Скриптовые материалы

1. Create the post_sobel.basemat text file in the data/materials folder and open it in a plain text editor.Создайте текстовый файл post_sobel.basemat в папке data/materials и откройте его в текстовом редакторе.
2. Specify the name for the base material and attributes for it.
   Source Code (ULON)

   BaseMaterial post_sobel <preview_hidden=1 var_prefix=var texture_prefix=tex>
   {
   ...
   }

   Укажите название базового материала и атрибуты для него.
   Исходный код

   BaseMaterial post_sobel <options_hidden=1 preview_hidden=1 var_prefix=var texture_prefix=tex>
   		{
   		...
   		}

3. Describe material's resources and parameters.
   Source Code (ULON)

   // specify an internal texture to be used
   Texture src_color <source=procedural internal=true>
   
   // define the material's states and parameters available in the Editor
   Group "Sobel operator"
   {
   	State multiply = false
   	Slider threshold = 1.0 <min=0.0 max=1.0>
   	Slider scale = 1.0 <min=0.0 max=1.0>
   }

   Опишите ресурсы и параметры материала.
   Исходный код

   // specify an internal texture to be used
   Texture src_color <type=procedural internal=true>
   
   // define the material's states and parameters available in the Editor
   Group "Sobel operator"
   {
   	State multiply = false
   	Slider threshold = 1.0 <min=0.0 max=1.0>
   	Slider scale = 1.0 <min=0.0 max=1.0>
   }

4. Write the fragment shader for the custom outline render pass.
   Source code (UUSL)

   // define the outline render pass
   Pass render_sobel_operator
   {
   	// write the fragment shader in UUSL or HLSL/GLSL
   	Fragment=
   	#{
   		#include <core/materials/shaders/render/common.h>
   		
   			STRUCT_FRAG_BEGIN
   				INIT_COLOR(float4)
   			STRUCT_FRAG_END
   			
   			MAIN_FRAG_BEGIN(FRAGMENT_IN)
   			// get the inverse resolution of the viewport (1.0 / width, 1.0 / height)
   			float2 offset = s_viewport.zw; 
   			
   			// take 3x3 samples
   			OUT_COLOR = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV);
   			
   			float3 c0 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2( 1, 0)).rgb;
   			float3 c1 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2( 0, 1)).rgb;
   			float3 c2 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2( 1, 1)).rgb;
   			float3 c3 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2( 1, -1)).rgb;
   			
   			float3 c4 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2(-1, 0)).rgb;
   			float3 c5 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2( 0, -1)).rgb;
   			float3 c6 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2(-1, -1)).rgb;
   			float3 c7 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2(-1, 1)).rgb;
   			
   			// find edge with Sobel filter
   			float3 sobel_x = c6 + c4 * 2.0f + c7 - c3 - c0 * 2.0f - c2;
   			float3 sobel_y = c6 + c5 * 2.0f + c3 - c7 - c1 * 2.0f - c2;
   			float3 sobel = sqrt(sobel_x * sobel_x + sobel_y * sobel_y);
   			
   			// apply threshold
   			float edge = saturate(1.0f - dot(sobel, toFloat3(var_threshold)));
   			
   			// apply scale
   			float3 result = saturate(OUT_COLOR.rgb + var_scale) * edge;
   			
   			#ifdef STATE_MULTIPLY
   				OUT_COLOR.rgb *= result; // for colored result
   			#else
   				OUT_COLOR.rgb = result; // for black & white result
   			#endif
   		MAIN_FRAG_END
   	#}
   }

   Напишите фрагментный шейдер для пользовательского прохода рендеринга.
   Исходный код

   // define the outline render pass
   		Pass render_sobel_operator
   		{
   			// write the fragment shader in UUSL or HLSL/GLSL
   			Fragment=
   			#{
   				#include <core/shaders/common/fragment.h>
   				
