1 files changed, 128 insertions, 2 deletions

diff --git a/drivers/gles2/shaders/canvas.glsl b/drivers/gles2/shaders/canvas.glsl
index f36741d586..3e7e54e0fe 100644
--- a/drivers/gles2/shaders/canvas.glsl
+++ b/drivers/gles2/shaders/canvas.glsl
@@ -18,19 +18,56 @@ attribute highp vec2 uv_attrib; // attrib:4
 varying vec2 uv_interp;
 varying vec4 color_interp;
 
+#if defined(USE_TIME)
+uniform float time;
+#endif
+
+
+#ifdef USE_LIGHTING
+
+uniform highp mat4 light_matrix;
+varying vec4 light_tex_pos;
+
+#endif
+
+#if defined(ENABLE_VAR1_INTERP)
+varying vec4 var1_interp;
+#endif
+
+#if defined(ENABLE_VAR2_INTERP)
+varying vec4 var2_interp;
+#endif
+
 //uniform bool snap_pixels;
 
+VERTEX_SHADER_GLOBALS
+
 void main() {
 
 	color_interp = color_attrib;
 	uv_interp = uv_attrib;		
 	highp vec4 outvec = vec4(vertex, 1.0);
+{
+	vec2 src_vtx=outvec.xy;
+VERTEX_SHADER_CODE
+
+}
 	outvec = extra_matrix * outvec;
 	outvec = modelview_matrix * outvec;
 #ifdef USE_PIXEL_SNAP
 
-		outvec.xy=floor(outvec.xy+0.5);
+	outvec.xy=floor(outvec.xy+0.5);
+#endif
+
+
+#ifdef USE_LIGHTING
+
+	light_tex_pos.xy = light_matrix * outvec;
+	light_tex_pos.zw=outvec.xy - light_matrix[4].xy; //likely wrong
+
 #endif
+
+
 	gl_Position = projection_matrix * outvec;
 }
 
@@ -54,17 +91,106 @@ varying vec4 color_interp;
 
 #endif
 
+#if defined(ENABLE_SCREEN_UV)
+
+uniform vec2 screen_uv_mult;
+
+#endif
+
+#if defined(ENABLE_TEXSCREEN)
+
+uniform vec2 texscreen_screen_mult;
+uniform sampler2D texscreen_tex;
+
+#endif
+
+
+#if defined(ENABLE_VAR1_INTERP)
+varying vec4 var1_interp;
+#endif
+
+#if defined(ENABLE_VAR2_INTERP)
+varying vec4 var2_interp;
+#endif
+
+#if defined(USE_TIME)
+uniform float time;
+#endif
+
+
+#ifdef USE_LIGHTING
+
+uniform sampler2D light_texture;
+varying vec4 light_tex_pos;
+
+#ifdef USE_SHADOWS
+
+uniform sampler2D shadow_texture;
+uniform float shadow_attenuation;
+
+#endif
+
+#endif
+
+FRAGMENT_SHADER_GLOBALS
+
+
 void main() {
 
 	vec4 color = color_interp;
-	
+#if defined(NORMAL_USED)
+	vec3 normal = vec3(0,0,1);
+#endif
+
 	color *= texture2D( texture,  uv_interp );
+#if defined(ENABLE_SCREEN_UV)
+	vec2 screen_uv = gl_FragCoord.xy*screen_uv_mult;
+#endif
 
+{
+FRAGMENT_SHADER_CODE
+}
 #ifdef DEBUG_ENCODED_32
 	highp float enc32 = dot( color,highp vec4(1.0 / (256.0 * 256.0 * 256.0),1.0 / (256.0 * 256.0),1.0 / 256.0,1)  );
 	color = vec4(vec3(enc32),1.0);
 #endif
 
+#ifdef USE_LIGHTING
+
+	float att=1.0;
+
+	vec3 light = texture2D(light_texture,light_tex_pos).rgb;
+#ifdef USE_SHADOWS
+	//this might not be that great on mobile?
+	float light_dist = length(light_texture.zw);
+	float light_angle = atan2(light_texture.x,light_texture.z) + 1.0 * 0.5;
+	float shadow_dist = texture2D(shadow_texture,vec2(light_angle,0));
+	if (light_dist>shadow_dist) {
+		light*=shadow_attenuation;
+	}
+//use shadows
+#endif
+
+#if defined(USE_LIGHT_SHADER_CODE)
+//light is written by the light shader
+{
+	vec2 light_dir = normalize(light_tex_pos.zw);
+	float light_distance = length(light_tex_pos.zw);
+LIGHT_SHADER_CODE
+}
+#else
+
+#if defined(NORMAL_USED)
+	vec2 light_normal = normalize(light_tex_pos.zw);
+	light = color.rgb * light * max(dot(light_normal,normal),0);
+#endif
+
+	color.rgb=light;
+//light shader code
+#endif
+
+//use lighting
+#endif
 //	color.rgb*=color.a;
 	gl_FragColor = color;