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authorAlan Hourihane <alanh@tungstengraphics.com>2001-04-07 16:16:58 +0000
committerAlan Hourihane <alanh@tungstengraphics.com>2001-04-07 16:16:58 +0000
commit30c75badd18253c75cc1980b5171ca0f54b1a268 (patch)
treebc1449c3becae86f49a317d2efe0aaff3046dbc5 /src/mesa/drivers
parentd3abe14a3a2e7d098986f0fb3c1435ba60cc8768 (diff)
Add quad and quad_strip
Diffstat (limited to 'src/mesa/drivers')
-rw-r--r--src/mesa/drivers/common/t_dd_dmatmp.h62
1 files changed, 56 insertions, 6 deletions
diff --git a/src/mesa/drivers/common/t_dd_dmatmp.h b/src/mesa/drivers/common/t_dd_dmatmp.h
index 954ea87e62..33c300db53 100644
--- a/src/mesa/drivers/common/t_dd_dmatmp.h
+++ b/src/mesa/drivers/common/t_dd_dmatmp.h
@@ -1,4 +1,4 @@
-/* $Id: t_dd_dmatmp.h,v 1.8 2001/04/06 16:26:41 alanh Exp $ */
+/* $Id: t_dd_dmatmp.h,v 1.9 2001/04/07 16:16:58 alanh Exp $ */
/*
* Mesa 3-D graphics library
@@ -417,10 +417,39 @@ static void TAG(render_quad_strip_verts)( GLcontext *ctx,
{
GLuint j, nr;
- if (HAVE_QUAD_STRIPS && 0) {
- /* TODO.
- */
- } else if (HAVE_TRI_STRIPS && ctx->_TriangleCaps & DD_FLATSHADE) {
+ if (HAVE_QUAD_STRIPS) {
+ LOCAL_VARS;
+ GLuint j, nr;
+ int dmasz = GET_SUBSEQUENT_VB_MAX_VERTS();
+ int currentsz;
+
+ INIT(GL_QUAD_STRIP);
+ NEW_PRIMITIVE();
+
+ currentsz = GET_CURRENT_VB_MAX_VERTS();
+
+ if (currentsz < 8) {
+ FIRE_VERTICES();
+ currentsz = dmasz;
+ }
+
+ if (flags & PRIM_PARITY) {
+ EMIT_VERTS( ctx, start, 1 );
+ currentsz--;
+ }
+
+ dmasz -= (dmasz & 2);
+ currentsz -= (currentsz & 2);
+
+ for (j = start ; j < count - 3; j += nr - 2 ) {
+ nr = MIN2( currentsz, count - j );
+ EMIT_VERTS( ctx, j, nr );
+ currentsz = dmasz;
+ }
+
+ FINISH;
+
+ } else if (HAVE_ELTS && HAVE_TRI_STRIPS && ctx->_TriangleCaps & DD_FLATSHADE) {
if (TAG(emit_elt_verts)( ctx, start, count )) {
LOCAL_VARS;
int dmasz = GET_SUBSEQUENT_VB_MAX_ELTS();
@@ -517,7 +546,28 @@ static void TAG(render_quads_verts)( GLcontext *ctx,
GLuint count,
GLuint flags )
{
- if (HAVE_QUADS && 0) {
+ if (HAVE_QUADS) {
+ LOCAL_VARS;
+ int dmasz = (GET_SUBSEQUENT_VB_MAX_VERTS()/4) * 4;
+ int currentsz = (GET_CURRENT_VB_MAX_VERTS()/4) * 4;
+ GLuint j, nr;
+
+ INIT(GL_QUADS);
+
+ /* Emit whole number of quads in total. dmasz is already a multiple
+ * of 4.
+ */
+ count -= (count-start)%4;
+
+ if (currentsz < 8)
+ currentsz = dmasz;
+
+ for (j = start; j < count; j += nr) {
+ nr = MIN2( currentsz, count - j );
+ EMIT_VERTS( ctx, j, nr );
+ currentsz = dmasz;
+ }
+ FINISH;
} else if (TAG(emit_elt_verts)( ctx, start, count )) {
/* Hardware doesn't have a quad primitive type -- try to
* simulate it using indexed vertices and the triangle