/*
* Copyright 2003 Tungsten Graphics, inc.
* 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
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, 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 (including the next
* paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
* TUNGSTEN GRAPHICS AND/OR THEIR SUPPLIERS 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 <keithw@tungstengraphics.com>
*/
#include "glheader.h"
#include "context.h"
#include "colormac.h"
#include "t_context.h"
#include "t_vertex.h"
/* Build and manage clipspace/ndc/window vertices.
*
* Another new mechanism designed and crying out for codegen. Before
* that, it would be very interesting to investigate the merger of
* these vertices and those built in t_vtx_*.
*/
#define GET_VERTEX_STATE(ctx) &(TNL_CONTEXT(ctx)->clipspace)
static void insert_4f_viewport_4( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
GLfloat *out = (GLfloat *)v;
const GLfloat * const vp = a->vp;
out[0] = vp[0] * in[0] + vp[12];
out[1] = vp[5] * in[1] + vp[13];
out[2] = vp[10] * in[2] + vp[14];
out[3] = in[3];
}
static void insert_4f_viewport_3( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
GLfloat *out = (GLfloat *)v;
const GLfloat * const vp = a->vp;
out[0] = vp[0] * in[0] + vp[12];
out[1] = vp[5] * in[1] + vp[13];
out[2] = vp[10] * in[2] + vp[14];
out[3] = 1;
}
static void insert_4f_viewport_2( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
GLfloat *out = (GLfloat *)v;
const GLfloat * const vp = a->vp;
out[0] = vp[0] * in[0] + vp[12];
out[1] = vp[5] * in[1] + vp[13];
out[2] = vp[14];
out[3] = 1;
}
static void insert_4f_viewport_1( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
GLfloat *out = (GLfloat *)v;
const GLfloat * const vp = a->vp;
out[0] = vp[0] * in[0] + vp[12];
out[1] = vp[13];
out[2] = vp[14];
out[3] = 1;
}
static void insert_3f_viewport_3( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
GLfloat *out = (GLfloat *)v;
const GLfloat * const vp = a->vp;
out[0] = vp[0] * in[0] + vp[12];
out[1] = vp[5] * in[1] + vp[13];
out[2] = vp[10] * in[2] + vp[14];
}
static void insert_3f_viewport_2( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
GLfloat *out = (GLfloat *)v;
const GLfloat * const vp = a->vp;
out[0] = vp[0] * in[0] + vp[12];
out[1] = vp[5] * in[1] + vp[13];
out[2] = vp[10] * in[2] + vp[14];
}
static void insert_3f_viewport_1( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
GLfloat *out = (GLfloat *)v;
const GLfloat * const vp = a->vp;
out[0] = vp[0] * in[0] + vp[12];
out[1] = vp[13];
out[2] = vp[14];
}
static void insert_2f_viewport_2( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
GLfloat *out = (GLfloat *)v;
const GLfloat * const vp = a->vp;
out[0] = vp[0] * in[0] + vp[12];
out[1] = vp[5] * in[1] + vp[13];
}
static void insert_2f_viewport_1( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
GLfloat *out = (GLfloat *)v;
const GLfloat * const vp = a->vp;
out[0] = vp[0] * in[0] + vp[12];
out[1] = vp[13];
}
static void insert_4f_4( const struct tnl_clipspace_attr *a, GLubyte *v, const GLfloat *in )
{
