projects / mesa.git / blobdiff