/* All attributes are float[4], so this is easy:
*/
static void interp_attr( float dst[4],
float t,
const float in[4],
const float out[4] )
{
dst[0] = LINTERP( t, out[0], in[0] );
dst[1] = LINTERP( t, out[1], in[1] );
dst[2] = LINTERP( t, out[2], in[2] );
dst[3] = LINTERP( t, out[3], in[3] );
}
/* All attributes are float[4], so this is easy:
*/
static void interp_attr( float *fdst,
float t,
const float *fin,
const float *fout )
{
fdst[0] = LINTERP( t, fout[0], fin[0] );
fdst[1] = LINTERP( t, fout[1], fin[1] );
fdst[2] = LINTERP( t, fout[2], fin[2] );
fdst[3] = LINTERP( t, fout[3], fin[3] );
}
/* Helper functions for hardware which doesn't put back colors and/or
* edgeflags into vertices.
*/
void _tnl_generic_interp_extras( struct gl_context *ctx,
GLfloat t,
GLuint dst, GLuint out, GLuint in,
GLboolean force_boundary )
{
struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
/* If stride is zero, BackfaceColorPtr is constant across the VB, so
* there is no point interpolating between two values as they will
* be identical. In all other cases, this value is generated by
* t_vb_lighttmp.h and has a stride of 4 dwords.
*/
if (VB->BackfaceColorPtr && VB->BackfaceColorPtr->stride) {
assert(VB->BackfaceColorPtr->stride == 4 * sizeof(GLfloat));
INTERP_4F( t,
VB->BackfaceColorPtr->data[dst],
VB->BackfaceColorPtr->data[out],
VB->BackfaceColorPtr->data[in] );
}
if (VB->BackfaceIndexPtr) {
VB->BackfaceIndexPtr->data[dst][0] = LINTERP( t,
VB->BackfaceIndexPtr->data[out][0],
VB->BackfaceIndexPtr->data[in][0] );
}
if (VB->EdgeFlag) {
VB->EdgeFlag[dst] = VB->EdgeFlag[out] || force_boundary;
}
_tnl_generic_interp(ctx, t, dst, out, in, force_boundary);
}
static void interp_extras( GLcontext *ctx,
GLfloat t,
GLuint dst, GLuint out, GLuint in,
GLboolean force_boundary )
{
struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
if (VB->ColorPtr[1]) {
INTERP_4CHAN( t,
GET_COLOR(VB->ColorPtr[1], dst),
GET_COLOR(VB->ColorPtr[1], out),
GET_COLOR(VB->ColorPtr[1], in) );
if (VB->SecondaryColorPtr[1]) {
INTERP_3CHAN( t,
GET_COLOR(VB->SecondaryColorPtr[1], dst),
GET_COLOR(VB->SecondaryColorPtr[1], out),
GET_COLOR(VB->SecondaryColorPtr[1], in) );
}
}
else if (VB->IndexPtr[1]) {
VB->IndexPtr[1]->data[dst] = (GLuint) (GLint)
LINTERP( t,
(GLfloat) VB->IndexPtr[1]->data[out],
(GLfloat) VB->IndexPtr[1]->data[in] );
}
if (VB->EdgeFlag) {
VB->EdgeFlag[dst] = VB->EdgeFlag[out] || force_boundary;
}
interp_tab[SWSETUP_CONTEXT(ctx)->SetupIndex](ctx, t, dst, out, in,
force_boundary);
}
/* Helper functions for hardware which doesn't put back colors and/or
* edgeflags into vertices.
*/
static void generic_interp_extras( GLcontext *ctx,
GLfloat t,
GLuint dst, GLuint out, GLuint in,
GLboolean force_boundary )
{
struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
if (VB->ColorPtr[1]) {
assert(VB->ColorPtr[1]->stride == 4 * sizeof(GLfloat));
INTERP_4F( t,
VB->ColorPtr[1]->data[dst],
VB->ColorPtr[1]->data[out],
VB->ColorPtr[1]->data[in] );
if (VB->SecondaryColorPtr[1]) {
INTERP_3F( t,
VB->SecondaryColorPtr[1]->data[dst],
VB->SecondaryColorPtr[1]->data[out],
VB->SecondaryColorPtr[1]->data[in] );
}
}
else if (VB->IndexPtr[1]) {
VB->IndexPtr[1]->data[dst][0] = LINTERP( t,
VB->IndexPtr[1]->data[out][0],
VB->IndexPtr[1]->data[in][0] );
}
if (VB->EdgeFlag) {
VB->EdgeFlag[dst] = VB->EdgeFlag[out] || force_boundary;
}
generic_interp(ctx, t, dst, out, in, force_boundary);
}
