picking and brute force ray intersections

[retroray] / src / gaw / gaw_gl.c

diff --git a/src/gaw/gaw_gl.c b/src/gaw/gaw_gl.c
index 40f870c..1868d26 100644 (file)
--- a/src/gaw/gaw_gl.c
+++ b/src/gaw/gaw_gl.c
@@ -44,6 +44,11 @@ void gaw_viewport(int x, int y, int w, int h)
        glViewport(x, y, w, h);
 }
 
+void gaw_get_viewport(int *vp)
+{
+       glGetIntegerv(GL_VIEWPORT, vp);
+}
+
 void gaw_matrix_mode(int mode)
 {
        mode += GL_MODELVIEW;
@@ -167,6 +172,9 @@ void gaw_enable(int st)
        case GAW_TEXTURE_2D:
                glEnable(GL_TEXTURE_2D);
                break;
+       case GAW_POLYGON_OFFSET:
+               glEnable(GL_POLYGON_OFFSET_FILL);
+               break;
        default:
                break;
        }
@@ -214,6 +222,9 @@ void gaw_disable(int st)
        case GAW_TEXTURE_2D:
                glDisable(GL_TEXTURE_2D);
                break;
+       case GAW_POLYGON_OFFSET:
+               glDisable(GL_POLYGON_OFFSET_FILL);
+               break;
        default:
                break;
        }
@@ -235,6 +246,11 @@ void gaw_alpha_func(int func, float ref)
        glAlphaFunc(func + GL_NEVER, ref);
 }
 
+void gaw_zoffset(float offs)
+{
+       glPolygonOffset(1, offs);
+}
+
 void gaw_clear_color(float r, float g, float b, float a)
 {
        glClearColor(r, g, b, a);