+static unsigned trim( unsigned count, unsigned first, unsigned incr )
+{
+ /*
+ * count either has been trimmed in draw_pt_arrays or is set to
+ * (driver)_fetch_max which is hopefully always larger than first.
+ */
+ assert(count >= first);
+ return count - (count - first) % incr;
+}
static void FUNC(struct draw_pt_front_end *frontend,
pt_elt_func get_elt,
const void *elts,
+ int elt_bias,
unsigned count)
{
struct varray_frontend *varray = (struct varray_frontend *)frontend;
- struct draw_context *draw = varray->draw;
- unsigned start = (unsigned)elts;
+ unsigned start = (unsigned) ((char *) elts - (char *) NULL);
- boolean flatfirst = (draw->rasterizer->flatshade &&
- draw->rasterizer->flatshade_first);
- unsigned i, j, flags;
+ unsigned j;
unsigned first, incr;
- varray->fetch_start = start;
+ assert(elt_bias == 0);
- split_prim_inplace(varray->input_prim, &first, &incr);
+ draw_pt_split_prim(varray->input_prim, &first, &incr);
+
+ /* Sanitize primitive length:
+ */
+ count = trim(count, first, incr);
+ if (count < first)
+ return;
#if 0
debug_printf("%s (%d) %d/%d\n", __FUNCTION__,
case PIPE_PRIM_POINTS:
case PIPE_PRIM_LINES:
case PIPE_PRIM_TRIANGLES:
- j = 0;
- while (j + first <= count) {
- unsigned end = MIN2(FETCH_MAX, count - j);
- end -= (end % incr);
- varray_flush_linear(varray, start + j, end);
- j += end;
+ case PIPE_PRIM_LINE_STRIP:
+ case PIPE_PRIM_TRIANGLE_STRIP:
+ case PIPE_PRIM_QUADS:
+ case PIPE_PRIM_QUAD_STRIP:
+ case PIPE_PRIM_LINES_ADJACENCY:
+ case PIPE_PRIM_LINE_STRIP_ADJACENCY:
+ case PIPE_PRIM_TRIANGLES_ADJACENCY:
+ case PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY:
+ for (j = 0; j < count;) {
+ unsigned remaining = count - j;
+ unsigned nr = trim( MIN2(varray->driver_fetch_max, remaining), first, incr );
+ varray_flush_linear(varray, start + j, nr);
+ j += nr;
+ if (nr != remaining)
+ j -= (first - incr);
}
break;
case PIPE_PRIM_LINE_LOOP:
- if (count >= 2) {
- flags = DRAW_PIPE_RESET_STIPPLE;
-
- for (j = 0; j + first <= count; j += i) {
- unsigned end = MIN2(FETCH_MAX, count - j);
- end -= (end % incr);
- for (i = 1; i < end; i++, flags = 0) {
- LINE(varray, flags, i - 1, i);
- }
- LINE(varray, flags, i - 1, 0);
- i = end;
- fetch_init(varray, end);
- varray_flush(varray);
- }
+ /* Always have to decompose as we've stated that this will be
+ * emitted as a line-strip.
+ */
+ for (j = 0; j < count;) {
+ unsigned remaining = count - j;
+ unsigned nr = trim( MIN2(varray->fetch_max-1, remaining), first, incr );
+ varray_line_loop_segment(varray, start, j, nr, nr == remaining);
+ j += nr;
+ if (nr != remaining)
+ j -= (first - incr);
}
break;
- case PIPE_PRIM_LINE_STRIP:
- flags = DRAW_PIPE_RESET_STIPPLE;
- for (j = 0; j + first <= count; j += i) {
- unsigned end = MIN2(FETCH_MAX, count - j);
- end -= (end % incr);
- for (i = 1; i < end; i++, flags = 0) {
- LINE(varray, flags, i - 1, i);
- }
- i = end;
- fetch_init(varray, end);
- varray_flush(varray);
- }
- break;
- case PIPE_PRIM_TRIANGLE_STRIP:
- if (flatfirst) {
- for (j = 0; j + first <= count; j += i) {
- unsigned end = MIN2(FETCH_MAX, count - j);
- end -= (end % incr);
- for (i = 0; i+2 < end; i++) {
- TRIANGLE(varray, DRAW_PIPE_RESET_STIPPLE | DRAW_PIPE_EDGE_FLAG_ALL,
