From 74c6854fd8dcbaee736ac0421805ff1e03c4a1e2 Mon Sep 17 00:00:00 2001
From: iamn1ck <iamn1ck@yahoo.com>
Date: Sun, 19 Feb 2017 07:00:34 -0600
Subject: -quadtree and opengl rendering are now in the master branch ! -using
 sdl_rect for location and size ended up being not so great due to it not
 having floats, so we reverted back to using location -much, much refractoring
 is now needed

---
 inc/opengl/basicshader.frag |  9 +++++++++
 inc/opengl/basicshader.geom | 33 +++++++++++++++++++++++++++++++++
 inc/opengl/basicshader.vert | 15 +++++++++++++++
 inc/opengl/theshader.frag   |  7 +++++++
 inc/opengl/theshader.geom   | 24 ++++++++++++++++++++++++
 inc/opengl/theshader.vert   | 15 +++++++++++++++
 6 files changed, 103 insertions(+)
 create mode 100644 inc/opengl/basicshader.frag
 create mode 100644 inc/opengl/basicshader.geom
 create mode 100644 inc/opengl/basicshader.vert
 create mode 100644 inc/opengl/theshader.frag
 create mode 100644 inc/opengl/theshader.geom
 create mode 100644 inc/opengl/theshader.vert

(limited to 'inc/opengl')

diff --git a/inc/opengl/basicshader.frag b/inc/opengl/basicshader.frag
new file mode 100644
index 0000000..9aa9d0b
--- /dev/null
+++ b/inc/opengl/basicshader.frag
@@ -0,0 +1,9 @@
+#version 320 es
+in highp vec3 fColor;
+out highp vec4 outColor;
+
+
+void main()
+{
+  outColor = vec4(fColor, 1.0);
+}
\ No newline at end of file
diff --git a/inc/opengl/basicshader.geom b/inc/opengl/basicshader.geom
new file mode 100644
index 0000000..3540d10
--- /dev/null
+++ b/inc/opengl/basicshader.geom
@@ -0,0 +1,33 @@
+#version 320 es
+layout(points) in;
+layout(line_strip, max_vertices = 64) out;
+
+in highp vec3 vColor[];
+in highp float vSides[];
+out highp vec3 fColor;
+
+const float PI = 3.1415926;
+
+void main()
+{
+  fColor = vColor[0];
+
+  for (int i = 0; i <= 4; i++) {	        // Angle between each side in radians
+	
+	vec4 offset = vec4(vSides[0] *.8,-vSides[0] *1.1, 0.0, 0.0);
+	if(i==1)
+		offset = vec4(vSides[0] *.8,vSides[0] *1.1, 0.0, 0.0);
+	if(i==2)
+		offset = vec4(-vSides[0] *.8,vSides[0] *1.1, 0.0, 0.0);
+	if(i==3)
+		offset = vec4(-vSides[0] *.8,-vSides[0] *1.1, 0.0, 0.0);
+	if(i==4)
+		offset = vec4(vSides[0] *.8,-vSides[0] *1.1, 0.0, 0.0);
+	
+	
+    gl_Position = gl_in[0].gl_Position - offset;
+
+    EmitVertex();
+  }
+  EndPrimitive();
+}
diff --git a/inc/opengl/basicshader.vert b/inc/opengl/basicshader.vert
new file mode 100644
index 0000000..f17aef5
--- /dev/null
+++ b/inc/opengl/basicshader.vert
@@ -0,0 +1,15 @@
+#version 320 es
+in highp vec2 pos;
+in highp vec3 color;
+in highp float sides;
+uniform mat4 MVP;
+
+out highp vec3 fColor;
+out highp float vSides;
+
+void main()
+{
+    gl_Position = MVP * vec4(pos, 0.0, 1.0);
+    fColor = color;
+    vSides = sides;
+}
diff --git a/inc/opengl/theshader.frag b/inc/opengl/theshader.frag
new file mode 100644
index 0000000..4f870cb
--- /dev/null
+++ b/inc/opengl/theshader.frag
@@ -0,0 +1,7 @@
+#version 320 es
+in highp vec3 fColor;
+out highp vec4 outColor;
+void main()
+{
+  outColor = vec4(fColor, 1.0);
+}
\ No newline at end of file
diff --git a/inc/opengl/theshader.geom b/inc/opengl/theshader.geom
new file mode 100644
index 0000000..a49e6bc
--- /dev/null
+++ b/inc/opengl/theshader.geom
@@ -0,0 +1,24 @@
+#version 320 es
+layout(points) in;
+layout(triangle_strip, max_vertices = 64) out;
+
+in highp vec3 vColor[];
+in highp float vSides[];
+out highp vec3 fColor;
+
+const float PI = 3.1415926;
+
+void main()
+{
+  fColor = vColor[0];
+
+  for (float i = 0.0; i <= vSides[0]; i+=1.0) {	        // Angle between each side in radians
+    float ang = PI * 2.0 / vSides[0] * i;
+    // Offset from center of point (0.3 to accomodate for aspect ratio)
+    vec4 offset = vec4(cos(ang) * 0.3, -sin(ang) * 0.4, 0.0, 0.0);
+    gl_Position = gl_in[0].gl_Position - offset;
+
+    EmitVertex();
+  }
+  EndPrimitive();
+}
\ No newline at end of file
diff --git a/inc/opengl/theshader.vert b/inc/opengl/theshader.vert
new file mode 100644
index 0000000..b7cfe3b
--- /dev/null
+++ b/inc/opengl/theshader.vert
@@ -0,0 +1,15 @@
+#version 320 es
+in highp vec2 pos;
+in highp vec3 color;
+in highp float sides;
+uniform mat4 MVP;
+
+out highp vec3 fColor;
+out highp float vSides;
+
+void main()
+{
+    gl_Position = MVP * vec4(pos, 0.0, 1.0);
+    fColor = color;
+    vSides = sides;
+}
-- 
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