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Diffstat (limited to 'src/gallium/auxiliary/draw/draw_pt_vcache.c')
-rw-r--r--src/gallium/auxiliary/draw/draw_pt_vcache.c338
1 files changed, 338 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/draw/draw_pt_vcache.c b/src/gallium/auxiliary/draw/draw_pt_vcache.c
new file mode 100644
index 0000000000..07e9f0ae5f
--- /dev/null
+++ b/src/gallium/auxiliary/draw/draw_pt_vcache.c
@@ -0,0 +1,338 @@
+/**************************************************************************
+ *
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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, 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 ITS 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 <keith@tungstengraphics.com>
+ */
+
+#include "pipe/p_util.h"
+#include "draw/draw_context.h"
+#include "draw/draw_private.h"
+//#include "draw/draw_vbuf.h"
+//#include "draw/draw_vertex.h"
+#include "draw/draw_pt.h"
+
+
+#define CACHE_MAX 32
+#define FETCH_MAX 128
+#define DRAW_MAX (16*1024)
+
+struct vcache_frontend {
+ struct draw_pt_front_end base;
+
+ ushort in[CACHE_MAX];
+ ushort out[CACHE_MAX];
+
+ ushort draw_elts[DRAW_MAX];
+ unsigned fetch_elts[FETCH_MAX];
+
+ unsigned draw_count;
+ unsigned fetch_count;
+
+ pt_elt_func elt_func;
+ const void *elt_ptr;
+
+ struct draw_pt_middle_end *middle;
+ unsigned output_prim;
+};
+
+static void vcache_flush( struct vcache_frontend *vcache )
+{
+#if 0
+ /* Should always be true if output_prim == input_prim, otherwise
+ * not so much...
+ */
+ unsigned i;
+ for (i = 0; i < vcache->draw_count; i++) {
+ assert( vcache->fetch_elts[vcache->draw_elts[i]] ==
+ vcache->elt_func(vcache->elt_ptr, i) );
+ }
+#endif
+
+ if (vcache->draw_count)
+ vcache->middle->run( vcache->middle,
+ vcache->output_prim,
+ vcache->fetch_elts,
+ vcache->fetch_count,
+ vcache->draw_elts,
+ vcache->draw_count );
+
+ memset(vcache->in, ~0, sizeof(vcache->in));
+ vcache->fetch_count = 0;
+ vcache->draw_count = 0;
+}
+
+static void vcache_check_flush( struct vcache_frontend *vcache )
+{
+ if ( vcache->draw_count + 6 >= DRAW_MAX ||
+ vcache->fetch_count + 4 >= FETCH_MAX )
+ {
+ vcache_flush( vcache );
+ }
+}
+
+
+static void vcache_elt( struct vcache_frontend *vcache,
+ unsigned felt )
+{
+ // ushort felt = elt(draw, i);
+
+ ushort idx = felt % CACHE_MAX;
+
+ if (vcache->in[idx] != felt) {
+ assert(vcache->fetch_count < FETCH_MAX);
+
+ vcache->in[idx] = felt;
+ vcache->out[idx] = vcache->fetch_count;
+ vcache->fetch_elts[vcache->fetch_count++] = felt;
+ }
+
+ vcache->draw_elts[vcache->draw_count++] = vcache->out[idx];
+}
+
+static void vcache_triangle( struct vcache_frontend *vcache,
+ unsigned i0,
+ unsigned i1,
+ unsigned i2 )
+{
+ /* TODO: encode edgeflags in draw_elts */
+ vcache_elt(vcache, i0);
+ vcache_elt(vcache, i1);
+ vcache_elt(vcache, i2);
+ vcache_check_flush(vcache);
+}
+
+static void vcache_line( struct vcache_frontend *vcache,
+ boolean reset,
+ unsigned i0,
+ unsigned i1 )
+{
+ /* TODO: encode reset-line-stipple in draw_elts */
+ (void) reset;
+ vcache_elt(vcache, i0);
+ vcache_elt(vcache, i1);
+ vcache_check_flush(vcache);
+}
+
+
+static void vcache_point( struct vcache_frontend *vcache,
+ unsigned i0 )
+{
+ vcache_elt(vcache, i0);
+ vcache_check_flush(vcache);
+}
+
+static void vcache_quad( struct vcache_frontend *vcache,
+ unsigned i0,
+ unsigned i1,
+ unsigned i2,
+ unsigned i3 )
+{
+ vcache_triangle( vcache, i0, i1, i3 );
+ vcache_triangle( vcache, i1, i2, i3 );
+}
+
+
+static void vcache_prepare( struct draw_pt_front_end *frontend,