GLfloat *out = (GLfloat *)(v);
out[0] = in[0];
out[1] = in[1];
out[2] = in[2];
out[3] = in[3];
}
static void insert_4f_3( const struct tnl_clipspace_attr *a, GLubyte *v, const GLfloat *in )
{
GLfloat *out = (GLfloat *)(v);
out[0] = in[0];
out[1] = in[1];
out[2] = in[2];
out[3] = 1;
}
static void insert_4f_2( const struct tnl_clipspace_attr *a, GLubyte *v, const GLfloat *in )
{
GLfloat *out = (GLfloat *)(v);
out[0] = in[0];
out[1] = in[1];
out[2] = 0;
out[3] = 1;
}
static void insert_4f_1( const struct tnl_clipspace_attr *a, GLubyte *v, const GLfloat *in )
{
GLfloat *out = (GLfloat *)(v);
out[0] = in[0];
out[1] = 0;
out[2] = 0;
out[3] = 1;
}
static void insert_3f_xyw_4( const struct tnl_clipspace_attr *a, GLubyte *v, const GLfloat *in )
{
GLfloat *out = (GLfloat *)(v);
out[0] = in[0];
out[1] = in[1];
out[2] = in[3];
}
static void insert_3f_xyw_err( const struct tnl_clipspace_attr *a, GLubyte *v, const GLfloat *in )
{
abort();
}
static void insert_3f_3( const struct tnl_clipspace_attr *a, GLubyte *v, const GLfloat *in )
{
GLfloat *out = (GLfloat *)(v);
out[0] = in[0];
out[1] = in[1];
out[2] = in[2];
}
static void insert_3f_2( const struct tnl_clipspace_attr *a, GLubyte *v, const GLfloat *in )
{
GLfloat *out = (GLfloat *)(v);
out[0] = in[0];
out[1] = in[1];
out[2] = 0;
}
static void insert_3f_1( const struct tnl_clipspace_attr *a, GLubyte *v, const GLfloat *in )
{
GLfloat *out = (GLfloat *)(v);
out[0] = in[0];
out[1] = 0;
out[2] = 0;
}
static void insert_2f_2( const struct tnl_clipspace_attr *a, GLubyte *v, const GLfloat *in )
{
GLfloat *out = (GLfloat *)(v);
out[0] = in[0];
out[1] = in[1];
}
static void insert_2f_1( const struct tnl_clipspace_attr *a, GLubyte *v, const GLfloat *in )
{
GLfloat *out = (GLfloat *)(v);
out[0] = in[0];
out[1] = 0;
}
static void insert_1f_1( const struct tnl_clipspace_attr *a, GLubyte *v, const GLfloat *in )
{
GLfloat *out = (GLfloat *)(v);
out[0] = in[0];
}
static void insert_4chan_4f_rgba_4( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
GLchan *c = (GLchan *)v;
UNCLAMPED_FLOAT_TO_CHAN(c[0], in[0]);
UNCLAMPED_FLOAT_TO_CHAN(c[1], in[1]);
UNCLAMPED_FLOAT_TO_CHAN(c[2], in[2]);
UNCLAMPED_FLOAT_TO_CHAN(c[3], in[3]);
}
static void insert_4chan_4f_rgba_3( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
GLchan *c = (GLchan *)v;
UNCLAMPED_FLOAT_TO_CHAN(c[0], in[0]);
UNCLAMPED_FLOAT_TO_CHAN(c[1], in[1]);
UNCLAMPED_FLOAT_TO_CHAN(c[2], in[2]);
c[3] = CHAN_MAX;
}
static void insert_4chan_4f_rgba_2( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
GLchan *c = (GLchan *)v;
UNCLAMPED_FLOAT_TO_CHAN(c[0], in[0]);
UNCLAMPED_FLOAT_TO_CHAN(c[1], in[1]);
c[2] = 0;
c[3] = CHAN_MAX;
}
static void insert_4chan_4f_rgba_1( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
GLchan *c = (GLchan *)v;
UNCLAMPED_FLOAT_TO_CHAN(c[0], in[0]);
c[1] = 0;
c[2] = 0;
c[3] = CHAN_MAX;
}
static void insert_4ub_4f_rgba_4( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
UNCLAMPED_FLOAT_TO_UBYTE(v[0], in[0]);
UNCLAMPED_FLOAT_TO_UBYTE(v[1], in[1]);
UNCLAMPED_FLOAT_TO_UBYTE(v[2], in[2]);
UNCLAMPED_FLOAT_TO_UBYTE(v[3], in[3]);
}
