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/*
* Mesa 3-D graphics library
* Version: 5.1
*
* Copyright (C) 1999-2003 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
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Authors:
* Keith Whitwell <keith@tungstengraphics.com>
*/
static void TAG(emit)(GLcontext *ctx, GLuint start, GLuint end,
GLuint newinputs )
{
TNLcontext *tnl = TNL_CONTEXT(ctx);
struct vertex_buffer *VB = &tnl->vb;
SWvertex *v;
const GLfloat *ndc; /* NDC (i.e. projected clip coordinates) */
const GLfloat *tc[MAX_TEXTURE_COORD_UNITS];
const GLfloat *color;
const GLfloat *spec;
const GLfloat *index;
const GLfloat *fog;
const GLfloat *pointSize;
GLuint tsz[MAX_TEXTURE_COORD_UNITS];
GLuint tstride[MAX_TEXTURE_COORD_UNITS];
GLuint ndc_stride, color_stride, spec_stride, index_stride;
GLuint fog_stride, pointSize_stride;
GLuint i;
GLfloat *m = ctx->Viewport._WindowMap.m;
const GLfloat sx = m[0];
const GLfloat sy = m[5];
const GLfloat sz = m[10];
const GLfloat tx = m[12];
const GLfloat ty = m[13];
const GLfloat tz = m[14];
GLuint maxtex = 0;
if (IND & TEX0) {
tc[0] = (GLfloat *)VB->TexCoordPtr[0]->data;
tsz[0] = VB->TexCoordPtr[0]->size;
tstride[0] = VB->TexCoordPtr[0]->stride;
}
if (IND & MULTITEX) {
for (i = 0 ; i < ctx->Const.MaxTextureUnits ; i++) {
if (VB->TexCoordPtr[i]) {
maxtex = i+1;
tc[i] = (GLfloat *)VB->TexCoordPtr[i]->data;
tsz[i] = VB->TexCoordPtr[i]->size;
tstride[i] = VB->TexCoordPtr[i]->stride;
}
else tc[i] = 0;
}
}
ndc = VB->NdcPtr->data[0];
ndc_stride = VB->NdcPtr->stride;
if (IND & FOG) {
fog = (GLfloat *) VB->FogCoordPtr->data;
fog_stride = VB->FogCoordPtr->stride;
}
if (IND & COLOR) {
color = (GLfloat *) VB->ColorPtr[0]->data;
color_stride = VB->ColorPtr[0]->stride;
}
if (IND & SPEC) {
spec = (GLfloat *) VB->SecondaryColorPtr[0]->data;
spec_stride = VB->SecondaryColorPtr[0]->stride;
}
if (IND & INDEX) {
index = (GLfloat *) VB->IndexPtr[0]->data;
index_stride = VB->IndexPtr[0]->stride;
}
if (IND & POINT) {
pointSize = (GLfloat *) VB->PointSizePtr->data;
pointSize_stride = VB->PointSizePtr->stride;
}
v = &(SWSETUP_CONTEXT(ctx)->verts[start]);
for (i=start; i < end; i++, v++) {
if (VB->ClipMask[i] == 0) {
v->win[0] = sx * ndc[0] + tx;
v->win[1] = sy * ndc[1] + ty;
v->win[2] = sz * ndc[2] + tz;
v->win[3] = ndc[3];
}
STRIDE_F(ndc, ndc_stride);
if (IND & TEX0) {
COPY_CLEAN_4V( v->texcoord[0], tsz[0], tc[0] );
STRIDE_F(tc[0], tstride[0]);
}
if (IND & MULTITEX) {
GLuint u;
for (u = 0 ; u < maxtex ; u++)
if (tc[u]) {
COPY_CLEAN_4V( v->texcoord[u], tsz[u], tc[u] );
STRIDE_F(tc[u], tstride[u]);
}
}
if (IND & COLOR) {
UNCLAMPED_FLOAT_TO_RGBA_CHAN(v->color, color);
STRIDE_F(color, color_stride);
}
if (IND & SPEC) {
UNCLAMPED_FLOAT_TO_RGBA_CHAN(v->specular, spec);
STRIDE_F(spec, spec_stride);
}
if (IND & FOG) {
v->fog = fog[0];
STRIDE_F(fog, fog_stride);
}
if (IND & INDEX) {
v->index = (GLuint) index[0];
STRIDE_F(index, index_stride);
}
if (IND & POINT) {
v->pointSize = pointSize[0];
STRIDE_F(pointSize, pointSize_stride);
}
}
}
static void TAG(interp)( GLcontext *ctx,
GLfloat t,
GLuint edst, GLuint eout, GLuint ein,
GLboolean force_boundary )
{
SScontext *swsetup = SWSETUP_CONTEXT(ctx);
struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
GLfloat *m = ctx->Viewport._WindowMap.m;
GLfloat *clip = VB->ClipPtr->data[edst];
SWvertex *dst = &swsetup->verts[edst];
SWvertex *in = &swsetup->verts[ein];
SWvertex *out = &swsetup->verts[eout];
/* Avoid division by zero by rearranging order of clip planes?
*/
if (clip[3] != 0.0) {
GLfloat oow = 1.0F / clip[3];
dst->win[0] = m[0] * clip[0] * oow + m[12];
dst->win[1] = m[5] * clip[1] * oow + m[13];
dst->win[2] = m[10] * clip[2] * oow + m[14];
dst->win[3] = oow;
}
if (IND & TEX0) {
INTERP_4F( t, dst->texcoord[0], out->texcoord[0], in->texcoord[0] );
}
if (IND & MULTITEX) {
GLuint u;
GLuint maxtex = ctx->Const.MaxTextureUnits;
for (u = 0 ; u < maxtex ; u++)
if (VB->TexCoordPtr[u]) {
INTERP_4F( t, dst->texcoord[u], out->texcoord[u], in->texcoord[u] );
}
}
if (IND & COLOR) {
INTERP_CHAN( t, dst->color[0], out->color[0], in->color[0] );
INTERP_CHAN( t, dst->color[1], out->color[1], in->color[1] );
INTERP_CHAN( t, dst->color[2], out->color[2], in->color[2] );
INTERP_CHAN( t, dst->color[3], out->color[3], in->color[3] );
}
if (IND & SPEC) {
INTERP_CHAN( t, dst->specular[0], out->specular[0], in->specular[0] );
INTERP_CHAN( t, dst->specular[1], out->specular[1], in->specular[1] );
INTERP_CHAN( t, dst->specular[2], out->specular[2], in->specular[2] );
}
if (IND & FOG) {
INTERP_F( t, dst->fog, out->fog, in->fog );
}
if (IND & INDEX) {
INTERP_UI( t, dst->index, out->index, in->index );
}
/* XXX Point size interpolation??? */
if (IND & POINT) {
INTERP_F( t, dst->pointSize, out->pointSize, in->pointSize );
}
}
static void TAG(copy_pv)( GLcontext *ctx, GLuint edst, GLuint esrc )
{
SScontext *swsetup = SWSETUP_CONTEXT(ctx);
SWvertex *dst = &swsetup->verts[edst];
SWvertex *src = &swsetup->verts[esrc];
if (IND & COLOR) {
COPY_CHAN4( dst->color, src->color );
}
if (IND & SPEC) {
COPY_3V( dst->specular, src->specular );
}
if (IND & INDEX) {
dst->index = src->index;
}
}
static void TAG(init)( void )
{
setup_tab[IND] = TAG(emit);
interp_tab[IND] = TAG(interp);
copy_pv_tab[IND] = TAG(copy_pv);
}
#undef TAG
#undef IND
#undef SETUP_FLAGS
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