/* 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);
}
INTERP_QUALIFIER void TAG(interp_extras)( GLcontext *ctx,
GLfloat t,
GLuint dst, GLuint out, GLuint in,
GLboolean force_boundary )
{
LOCALVARS
struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
if (VB->ColorPtr[1]) {
assert(VB->ColorPtr[1]->stride == 4 * sizeof(GLfloat));
INTERP_4F( t,
GET_COLOR(VB->ColorPtr[1], dst),
GET_COLOR(VB->ColorPtr[1], out),
GET_COLOR(VB->ColorPtr[1], in) );
if (VB->SecondaryColorPtr[1]) {
INTERP_3F( t,
GET_COLOR(VB->SecondaryColorPtr[1], dst),
GET_COLOR(VB->SecondaryColorPtr[1], out),
GET_COLOR(VB->SecondaryColorPtr[1], in) );
}
}
if (VB->EdgeFlag) {
VB->EdgeFlag[dst] = VB->EdgeFlag[out] || force_boundary;
}
INTERP_VERTEX(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]) {
/* If stride is zero, ColorPtr[1] is constant across the VB, so
* there is no point interpolating between two values as they will
* be identical. This case is handled in t_dd_tritmp.h
*/
if (VB->ColorPtr[1]->stride) {
assert(VB->ColorPtr[1]->stride == 4 * sizeof(GLfloat));
INTERP_4F( t,
GET_COLOR(VB->ColorPtr[1], dst),
GET_COLOR(VB->ColorPtr[1], out),
GET_COLOR(VB->ColorPtr[1], in) );
}
if (VB->SecondaryColorPtr[1]) {
INTERP_3F( t,
GET_COLOR(VB->SecondaryColorPtr[1], dst),
GET_COLOR(VB->SecondaryColorPtr[1], out),
GET_COLOR(VB->SecondaryColorPtr[1], in) );
}
}
if (VB->EdgeFlag) {
VB->EdgeFlag[dst] = VB->EdgeFlag[out] || force_boundary;
}
setup_tab[FX_CONTEXT(ctx)->SetupIndex].interp(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);
}
void _tnl_generic_interp( struct gl_context *ctx,
GLfloat t,
GLuint edst, GLuint eout, GLuint ein,
GLboolean force_boundary )
{
TNLcontext *tnl = TNL_CONTEXT(ctx);
struct vertex_buffer *VB = &tnl->vb;
struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
const GLubyte *vin = vtx->vertex_buf + ein * vtx->vertex_size;
const GLubyte *vout = vtx->vertex_buf + eout * vtx->vertex_size;
GLubyte *vdst = vtx->vertex_buf + edst * vtx->vertex_size;
const struct tnl_clipspace_attr *a = vtx->attr;
const GLuint attr_count = vtx->attr_count;
GLuint j;
(void) force_boundary;
if (tnl->NeedNdcCoords) {
const GLfloat *dstclip = VB->ClipPtr->data[edst];
if (dstclip[3] != 0.0) {
const GLfloat w = 1.0f / dstclip[3];
GLfloat pos[4];
pos[0] = dstclip[0] * w;
pos[1] = dstclip[1] * w;
pos[2] = dstclip[2] * w;
pos[3] = w;
a[0].insert[4-1]( &a[0], vdst, pos );
}
}
else {
a[0].insert[4-1]( &a[0], vdst, VB->ClipPtr->data[edst] );
}
for (j = 1; j < attr_count; j++) {
GLfloat fin[4], fout[4], fdst[4];
a[j].extract( &a[j], fin, vin + a[j].vertoffset );
a[j].extract( &a[j], fout, vout + a[j].vertoffset );
INTERP_4F(t, fdst, fout, fin);
a[j].insert[4-1]( &a[j], vdst + a[j].vertoffset, fdst );
}
}
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;
/*fprintf(stderr, "%s\n", __FUNCTION__);*/
if (VB->ColorPtr[1]) {
INTERP_4F( t,
GET_COLOR(VB->ColorPtr[1], dst),
GET_COLOR(VB->ColorPtr[1], out),
GET_COLOR(VB->ColorPtr[1], in) );
}
if (VB->EdgeFlag) {
VB->EdgeFlag[dst] = VB->EdgeFlag[out] || force_boundary;
}
setup_tab[TDFX_CONTEXT(ctx)->SetupIndex].interp(ctx, t, dst, out, in,
force_boundary);
}