+ struct draw_pt_middle_end *middle )
+{
+ struct vcache_frontend *vcache = (struct vcache_frontend *)frontend;
+ vcache->middle = middle;
+ middle->prepare( middle );
+}
+
+static unsigned reduced_prim[PIPE_PRIM_POLYGON + 1] = {
+ PIPE_PRIM_POINTS,
+ PIPE_PRIM_LINES,
+ PIPE_PRIM_LINES,
+ PIPE_PRIM_LINES,
+ PIPE_PRIM_TRIANGLES,
+ PIPE_PRIM_TRIANGLES,
+ PIPE_PRIM_TRIANGLES,
+ PIPE_PRIM_TRIANGLES,
+ PIPE_PRIM_TRIANGLES,
+ PIPE_PRIM_TRIANGLES
+};
+
+
+static void vcache_run( struct draw_pt_front_end *frontend,
+ unsigned prim,
+ pt_elt_func get_elt,
+ const void *elts,
+ unsigned count )
+{
+ struct vcache_frontend *vcache = (struct vcache_frontend *)frontend;
+ unsigned i;
+
+ /* These are for validation only:
+ */
+ vcache->elt_func = get_elt;
+ vcache->elt_ptr = elts;
+ vcache->output_prim = reduced_prim[prim];
+
+ switch (prim) {
+ case PIPE_PRIM_POINTS:
+ for (i = 0; i < count; i ++) {
+ vcache_point( vcache,
+ get_elt(elts, i) );
+ }
+ break;
+
+ case PIPE_PRIM_LINES:
+ for (i = 0; i+1 < count; i += 2) {
+ vcache_line( vcache,
+ TRUE,
+ get_elt(elts, i + 0),
+ get_elt(elts, i + 1));
+ }
+ break;
+
+ case PIPE_PRIM_LINE_LOOP:
+ if (count >= 2) {
+ for (i = 1; i < count; i++) {
+ vcache_line( vcache,
+ i == 1, /* XXX: only if vb not split */
+ get_elt(elts, i - 1),
+ get_elt(elts, i) );
+ }
+
+ vcache_line( vcache,
+ 0,
+ get_elt(elts, count - 1),
+ get_elt(elts, 0) );
+ }
+ break;
+
+ case PIPE_PRIM_LINE_STRIP:
+ for (i = 1; i < count; i++) {
+ vcache_line( vcache,
+ i == 1,
+ get_elt(elts, i - 1),
+ get_elt(elts, i) );
+ }
+ break;
+
+ case PIPE_PRIM_TRIANGLES:
+ for (i = 0; i+2 < count; i += 3) {
+ vcache_triangle( vcache,
+ get_elt(elts, i + 0),
+ get_elt(elts, i + 1),
+ get_elt(elts, i + 2) );
+ }
+ break;
+
+ case PIPE_PRIM_TRIANGLE_STRIP:
+ for (i = 0; i+2 < count; i++) {
+ if (i & 1) {
+ vcache_triangle( vcache,
+ get_elt(elts, i + 1),
+ get_elt(elts, i + 0),
+ get_elt(elts, i + 2) );
+ }
+ else {
+ vcache_triangle( vcache,
+ get_elt(elts, i + 0),
+ get_elt(elts, i + 1),
+ get_elt(elts, i + 2) );
+ }
+ }
+ break;
+
+ case PIPE_PRIM_TRIANGLE_FAN:
+ for (i = 0; i+2 < count; i++) {
+ vcache_triangle( vcache,
+ get_elt(elts, 0),
+ get_elt(elts, i + 1),
+ get_elt(elts, i + 2) );
+ }
+ break;
+
+
+ case PIPE_PRIM_QUADS:
+ for (i = 0; i+3 < count; i += 4) {
+ vcache_quad( vcache,
+ get_elt(elts, i + 0),
+ get_elt(elts, i + 1),
+ get_elt(elts, i + 2),
+ get_elt(elts, i + 3));
+ }
+ break;
+
+ case PIPE_PRIM_QUAD_STRIP:
+ for (i = 0; i+3 < count; i += 2) {
+ vcache_quad( vcache,
+ get_elt(elts, i + 2),
+ get_elt(elts, i + 0),
+ get_elt(elts, i + 1),
+ get_elt(elts, i + 3));
+ }
+ break;
+
+ case PIPE_PRIM_POLYGON:
+ for (i = 0; i+2 < count; i++) {
+ vcache_triangle( vcache,
+ get_elt(elts, i + 1),
+ get_elt(elts, i + 2),
+ get_elt(elts, 0));
+ }
+ break;
+
+ default:
+ assert(0);
+ break;
+ }
+
+ vcache_flush( vcache );
+}
+
+static void vcache_finish( struct draw_pt_front_end *frontend )
+{
+ struct vcache_frontend *vcache = (struct vcache_frontend *)frontend;
+ vcache->middle->finish( vcache->middle );
+ vcache->middle = NULL;
+}
+
+static void vcache_destroy( struct draw_pt_front_end *frontend )
+{
+ FREE(frontend);
+}
+
+
+struct draw_pt_front_end *draw_pt_vcache( void )
+{
+ struct vcache_frontend *vcache = CALLOC_STRUCT( vcache_frontend );
+
+ vcache->base.prepare = vcache_prepare;
+ vcache->base.run = vcache_run;
+ vcache->base.finish = vcache_finish;
+ vcache->base.destroy = vcache_destroy;
+
+ memset(vcache->in, ~0, sizeof(vcache->in));
+
+ return &vcache->base;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-17 20:04:02 +0000