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draw: Take flatshade_first rasterizer bit into account.

This commit is contained in:
Michal Krol 2008-03-25 23:49:11 +01:00
parent dc9757e1a8
commit e1543fa55c
1 changed files with 117 additions and 45 deletions
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162
src/gallium/auxiliary/draw/draw_prim.c
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@ -330,6 +330,8 @@ draw_prim( struct draw_context *draw,
unsigned i;
boolean unfilled = (draw->rasterizer->fill_cw != PIPE_POLYGON_MODE_FILL ||
draw->rasterizer->fill_ccw != PIPE_POLYGON_MODE_FILL);
boolean flatfirst =
(draw->rasterizer->flatshade & draw->rasterizer->flatshade_first) ? TRUE : FALSE;
// debug_printf("%s (%d) %d/%d\n", __FUNCTION__, draw->prim, start, count );
@ -342,11 +344,21 @@ draw_prim( struct draw_context *draw,
break;
case PIPE_PRIM_LINES:
for (i = 0; i+1 < count; i += 2) {
do_line( draw,
TRUE,
start + i + 0,
start + i + 1);
if (flatfirst) {
for (i = 0; i+1 < count; i += 2) {
do_line( draw,
TRUE,
start + i + 1,
start + i + 0);
}
}
else {
for (i = 0; i+1 < count; i += 2) {
do_line( draw,
TRUE,
start + i + 0,
start + i + 1);
}
}
break;
@ -367,60 +379,120 @@ draw_prim( struct draw_context *draw,
break;
case PIPE_PRIM_LINE_STRIP:
for (i = 1; i < count; i++) {
do_line( draw,
i == 1,
start + i - 1,
start + i );
if (flatfirst) {
for (i = 1; i < count; i++) {
do_line( draw,
i == 1,
start + i,
start + i - 1 );
}
}
else {
for (i = 1; i < count; i++) {
do_line( draw,
i == 1,
start + i - 1,
start + i );
}
}
break;
case PIPE_PRIM_TRIANGLES:
if (unfilled) {
for (i = 0; i+2 < count; i += 3) {
do_ef_triangle( draw,
1,
~0,
start + i + 0,
start + i + 1,
start + i + 2 );
}
}
if (flatfirst) {
if (unfilled) {
for (i = 0; i+2 < count; i += 3) {
do_ef_triangle( draw,
1,
~0,
start + i + 1,
start + i + 2,
start + i + 0 );
}
}
else {
for (i = 0; i+2 < count; i += 3) {
do_triangle( draw,
start + i + 1,
start + i + 2,
start + i + 0 );
}
}
}
else {
for (i = 0; i+2 < count; i += 3) {
do_triangle( draw,
start + i + 0,
start + i + 1,
start + i + 2 );
}
if (unfilled) {
for (i = 0; i+2 < count; i += 3) {
do_ef_triangle( draw,
1,
~0,
start + i + 0,
start + i + 1,
start + i + 2 );
}
}
else {
for (i = 0; i+2 < count; i += 3) {
do_triangle( draw,
start + i + 0,
start + i + 1,
start + i + 2 );
}
}
}
break;
case PIPE_PRIM_TRIANGLE_STRIP:
for (i = 0; i+2 < count; i++) {
if (i & 1) {
do_triangle( draw,
start + i + 1,
start + i + 0,
start + i + 2 );
}
else {
do_triangle( draw,
start + i + 0,
start + i + 1,
start + i + 2 );
}
if (flatfirst) {
for (i = 0; i+2 < count; i++) {
if (i & 1) {
do_triangle( draw,
start + i + 2,
start + i + 1,
start + i + 0 );
}
else {
do_triangle( draw,
start + i + 1,
start + i + 2,
start + i + 0 );
}
}
}
else {
for (i = 0; i+2 < count; i++) {
if (i & 1) {
do_triangle( draw,
start + i + 1,
start + i + 0,
start + i + 2 );
}
else {
do_triangle( draw,
start + i + 0,
start + i + 1,
start + i + 2 );
}
}
}
break;
case PIPE_PRIM_TRIANGLE_FAN:
if (count >= 3) {
for (i = 0; i+2 < count; i++) {
do_triangle( draw,
start + 0,
start + i + 1,
start + i + 2 );
}
if (flatfirst) {
for (i = 0; i+2 < count; i++) {
do_triangle( draw,
start + i + 2,
start + 0,
start + i + 1 );
}
}
else {
for (i = 0; i+2 < count; i++) {
do_triangle( draw,
start + 0,
start + i + 1,
start + i + 2 );
}
}
}
break;