static void insert_4ub_4f_rgba_3( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
UNCLAMPED_FLOAT_TO_UBYTE(v[0], in[0]);
UNCLAMPED_FLOAT_TO_UBYTE(v[1], in[1]);
UNCLAMPED_FLOAT_TO_UBYTE(v[2], in[2]);
v[3] = 0xff;
}
static void insert_4ub_4f_rgba_2( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
UNCLAMPED_FLOAT_TO_UBYTE(v[0], in[0]);
UNCLAMPED_FLOAT_TO_UBYTE(v[1], in[1]);
v[2] = 0;
v[3] = 0xff;
}
static void insert_4ub_4f_rgba_1( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
UNCLAMPED_FLOAT_TO_UBYTE(v[0], in[0]);
v[1] = 0;
v[2] = 0;
v[3] = 0xff;
}
static void insert_4ub_4f_bgra_4( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
UNCLAMPED_FLOAT_TO_UBYTE(v[2], in[0]);
UNCLAMPED_FLOAT_TO_UBYTE(v[1], in[1]);
UNCLAMPED_FLOAT_TO_UBYTE(v[0], in[2]);
UNCLAMPED_FLOAT_TO_UBYTE(v[3], in[3]);
}
static void insert_4ub_4f_bgra_3( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
UNCLAMPED_FLOAT_TO_UBYTE(v[2], in[0]);
UNCLAMPED_FLOAT_TO_UBYTE(v[1], in[1]);
UNCLAMPED_FLOAT_TO_UBYTE(v[0], in[2]);
v[3] = 0xff;
}
static void insert_4ub_4f_bgra_2( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
UNCLAMPED_FLOAT_TO_UBYTE(v[2], in[0]);
UNCLAMPED_FLOAT_TO_UBYTE(v[1], in[1]);
v[0] = 0;
v[3] = 0xff;
}
static void insert_4ub_4f_bgra_1( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
UNCLAMPED_FLOAT_TO_UBYTE(v[2], in[0]);
v[1] = 0;
v[0] = 0;
v[3] = 0xff;
}
static void insert_3ub_3f_rgb_3( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
UNCLAMPED_FLOAT_TO_UBYTE(v[0], in[0]);
UNCLAMPED_FLOAT_TO_UBYTE(v[1], in[1]);
UNCLAMPED_FLOAT_TO_UBYTE(v[2], in[2]);
}
static void insert_3ub_3f_rgb_2( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
UNCLAMPED_FLOAT_TO_UBYTE(v[0], in[0]);
UNCLAMPED_FLOAT_TO_UBYTE(v[1], in[1]);
v[2] = 0;
}
static void insert_3ub_3f_rgb_1( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
UNCLAMPED_FLOAT_TO_UBYTE(v[0], in[0]);
v[1] = 0;
v[2] = 0;
}
static void insert_3ub_3f_bgr_3( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
UNCLAMPED_FLOAT_TO_UBYTE(v[2], in[0]);
UNCLAMPED_FLOAT_TO_UBYTE(v[1], in[1]);
UNCLAMPED_FLOAT_TO_UBYTE(v[0], in[2]);
}
static void insert_3ub_3f_bgr_2( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
UNCLAMPED_FLOAT_TO_UBYTE(v[2], in[0]);
UNCLAMPED_FLOAT_TO_UBYTE(v[1], in[1]);
v[0] = 0;
}
static void insert_3ub_3f_bgr_1( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
UNCLAMPED_FLOAT_TO_UBYTE(v[2], in[0]);
v[1] = 0;
v[0] = 0;
}
static void insert_1ub_1f_1( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in )
{
UNCLAMPED_FLOAT_TO_UBYTE(v[0], in[0]);
}
/***********************************************************************
* Functions to perform the reverse operations to the above, for
* swrast translation and clip-interpolation.
*
* Currently always extracts a full 4 floats.
*/
static void extract_4f_viewport( const struct tnl_clipspace_attr *a, GLfloat *out,
const GLubyte *v )
{
const GLfloat *in = (const GLfloat *)v;
const GLfloat * const vp = a->vp;
/* Although included for completeness, the position coordinate is
* usually handled differently during clipping.
