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mesa: fix first provoking vertex mode for unfilled tri strips

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This commit is contained in:
Brian Paul 2009-06-18 22:45:57 -06:00
parent c70a529d7c
commit 601065f153
1 changed files with 16 additions and 10 deletions
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26
src/mesa/tnl/t_vb_rendertmp.h
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@ -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 );