collada_scene: materials, lighting, textures

collada_scene.lua

@@ -12,7 +12,13 @@ local pixel_data = love.filesystem.newFileData("pixel.glsl")
 local vertex_data = love.filesystem.newFileData("vertex.glsl")
 local shader = love.graphics.newShader(pixel_data, vertex_data)
 
-function load_geometries(vertex_buffer, index_buffer, geometries)
+local images_textures = {}
+local node_instances = {}
+
+local collada_scene
+
+collada_scene = {
+   load_geometries = function(vertex_buffer, index_buffer, geometries)
       for _, geometry in ipairs(geometries) do
          local offset = geometry.mesh.vertex_buffer_offset / (4 * 3 * 3)
          local attribute_list = pnt_attribute_list(vertex_buffer, offset)
@@ -23,11 +29,22 @@ function load_geometries(vertex_buffer, index_buffer, geometries)
 
          geometries_meshes[geometry] = mesh
       end
+   end,
+
+   load_images = function(base_path, images)
+      local image_index = 0
+      for _, image in ipairs(images) do
+         assert(string.sub(image.uri, 1, 1) == ".")
+         path = base_path .. string.sub(image.uri, 2)
+         print("load image", path)
+         local image_data = love.image.newImageData(path)
+         local texture = love.graphics.newTexture(image_data)
+         images_textures[image_index] = texture
+         image_index = image_index + 1
       end
+   end,
 
-local node_instances = {}
+   node_world_transform = function(node)
-
-function node_world_transform(node)
       local world
       if node.parent_index >= 0 then
          world = node_instances[node.parent_index].world
@@ -57,61 +74,68 @@ function node_world_transform(node)
          world = m * world
       end
       return world
-end
+   end,
 
-function load_node_world_transforms(nodes)
+   load_node_world_transforms = function(nodes)
       local node_index = 0
       for _, node in ipairs(nodes) do
-      world = node_world_transform(node)
+         world = collada_scene.node_world_transform(node)
          node_instances[node_index] = { world = world }
          node_index = node_index + 1
       end
-end
+   end,
 
-function set_color_or_texture(color_or_texture, color_uniform, sampler_uniform)
+   set_color_or_texture = function(color_or_texture, color_uniform, sampler_uniform)
       if color_or_texture.type == collada_types.color_or_texture_type.COLOR then
          shader:send(color_uniform, color_or_texture.color)
       elseif color_or_texture.type == collada_types.color_or_texture_type.TEXTURE then
-      assert(false)
+         shader:send(sampler_uniform, images_textures[color_or_texture.texture.image_index])
-      --shader:send(sampler_uniform, )
       else
          assert(false)
       end
-end
+   end,
 
-function set_instance_material(instance_material)
+   set_instance_material = function(instance_material)
-   effect = instance_material.material.effect
+      local effect = instance_material.material.effect
 
       if effect.type == collada_types.effect_type.BLINN then
-      set_color_or_texture(effect.blinn.emission, "emission_color", "emission_sampler");
+         collada_scene.set_color_or_texture(effect.blinn.emission, "emission_color", "emission_sampler");
-      set_color_or_texture(effect.blinn.ambient, "ambient_color", "ambient_sampler");
+         collada_scene.set_color_or_texture(effect.blinn.ambient, "ambient_color", "ambient_sampler");
-      set_color_or_texture(effect.blinn.diffuse, "diffuse_color", "diffuse_sampler");
+         collada_scene.set_color_or_texture(effect.blinn.diffuse, "diffuse_color", "diffuse_sampler");
-      set_color_or_texture(effect.blinn.specular, "specular_color", "specular_sampler");
+         collada_scene.set_color_or_texture(effect.blinn.specular, "specular_color", "specular_sampler");
          shader:send("shininess", effect.blinn.shininess);
       elseif effect.type == collada_types.effect_type.LAMBERT then
-      set_color_or_texture(effect.lambert.emission, "emission_color", "emission_sampler");
+         collada_scene.set_color_or_texture(effect.lambert.emission, "emission_color", "emission_sampler");
-      set_color_or_texture(effect.lambert.ambient, "ambient_color", "ambient_sampler");
+         collada_scene.set_color_or_texture(effect.lambert.ambient, "ambient_color", "ambient_sampler");
-      set_color_or_texture(effect.lambert.diffuse, "diffuse_color", "diffuse_sampler");
+         collada_scene.set_color_or_texture(effect.lambert.diffuse, "diffuse_color", "diffuse_sampler");
       elseif effect.type == collada_types.effect_type.PHONG then
-      set_color_or_texture(effect.phong.emission, "emission_color", "emission_sampler");
+         collada_scene.set_color_or_texture(effect.phong.emission, "emission_color", "emission_sampler");
-      set_color_or_texture(effect.phong.ambient, "ambient_color", "ambient_sampler");
+         collada_scene.set_color_or_texture(effect.phong.ambient, "ambient_color", "ambient_sampler");
-      set_color_or_texture(effect.phong.diffuse, "diffuse_color", "diffuse_sampler");
+         collada_scene.set_color_or_texture(effect.phong.diffuse, "diffuse_color", "diffuse_sampler");
-      set_color_or_texture(effect.phong.specular, "specular_color", "specular_sampler");
+         collada_scene.set_color_or_texture(effect.phong.specular, "specular_color", "specular_sampler");
          shader:send("shininess", effect.phong.shininess);
       elseif effect.type == collada_types.effect_type.CONSTANT then
          shader:send("emission_color", effect.constant.color)
       else
          assert(false)
       end
-end
 
