picking and brute force ray intersections

[retroray] / src / gaw / gawswtnl.c

diff --git a/src/gaw/gawswtnl.c b/src/gaw/gawswtnl.c
index 4930e09..a30d56c 100644 (file)
--- a/src/gaw/gawswtnl.c
+++ b/src/gaw/gawswtnl.c
@@ -100,6 +100,11 @@ void gaw_viewport(int x, int y, int w, int h)
        st.vport[3] = h;
 }
 
+void gaw_get_viewport(int *vp)
+{
+       memcpy(vp, st.vport, sizeof st.vport);
+}
+
 void gaw_matrix_mode(int mode)
 {
        st.mmode = mode;
@@ -318,7 +323,7 @@ void gaw_alpha_func(int func, float ref)
 
 void gaw_zoffset(float offs)
 {
-       st.zoffs = offs;
+       st.zoffs = offs * 0.1;
 }
 
 #define CLAMP(x, a, b)         ((x) < (a) ? (a) : ((x) > (b) ? (b) : (x)))
@@ -540,7 +545,9 @@ void gaw_draw_indexed(int prim, const unsigned int *idxarr, int nidx)
                        float oow = 1.0f / v[i].w;
                        v[i].x *= oow;
                        v[i].y *= oow;
-                       v[i].z += st.zoffs;
+                       if(st.opt & (1 << GAW_POLYGON_OFFSET)) {
+                               v[i].z += st.zoffs;
+                       }
                        if(st.opt & (1 << GAW_DEPTH_TEST)) {
                                v[i].z *= oow;
                        }