git-svn-id: svn://db.shs.com.ru/libs@627 a8b55f48-bf90-11e4-a774-851b48703e85

qglengine/shaders/service_frame.glsl

@@ -0,0 +1,48 @@
+// vert //
+
+out vec4 object_color_g;
+out float mat_scale;
+
+void main(void) {
+	gl_Position = qgl_ftransform();
+	object_color_g = qgl_ObjectColor;
+	mat_scale = pow(qgl_ModelMatrix[0][0] * qgl_ModelMatrix[1][1] * qgl_ModelMatrix[2][2], 0.3333);
+}
+
+
+// geom //
+
+layout (lines) in;
+layout (triangle_strip, max_vertices = 4) out;
+
+in float mat_scale[];
+in vec4 object_color_g[];
+out vec4 object_color;
+
+uniform float line_width, z_offset;
+uniform mat4 qgl_ProjMatrix;
+
+void main(void) {
+	object_color = object_color_g[0];
+	vec2 dir = normalize(gl_in[0].gl_Position.xy - gl_in[1].gl_Position.xy);
+	vec2 side = cross(vec3(dir, 0), vec3(0, 0, 1)).xy;
+	vec4 vo = vec4(0, 0, z_offset, 0);
+	float dts = 0.05 * line_width * mat_scale[0];
+	dir  *= dts;
+	side *= dts;
+	gl_Position = gl_in[0].gl_Position + vec4((dir + side), 0, 0)*qgl_ProjMatrix + vo; EmitVertex();
+	gl_Position = gl_in[0].gl_Position + vec4((dir - side), 0, 0)*qgl_ProjMatrix + vo; EmitVertex();
+	gl_Position = gl_in[1].gl_Position - vec4((dir - side), 0, 0)*qgl_ProjMatrix + vo; EmitVertex();
+	gl_Position = gl_in[1].gl_Position - vec4((dir + side), 0, 0)*qgl_ProjMatrix + vo; EmitVertex();
+    EndPrimitive();
+}
+
+
+// frag //
+
+in vec4 object_color;
+uniform float scale;
+
+void main(void) {
+	qgl_FragColor = object_color;
+}