-function draw_geometry(geometry, instance_materials)
+      local texture_channel = {
+         instance_material.emission.input_set,
+         instance_material.ambient.input_set,
+         instance_material.diffuse.input_set,
+         instance_material.specular.input_set,
+      }
+      shader:send("texture_channel", texture_channel)
+   end,
+
+   draw_geometry = function(geometry, instance_materials)
       local base_index_buffer_offset = geometry.mesh.index_buffer_offset / 4
 
       local mesh = geometries_meshes[geometry]
 
       for _, instance_material in ipairs(instance_materials) do
-      set_instance_material(instance_material)
+         collada_scene.set_instance_material(instance_material)
          local triangles = geometry.mesh.triangles[instance_material.element_index + 1]
 
          local index_offset = base_index_buffer_offset + triangles.index_offset
@@ -119,9 +143,9 @@ function draw_geometry(geometry, instance_materials)
          mesh:setDrawRange(1 + index_offset, index_count)
          love.graphics.draw(mesh, 0, 0, 0, 0, 0)
       end
-end
+   end,
 
-function draw_node(node_index, node, transform)
+   draw_node = function(node_index, node, transform)
       if node.type ~= collada_types.node_type.NODE then
          return
       end
@@ -136,22 +160,26 @@ function draw_node(node_index, node, transform)
       shader:send("transform", "column", transform.data)
 
       for _, instance_geometry in ipairs(node.instance_geometries) do
-      draw_geometry(instance_geometry.geometry, instance_geometry.instance_materials)
+         collada_scene.draw_geometry(instance_geometry.geometry, instance_geometry.instance_materials)
-   end
       end
+   end,
 
-function draw_nodes(nodes, transform)
+   draw_nodes = function(nodes, transform)
       love.graphics.setShader(shader)
       shader:send("view_position", {-88.57101, -71.71298, 104.5738, 1.0})
       shader:send("light_position", {0.0, -56.804, 58.237, 1.0})
 
       local node_index = 0
       for _, node in ipairs(nodes) do
-      draw_node(node_index, node, transform)
+         collada_scene.draw_node(node_index, node, transform)
          node_index = node_index + 1
       end
-end
+   end,
+}
 
 return {
-   draw_nodes = draw_nodes
+   draw_nodes = collada_scene.draw_nodes,
+   load_geometries = collada_scene.load_geometries,
+   load_node_world_transforms = collada_scene.load_node_world_transforms,
+   load_images = collada_scene.load_images,
 }

main.lua

@@ -54,11 +54,9 @@ function love.load(args)
    local vertex_buffer = love.graphics.newBuffer(vertexformat, vertex_data, { vertex = true, usage = "static" })
    local index_buffer = love.graphics.newBuffer("uint32", index_data, { index = true, usage = "static" })
 
-   load_geometries(vertex_buffer, index_buffer, scene_test.descriptor.geometries)
+   collada_scene.load_geometries(vertex_buffer, index_buffer, scene_test.descriptor.geometries)
-   load_node_world_transforms(scene_test.descriptor.nodes)
+   collada_scene.load_node_world_transforms(scene_test.descriptor.nodes)
-
+   collada_scene.load_images("scene/test", scene_test.descriptor.images)
-   local image_data = love.image.newCompressedData('bird.dds')
-   texture = love.graphics.newTexture(image_data)
 end
 
 local rotation = 0.0
@@ -90,5 +88,5 @@ function love.draw()
    local transform = view * projection
 
    love.graphics.setDepthMode("less", true)
-   draw_nodes(scene_test.descriptor.nodes, transform)
+   collada_scene.draw_nodes(scene_test.descriptor.nodes, transform)
 end

pixel.glsl

@@ -10,35 +10,56 @@ uniform vec4 diffuse_color;
 uniform vec4 specular_color;
 uniform float shininess;
 