*/
out[0] = (in[0] - vp[12]) / vp[0];
out[1] = (in[1] - vp[13]) / vp[5];
out[2] = (in[2] - vp[14]) / vp[10];
out[3] = in[3];
}
static void extract_3f_viewport( const struct tnl_clipspace_attr *a, GLfloat *out,
const GLubyte *v )
{
const GLfloat *in = (const GLfloat *)v;
const GLfloat * const vp = a->vp;
out[0] = (in[0] - vp[12]) / vp[0];
out[1] = (in[1] - vp[13]) / vp[5];
out[2] = (in[2] - vp[14]) / vp[10];
out[3] = 1;
}
static void extract_2f_viewport( const struct tnl_clipspace_attr *a, GLfloat *out,
const GLubyte *v )
{
const GLfloat *in = (const GLfloat *)v;
const GLfloat * const vp = a->vp;
out[0] = (in[0] - vp[12]) / vp[0];
out[1] = (in[1] - vp[13]) / vp[5];
out[2] = 0;
out[3] = 1;
}
static void extract_4f( const struct tnl_clipspace_attr *a, GLfloat *out, const GLubyte *v )
{
const GLfloat *in = (const GLfloat *)v;
out[0] = in[0];
out[1] = in[1];
out[2] = in[2];
out[3] = in[3];
}
static void extract_3f_xyw( const struct tnl_clipspace_attr *a, GLfloat *out, const GLubyte *v )
{
const GLfloat *in = (const GLfloat *)v;
out[0] = in[0];
out[1] = in[1];
out[2] = in[3];
out[3] = 1;
}
static void extract_3f( const struct tnl_clipspace_attr *a, GLfloat *out, const GLubyte *v )
{
const GLfloat *in = (const GLfloat *)v;
out[0] = in[0];
out[1] = in[1];
out[2] = in[2];
out[3] = 1;
}
static void extract_2f( const struct tnl_clipspace_attr *a, GLfloat *out, const GLubyte *v )
{
const GLfloat *in = (const GLfloat *)v;
out[0] = in[0];
out[1] = in[1];
out[2] = 0;
out[3] = 1;
}
static void extract_1f( const struct tnl_clipspace_attr *a, GLfloat *out, const GLubyte *v )
{
const GLfloat *in = (const GLfloat *)v;
out[0] = in[0];
out[1] = 0;
out[2] = 0;
out[3] = 1;
}
static void extract_4chan_4f_rgba( const struct tnl_clipspace_attr *a, GLfloat *out,
const GLubyte *v )
{
GLchan *c = (GLchan *)v;
out[0] = CHAN_TO_FLOAT(c[0]);
out[1] = CHAN_TO_FLOAT(c[1]);
out[2] = CHAN_TO_FLOAT(c[2]);
out[3] = CHAN_TO_FLOAT(c[3]);
}
static void extract_4ub_4f_rgba( const struct tnl_clipspace_attr *a, GLfloat *out,
const GLubyte *v )
{
out[0] = UBYTE_TO_FLOAT(v[0]);
out[1] = UBYTE_TO_FLOAT(v[1]);
out[2] = UBYTE_TO_FLOAT(v[2]);
out[3] = UBYTE_TO_FLOAT(v[3]);
}
static void extract_4ub_4f_bgra( const struct tnl_clipspace_attr *a, GLfloat *out,
const GLubyte *v )
{
out[2] = UBYTE_TO_FLOAT(v[0]);
out[1] = UBYTE_TO_FLOAT(v[1]);
out[0] = UBYTE_TO_FLOAT(v[2]);
out[3] = UBYTE_TO_FLOAT(v[3]);
}
static void extract_3ub_3f_rgb( const struct tnl_clipspace_attr *a, GLfloat *out,
const GLubyte *v )
{
out[0] = UBYTE_TO_FLOAT(v[0]);
out[1] = UBYTE_TO_FLOAT(v[1]);
out[2] = UBYTE_TO_FLOAT(v[2]);
out[3] = 1;
}
static void extract_3ub_3f_bgr( const struct tnl_clipspace_attr *a, GLfloat *out,
const GLubyte *v )
{
out[2] = UBYTE_TO_FLOAT(v[0]);
out[1] = UBYTE_TO_FLOAT(v[1]);
out[0] = UBYTE_TO_FLOAT(v[2]);
out[3] = 1;
}
static void extract_1ub_1f( const struct tnl_clipspace_attr *a, GLfloat *out, const GLubyte *v )
{
out[0] = UBYTE_TO_FLOAT(v[0]);
out[1] = 0;
out[2] = 0;
out[3] = 1;
}
struct {
const char *name;
extract_func extract;
insert_func insert[4];
GLuint attrsize;
} format_info[EMIT_MAX] = {
{ "1f",
extract_1f,
{ insert_1f_1, insert_1f_1, insert_1f_1, insert_1f_1 },
sizeof(GLfloat) },
{ "2f",
extract_2f,
{ insert_2f_1, insert_2f_2, insert_2f_2, insert_2f_2 },