   				MAIN_BEGIN(FRAGMENT_OUT, FRAGMENT_IN)
   					// get the inverse resolution of the viewport (1.0 / width, 1.0 / height)
   					float2 offset = s_viewport.zw; 
   					
   					// take 3x3 samples
   					OUT_COLOR = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV);
   					
   					float3 c0 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2( 1, 0)).rgb;
   					float3 c1 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2( 0, 1)).rgb;
   					float3 c2 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2( 1, 1)).rgb;
   					float3 c3 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2( 1, -1)).rgb;
   					
   					float3 c4 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2(-1, 0)).rgb;
   					float3 c5 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2( 0, -1)).rgb;
   					float3 c6 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2(-1, -1)).rgb;
   					float3 c7 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2(-1, 1)).rgb;
   					
   					// find edge with Sobel filter
   					float3 sobel_x = c6 + c4 * 2.0f + c7 - c3 - c0 * 2.0f - c2;
   					float3 sobel_y = c6 + c5 * 2.0f + c3 - c7 - c1 * 2.0f - c2;
   					float3 sobel = sqrt(sobel_x * sobel_x + sobel_y * sobel_y);
   					
   					// apply threshold
   					float edge = saturate(1.0f - dot(sobel, to_float3(var_threshold)));
   					
   					// apply scale
   					float3 result = saturate(OUT_COLOR.rgb + var_scale) * edge;
   					
   					#ifdef STATE_MULTIPLY
   						OUT_COLOR.rgb *= result; // for colored result
   					#else
   						OUT_COLOR.rgb = result; // for black & white result
   					#endif
   				MAIN_END
   			#}
   		}

5. Write the Expression callback in Unigine Script to be called after the Post Materials stage (EndPostMaterials event) of the render sequence to perform outline render pass with Sobel filter.
   Исходный код (UnigineScript)

   // the expression in Unigine Script defines a callback 
   Expression RENDER_CALLBACK_END_POST_MATERIALS = 
   #{
   	// declare the source texture from the screen frame
   	Texture source = engine.render.getTemporaryTexture(engine.render_state.getScreenColorTexture());
   	// define the source texture from the screen frame
   	source.copy(engine.render_state.getScreenColorTexture());
   	//set the color source texture to use it in the shader
   	setTexture("src_color", source);
   	// render the outline result texture to output it to the screen 
   	renderPassToTexture("render_sobel_operator", engine.render_state.getScreenColorTexture());
   	// release the temporaty texture
   	engine.render.releaseTemporaryTexture(source);
   #}

   Напишите функцию обратного вызова (Expression) на Unigine Script, которая будет вызываться после прохода Post Materials (RENDER_CALLBACK_END_POST_MATERIALS) для выполнения прохода рендеринга контура с фильтром Собеля.
   Исходный код (UnigineScript)

   // the expression in Unigine Script defines a callback 
   		Expression RENDER_CALLBACK_END_POST_MATERIALS = 
   		#{
   		// declare the source texture from the screen frame
   		Texture source = engine.render.getTemporaryTexture(engine.render_state.getScreenColorTexture());
   		// define the source texture from the screen frame
   		source.copy(engine.render_state.getScreenColorTexture());
   		//set the color source texture to use it in the shader
   		setTexture("src_color", source);
   		// render the outline result texture to output it to the screen 
   		renderPassToTexture("render_sobel_operator", engine.render_state.getScreenColorTexture());
   		// release the temporaty texture
   		engine.render.releaseTemporaryTexture(source);
   		#}

6. The full source code for the material is given below. You can copy it to the post_sobel.basemat and save the file.
   Исходный код

   BaseMaterial post_sobel <preview_hidden=1 var_prefix=var texture_prefix=tex>
   {
   // specify an internal texture to be used
   Texture src_color <source=procedural internal=true>
   
   // define the material's states and parameters available in the Editor
   Group "Sobel operator"
   {
   	State multiply = false
   	Slider threshold = 1.0 <min=0.0 max=1.0>
   	Slider scale = 1.0 <min=0.0 max=1.0>
   }
   
