/* KW: If are compiling, we don't know whether eval will produce a
* vertex when it is run in the future. If this is pure immediate
* mode, eval is a noop if neither vertex map is enabled.
*
* Thus we need to have a check in the display list code or
* elsewhere for eval(1,2) vertices in the case where
* map(1,2)_vertex is disabled, and to purge those vertices from
* the vb.
*/
void GLAPIENTRY _mesa_noop_EvalMesh1( GLenum mode, GLint i1, GLint i2 )
{
GET_CURRENT_CONTEXT(ctx);
GLint i;
GLfloat u, du;
GLenum prim;
switch (mode) {
case GL_POINT:
prim = GL_POINTS;
break;
case GL_LINE:
prim = GL_LINE_STRIP;
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glEvalMesh1(mode)" );
return;
}
/* No effect if vertex maps disabled.
*/
if (!ctx->Eval.Map1Vertex4 &&
!ctx->Eval.Map1Vertex3 &&
!(ctx->VertexProgram._Enabled && ctx->Eval.Map1Attrib[VERT_ATTRIB_POS]))
return;
du = ctx->Eval.MapGrid1du;
u = ctx->Eval.MapGrid1u1 + i1 * du;
CALL_Begin(GET_DISPATCH(), (prim));
for (i=i1;i<=i2;i++,u+=du) {
CALL_EvalCoord1f(GET_DISPATCH(), (u));
}
CALL_End(GET_DISPATCH(), ());
}
static void GLAPIENTRY
_save_EvalCoord1f(GLfloat u)
{
GET_CURRENT_CONTEXT(ctx);
dlist_fallback(ctx);
CALL_EvalCoord1f(ctx->Save, (u));
}
static void GLAPIENTRY
vbo_exec_EvalMesh1(GLenum mode, GLint i1, GLint i2)
{
GET_CURRENT_CONTEXT(ctx);
GLint i;
GLfloat u, du;
GLenum prim;
ASSERT_OUTSIDE_BEGIN_END(ctx);
switch (mode) {
case GL_POINT:
prim = GL_POINTS;
break;
case GL_LINE:
prim = GL_LINE_STRIP;
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glEvalMesh1(mode)" );
return;
}
/* No effect if vertex maps disabled.
*/
if (!ctx->Eval.Map1Vertex4 &&
!ctx->Eval.Map1Vertex3)
return;
du = ctx->Eval.MapGrid1du;
u = ctx->Eval.MapGrid1u1 + i1 * du;
CALL_Begin(GET_DISPATCH(), (prim));
for (i=i1;i<=i2;i++,u+=du) {
CALL_EvalCoord1f(GET_DISPATCH(), (u));
}
CALL_End(GET_DISPATCH(), ());
}
static void GLAPIENTRY _save_EvalCoord1f( GLfloat u )
{
GET_CURRENT_CONTEXT(ctx);
DO_FALLBACK(ctx);
CALL_EvalCoord1f(ctx->Save, (u));
}
