Changes between Version 5 and Version 6 of content/BumpMapping

Timestamp:

Dec 5, 2018, 10:27:14 AM (6 years ago)

Author:

wiesep

Comment:

—

content/BumpMapping

@@ -44 +44 @@
 == Important Notes ==
 During the implementation of the bump map functionality the problem of flickering flickering occurred.
+This could be fixed by inserting the following lines into ever pass.
+{{{#!cpp
+ depth_write on
+ depth_bias 1
+}}}
+* Ambient Pass: depth_bias 0
+* Lightning Pass: depth_bias 1 
+* Decal Pass: depth_bias 2
 
+[[Image(Flickering.png, 200px)]]  
 
 == Screenshot ==
-{{{#!imagebox
+{{{#!rbox align=center)
 [[Image(bumpMap.png, 800px, align=center)]]  
 L: Bump map only, M: Bump map with texture, R: Normal texture
 }}}
 
+== Source ==
+[[CollapsibleStart(Base Material)]]
+{{{#!cpp
+// Any number of lights, diffuse
+material BumpMap_Base
+{
+    technique
+    {
+        // Base ambient pass
+        pass ambient
+        {
+          // base colours, not needed for rendering, but as information
+          // to lighting pass categorisation routine
+          diffuse 0 0 0
+          depth_write on
+          depth_bias 0
 
+        }
+        // Now do the lighting pass
+        // NB we don't do decal texture here because this is repeated per light
+        pass perlight
+        {
+
+            // do this for each light
+            iteration once_per_light
+            scene_blend add
+            depth_write on
+            depth_bias 1
+
+            // base colours, not needed for rendering, but as information
+            // to lighting pass categorisation routine
+            ambient 0 0 0
+
+            // Vertex program reference
+            vertex_program_ref BumpMapping/BumpMapVP
+            {
+                param_named_auto lightPosition light_position_object_space 0
+                param_named_auto worldViewProj worldviewproj_matrix
+            }
+
+            // Fragment program
+            fragment_program_ref BumpMapping/BumpMapFP
+            {
+                param_named_auto lightDiffuse light_diffuse_colour 0
+            }
+
+            // texture shadow receiver program
+            shadow_receiver_vertex_program_ref BumpMapping/BumpMapVPShadowRcv
+            {
+                param_named_auto lightPosition light_position_object_space 0
+                param_named_auto worldViewProj worldviewproj_matrix
+                param_named_auto worldMatrix world_matrix
+                param_named_auto texViewProj texture_viewproj_matrix
+            }
+            // Additive texture shadow receiver program
+            shadow_receiver_fragment_program_ref BumpMapping/BumpMapFPShadowRcv
+            {
+                param_named_auto lightDiffuse light_diffuse_colour 0
+            }
+
+            // Vertex program reference
+            vertex_program_ref BumpMapping/BumpMapVPSpecular
+            {
+                param_named_auto lightPosition light_position_object_space 0
+                param_named_auto eyePosition camera_position_object_space
+                param_named_auto worldViewProj worldviewproj_matrix
+            }
+
+            // Fragment program
+            fragment_program_ref BumpMapping/BumpMapFPSpecular
+            {
+                param_named_auto lightDiffuse light_diffuse_colour 0
+                param_named_auto lightSpecular light_specular_colour 0
+            }
+
+
+            // Base bump map
+            texture_unit normalmap
+            {
+                texture Cube_Lava_NORM.jpg
+                colour_op replace
+            }
+        }
+
+        // Decal pass
+        pass decal
+        {
+            // base colours, not needed for rendering, but as information
+            // to lighting pass categorisation routine
+            lighting off
+            depth_write on
+            depth_bias 2
+
+            scene_blend dest_colour zero
+            texture_unit decalmap
+            {
+                texture Cube_Lava_COLOR.jpg
+            }
+        }
+    }
+}
+}}}
+[[CollapsibleEnd]]