- i + 0, i + 1 + (i&1), i + 2 - (i&1));
- }
- i = end;
- fetch_init(varray, end);
- varray_flush(varray);
- if (j + first + i <= count) {
- varray->fetch_start -= 2;
- i -= 2;
- }
- }
+ case PIPE_PRIM_POLYGON:
+ case PIPE_PRIM_TRIANGLE_FAN:
+ if (count < varray->driver_fetch_max) {
+ varray_flush_linear(varray, start, count);
}
else {
- for (j = 0; j + first <= count; j += i) {
- unsigned end = MIN2(FETCH_MAX, count - j);
- end -= (end % incr);
- for (i = 0; i+2 < end; i++) {
- TRIANGLE(varray, DRAW_PIPE_RESET_STIPPLE | DRAW_PIPE_EDGE_FLAG_ALL,
- i + 0 + (i&1), i + 1 - (i&1), i + 2);
- }
- i = end;
- fetch_init(varray, end);
- varray_flush(varray);
- if (j + first + i <= count) {
- varray->fetch_start -= 2;
- i -= 2;
- }
- }
- }
- break;
-
- case PIPE_PRIM_TRIANGLE_FAN:
- if (count >= 3) {
- if (flatfirst) {
- flags = DRAW_PIPE_RESET_STIPPLE | DRAW_PIPE_EDGE_FLAG_ALL;
- for (j = 0; j + first <= count; j += i) {
- unsigned end = MIN2(FETCH_MAX, count - j);
- end -= (end % incr);
- for (i = 0; i+2 < end; i++) {
- TRIANGLE(varray, flags, i + 1, i + 2, 0);
- }
- i = end;
- fetch_init(varray, end);
- varray_flush(varray);
- }
- }
- else {
- flags = DRAW_PIPE_RESET_STIPPLE | DRAW_PIPE_EDGE_FLAG_ALL;
- for (j = 0; j + first <= count; j += i) {
- unsigned end = MIN2(FETCH_MAX, count - j);
- end -= (end % incr);
- for (i = 0; i+2 < end; i++) {
- TRIANGLE(varray, flags, 0, i + 1, i + 2);
- }
- i = end;
- fetch_init(varray, end);
- varray_flush(varray);
- }
+ for ( j = 0; j < count;) {
+ unsigned remaining = count - j;
+ unsigned nr = trim( MIN2(varray->fetch_max-1, remaining), first, incr );
+ varray_fan_segment(varray, start, j, nr);
+ j += nr;
+ if (nr != remaining)
+ j -= (first - incr);
}
}
break;
- case PIPE_PRIM_QUADS:
- for (j = 0; j + first <= count; j += i) {
- unsigned end = MIN2(FETCH_MAX, count - j);
- end -= (end % incr);
- for (i = 0; i+3 < end; i += 4) {
- QUAD(varray, i + 0, i + 1, i + 2, i + 3);
- }
- i = end;
- fetch_init(varray, end);
- varray_flush(varray);
- }
- break;
-
- case PIPE_PRIM_QUAD_STRIP:
- for (j = 0; j + first <= count; j += i) {
- unsigned end = MIN2(FETCH_MAX, count - j);
- end -= (end % incr);
- for (i = 0; i+3 < end; i += 2) {
- QUAD(varray, i + 2, i + 0, i + 1, i + 3);
- }
- i = end;
- fetch_init(varray, end);
- varray_flush(varray);
- if (j + first + i <= count) {
- varray->fetch_start -= 2;
- i -= 2;
- }
- }
- break;
-
- case PIPE_PRIM_POLYGON:
- {
- /* These bitflags look a little odd because we submit the
- * vertices as (1,2,0) to satisfy flatshade requirements.
- */
- const unsigned edge_first = DRAW_PIPE_EDGE_FLAG_2;
- const unsigned edge_middle = DRAW_PIPE_EDGE_FLAG_0;
- const unsigned edge_last = DRAW_PIPE_EDGE_FLAG_1;
-
- flags = DRAW_PIPE_RESET_STIPPLE | edge_first | edge_middle;
- for (j = 0; j + first <= count; j += i) {
- unsigned end = MIN2(FETCH_MAX, count - j);
- end -= (end % incr);
- for (i = 0; i+2 < end; i++, flags = edge_middle) {
-
- if (i + 3 == count)
- flags |= edge_last;
-
- TRIANGLE(varray, flags, i + 1, i + 2, 0);
- }
- i = end;
- fetch_init(varray, end);
- varray_flush(varray);
- }
- }
- break;
-
default:
assert(0);
break;
}
-
- varray_flush(varray);
}
#undef TRIANGLE
projects / mesa.git / blobdiff