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authorBrian Paul <brianp@vmware.com>2009-06-18 22:45:57 -0600
committerBrian Paul <brianp@vmware.com>2009-06-18 22:45:57 -0600
commit601065f15389b52c084cdc46c339e15fd3b5eb25 (patch)
tree6b6c5a382a226f31717d1e7521314a2d2488f996 /src/mesa
parentc70a529d7c8dfbb7fbb194261c60aeeb75f5ee35 (diff)
mesa: fix first provoking vertex mode for unfilled tri strips
Diffstat (limited to 'src/mesa')
-rw-r--r--src/mesa/tnl/t_vb_rendertmp.h26
1 files changed, 16 insertions, 10 deletions
diff --git a/src/mesa/tnl/t_vb_rendertmp.h b/src/mesa/tnl/t_vb_rendertmp.h
index 29d2fa852c..75f6f55bdc 100644
--- a/src/mesa/tnl/t_vb_rendertmp.h
+++ b/src/mesa/tnl/t_vb_rendertmp.h
@@ -201,22 +201,28 @@ static void TAG(render_tri_strip)( GLcontext *ctx,
INIT(GL_TRIANGLE_STRIP);
if (NEED_EDGEFLAG_SETUP) {
for (j=start+2;j<count;j++,parity^=1) {
- GLuint ej2 = ELT(j-2+parity);
- GLuint ej1 = ELT(j-1-parity);
- GLuint ej = ELT(j);
- GLboolean ef2 = EDGEFLAG_GET( ej2 );
- GLboolean ef1 = EDGEFLAG_GET( ej1 );
- GLboolean ef = EDGEFLAG_GET( ej );
+ GLuint ej2, ej1, ej;
+ GLboolean ef2, ef1, ef;
+ if (ctx->Light.ProvokingVertex == GL_LAST_VERTEX_CONVENTION_EXT) {
+ ej2 = ELT(j-2+parity);
+ ej1 = ELT(j-1-parity);
+ ej = ELT(j);
+ }
+ else {
+ ej2 = ELT(j-1+parity);
+ ej1 = ELT(j-parity);
+ ej = ELT(j-2);
+ }
+ ef2 = EDGEFLAG_GET( ej2 );
+ ef1 = EDGEFLAG_GET( ej1 );
+ ef = EDGEFLAG_GET( ej );
if (TEST_PRIM_BEGIN(flags)) {
RESET_STIPPLE;
}
EDGEFLAG_SET( ej2, GL_TRUE );
EDGEFLAG_SET( ej1, GL_TRUE );
EDGEFLAG_SET( ej, GL_TRUE );
- if (ctx->Light.ProvokingVertex == GL_LAST_VERTEX_CONVENTION_EXT)
- RENDER_TRI( ej2, ej1, ej );
- else
- RENDER_TRI( ej, ej2, ej1 );
+ RENDER_TRI( ej2, ej1, ej );
EDGEFLAG_SET( ej2, ef2 );
EDGEFLAG_SET( ej1, ef1 );
EDGEFLAG_SET( ej, ef );