2 * sizeof(GLfloat) },
{ "3f",
extract_3f,
{ insert_3f_1, insert_3f_2, insert_3f_3, insert_3f_3 },
3 * sizeof(GLfloat) },
{ "4f",
extract_4f,
{ insert_4f_1, insert_4f_2, insert_4f_3, insert_4f_4 },
4 * sizeof(GLfloat) },
{ "2f_viewport",
extract_2f_viewport,
{ insert_2f_viewport_1, insert_2f_viewport_2, insert_2f_viewport_2,
insert_2f_viewport_2 },
2 * sizeof(GLfloat) },
{ "3f_viewport",
extract_3f_viewport,
{ insert_3f_viewport_1, insert_3f_viewport_2, insert_3f_viewport_3,
insert_3f_viewport_3 },
3 * sizeof(GLfloat) },
{ "4f_viewport",
extract_4f_viewport,
{ insert_4f_viewport_1, insert_4f_viewport_2, insert_4f_viewport_3,
insert_4f_viewport_4 },
4 * sizeof(GLfloat) },
{ "3f_xyw",
extract_3f_xyw,
{ insert_3f_xyw_err, insert_3f_xyw_err, insert_3f_xyw_err,
insert_3f_xyw_4 },
3 * sizeof(GLfloat) },
{ "1ub_1f",
extract_1ub_1f,
{ insert_1ub_1f_1, insert_1ub_1f_1, insert_1ub_1f_1, insert_1ub_1f_1 },
sizeof(GLubyte) },
{ "3ub_3f_rgb",
extract_3ub_3f_rgb,
{ insert_3ub_3f_rgb_1, insert_3ub_3f_rgb_2, insert_3ub_3f_rgb_3,
insert_3ub_3f_rgb_3 },
3 * sizeof(GLubyte) },
{ "3ub_3f_bgr",
extract_3ub_3f_bgr,
{ insert_3ub_3f_bgr_1, insert_3ub_3f_bgr_2, insert_3ub_3f_bgr_3,
insert_3ub_3f_bgr_3 },
3 * sizeof(GLubyte) },
{ "4ub_4f_rgba",
extract_4ub_4f_rgba,
{ insert_4ub_4f_rgba_1, insert_4ub_4f_rgba_2, insert_4ub_4f_rgba_3,
insert_4ub_4f_rgba_4 },
4 * sizeof(GLubyte) },
{ "4ub_4f_bgra",
extract_4ub_4f_bgra,
{ insert_4ub_4f_bgra_1, insert_4ub_4f_bgra_2, insert_4ub_4f_bgra_3,
insert_4ub_4f_bgra_4 },
4 * sizeof(GLubyte) },
{ "4chan_4f_rgba",
extract_4chan_4f_rgba,
{ insert_4chan_4f_rgba_1, insert_4chan_4f_rgba_2, insert_4chan_4f_rgba_3,
insert_4chan_4f_rgba_4 },
4 * sizeof(GLchan) },
{ "pad",
0,
{ 0, 0, 0, 0 },
0 }
};
/***********************************************************************
* Generic (non-codegen) functions for whole vertices or groups of
* vertices
*/
static void generic_emit( GLcontext *ctx,
GLuint start, GLuint end,
void *dest )
{
struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
struct tnl_clipspace_attr *a = vtx->attr;
GLubyte *v = (GLubyte *)dest;
GLuint i, j;
GLuint count = vtx->attr_count;
GLuint stride;
for (j = 0; j < count; j++) {
GLvector4f *vptr = VB->AttribPtr[a[j].attrib];
a[j].inputstride = vptr->stride;
a[j].inputptr = ((GLubyte *)vptr->data) + start * vptr->stride;
a[j].emit = a[j].insert[vptr->size - 1];
}
end -= start;
stride = vtx->vertex_size;
for (i = 0 ; i < end ; i++, v += stride) {
for (j = 0; j < count; j++) {
GLfloat *in = (GLfloat *)a[j].inputptr;
a[j].inputptr += a[j].inputstride;
a[j].emit( &a[j], v + a[j].vertoffset, in );
}
}
}
static void generic_interp( GLcontext *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);
GLubyte *vin = vtx->vertex_buf + ein * vtx->vertex_size;
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;
int attr_count = vtx->attr_count;
int j;
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_F( t, fdst[3], fout[3], fin[3] );
INTERP_F( t, fdst[2], fout[2], fin[2] );
INTERP_F( t, fdst[1], fout[1], fin[1] );
INTERP_F( t, fdst[0], fout[0], fin[0] );
a[j].insert[4-1]( &a[j], vdst + a[j].vertoffset, fdst );
}
}
/* Extract color attributes from one vertex and insert them into
* another. (Shortcircuit extract/insert with memcpy).