   // define the outline render pass
   Pass render_sobel_operator
   {
   	// write the fragment shader in UUSL or HLSL/GLSL
   	Fragment=
   	#{
   		#include <core/materials/shaders/render/common.h>
   		
   			STRUCT_FRAG_BEGIN
   				INIT_COLOR(float4)
   			STRUCT_FRAG_END
   			
   			MAIN_FRAG_BEGIN(FRAGMENT_IN)
   			// get the inverse resolution of the viewport (1.0 / width, 1.0 / height)
   			float2 offset = s_viewport.zw; 
   			
   			// take 3x3 samples
   			OUT_COLOR = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV);
   			
   			float3 c0 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2( 1, 0)).rgb;
   			float3 c1 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2( 0, 1)).rgb;
   			float3 c2 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2( 1, 1)).rgb;
   			float3 c3 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2( 1, -1)).rgb;
   			
   			float3 c4 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2(-1, 0)).rgb;
   			float3 c5 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2( 0, -1)).rgb;
   			float3 c6 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2(-1, -1)).rgb;
   			float3 c7 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2(-1, 1)).rgb;
   			
   			// find edge with Sobel filter
   			float3 sobel_x = c6 + c4 * 2.0f + c7 - c3 - c0 * 2.0f - c2;
   			float3 sobel_y = c6 + c5 * 2.0f + c3 - c7 - c1 * 2.0f - c2;
   			float3 sobel = sqrt(sobel_x * sobel_x + sobel_y * sobel_y);
   			
   			// apply threshold
   			float edge = saturate(1.0f - dot(sobel, toFloat3(var_threshold)));
   			
   			// apply scale
   			float3 result = saturate(OUT_COLOR.rgb + var_scale) * edge;
   			
   			#ifdef STATE_MULTIPLY
   				OUT_COLOR.rgb *= result; // for colored result
   			#else
   				OUT_COLOR.rgb = result; // for black & white result
   			#endif
   		MAIN_FRAG_END
   	#}
   }
   
   // the expression in Unigine Script defines a callback 
   Expression RENDER_CALLBACK_END_POST_MATERIALS = 
   #{
   	// declare the source texture from the screen frame
   	Texture source = engine.render.getTemporaryTexture(engine.render_state.getScreenColorTexture());
   	// define the source texture from the screen frame
   	source.copy(engine.render_state.getScreenColorTexture());
   	//set the color source texture to use it in the shader
   	setTexture("src_color", source);
   	// render the outline result texture to output it to the screen 
   	renderPassToTexture("render_sobel_operator", engine.render_state.getScreenColorTexture());
   	// release the temporaty texture
   	engine.render.releaseTemporaryTexture(source);
   #}
   }

   Полный исходный код материала приведен ниже. Вы можете скопировать его в post_sobel.basemat и сохранить файл.
   Исходный код

   BaseMaterial post_sobel <options_hidden=1 preview_hidden=1 var_prefix=var texture_prefix=tex>
   		{
   		// specify an internal texture to be used
   		Texture src_color <type=procedural internal=true>
   
   		// define the material's states and parameters available in the Editor
   		Group "Sobel operator"
   		{
   			State multiply = false
   			Slider threshold = 1.0 <min=0.0 max=1.0>
   			Slider scale = 1.0 <min=0.0 max=1.0>
   		}
   
   		// define the outline render pass
   		Pass render_sobel_operator
   		{
   			// write the fragment shader in UUSL or HLSL/GLSL
   			Fragment=
   			#{
   				#include <core/shaders/common/fragment.h>
   				
   				MAIN_BEGIN(FRAGMENT_OUT, FRAGMENT_IN)
   					// get the inverse resolution of the viewport (1.0 / width, 1.0 / height)
   					float2 offset = s_viewport.zw; 
   					
