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Handle XYZRHW vertex mode correctly in slow path.

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Christian Costa 2004-05-17 19:49:01 +00:00 committed by Alexandre Julliard
parent 8d954393e1
commit 36819ae09f
1 changed files with 3 additions and 7 deletions
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10
dlls/d3d8/drawprim.c
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@ -1208,17 +1208,13 @@ void drawStridedSlow(LPDIRECT3DDEVICE8 iface, Direct3DVertexStridedData *sd,
/* Position -------------------------------- */
if (sd->u.s.position.lpData != NULL) {
if (1.0f == rhw || rhw < 0.0001f) {
if (1.0f == rhw || ((rhw < 0.0001f) && (rhw > -0.0001f))) {
VTRACE(("Vertex: glVertex:x,y,z=%f,%f,%f\n", x,y,z));
glVertex3f(x, y, z);
} else {
GLfloat w = 1.0 / rhw;
VTRACE(("Vertex: glVertex:x,y,z=%f,%f,%f / rhw=%f\n", x,y,z,rhw));
/* Disable RHW mode as 'w' coord handling for rhw mode should
not impact screen position whereas in GL it does. This may
result in very slightly distored textures in rhw mode, but
a very minimal different. In slow mode a possible 'fix' is
glVertex4f(x*rhw,y*rhw,z*rhw,rhw) but not sure this is right */
glVertex3f(x,y,z);
glVertex4f(x*w, y*w, z*w, w);
}
}