-/* $Id: clip.c,v 1.18 2000/11/27 18:22:13 brianp Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 3.3
+ * Version: 6.3
*
- * Copyright (C) 1999 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2005 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"),
*/
-#ifdef PC_HEADER
-#include "all.h"
-#else
#include "glheader.h"
#include "clip.h"
#include "context.h"
#include "macros.h"
-#include "mmath.h"
#include "mtypes.h"
#include "math/m_xform.h"
#include "math/m_matrix.h"
-#endif
-
-
-
-void
+void GLAPIENTRY
_mesa_ClipPlane( GLenum plane, const GLdouble *eq )
{
GET_CURRENT_CONTEXT(ctx);
GLint p;
GLfloat equation[4];
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glClipPlane");
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
p = (GLint) plane - (GLint) GL_CLIP_PLANE0;
- if (p < 0 || p >= ctx->Const.MaxClipPlanes) {
- gl_error( ctx, GL_INVALID_ENUM, "glClipPlane" );
+ if (p < 0 || p >= (GLint) ctx->Const.MaxClipPlanes) {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glClipPlane" );
return;
}
- equation[0] = eq[0];
- equation[1] = eq[1];
- equation[2] = eq[2];
- equation[3] = eq[3];
+ equation[0] = (GLfloat) eq[0];
+ equation[1] = (GLfloat) eq[1];
+ equation[2] = (GLfloat) eq[2];
+ equation[3] = (GLfloat) eq[3];
/*
* The equation is transformed by the transpose of the inverse of the
* clipping now takes place. The clip-space equations are recalculated
* whenever the projection matrix changes.
*/
- if (ctx->ModelView.flags & MAT_DIRTY)
- _math_matrix_analyse( &ctx->ModelView );
+ if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top))
+ _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
- gl_transform_vector( ctx->Transform.EyeUserPlane[p], equation,
- ctx->ModelView.inv );
+ _mesa_transform_vector( equation, equation,
+ ctx->ModelviewMatrixStack.Top->inv );
+ if (TEST_EQ_4V(ctx->Transform.EyeUserPlane[p], equation))
+ return;
+
+ FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
+ COPY_4FV(ctx->Transform.EyeUserPlane[p], equation);
/* Update derived state. This state also depends on the projection
* matrix, and is recalculated on changes to the projection matrix by
- * code in gl_update_state().
+ * code in _mesa_update_state().
*/
- if (ctx->Transform.ClipEnabled[p]) {
- if (ctx->ProjectionMatrix.flags & MAT_DIRTY)
- _math_matrix_analyse( &ctx->ProjectionMatrix );
+ if (ctx->Transform.ClipPlanesEnabled & (1 << p)) {
+ if (_math_matrix_is_dirty(ctx->ProjectionMatrixStack.Top))
+ _math_matrix_analyse( ctx->ProjectionMatrixStack.Top );
- gl_transform_vector( ctx->Transform._ClipUserPlane[p],
+ _mesa_transform_vector( ctx->Transform._ClipUserPlane[p],
ctx->Transform.EyeUserPlane[p],
- ctx->ProjectionMatrix.inv );
+ ctx->ProjectionMatrixStack.Top->inv );
}
- ctx->NewState |= _NEW_TRANSFORM;
-
if (ctx->Driver.ClipPlane)
ctx->Driver.ClipPlane( ctx, plane, equation );
}
-void
+void GLAPIENTRY
_mesa_GetClipPlane( GLenum plane, GLdouble *equation )
{
GET_CURRENT_CONTEXT(ctx);
GLint p;
-
- ASSERT_OUTSIDE_BEGIN_END(ctx, "glGetClipPlane");
-
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
p = (GLint) (plane - GL_CLIP_PLANE0);
- if (p < 0 || p >= ctx->Const.MaxClipPlanes) {
- gl_error( ctx, GL_INVALID_ENUM, "glGetClipPlane" );
+ if (p < 0 || p >= (GLint) ctx->Const.MaxClipPlanes) {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetClipPlane" );
return;
}
equation[2] = (GLdouble) ctx->Transform.EyeUserPlane[p][2];
equation[3] = (GLdouble) ctx->Transform.EyeUserPlane[p][3];
}
+
+void GLAPIENTRY
+_mesa_CullParameterfvEXT (GLenum cap, GLfloat *v)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ switch (cap) {
+ case GL_CULL_VERTEX_EYE_POSITION_EXT:
+ FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
+ COPY_4FV(ctx->Transform.CullEyePos, v);
+
+ _mesa_transform_vector( ctx->Transform.CullObjPos,
+ ctx->Transform.CullEyePos,
+ ctx->ModelviewMatrixStack.Top->inv );
+ break;
+
+ case GL_CULL_VERTEX_OBJECT_POSITION_EXT:
+ FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
+ COPY_4FV(ctx->Transform.CullObjPos, v);
+
+ _mesa_transform_vector( ctx->Transform.CullEyePos,
+ ctx->Transform.CullObjPos,
+ ctx->ModelviewMatrixStack.Top->m );
+ break;
+ default:
+ _mesa_error( ctx, GL_INVALID_ENUM, "glCullParameterfvEXT" );
+ }
+}
+
+void GLAPIENTRY
+_mesa_CullParameterdvEXT (GLenum cap, GLdouble *v)
+{
+ GLfloat f[4];
+
+ f[0] = (GLfloat)v[0];
+ f[1] = (GLfloat)v[1];
+ f[2] = (GLfloat)v[2];
+ f[3] = (GLfloat)v[3];
+
+ _mesa_CullParameterfvEXT(cap, f);
+}
+