   					// take 3x3 samples
   					OUT_COLOR = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV);
   					
   					float3 c0 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2( 1, 0)).rgb;
   					float3 c1 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2( 0, 1)).rgb;
   					float3 c2 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2( 1, 1)).rgb;
   					float3 c3 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2( 1, -1)).rgb;
   					
   					float3 c4 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2(-1, 0)).rgb;
   					float3 c5 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2( 0, -1)).rgb;
   					float3 c6 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2(-1, -1)).rgb;
   					float3 c7 = TEXTURE_BIAS_ZERO(tex_src_color, IN_UV + offset * float2(-1, 1)).rgb;
   					
   					// find edge with Sobel filter
   					float3 sobel_x = c6 + c4 * 2.0f + c7 - c3 - c0 * 2.0f - c2;
   					float3 sobel_y = c6 + c5 * 2.0f + c3 - c7 - c1 * 2.0f - c2;
   					float3 sobel = sqrt(sobel_x * sobel_x + sobel_y * sobel_y);
   					
   					// apply threshold
   					float edge = saturate(1.0f - dot(sobel, to_float3(var_threshold)));
   					
   					// apply scale
   					float3 result = saturate(OUT_COLOR.rgb + var_scale) * edge;
   					
   					#ifdef STATE_MULTIPLY
   						OUT_COLOR.rgb *= result; // for colored result
   					#else
   						OUT_COLOR.rgb = result; // for black & white result
   					#endif
   				MAIN_END
   			#}
   		}
   
   		// the expression in Unigine Script defines a callback 
   		Expression RENDER_CALLBACK_END_POST_MATERIALS = 
   		#{
   			// declare the source texture from the screen frame
   			Texture source = engine.render.getTemporaryTexture(engine.render_state.getScreenColorTexture());
   			// define the source texture from the screen frame
   			source.copy(engine.render_state.getScreenColorTexture());
   			//set the color source texture to use it in the shader
   			setTexture("src_color", source);
   			// render the outline result texture to output it to the screen 
   			renderPassToTexture("render_sobel_operator", engine.render_state.getScreenColorTexture());
   			// release the temporaty texture
   			engine.render.releaseTemporaryTexture(source);
   		#}
   		}

1. Launch the UNIGINE Editor via the SDK Browser. In the Materials tab, you will find the imported post_sobel material in the list of base materials.
   Запустите UnigineEditor через браузер SDK. На вкладке «Материалы» вы найдете импортированный материал post_sobel в списке базовых материалов.
   
2. To apply the material globally, go to Windows -> Settings and in the Custom Post Materials section click Add New Material. Assign the post_sobel material by dragging it to the field or by specifying the name of the material. Чтобы применить материал глобально, перейдите к Windows -> Settings и в разделе Scriptable Materials нажмите Add New Scriptable Material. Назначьте материал post_sobel, перетащив его в поле или указав имя материала.
3. Click create a child material to be able to specify states and parameters of the material. The new child material of the post_sobel will be created and assigned here.
   Щелкните Create a child material, чтобы указать состояния и параметры материала. Здесь будет создан и назначен новый дочерний материал post_sobel.
   
   
4. Check Multiply to make a colorful final image. Adjust the Threshold and Scale values to customize the effect.
   The applied post process outline effect.The applied post process outline effect.
   The applied post process outline effect.Отметьте Multiply, чтобы получить красочное окончательное изображение. Отрегулируйте значения Threshold и Scale, чтобы настроить эффект.
   
   The applied post process outline effect.Примененный эффект контура постобработки.

That's it! You have just created a scriptable material for all of the application’s cameras. To apply the post process effect only to a specific camera, go to the Parameters tab of the corresponding Player node and assign the material to it.

Вот и все! Вы только что создали скриптовый материал применяемый глобально ко всем камерам. Чтобы применить эффект постобработки только к определенной камере, перейдите на вкладку Parameters соответствующего Player и назначьте ему материал.