*/
static void generic_copy_pv( GLcontext *ctx, GLuint edst, GLuint esrc )
{
struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
GLubyte *vsrc = vtx->vertex_buf + esrc * vtx->vertex_size;
GLubyte *vdst = vtx->vertex_buf + edst * vtx->vertex_size;
const struct tnl_clipspace_attr *a = vtx->attr;
int attr_count = vtx->attr_count;
int j;
for (j = 0; j < attr_count; j++) {
if (a[j].attrib == VERT_ATTRIB_COLOR0 ||
a[j].attrib == VERT_ATTRIB_COLOR1) {
_mesa_memcpy( vdst + a[j].vertoffset,
vsrc + a[j].vertoffset,
a[j].vertattrsize );
}
}
}
/* 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);
}
static void generic_copy_pv_extras( GLcontext *ctx,
GLuint dst, GLuint src )
{
struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
if (VB->ColorPtr[1]) {
COPY_4FV( VB->ColorPtr[1]->data[dst],
VB->ColorPtr[1]->data[src] );
if (VB->SecondaryColorPtr[1]) {
COPY_4FV( VB->SecondaryColorPtr[1]->data[dst],
VB->SecondaryColorPtr[1]->data[src] );
}
}
else if (VB->IndexPtr[1]) {
VB->IndexPtr[1]->data[dst][0] = VB->IndexPtr[1]->data[src][0];
}
generic_copy_pv(ctx, dst, src);
}
/***********************************************************************
* Build codegen functions or return generic ones:
*/
static void choose_emit_func( GLcontext *ctx,
GLuint start, GLuint end,
void *dest )
{
struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
vtx->emit = generic_emit;
vtx->emit( ctx, start, end, dest );
}
static void choose_interp_func( GLcontext *ctx,
GLfloat t,
GLuint edst, GLuint eout, GLuint ein,
GLboolean force_boundary )
{
struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
if (vtx->need_extras &&
(ctx->_TriangleCaps & (DD_TRI_LIGHT_TWOSIDE|DD_TRI_UNFILLED))) {
vtx->interp = generic_interp_extras;
} else {
vtx->interp = generic_interp;
}
vtx->interp( ctx, t, edst, eout, ein, force_boundary );
}
static void choose_copy_pv_func( GLcontext *ctx, GLuint edst, GLuint esrc )
{
struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
if (vtx->need_extras &&
(ctx->_TriangleCaps & (DD_TRI_LIGHT_TWOSIDE|DD_TRI_UNFILLED))) {
vtx->copy_pv = generic_copy_pv_extras;
} else {
vtx->copy_pv = generic_copy_pv;
}
vtx->copy_pv( ctx, edst, esrc );
}
/***********************************************************************
* Public entrypoints, mostly dispatch to the above:
*/
/* Interpolate between two vertices to produce a third:
*/
void _tnl_interp( GLcontext *ctx,
GLfloat t,
GLuint edst, GLuint eout, GLuint ein,
GLboolean force_boundary )
{
struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
vtx->interp( ctx, t, edst, eout, ein, force_boundary );
}
/* Copy colors from one vertex to another:
*/
void _tnl_copy_pv( GLcontext *ctx, GLuint edst, GLuint esrc )
{
struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
vtx->copy_pv( ctx, edst, esrc );
}
/* Extract a named attribute from a hardware vertex. Will have to
* reverse any viewport transformation, swizzling or other conversions
* which may have been applied:
*/
void _tnl_get_attr( GLcontext *ctx, const void *vin,
GLenum attr, GLfloat *dest )
{
struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
const struct tnl_clipspace_attr *a = vtx->attr;
int attr_count = vtx->attr_count;
int j;
for (j = 0; j < attr_count; j++) {
if (a[j].attrib == (int)attr) {
