working on the demosystem, added libtreestore

[andemo] / src / scr / testb.c

diff --git a/src/scr/testb.c b/src/scr/testb.c
index b65de8a..548fa0b 100644 (file)
--- a/src/scr/testb.c
+++ b/src/scr/testb.c
@@ -1,6 +1,56 @@
-#include "demosys.h"
-#include "opengl.h"
+#include "demo.h"
+#include "noise.h"
+
+static int init(void);
+static void destroy(void);
+static void draw(void);
+
+static unsigned int sdr_foo;
 
 void regscr_testb(void)
 {
+       static struct demoscreen scr = { "testb", init, destroy, 0, 0, 0, 0, draw };
+       dsys_add_screen(&scr);
+}
+
+static int init(void)
+{
+       if(!(sdr_foo = get_sdrprog("sdr/foo.v.glsl", "sdr/foo-notex.p.glsl"))) {
+               return -1;
+       }
+       return 0;
+}
+
+static void destroy(void)
+{
+}
+
+#define NX     16
+#define NY     10
+
+static void draw(void)
+{
+       int i, j;
+       float x, y, xr, yr, sz;
+       float t = dsys_time / 700.0f;
+
+       glUseProgram(sdr_foo);
+       gl_begin(GL_QUADS);
+       for(i=0; i<NY; i++) {
+               y = (i + 0.5f) / (NY/2.0f) - 1.0f;
+               for(j=0; j<NX; j++) {
+                       x = (j + 0.5f) / (NX/2.0f) - 1.0f;
+                       sz = noise2(x * 5.0f, t) * noise2(y * 5.0f, t) * 2.5f;
+                       if(sz < 0.0f) sz = 0.0f;
+                       if(sz > 1.0f) sz = 1.0f;
+                       xr = sz / NX;
+                       yr = sz / NY;
+
+                       gl_vertex2f(x - xr, y - yr);
+                       gl_vertex2f(x + xr, y - yr);
+                       gl_vertex2f(x + xr, y + yr);
+                       gl_vertex2f(x - xr, y + yr);
+               }
+       }
+       gl_end();
 }