[Mesa-dev] [PATCH 2/2] nv30/draw: switch varying hookup logic to know about texcoords

[Ilia Mirkin]

Commit 8acaf862dfe switched things over to use TEXCOORD instead of
GENERIC, but did not update the nv30 swtnl draw paths. This teaches the
draw logic about TEXCOORD.

Among other things, this fixes a crash in demos/arbocclude when using
swtnl. Curiously enough, the point-sprite piglit works without this.

Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
Cc: "10.5 10.6" <mesa-stable at lists.freedesktop.org>
---
 src/gallium/drivers/nouveau/nv30/nv30_draw.c | 25 ++++++++++++++++---------
 1 file changed, 16 insertions(+), 9 deletions(-)

diff --git a/src/gallium/drivers/nouveau/nv30/nv30_draw.c b/src/gallium/drivers/nouveau/nv30/nv30_draw.c
index a681135..03c0c70 100644
--- a/src/gallium/drivers/nouveau/nv30/nv30_draw.c
+++ b/src/gallium/drivers/nouveau/nv30/nv30_draw.c
@@ -230,22 +230,24 @@ static const struct {
    [TGSI_SEMANTIC_BCOLOR  ] = { EMIT_4F, INTERP_LINEAR     , 1, 3, 0x00000004 },
    [TGSI_SEMANTIC_FOG     ] = { EMIT_4F, INTERP_PERSPECTIVE, 5, 5, 0x00000010 },
    [TGSI_SEMANTIC_PSIZE   ] = { EMIT_1F_PSIZE, INTERP_POS  , 6, 6, 0x00000020 },
-   [TGSI_SEMANTIC_GENERIC ] = { EMIT_4F, INTERP_PERSPECTIVE, 8, 7, 0x00004000 }
+   [TGSI_SEMANTIC_TEXCOORD] = { EMIT_4F, INTERP_PERSPECTIVE, 8, 7, 0x00004000 },
 };
 
 static boolean
 vroute_add(struct nv30_render *r, uint attrib, uint sem, uint *idx)
 {
-   struct pipe_screen *pscreen = &r->nv30->screen->base.base;
+   struct nv30_screen *screen = r->nv30->screen;
    struct nv30_fragprog *fp = r->nv30->fragprog.program;
    struct vertex_info *vinfo = &r->vertex_info;
    enum pipe_format format;
    uint emit = EMIT_OMIT;
    uint result = *idx;
 
-   if (sem == TGSI_SEMANTIC_GENERIC && result >= 8) {
-      for (result = 0; result < 8; result++) {
-         if (fp->texcoord[result] == *idx) {
+   if (sem == TGSI_SEMANTIC_GENERIC) {
+      uint num_texcoords = (screen->eng3d->oclass < NV40_3D_CLASS) ? 8 : 10;
+      for (result = 0; result < num_texcoords; result++) {
+         if (fp->texcoord[result] == *idx + 8) {
+            sem = TGSI_SEMANTIC_TEXCOORD;
             emit = vroute[sem].emit;
             break;
          }
@@ -260,11 +262,11 @@ vroute_add(struct nv30_render *r, uint attrib, uint sem, uint *idx)
    draw_emit_vertex_attr(vinfo, emit, vroute[sem].interp, attrib);
    format = draw_translate_vinfo_format(emit);
 
-   r->vtxfmt[attrib] = nv30_vtxfmt(pscreen, format)->hw;
+   r->vtxfmt[attrib] = nv30_vtxfmt(&screen->base.base, format)->hw;
    r->vtxptr[attrib] = vinfo->size | NV30_3D_VTXBUF_DMA1;
    vinfo->size += draw_translate_vinfo_size(emit);
 
-   if (nv30_screen(pscreen)->eng3d->oclass < NV40_3D_CLASS) {
+   if (screen->eng3d->oclass < NV40_3D_CLASS) {
       r->vtxprog[attrib][0] = 0x001f38d8;
       r->vtxprog[attrib][1] = 0x0080001b | (attrib << 9);
       r->vtxprog[attrib][2] = 0x0836106c;
@@ -276,7 +278,12 @@ vroute_add(struct nv30_render *r, uint attrib, uint sem, uint *idx)
       r->vtxprog[attrib][3] = 0x6041ff80 | (result + vroute[sem].vp40) << 2;
    }
 
-   *idx = vroute[sem].ow40 << result;
+   if (result < 8)
+      *idx = vroute[sem].ow40 << result;
+   else {
+      assert(sem == TGSI_SEMANTIC_TEXCOORD);
+      *idx = 0x00001000 << (result - 8);
+   }
    return TRUE;
 }
 
@@ -330,7 +337,7 @@ nv30_render_validate(struct nv30_context *nv30)
 
    while (pntc && attrib < 16) {
       uint index = ffs(pntc) - 1; pntc &= ~(1 << index);
-      if (vroute_add(r, attrib, TGSI_SEMANTIC_GENERIC, &index)) {
+      if (vroute_add(r, attrib, TGSI_SEMANTIC_TEXCOORD, &index)) {
          vp_attribs |= (1 << attrib++);
          vp_results |= index;
       }
-- 
2.3.6