a[j].extract( &a[j], dest, (GLubyte *)vin + a[j].vertoffset );
return;
}
}
/* Else return the value from ctx->Current
*/
_mesa_memcpy( dest, ctx->Current.Attrib[attr], 4*sizeof(GLfloat));
}
void *_tnl_get_vertex( GLcontext *ctx, GLuint nr )
{
struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
return vtx->vertex_buf + nr * vtx->vertex_size;
}
void _tnl_invalidate_vertex_state( GLcontext *ctx, GLuint new_state )
{
if (new_state & (_DD_NEW_TRI_LIGHT_TWOSIDE|_DD_NEW_TRI_UNFILLED) ) {
struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
vtx->new_inputs = ~0;
vtx->interp = choose_interp_func;
vtx->copy_pv = choose_copy_pv_func;
}
}
GLuint _tnl_install_attrs( GLcontext *ctx, const struct tnl_attr_map *map,
GLuint nr, const GLfloat *vp,
GLuint unpacked_size )
{
struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
int offset = 0;
GLuint i, j;
assert(nr < _TNL_ATTRIB_MAX);
assert(nr == 0 || map[0].attrib == VERT_ATTRIB_POS);
vtx->emit = choose_emit_func;
vtx->interp = choose_interp_func;
vtx->copy_pv = choose_copy_pv_func;
vtx->new_inputs = ~0;
for (j = 0, i = 0; i < nr; i++) {
GLuint format = map[i].format;
if (format == EMIT_PAD) {
offset += map[i].offset;
/* fprintf(stderr, "%d: pad %d, offset now %d\n", i, */
/* map[i].offset, offset); */
}
else {
vtx->attr[j].attrib = map[i].attrib;
vtx->attr[j].vp = vp;
vtx->attr[j].insert = format_info[format].insert;
vtx->attr[j].extract = format_info[format].extract;
vtx->attr[j].vertattrsize = format_info[format].attrsize;
if (unpacked_size)
vtx->attr[j].vertoffset = map[i].offset;
else
vtx->attr[j].vertoffset = offset;
/* fprintf(stderr, "%d: %s offset %d\n", i, */
/* format_info[format].name, vtx->attr[j].vertoffset); */
offset += format_info[format].attrsize;
j++;
}
}
vtx->attr_count = j;
if (unpacked_size)
vtx->vertex_size = unpacked_size;
else
vtx->vertex_size = offset;
assert(vtx->vertex_size <= vtx->max_vertex_size);
return vtx->vertex_size;
}
void _tnl_invalidate_vertices( GLcontext *ctx, GLuint newinputs )
{
struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
vtx->new_inputs |= newinputs;
}
void _tnl_build_vertices( GLcontext *ctx,
GLuint start,
GLuint end,
GLuint newinputs )
{
struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
GLuint stride = vtx->vertex_size;
GLubyte *v = ((GLubyte *)vtx->vertex_buf + (start*stride));
newinputs |= vtx->new_inputs;
vtx->new_inputs = 0;
if (newinputs)
vtx->emit( ctx, start, end, v );
}
void *_tnl_emit_vertices_to_buffer( GLcontext *ctx,
GLuint start,
GLuint end,
void *dest )
{
struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
vtx->emit( ctx, start, end, dest );
return (void *)((GLubyte *)dest + vtx->vertex_size * (end - start));
}
void _tnl_init_vertices( GLcontext *ctx,
GLuint vb_size,
GLuint max_vertex_size )
{
struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
_tnl_install_attrs( ctx, 0, 0, 0, 0 );
vtx->need_extras = GL_TRUE;
if (max_vertex_size > vtx->max_vertex_size) {
_tnl_free_vertices( ctx );
vtx->max_vertex_size = max_vertex_size;
vtx->vertex_buf = (GLubyte *)ALIGN_CALLOC(vb_size * max_vertex_size, 32 );
}
}
void _tnl_free_vertices( GLcontext *ctx )
{
struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
if (vtx->vertex_buf) {
ALIGN_FREE(vtx->vertex_buf);
vtx->vertex_buf = 0;
}
}