+uniform sampler2D emission_sampler;
+uniform sampler2D ambient_sampler;
+uniform sampler2D diffuse_sampler;
+uniform sampler2D specular_sampler;
+
 uniform vec4 view_position;
 uniform vec4 light_position;
-//uniform int4 texture_channel;
+uniform ivec4 texture_channel;
-
-uniform sampler2D texture_sampler;
 
 out vec4 out_color;
 
 void pixelmain()
 {
-  //vec4 texColor = texture(texture_sampler, PixelTexture.xy);
-
   vec3 normal = normalize(PixelNormal.xyz);
   vec3 view_direction = normalize(view_position.xyz - PixelWorldPosition.xyz);
   vec3 light_direction = normalize(light_position.xyz - PixelWorldPosition.xyz);
   vec3 reflect_light_direction = reflect(-light_direction, normal);
 
-  vec3 emission = emission_color.xyz;
+  vec4 emission;
-  vec3 ambient = ambient_color.xyz;
+  vec4 ambient;
-  vec3 diffuse = diffuse_color.xyz;
+  vec4 diffuse;
-  vec3 specular = specular_color.xyz;
+  vec4 specular;
+  if (texture_channel.x >= 0) { // emission
+    emission = texture(emission_sampler, PixelTexture.xy);
+  } else {
+    emission = emission_color;
+  }
+  if (texture_channel.y >= 0) { // ambient
+    ambient = texture(ambient_sampler, PixelTexture.xy);
+  } else {
+    ambient = ambient_color;
+  }
+  if (texture_channel.z >= 0) { // diffuse
+    diffuse = texture(diffuse_sampler, PixelTexture.xy);
+  } else {
+    diffuse = diffuse_color;
+  }
+  if (texture_channel.w >= 0) { // specular
+    specular = texture(specular_sampler, PixelTexture.xy);
+  } else {
+    specular = specular_color;
+  }
 
   float diffuse_intensity = max(dot(normal, light_direction), 0.0);
   float specular_intensity = pow(max(dot(view_direction, reflect_light_direction), 0.0), shininess);
 
-  vec3 color = emission * 0;
+  vec3 color = emission.xyz * 0;
-  color += ambient * 0;
+  color += ambient.xyz * 0;
-  color += diffuse * diffuse_intensity;
+  color += diffuse.xyz * diffuse_intensity;
-  color += specular * specular_intensity * 0.3;
+  color += specular.xyz * specular_intensity * 0.3;
 
   out_color = vec4(color, 1.0);
 }

scene/test/test.lua

@@ -11,28 +11,37 @@ local light_environmentambientlight = {
   type = collada_types.light_type.AMBIENT,
   color = {0.0, 0.0, 0.0},
 }
-local images = {
+local light_omni001_light = {
+  type = collada_types.light_type.POINT,
+  color = {1.0, 1.0, 1.0},
 }
-local effect_coloreffectr228g184b153 = {
+-- logOnly_png
-  type = collada_types.effect_type.PHONG,
+local image_logonly_png = {
-  phong = {
+  uri = "./images/0_logOnly.png",
+}
+local images = {
+  image_logonly_png,
+}
+local effect_material__47 = {
+  type = collada_types.effect_type.BLINN,
+  blinn = {
     emission = {
       type = collada_types.color_or_texture_type.COLOR,
-      color = {0.0, 0.0, 0.0, 0.0},
+      color = {0.0, 0.0, 0.0, 1.0},
     },
     ambient = {
       type = collada_types.color_or_texture_type.COLOR,
-      color = {0.8941176, 0.7215686, 0.6, 1.0},
+      color = {0.588, 0.588, 0.588, 1.0},
     },
     diffuse = {
-      type = collada_types.color_or_texture_type.COLOR,
+      type = collada_types.color_or_texture_type.TEXTURE,
-      color = {0.8941176, 0.7215686, 0.6, 1.0},
+      texture = { image_index = 0 }, -- logOnly_png
     },
     specular = {
       type = collada_types.color_or_texture_type.COLOR,
-      color = {1.0, 1.0, 1.0, 1.0},
+      color = {0.36, 0.36, 0.36, 1.0},
     },
-    shininess = 10.0,
+    shininess = 37.0,
     reflective = {
       type = collada_types.color_or_texture_type.COLOR,
       color = {0.0, 0.0, 0.0, 1.0},
@@ -79,26 +88,26 @@ local effect_coloreffectr153g228b184 = {
     index_of_refraction = 0.0,
   }
 }
-local effect_coloreffectr177g26b88 = {
+local effect_material__46 = {
-  type = collada_types.effect_type.PHONG,
+  type = collada_types.effect_type.BLINN,
-  phong = {
+  blinn = {
     emission = {
       type = collada_types.color_or_texture_type.COLOR,
-      color = {0.0, 0.0, 0.0, 0.0},
+      color = {0.0, 0.0, 0.0, 1.0},
     },
     ambient = {
       type = collada_types.color_or_texture_type.COLOR,
-      color = {0.6941176, 0.1019608, 0.345098, 1.0},
+      color = {0.6941177, 0.1921569, 0.4039216, 1.0},
     },
     diffuse = {
       type = collada_types.color_or_texture_type.COLOR,
-      color = {0.6941176, 0.1019608, 0.345098, 1.0},
+      color = {0.6941177, 0.1921569, 0.4039216, 1.0},
     },
     specular = {
       type = collada_types.color_or_texture_type.COLOR,
-      color = {1.0, 1.0, 1.0, 1.0},
+      color = {0.27, 0.27, 0.27, 1.0},
     },
-    shininess = 10.0,
+    shininess = 38.0,
     reflective = {
       type = collada_types.color_or_texture_type.COLOR,
       color = {0.0, 0.0, 0.0, 1.0},
@@ -145,18 +154,18 @@ local effect_coloreffectr5g54b179 = {
     index_of_refraction = 0.0,
   }
 }
-local material_coloreffectr228g184b153_material = {
-  effect = effect_coloreffectr228g184b153,
-}
 local material_coloreffectr153g228b184_material = {
   effect = effect_coloreffectr153g228b184,
 }
-local material_coloreffectr177g26b88_material = {
-  effect = effect_coloreffectr177g26b88,
-}
 local material_coloreffectr5g54b179_material = {
   effect = effect_coloreffectr5g54b179,
 }
+local material_material__47_material = {
+  effect = effect_material__47,
+}
+local material_material__46_material = {
+  effect = effect_material__46,
+}
 local input_elements_position_0_3_normal_0_3_texcoord_0_3 = {
   {
     semantic = "POSITION",
@@ -274,11 +283,11 @@ local transforms_node_plane = {
 local instance_geometry_instance_materials_node_plane_0 = {
   {
     element_index = 0, -- an index into mesh.triangles
-    material = material_coloreffectr228g184b153_material,
+    material = material_material__47_material,
 
     emission = { input_set = -1 },
     ambient = { input_set = -1 },
-    diffuse = { input_set = -1 },
+    diffuse = { input_set = 0 },
     specular = { input_set = -1 },
   },
 }
@@ -400,7 +409,7 @@ local transforms_node_torusknot25 = {
 local instance_geometry_instance_materials_node_torusknot25_0 = {
   {
     element_index = 0, -- an index into mesh.triangles
-    material = material_coloreffectr177g26b88_material,
+    material = material_material__46_material,
 
     emission = { input_set = -1 },
     ambient = { input_set = -1 },
@@ -574,6 +583,47 @@ local node_node_camera_target = {
   channels = node_channels_node_camera_target,
   channels_count = 0,
 }
+local transforms_node_omni001 = {
+  {
+    type = collada_types.transform_type.TRANSLATE,
+    translate = {-2.48297e-06, -56.80384, 58.23672},
+  },
+  {
+    type = collada_types.transform_type.ROTATE,
+    rotate = {-0.5773502, 0.5773503, 0.5773503, -120.0},
+  },
+}
+local instance_geometries_node_omni001 = {
+}
+local instance_controllers_node_omni001 = {
+}
+local instance_lights_node_omni001 = {
+  {
+    light = light_omni001_light,
+  }
+}
+local node_channels_node_omni001 = {
+}
+local node_node_omni001 = {
+  parent_index = -1,
+
+  type = collada_types.node_type.NODE,
+
+  transforms = transforms_node_omni001,
+  transforms_count = 2,
+
+  instance_geometries = instance_geometries_node_omni001,
+  instance_geometries_count = 0,
+
+  instance_controllers = instance_controllers_node_omni001,
+  instance_controllers_count = 0,
+
+  instance_lights = instance_lights_node_omni001,
+  instance_lights_count = 1,
+
+  channels = node_channels_node_omni001,
+  channels_count = 0,
+}
 local nodes = {
   node_node_environmentambientlight, -- 0
   node_node_plane, -- 1
@@ -583,6 +633,7 @@ local nodes = {
   node_node_camera, -- 5
   node_node_cameratargethelper, -- 6
   node_node_camera_target, -- 7
+  node_node_omni001, -- 8
 }
 local inputs_list = {
   {

scene/test/test.mk

@@ -0,0 +1,6 @@
+IMAGES += image/0_logOnly.DDS
+image/0_logOnly.DDS: ./images/0_logOnly.png
+	@mkdir -p image
+	texconv10.exe -f BC1_UNORM -nologo "$<"
+	mv "$(<:.png=.DDS)" "$@"
+

scene/test/test.rc

@@ -2,3 +2,4 @@ RES_SCENES_TEST_VTX RCDATA "test.vtx"
 RES_SCENES_TEST_VJW RCDATA "test.vjw"
 RES_SCENES_TEST_IDX RCDATA "test.idx"
 
+_0_LOGONLY_PNG RCDATA "image/0_logOnly.DDS"